Sweetwater and Loveland Reservoirs Watershed Sanitary Survey First Update

SWEETWATER AND LOVELAND RESERVOIRS WATERSHED SANITARY SURVEY FIRST UPDATE

Final Report August 2007

ARCHIBALD CONSULTING

Sweetwater and Loveland Reservoirs Watershed Sanitary Survey First Update FINAL REPORT August 2007

Technical Committee:

Sweetwater Authority Pete Baranov Jane Davies Mark Hatcher George Silva Don Thomson

Prepared By:

Leslie Palencia, Palencia Consulting Engineers Bonny Starr, Starr Consulting

PREPARED BY

TABLE OF CONTENTS

Page Number Executive Summary Introduction ...... ES-1 Objectives of the Update...... ES-1 Key Findings and Conclusions ...... ES-1 Source Water Quality ...... ES-1 Turbidity ...... ES-2 Coliform...... ES-2 Giardia/Cryptosporidium ...... ES-2 Disinfection By-Product Precursors...... ES-2 Volatile and Synthetic Organic Compounds (VOCs and SOCs)...... ES-2 Nitrate ...... ES-3 Selected Metals...... ES-3 Selected Minerals...... ES-3 Plankton and Related Constituents...... ES-3 Arsenic/Hexavalent Chromium...... ES-4 Intake Evaluation ...... ES-4 Robert A. Perdue Water Treatment Plant ...... ES-4 Turbidity...... ES-4 Microbiological Constituent Review ...... ES-4 Disinfection By-Products...... ES-5 VOCs and SOCs...... ES-6 Inorganics ...... ES-6 Giardia/Virus/Cryptosporidium Reduction Requirements..... ES-7 Watershed Contaminant Sources...... ES-7 Spills ...... ES-7 Landfills...... ES-8 Recreation...... ES-9 Urban Runoff...... ES-10 Wastewater ...... ES-11 Proposed Highways and Other Developments ...... ES-11 Homeless Encampments ...... ES-12 Agriculture...... ES-12 Fires ...... ES-13 Topics to Consider for the 2012 Update...... ES-13 Recommendations ...... ES-13

Section 1 – Introduction

Introduction ...... 1-1 Objectives of the Update...... 1-1 Constituents and Potential Contaminating Activities Covered in the First Update...... 1-2 Description of How the First Update was Conducted ...... 1-4 Report Organization ...... 1-5

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Section 2 – Watershed and Water Supply Systems

Watershed Description ...... 2-1 Precipitation...... 2-1 Flow...... 2-2 Land Use ...... 2-3 Population ...... 2-3 Land Ownership ...... 2-4 Water Supply System...... 2-5 Background ...... 2-5 Sweetwater and Loveland Reservoirs ...... 2-6 Robert A. Perdue Water Treatment Plant...... 2-6

Section 3 – Source Water Quality Review

Overall Water Quality Summary ...... 3-2 Selected Constituent Review ...... 3-2 Turbidity...... 3-4 General Characteristics and Background ...... 3-4 Evaluation ...... 3-4 Summary of Results...... 3-5 Microbial Constituents ...... 3-6 General Characteristics and Background ...... 3-6 Evaluations ...... 3-7 Total Coliform ...... 3-7 E. coli...... 3-9 Giardia and Cryptosporidium ...... 3-11 Summary of Results...... 3-12 Disinfection By-Product Precursors ...... 3-12 General Characteristics and Background ...... 3-12 Evaluation ...... 3-13 Organic Carbon ...... 3-13 Bromide ...... 3-16 Summary of Results...... 3-16 Volatile and Synthetic Organic Chemicals...... 3-17 General Characteristics and Background ...... 3-17 Evaluation ...... 3-17 Summary of Results...... 3-19 Nitrate...... 3-19 General Characteristics and Background ...... 3-19 Evaluation ...... 3-20 Summary of Results...... 3-20 Selected Metals...... 3-21 General Characteristics and Background ...... 3-21 Evaluation ...... 3-21

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Summary of Results...... 3-23 Selected Minerals ...... 3-24 General Characteristics and Background ...... 3-24 Evaluation ...... 3-24 Summary of Results...... 3-27 Plankton and Related Constituents ...... 3-27 General Characteristics and Background ...... 3-27 Evaluation ...... 3-29 Summary of Results...... 3-35 Arsenic ...... 3-36 General Characteristics and Background ...... 3-36 Evaluation ...... 3-36 Hexavalent Chromium ...... 3-36 General Characteristics and Background ...... 3-36 Evaluation ...... 3-37

Section 4 – Watershed Contaminant Sources Review

Spills...... 4-1 Background ...... 4-1 Seasonal Patterns ...... 4-1 Related Constituents ...... 4-1 Occurrence in Watershed...... 4-2 Related Water Quality Issues and Data Review...... 4-5 Regulation and Management ...... 4-6 Source Water Protection Activities ...... 4-8 Summary of Findings for Spills...... 4-8 Landfills ...... 4-9 Background ...... 4-9 Seasonal Patterns ...... 4-9 Related Constituents ...... 4-9 Occurrence in Watershed...... 4-9 Viejas Landfill...... 4-9 Jamacha Landfill...... 4-10 Related Water Quality Issues and Data Review...... 4-10 Viejas Landfill...... 4-10 Jamacha Landfill...... 4-13 Surface Water Sampling...... 4-19 Passive Soil-Gas Survey ...... 4-19 Temporary Groundwater Sample Points ...... 4-20 Regulation and Management ...... 4-20 Source Water Protection Activities ...... 4-21 Summary of Findings for Landfills ...... 4-21 Viejas Landfill...... 4-21 Jamacha Landfill...... 4-21 Recreation...... 4-23

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Background ...... 4-23 Seasonal Patterns ...... 4-23 Related Constituents ...... 4-23 Occurrence in Watershed...... 4-23 Loveland Reservoir...... 4-23 Sweetwater Reservoir...... 4-24 Cuyamaca Rancho State Park...... 4-25 Cleveland National Forest...... 4-25 Palo Verde Lake ...... 4-25 Private Campgrounds ...... 4-25 Related Water Quality Issues and Data Review...... 4-26 Regulation and Management ...... 4-26 Source Water Protection Activities ...... 4-27 Summary of Findings for Recreation ...... 4-28 Urban Runoff...... 4-29 Background ...... 4-29 Seasonal Patterns ...... 4-29 Related Constituents ...... 4-29 Occurrence in Watershed...... 4-29 Municipal Sources ...... 4-30 Industrial Sources ...... 4-32 Commercial Sources...... 4-33 Construction Sources...... 4-33 Related Water Quality Issues and Data Review...... 4-33 Regulation and Management ...... 4-35 State Water Resources Control Board...... 4-35 Regional Water Quality Control Board...... 4-36 Sweetwater Authority...... 4-37 Source Water Protection Activities ...... 4-37 San Diego County, Department of Public Works ...... 4-37 Municipal Sources ...... 4-37 Industrial Sources ...... 4-37 Commercial Sources ...... 4-39 Construction Sources ...... 4-40 New Developments...... 4-40 Sweetwater Authority...... 4-41 Summary of Findings for Urban Runoff ...... 4-41 Wastewater ...... 4-43 Background ...... 4-43 Seasonal Patterns ...... 4-43 Related Constituents ...... 4-43 Occurrence in Watershed...... 4-43 Wastewater Pump Stations...... 4-43 Wastewater Treatment Plants & Non-Residential Septic Systems ...... 4-45 Residential Septic Systems ...... 4-48 Related Water Quality Issues and Data Review...... 4-48

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Regulation and Management ...... 4-49 Wastewater Pump Stations...... 4-49 Residential Septic Systems ...... 4-50 Wastewater Treatment Plants & Non-residential Septic Systems...... 4-50 Source Water Protection Activities ...... 4-50 Summary of Findings for Wastewater...... 4-50 Proposed Highways and Other Developments...... 4-51 Background ...... 4-51 Seasonal Patterns ...... 4-51 Related Constituents ...... 4-51 Occurrence in Watershed...... 4-51 Construction of Route 125 ...... 4-51 Residential ...... 4-52 Golf Courses...... 4-53 McGrath Family YMCA ...... 4-53 Related Water Quality Issues and Data Review...... 4-53 Route 125 ...... 4-53 Golf Courses...... 4-54 Regulation and Management ...... 4-57 County of San Diego...... 4-57 Golf Courses ...... 4-57 General Development ...... 4-57 Sweetwater Authority...... 4-58 Source Water Protection Activities ...... 4-58 Maggio Ranch...... 4-58 Oaks at Descanso Recreational Vehicle Park ...... 4-59 Willow Glen Ranch Subdivision ...... 4-59 Fuerte Ranch Estates ...... 4-59 Simpson Farms...... 4-60 Nobel Nursery...... 4-60 Katzer Veterinary Clinic ...... 4-61 Mt. Miguel Commerce Community...... 4-61 Expansion of Existing Texaco Station...... 4-61 Starco Food Mart and Fuel Sales ...... 4-62 Willow Glen Corners ...... 4-62 Summary of Findings for Proposed Highways and Other Developments ...... 4-63 Homeless Encampments ...... 4-64 Background ...... 4-64 Seasonal Patterns ...... 4-64 Occurrence in Watershed...... 4-64 Related Water Quality Issues and Data Review...... 4-64 Regulation and Management ...... 4-64 Source Water Protection Activities ...... 4-65 Summary of Findings for Homeless Encampments...... 4-65 Agriculture ...... 4-66 Background ...... 4-66

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Seasonal Patterns ...... 4-66 Related Constituents ...... 4-66 Occurrence in Watershed...... 4-66 Equestrian Facilities...... 4-66 Poultry Farms ...... 4-67 Crops and Nurseries...... 4-67 Related Water Quality Issues and Data Review...... 4-68 Regulation and Management ...... 4-69 Source Water Protection Activities ...... 4-70 Summary of Findings for Agriculture ...... 4-70 Fires ...... 4-72 Background ...... 4-72 Seasonal Patterns ...... 4-72 Related Constituents ...... 4-72 Occurrence in Watershed...... 4-72 Viejas Fire...... 4-72 Cedar Fire...... 4-73 Related Water Quality Issues and Data Review...... 4-73 Viejas Fire...... 4-73 Cedar Fire...... 4-73 Regulation and Management ...... 4-74 Source Water Protection Activities ...... 4-75 Viejas Fire...... 4-75 Cedar Fire...... 4-75 Summary of Findings for Fires...... 4-75

Section 5 – Intake Evaluation

Perdue Water Treatment Plant...... 5-2 System Description...... 5-2 Highlight of Changes Since 1995 Update...... 5-3 Significant Potential Contaminating Activities...... 5-3 Water Quality Summary ...... 5-4 Turbidity...... 5-4 Microbiological Constituent Review ...... 5-4 Disinfection By-Products...... 5-5 Volatile and Synthetic Organic Chemicals ...... 5-10 Inorganics ...... 5-10 Giardia/Virus/Cryptosporidium Reduction Requirements ...... 5-11 Regulatory Compliance Evaluation...... 5-11

Section 6 – Recommendations

Significant Changes Since the 1995 Watershed Sanitary Survey ...... 6-1 Recommendations ...... 6-2

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Appendix A - Bibliography and List of Contacts Appendix B - Summaries of Perdue WTP intake data Appendix C – Periods of Use for Water Sources Appendix D - Detected Organics from USGS 125 Study

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LIST OF TABLES

Page Number

Table 1-1 Water Quality Constituents Selected for Evaluation as Part of the First Update ...... 1-2

Table 2-1 Annual Rainfall Totals at Sweetwater & Loveland Reservoirs...... 2-2 Table 2-2 Land Use in the Upper and Middle Sweetwater Watersheds ...... 2-3 Table 2-3 Land Ownership in Upper and Middle Watersheds...... 2-4 Table 2-4 Breakdown of System Production for the Sweetwater Authority, 1996 to 2006 ...... 2-5

Table 3-1 Summary of Source Water Quality Data Evaluated ...... 3-1 Table 3-2 Relationship Between Potential Contaminating Activities in the Sweetwater and Loveland Reservoirs Watershed and Source Water Quality ...... 3-3 Table 3-3 Perdue WTP Raw Water Monthly Median Total Coliform (MPN/100mL)...... 3-8 Table 3-4 Perdue WTP Raw Water Monthly Median E. coli (MPN/100mL)...... 3-10 Table 3-5 Volume of Imported Water Stored in Sweetwater Reservoir ...... 3-14 Table 3-6 Summary of SOCs Detected in Sweetwater Authority Ambient Monitoring (µg/L)...... 3-17 Table 3-7 Summary of Pesticides Detected in USGS Ambient Monitoring (µg/L)...... 3-18 Table 3-8 Summary of Sweetwater Authority Iron and Manganese Monitoring (µg/L)...... 3-21 Table 3-9 Summary of Sweetwater Authority Selected Mineral Monitoring ...... 3-25 Table 3-10 Sweetwater Authority Monitoring for MIB and Geosmin in Sweetwater Reservoir ...... 3-31

Table 4-1 Summary of Sanitary Sewer Overflow Incidents,1996-2006 ...... 4-3 Table 4-2 Summary of Spills Occurring in Sweetwater Watershed as reported to OES, 1996-2005 ...... 4-4 Table 4-3 Description of Wells at Jamacha Landfill..………………………..4-14 Table 4-4 VOCs Detected in First Quarter 2006 Monitoring at Jamacha Landfill...... 4-15 Table 4-5 Surface Water Samples Collected from Sweetwater River – Phase II EMP for Jamacha Landfill ...... 4-19 Table 4-6 Facilities Covered Under General Industrial Activities Storm Water Permit...... 4-30 Table 4-7 High Priority Municipal Sites within Sweetwater Watershed ...... 4-31 Table 4-8 Medium Priority Municipal Sites within Sweetwater Watershed . 4-32 Table 4-9 Low Priority Municipal Sites within Sweetwater Watershed ...... 4-32

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Table 4-10 High Priority Industrial Sites within Sweetwater Watershed ...... (excluding sites covered by General Industrial Permit) ...... 4-32 Table 4-11 Dry Weather Monitoring Results at Site SWT12 (Sweetwater River at the Old Bridge)...... 4-34 Table 4-12 Dry Weather Monitoring Results at Site SWT 11 and 12 ...... 4-35 Table 4-13 Wastewater Pump Stations Located in the Upper and Middle Sweetwater Watershed ...... 4-44 Table 4-14 Waste Discharge Requirement Permits in the Upper and Middle Sweetwater Watershed...... 4-46 Table 4-15 Pesticides Used at Steele Canyon Golf Course, 2004-2006...... 4-55 Table 4-16 Pesticides Used at Cottonwood Golf Course, 2004-2006 ...... 4-56 Table 4-17 Pesticides Used at Sycuan Golf Course, 2004-2006 ...... 4-56 Table 4-18 Commercial Nurseries Located in Sweetwater Watershed ...... 4-68

Table 5-1 Locational Running Annual Average TTHMs for Perdue WTP (µg/L)...... 5-6 Table 5-2 Locational Running Annual Average HAAs for Perdue WTP (µg/L)...... 5-8 Table 5-3 Mineral Levels for Perdue WTP Effluent (µg/L)...... 5-11 Table 5-4 Regulatory Compliance Evaluation Sweetwater Authority – Perdue (WTP) ...... 5-12

Table 6-1 First Update Recommendations...... 6-3

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LIST OF FIGURES

Page Number

Figure 2-1 Location Map ...... following page 2-1 Figure 2-2 Monthly Rainfall Totals at Sweetwater Reservoir Dam, 1996-2006 ...... 2-2 Figure 2-3 Existing Land Use...... following page 2-3 Figure 2-4 Population in the Watershed ...... following page 2-3 Figure 2-5 Population by Community Planning Area ...... following page 2-3 Figure 2-6 Existing Land Ownership ...... following page 2-4 Figure 2-7 Water Service Area ...... following page 2-5

Figure 3-1 Source Water Quality Monitoring Locations ...... following page 3-2 Figure 3-2 Perdue WTP Raw Water Daily Maximum Turbidity and Precipitation...... 3-5 Figure 3-3 Perdue WTP Raw Water Total Coliform ...... 3-8 Figure 3-4 Perdue WTP Raw Water E. coli ...... 3-10 Figure 3-5 Historical TOC in the Sweetwater Reservoir ...... 3-13 Figure 3-6 Historical TOC, DOC and SUVA in the Sweetwater Reservoir...... 3-15 Figure 3-7 Iron and Manganese with Precipitation at Loveland Reservoir...... 3-22 Figure 3-8 Iron and Manganese with Precipitation at Sweetwater Reservoir.... 3-23 Figure 3-9 Minerals with Gage Level at Loveland Reservoir ...... 3-26 Figure 3-10 Minerals with Gage Level and Source Contribution at Sweetwater Reservoir ...... 3-26 Figure 3-11 Plankton Counts and TOC in Sweetwater Reservoir...... 3-29 Figure 3-12 Alkalinity in Loveland and Sweetwater Reservoirs ...... 3-33

Figure 4-1 E. coli Historical Sweetwater Raw Daily Data, 1996-2006...... 4-6 Figure 4-2 Landfill Operations...... following page 4-10 Figure 4-3 Groundwater Monitoring Wells and Groundwater Flow Direction at Viejas Landfill ...... 4-11 Figure 4-4 Levels of Benzene in Groundwater – Viejas Landfill...... 4-12 Figure 4-5 Levels of Cis-1,2-dichloroethene in Groundwater – Viejas Landfill.. 4-12 Figure 4-6 Levels of Thallium in Groundwater – Viejas Landfill ...... 4-13 Figure 4-7 Groundwater Monitoring Wells at Jamacha Landfill ...... following page 4-13 Figure 4-8 Levels of Chloride in Groundwater – Jamacha Landfill...... 4-16 Figure 4-9 Levels of Total Dissolved Solids in Groundwater – Jamacha Landfill...... 4-16 Figure 4-10 Levels of Iron in Groundwater – Jamacha Landfill...... 4-17 Figure 4-11 Levels of Manganese in Groundwater – Jamacha Landfill ...... 4-18 Figure 4-12 Levels of Arsenic in Groundwater – Jamacha Landfill...... 4-18 Figure 4-13 Shoreline Fishing at Loveland Reservoir...... following page 4-23 Figure 4-14 Industrial Facilities...... following page 4-32 Figure 4-15 Urban Runoff Diversion System – Site Plan ...... following page 4-41

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Figure 4-16 Wastewater Facilities...... following page 4-43 Figure 4-17 Otay Water District Recycled Water Program ...... 4-48 Figure 4-18 Proposed Highways...... following page 4-52 Figure 4-19 Schematic of Pointe Development near Sweetwater Reservoir ...... 4-52 Figure 4-20 Golf Courses ...... following page 4-53 Figure 4-21 Equestrian Facilities ...... following page 4-66 Figure 4-22 Agricultural Areas ...... following page 4-67 Figure 4-23 2001 Viejas Fire and 2003 Cedar Fire ...... following page 4-72 Figure 4-24 Historical TOC in Sweetwater Reservoir ...... 4-74

Figure 5-1 Maximum Daily Turbidity at the Perdue WTP...... 5-5 Figure 5-2 Distribution System TTHM Quarterly Average of All Sites...... 5-7 Figure 5-3 Distribution System TTHM Locational Running Annual Averages For Sites Associated with Perdue WTP...... 5-7 Figure 5-4 Distribution System HAA5 Quarterly Average of All Sites ...... 5-9 Figure 5-5 Distribution System HAA5 Locational Running Annual Averages For Sites Associated with Perdue WTP...... 5-9

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LIST OF ABBREVIATIONS

AWM – Agriculture, Weights and Measures

BAER – Burned Area Emergency Response BAT – Best Available Technology BCT – Best Conventional Technology BMP – Best Management Practice BOD – Biological Oxygen Demand

CCP – Comprehensive Conservation Plan CDPH – California Department of Public Health CFE – Combined Filter Effluent cfs – Cubic Feet per Second COCs – Constituents of Concern CT – Contact Time CUPA – Certified Unified Program Agency

D/DBP – Disinfectants/Disinfection By-Products DBP – Disinfection By-Product DEH – Department of Environmental Health DEIR - Draft Environmental Impact Report DLR – Detection Limit for Reporting Purposes DPLU – Department of Planning and Land Use

E. coli – Escherichia coli EIR – Environmental Impact Report EMP – Evaluation Monitoring Program

FBR – Filter Backwash Rule

GAC – Granular Activated Carbon gpd – Gallons per Day gpm/sf – Gallons per Minute per Square foot

HAA5 – Haloacetic Acids

IDSE – Initial Distribution System Evaluation IFE – Individual Filter Effluent IESWTR – Interim Enhanced Surface Water Treatment Rule

LRAA – Locational Running Annual Average LT2ESWTR – Long Term 2 Enhanced Surface Water Treatment Rule

MIB - 2-methylisoborneol

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MCL – maximum contaminant level µg/L - Micrograms per Liter mgd – Million Gallons per Day mg/L – Milligrams per Liter MPN/100 mL – Most Probable Number per 100 milliliters MS4 – Municipal Separate Storm Sewer System MTBE - Methyl tert-butyl ether

NDMA – N-nitrosodimethylamine ng/L – Nanograms per Liter NIPDWR – National Interim Primary Drinking Water Regulations NPDES – National Pollution Discharge Elimination System NTU – Nephelometric Turbidity Unit

OES – California Office of Emergency Services Old Bridge – Old Steele Bridge

PCAs – Potential Contaminating Activities PCBs – Polychlorinated Biphenyls Perdue WTP – Robert A. Perdue Water Treatment Plant PODR – Point of Diminishing Return

RAA – Running Annual Average Regional Board – San Diego Regional Water Quality Control Board RIMS – Response Information Management System RV – Recreational Vehicle

SANDAG – San Diego Association of Governments SBWRP – South Bay Water Reclamation Plant SCADA - Systems Control and Data Acquisition SDWA – Safe Drinking Water Act SEMS – Standardized Emergency Management System SOC – Synthetic Organic Compound SSMPS – Sewer System Management Plan SSOPP- Sanitary Sewer Overflow Prevention Plan SSORP- Sanitary Sewer Overflow Response Plan SSO – Sanitary Sewer Overflow State Board – State Water Resources Control Board SUVA – Specific Ultraviolet Light Absorbance SPW – State Project Water SWA – Sweetwater Authority SWPPP – Storm Water Pollution Prevention Plan SWTR – Surface Water Treatment Rule

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TIN – Total Inorganic Nitrogen TSS – Total Suspended Solids TOC – Total Organic Carbon TTHM – Total Trihalomethanes ug/L – Micrograms per Liter URDS – Urban Runoff Diversion System URO – Urban Runoff USEPA – US Environmental Protection Agency USGS – US Geological Survey UV – Ultraviolet light

VOC – volatile organic compound

WDR – Waste Discharge Requirement WQPS – Water Quality Protection Standard WTP – Water Treatment Plant yd3 – Cubic yard YMCA – Young Men’s Christian Association

Sweetwater and Loveland Reservoirs Watershed Sanitary Survey Page xiv First Update – Final Report EXECUTIVE SUMMARY

INTRODUCTION

Drinking water utilities that use surface water are required to conduct a watershed sanitary survey for that source, under the California Surface Water Treatment Rule (SWTR). This survey must be updated every five years. This First Update to the Sweetwater and Loveland Reservoirs Watershed Sanitary Survey covers the period 1996 through 2006.

OBJECTIVES OF THE UPDATE

The overall objective of this First Update is to assess the source water quality of the Sweetwater and Loveland Reservoirs to ensure the ability of the Robert A. Perdue Water Treatment Plant (Perdue WTP) to continue to provide their customers with drinking water that meets all drinking water standards. This First Update also accomplishes some other specific objectives including:

• Identification of significant changes within the last ten years that may have affected source water quality.

• Review and evaluation of selected constituents of interest to identify potential water quality or treatment issues at the water treatment plant. Assess the ability of the Perdue WTP to meet drinking water standards based on current and future regulatory framework, as well as comment on the appropriate level of treatment for pathogens, specifically for Giardia, viruses, and Cryptosporidium.

• Review and evaluation of selected potential contaminating activities to identify potential impacts on source water quality.

• Development of recommendations that are economically feasible and within the authority of the Sweetwater Authority (SWA) to implement. The potential contaminating activities targeted are those that may have the most opportunity to affect source water quality.

KEY FINDINGS AND CONCLUSIONS

The key findings and conclusions for this report are organized as they pertain to source water quality, treatment and regulatory compliance, and watershed contaminant sources. Highlights of these findings and conclusions are presented below.

Source Water Quality

Overall, the Sweetwater Reservoir provides acceptable quality raw water. The raw water can be treated to meet all drinking water standards using conventional

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EXECUTIVE SUMMARY

treatment processes. Key findings for the constituents of interest are presented below.

Turbidity

The peak daily raw water turbidity ranges from 0.3 to 66 nephelometric turbidity units (NTU), with an average value of 6.2 NTU. Most of the peak values occur during the winter months, likely associated with precipitation, local runoff, and increased flows from the Middle Sweetwater River.

Coliform

Over the study period, the total coliform levels ranged from non-detectable to greater than 2,419 most probable number per 100 milliliters (MPN/100 mL). The average total coliform is 292 MPN/100 mL and the median was 20 MPN/100 mL. Only one month had a median total coliform value greater than 1,000 MPN/100 mL which was June 2001. All monthly median E. coli values are always well below 200 MPN/100 mL.

Giardia/Cryptosporidium

There has been extensive monitoring for Giardia and Cryptosporidium in the Sweetwater Reservoir during the study period. There have been very few detects. The maximum Giardia average was 0.0028 cysts per liter and the maximum Cryptosporidium average was 0.0069 oocysts per liter.

Disinfection By-Product Precursors

Organic carbon is present in the Sweetwater Reservoir at levels requiring advanced treatment, with an average total organic carbon (TOC) value of 5.8 mg/L. Organic carbon levels in the Sweetwater Reservoir are influenced by the source water contribution. Imported water resulted in a decrease in organic carbon in the reservoir. Releases from Loveland Reservoir and flows from the Middle Sweetwater River in early 2005 appear to have contributed significantly to the increase of organic carbon levels in the Sweetwater Reservoir.

Bromide levels are elevated, but are likely caused by natural sources.

Volatile and Synthetic Organic Compounds (VOCs and SOCs)

VOC monitoring shows Sweetwater Reservoir was positive for low-level detects of DBPs, generally less than 2 micrograms per liter (µg/L), likely contributed by the recycled washwater from the Perdue WTP. Extensive monitoring shows the low-level presence of a variety of other compounds in the source waters. No constituents are present at levels near applicable standards or health advisories.

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EXECUTIVE SUMMARY

Nitrate

Nitrate levels in all source waters are very low, averaging less than 0.25 milligram per liter (mg/L) as nitrogen. There is no obvious seasonal trend for the nitrate, but there may be a slight increase between Loveland Reservoir and the Sweetwater River Influent. This could be contributed to by urban runoff, groundwater surfacing, or by agricultural runoff from fertilizers or animal waste.

Selected Metals

The average values of iron in the Sweetwater Reservoir are approaching the secondary maximum contaminant level (MCL) of 300 µg/L, with individual samples exceeding it. The average values of manganese in the Sweetwater Reservoir are exceeding the secondary MCL of 50 µg/L. There appears to be an increase of both metals along the Middle Sweetwater River. Reservoir data indicates that both iron and manganese are probably contributed in some part by watershed erosion. Also, lake stratification during summer months may result in an anoxic hypolimnion which could cause resolubilization of iron and manganese from lake sediments which can then be mixed upward into the epilimnion during the fall when destratification occurs. The Sweetwater Reservoir is also likely impacted by Perdue WTP recycle practices. Two other possible sources for increased iron and manganese along the Middle Sweetwater River are the Jamacha Landfill and the sand mines located at the entrance to the Sweetwater Reservoir.

Selected Minerals

Data for the Sweetwater Reservoir show that conductivity levels are slightly above the secondary MCLs recommended levels, but within the upper levels. Chloride levels are within recommended levels. There is a significant increase in minerals between Loveland Reservoir and the Sweetwater River Influent which may be caused by; Jamacha Landfill, urban runoff, groundwater upwelling, or the sand mines located between the Low Flow Barrier and the east end of the Sweetwater Reservoir.

Plankton and Related Constituents

Plankton are clearly present in the Sweetwater Reservoir and have a direct impact on source water quality, including turbidity and TOC. The types of plankton present include algae and cyanobacteria. These result in the detection of the metabolites geosmin and 2-methyisoborneol (MIB) in the Sweetwater Reservoir and can cause significant taste and odor episodes.

The highest levels of geosmin were seen in May 2005 and May 2006, and were related to the presence of Anabaena circinalis. The highest levels of MIB were

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EXECUTIVE SUMMARY

seen in October 2005, and were related to the presence of Pseudanabaena limnetica. The root causes of these taste and odor episodes cannot be determined with the available data, but appear to be quite complex.

Arsenic/Hexavalent Chromium

All arsenic values are below the new federal MCL of 10 µg/L and the Sweetwater Reservoir data are low enough to probably not be impacted by a potentially reduced California Department of Public Health (CDPH) MCL.

Hexavalent chromium was monitored in the Sweetwater Reservoir and was not detected, less than 1 µg/L. There is currently no MCL for hexavalent chromium and therefore no current compliance issues related to hexavalent chromium levels.

Intake Evaluation

Perdue Water Treatment Plant

The Perdue WTP is currently in compliance with all existing drinking water regulations. The Perdue WTP implements conventional filtration processes and meets all current drinking water standards, including MCLs and treatment technology requirements. Below is a summary of the selected treatment and regulatory compliance issues.

Turbidity

The median raw water peak daily turbidity at the Perdue WTP for the period of study was 4.2 NTU and 95 percent of peak daily readings were less than 18.5 NTU. The median settled water peak daily turbidity was 2.2 NTU and 95 percent of peak daily readings were less than 4.4 NTU. This results in a median of 44 percent removal of solids through sedimentation. The median combined filter effluent (CFE) peak daily turbidity was 0.09 NTU and 95 percent of peak daily readings were less than 0.17 NTU. In addition, 99.4 percent of all CFE readings were less than 0.3 NTU. This equates to a median removal of solids of over 97.1 percent through the plant. Perdue WTP meets all current turbidity standards.

Microbiological Constituent Review

The SWA performed monthly distribution system coliform analysis from 1996 through 2006. In 1998, 1999, 2002, 2005, and 2006 there were several reported detects of total coliform within the distribution system, but none of these resulted in a violation of the MCL. There was only one detect of fecal coliform in the distribution system, in 2006. The SWA followed up with additional monitoring

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EXECUTIVE SUMMARY and DHS determined that there was not a significant rise in bacterial counts and that this was not a violation of the MCL.

Disinfection By-Products

The SWA monitors alkalinity and TOC, dissolved organic carbon (DOC), and ultraviolet light at 254 nanometers levels in its raw and treated water on a weekly basis in order to determine treatment technique compliance under the Stage 1 Disinfectants/Disinfection By-Products Rule. From 2001 through 2005, the SWA was in compliance with the treatment technique requirements.

The SWA has collected both total trihalomethanes (TTHM) and haloacetic acids (HAA5) data for its distribution system. DBP levels changed significantly after May 2004 when the SWA began utilizing chlorine dioxide as its primary disinfectant.

The TTHM running annual average (RAA) of all distribution system sites ranged from 16.2 to 74.9 micrograms per liter (µg/L), with an average level of 36.4 µg/L and a median level of 30.9 µg/L during the study period, below the current maximum contaminant level (MCL) of 80 µg/L. When looking only at the data since implementation of chlorine dioxide, the RAA has not exceeded 33.2 µg/L and averages 21.5 µg/L. Peak values have been associated with use of the Sweetwater Reservoir source and typically occur in the second or third quarter and are likely associated with free chlorine application across the filters to combat taste and odor problems associated with plankton.

The individual locational running annual averages (LRAAs) for the sites associated with Perdue WTP treated water ranged from 16.3 to 96.2 µg/L over the study period, with an average level of 49.2 µg/L and a median level of 44.5 µg/L. When looking only at the samples after May 2004 there is a very significant decrease, with some sites having maximum LRAAs over 50 percent lower.

The HAA5 RAA of all distribution system sites ranged from 7.2 to 22.9 µg/L, with an average level of 13 µg/L and a median level of 12.6 µg/L during the study

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EXECUTIVE SUMMARY

period, below the current MCL of 60 µg/L. When looking only at the data since implementation of chlorine dioxide, the RAA has not exceeded 22.9 µg/L and averages 18.3 µg/L. This increase in average HAA5 levels is caused primarily by two sample events, one in April 2005 (quarterly average HAA5 of 34 µg/L) and in August 2006 (quarterly average HAA5 of 46.8 µg/L). Both these times, free chlorine was applied across the filters to assist with severe taste and odor events caused by plankton in the Sweetwater Reservoir.

The individual LRAAs for the sites associated with Perdue WTP treated water ranged from 6.1 to 39.3 µg/L over the study period, with an average level of 18.8 µg/L and a median level of 17.7 µg/L. When looking only at the samples after May 2004 there has not been a decrease in maximum or average values, with all sites having average LRAAs higher than previous. Again, this appears associated with the April 2005 and August 2006 sample results.

Volatile and Synthetic Organic Compounds

The SWA has monitored raw and treated water at Perdue WTP for VOCs and SOCs. There was a single detect of simazine in the Perdue WTP effluent in 1998 at 0.08 µg/L, well below the MCL of 4 µg/L. There was also reported detects of N-nitrosodimethylamine (NDMA) in the Perdue WTP effluent in 2005, ranging from 7.1 to 11 nanograms per liter (ng/L), with an average of 9.4 ng/L. This average is below the current Notification Level of 10 ng/L. This is probably generated in the plant through the treatment process, not source derived.

Inorganics

The treated water samples analyzed for arsenic at the Perdue WTP ranged from non-detectable, less than 1 µg/L, to 4 µg/L with an average of 1 µg/L during the period of study (1996 through 2006). There were no detects (less than 1 µg/L) of hexavalent chromium in the Perdue WTP treated water during the period of study (1996 through 2006).

Aluminum has been monitored regularly in the treated water from the Perdue WTP and ranges from non-detectable to 280 µg/L, with an average of 40 µg/L. There have been no exceedances of primary or secondary standards.

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Nitrate has been monitored regularly in the treated water for compliance purposes and has never exceeded 1.2 mg/L as nitrogen, averaging 0.18 mg/L as nitrogen. This is well below the primary standard of 10 mg/L as nitrogen.

Minerals are monitored in several forms of interest, as total dissolved solids (TDS), conductivity, chloride, bromide, and sulfate. Treated water TDS levels generally exceed the secondary MCL recommended level set by CDPH of 500 mg/L, but are below the upper level for aesthetic purposes (1,000 mg/L). All other constituents meet the secondary MCL consumer acceptance contaminant levels.

Giardia/Virus/Cryptosporidium Reduction Requirements

Based on the total and fecal coliform data for the Sweetwater Reservoir supply, presented in Section 3 as well as above, 3/4/2-log reduction of Giardia/virus/Cryptosporidium appears to be appropriate reduction requirements for the Perdue WTP.

Perdue WTP currently receives reduction credit for 2.5-log Giardia, 2.0-log viruses, and 2-log Cryptosporidium for physical removal. Disinfection with chlorine dioxide and chloramines provides 0.5-log credit for Giardia and 2.0-log credit for viruses. This meets all of the current microbial removal/inactivation requirements of the SWTR and the Interim Enhanced SWTR (IESWTR).

Under the LT2ESWTR, it is uncertain where the Sweetwater Reservoir source water will be placed, but seems possible in Bin 1 based on the available raw water quality during preparation of this report. This may mean that no additional action would be required at the Perdue WTP.

Watershed Contaminant Sources

There are numerous types of potential contaminating activities (PCAs) in the watershed. Nine activities were selected for evaluation in this report based on constituents of interest and predominance in the watershed. Selected findings for each of these activities are provided below.

Spills

Overall, there were no large spills in the watershed. There were 36 spills that occurred in the watershed over the reporting period; 18 spills involving sewage and 18 involving chemicals, primarily petroleum products. The main transportation routes through the watershed are California State Highway Routes 54, 79, 94, and Interstate Highway 8.

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Landfills

There are two landfills within the watershed. The Viejas landfill is located in the Upper Sweetwater watershed and the Jamacha landfill is located in the Middle Sweetwater watershed. Both landfills are inactive Class III municipal solid waste landfills, and both were constructed without liners.

Viejas landfill

The Viejas landfill accepted an estimated 50,000 tons of residential waste, commercial refuse, and non-decomposable inert solids during its operation from 1971 to 1979. The Sweetwater River is located approximately 1,500 feet northwest of the site.

The Viejas landfill currently has six groundwater monitoring wells which are monitored semi-annually. Benzene, cis-1,2-dichloroethene, and thallium have been detected at levels above their respective MCLs (benzene MCL = 1 µg/L, cis-1,2-dichloroethene MCL = 6 µg/L, thallium MCL =0.002 mg/L) in various groundwater monitoring wells. However, thallium and cis-1,2-dichloroethene have not been detected in Loveland Reservoir. Benzene has been detected at Loveland at levels below the drinking water DLR, ranging from 0.008 to 0.01 µg/L.

Jamacha Landfill

The Jamacha landfill accepted an estimated 1.8 million tons of residential waste, commercial refuse, and non-decomposable inert solids during its operation from 1960 to 1978. The Sweetwater River is located approximately 700 feet southeast of the site.

The Jamacha landfill currently has 16 groundwater monitoring wells and 14 piezometers which are monitored semi-annually. Some of the wells are screened in fractured bedrock and some are screened in alluvium/grus. The 1995 Watershed Sanitary Survey identified a vertical constriction of the alluvial soil at a point downstream of the Otay Water District’s water reclamation plant. The presence of this vertical constriction forces the water to the surface, while it would otherwise flow in the alluvium. Due to this vertical constriction, contamination of the alluvium as a result of the Jamacha landfill may have a pathway to reach the Sweetwater River.

Tetrachloroethene (PCE), trichloroethene (TCE), cis-1,2-dichloroethene, 1-4, dichlorobenzene, vinyl chloride, benzene, 1,1-chloroethane, and 1,2- dichloroethane are detected in downgradient wells above their respective MCLs. Data collected by the U.S. Geologic Survey (USGS) indicate that trichloroethene

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EXECUTIVE SUMMARY and cis-1,2-dichloroethene have been detected consistently at low levels at the SWA’s Low Flow Barrier.

An enhanced in-situ bioremediation pilot study was initiated in September 2004 using a microbial culture. The results of the pilot study concluded that bioaugmentation is a feasible remedial alternative for remediation of chlorinated ethenes in fractured bedrock. The full-scale bioremediation project was initiated in March 2007, and results are expected within six months of operation.

According to data in the 2005 annual monitoring report, other constituents of concern are iron, manganese, chloride, total dissolved solids, and arsenic because they are found at levels either above their respective MCLs or the water quality protection standard. It is difficult to determine if elevated levels present in the monitoring wells are naturally occurring or due to the landfill.

Cleanup and Abatement Order 99-42 identified chloride and TDS as constituents of concern (COCs) at the Jamacha landfill site because detected concentrations exceeded water quality objectives of the Basin Plan (800 mg/L for chloride and 3,500 mg/L for TDS in groundwater). However, there are no current remediation plans for TDS and chloride. Furthermore, it should be noted that the bioremediation will also not remove arsenic, iron, or manganese.

Recreation

Recreational uses in the Sweetwater and Loveland watershed consist primarily of camping, picnicking, hiking, fishing, mountain biking, equestrian trails and waterplay. Body contact recreation and boating are not allowed in either Sweetwater or Loveland Reservoirs. However, water play in the Sweetwater River occurs at the Green Valley campground in Cuyamaca Rancho State Park. Body contact also occurs at the Palo Verde Reservoir, which is upstream of Loveland Reservoir. Additionally, there are three golf courses and equestrian trails in the watershed.

SWA manages recreation at the Sweetwater and Loveland Reservoirs. Regular patrols of the Sweetwater and Loveland Reservoirs are conducted on a daily basis.

Recreational uses at Loveland Reservoir primarily consist of fishing and hiking. Recreational uses at the Sweetwater Reservoir include fishing, hiking, and bird watching. The southern shore of the Sweetwater Reservoir opened to the public for fishing in 2004. The Sweetwater Fishing Facility has 2.5 miles of shoreline fishing.

The south side of the Sweetwater Reservoir is included in a network of trails used for horseback riding, mountain biking, and hiking. The 5.5-mile Sweetwater

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Reservoir Riding and Hiking Trail is a County of San Diego trail, operated through an easement granted by the SWA. In December 2006, the County of San Diego applied to the CDPH for an amendment to the SWA’s water supply permit to allow a multi-use hiking, biking, and equestrian trail within the Sweetwater Reservoir property along the northern perimeter of the reservoir. If approved, this would allow for a 14.1-mile loop trail around the reservoir.

There are four private campgrounds in the watershed: The Oakzanita Springs Park is a privately-owned RV campground; the Swallows Sun Island Club; and the Ma-Tar-Awa RV Camper Park and the Alpine Springs RV Park, both owned by the Viejas Indian Tribe.

Urban Runoff

Urban runoff (URO) is a concern in the Upper and Middle Sweetwater watershed because of developing urbanized areas in the watershed, particularly the communities of Rancho San Diego and Spring Valley. The County of San Diego is the lead permittee for a Phase I Municipal National Pollutant Discharge Elimination System (NPDES) Stormwater Permit (Order No. R9-2007-0001 NPDES No. CAS 0108758). There are no incorporated cities within the Upper and Middle Sweetwater watershed, so all of the unincorporated communities are regulated through the County of San Diego. During fiscal year 2005 to 2006, the County of San Diego identified 35 municipal facilities, eight industrial sites, and numerous commercial facilities and construction sites which have the potential to discharge pollutants to the MS4 system within the Sweetwater watershed (San Diego Stormwater Co-Permittees, 2007).

There are six facilities in the Middle and Upper watershed which are covered under the State Water Resources Control Board General Industrial Activities Storm Water Permit. Generally, the sites are in compliance or have incurred minor violations related to monitoring or reporting.

Since 2002, dry weather monitoring has been conducted by the County of San Diego at 25 locations within the Sweetwater watershed. Monitoring site SWT12 is located on the Sweetwater River at the Old Bridge. Monitoring results show high mineral content in the dry weather flows, as well as high total and fecal coliform, and occasionally high levels of nutrients, particularly phosphorus. Copper and zinc were detected in a few samples. This dry weather monitoring data provides evidence that dry weather flows from urban runoff can impact the source quality of the Middle Sweetwater River.

Fortunately, the SWA has been able to divert dry weather flows since the Low Flow Barrier became operational in June 2005. The SWA has been able to divert runoff from the northern side of Sweetwater Reservoir since 1991.

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Wastewater

There are no wastewater treatment plants which discharge treated effluent directly to the Sweetwater River. The four wastewater treatment plants in the watershed, the Ralph W. Chapman Water Reclamation Facility, the Descanso Detention Facility, and the wastewater plants owned by the Viejas and Sycuan Tribes are operated year-round.

There are nine wastewater pump stations located in the watershed. The facilities are owned by either the County of San Diego, Department of Public Works, or Otay Water District. There were two spills which occurred over the ten-year reporting period; one spill occurred at the Jamacha Pump Station and one spill occurred at the Ramona Pump Station.

The six facilities within the watershed which hold waste discharge requirements are the Descanso Detention Water Pollution Control Facility, the Swallows Sun Island Club, the Cuyamaca Rancho State Park, the Oakzanita Springs Park, the Pair-A-Dice Mobile Home Park, and the Ralph W. Chapman Reclamation Facility. With the exception of the Descanso Detention Water Pollution Control Facility and the Ralph W. Chapman Reclamation Facility, the facilities are regulated as they have RV dumpstations which discharge to a septic system.

Both the Viejas and Sycuan Tribes have wastewater treatment plants which serve their respective casinos and tribal population. These wastewater treatment plants are not required to have permits with the Regional Board because they discharge to Indian owned lands.

Proposed Highways and Other Developments

The Upper and Middle Sweetwater watersheds are undergoing development activity which will cumulatively affect the quality of water tributary to, and stored in Sweetwater and Loveland Reservoirs.

The construction of Route 125 began in November 2003. As proposed, this $411 million project will be a four-lane (ultimate 8 to 10 lane), 9.5-mile toll road. More than 200,000 vehicles per day, including a high percentage (more than ten percent) of heavy diesel trucks from both the United States and Mexico, are expected to travel the alignment when it is completed (USGS, 2001). As the Sweetwater Reservoir is downwind of the Route 125 construction site, SWA is

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EXECUTIVE SUMMARY

concerned about vehicle emissions and road dusts which may enter the reservoir through atmospheric deposition. In 1998, the USGS began a study to monitor the effects of the construction and operation of the Route 125 alignment on the water quality in Sweetwater Reservoir. No conclusions can be drawn from the study at this point, as construction is not completed.

A variety of pesticides and herbicides are used on golf courses to maintain the green and keep rodents and pests from burrowing. The most commonly used chemicals are mancozeb and propiconazole. Please refer to Section 4 for a list of chemicals used at each golf course.

The SWA began tracking development in the Sweetwater Reservoir watershed in the late 1970s. More than 5,400 cases have been reviewed by SWA staff since 1978. SWA coordinates with the County of San Diego DPLU staff on discretionary applications for development projects located within the fee collection area. Additionally, comments are provided on development proposals when there are concerns relating to impacts to surface water and/or groundwater that may result from high risk or very high risk potentially contaminating activities.

Please refer to Section 4 for a sampling of developments for which SWA submitted comment letters during the reporting period. A project summary and the issues of concern to the SWA are provided.

Homeless Encampments

The presence of homeless individuals in the San Diego Wildlife Refuge has been an on-going issue since at least 2002.

In the fall of 2006, SWA worked in conjunction with the U.S. Fish and Wildlife Service and the Sheriff’s Department to clear a large encampment near the Steele Canyon Bridge.

Agriculture

There are a variety of agricultural-related activities within the watershed including commercial equestrian facilities, crops, nurseries, and one poultry ranch. There are four equestrian facilities within the watershed. The largest is Bright Valley Farms located in Rancho San Diego, about a half mile from the Sweetwater River.

There are limited areas used for crops within the watershed. According to the San Diego County AWM, the highest acreage within the watershed is in the Alpine area, with 500 acres. However, numerous nurseries are located in El Cajon, particularly along Jamacha Road.

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Since 2001, the San Diego County AWM Agricultural Water Quality Program has been responsible for overseeing stormwater compliance at agricultural businesses that are classified as high priority commercial sites which include golf courses, nurseries and greenhouses, equestrian facilities, and pest control businesses. The San Diego County AWM initiated inspections of equestrian facilities in July 2005. It appears that the inspection of equestrian facilities by the County of San Diego, Department of AWM Agricultural Water Quality Program is directly preventing contamination of the Sweetwater River.

Fires

There were two major wildfires in the Sweetwater watershed over the reporting period; the Viejas Fire of 2001 and the Cedar Fire of 2003.

Water quality was not immediately impacted by these fires since fire-impacted water was not released from Loveland Reservoir from February 2000 to January 2005. The first release of fire-impacted water from Loveland occurred in February 2005. TOC levels in Sweetwater Reservoir increased significantly in February 2005, likely due to the release of fire-impacted water from Loveland and the natural organic debris swept from the Sweetwater River channel as water traveled from Loveland to Sweetwater Reservoir.

TOPICS TO CONSIDER FOR THE 2012 UPDATE

Based on the information collected and evaluated as part of this report in combination with current regulatory projections, a list of potential topics to consider for evaluation in the next update to the Sweetwater and Loveland Reservoirs Watershed Sanitary Survey includes:

• Source water quality for all regulated constituents, • Results of iron, manganese, and arsenic sampling in relation to the Jamacha landfill, • Status of the Jamacha and Viejas landfills, • Increase of reclaimed water use within watershed, • Reevaluation of dry weather monitoring data at sites upstream of Sweetwater Reservoir, • New information available on the occurrence or causes of plankton blooms in Sweetwater Reservoir, and • Urban Runoff/Growth.

RECOMMENDATIONS

A number of recommendations covering water quality and watershed management were developed for this First Update. Please refer to Section 6 for further information on the recommendations.

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SECTION 1 - INTRODUCTION

INTRODUCTION

This report presents the findings of the First Update to the Sweetwater and Loveland Reservoirs Watershed Sanitary Survey. This study covers the period January 1996 through December 2006. The initial Watershed Sanitary Survey was completed in 1995 by the Sweetwater Authority (SWA) in accordance with the California Surface Water Treatment Rule (SWTR).

For assistance with abbreviations and acronyms, the reader is referred to the List of Abbreviations at the front of the report.

OBJECTIVES OF THE UPDATE

A watershed sanitary survey focuses on the first barrier to contamination of the drinking water supply, namely source water protection. Evaluating source water quality and watershed contaminant sources provides key information to aid in understanding how to maintain and possibly improve the first barrier. In order to fully assess the ability of the SWA to treat Sweetwater River water, some evaluation of treatment plant capabilities and treated water quality is also necessary.

This First Update is intended to accomplish the following objectives:

1) Fulfillment of the California SWTR and the Interim Enhanced Surface Water Treatment Rule (IESWTR) requirements that surface water agencies conduct a sanitary survey of the source watershed once every five years. Any significant changes within the last five years that affect source water quality are to be identified in each update. In addition, it is required to comment on the appropriate level of treatment for pathogens, specifically for Giardia, viruses, and Cryptosporidium.

2) Review and evaluation of selected constituents of interest to identify potential water quality or treatment issues at the Robert A. Perdue Water Treatment Plant (Perdue WTP). Assess the ability of the treatment plant to meet standards based on current and future regulatory framework.

3) Review and evaluation of selected potential contaminating activities to identify impacts on source water quality. Determine whether it may be useful to conduct additional monitoring to further assess contaminant levels in the source water or contaminants from a particular watershed source.

4) Identification of appropriate watershed management actions to protect and possibly improve source water quality. Development of recommendations for watershed management actions that are economically feasible and within the authority of the SWA to implement is critical.

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CONSTITUENTS AND POTENTIAL CONTAMINATING ACTIVITIES COVERED IN THE FIRST UPDATE

Several water quality constituents were selected for evaluation as part of the First Update. Table 1-1 presents a summary of the water quality constituents selected and the reason for selection.

Table 1-1 Water Quality Constituents Selected for Evaluation as Part of the First Update

Constituent Reason for Inclusion in First Update Turbidity Turbidity is a measurement of suspended solids in water. Treated water turbidity levels are regulated in the SWTR and the IESWTR. Total Coliform Monthly medians are recommended for evaluation under the SWTR to determine appropriate level of treatment for Giardia and viruses. Fecal Coliform Source water fecal coliform is a more specific surrogate for fecal contamination. Giardia Giardia lamblia is infectious to humans. Source water levels of Giardia are used to determine treatment requirements under the SWTR. Cryptosporidium Cryptosporidium parvum is infectious to humans. Actual source water levels of Cryptosporidium will be used to determine treatment requirements as part of the Long Term 2 Enhanced Surface Water Treatment Rule (LT2ESWTR). Total Organic Carbon Total organic carbon (TOC) is a surrogate measure of disinfection by-products (DBP) precursor material in water. TOC levels in either source or treated water are used to determine treatment requirements in the Stage 1 Disinfectant/Disinfection By-Product Rule (D/DBP). Total Trihalomethanes Total Trihalomethanes (TTHMs) are disinfection by- products formed in disinfected treated water. Treated water levels are regulated by the Stage 1 D/DBP Rule and further regulated under the Stage 2 D/DBP Rule.

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Table 1-1 (continued) Water Quality Constituents Selected for Evaluation as Part of the First Update

Constituent Reason for Inclusion in First Update Haloacetic Acids Haloacetic acids (HAA5) are disinfection by- products formed in disinfected treated water. Treated water levels are regulated by the Stage 1 D/DBP Rule and further regulated under the Stage 2 D/DBP Rule. Volatile and Synthetic Organic Most VOCs and SOCs are formulated for, or are Compounds by-products from, industrial, agricultural, and urban use. Pesticides are a main subgroup of the SOCs used for agriculture and urban application. Many of these constituents have been regulated by the Phase I, II, and V regulations. Arsenic Arsenic is a metal that has a newly reduced primary drinking water standard. DHS may also reduce the standard within the next year. Hexavalent Chromium Hexavalent chromium is a metal that currently has no drinking water standard; it is regulated as part of the combined primary standard for total chromium. DHS is expected to adopt a primary drinking water standard for hexavalent chromium within the next year. Inorganics As requested by the SWA, nitrate, iron, manganese, and minerals such as TDS, conductivity, chloride, bromide, and sulfate were examined. Nitrate has a primary MCL, and the remaining constituents have secondary MCLs with the exception of bromide. Bromide is of interest due to the formation of brominated disinfection by-products. Plankton, 2-methylisoborneol SWA has experienced an increase in taste and odor (MIB), geosmin, total inorganic episodes in Sweetwater Reservoir since 2005. nitrogen, and chlorophyll a Plankton and other related constituents were examined to identify possible causes for these episodes. Endocrine Disruptors Many endocrine disruptors may have been introduced to surface or ground waters from domestic and industrial sewage treatment systems and wet-weather runoff. Endocrine disruptors have been included as data is available from the study conducted by the U.S. Geological Survey.

Nine potential contaminating activities were selected for review as part of the First Update: spills, landfills, recreation, urban runoff, wastewater, proposed highways and other development, homeless encampments, agriculture, and fires. Each of these

Sweetwater and Loveland Reservoirs Watershed Sanitary Survey Page 1-3 First Update – Final Report SECTION 1 - INTRODUCTION activities can contribute at least one of the constituents identified in Table 1-1 to the source water. These activities were selected based on their presence in the watershed, and were identified by SWA as key contaminating activities.

DESCRIPTION OF HOW THE FIRST UPDATE WAS CONDUCTED

The project team consisted of a Technical Committee comprised of representatives from the SWA and the consultant team of Palencia Consulting Engineers and Starr Consulting. The Technical Committee participated in developing the scope of work and reviewed identification and development of key findings and recommendations.

The consultant team obtained information from the SWA through a survey that addressed the Perdue WTP’s process, including a discussion of treatment challenges and changes since the 1995 Watershed Sanitary Survey. Raw and treated water quality data was also provided by the SWA.

The consultant team collected information on contaminant sources in the watershed through literature reviews, Internet searches, and discussions with various agencies’ staff. A bibliography and list of contacts are provided in Appendix A.

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REPORT ORGANIZATION

Section 1 – Introduction

This section describes the objectives of the First Update, lists the main constituents and potentially contaminating activities covered in the First Update, describes how the First Update was conducted, and includes a description of the basic report organization.

Section 2- The Watershed and Supply Systems

This section is largely descriptive and provides: (1) a brief overview of the physical, hydrologic, and land use characteristics of the watershed, (2) a description of the existing water supply system, and (3) contains watershed maps delineating the watershed and outlining land use and land ownership in the watershed. For more detailed descriptive information on watershed characteristics, the reader is referred to the 1995 Watershed Sanitary Survey.

Section 3 – Source Water Quality Review

This section provides a review of the constituents of interest, including an explanation for their selection and a summary of the data obtained for the period of study for each constituent.

Section 4 – Watershed Contaminant Sources Review

This section describes pertinent characteristics of each of the nine potential contaminating activities that were reviewed as part of this First Update. If applicable, each potential contaminating activity will include a discussion on background and occurrence, seasonal patterns, water quality issues and data review, regulation and management, and source water protection activities.

Section 5 - Intake Evaluation

This section contains an evaluation of the Perdue WTP treated water quality, as well as an evaluation of the Perdue WTP’s ability to meet the SWTR as well as other existing and future regulations.

Section 6 – Recommendations

This section contains a table of recommendations and significant changes since the 1995 Watershed Sanitary Survey.

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WATERSHED DESCRIPTION

This section provides an overall description of the watershed and summarizes physical, hydrologic, and land use characteristics. Major watershed characteristics have changed little since the original 1995 Watershed Sanitary Survey. For a more detailed account of this information, the reader is referred to the 1995 Watershed Sanitary Survey. This section also provides a description of the Sweetwater Authority (SWA) water supply system, including a brief description of the Robert A. Perdue Water Treatment Plant (Perdue WTP).

The Sweetwater River is a 40-mile long ephemeral river beginning at Cuyamaca Peak in eastern San Diego County, flowing westerly and terminating in San Diego Bay. The Sweetwater River watershed is divided into three hydrological areas or basins; the Lower Sweetwater hydrologic area, the Middle Sweetwater hydrological area, and the Upper Sweetwater hydrologic area as shown in Figure 2-1. Since the Lower Sweetwater hydrologic area does not contribute runoff directly or indirectly to the Sweetwater Reservoir, the Lower hydrologic area is not included in this survey. The focus of this report will be on the Middle and Upper Sweetwater hydrological areas. The Middle Sweetwater hydrological area is 83.6 square miles, and the Upper Sweetwater hydrological area is 97.8 square miles. The Middle Sweetwater hydrological area includes Sweetwater Reservoir and the Middle Sweetwater River, and the Upper Sweetwater hydrological area includes Loveland Reservoir.

Unincorporated rural and suburban communities characterize the middle watershed. The upper watershed contains large undeveloped areas within the Cleveland National Forest, Cuyamaca Rancho State Park, the unincorporated communities of Descanso and Alpine, and the Viejas Indian Reservation.

SWA owns and operates the dams at Sweetwater and Loveland Reservoirs and releases water from the Loveland Reservoir to provide input for the Sweetwater Reservoir, from which water is withdrawn for treatment at the Perdue WTP. The Middle Sweetwater River and its alluvial deposits serve as a natural conduit for transporting water from Loveland to Sweetwater Reservoir. Because the Sweetwater River is nearly dry most of the year, SWA generally releases from Loveland Reservoir only in the rainy season to minimize water loss to the alluvial deposits. Releases are also timed to avoid impacts to the arroyo toad. The arroyo toad was listed as endangered by the federal government in 1993 and is a State Species of Special Concern. As the arroyo toad uses river or stream habitats for reproduction, water transfers from Loveland Reservoir can only be initiated when ambient flows in the Sweetwater River are high or swift moving (generally occurring in the winter months) in order to minimize impacts to breeding activity.

Precipitation

Figure 2-2 shows monthly precipitation totals from the SWA’s rain gage at Sweetwater Dam from September 1996 to December 2006. The average annual rainfall over this

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ten year period was 11.45 inches at Sweetwater Reservoir and 14.8 inches at Loveland Reservoir. Table 2-1 shows annual rainfall totals at both Sweetwater and Loveland Reservoirs. As measured at the Sweetwater Reservoir rain gage, the drier years were 1999, 2000, 2002, and 2006, and the wettest year was 1998.

Figure 2-2 Monthly Rainfall Totals at Sweetwater Reservoir Dam, 1996-2006

10 9 8 7 6 5 4 3

Rainfall, inches 2 1 0

6 7 7 8 4 4 5 5 6 6 -9 -9 -9 -9 0 -0 0 -0 -0 -0 p p r p ep ar ep ar-98ep S M S M S Mar-99Sep-99Mar-00Sep-00Mar-01Sep-01Mar-02Sep-02Mar-03Sep-03Mar- Se Mar- Se Ma Se

Flow

The United States Geologic Survey (USGS) maintains two stream flow gages on the Sweetwater River; one upstream of Loveland Reservoir near Descanso and one near Dehesa on the Sloan Ranch truck trail along the Middle Sweetwater River. The stream gage near Dehesa has been in operation since October 2005 and was installed by USGS at the request of the SWA. Since October 2005, the highest flows recorded were just over 300 cfs for a two-week period in January 2006. Most of the time, zero flow is recorded at this location. The historical record for the flow gage near Descanso dates from 1905 to the present.

Table 2-1 Annual Rainfall Totals at Sweetwater and Loveland Reservoirs

Year Sweetwater Reservoir, Loveland Reservoir, inches inches 1997 10.67 14.38 1998 21.60 28.84 1999 6.70 8.99 2000 7.68 10.11 2001 10.50 13.51 2002 7.62 8.97 2003 10.99 14.41 2004 17.52 20.5 2005 13.58 16.4 2006 7.66 11.83

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Land Use

The majority of the land use in the Upper and Middle watersheds is classified as rural, with 97 percent rural and 3 percent urban for the Upper Sweetwater watershed, and 82 percent rural and 18 percent urban for the Middle watershed. Table 2-2 provides further information for the rural and urban land use categories, and Figure 2-3 shows land use in the watershed. There are no incorporated cities in the Upper and Middle Sweetwater watershed.

There has been little change over the last ten years regarding land use. The 1995 Watershed Sanitary Survey indicated that the Upper Sweetwater watershed was 2 percent urban and 98 percent rural, and the Middle Sweetwater watershed was 15 percent urban and 85 percent rural.

Table 2-2 Land Use in the Upper and Middle Sweetwater Watersheds

Land Use Upper Sweetwater Middle Sweetwater Total Area, acres 62,589 53,488 Urban Land Use Residential 587 5,425 Commercial, Schools 1,284 2,755 Industrial 8 441 Commercial, Recreation 216 1,004 Urban Percentage 3.35% 17.99% Rural Land Use Rural Residential 6,866 9,540 Agriculture 2,212 686 Parks, Open Space 19,544 12,485 Vacant Land 31,872 21,153 Rural Percentage 96.65% 82.01% Source: SANDAG 2006 Land Use Data

Population

According to the San Diego Association of Governments (SANDAG) 2000 Regional Forecast Data by Census Tract, the estimated population of the Upper Sweetwater watershed was 6,637, and the Middle Sweetwater watershed was 64,767 in 2006. Since the 1995 Watershed Sanitary Survey, the population has increased 25 percent, from 57,000 in 1990 for both Upper and Middle watersheds.

As shown in Figure 2-4, the population by 2030 is estimated to increase by 38 percent to 89,615 for both the Upper and Middle Sweetwater watersheds. Figure 2-5 shows the breakdown of the population by community planning areas, as defined by the County of

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San Diego. The majority of the population resides in the Spring Valley and Valle De Oro community planning areas.

Land Ownership

The major landowners within the Upper watershed are the U.S. Forest Service and California State Parks, as shown in Figure 2-6. The Middle watershed is primarily privately owned lands. Table 2-3 shows the breakdown of land ownership for the Upper and Middle Sweetwater watersheds.

Table 2-3 Land Ownership in Upper and Middle Watersheds

Land Owner Percent of Upper Percent of Middle Watershed Watershed Bureau of Land 0.03 0.4 Management California Department of 0 1.44 Fish and Game California State Parks 34.25 0 CalTrans 1.25 0.49 City Owned 0 0.06 County of San Diego 0.49 0.68 Fire Districts 0 0.01 Indian Reservations 3.14 1.35 Other Federal 0 3.25 Private 18.17 74.91 Sanitation Districts 0 0.02 School Districts 0.01 0.94 State of California 0.07 2.52 U.S. Fish and Wildlife 0 8.26 Service U.S. Forest Service 36.86 1.46 Water Districts 5.74 4.20

SWA owns approximately 895 acres surrounding the Sweetwater Reservoir. SWA also owns approximately 3,292 acres surrounding the Loveland Reservoir.

In order to better control recreational activities at Loveland Reservoir, the SWA exchanged land near Descanso for land surrounding the Loveland Reservoir with the U.S. Forest Service in December 1997.

Sweetwater and Loveland Reservoirs Watershed Sanitary Survey Page 2-4 First Update – Final Report SECTION 2 – WATERSHED AND WATER SUPPLY SYSTEMS

WATER SUPPLY SYSTEM

Background

The SWA is a publicly owned, joint-powers water agency with policies and procedures established by a seven-member Board of Directors. Five of the Directors are elected by the citizens of the South Bay Irrigation District. Two Directors are appointed by the Mayor of National City, subject to City Council confirmation.

SWA provides safe, reliable water service to approximately 181,000 people in National City, Bonita and the western and central portions of Chula Vista. Its customers include residential, business, government, industrial and agricultural water users in an area covering more than 21,000 acres in the South Bay region of San Diego County, as shown in Figure 2-7.

The SWA service area receives water from four sources: the Sweetwater River, deep freshwater wells in National City, semi-brackish groundwater from wells in Chula Vista and National City, and imported water which is drawn from the Colorado River or the State Water Project in Northern California. Table 2-4 shows the breakdown of total system production from 1996 to 2006.

Table 2-4 Breakdown of System Production for the Sweetwater Authority 1996 to 2006

Water Source Percentage of System Production Sweetwater and Loveland Reservoir 48% National City wells 8% Imported Water 34% Groundwater Desalination 10%

The Richard A. Reynolds Groundwater Desalination Facility treats semi-brackish groundwater from six wells in Chula Vista and National City. It is planned that the Reynolds Groundwater Desalination Facility will treat water from four alluvial wells under the influence of the Sweetwater River by 2011.

The Sweetwater Reservoir receives water from three sources: runoff from the Sweetwater watershed, imported water, and released water from Loveland Reservoir. The Perdue WTP treats water withdrawn from the Sweetwater Reservoir and also treats imported water. Typically, imported water is treated from November through May, and local water from Sweetwater Reservoir is treated primarily during the summer months. Alternatively, imported water can be added to Sweetwater Reservoir before being treated at the Perdue WTP. Approximately 10,000 acre-feet of imported water is taken annually.

Sweetwater and Loveland Reservoirs Watershed Sanitary Survey Page 2-5 First Update – Final Report SECTION 2 – WATERSHED AND WATER SUPPLY SYSTEMS

Occasionally, SWA may purchase water that has been treated by the Metropolitan Water District of Southern California’s filtration plants.

Sweetwater and Loveland Reservoirs

The Sweetwater Reservoir has a reservoir storage of 28,079 acre-feet, and the dam was constructed in 1888. The Loveland Reservoir has a reservoir storage of 25,287 acre-feet, and the dam was constructed in 1945.

Robert A. Perdue Water Treatment Plant

The 30 million gallons per day (mgd) Robert A. Perdue WTP was originally constructed in 1959 as a direct filtration plant. Today, it is a conventional filtration plant. It consists of chemical treatment, chemical mixing using pumped diffusion, flocculation and sedimentation through conventional horizontal-flow rectangular basins, and dual-media filters. Additional information on the operation of the Perdue WTP is provided in Section 5.

Sweetwater and Loveland Reservoirs Watershed Sanitary Survey Page 2-6 First Update – Final Report ANZA BORREGO OCEANSIDE DESERT STATE PARK SANTA YSABEL INDIAN RESERVATION B reek uena V ista C LAKE WOHLFORD Twin Oaks AIR PARK Calaveras CLEVELAND Lake 78 Jesmond Dene NATIONAL Buena Vista Lagoon Lake Wohlford FOREST SAN MARCOS SANTA YSABEL Dixon Lake INDIAN RESERVATION

CARLSBAD k ree a C nd io ed H a gu A MESA GRANDE 2006 Watershed Survey Sanitary Agua Hedionda Lagoon 79 INDIAN RESERVATION MACARIO S2 CANYON PARK SANTA YSABEL ESCONDIDO INDIAN RESERVATION McCLELLAN-PALOMAR AIRPORT

Lake San Marcos

Sutherland Reservoir

a Santa Ysabel

r e e k San Pasqual La Costa Harmony Grove SAN DIEGO WILD ANIMAL PARK SAN PASQUAL OPEN SPACE Scissors Crossing Batiquitos Lagoon PARK Del Dios Santa Ysabel Creek KIT CARSON PARK Leucadia 5 ELFIN FOREST RECREATIONAL RESERVE Julian Lake Hodges

ek re Banner C o id nd co Es

San Dieguito 15 Reservoir Ramona ENCINITAS Rancho Bernardo

Olivenhain r e iv R RAMONA AIRSTRIP o t i u

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n Sa MOUNT COUNTY PARK GOWER Cardiff by the Sea Rancho Santa Fe OPEN SPACE PRESERVE SAN ELIJO COUNTY PARK AND INAJA San Elijo Lagoon ECOLOGICAL RESERVE San Diego Country Estates INDIAN RESERVATION Lake Poway

Lomas Santa Fe BLACK MOUNTAIN SOLANA BEACH PARK Cuyamaca Reservoir San Dieguito Lagoon Penasquitos 67

DEL MAR 56 Carmel Valley POWAY 79 Watershed BoundaryCLEVELAND NATIONAL FOREST

San Vicente Reservoir BARONA Los Penasquitos Lagoon INDIAN RESERVATION L CUYAMACA RANCHO o s LOS PENASQUITOS P e n a STATE PARK s q CANYON PRESERVE u i t CAPITAN GRANDE o Miramar s SYCAMORE

C r e e Reservoir INDIAN RESERVATION k CANYON TORREY PINES Mira Mesa COUNTY PARK STATE RESERVE OAK OASIS Scripps Miramar Ranch COUNTY EL CAPITAN Sorrento Valley OPEN SPACE PRESERVE COUNTY OPEN SPACE PRESERVE El Capitan Reservoir TORREY PINES GLIDER PORT Eucalyptus Hills EL MONTE LOUIS A. STELZER COUNTY PARK MIRAMAR NAVAL AIR STATION COUNTY PARK Sweetwater River CLEVELAND NATIONAL FOREST San Die University SANTEE go River Mt. Laguna Lake Jennings City MIRAMAR NAVAL Lakeside AIR STATION Blossom Valley MARIAN BEAR Santee Lakes MEMORIAL PARK CUYAPAIPE 52 Flinn Springs VIEJAS INDIAN INDIAN RESERVATION Descanso RESERVATION La Jolla MISSION TRAILS REGIONAL PARK 8 Alpine Clairemont Tierrasanta Harbison Canyon Pine Valley GILLESPIE FIELD

r e iv R o g ie D Bostonia n a S Fletcher Hills Crest Palo Verde Lake MONTGOMERY FIELD TECOLOTE CANYON San Carlos Pacific Beach NATURAL PARK Serra Mesa EL CAJON Lake Murray Loveland Reservoir LA MESA Dehesa Mission Linda Vista Grantville Upper Basin Bay SYCUAN INDIAN RESERVATION Corte Madera Mission Beach 163 Normal Heights 125 Lake Mission Valley Mt. Helix r ve Ri ater etw we S Hillcrest Casa de Oro M A East San Diego MCRD Jamacha Middle Basin RE Ocean Beach Rancho San Diego LINDBERGH FIELD NTC BALBOA SAN DIEGO LovelandCLEVELAND Reservoir NATIONAL FOREST LA POSTA PARK Spring Valley INDIAN RESERVATION Point Loma LEMON San Diego Bay Jamul Centre City 15 Encanto GROVE La Presa Logan NORTH ISLAND Heights NAVAL AIR STATION Barrett Lake LAKE MORENA 54 COUNTY PARK

Sweetwater Reservoir 75 Paradise Hills Lake Morena FORT ROSECRANS CORONADO NATIONAL CAMPO CABRILLO U.S. NAVAL INDIAN AMPHIBIOUS BASE SWEETWATER Location Map NATIONAL Morena Village RESERVATION MONUMENT CITY COUNTY PARK Bonita

Figure 2-1 r e iv R ter a tw ee Sw Sweetwater Reservoir Upper Otay Reservoir Dulzura Lower Basin µ CAMPO

75 INDIAN RESERVATION

r 05102.5 Miles

a r

z l u CHULA VISTA D Coronado Cays PACIFIC OCEAN Lower Otay Reservoir

Castle Park

t a

e r Campo Barrett Junction USN 805 RADIO STATION Potrero Palm City Otay Lower Basin not BROWN FIELD IMPERIAL BEACH RNIA RICA/CALIFO TES OF AME part of this Survey UNITED STA IMPERIAL BEACH 905 NIA Tecat e JA CALIFOR NAVAL AIR STATION ICANOS/BA NIDOS MEX San Ysidro ESTADOS U T TIJUANAi juana River RIVER NATIONAL ESTUARINE RESEARCH RESERVE BORDER FIELD MEXICO STATE PARK AEROPUERTO DE TIJUANA

Playas de Tijuana TIJUANA ut79 Cuyamaca Reservoir

POWAY CLEVELAND NATIONAL FOREST

San Vicente Reservoir BARONA INDIAN RESERVATION CUYAMACA RANCHO STATE PARK SYCAMORE CAPITAN GRANDE CANYON INDIAN RESERVATION COUNTY PARK OAK OASIS COUNTY EL CAPITAN OPEN SPACE PRESERVE COUNTY ut79 OPEN SPACE PRESERVE El Capitan Reservoir Eucalyptus Hills EL MONTE LOUIS A. STELZER COUNTY PARK TION COUNTY PARK CLEVELAND NATIONAL FOREST

San Die SANTEE go River M Lake Jennings Lakeside Blossom Valley Santee Lakes Flinn Springs VIEJAS INDIAN RESERVATION Descanso 8 ILS ¦¨§ RK Alpine Harbison Canyon Pine Valley GILLESPIE FIELD Bostonia Fletcher Hills Crest Palo Verde Upper Basin ut67 Lake San Carlos 2006 Watershed Sanitary Survey N EL CAJON Legend Loveland Reservoir LA MESA Dehesa Spaced Rural Residential Single Family Residential SYCUAN INDIAN RESERVATION Mobile Homes Corte Madera ¦¨§125 Lake Multi-Family Residential Mt. Helix ut54 Shopping Centers er Riv ter twa ee Commercial and Office w S Casa de Oro Middle Basin Heavy Industry Light Industry t94 u ¦¨§94 Jamacha Rancho San Diego Extractive Industry Transportation, Communication, Utilities CLEVELAND NATIONAL FOREST Education Spring Valley Institutions MON Jamul ut94 Commercial Recreation ROVE La Presa Parks Intensive Agriculture

Barrett Lake LAKE MORENAExtensive Agriculture COUNTY PARK µ Undeveloped ut54 00.81.60.4 Miles Water Sweetwater Reservoir Mililtary e Hills Lake Morena Existing Land Use EETWATER Figure 2-3 OUNTY Morena Village Figure 2-4 - Population in the Watershed

89,614 81,042 90,000 75,100 71,404 80,000

70,000

60,000

50,000

40,000

30,000

20,000

10,000

0 2006 2010 2020 2030 Loveland Basin 6,637 6,206 7,695 9,735 Sweetwater Basin 64,767 68,894 73,348 79,880 Based on SANDAG 2030 Regional Forecast data by Census Tract (Jan 2007) Community Plan Area Population Cuyamaca Reservoir Alpine 11,806

2006 Watershed Survey Sanitary Central Mountain 1,435 Crest-Dehesa 6,847 POWAY Jamul-Dulzura 3,458 Spring Valley 21,198 CLEVELAND NATIONAL FOREST San Vicente Reservoir BARONA SweetwaterINDIAN RESERVATION 30 CUYAMACA RANCHO STATE PARK SYCAMORE Valle do Oro 26,630 CAPITAN GRANDE CANYON 67 INDIAN RESERVATION COUNTY PARK Total 71,404 OAK OASIS 79 amar Ranch COUNTY EL CAPITAN OPEN SPACE PRESERVE COUNTY OPEN SPACE PRESERVE El Capitan Reservoir Eucalyptus Hills EL MONTE LOUIS A. STELZER COUNTY PARK AMAR NAVAL AIR STATION COUNTY PARK Central Mountain Lakeside CLEVELAND NATIONAL FORE S San Die go River

SANTEE Lake Jennings Lakeside Blossom Valley Santee Lakes 52 Flinn Springs VIEJAS INDIAN RESERVATION Descanso MISSION TRAILS 8 REGIONAL PARK Alpine Harbison Canyon Pine Valley GILLESPIE FIELD

r e iv R o g ie D Bostonia n Crest Alpine Palo Verde Fletcher Hills Lake San Carlos EL CAJON Upper Basin Lake Murray Loveland Reservoir LA MESA Dehesa LEGEND SYCUAN Population by CommunityPlanning Area INDIAN RESERVATION Corte Madera 125 Lake Alpine

Mt. Helix er iv Crest-Dehesa R ter twa ee w Central Mountain Valle De Oro S Casa de Oro Crest-Dehesa Jamacha Middle Basin Rancho San Diego Jamul-Dulzura CLEVELAND NATIONAL FOREST Figure 2-5 Spring Valley Lakeside LEMON Jamul canto Spring Valley Spring Valley GROVE La Presa Sweetwater 54 Barrett Lake LAKE MORENA COUNTY PARK Jamul-Dulzura Valle De Oro Sweetwater Reservoir Paradise Hills Lake Morena Sweetwater 94 SWEETWATER COUNTY Morena Village PARK Bonita

r e iv R ter a tw µ e e Sw Upper Otay Reservoir 0120.5 Miles Dulzura 805 CAMP O

INDIAN RESER

e r STA C ut79 Cuyamaca Reservoir

POWAY CLEVELAND NATIONAL FOREST BARONA San Vicente Reservoir INDIAN RESERVATION CUYAMACA RANCHO STATE PARK SYCAMORE CAPITAN GRANDE CANYON INDIAN RESERVATION COUNTY PARK OAK OASIS COUNTY EL CAPITAN OPEN SPACE PRESERVE COUNTY ut79 OPEN SPACE PRESERVE El Capitan Reservoir Eucalyptus Hills EL MONTE LOUIS A. STELZER COUNTY PARK ION COUNTY PARK CLEVELAND NATIONAL FOREST

San Dieg SANTEE o River M Lake Jennings Lakeside Blossom Valley Santee Lakes Flinn Springs VIEJAS INDIAN RESERVATION Descanso 8 ILS ¨¦§ RK Alpine Harbison Canyon Pine Valley GILLESPIE FIELD Bostonia Fletcher Hills Crest Palo Verde Upper Basin 2006 Watershed Sanitary Survey ut67 Lake Land Ownership San Carlos N EL CAJON Bureau of Land Management Loveland Reservoir California Department of Fish and Game LA MESA Dehesa California State Parks SYCUAN Caltrans INDIAN RESERVATION Corte Madera City Owned ¨¦§125 Lake County of San Diego Mt. Helix ut54 r v e Ri ter twa ee Fire Districts w S Casa de Oro Middle Basin Indian Reservations t94 Military Reservations u ¨¦§94 Jamacha Rancho San Diego Other Federal Other Special Districts CLEVELAND NATIONAL FOREST Port of San Diego Spring Valley MON Jamul Sanitation Districts ut94 ROVE School Districts La Presa State of California State of California Land Commission Barrett Lake LAKE MORENA µ U.S. COUNTYFish & Wildlife PARK Service ut54 00.81.60.4 Miles U.S. Forest Service Sweetwater Reservoir e Hills Water DistrictsLake Morena Existing Land Ownership EETWATER Figure 2-6 OUNTY Morena Village 15 8 LEGEND Normal Heights Service Area 125 Mt. Helix South Bay Irrigation District City of National City Casa de Oro Eastµ San Diego 0120.5 Miles 94 SAN DIEGO Middle Basin Spring Valley LEMON Encanto GROVE La Presa 15 Logan Heights

Sweetwater Reservoir Paradise Hills

54 NATIONAL SWEETWATER CITY COUNTY PARK Bonita Sweetwater River

Lower Basin

CHULA VISTA

805 5

Castle Park

Palm City Otay Otay River

Water Service Area 2006 Watershed Sanitary Survey BROWNFigure FIELD 2-7 SECTION 3 – SOURCE WATER QUALITY REVIEW

This section provides an overall review of the source water quality data available for the Sweetwater Reservoir as well as the water sources which contribute to the reservoir, including Loveland Reservoir, local drainage, and raw imported water. The sources of raw water quality data include an extensive compliance and watershed monitoring program for the Sweetwater Authority (SWA), which is detailed in Appendix B, several ambient monitoring programs by the United States Geologic Survey (USGS), and ambient dry weather monitoring by Project Clean Water. Table 3-1 provides a summary of the data evaluated. This section provides a review of the constituents of interest, including an explanation for their selection and a summary of the data obtained for the period of study, for each constituent. The period of study for this Watershed Sanitary Survey is 1996 through 2006.

Table 3-1 Summary of Source Water Quality Data Evaluated Agency Key Data Collected Sampling Location All Title 22 Regulated and Unregulated Constituents, TOC/DOC, Bromide, UV254, SWA Total Coliform and E. coli, Giardia and Sweetwater Reservoir Cryptosporidium, Plankton, MIB, Geosmin, Chlorophyll a, Nutrients Title 22 Metals, Minerals and Secondary Regulated Constituents, TOC/DOC, SWA Loveland Reservoir Bromide, UV254, Nutrients, Total Coliform and E. coli Title 22 Metals, Minerals and Secondary Sweetwater River Influent, Raw SWA Regulated Constituents, TOC/DOC, Imported Water Bromide, Nutrients

Semi-Volatile Compounds, Anions, SWA Low Flow Barrier TOC/DOC, Conductivity, Chloride

SWA Total Coliform and E. coli Sweetwater River at Wood Bridge

Loveland Reservoir, Low Flow Barrier, Sweetwater Reservoir Endocrine Disrupters (Pesticides, USGS (Center of Minimum Pool, East End Wastewater Compounds, Pharmaceuticals) Reservoir, Pump Tower), Raw Imported Water Loveland Reservoir (East End and Near Dam), Sweetwater Reservoir VOCs and SOCs USGS (Center of Minimum Pool, East End

Reservoir, Pump Tower), Raw Imported Water Project Clean Conductivity, Nutrients, Nitrate, Total and Sweetwater River at Steele Canyon Water Fecal Coliform, Enterococcus and Old Steele Bridge

For assistance with abbreviations and acronyms, the reader is referred to the List of Abbreviations at the front of the Report.

Sweetwater and Loveland Reservoirs Watershed Sanitary Survey Page 3-1 First Update – Final Report SECTION 3 – SOURCE WATER QUALITY REVIEW

OVERALL WATER QUALITY SUMMARY

The summary of overall water quality is based on an evaluation of the Robert A. Perdue Water Treatment Plant (Perdue WTP) intake data (also called raw water) supplemented by the other watershed monitoring data and comparison to drinking water standards for the constituents currently regulated. This includes all constituents with primary and secondary Maximum Contaminant Levels (MCLs) and unregulated constituents that have Notification Levels set by the California Department of Public Health (CDPH). In general, it is assumed that if the raw water is below these limits, then the treated water (also called finished water) will be also. Compliance with MCLs and Notification Levels are typically based on treated water sample results. Appendix B contains summaries of the data used for this review. Figure 3-1 shows source water quality monitoring locations within the watershed.

It is important to note that the Perdue WTP can utilize either Sweetwater Reservoir water, raw imported water, or a blend. SWA provided a summary of the periods of use for each water supply; this is provided in Appendix C.

Overall, the Sweetwater Reservoir provides acceptable quality raw water. The raw water can be treated to meet all drinking water standards using conventional filtration processes. The SWA converted to chlorine dioxide as a primary disinfectant in May 2004 to prevent development of high levels of disinfection by-products (DBPs) in the distribution system. The individual intake evaluation for the treated water and regulatory compliance is presented in Section 5.

SELECTED CONSTITUENT REVIEW

This section contains a general discussion of selected water quality constituents and the reasons why they were selected for further evaluation. The constituents selected for further review in this report include turbidity, microbial constituents, disinfection by- product precursors, volatile organic compounds (VOCs), synthetic organic compounds (SOCs), nitrate, selected metals, selected minerals, plankton and related constituents, arsenic, and hexavalent chromium. The constituents’ general characteristics, seasonal and historical trends, and significance with respect to existing and potential future regulations are presented, along with data analysis and review. Additional evaluation of some of these constituents, with respect to treated water quality and regulatory compliance, is presented in Section 5.

The constituents selected for further review were selected based on several criteria including; existing or upcoming regulatory standards, critical operational evaluation parameters, and relevance to significant potential contaminating activities. These items are discussed in the background section for each constituent. Table 3-2 shows the relationship between potential contaminating activities and water quality constituents.

Sweetwater and Loveland Reservoirs Watershed Sanitary Survey Page 3-2 First Update – Final Report SECTION 3 – SOURCE WATER QUALITY REVIEW

Table 3-2 Relationship Between Potential Contaminating Activities in the Sweetwater and Loveland Reservoirs Watershed and Source Water Quality

Water Quality Spills Agriculture Landfills Recreation Urban Wastewater Development Homeless Fires Constituents Runoff Encampments Turbidity √ √ √ √ √ √ √ Microbial √ √ √ √ √ √ √ Constituents Disinfection By- √ √ √ √ √ √ Product Precursors VOC/SOC √ √ √ √ √ Nitrate √ √ √ √ √ Metals √ √ √ Minerals √ √ Plankton/ √ √ √ √ √ Related Constituents Arsenic √ √ Hexavalent √ Chromium

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Turbidity

General Characteristics and Background

Turbidity is the measurement of light scatter in water and provides a measure of the degradation of clarity in water. Clarity is typically degraded by suspended colloids and fine suspended solids such as clay and organic particulates. Turbidity is measured to evaluate the efficiency of the treatment process at removing these particles and also to comply with regulatory requirements.

Turbidity was selected for further evaluation since most facilities, including the Perdue WTP, optimize pretreatment processes to maximize turbidity removal in order to reduce the potential for pathogens, such as Giardia and Cryptosporidium, to be present in treated drinking water. Turbidity is monitored throughout the treatment plant to ensure that particles are removed. Turbidity has been assumed to be an indicator constituent for the presence of Giardia and Cryptosporidium. However, turbidity alone may be a poor predictor of microbiological quality. It has also been found that the presence of suspended matter can interfere with disinfection of microorganisms.

Current drinking water regulations require that the combined filtered effluent be less than 0.3 nephelometric turbidity units (NTU) in 95 percent of monthly measurements and that the turbidity never exceed 1 NTU. Continuous turbidity monitoring for individual filters is required.

High turbidity levels in surface water sources, such as the Sweetwater Reservoir, are typically the result of erosion and sediment transport during precipitation and high flow events, and are undesirable because high turbidity may mask the presence of harmful particulates. The principal source of turbidity is general watershed runoff, and can also be contributed by other potential contaminating activities such as spills, livestock, urban runoff, wastewater, fires, some recreational activities, and algae blooms in the reservoir. It is common for turbidities to vary seasonally as a result of precipitation and flow.

Evaluation

Turbidity has been selected for evaluation not only because it is a regulated constituent, but also because it is commonly used as an indicator of general water quality and overall plant performance.

The daily turbidity log reports from the SWA provided peak daily raw water turbidity values. The peak daily raw water turbidity ranges from 0.3 to 66 NTU, with an average value of 6.2 NTU.

The daily peak raw water turbidity is presented with daily precipitation in Figure 3-2. It can be seen that although the turbidity is normally low, there are periods where levels exceed that substantially. Turbidity in the Sweetwater Reservoir follows a very predictable seasonal pattern. Lows are normally seen in the spring months, when there

Sweetwater and Loveland Reservoirs Watershed Sanitary Survey Page 3-4 First Update – Final Report SECTION 3 – SOURCE WATER QUALITY REVIEW is little precipitation, runoff, and plankton growth. The levels climb through the summer months, likely associated with increased levels of plankton in the reservoir. Most of the peak values occur during the winter months, likely associated with precipitation, local runoff, and increased flows from the Middle Sweetwater River.

Figure 3-2 Perdue WTP Raw Water Daily Maximum Turbidity and Precipitation

70 3 Raw Daily Max Precipitation 60 2.5

50 2

1.5

30 Turbidity, NTU Precipitation, inches 1 20

0.5 10

0 0

7 8 9 9 1 1 2 3 3 5 5 6 96 00 02 04 06 9 99 99 0 00 0 00 00 00 0 00 0 00 /1 /1 1 /2 2 /2 /2 /2 2 /2 2 /2 /2 /1 /1 /1/ /1 /1/ /1 /1 /1 /1/ /1 /1/ /1 /1 1 7/1/19961/1/19977/1/1991/1/1997/1/19981 7 1 7/1/20001 7/1/2001 7 1 7 1 7/1/20041 7/1/2001 7

Date

Summary of Results

• The average peak daily raw water turbidity at the Perdue WTP is around 6.2 NTU. • The turbidity levels vary throughout the year, but are very predictable with the levels increasing through the summer months and peaking during wet periods.

Sweetwater and Loveland Reservoirs Watershed Sanitary Survey Page 3-5 First Update – Final Report SECTION 3 – SOURCE WATER QUALITY REVIEW

Microbial Constituents

General Characteristics and Background

The major microbiological constituents of concern include total coliform, E. coli, Giardia lamblia, and Cryptosporidium parvum. Generally speaking, pathogenic organisms carried by mammalian species may be infectious to humans although this depends on the species of microorganism. Pathogens infecting other types of animals, such as birds and reptiles, are usually not infectious to humans. However, some types of animals, such as birds, may be vectors for human pathogens. Each of these constituents was identified for further evaluation because they are currently regulated. The presence of these constituents in the raw water governs the overall treatment requirements for the water treatment plants.

Total coliform and E. coli have been historically used to indicate the potential presence of pathogenic microorganisms in source waters, in lieu of direct measurement of pathogens. Although coliform levels have not been shown to correlate well with pathogenic microorganisms, they continue to be used as indicators due to the lack of affordable and reliable direct analytical methods for detecting pathogens. Total coliform is now considered the least useful surrogate and E.coli the most specific surrogate. Potential sources of coliform bacteria include general watershed runoff, recreation, wastewater, urban runoff, and animal populations. Coliform levels in treated water are currently regulated directly through the Total Coliform Rule, to ensure the effectiveness of the disinfection process throughout the distribution system.

Giardia lamblia is a species of the protozoa genus Giardia that infects humans and can cause the gastrointestinal disease giardiasis. Giardia is found in the environment as a cyst from the feces of humans and animals; both wild and domestic animals may be hosts. Sources close to waterbodies have the most potential to introduce viable cysts to the source water. Cysts may be destroyed naturally in the environment by desiccation and/or heat. The cysts are effectively inactivated using chlorine disinfection. The detectability of Giardia has been greatly improved with U.S. Environmental Protection Agency (USEPA) Method 1623, which is better able to establish densities, but still does not determine viability. Giardia may be carried in urban runoff and wastewater sources or may be contributed directly as a result of body-contact recreation or animal defecation. Giardia lamblia is currently regulated by the Surface Water Treatment Rule (SWTR) and the Interim Enhanced Surface Water Treatment Rule (IESWTR). Surface water supplies must provide for 3-log reduction of Giardia through physical removal and chemical inactivation. Additional reduction may be required for impaired water supplies. CDPH guidance provides that 3-log reduction is appropriate when monthly median levels of total coliform are less than 1,000 most probable number per 100 milliliters (MPN/100 mL), E. coli levels are less than 200 MPN/100 mL, or when directly measured Giardia levels are less than 0.01 cysts per liter.

Cryptosporidium parvum is a species of the protozoa genus Cryptosporidium that infects humans and can cause the gastrointestinal disease cryptosporidiosis. Cryptosporidium

Sweetwater and Loveland Reservoirs Watershed Sanitary Survey Page 3-6 First Update – Final Report SECTION 3 – SOURCE WATER QUALITY REVIEW

is found in the environment as an oocyst principally from the feces of domestic animals, although both wild and domestic animals are known to be hosts. Like Giardia, Cryptosporidium oocysts may be destroyed naturally in the environment by desiccation and/or heat. Once in the source water, however, viable oocysts are very resistant to traditional chemical inactivation using chlorine. Stronger disinfectants such as ozone or ultraviolet (UV) light are required to inactivate these pathogens. The detectability of Cryptosporidium has been greatly improved with USEPA Methods 1622 and 1623, which are able to establish true concentrations, but still do not determine viability. Cryptosporidium may be carried in urban runoff and wastewater sources or may be contributed directly as a result of body-contact recreation or animal defecation. Cryptosporidium is currently regulated through the IESWTR, which requires 2-log reduction. Well-operated conventional and direct treatment plants are granted a 2-log removal credit for Cryptosporidium if they meet all treated water turbidity limits. The CDPH also developed the Cryptosporidium Action Plan that identifies recommended turbidity limits in lieu of treated water Cryptosporidium levels. This plan was developed to help utilities optimize treatment processes to ensure maximum removal of Cryptosporidium oocysts and reduce the risk of waterborne illness. This plan is intended for utilities with over 1,000 service connections. The Long Term 2 Enhanced Surface Water Treatment Rule (LT2ESWTR) further regulates Cryptosporidium and requires additional action (treatment or protection) if the source water quality is determined to be impaired based on direct Cryptosporidium monitoring of the source, greater than 0.075 oocysts per liter.

Evaluations

Total Coliform

SWA monitored raw water for total coliform throughout the study period. Between 1996 and 2001 samples were collected daily. The method utilized from January 1996 through February 1999 was fermentation while QuantiTray was utilized from February 1999 through December 2001. Weekly samples were collected from January 2002 through December 2006, and analyzed using the membrane filtration method.

Over the study period, the total coliform levels ranged from non-detectable to greater than 2,419 most probable number per 100 milliliters (MPN/100 mL). The average total coliform is 292 MPN/100 mL and the median was 20 MPN/100 mL. A timeseries plot of coliform is provided in Figure 3-3. The plot shows clearly the use of the different analytical methods, as well as the wide range of values. Peak values can occur throughout the year and no obvious trends were identified.

Sweetwater and Loveland Reservoirs Watershed Sanitary Survey Page 3-7 First Update – Final Report SECTION 3 – SOURCE WATER QUALITY REVIEW

Figure 3-3 Perdue WTP Raw Water Total Coliform

10000

Quantitray Method

1000 Membrane Filtration Method

100

Fermentation Method Total Coliform, MPN/100 mL MPN/100 Coliform, Total 10

7 7 8 8 9 9 0 1 1 2 2 3 4 4 5 5 6 6 9 9 9 0 0 0 0 0 00 199 200 200 200 /1/200 /1/200 1/1/19967/1/19961/1/199 7/1/199 1/1/19 7/1/19 1/1/19 7/1/ 1/1/ 7/1/20001 7/1/20 1/1/20 7/1/20 1/1/20037/1/ 1/1/2 7/1/200 1 7/1/20 1/1/20 7/1/

Date

Historically, CDPH recommended using monthly median total coliform levels as a guide for increased Giardia/virus treatment requirements, with 1,000 MPN/100mL as the level for increased log reduction. Table 3-3 provides a summary of the raw water monthly median total coliform data for the Perdue WTP. Only three months had median total coliform values greater than 1,000 MPN/100 mL; March, June and November of 2001. During March and November 2001 imported water was the primary source, therefore only one month that represents Sweetwater Reservoir exceeds 1,000 MPN/100 mL.

Table 3-3 Perdue WTP Raw Water Monthly Median Total Coliform (MPN/100 mL) 199 Month 6 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 January 7 7 4 5 67 127 60 110 35 50 90 February 6 9 9 53 411 107 60 95 125 45 24 March 5 6 8 308 228 2419 95 50 70 2 40 April 4 6 7 66 171 146 150 60 40 30 2 May 4 8 6 145 133 956 115 90 100 1 6 >241 June 2 6 5 231 631 9 90 70 60 85 40 July 2 6 6 387 155 613 80 120 60 20 100 August 8 6 4 50 133 345 125 65 60 40 75 September 5 4 10 112 462 649 120 100 20 19 155 October 5 9 9 461 268 378 90 75 95 20 90 November 6 10 5 82 488 2419 175 35 70 75 45 December 9 4 2 115 211 268 180 20 20 55 45

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A review of the watershed data collected by SWA for total coliform shows that Loveland Reservoir has a median total coliform level of 205 MPN/100 mL, based on weekly sampling. The Sweetwater River at Wood Bridge is also monitored during times when water is released from Loveland Reservoir. This site has a median total coliform level of 509 MPN/100 mL, demonstrating the pickup of microbial constituents along the Middle Sweetwater River during wet periods.

Project Clean Water monitors the Middle Sweetwater River during dry weather at two sites upstream of the Sweetwater Reservoir, Steele Canyon Road and the Old Steele Bridge (Old Bridge). The Steele Canyon Road is located just upstream of Rancho San Diego and had a median total coliform value of 2,520 MPN/100 mL while the downstream site at Old Bridge, below the urban runoff, had a median total coliform value of 14,000 MPN/100 mL. This shows that during dry periods, the urban runoff discharging to the Middle Sweetwater River can contribute large amounts of microbial contaminants. The Phase II Urban Runoff Diversion System (URDS) began in June 2005 and diverts flows from the Middle Sweetwater River around the reservoir when the conductivity is greater than 1200 µohms. Since the operation of the Phase II URDS, much of the flow in the Middle Sweetwater River is diverted around the Sweetwater Reservoir and replaced with dechlorinated treated water purchased from Otay Water District.

A comparison of the weekly total coliform data collected between 2002 and May 2005 and the data collected between June 2005 and December 2006 shows a decrease in the raw water median total coliform from 70 to 45 MPN/100 mL. It is uncertain if this is part of the normal variability or attributable to minimization of flows from the Middle Sweetwater River.

E. coli

SWA monitored raw water for E. coli at the same time as total coliform throughout the study period. Between 1996 and 2001 samples were collected daily. The method utilized from January 1996 through February 1999 was fermentation while QuantiTray was utilized from February 1999 through December 2001. Weekly samples were collected from January 2002 through December 2006, and analyzed using the membrane filtration method.

Over the study period, the E. coli levels ranged from non-detectable to 1,986 MPN/100 mL. The average E. coli is 28 MPN/100 mL and the median is 8.6 MPN/100 mL. A timeseries plot of E. coli is provided in Figure 3-4. The plot shows the wide range of values. Peak values can occur throughout the year and no obvious trends were identified.

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Figure 3-4 Perdue WTP Raw Water E. coli

10000

Fermentation Method Quantitray Method Membrane Filtration Method

1000

100 E. coli,MPN/100 mL

1/2003 1/1/19967/1/19961/1/19977/1/19971/1/19987/1/19981/1/19997/1/19991/1/20007/1/20001/1/20017/1/20011/1/20027/1/20021/ 7/1/20031/1/20047/1/20041/1/20057/1/20051/1/20067/1/2006

Date

The CDPH currently recommends using monthly median fecal coliform or E. coli levels as a guide for increased Giardia/virus treatment requirements, with 200 MPN/100mL as the designated level for increased log reduction. Table 3-4 provides a summary of the raw water monthly median E. coli data for the Perdue WTP. All monthly median values were below the 200 MPN/100 mL trigger threshold.

Table 3-4 Perdue WTP Raw Water Monthly Median E. coli (MPN/100 mL) Month 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 January 30 23 7 4 7 56 30 44 12 9 28 February 17 23 23 5 35 16 49 40 13 4 11 March 11 4 2 12 4 14 54 63 3 3 3 April 95 10 4 5 7 15 99 28 2 19 2 May 4 23 7 14 45 77 80 33 26 11 7 June 2 4 7 15 32 75 48 22 30 39 20 July 2 4 4 7 7 68 65 16 6 7 43 August 2 4 4 4 4 38 75 35 4 13 32 September 4 3 2 4 3 13 48 4 6 8 27 October 11 11 2 1 5 12 42 6 14 4 16 November 17 8 6 4 6 14 183 1 9 3 10 December 50 8 4 10 51 52 95 3 8 12 10

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A review of the watershed data collected by SWA for E. coli shows that Loveland Reservoir has a median level of non-detectable, based on weekly sampling. The Sweetwater River at Wood Bridge is also monitored during times when water is released from Loveland Reservoir. This site has a median E. coli level of 14 MPN/100 mL, demonstrating that levels are still very low but that microbial constituents are picked up along the Middle Sweetwater River during wet periods.

The Project Clean Water sites, Steele Canyon Road and the Old Bridge, are monitored for fecal coliform. The Steele Canyon Road is located just upstream of Rancho San Diego and had a median fecal coliform value of 20 MPN/100 mL while the downstream site at Old Bridge, below the urban runoff, had a median fecal coliform value of 3,615 MPN/100 mL. This shows that during dry periods, urban runoff discharge to the Middle Sweetwater River can contribute large amounts of fecal contamination.

A comparison of the weekly E. coli data collected between 2002 and May 2005 and the data collected between June 2005 (Phase II URDS Inception) and December 2006 show only a slight decrease in the raw water median E. coli from 16.5 to 13 MPN/100 mL. These values are probably the same for all intents and purposes.

Giardia and Cryptosporidium

During the period of study, Giardia and Cryptosporidium data was collected for the Perdue WTP intake. The first data set was collected as part of the Information Collection Rule (ICR) between 1997 and 1998. The protozoa were analyzed utilizing the ICR Method, which is now considered a qualitative method. Under this sampling program 16 monthly samples were collected and no Giardia or Cryptosporidium was detected.

Prior to the LT2ESWTR, the SWA began collecting bi-weekly samples utilizing the newer EPA Method 1623. This method provides relatively good quantification of protozoa levels. Data was collected between October 2002 and September 2006. There was only a single Giardia cyst detected, for a maximum average of 0.0028 cysts per liter. The maximum average is the highest average within any 12 month period. The Giardia cyst was detected in March 2004 and was not associated with a wet event or releases from Loveland Reservoir. There were five Cryptosporidium oocysts detected, for a maximum average of 0.0069 oocysts per liter. The Cryptosporidium detects occurred in September 2003, July 2004, July 2005, and August 2005.

There are two facilities where body-contact recreation occurs in the Middle and Upper Sweetwater watershed, Palo Verde Lake and the Green Valley campground in Cuyamaca Rancho State Park, which are both upstream of Loveland Reservoir. As no water was released from Loveland Reservoir from March 2000 until February 2005, this eliminates body-contact recreation as a source of Cryptosporidium in the September 2003 and July 2004 detects. The source of Cryptosporidium during these time periods may have been homeless encampments, poor manure management practices from equestrian facilities along the Middle Sweetwater River, or equestrian trails in the

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watershed as discussed further in Section 4. The July and August 2005 detects may be either from homeless encampments, equestrian facilities and trails, or body-contact recreation.

In October 2006 the SWA initiated the LT2ESWTR compliance monitoring by collecting bi-weekly samples. Through the end of 2006 no Giardia or Cryptosporidium was detected.

Summary of Results

Total Coliform/E. coli

• Average coliform levels are very low in the raw water, with median values substantially lower: ¾ Total coliform averaged 292 MPN/100 mL with a median value of 20 MPN/100 mL at Perdue WTP, ¾ E. coli averaged 28 MPN/100 mL with a median value of 8.6 MPN/100 mL at Perdue WTP. • For Sweetwater Reservoir water samples (between 1996 and 2006), the monthly median total coliform value is below 1,000 MPN/100 mL at Perdue WTP in all but one month. • All monthly median E. coli values are well below 200 MPN/100 mL. • Data collected from Loveland Reservoir and along the Middle Sweetwater River show an increasing trend of coliform downstream. • Limited data for coliform show that the Phase II URDS may be contributing to overall reduction in microbial contaminant loading to the Sweetwater Reservoir.

Giardia and Cryptosporidium • There has been extensive monitoring for Giardia and Cryptosporidium in the Sweetwater Reservoir during the study period. There have been very few detects. ¾ The maximum Giardia average was 0.0028 cysts per liter. ¾ The maximum Cryptosporidium average was 0.0069 oocysts per liter. • Detectable levels of Cryptosporidium in the Sweetwater Reservoir could be related to homeless encampments, body-contact recreation, equestrian trails in the watershed, or poor manure management practices by equestrian facilities.

Disinfection By-Product Precursors

General Characteristics and Background

Disinfection By-Products (DBPs) are formed when disinfectants added to water react with naturally occurring organic matter or other constituents, such as bromide. The most common DBPs are total trihalomethanes (TTHMs), which are suspected carcinogens. Other DBPs, including haloacetic acids (HAA5), are suspected mutagens and teratogens. Potential sources of organic carbon are plant matter, animal matter, and soil, which can be contributed by general watershed runoff, urban runoff, fires,

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wastewater sources, and plankton. Bromide can be caused by erosion of natural sources.

The Stage 1 D/DBP Rule requires varying levels of total organic carbon (TOC) removal if the source water TOC concentrations exceed 2 mg/L and a utility implements conventional filtration. TOC was a selected constituent for further evaluation due to its importance in the formation of DBPs and also as a general indicator of organic contamination in water. All conventional water treatment plants have the ability to remove some TOC. Since the Sweetwater hydrologic unit was historically an inland seabed, there are large amounts of naturally occurring bromide and this was also selected for further evaluation.

Evaluations

Organic Carbon

Raw water TOC, dissolved organic carbon (DOC), and specific ultraviolet light absorbance (SUVA) data was provided for the Sweetwater Reservoir. The Sweetwater Reservoir TOC ranged from 3.4 to 8.2 mg/L with an average of 5.8 mg/L and a median of 5.7 mg/L. Figure 3-5 shows the TOC level in the Sweetwater Reservoir over the study period.

Figure 3-5 Historical TOC in the Sweetwater Reservoir

7 L

6 TOC, mg/ TOC,

3 6 7 7 8 8 9 0 1 1 2 2 3 4 4 5 5 5 6 6 9 9 9 9 9 9 0 00 0 0 0 0 0 0 0 0 0 0 0 06 9 999 000 0 004 0 00 0 0 1 /19 /19 /1997 /19 /1998 1 /1999 /2 /20 /2 /20 /2001 /20 /2002 /20 /2003 /20 /2 /2 /20 /2 /2 /20 /20 /2 8 0 1 8 1 1 9 0 1 0 1 0 1 0 1 9 0 8 0 1 8 0 1 /31/ /2 /3 /2 /3 /3 /3 /3 /3 /3 /3 /31 /3 /3 /3 /3 0 2 6/3 0 2/2 6/30/190/3 2/28/ 6/30/19 2 6 0 2/28/206 0 2/28/206/3 0 2/28/20036/3 0 2/2 6 0 2/2 6 0 2/2 6 0 1 1 1 10/3 1 1 1 1 1 1 1 Date

The plot shows that TOC does not have a distinct seasonal trend and peaks can occur throughout the year, some probably associated with erosion and some with plankton growth. There is a decreasing trend in TOC from 2001 through 2004 likely caused by the increased storage of imported water in the Sweetwater Reservoir, as shown in Table 3-5, which has an average value TOC of 2.6 mg/L. Then, in 2005 there is a

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sharp and dramatic increase in TOC. This coincides with a very wet year that resulted in significant releases from Loveland Reservoir between January and May 2005. These were the first releases since February 2000. Since the Phase II URDS was not operational at this time, all flows in the Middle Sweetwater River went into the Sweetwater Reservoir. There is no organic carbon data for Loveland Reservoir during 2005, but the Low Flow Barrier was monitored. The average TOC at the Low Flow Barrier from January through April 2005 was 9 mg/L, which is higher than the overall average from 2000 through 2006 of 6 mg/L. Intensive monitoring from February 14 to 16, 2005 averaged 11 mg/L of TOC. The conductivity was below the trigger threshold therefore all flows would have been discharged into the Sweetwater Reservoir regardless of the Phase II URDS operation.

Table 3-5 Volume of Imported Water Stored in Sweetwater Reservoir Year Imported Water Stored (Acre-Feet)_ 1996 0 1997 3,538 1998 0 1999 358 2000 551 2001 10,505 2002 7,759 2003 14,547 2004 14,674 2005 255 2006 662

DOC accounts for the majority of TOC in the Sweetwater Reservoir, with an average value of 5.7 mg/L and a median value of 5.3 mg/L. SUVA is the calculation of ultraviolet light absorbance at 254 nanometers (UVA254) divided by DOC. SUVA is a general indicator of the humic nature of carbon present in the source water. Generally speaking, water with SUVA greater than 2 liters per milligram meter (L/mg-m) are considered humic in nature. SUVA calculations for the Sweetwater Reservoir range from 1.3 to 3.0 L/mg-m, with an average value of 2.1 L/mg-m and a median value of 2.0 L/mg-m. Ninety-five percent of samples have a SUVA calculation less than 2.8 L/mg-m.

A timeseries plot of TOC, DOC, and SUVA levels in the Sweetwater Reservoir from April 2001 through December 2006 is shown in Figure 3-6. The plot shows that TOC and DOC correlate very well and follow the same trends. The plot also shows that SUVA levels were relatively constant from 2001 through 2004, with a slight seasonal trend of increasing during the winter months. The levels then increased sharply, similar to the TOC and DOC levels in early 2005. However, by early summer 2005 the SUVA levels reduced significantly to only slightly higher than historical. This indicates a reduction in the humic type of the carbon present. It is uncertain what caused these differing trends but there are three plausible scenarios. The first is that there was a significant load of non-humic carbon discharged to the Sweetwater Reservoir, either

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from Loveland Reservoir (general watershed erosion or fire induced) or picked up along the Middle Sweetwater River (general watershed erosion). Another possibility is that the organic carbon is present in the source water as plankton biomass which may not contribute to humic content measurement. A final possibility is that there are conditions in the lake which are increasingly contributing to the potential for in-lake generation by benthic flux.

Figure 3-6 Historical TOC, DOC and SUVA in the Sweetwater Reservoir

9.0 3.5 TOC DOC SUVA

8.0 3.0

7.0

2.5 6.0

TOC, mg/L 5.0 2.0 SUVA, L/mg-m SUVA,

4.0

1.5 3.0

2.0 1.0

1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 3 3 4 4 4 4 4 4 5 5 5 5 5 5 6 6 6 6 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / 0 0 0 0 0 8 0 0 0 0 0 8 0 0 0 0 0 9 0 0 0 0 0 8 0 0 0 0 0 8 0 0 0 0 3 3 3 3 3 2 3 3 3 3 3 2 3 3 3 3 3 2 3 3 3 3 3 2 3 3 3 3 3 2 3 3 3 3 / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / 4 6 8 0 2 2 4 6 8 0 2 2 4 6 8 0 2 2 4 6 8 0 2 2 4 6 8 0 2 2 4 6 8 0 1 1 1 1 1 1 1 1 1 1 1 Date

The USGS completed a report in September 2006 which assessed the potential of the levels of DOC in the Sweetwater Reservoir to be attributable to benthic flux. The study concluded that the sediment may be a significant source of DOC in the reservoir. It was estimated that benthic flux may contribute up to one-third of DOC during the study period. The flux rate is dependent on the type of bottom sediment, with the ferric chloride rich sediments associated with plant recycling water near the west end of the reservoir being most significant.

Another study was completed for the SWA in November 2000, by Ernie Wake, regarding URDS Optimization. This study identifies the Sweetwater Reservoir as slightly eutrophic, with the hypolimnion becoming anoxic during stratification. The data evaluated in the study showed an average increase in TOC between Loveland and Sweetwater reservoirs of 20 percent, but no clear cause was identified. The evaluation

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of the URDS diversion data showed that the system was effective at reducing TOC by nine percent.

Bromide

The Sweetwater hydrologic unit has been previously identified as an ancient seabed. The native soils and groundwaters have elevated levels of bromide as compared to most inland soils and waters. The Sweetwater Reservoir has high bromide levels that range from 0.23 to 0.48 mg/L, with an average value of 0.33 mg/L. Loveland Reservoir was also monitored for bromide and had significantly lower levels, ranging from 0.14 to 0.34 mg/L with an average value of 0.22 mg/L. The Sweetwater River Influent site was also sampled and had the highest values, ranging from 0.11 to 1.13 mg/L, with an average value of 0.64 mg/L. The results at this site were highest during the dry period between 2001 and 2004, indicating that urban runoff and possible groundwater upwelling may contribute bromide. Since 2005 there have been releases from Loveland Reservoir and the Phase II URDS became operational, which seem to have resulted in a significant reduction in bromide at the Sweetwater River Influent from an average value of 0.7 mg/L to 0.46 mg/L.

Summary of Results

• Organic carbon is present in the Sweetwater Reservoir at levels requiring advanced treatment. The carbon is largely present as dissolved carbon. • There is no evidence of a seasonal pattern, but organic carbon levels in the Reservoir are influenced by the source water contribution. ¾ Imported water resulted in a decrease in organic carbon in the reservoir. ¾ Releases from Loveland Reservoir and flows from the Middle Sweetwater River in early 2005 appear to have contributed significantly to the increase of organic carbon levels in the Sweetwater Reservoir. • As the URDS currently bases diversion of storm flows around the Sweetwater Reservoir on conductivity, it is unlikely that the Phase II URDS will prevent storm- related organic carbon from entering the Sweetwater Reservoir unless operational parameters are revised to address TOC also. • Organic carbon levels in Sweetwater Reservoir have been elevated since 2005 and the source is uncertain, but may be related to releases from Loveland Reservoir, pickup of natural organic debris from the Middle Sweetwater River channel as water traveled from Loveland to Sweetwater Reservoir, plankton growth, or benthic flux in the reservoir. • Bromide levels are elevated, but are likely caused by natural sources. • Releases from Loveland Reservoir in combination with operation of the Phase II URDS may result in a decreased load of bromide into the Sweetwater Reservoir.

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Volatile and Synthetic Organic Compounds

General Characteristics and Background

Most VOCs and SOCs are formulated for, or are by-products from industrial, agricultural, and urban use. VOCs and SOCs may also be contributed by leachate from landfills. Pesticides are a main subgroup of the SOCs used for agriculture and urban application. Many of these constituents have been regulated by the Phase I, II, and V regulations. VOCs and SOCs were selected as constituents for further evaluation. All conventional water treatment plants have the ability to remove some VOCs and SOCs.

Evaluation

The SWA has monitored the Sweetwater Reservoir for all regulated VOCs and SOCs as well as for some unregulated constituents. They have also monitored the Low Flow Barrier and several ambient groundwater wells in the Jamacha Valley area, near golf courses. In addition, the USGS has conducted two special studies looking at these constituents also; endocrine disrupters and the Highway 125 Baseline Study. Data for these programs was collected from the Loveland Reservoir, the Low Flow Barrier, the Sweetwater Reservoir, and raw imported water.

A review of the SWA data during the study period resulted in very few detects of organic constituents. VOC monitoring showed only low level detects (less than 1.4 µg/L) of DBPs in the Sweetwater Reservoir. SOC monitoring resulted in a few more detects in a variety of sources, as shown in Table 3-6. All levels in the surface waters are well below the respective MCLs or Notification Levels, if applicable.

Table 3-6 Summary of SOCs Detected in Sweetwater Authority Ambient Monitoring (µg/L) Constituent/Location Number of Detects Range MCL or NL Di-(2-ethylhexyl) Phthalate 4 Groundwater Wells 3 0.8 – 3.0 Sweetwater River at Wood Bridge 1 2.3 Heptachlor Epoxide 0.01 Groundwater Well 1 0.04 Simazine 4 Sweetwater River 2 0.15 – 0.27 Sweetwater Reservoir 7 0.07 – 0.24 Diazinon 6 Sweetwater River 2 0.17 – 0.3 Endosulfan II None Groundwater Well 1 0.02

There have been no detects of simazine in the Sweetwater Reservoir since February 1998. The USGS Endocrine Disrupters study analyzed for selected pesticides, wastewater compounds, and pharmaceuticals. Table 3-7 provides a summary of the pesticide data collected. It should be noted that many sample results were estimated values.

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The data show that the detectable concentrations are very low, well below the levels of human health interest, if available. The data show that Loveland Reservoir has the lowest presence of pesticides, in terms of both percent of detects and maximum values. The data also show that raw imported water may be contributing more substantially to the levels of 2,4-D and atrazine since there are more frequent detects and at higher concentrations. Diuron was the most commonly found pesticide, both in terms of percent of detects and maximum values. Table 3-7 Summary of Pesticides Detected in USGS Ambient Monitoring (µg/L) Constituent/Location Percent Samples Detect Maximum MCL or HA1 2,4-D 70 Loveland Reservoir 0 NA Low Flow Barrier 10 0.03 Sweetwater Reservoir – East End 0 NA Sweetwater Reservoir – Center 25 0.02 Sweetwater Reservoir – Pump Tower 20 0.02 Raw Imported Water 67 0.02 Atrazine 1 Loveland Reservoir 0 NA Low Flow Barrier 0 NA Sweetwater Reservoir – East End 29 0.005 Sweetwater Reservoir – Center 25 0.003 Sweetwater Reservoir – Pump Tower 27 0.003 Raw Imported Water 79 0.007 Diuron 10 Loveland Reservoir 86 0.03 Low Flow Barrier 70 0.32 Sweetwater Reservoir – East End 100 0.03 Sweetwater Reservoir – Center 100 0.05 Sweetwater Reservoir – Pump Tower 100 0.11 Raw Imported Water 100 0.21 Tebuthiuron 500 Loveland Reservoir 0 NA Low Flow Barrier 72 0.02 Sweetwater Reservoir – East End 72 0.04 Sweetwater Reservoir – Center 67 0.01 Sweetwater Reservoir – Pump Tower 50 0.01 Raw Imported Water 7 0.01 1Health Advisories for noncancer lifetime risk have been set by the USEPA for Diuron and Tebuthiuron

In addition to the low-level pesticide detects, a variety of other wastewater compounds of interest were detected including fecal indicators, pesticides, disinfectants, wood preservatives, and fire retardants. Only one has a health standard in drinking water, phenol, and the peak level of 1.4 µg/L was well below the Notification Level of 4.2 µg/L. Pharmaceuticals were detected in the raw imported water as well as the Sweetwater Reservoir and included; nicotine metabolites, anti-depressants, caffeine, anti- convulsants, and antibiotics. Since there are no standards for these constituents it is not possible to comment on the significance of their levels.

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The other USGS study is designed to collect baseline information for the Sweetwater system to compare water quality conditions before and after construction of the new Route 125. Data was collected from 1999 through 2005 and includes Loveland Reservoir, the Low Flow Barrier, Sweetwater Reservoir, and raw imported water. This data has been compiled and is provided in Appendix D. Please note that Appendix D is a compilation of detected constituents only. These data also show that detectable concentrations are very low, well below the levels of human health interest, if available. Compared to the SWA data, Loveland Reservoir had the fewest detects of VOCs and SOCs, with acetone, benzene, chloroform, chloromethane, ethylbenzene, prometon, simazine, tert-butyl-metyl-ether, toluene, and o, m and p xylenes detected. For constituents with drinking water standards or health advisories, all levels are well below the respective standard or advisory.

The Low Flow Barrier had similar detects to Loveland Reservoir, but with an increased variety of VOCs present. Benzene is not seen frequently, but toluene is frequently detected. Of particular interest are trichlorethene and cis-1,2-dichloroethylene since they are associated with the Jamacha Landfill upstream.

The Sweetwater Reservoir was positive for low-level detects of DBPs, generally less than 2 µg/L, likely contributed by the recycled washwater from the Perdue WTP. The Sweetwater Reservoir has detects of the same constituents noted upstream, including; benzene, toluene, diazinon, prometon, and simazine. All levels are well below the applicable standards or advisories.

Summary of Results

• VOC monitoring shows Sweetwater Reservoir was positive for low-level detects of DBPs, generally less than 2 µg/L, likely contributed by the recycled washwater from the Perdue WTP. • Extensive monitoring shows the low-level presence of a variety of compounds in the source waters. No constituents are present at levels near applicable standards or health advisories. • There appears to be an increasing trend of VOCs and SOCs, in both terms of frequency of presence and concentration, from upstream to downstream. • It is possible that the raw imported water is also a source of selected SOCs.

Nitrate

General Characteristics and Background

Nitrate nitrogen is a naturally occurring ion in source waters. It can also be contributed to source waters by a variety of sources, including fertilizers and wastewater. This subsection focuses on nitrate in treated drinking water as a concern for two reasons: formation of carcinogenic nitrosamines as well as induction of methemoglobinemia. Methemoglobinemia occurs when nitrate is converted to nitrite in the body and then the nitrite oxidizes hemoglobin in the blood to methemoglobin, preventing oxygen transfer.

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Typical surface waters have nitrate concentrations less than 2 mg/L as nitrogen and the primary MCL is 10 mg/L as nitrogen. Nitrate is not effectively removed through conventional filtration.

Another concern for nitrate is the potential for it being an available nutrient for plankton consumption, this is discussed further in the Plankton and Related Constituents subsection later.

Evaluation

The SWA monitors nitrate regularly at the Sweetwater Reservoir, Loveland Reservoir, the Low Flow Barrier, the Sweetwater River Influent, and the raw imported water. In addition, Project Clean Water has monitored the Sweetwater River at Steele Canyon Road and the Old Bridge during dry weather events.

The levels of nitrate in Loveland Reservoir range from non-detectable to 1.1 mg/L as nitrogen, with an average of 0.19 mg/L as nitrogen. The levels of nitrate at the Low Flow Barrier range from non-detectable to 2.4 mg/L as nitrogen, with an average of 0.18 mg/L as nitrogen. The levels in the Sweetwater River Influent range from non- detectable to 1.89 mg/L as nitrogen, with an average of 0.23 mg/L as nitrogen. The levels in the Sweetwater Reservoir range from non-detectable to 1.0 mg/L as nitrogen, with an average of 0.12 mg/L as nitrogen.

Data from the dry weather monitoring events for Project Clean Water show that the Steele Canyon Road site has an average nitrate value of 0.6 mg/L as nitrogen and the downstream site at Old Bridge has an average nitrate value of 0.97 mg/L as nitrogen.

Levels of nitrate in all source waters are low and typical of natural surface supplies. There is no obvious seasonal trend for the nitrate, but there may be a slight increase between Loveland Reservoir and the Sweetwater River Influent. This could be contributed to by urban runoff, groundwater surfacing, or by agricultural runoff from fertilizers or animal waste.

Summary of Results

• Nitrate levels in all source waters are very low, averaging less than 0.25 mg/L as nitrogen. • There may be a slight increasing trend along the Middle Sweetwater River.

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Selected Metals

General Characteristics and Background

Some metals are of concern in drinking water because of potential implications to human health, but the metals that were selected for evaluation are iron and manganese because of their aesthetic impact on water quality. Both iron and manganese are naturally occurring constituents, but can be elevated by contribution from potential contaminating activities, such as landfills, mines, and urban runoff.

There are secondary drinking water standards for iron and manganese of 300 and 50 µg/L, respectively. The taste threshold for each has been estimated to be much lower, around 100 and 30 µg/L, respectively. Also, iron and manganese can contribute to staining of laundry and household fixtures. Conventional filtration is very effective at removing both iron and manganese.

Evaluations

The SWA has monitored both constituents regularly at the Sweetwater Reservoir, Loveland Reservoir, and the Sweetwater River Influent. Compliance data is collected at least twice per year. The SWA also monitors these constituents at an increased frequency, approximately monthly, to allow for optimization of operations.

The data collected for compliance purposes is summarized in Table 3-8. It can be seen that there is a significant increase in the average concentration of both iron and manganese between Loveland Reservoir and the Sweetwater River Influent.

Table 3-8 Summary of Sweetwater Authority Iron and Manganese Monitoring (µg/L) 1996 - 2006 Site Iron Manganese Range Average 95th Range Average 95th Percentile Percentile Loveland Reservoir ND–1,010 165 639 ND-260 52 241 Sweetwater River Influent ND-870 321 778 23-630 217 544 Sweetwater Reservoir ND-830 245 550 ND-490 96 231

There were only four samples which represented times when releases were occurring from Loveland Reservoir. During the release periods, the levels of iron and manganese at the Sweetwater River Influent site were the lowest values over the study period. There are two possible causes of the increases in iron and manganese between Loveland Reservoir and the Sweetwater River Influent; Jamacha Landfill, which has elevated levels of both constituents in the leachate and monitoring wells (See Section 4) and the sand mines located between the Low Flow Barrier and the east end of the Sweetwater Reservoir.

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The data collected for operational optimization was evaluated for the Sweetwater and Loveland reservoirs. The iron and manganese levels for each reservoir were plotted against local precipitation. Figure 3-7 shows the data for Loveland Reservoir and Figure 3-8 shows the data for Sweetwater Reservoir.

Figure 3-7 Iron and Manganese with Precipitation at Loveland Reservoir

3.5 1 Rain Fe Mn

0.9 3.0 0.8

2.5 0.7

0.6 2.0

0.5

1.5 0.4 Fe and Mn, mg/L Mn, and Fe Precipitation, inches

1.0 0.3

0.2 0.5 0.1

0.0 0

7 8 8 0 0 2 3 4 4 5 96 97 9 9 99 0 01 02 0 06 9 9 0 00 00 0 1 /19 1 2 2 /2003 2 /2005 2 /1/ /1/19 /1 /1/19 /1/ /1/20 /1/ /1/20 /1/20 /1/ 5 5 5 5 5 5 5 1/1/ 5/1 5 1/1/ 5/1 5 11/1/1996 11 11/1/199 11/1/1999 11/1/200 11/1/2001 1 11/1/200 1 11/1/200 11/1/2006 Date

Figure 3-7 shows that Loveland Reservoir appears to have a relationship between manganese levels and precipitation. There was insufficient data to determine a valid correlation, but the peaks generally occurred during the wet season. This may mean that the manganese is derived from watershed erosion. Iron peaks also mostly occur during precipitation periods, but can more frequently occur during dry weather as well. It is uncertain what the cause of this is, but it may be resolubilization of the iron from sediments.

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Figure 3-8 Iron and Manganese with Precipitation at Sweetwater Reservoir

3.0

Rain Fe Mn

2.5 2.0

2.0 1.5

1.5

1.0 Fe and Mn,mg/L

Precipitation, inches Precipitation, 1.0

0.5 0.5

0.0 0.0

6 7 8 9 1 2 4 6 9 9 97 9 9 00 0 0 02 03 0 05 0 9 9 0 0 0 0 0 0 /19 /19 /1 /19 /2 /20 /2 /20 1 1 /1/1 /1 /1/1998 1 /1/2 /1/2000 /1 1 /1/2 /1/2 /1/2003 /1 /1/2004 /1/2 /1/2006 1 9/ 3/ 9 3 9 3/1/19999/ 3 9 3/1/20019 3/ 9 3 9 3 9 3 9/1/20053 9/

Date Figure 3-8 shows that Sweetwater Reservoir appears to have a similar relationship between manganese levels and precipitation. Again, there was insufficient data to determine a valid correlation, but the peaks generally occurred during the wet season. This may mean that the manganese is derived from local runoff or the Middle Sweetwater River. It is possible that during the wet season, contaminated groundwater containing iron and manganese from the Jamacha landfill are released from the alluvium. Iron peaks occur more frequently throughout the year. Since the Perdue WTP recycles its waste washwater to the reservoir, there is an iron load from the ferric solids. It is possible that this is directly contributing to the iron levels. Resolubilized from sediments when the lake stratifies and anoxic conditions form in the hypolimnion is another possible source. Peaks in the epilimnion in the fall could be related to lake destratification and mixing of the hypolimnion with the epilimnion.

Summary of Results

• The average values of iron in the Sweetwater Reservoir are approaching the secondary MCL, with individual samples exceeding it. There appears to be an increase along the Middle Sweetwater River. • The average values of manganese in the Sweetwater Reservoir are exceeding the secondary MCL. There appears to be an increase along the Middle Sweetwater River. • Iron and manganese concentrations in Sweetwater Reservoir were not compared before and after the Low Flow Barrier became operational in June 2005 due to limited data available after June 2005.

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• Two possible sources for increased iron and manganese from Loveland Reservoir to Sweetwater Reservoir, along the Middle Sweetwater River, are the Jamacha Landfill and the sand mines located at the entrance to the Sweetwater Reservoir. • Reservoir data indicates that iron is probably contributed in some part by watershed erosion. Sweetwater Reservoir is also likely impacted by Perdue WTP recycle practices. Also, lake stratification during summer months may result in an anoxic hypolimnion which could cause resolubilization of iron from lake sediments resulting in increased concentrations in the epilimnion in the fall after destratification. • Reservoir data indicates that manganese is likely contributed by watershed erosion and may be enhanced by resolubilization from the lake sediments.

Selected Minerals

General Characteristics and Background

Waters with high levels of minerals, or salts, are less palatable to consumers. These minerals are typically measured by total dissolved solids (TDS) and conductivity (EC), and one of the main components is chloride. Minerals can be caused by numerous sources including erosion of natural sources, urban runoff, and landfills. The Sweetwater hydrologic unit was historically an inland seabed so many of the soils retained naturally occurring salts.

There are secondary maximum contaminant levels for TDS, EC, and chloride. These have been developed as consumer acceptance contaminant level ranges. Each constituent has a recommended level, an upper level and a short term level. The recommended level is desirable for consumer acceptance. The upper level is acceptable if it is not reasonable or feasible to provide more suitable water. The short term level applies to existing community water systems on a temporary basis only, pending construction of treatment facilities or development of a new source. The recommended levels for TDS, EC, and chloride are 500 mg/L, 900 µohms, and 250 mg/L, respectively. The upper levels for TDS, EC, and chloride are 1,000 mg/L, 1,600 µohms, and 500 mg/L, respectively. In general, waters with TDS less than 1,200 mg/L are considered acceptable by most consumers, but most prefer levels below 650 mg/L. TDS and EC have a stable, direct relationship in most source waters. The Sweetwater sources have an assumed ratio of 0.67. For this reason, only EC and chloride are further evaluated in this section. Conventional filtration is not effective at removing minerals.

Evaluations

The SWA has monitored EC and chloride regularly at the Sweetwater Reservoir, Loveland Reservoir, and the Sweetwater River Influent. Compliance data is collected at least twice per year. The SWA also monitors these constituents at an increased frequency, approximately monthly, to allow for optimization of operations. In addition,

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the Low Flow Barrier is monitored regularly for EC for Phase II URDS system operations.

The data collected for compliance purposes is summarized in Table 3-9. It can be seen that there is a significant increase in the average concentration of both constituents between Loveland Reservoir and the Sweetwater River Influent.

Table 3-9 Summary of Sweetwater Authority Selected Mineral Monitoring 1996 - 2006 Site Conductivity (EC) – µS/cm Chloride – mg/L Range Average Range Average Loveland Reservoir 317 – 711 510 39 - 93 63 Sweetwater River Influent 551 - 2,814 1,972 77 - 528 352 Sweetwater Reservoir 676 – 1,120 926 100 - 162 130

There are several possible causes of the increases in minerals between Loveland Reservoir and the Sweetwater River Influent; Jamacha Landfill, which has elevated levels of minerals in the leachate and monitoring wells (See Section 4), urban runoff, groundwater upwelling, and the sand mines located between the Low Flow Barrier and the east end of the Sweetwater Reservoir.

Data for the Steele Canyon Road and the Old Bridges from Project Clean Water have conductivity measurements. The average concentration at the Steele Canyon Road is 1,495 µS/cm while the average concentration at the Old Bridge is 2,489 µS/cm. This is a very significant increase. Data for EC at the Low Flow Barrier has peaked at 4,200 µS/cm, with an average of 2,550 µS/cm. Only three percent of samples were less than 1,200 µS/cm. In the future, it is probable that the Phase II URDS will divert much, if not all, of this flow around the Sweetwater Reservoir.

The data collected for operational optimization was evaluated for the Sweetwater and Loveland reservoirs. The mineral levels for each reservoir were plotted against reservoir gage level. Figure 3-9 shows the data for Loveland Reservoir and Figure 3- 10 shows the data for Sweetwater Reservoir.

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Figure 3-9 Minerals with Gage Level at Loveland Reservoir

1400 700 Lake Gage COND 1380 Cl- 600 1360

1340 500

1320 400

1300

300 1280 Lake Elevation,Lake ft MSL Conductivity Chloride and 1260 200

1240 100 1220

1200 0 6 6 7 7 8 8 9 9 0 0 1 1 2 2 3 3 4 4 5 5 6 6 9 9 9 9 9 9 9 9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 9 9 9 9 9 9 9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 /1 /1 /1 /1 /1 /1 /1 /1 /2 /2 /2 /2 /2 /2 /2 /2 /2 /2 /2 /2 /2 /2 1 /1 1 /1 1 /1 1 /1 1 /1 1 /1 1 /1 1 /1 1 /1 1 /1 1 /1 / 1 / 1 / 1 / 1 / 1 / 1 / 1 / 1 / 1 / 1 / 1 5 1 5 1 5 1 5 1 5 1 5 1 5 1 5 1 5 1 5 1 5 1 Date

Figure 3-10 Minerals with Gage Level and Source Contribution at Sweetwater Reservoir

100 1400 Lake Gage COND Cl-

1200 90

1000 80

800

70 LLR Release 600

LLR

Lake Gage, feet MSL LLR LLR Release Release 60 Release Conductivity and Chloride 400 Imported Imported Stored LLR Imported Stored LLR Imported Stored 50 Release Imported Release Stored Imported Stored 200 Stored

40 0

1 97 998 006 006 2002 /1/1996 1/1998 1/2002 9 3/1/19979/1/19 3/1/1 9/ 3/1/19999/1/19993/1/20009/1/20003/1/200 9/1/20013/ 9/1/ 3/1/20039/1/20033/1/20049/1/20043/1/20059/1/20053/1/2 9/1/2 Wet Wet Wet Year Year Year Date

Figure 3-9 shows that EC and chloride trend in a similar way. For the Loveland Reservoir, there was a very significant increase in EC and chloride between 2000 and

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2005. From March 2000 to January 2005 there were no releases from Loveland, little rainfall, and it appears that the minerals concentrated in the lake as the level reduced slightly, likely due to evaporation.

Figure 3-10 also shows that EC and chloride trend together. The mineral level in Sweetwater Reservoir appears more complicated. There is a seasonal pattern to the reservoir level caused by limits on when releases can occur from Loveland Reservoir and when raw imported water is stored. Between 2000 and 2005 there was little precipitation, local runoff and no discharges from Loveland Reservoir therefore the Sweetwater Reservoir level was lower. Additionally, there was more imported water stored in the Sweetwater Reservoir from 2001 to 2004, as shown earlier in Table 3-5. These conditions, in conjunction with evaporation, appear to have increased the mineral concentration in the reservoir. When releases from Loveland Reservoir occur, there is a direct reduction in the mineral concentration of Sweetwater Reservoir.

Summary of Results

• Data for the Sweetwater Reservoir show that EC levels are slightly above the recommended levels, but within the upper levels. Chloride levels are within recommended level. • There is a significant increase in minerals between Loveland Reservoir and the Sweetwater River Influent which may be caused by; Jamacha Landfill, urban runoff, groundwater upwelling, or the sand mines located between the Low Flow Barrier and the east end of the Sweetwater Reservoir. • Only three percent of EC measurements at the Low Flow Barrier are less than 1,200 µS/cm, indicating that it is possible that much of this flow will be diverted around the Sweetwater Reservoir using the Phase II URDS. • EC and chloride concentrations in Sweetwater Reservoir were not compared before and after the Low Flow Barrier became operational in June 2005 due to limited data.

Plankton and Related Constituents

General Characteristics and Background

Plankton, including algae and cyanobacteria, can contribute to several source water quality conditions of concern. They can contribute to taste and odor impacts since their metabolites have a very low taste and odor threshold, less than 10 nanograms per liter (ng/L). A metabolite is a breakdown product of the plankton produced upon its death. Plankton biomass also assimilates carbon and contributes to levels of TOC in the source water. Finally, some plankton can contribute toxins to the drinking water that may be of concern to human health.

True algae are a group of microorganisms that may cause taste and odor problems as well as treatment challenges by clogging filters. Although cyanobacteria are called blue green algae and look and act like true algae, they are actually not algae but rather are a

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eubacteria. The cyanobacteria are typically more tolerant of changes in environmental conditions, such as heat and cold, than algae and are thus quite resilient. Cyanobacteria grow faster than algae at higher temperatures, above 25ºC. Also since many cyanobacteria, including the genus Anabaena, are nitrogen-fixing bacteria they are able to utilize gaseous nitrogen (N2) and therefore have a competitive edge over other algae when nitrate levels are low, as can occur in the Sweetwater Reservoir. This can occur when the nitrogen to phosphorus ratio is less than 10:11, rather than 16:1 for algae.

There are two primary metabolites of algae and cyanobacteria that cause taste and odor problems, geosmin and 2-methylisoborneol (MIB). Both can cause an earthy, musty odor. These can cause odors at very low levels, typically somewhere between 5 and 10 ng/L. Some of the key plankton known to produce geosmin are Actinomycetes, Oscillatoria, Sympioca, Anabaena, and Streptmyces. Some of the key plankton known to cause MIB are Actinomycetes, Oscillatoria, Phormidium, and Pseudanabaena. It should be noted that Oscillatoria can grow in both the benthic and littoral zones, but occurs primarily in the benthic zone in the Sweetwater Reservoir.

Algae and cyanobacteria both need macronutrients, including carbon, nitrogen and phosphorus, for growth as well as major micronutrients, including iron and sulfur. Most algae and cyanobacteria utilize carbon dioxide as their carbon source2, which is measured in surface water through alkalinity. Nitrogen is generally lower in surface water than groundwater and can be found in both inorganic forms (nitrate, nitrite, and ammonia) as well as organic forms (amino acids and nitrogenous bases). Phosphorus is usually lower than nitrogen in surface water and can be either suspended or dissolved in both organic and inorganic forms3. The most readily utilized form of phosphorus by algae and cyanobacteria, is phosphate. However, it should be noted that plankton can utilize bound phosphorus from other plankton biomass very readily so phosphate measurements do not provide full insight on the biomass potential. Most inland lakes are limited by their phosphorus concentration since phosphate does not naturally occur in surface waters.

Lake management and water quality conditions contribute to algae and cyanobacteria growth. Algal blooms depend on nutrients, as well as the right temperature and light conditions. Generally, blooms can occur when inorganic nitrogen levels are greater than 0.3 milligrams per liter (mg/L) and inorganic phosphorus levels are greater than 0.01 mg/L4. Another by-product of cyanobacteria is the toxins released when the cell walls are broken. Cell walls can be broken, or lysed, when the cell is damaged or killed such as when an algaecide or strong oxidant is applied to the source water. The type of toxin produced depends on the genus of bacteria present. For the Anabaena genus, the

1 Water Quality; Prevention, Identification and Management of Diffuse Pollution. Novotny and Olem. 1994. p 742. 2 Introduction to Environmental Engineering, Second Edition. Davis and Cornwell. 1991. pp. 295 – 304. 3 Ibid. pp. 300 – 301., Toxic Cyanobacteria in Water, World Health Organization, 1999, p. 234. 4 Wastewater Engineering, Third Edition. Metcalf & Eddy. 1991. pp. 1209 – 1213.

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toxins could be microcystis, anatoxins, and/or saxitoxins. These toxins are being reviewed by the USEPA for possible future regulation. The recommended treatment processes to remove these constituents include conventional filtration, granular activated carbon (GAC) filtration, and ozone. Physical removal through conventional filtration is effective at removing the bacteria and algae, but not the toxins. The effectiveness of GAC filtration is dependent on the amount of DOC in the source water, which can interfere with GAC adsorption. Ozonation is very effective at destroying toxins. The toxins have not been monitored in the Sweetwater Reservoir, but may be present based on the very high algal counts that have been recorded and the practice of in-lake management with copper sulfate.

Evaluation

The Sweetwater Reservoir exemplifies typical lake stratification in the spring with increased surface water temperatures. This stratification results in a well mixed epilimnion on the surface with an unmixed colder hypolimnion under the thermocline. General data, including turbidity and TOC as discussed previously, support the general presence of plankton and their growth periods coinciding with the lake stratification and increasing water and air temperatures, spring to late summer. Figure 3-11 shows the plankton counts and TOC in Sweetwater Reservoir.

Figure 3-11 Plankton Counts and TOC in Sweetwater Reservoir

16 9.0 Daily Count per mL TOC

14 8.0

7.0 12

6.0 10

5.0 8 4.0 TOC, mg/L TOC, 6 3.0 Plankton Counts, # per mL 4 2.0

2 1.0

0 0.0

3 3 4 5 0 0 0 04 0 06 6/ 6/ /26/03 /26/ /26/ /26/03 /26/04 /26/04 /26/ /2 /26/04 /26/05 /26/05 /26/05 /26/05 /26/ /26/06 /26/06 /26/06 /26/06 /26/06 /2 3 5 7/26/03 9 1 3 5 7/26/04 9 1 3/26/05 5 7 9 1 3 5 7 9 11 11 11 11 Date

Monitoring in the Sweetwater Reservoir has shown that there is a wide variety of algae and cyanobacteria present and likely contributing to the taste and odor problems. Some of the key plankton detected include: Anabaena flos aquae, Anabaena sporides,

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Fragilaria, Anabaena planctonica, Euglena, Asterionella, Nitzschia palea, Chlamydomonas, Anabaena circinalis, Pseudanabaena limnetica, Anabaenopsis, and Anacystis. A summary of the daily plankton counts from 2003 through 2006 is provided in Appendix B. MIB and geosmin have also been monitored in the Sweetwater Reservoir since 2005 and the data is provided in Table 3-10.

The highest levels of geosmin were seen in May 2005 and May 2006. Plankton counts during these times resulted in the highest counts of Anabaena circinalis. This is a relatively new cyanobacterium in the Sweetwater Reservoir. The highest levels of MIB were seen in October 2005. Plankton counts at this time resulted in the highest count of Pseudanabaena limnetica, also a relatively new cyanobacterium in the reservoir. During each of these periods the SWA conducted in-lake management of the plankton with applications of copper sulfate.

Chlorophyll a is a surrogate measure of overall plankton biomass. This would not represent benthic, or bottom growing, algae or cyanobacteria which can be significant in the Sweetwater Reservoir. The SWA has collected some limited data for chlorophyll a from both Loveland and Sweetwater Reservoirs. Loveland Reservoir levels ranged from non-detectable to 81 µg/L, with an average value of 7.7 µg/L. Peak levels primarily occurred during the spring months. Sweetwater Reservoir levels ranged from non- detectable to 230 µg/L, with an average value of 17.26 µg/L. Peak levels primarily occurred during the winter months. This data supports the previous determinations that Loveland Reservoir is an oligotrophic reservoir, with chlorophyll a levels generally less than 10 µg/L and that Sweetwater Reservoir is a partially eutrophic reservoir, with chlorophyll a levels between 10 and 30 µg/L. However, the peak levels of chlorophyll a in Sweetwater Reservoir during the winter months do not correspond with the most significant taste and odor episodes, which tend to occur in fall and spring. This is probably due to the change in the species growing, and specifically the presence of benthic algae or cyanobacteria, such as Oscillatoria.

Historical data and studies seem to conflict showing that during some periods, the Sweetwater Reservoir is phosphorus limited and at other times is nitrogen limited. This may be because the Sweetwater Reservoir receives approximately 50 percent raw imported water and 50 percent local water from Loveland Reservoir and runoff. A detailed evaluation of alkalinity, inorganic nitrogen compounds (ammonia, nitrate, nitrite), and phosphorus species would provide more insight on the available nutrients for plankton growth and its resultant impact on source water quality, specifically TOC levels and taste and odor impacts. Some general thoughts have been developed and are presented below on the possible causes for recent increases in plankton growth in the Sweetwater Reservoir, but this topic should be addressed more thoroughly.

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Table 3-10 Sweetwater Authority Monitoring for MIB and Geosmin In Sweetwater Reservoir Sample Date Depth (Ft) MIB (ng/L) Geosmin (ng/L) 05/17/05 3 1 160 05/17/05 8 1 230 05/17/05 18 ND 180 05/17/05 28 ND 7 05/19/05 3 ND 433 05/19/05 8 6.0 378 06/01/05 3 2.0 10 10/11/05 3 51.0 3 11/02/05 4 ND<3 ND<3 11/02/05 4 ND<3 ND<3 11/09/05 7 ND<3 ND<3 11/17/05 7 ND<3 ND<3 11/22/05 7 ND<3 ND<3 11/30/05 6.5 ND<3 ND<3 12/06/05 5 ND<3 ND<3 12/15/05 4.5 ND<3 ND<3 12/21/05 4 7.1 ND<3 12/29/05 4 ND<3 ND<3 01/09/06 4 3.5 ND<3 01/12/06 8 5.6 ND<3 01/19/06 14.8 ND<3 ND<3 01/26/06 19 12.8 ND<3 02/02/06 7 ND<3 ND<3 02/09/06 7 ND<3 ND<3 02/15/06 7 3.3 ND<3 02/22/06 7 ND<3 ND<3 03/01/06 7 ND<3 ND<3 03/09/06 7 ND<3 ND<3 03/16/06 7 ND<3 ND<3 03/23/06 7 2 ND<3 03/29/06 7 ND<3 ND<3 04/07/06 7 ND<3 ND<3 04/11/06 7 ND<3 5 04/20/06 7 40 33 04/28/06 7 ND<3 22

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Table 3-10 Cont’d Sweetwater Authority Monitoring for MIB and Geosmin In Sweetwater Reservoir Sample Date Depth (Ft) MIB (ng/L) Geosmin (ng/L) 05/03/06 7.5 42 18 05/10/06 7.5 4 8 05/17/06 7.5 8 ND<3 05/24/06 6.6 ND<3 24 05/31/06 8 ND<3 24 06/07/06 5 ND<3 ND<3 06/15/06 5 ND<3 ND<3 06/21/06 5 ND<3 ND<3 06/27/06 5 8 ND<3 06/29/06 5 4 3 07/05/06 5 4 3 07/12/06 5 5 ND<3 07/19/06 13 7 4 07/27/06 12 5 ND<3 08/02/06 11 6 ND<3 08/09/06 11 4 4 08/17/06 11 8 3 08/24/06 9 4 ND<3 08/30/06 8 5 5 09/06/06 7 14 ND<3 09/14/06 6 12 ND<3 09/20/06 6 10 3 09/28/06 5 ND<3 ND<3 10/05/06 4.5 ND<3 ND<3 10/12/06 8 ND<3 ND<3 10/20/06 8 ND<3 ND<3 10/27/06 7 ND<3 ND<3 11/02/06 6 ND<3 ND<3 11/09/06 6 ND<3 ND<3 11/14/06 6 ND<3 ND<3 11/30/06 6 ND<3 ND<3 12/07/06 6 ND<3 ND<3 12/14/06 6 ND<3 ND<3 12/21/06 6 ND<3 ND<3 12/28/06 6 ND<3 4 01/04/07 6 ND<3 4 01/10/07 6.5 ND<3 3 01/22/07 6 4.1 ND<3 02/01/07 6 ND<3 ND<3 02/08/07 6 3.2 ND<3

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A plot of alkalinity in Loveland and Sweetwater reservoirs was generated over the study period to assess possible changes and increases in available carbon sources, see Figure 3-12.

Figure 3-12 Alkalinity in Loveland and Sweetwater Reservoirs

250

LLR SWR

200

150

Alkalinity, mg/L Alkalinity, 100

6 8 0 3 5 96 9 97 9 98 99 00 0 01 02 0 04 0 06 2/99 2/03 /2/05 1/2/ 7/2/ 1/2/97 7/2/ 1/2/ 7/2/ 1/2/ 7/ 1/2/ 7/2/ 1/2/01 7/2/ 1/2/02 7/2/ 1/2/ 7/ 1/2/ 7/2/04 1 7/2/ 1/2/06 7/2/

Date

This figure shows that there was a significant increase in alkalinity in Loveland Reservoir beginning in 2002 and continuing until early 2005. The cause is uncertain, but could be related to runoff from the Viejas Fire in 2001 and the Cedar Fire in 2003 which could cause an increase in the amount of other bases contributing to total alkalinity, such as phosphates, silicates, and borates. The decrease in alkalinity in early 2005 at Loveland Reservoir coincides with releases from the reservoir to Sweetwater Reservoir. The release from Loveland Reservoir resulted in a decreased volume of the higher alkalinity water. Local rains also occurred during that period, providing low alkalinity water which further resulted in a decrease of alkalinity in Loveland Reservoir. There was a commensurate increase in alkalinity in Sweetwater Reservoir subsequent to the Loveland releases in February, April, May, and June 2005.

Nutrient data, specifically inorganic nitrogen (such as ammonia, nitrate, and nitrite) and phosphorus, has been collected by the SWA from the Loveland Reservoir, the Low Flow Barrier, and the Sweetwater Reservoir. Also, Project Clean Water has monitored the Steele Canyon Road and the Old Bridges during dry weather for ammonia, nitrate, and phosphate.

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Nitrite is generally non-detectable in the surface waters so total inorganic nitrogen (TIN) is assumed to be equal to the sum of ammonia and nitrate for the purpose of this discussion.

Loveland Reservoir was monitored both at the surface and below the thermocline for both constituents. The average TIN below the thermocline was 0.21 mg/L. Although this is low, it is substantially higher than the average TIN at the surface, 0.06 mg/L. Based on the limited data, the TIN levels below the thermocline appear to peak during the spring and fall, possibly associated with lake stratification and the levels of TIN in the surface appear to peak in the winter months, possibly associated with lake overturn. The Low Flow Barrier had a similar average level of TIN to the Loveland Reservoir hypolimnion, at 0.21 mg/L.

The Sweetwater Reservoir has a similar pattern to Loveland Reservoir, with the average TIN below the thermocline at 0.45 mg/L and the average TIN at the surface was 0.14 mg/L. Based on the limited data, the TIN levels below the thermocline appear to peak during the late summer and early fall, possibly associated with lake stratification and development of anoxic conditions and the levels of TIN in the surface appear to peak in the fall months, possibly associated with lake overturn. Data for Project Clean Water show that urban runoff, and possibly golf courses in the vicinity, provides inorganic nitrogen, with an average TIN of 0.77 mg/L at the Steele Canyon Road and an average TIN of 1.3 mg/L downstream at the Old Bridge.

Although phosphate phosphorus is the most readily available for plankton uptake, it is possible for plankton to utilize bound phosphorus from other plankton for biomass growth. Therefore, total phosphorus is also important in determining the overall potential for plankton biomass.

For the Loveland Reservoir, the average total phosphorus below the thermocline was 0.09 mg/L, which is substantially higher than the average total phosphorus at the surface, 0.02 mg/L. Ortho-phosphorus accounted for about half of the total phosphorus below the thermocline, but for all of the phosphorus at the surface. Based on the limited data, the total phosphorus levels below the thermocline appear to peak during the spring and fall, possibly associated with lake stratification and the levels of total phosphorus in the surface appear to peak in the winter months, possibly associated with lake overturn. The Low Flow Barrier had a similar average level of total phosphorus to the Loveland Reservoir hypolimnion, at 0.11 mg/L. Ortho-phosphorus accounted for less than 10 percent of total phosphorus.

The Sweetwater Reservoir has the same pattern as Loveland Reservoir, with the average total phosphorus below the thermocline at 0.2 mg/L and the average total phosphorus at the surface was 0.06 mg/L. Ortho-phosphorus accounted for about 75 percent of the total phosphorus below the thermocline, but was generally non- detectable at the surface. Based on the limited data, the total phosphorus levels below the thermocline appear to peak during the late summer and early fall, possibly associated with lake stratification and development of anoxic conditions and the levels

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of total phosphorus in the surface appear to peak in the fall months, possibly associated with lake overturn. Data for Project Clean Water show that urban runoff provides detectable phosphate, with an average phosphate of 0.02 mg/L at the Steele Canyon Road and an average of 0.13 mg/L downstream at the Old Bridge.

Summary of Results

• Plankton are clearly present in the Sweetwater Reservoir and have a direct impact on source water quality, including turbidity and TOC. • The types of plankton present include algae and cyanobacteria. These result in the detection of the metabolites geosmin and MIB in the Sweetwater Reservoir and can cause significant taste and odor episodes. The cyanobacteria may also contribute to cyanotoxins in the treated water. • The highest levels of geosmin were seen in May 2005 and May 2006, and were related to the presence of Anabaena circinalis. • The highest levels of MIB were seen in October 2005, and were related to the presence of Pseudanabaena limnetica. • The SWA conducts in-lake management of the plankton with applications of copper sulfate. Plankton are only managed during times when there are significant taste and odor impacts. When necessary, the SWA also applies free chlorine across the filters to additionally combat taste and odor. • Although chlorophyll a is a good surrogate measure of plankton biomass, the peak levels do not correspond to major taste and odor episodes in the drinking water. • Historical data and studies seem to conflict showing that during some periods, the Sweetwater Reservoir is phosphorus limited and at other times is nitrogen limited. This may be related to the difference in water quality between the various sources feeding the reservoir. • TIN is generally very low in the source waters. The reservoirs show that the levels are higher in the hypolimnion than at the surface. Levels may be related to lake stratification/destratification, algal uptake in the epilimnion, algal settling and death in the hypolimnion, and release from the sediments when the hypoliminion is anoxic. Urban runoff appears to contribute to TIN as well. • Total phosphorus is similar to TIN, with higher levels in the reservoir hypolimnions than at the surfaces. Ortho-phosphorus is significant in the hypolimnions, but nearly non-detectable at the reservoir surfaces. Again, levels may be related to the lake stratification/destratification, algal uptake in the epilimnion, algal settling and death in the hypolimnion, and release from the sediments when the hypoliminion is anoxic. Urban runoff also appears to be a significant source of ortho-phosphorus. • It is recommended to increase monitoring frequency from weekly to daily for plankton analysis in order to detect the occurrence of plankton blooms in the Sweetwater Reservoir as early as possible.

Arsenic

General Characteristics and Background

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Arsenic is a metal, naturally found in soils and rock formations as well as possibly contributed by urban runoff and landfills. Arsenic is a carcinogen and has a MCL of 10 µg/L. It is possible that this MCL could be reduced in the future by CDPH. Conventional water treatment plants have the ability to remove some arsenic.

Evaluation

During the period of study, the SWA monitored for arsenic at Loveland Reservoir, the Sweetwater River Influent, and the Sweetwater Reservoir. The peak level at Loveland Reservoir was 2 µg/L, with a non-detectable average value. The peak level at the Sweetwater River Influent was 8 µg/L, with an average value of 4 µg/L. There is limited data at this site and conclusions should be drawn cautiously. The peak level at the Sweetwater Reservoir was 3 µg/L, with an average value of 1 µg/L.

Summary of Results

• All values are below the new federal MCL and the Sweetwater Reservoir data are low enough to probably not be impacted by a potentially reduced CDHS MCL. • It appears that there may be an increase along the Middle Sweetwater River, but this is based on very limited data at the Sweetwater River Influent site and should be verified.

Hexavalent Chromium

General Characteristics and Background

Chromium is a metal, naturally found in soils and rock formations. It is also used in various industrial processes. It occurs primarily in two valence states – trivalent (Cr+3) and hexavalent (Cr+6). Trivalent chromium is non-toxic. Hexavalent chromium can cause liver and kidney damage.

Speciation of chromium is believed to be affected by disinfection processes; most chromium in treated drinking water is in the hexavalent state. Hexavalent chromium is currently regulated under the 50 µg/L MCL for total chromium. CDPH is developing a state MCL for hexavalent chromium. Conventional water treatment plants are not specifically designed to remove hexavalent chromium, although the processes may remove incidental amounts.

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Evaluation

Sweetwater and Loveland Reservoirs Watershed Sanitary Survey Page 3-37 First Update – Final Report 52 Flinn Springs Source Water Quality Monitoring Locations RAILS2006 Watershed Survey Sanitary 1. Sweetwater Reservoir - Intake Tower PARK 2. Sweetwater Reservoir - Minimum Pool - Center 67 8 Alpine 3. Sweetwater Reservoir - Minimum Pool - East End Harbison Canyon 4. SweetwaterGILLESPIE Reservoir FIELD - East End 5. Sweetwater River Influent Bostonia Fletcher Hills Crest Palo Verde 6. Low Flow Barrier Lake 7. Old Steel Bridge (Highway 94) San Carlos8. Steele Canyon Road (Cottonwood Golf Course) 9. Wood Bridge (Sloan Canyon Road) EL CAJON Loveland Reservoir LA10. MESA Loveland Reservoir Dehesa 10 SYCUAN (! INDIAN RESERVATION Upper Basin (! 125 9

Mt. Helix r e Riv ter twa ee w S Casa de Oro 8 (!

Source Water QualityMonitoringLocations Jamacha Rancho San Diego (!7 EMON Spring Valley 6 Middle Basin Jamul Figure 3-1 (! ROVE La Presa 4 (! 5 (! 94 3 1 2(! µ (! (! 54 0120.5 Miles ise Hills Sweetwater Reservoir

WEETWATER COUNTY SECTION 4 – WATERSHED CONTAMINANT SOURCES REVIEW

This section contains an evaluation of the nine potential contaminant sources selected for review for the First Update. Nine potential contaminating activities (PCAs) were selected for review as part of the First Update: (1) spills, (2) landfills, (3) recreation, (4) urban runoff, (5) wastewater, (6) proposed highways and other developments, (7) homeless encampments, (8) agriculture, and (9) fires. These PCAs were selected based on their presence in the watershed and their potential to impact Sweetwater River water quality. PCAs deemed insignificant from the 1995 Watershed Sanitary Survey were seawater intrusion, logging, and geological hazards.

SPILLS

Background

A hazardous material spill or leak into a surface water body could occur as the result of a vehicular traffic accident, pipeline leak or spill, wastewater treatment plant spill, or other incident. In the event of a leak or spill, timely notification is critical to ensure that the water treatment plant operators are provided with sufficient time and information to best respond to potential treatment concerns.

Spills of raw or partially treated wastewater occur from collection systems and from wastewater treatment plants. A sanitary sewer overflow (SSO) is any overflow, spill, release, discharge, or diversion of untreated or partially treated wastewater from a sanitary sewer system. Major causes of SSOs include grease, root and debris blockages; sewer line flood damage; manhole structure failures; vandalism; pump station mechanical failures; power outages; excessive storm or groundwater inflow/infiltration; improper construction; lack of proper operation and maintenance; insufficient capacity; and contractor-caused damage. Spills of raw or partially treated wastewater occur due to equipment malfunctions or operator errors at wastewater treatment plants. Spills also occur during storm events when stormwater infiltrates a wastewater collection system and the capacity of the wastewater treatment plant is exceeded.

Seasonal Patterns

For the Upper and Middle Sweetwater watersheds, there are no seasonal patterns as to when spills may occur. SSOs may occur more frequently during the wet season, when stormwater can infiltrate a wastewater collection system.

Related Constituents

The most common spills are related to oil and petroleum products or sewage. Therefore, typical constituents of concern range from volatile organic compounds (VOCs) and hydrocarbons to microbial constituents (i.e. viruses, pathogens, Giardia, Cryptosporidium). However, hazardous materials emergencies can involve a virtually infinite number of chemicals or chemical combinations.

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Occurrence in Watershed

The main transportation routes through the watershed are California State Highway Routes 54, 79, 94, and Interstate Highway 8.

There were 11 SSOs listed in the Regional Water Quality Control Board San Diego Region’s (Regional Board) SSO database, and 25 spills listed in the State Office of Emergency Services (OES) Hazardous Materials Release database (2006 spill information not posted yet on website) from 1996 to 2005. Overall, there were 18 spills involving sewage and 18 spills involving chemicals, primarily petroleum products. Table 4-1 lists the number of SSOs as reported to the Regional Board, and Table 4-2 lists the spill incidents reported to OES.

Although SSOs did occur in the Middle Sweetwater watershed, the majority of SSOs occurred in the Lower Sweetwater watershed and will not be discussed in this report. The largest SSO involving raw sewage occurred in July 1996 when 2,250 gallons entered a dry tributary stream near State Route 94 and Via Mercado in the Middle Sweetwater watershed.

Many of the spills reported to the OES did not specify whether the spill impacted a receiving water, and it is difficult to assess impacts to source water quality without this information. Out of the number of spills that were noted to have impacted a receiving water, the largest spill was when 5,000 gallons of chlorinated treated wastewater effluent from the Descanso Detention Facility entered a storm drain.

Sweetwater Authority (SWA) normally receives notification of sewage-related spills directly from both the Otay Water District and the San Diego County Department of Public Works. In regard to hazardous material spills, the San Miguel Fire District confirmed that the SWA is on their call list, and that SWA would be notified of any event that may impact SWA’s facilities.

Additionally, when new developments that will handle hazardous materials occur in the watershed, SWA requests direct notification in the event of a surface spill or a chemical storage tank leak on the premises. If the facility requires a Hazardous Materials Business Plan and/or an emergency response plan, SWA requests that the documents include the SWA’s 24-hour emergency telephone numbers.

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Table 4-1 Summary of Sanitary Sewer Overflow Incidents, 1996-2006

Discharger Spill Date Spill Type of Cause of Spill Volume Receiving Location Spill (gallons) Water Otay Water 7/23/96 Hwy 94 Raw Debris Blockage 2,250 Dry tributary District 1000’ west Sewage stream to of Via Sweetwater Mercado River County of 7/4/97 604 Raw Debris Blockage 300 Sweetwater San Diego Galapago Sewage River St, Spring Valley Otay Water 7/28/98 3900 Raw Sewer Line Break 900 Tributary District Avocado sewage stream to Blvd., Sweetwater Spring River Valley Otay Water 11/7/99 South of Raw Debris Blockage 1,800 Tributary District Paseo Sewage stream to Salamoner Sweetwater River Otay Water 3/8/2001 Forcemain Chlorinated Corrosion 900 Sweetwater District easement ¼ Tertiary River mi south of Effluent plant Otay Water 5/2/2001 Forcemain Chlorinated Corrosion 750 Sweetwater District easement Tertiary River 1/3 mi south Effluent of plant County of 3/16/2002 9734 Raw Debris Blockage 800 None San Diego Campo Sewage Road, Spring Valley Otay Water 5/8/2003 1513 Raw Debris Blockage 1,800 Earthen District Fairvalley Sewage Stream Rd, El Cajon Otay Water 6/14/2003 Fury at Raw Debris Blockage 2,200 Earthen District Calle Verde, Sewage Stream La Mesa County of 2/21/05 5682 Raw Heavy 100 Sweetwater San Diego Sweetwater, Sewage Rainfall/Infiltration River Bonita County of 1/14/2006 5710 Raw Unknown 900 None San Diego Sweetwater Sewage Source: San Diego Regional Water Quality Control Board website

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Table 4-2 Summary of Spills Occurring in Sweetwater Watershed as reported to OES,1996-2005

Spill Date Spill Location Type of Spill Cause of Spill Volume Receiving Water 6/19/1996 Near Miller Ranch Rd Motor Oil Illegal Dumping 25 gals Unknown and State Route 94 10/19/2000 11204 Explorer Mineral Oil Traffic Accident 3 gals Storm Drain Road, Rancho San Diego 1/5/2002 Japatul Rd., near Oil Illegal Dumping 6 gals None Alpine 1/7/2002 Omega St. at Paint Traffic Accident 63 gals Unknown Jamacha Blvd, near Lemon Grove 3/27/2002 2165 Arnold Way, Hydrochloric Acid Container 1 gal Unknown Alpine tipped by citizen 4/29/2002 Stallion Oaks Rd, Transmission Fluid Neighbor 40 gal None near Dehesa Valley buried Rd transmission fluid 5/30/2002 2903 Jamacha, El Diesel Substance 2 gal None Cajon found outside dispenser 7/17/2002 Hwy 94 east of Vista Dimethylamine Traffic accident Unknown Unknown Sage, near Jamul 8/22/2002 2903 Jamacha Rd, El Gasoline Leaky nozzle at 1 gal None Cajon dispenser 9/4/2002 Stone Canyon Sewage Root blockage 1,000 gal Unknown northwest of of sewer line Sweetwater 9/12/2002 678 Jamacha Rd, El Gasoline Gas Tank 30 gal Unknown Cajon Failure 9/21/2002 9603 Campo Rd, Sewage Unknown Unknown Unknown named Spring Valley drainage ditch 10/3/2002 Arnold Way Peutz Sewage Contractor Unknown Undetermined Valley Rd, Alpine drilled through force main 12/10/2002 8810 La Mar St. Sewage Sewer Main Unknown Unknown Spring Valley Plugged 1/8/2003 EB I-8 East of Diesel Tractor Trailer 20 gal Unknown Willows Road Overturned 2/24/2003 415 Ramona Ave, Sewage Backup at 300 gal None Spring Valley residence 3/24/2003 El Cajon Diesel Fuel Truck 40 gal Unknown 9/13/2003 1020 Gillespe St., Sewage Blockage in 1,800 gal Unknown Spring Valley Sewer Line 12/14/2003 9550 Jamacha Blvd, Transformer Oil Transformer 10 gal No Spring Valley Box hit by Vehicle 1/15/2004 Detention Facility at Chlorinated Pipeline Break 5,000 gal Storm Drain 787 Campbell Ranch Treated wastewater in Force Main Road plant effluent

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Table 4-2 Cont’d. Summary of Spills Occurring in Sweetwater Watershed as reported to OES,1996-2005

5/8/2004 100 Lakeview, Spring Ferrous Chloride Fitting broke on 200 lbs. Drain in Valley Chemical Feed Containment Pump goes to Sweetwater Reservoir 6/4/2004 100 Lakeview, Spring Sodium Chloride Spill 400 gal Storm Drain Valley 4/26/2005 State Route 94 at Diesel Traffic Accident 70 gal No WOF 8/25/2005 1036 Gillispie Dr. Oil Unknown 100 gal Second San Spring Valley Diego Aqueduct 9/16/2005 EB I-8 west of Tavern Fuel Fuel Leak 100 gal No Rd Source: State Office of Emergency Services

Related Water Quality Issues and Data Review

There were no VOCs or synthetic organic compounds (SOCs) detected above the detection limit for reporting purposes (DLR) in the source water to the Perdue WTP over the reporting period. Daily and weekly E. coli data at the Sweetwater Reservoir were examined to evaluate if any impacts from sewage spills occurred. Although Figure 4-1 shows spikes in the E. coli data occurring over 500 MPN/100mL, only one of the 18 sewage spills may be associated with the increases in E. coli levels. This SSO occurred on December 10, 2002, and E. coli levels were generally elevated from the end of November 2002 to the end of December 2002. Therefore, the SSO is not likely to be the sole cause of elevated E. coli levels in December 2002. Rain occurred on November 29, 2002 and December 16, 17, 19, and 20, 2002 as measured at the Sweetwater Reservoir.

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Figure 4-1 E. coli Historical Sweetwater Raw Daily Data, 1996-2006

2600

2400

2200

2000

1800

1600

100 mL 1400

1200

1000 E. coli, MPN/ coli, E. 800

600

400

200

7 8 8 0 1 3 3 6 6 9 9 9 0 0 01 0 0 04 0 0 9 9 9 0 0 0 0 0 0 0 0 /1 /2 /2002 /2 /2 /2005 /2 /2 /1/1996 /1 /1/1997 /1/1999 /1 /1/2000 /1 /1 1 7/1/19961 7 1/1/1 7/1/1 1 7/1/19991 7 1/1/2 7/1/2 1 7/1/20021/1 7/1 1/1/20047/1/2 1 7/1/20051/1 7/1

Date

Regulation and Management

When a hazardous materials spill or leak of a reportable quantity occurs, notification to an emergency response agency is required by state and federal law. A sewage spill is required to be reported if 1,000 gallons or more are released. An oil or petroleum product spill is required to be reported if 42 gallons or more are released. Any other hazardous materials spill is required to be reported if there is a reasonable belief that the release poses a significant present or potential hazard to human health and safety, property, or the environment. When a hazardous materials spill or leak occurs, it is the owner’s or operator’s responsibility to notify the local designated emergency response agency, which is called the Certified Unified Program Agency (CUPA), as well as the OES.

For the Upper and Middle Sweetwater watersheds, the local CUPA is the San Diego County Department of Environmental Health, Hazardous Materials Division. Depending on the type of spill and where it occurred, other agencies such as the U.S. Forest Service, the U.S. Fish and Wildlife Service, the California Department of Fish and Game, and the Regional Board may be involved. An incident report would then be sent to OES.

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OES developed the Response Information Management System (RIMS) as part of the development of the State’s Standardized Emergency Management System (SEMS). The purpose of RIMS is to provide a single point for tracking the status and progress of hazardous materials spills statewide. Only registered users can input data into RIMS, but anyone can access the website to review current or archived OES cases. The current cases, including those from 2005 to the present, can be accessed at: http://rimsinland.oes.ca.gov/operational/malhaz.nsf/$defaultview

The archived cases, including those from 1993 through 2004, can be accessed at: http://rimsinland.oes.ca.gov/rims.nsf/RIMS%20Archive%20Databases?OpenPage

To provide a consistent, statewide regulatory approach to address SSOs, the State Water Board adopted Statewide General Waste Discharge Requirements (WDRs) for Sanitary Sewer Systems, Water Quality Order No. 2006-03 (Sanitary Sewer Order) on May 2, 2006. The Sanitary Sewer Order requires public agencies that own or operate sanitary sewer systems to develop and implement sewer system management plans (SSMPs) and report all SSOs to the State Water Board’s online SSO database.

The Sanitary Sewer Order requires the owners and operators of sanitary sewer systems to take all feasible steps to eliminate SSOs and to develop and implement a system- specific SSMP. SSMPs must include provisions to provide proper operation and maintenance while considering risk management and cost. The SSMP must contain a spill response plan that establishes standard procedures for immediate response to an SSO in a manner designed to minimize water quality impacts and potential nuisance conditions. The SSMPs must be updated every five years.

Since 1996, the San Diego Regional Board has regulated sewage collection agencies under Order No. 96-04. Order No. 96-04 goes beyond the State Board Order by prohibiting all sewage spills, unlike the State Board Order that only prohibits those sewage spills that either reach surface water or cause a nuisance condition. In addition, Order No. 96-04 requires notification within 24 hours of all sewage spills equal to or greater than 1,000 gallons, whereas the State Board Order allows up to three days.

Order No. 96-04 has provided strong incentive for collection agencies to implement effective spill prevention measures and has resulted in a dramatic decrease in the number and magnitude of sewage spills in the San Diego region. For example, the number of sewage overflows has dropped from more than 427 reported in 2003 to 201 in 2006.

Order No. 96-04 requires that each discharger develop and implement a Sanitary Sewer Overflow Prevention Plan (SSOPP) and a Sanitary Sewer Overflow Response Plan (SSORP). The SSOPP shall be designed to prevent, or minimize the potential for SSOs. The SSORP shall establish procedures for responding to SSOs so as to (1) minimize the sewer overflow volume which enters surface waters, and (2) minimize the adverse effects of SSOs on water quality and beneficial uses.

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The Regional Board is currently considering adoption of an order that will augment State Water Board Order No. 2006-0003-DWQ and supersede current Order No. 96-04.

In order to deliver wastewater safely and prevent SSOs, an aggressive preventive maintenance program is followed by the County of San Diego’s Department of Public Works Field Operations Section. Crews are assigned to perform regular cleaning and inspection of lines by using high pressure water cleaners, sewer rodding vehicles, vacuum trucks and pipeline video equipment. A computer database schedules, tracks, and alerts the staff of recurring problem areas.

Source Water Protection Activities

There are no source water protection activities recommended at this time.

Summary of Findings for Spills

• There were 36 spills in the Upper and Middle Sweetwater watersheds over the reporting period; 18 spills involved hazardous chemicals, primarily petroleum products, and 18 spills involved sewage.

• Overall, there were no large spills in the watershed.

• SWA receives notification from both Otay Water District and the San Diego County Department of Public Works for sewage-related spills, and from the San Miguel Fire District for hazardous materials spills which may impact SWA’s facilities.

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LANDFILLS

Background

Landfill leachate can be a source of pollution to groundwater and surface water sources. The U.S. Environmental Protection Agency (USEPA) estimates that there are approximately 55,000 landfills in the United States with over 75 percent of them polluting groundwaters at this time. Although modern landfills are lined, the liners may eventually fail, allowing leachate to contaminate groundwaters. Also, many older landfills were not installed with liners.

Seasonal Patterns

There are no seasonal patterns associated with when leachate from a landfill will contaminate groundwater. During the rainy season, leachate may be released from an unlined or failed lined landfill when moisture seeps through the cover and percolates through the landfill waste.

Related Constituents

Common contaminants in municipal landfill leachate are total dissolved solids, hardness, alkalinity, chloride, sulfate, iron, manganese, and hydrogen sulfide. In addition, this group includes a variety of non-differentiated organics measured as COD (chemical oxygen demand), BOD (biochemical oxygen demand), and TOC (total organic carbon). Non-conventional contaminants are largely organic chemicals that have not been defined and whose potential hazards to public health and groundwater quality are not known. Typically the organic Priority Pollutants, those organics that are identified and quantified, represent a very small fraction of the total organic matter present in leachate as measured by chemical oxygen demand and total organic carbon. It is estimated that from 90 to 95 percent of the organic materials in municipal landfill leachate are of unknown composition (G. Fred Lee, 1993). Those chemicals have not been identified, and their potential impacts on public health and groundwater quality are unknown.

Occurrence in Watershed

There are two landfills within the Upper and Middle Sweetwater watershed, the Viejas landfill and the Jamacha landfill.

Viejas Landfill

The Viejas landfill is an inactive Class III municipal solid waste landfill, which accepted an estimated 50,000 tons of residential waste, commercial refuse, and non- decomposable inert solids during its operation from 1971 to 1979. The Sweetwater River is located approximately 1,500 feet northwest of the site. Groundwater flow is

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generally northwesterly (GeoSyntec, 2006). The landfill is located in the Upper Sweetwater watershed, as shown in Figure 4-2.

The Viejas landfill was constructed without a liner and does not have a leachate collection or removal system. A landfill gas extraction system has not been installed since the volume of waste is not sufficient to support a system (GeoSyntec, 2006). The final soil cover is approximately three feet thick.

After the landfill was closed, a transfer station was built which is currently in operation. The transfer station is open to the public to accept household waste. Additionally, waste is condensed into larger trucks at the transfer station for final disposal at another landfill.

Jamacha Landfill

The Jamacha landfill is an inactive Class III municipal solid waste landfill which accepted an estimated 1.8 million tons of residential waste, commercial refuse, and non-decomposable inert solids during its operation from 1960 to 1978. No known sewage sludge or septic tank materials were received at the site. The Sweetwater River is located approximately 700 feet southeast of the site. Groundwater flow is generally southeasterly (GeoSyntec, 2006). The landfill is located in the Middle Sweetwater watershed, as shown in Figure 4-2.

The Jamacha landfill was constructed without a liner and does not have a leachate collection or removal system. A landfill gas extraction system consisting of an extraction well field and a flare have been operational since June 1996. This system was upgraded in May 2001 with seven additional gas extraction wells. The interim soil cover consists of two feet of clean soil.

Related Water Quality Issues and Data Review

Viejas Landfill

The Viejas landfill currently has six groundwater monitoring wells which are monitored semi-annually, as shown in Figure 4-3. One is installed upgradient of the refuse (VIGW-3), three are installed downgradient of the refuse (ITVI-1, ITVI-2, and ITVI-4), and two are cross-gradient of the refuse (ITVI-3 and ITVI-5). Three private off-site domestic water wells are located downgradient of the site at the Descanso Detention Facility and are regularly sampled on a voluntary basis.

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Figure 4-3 Groundwater Monitoring Wells and Groundwater Flow Direction at Viejas Landfill

Source: GeoSyntec Consultants

The site is monitored for VOCs, chloride, nitrate as N, total dissolved solids (TDS), pH, antimony, arsenic, barium, beryllium, cadmium, chromium, colbalt, copper, iron, manganese, mercury, nickel, selenium, silver, thallium, vanadium, zinc, calcium, magnesium, potassium, sodium, sulfate, bicarbonate, carbonate, and chemical oxygen demand.

The 2005 annual monitoring report contains historical groundwater quality monitoring results from 1990 to the present. Benzene, cis-1,2-dichloroethene, and thallium have been detected at levels above their respective MCLs (benzene MCL = 1 µg/L, cis-1,2- dichloroethene MCL = 6 µg/L, thallium MCL =0.002 mg/L) in various wells, as shown in Figures 4-4 through 4-6. However, thallium and cis-1,2 dichloroethene have not been detected in Loveland Reservoir. Benzene has been detected at Loveland at low levels, below the DLR, ranging from 0.008 to 0.01 µg/L.

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Figure 4-4 Levels of Benzene in Groundwater – Viejas Landfill

Source: GeoSyntec Consultants Figure 4-5 Levels of Cis-1,2-dichloroethene in Groundwater – Viejas Landfill

Source: GeoSyntec Consultants

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Figure 4-6 Levels of Thallium in Groundwater – Viejas Landfill

Source: GeoSyntec Consultants

Jamacha Landfill

The Jamacha landfill currently has 16 groundwater monitoring wells and 14 piezometers that are monitored semi-annually, as shown in Figure 4-7. Table 4-3 shows that some of the wells are screened in fractured bedrock, and some are screened in alluvium/grus. Recent alluvial sand and gravel form relatively thin deposits which overlay the granitic bedrock, the predominant lithologic unit at the site (GeoSyntec, September 2006). The site is monitored for the same suite of constituents as the Viejas landfill, discussed above.

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Table 4-3 Description of Wells at Jamacha Landfill

Well Name Description JAGW-1 Downgradient alluvium/Shallow bedrock well JAGW-5 Downgradient alluvium/Shallow bedrock well JAGW-7 Upgradient alluvium/Shallow bedrock JAGW-8A Background bedrock well JAGW-8B Background alluvium well JAGW-9A Downgradient shallow bedrock JAGW-9B Downgradient alluvium JAGW-9E Downgradient deep bedrock JAGW-10 Downgradient alluvium JAGW-10A Downgradient shallow bedrock JAGW-10D Downgradient intermediate bedrock JAGW-10E Downgradient deep bedrock JAGW-12A Downgradient shallow bedrock JAGW-12B Downgradient alluvium JAGW-13A Piezometer cross-river deep bedrock JAGW-13B Piezometer cross-river alluvium JAGW-14A Piezometer cross-river deep bedrock JAGW-14B Piezometer cross-river alluvium JAGW-15A Downgradient deep bedrock JAGW-15B Downgradient shallow bedrock Source: Report of Waste Discharge and Corrective Action Plan. GeoSyntec 2006

The 1995 Watershed Sanitary Survey identified a vertical constriction of the alluvial soil at a point downstream of the Otay Water District’s water reclamation plant. The presence of this vertical constriction forces the water to the surface; otherwise, it would flow in the alluvium. Due to this vertical constriction, contamination of the alluvium from the Jamacha landfill may have a pathway to reach the Sweetwater River.

Table 4-4 shows VOC data collected during the first quarter 2006 monitoring event from the downgradient wells, where bolded values exceed the MCL. The VOCs of greatest concern are tetrachloroethene (PCE), trichloroethene (TCE), cis-1,2-dichloroethene, 1- 4, dichlorobenzene, and vinyl chloride. Benzene, 1,1-chloroethane, 1,2-dichloroethane were also detected in downgradient wells above their respective MCLs.

Data collected by the U.S. Geologic Survey (USGS) indicate that trichloroethene and cis-1,2-dichloroethene have been detected consistently at low levels at the SWA’s Low Flow Barrier, as shown in Appendix D and discussed in Section 3.

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Table 4-4 VOCs Detected in First Quarter 2006 Monitoring at Jamacha Landfill

Source: GeoSyntec 2006 Report

Based on water quality data in the 2005 annual monitoring report (Figures 4-8 through 4-12), other constituents are of concern to SWA because they are found at levels above their respective secondary maximum contaminant levels (MCLs). For example, chloride is well above the secondary standard of 250 mg/L in six downgradient monitoring wells, with three of the six wells above 1,000 mg/L. TDS ranges from 2,000 to 4,000 mg/L in six downgradient wells, well above the secondary MCL range of 500 to 1,000 mg/L. There are also many wells that are above the water quality protection standard (WQPS) for chloride and TDS. (A water quality protection standard is a concentration that statistically represents an impact to groundwater; it is a calculated concentration which is site specific and dependent on background water quality at the site.)

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Figure 4-8 Levels of Chloride in Groundwater – Jamacha Landfill

Source: GeoSyntec 2006 Report Figure 4-9 Levels of Total Dissolved Solids in Groundwater – Jamacha Landfill

Source: GeoSyntec 2006 Report

In addition to TDS and chloride, historical monitoring data shows elevated levels of iron, manganese and arsenic in select monitoring wells. Although the WQPS is rarely exceeded for iron, levels present in downgradient wells JAGW-9A, 12A and 11 are

Sweetwater and Loveland Reservoirs Watershed Sanitary Survey Page 4-16 First Update – Final Report SECTION 4 – WATERSHED CONTAMINANT SOURCES REVIEW considered elevated for drinking water. It is difficult to determine if the elevated iron and manganese present in monitoring wells are naturally occurring, or if they are due to the landfill. Wells JAGW-9A and JAGW-12A are shallow bedrock wells. It could be that naturally occurring iron present in the bedrock is being mobilized by the acidic nature of landfill leachate. As shown in Figure 4-10, iron generally ranges from 0.5 to 3 mg/L in downgradient wells JAGW- 9A, 12A and 11. Iron levels in upgradient well JAGW-7 ranges from 0.5 to 1.5 mg/L, which is lower than the downgradient wells, indicating a possible impact from the landfill.

Figure 4-10 Levels of Iron in Groundwater – Jamacha Landfill

Source: GeoSyntec 2006 Report

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As shown in Figure 4-11, manganese is elevated in downgradient wells JAGW-1, 9A, 11, and 12A and 12B, compared to upgradient well JAGW-7. The WQPS is also exceeded in downgradient wells JAGW-1, 9A, 11, and 12B. Based on this information, manganese is present in both alluvial and bedrock wells. Again, it is difficult to determine if the elevated manganese present in downgradient monitoring wells is naturally occurring or due to the landfill.

Figure 4-11 Levels of Manganese in Groundwater – Jamacha Landfill

Source: GeoSyntec 2006 Report Figure 4-12 Levels of Arsenic in Groundwater – Jamacha Landfill

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Source: GeoSyntec 2006 Report

Figure 4-12 shows arsenic was detected in various wells sporadically above the new Federal MCL (10 µg/L) and the WQPS over the monitoring period.

Cleanup and Abatement Order 99-42 identified chloride and TDS as constituents of concern (COCs) at the Jamacha landfill site because detected concentrations exceeded water quality objectives of the Basin Plan (800 mg/L for chloride and 3,500 mg/L for TDS in groundwater). Chlorinated VOCs, including 1,4-dichlorobenzene, cis-1,2- dichloroethene, methylene chloride, tetrachloroethene, trichloroethene, and vinyl chloride, are the other COCs identified for the site.

As part of the Cleanup and Abatement Order 99-42, the County of San Diego initiated a Phase II Evaluation Monitoring Program (EMP). A Phase II EMP was implemented to complete the site characterization, assess potential impacts to human health and the environment, and evaluate corrective action alternatives to mitigate potential impacts. The following is a summary of the monitoring performed for the Phase II EMP:

Surface Water Sampling

In June 2000, surface water samples were collected at three locations: 1) upstream of the landfill at Steele Canyon Bridge (JR-1), 2) ¼ mile downstream of the bridge (JR-2), and 3) southeast of monitoring wells JAGW-9A and JAGW-9B (JR-3). No VOCs were detected in the samples. As shown in Table 4-5, chloride and TDS were highest in the most downstream sample, although levels upgradient of the landfill already exceed the Basin Plan water quality objectives for surface water.

Table 4-5 Surface Water Samples Collected from Sweetwater River – Phase II EMP for Jamacha Landfill

Parameter Basin Plan Upstream – Downstream – Downstream – Water Quality JR-1 JR-2 JR-3 Objectives for Surface Water Chloride, mg/L 250 408 408 491 TDS, mg/L 500 1,780 1,770 1,940 Source: GeoSyntec Phase II Evaluation Monitoring Program Jamacha Landfill

Passive Soil-Gas Survey

A passive soil-gas survey was conducted to provide additional data to assess preferential pathways for constituent migration. Passive soil-gas surveys are a means of evaluating the relative presence of VOCs in shallow soil and groundwater without having to collect a groundwater sample. Fifty-four modules were buried between two and three feet below ground surface directly downgradient from the toe of the landfill.

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PCE was detected in 35 modules with concentrations decreasing with distance from the landfill toe. TCE was detected in 11 modules.

Temporary Groundwater Sample Points

Temporary groundwater sample points were installed in October and November 1999. Shallow groundwater testing results in the temporary groundwater sample points drilled on the river bank generally contained VOCs at concentrations consistent with existing monitoring wells. Temporary groundwater sample points in the riverbed contained no detectable VOCs. The September 2006 Report of Waste Discharge states, “constituents from the landfill are diluted by flow from the Sweetwater River and the watershed on the other side of the river. These mechanisms prohibit the migration of any landfill constituent across the Sweetwater River.”(GeoSyntec 2006) Therefore, although groundwater has been impacted by the landfill, the report concluded that the Sweetwater River is not impacted.

It should be noted that samples were collected only once for the surface water and once for the temporary groundwater sampling points. Based on the presence of the vertical constriction of the alluvium soil downstream of the landfill, it seems that sampling would be warranted at this site if accessible. Additionally, sampling should take into account the time periods when releases from Loveland occur, as well as wet and dry years, to determine impacts to the Sweetwater River under these scenarios.

Based on the additional data collected by the Phase II EMP, an enhanced in-situ bioremediation pilot study was initiated in September 2004 using a microbial culture. Prior to injection of the culture, an electron donor (emulsified vegetable oil) was injected in the test area. After injection of the culture, groundwater samples were collected from the injection wells and from downgradient monitor wells. The results of the pilot study concluded that bioaugmentation is a feasible remedial alternative for remediation of chlorinated ethenes in fractured bedrock. The full-scale bioremediation project was initiated in March 2007, and results are expected within six months of operation. It should be noted that the bioremediation will not remove TDS, chloride, arsenic, iron, or manganese.

Regulation and Management

The County of San Diego Department of Public Works, Landfill Management Unit manages and maintains the Jamacha and Viejas landfill sites. Although these sites no longer accept solid waste, there are many maintenance issues required to keep them environmentally safe. The County monitors landfill gas, groundwater quality, and maintains the sites to insure the proper flow of surface waters.

The Viejas landfill is regulated by the Regional Water Quality Control Board San Diego Region under Order 95-24 and by Addendum No. 1 to Order 95-24.

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The Jamacha landfill is regulated by the Regional Water Quality Control Board San Diego Region under Order 94-164 and Cleanup and Abatement Order 99-42.

Source Water Protection Activities

Viejas Landfill

• Annual reports submitted by the County of San Diego Department of Public Works should be reviewed periodically to keep track of VOCs and heavy metals in the downgradient wells. Benzene, cis-1,2-dichloroethene and thallium are of particular concern. If levels continue to be of concern, the Regional Board should be contacted.

Jamacha Landfill

• Annual reports submitted by the County of San Diego Department of Public Works should be reviewed periodically to keep track of VOCs, TDS, chloride, iron, manganese, and arsenic in the downgradient wells. If levels continue to be of concern, the Regional Board should be contacted.

• Additional monitoring of iron and manganese should be conducted by the SWA to investigate impacts from landfill and to possibly capture peaks in the data. When releases from Loveland Reservoir occur, iron, manganese, and arsenic should be sampled on a weekly basis at Loveland Reservoir, Old Bridge, Low Flow Barrier, and the Sweetwater River Influent.

Summary of Findings for Landfills

Viejas Landfill

• Benzene, cis-1,2-dichloroethene, and thallium have been detected at levels above their respective MCLs in various wells cross or downgradient of the Viejas landfill. Therefore, Loveland Reservoir could be potentially impacted by the Viejas landfill. However, thallium and cis-1,2 dichloroethene have not been detected in Loveland Reservoir. Benzene has been detected at low levels, below the drinking water DLR, ranging from 0.008 to 0.01 µg/L.

• The SWA should implement the source water protection activities recommended above.

Jamacha Landfill

• A number of VOCs have been detected at levels above their respective MCLs, particularly PCE, TCE, cis-1,2-dichloroethene, 1-4, dichlorobenzene, and vinyl

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chloride. Benzene, 1,1-chloroethane, 1,2-dichloroethane were also detected in downgradient wells above their respective MCLs.

• Historical monitoring data shows elevated levels of iron, manganese, arsenic, TDS, and chloride in select monitoring wells. It is difficult to determine if the elevated levels in monitoring wells are naturally occurring, or due to the landfill.

• A full-scale in-situ bioremediation project was initiated in March 2007, and results are expected within six months of operation. The in-situ bioremediation is designated to address the VOC contamination at the site, but will not address iron, manganese, arsenic, TDS, or chloride.

• The SWA should implement the source water protection activities recommended above.

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RECREATION

Background

Recreational uses in the Sweetwater and Loveland watershed consist primarily of camping, picnicking, hiking, fishing, mountain biking, equestrian trails, and waterplay. Body contact recreation and boating are not allowed in either Sweetwater or Loveland Reservoirs. However, waterplay in the Sweetwater River occurs at the Green Valley campground in Cuyamaca Rancho State Park, as the river flows directly through the campground. Body contact also occurs at the Palo Verde Reservoir, which is upstream of Loveland Reservoir. Three golf courses in the watershed will be covered in the Proposed Highways and Other Developments section. Equestrian trails will be covered in the Agriculture section.

Seasonal Patterns

All of the recreational uses occur year-round, although camping and waterplay occur primarily from Memorial Day to Labor Day weekend.

Related Constituents

Body contact recreation in general has long been known to be a source of pathogen contamination, resulting partly from personal sanitary conduct and partly from a natural shedding process. Pathogens shed by recreationalists include bacteria, viruses, and protozoa. Moreover, because their origin is human, microorganisms shed by recreationalists are transmittable to other humans.

Occurrence in Watershed

Loveland Reservoir

The Loveland Reservoir is open every day of the year,and no fees are required except a fishing license. Peak attendance is typically 50 to 60 people per day. This occurs on weekends in the spring. Using attendance data from April 2005 to March 2007, the average number of angelers per year is 4,691, and the number of non-fishing visitors is 517 per year. Recreational uses primarily consist of fishing and hiking, as boating and body contact recreation is not allowed in Loveland Reservoir. In order to better control recreational activities at Loveland Reservoir, the SWA exchanged land near Descanso for land surrounding the Loveland Reservoir with the U.S. Forest Service in December 1997.

Immediately after the land exchange, SWA expanded the 0.25 mile shoreline fishing area to five miles (as shown in Figure 4-13), constructed a new parking lot and trail leading to the reservoir, and also installed trash receptables and six portable toilets for

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recreators. No sanitation facilities were available previously. The portable toilets are located above the high water line.

Sweetwater Reservoir

Recreational uses at the Sweetwater Reservoir include fishing, hiking, and bird watching. The southern shore of the Sweetwater Reservoir became open to the public for fishing in 2004, with the opening of the Sweetwater Fishing Facility which has 2.5 miles of shoreline fishing.

The Sweetwater Fishing Facility trails are open to the public on weekends and Mondays. A fishing license is required, as well as a day-use fee. Using attendance data from April 2005 to March 2007, the average number of angelers per year is 4,037 and the number of non-fishing visitors is 420 per year.

Portions of the Sweetwater watershed are also included in a network of trails used for horseback riding, mountain biking, and hiking. The 5.5-mile Sweetwater Reservoir Riding and Hiking Trail, on the south side of the reservoir is a County of San Diego trail operated through an easement granted by the SWA. The trail is open every day, and requires no fee. According to SWA, the trails are not maintained for removal of equestrian waste (Personal communication, Steve Parker, SWA). There are no connections from the Fishing Program area to the Riding and Hiking Trail.

Twenty portable toilets located above the high water line serve the Sweetwater Fishing Facility. There are no restroom facilities located on the trail.

In December 2006, the County of San Diego applied to the California Department of Public Health (CDPH) for an amendment to the SWA’s water supply permit to allow a multi-use hiking, biking, and equestrian trail within the Sweetwater Reservoir property along the northern perimeter of the reservoir. If approved, this would allow for a 14.1- mile loop trail around the reservoir. The trail will be set-back at least 100 feet from the Sweetwater Reservoir’s high water line, and runoff from the trails will be designed to drain toward the SWA’s Urban Runoff Diversion System (URDS). Prior to entering the URDS, the runoff will be treated by a gravel gutter and vegetated buffer strip. Please refer to the Urban Runoff Section for further information on the URDS system.

The project also proposes to locate five spill-proof, easily maintained manure management stations along the 1.02-mile segment of the trail owned by the SWA (Trail Segment 8). Pet waste bags will be made available, and signage along Trail Segment 8 will be posted requiring pet owners to pick up after their pet or horse. In addition, horse manure will be removed from the trail on a weekly basis by County personnel for Trail Segment 8 only.

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Cuyamaca Rancho State Park

The Cuyamaca Rancho State Park has one campground located within the Upper Sweetwater Watershed, the Green Valley Campground. The Green Valley campground is maintained by the California State Parks and has 81 campsites. State Park staff estimate that there are over 30 individual septic systems throughout the park. There are also two recreational vehicle (RV) dump stations. There have been no problems of surfacing sewage from the septic systems.

The Sweetwater River flows through the Green Valley campground, and there is a day use area offering shallow pools and cascades. This area is popular for waterplay during the summer.

Annual visitation to the Cuyamaca Rancho State Park and campgrounds is estimated to be 122,000.

Cleveland National Forest

The Cleveland National Forest has no recreational facilities within the watershed.

Palo Verde Lake

The Palo Verde Lake is a 50-acre privately owned lake located in Alpine just upstream of the Loveland Reservoir. It is owned and managed by the Palo Verde Ranch Home Owner’s Association. The primary recreational uses are swimming and fishing, and only electric motor boats and row boats are allowed.. The lake is not used for drinking water.

Estimated attendance during summer weekends is approximately 100 people per day (Personal communication, Ed Wortley, Palo Verde Lake).

The Palo Verde Lake installs weir boards from April to October 31 to keep the water level stable for recreation. The weir boards are taken out from October 31 to April 1, allowing water to flow freely downstream to Loveland Reservoir. Copper sulfate is applied periodically to control algae, and SWA is notified of each application.

Private Campgrounds

Oakzanita Springs Park is a privately-owned RV campground located just outside the southern boundary of the Cuyamaca Rancho State Park along Highway 79. Oakzanita Springs Park consists of 63 sewered RV spaces, 67 unsewered RV spaces, 20 tent campsites, public restrooms with showers, laundry facilities and a swimming pool.

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Ma-Tar-Awa RV Camper Park owned by the Viejas Indian Tribe has camping as well as long-term RV usage. There are 85 full hook-up sites, and 65 to 70 sites are permanently occupied.

The Alpine Springs RV Park is also owned by the Viejas Indian Tribe and has 22 overnight RV camping sites and 90 permanent RV sites.

The Swallows Sun Island Club is a privately-owned nudist resort located in Harbison Canyon. There are 11 motel rooms, 10 tent sites, 20 RV spaces, 50 manufactured home sites, three public restrooms with showers, a laundry, a swimming pool, and a restaurant.

Related Water Quality Issues and Data Review

Although waterplay does occur in the Upper watershed at the Green Valley campground and the Palo Verde Reservoir, which are both upstream of the Loveland Reservoir, there have been very few detects of Cryptosporidium or Giardia in the Sweetwater Reservoir. Samples collected from October 2002 to September 2006 show 1 Giardia cyst and 5 Cryptosporidium oocysts detected over this time span of nearly four years. The Cryptosporidium detects occurred in September 2003, July 2004, July 2005, and August 2005.

As no water was released from Loveland Reservoir from March 2000 until February 2005, this eliminates body-contact recreation occurring in the Upper watershed as a source of Cryptosporidium in the September 2003 and July 2004 detects. The July and August 2005 detects may be related to recreation.

E. coli monthly medians at Sweetwater Reservoir show no correlation (Table 3-4) with increased concentrations during the summer months, when peak body-contact recreation occurs.

The waste discharge requirements (WDRs) for Cuyamaca Rancho State Park require monitoring for pH, phenols, and zinc at the dump station septic tanks. This is because RV waste contains preservatives which may inhibit degradation of sludge and scum in the septic tanks. This data is not relevant for this report.

Regulation and Management

SWA manages recreation at the Sweetwater and Loveland Reservoirs. The portable toilets at Sweetwater and Loveland Reservoirs are checked daily and pumped weekly.

Regular patrols of the Sweetwater and Loveland Reservoirs are conducted on a daily basis. Occasionally, there is evidence of fence cutting and illegal dumping. Fortunately, illegal dumping does not appear to have impacted reservoir water quality.

The Sweetwater Reservoir Riding and Hiking Trail has the following trail rules:

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• Please stay on the trail and rest areas only. Trespassing on reservoir lands, adjoining property, or structures is strictly prohibited.

• Pack out what you pack in. Remove all items brought onto the trail and cleanup after horses and pets.

• Hunting or fishing on trail and reservoir areas is prohibited.

• Respect nature and all signs, fences and facilities along the trail. Do not damage or deface any items.

• Keep vehicles out of the area.

• Hitch at designated posts only.

• Restrain or leash all pets. Do not allow animals to run loose.

• License all horses and dogs brought onto the trail.

• Trail closes at dusk.

• No smoking.

• Contaminating a drinking water supply is against the federal law.

Septic systems managed by the Cuyamaca Rancho State Park are regulated by the Regional Water Quality Control Board, San Diego Region under WDR Order No. 94- 114. An annual report is submitted every year to the Regional Board. The annual report must describe the steps taken to ensure protection of groundwater quality from RV holding tanks wastes. Order No. 94-114 also states that any discharge of treated or untreated wastewater resulting from sewage line breaks or surfacing wastes in the leach fields must be reported to the Regional Board within 24 hours.

Septic systems for the Oakzanita Springs Park and the Swallows Sun Island Club are regulated by the Regional Board as well. Please refer to the Wastewater section for further information.

Source Water Protection Activities

As discussed above, the SWA manages recreation at Loveland Reservoir, as well as the Fishing Facility at Sweetwater Reservoir. Regular patrols of both reservoirs are also conducted.

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Summary of Findings for Recreation

• Recreational uses in the Sweetwater and Loveland watershed consist primarily of camping, picnicking, hiking, fishing, mountain biking, equestrian trails, and waterplay. Waterplay occurs at the Green Valley campground in Cuyamaca Rancho State Park and at Palo Verde Lake. Both of these sites are upstream of Loveland Reservoir.

• Body-contact and boating are not allowed at Loveland and Sweetwater Reservoirs. Recreation activities are shoreline fishing, hiking, bird watching, and equestrian trails.

• The SWA manages fishing at both Loveland and Sweetwater Reservoir, which is new from the 1995 Watershed Sanitary Survey. Regular patrols of both reservoirs are conducted.

• Although body-contact recreation occurs in the Upper watershed, this may not continually impact the Sweetwater Reservoir because releases from the Loveland Reservoir do not occur every year. Cryptosporidium and Giardia are rarely detected in the Sweetwater Reservoir. Similarly, monthly median data for E. coli show no increases during the summer months when peak body-contact occurs.

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URBAN RUNOFF

Background

Urban runoff (URO) is a concern in the Upper and Middle Sweetwater watershed as there are developing urbanized areas in the watershed, particularly the communities of Rancho San Diego and Spring Valley.

Seasonal Patterns

URO occurs on a year-round basis and includes wet and dry weather discharges. Wet weather runoff results from seasonal storms. Wet weather runoff is of relatively short duration and can have highly variable pollutant concentrations. Because of the high degree of imperviousness, urban areas generally generate higher per acre volumes of runoff than undeveloped or agricultural lands. Dry weather runoff results from activities such as lawn irrigation and car washing.

Related Constituents

Data on urban runoff discharges indicate that the runoff is turbid, a source of TOC, a source of bacteria, a source of nutrients, and a source of other constituents such as pesticides and organic compounds. Generally, the impact is greater during the wet season, immediately following a first-flush event.

Occurrence in Watershed

As there are no incorporated cities within the Upper and Middle Sweetwater watershed, all of the unincorporated communities are regulated through the County of San Diego. The County of San Diego is the lead permittee for a Phase I Municipal National Pollutant Discharge Elimination System (NPDES) Stormwater Permit (Order No. R9- 2007-0001 NPDES No. CAS 0108758). Please see the Regulation and Management section below for further details. The only other Phase I Municipal NPDES stormwater permit holder in the watershed is the CalTrans Descanso Maintenance Facility.

The State Water Resources Control Board’s California Integrated Water Quality System Project database was queried and within Region 9 (San Diego), there are six facilities in the Middle and Upper watershed which are covered under the State Water Resources Control Board General Industrial Activities Storm Water Permit, as shown in Table 4-6. Facilities covered under the General Construction Activity Storm Water Permit were researched but not compiled as the facility sites are constantly changing.

Table 4-6 also contains information about the compliance history of each of the industrial sites. Generally, the sites are in compliance or have incurred minor violations related to monitoring or reporting.

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Table 4-6 Facilities Covered Under General Industrial Activities Storm Water Permit Facility Name Address City Violation History San Diego County 11900 Singer Lane Spring Valley None Jamacha Landfill Otay Water Ralph W 11901 Singer Lane Spring Valley None Chapman Water San Diego Paper Box 10605 Jamacha Blvd Spring Valley None Co. Southwest Fabricator 2500 Sweetwater Spring Valley None Springs Blvd. Custom Powder 3552 Fowler Canyon Jamul Late Monitoring Finishing Road San Diego County 7850 Campbell Ranch Alpine None Viejas Landfill Road

Order No. R9-2007-0001 NPDES No. CAS 0108758 also requires permittees to identify and prioritize industrial, commercial, construction, and municipal sites that have the potential to discharge pollutants to the Municipal Separate Storm Sewer System (MS4), whether they are permitted or not. Since the County of San Diego is the only permittee within the Upper and Middle Sweetwater watershed, the following data was compiled from the County of San Diego (San Diego Stormwater Copermittees, 2007).

During fiscal year 2005 to 2006, the County of San Diego identified 35 municipal facilities, eight industrial sites, and numerous commercial facilities and construction sites which have the potential to discharge pollutants to the MS4 system within the Sweetwater watershed (San Diego Stormwater Copermittees, 2007). Generally, the County inspects municipal sites, high priority industrial sites, and commercial sites on an annual basis. (Personal Communication, Jon Van Rhyn, County of San Diego Dept. of Public Works)

Municipal Sources

The County of San Diego owns and operates a wide assortment of facilities ranging from general office buildings to sewage treatment plants and closed landfills. During fiscal year 2005 to 2006, the County of San Diego identified 35 municipal sites within the Sweetwater watershed which have the potential to discharge pollutants to the MS4 system, as shown in Tables 4-7 through Tables 4-9 (San Diego Stormwater Co- Permittees, 2007). The majority of the high priority sites are wastewater pump stations and closed landfills which are covered in the Wastewater and Landfill sections of this report.

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Table 4-7 High Priority Municipal Sites within Sweetwater Watershed

Wastewater Facility Name Address City Spring Valley Operations 11937 Campo Rd. Spring Valley Center Descanso Water Pollution 7878 Campbell Ranch Rd. Alpine Control Facility Harbison Canyon Pump 8770 Harbison Canyon Alpine Station Jamacha Pump Station 9903 Jamacha Blvd. Spring Valley Steele Canyon Pump Station 11971 Singer Lane Spring Valley Ramona Avenue Pump 411 Ramona Ave. Spring Valley Station Vista Del Lago Pump Station 9041 Camino Largo Vista Spring Valley Landfills Facility Name Address City Former Descanso Landfill Japatul Valley Road Alpine (clean closed) Jamacha Landfill (inactive) 11900 Singer Lane Spring Valley Viejas Landfill (inactive) 7850 Campbell Ranch Rd. Alpine Viejas Bin Transfer 7850 Campbell Ranch Rd. Alpine Roads (Corporate yards, Excess Right of Way, MS4s) Facility Name Address City Corte Madera Pit APN 408-081-06 Descanso Monte Vista Borrow Pit 11970 Singer Lane Spring Valley Road Maint. Station #28 – Div 11970 Singer Lane Spring Valley I HQ Spring Valley Road Maint. Station #17 2910 Tavern Rd. Alpine Alpine Road Maint. Station #22 24592 Viejas Grade Rd. Descanso Descanso Excess Right of Way Lyons Lyons Valley Rd. Jamacha Valley Road Jamacha Garage (Fleet) 11970 Singer Lane Spring Valley Parks Facility Name Address City Eucalyptus 9125 Edgewood Drive Spring Valley Hilton Head (Cottonwood 3) 16005 Hilton Head Rd. El Cajon Old Ironsides 326 Harbison Canyon Rd. El Cajon Sweetwater Regional 4370 Sweetwater Rd. Bonita Park/Summit

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Table 4-8 Medium Priority Municipal Sites within Sweetwater Watershed

Jails, Libraries, Parks, Vacant Land Facility Address City Camp Barrett – Probation 21077 Lyons Valley Rd. Alpine Descanso Detention Facility 7878 Campbell Ranch Rd. Alpine Rancho San Diego Library 11555 Via Rancho San Diego El Cajon Spring Valley Library and 836 Kempton Street Spring Valley Teen Center Bahde Donation to Animal Harbison Canyon Rd. El Cajon Control Goodland Acres 8848 Troy St. Spring Valley

Table 4-9 Low Priority Municipal Sites within Sweetwater Watershed Parks Facility Address City Bancroft 3554 James Circle Spring Valley Del Parque 10502 Via Del Parque Spring Valley Estrella Drive 9810 Sierra Madre Rd. Spring Valley Nancy Jane 120 North Park Dr. El Cajon South Lane 218 South Lane El Cajon Windriver (Cottonwood 1) 2139 Windriver Rd. El Cajon Woodhaven (Cottonwood 2) 1995 Donahue Dr. El Cajon

Industrial Sources

As shown earlier in Table 4-6, there are six industrial sites which are regulated under the General Industrial Permit. However, the County of San Diego has identified an additional eight high priority industrial sites, which are not regulated directly by the Regional Board, but are inspected by the County, as shown in Table 4-10. All industrial sites are shown in Figure 4-14.

Table 4-10 High Priority Industrial Sites within Sweetwater Watershed (excluding sites covered by General Industrial Permit

Facility Address City Hanson Aggregates 2266 Willow Glen Dr. El Cajon Dixieline Lumber 3607 Avocado La Mesa Action Marketing 2513 Folex Way Spring Valley S & S Carbide 2830 Via Orange Way Spring Valley Euramaco Safety 2746 Via Orange Way Spring Valley Jaycraft 2780 Via Orange Way Spring Valley Dehesa School District 4612 Dehesa Rd. El Cajon Repco Sales 2737 Via Orange Way Spring Valley

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Commercial Sources

The majority of the commercial facilities identified as having the potential to discharge pollutants to the MS4 system are related to automobile repair, eating and drinking establishments, nurseries and greenhouses, painting and coating businesses, carpet and furniture cleaning, and landscape businesses. Due to the sheer number of sites, the total number of commercial facilities within the Sweetwater watershed was not tabulated. Commercial facilities of particular interest within the Sweetwater watershed are equestrian facilities and golf courses. Please see the Proposed Highways and Other Developments section for further information on golf courses and the section on Agriculture for equestrian facilities.

Construction Sources

Due to the number of sites, the total number of construction sites within the Sweetwater watershed was not tabulated.

Related Water Quality Issues and Data Review

Although Project Clean Water monitors stormwater runoff in the Sweetwater watershed, the monitoring location is located in Bonita, downstream of the Sweetwater Reservoir at the Plaza Bonita Road Bridge. Therefore, the data collected at this site does not represent urban runoff quality from the Upper and Middle watersheds.

Beginning in 2002, dry weather monitoring has been conducted by the County of San Diego at 25 locations within the Sweetwater watershed. Many of the sites are between Loveland and Sweetwater Reservoir. Monitoring site SWT12 is located on the Sweetwater River at the Old Steele Bridge (Old Bridge). Table 4-11 shows a summary of the dry weather monitoring results collected at site SWT12 since 2002. Monitoring results show high mineral content in the dry weather flows, as well as high total and fecal coliform and occasionally high levels of nutrients, particularly phosphorus. Copper and zinc were detected in a few samples.

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Table 4-11 Dry Weather Monitoring Results at Site SWT12 (Sweetwater River at the Old Bridge)

6/11/03 7/16/03 9/17/035/5/04 7/12/04 5/17/05 8/3/05 5/1/06 9/28/06 Field Measurements Flow, cfs 1.62 1.05 0.624 1.32 0.85 28.08 0.93 4.32 .408 Conductivity, µS/cm 2930 2570 2820 2810 2820 680 2550 2550 2670 Turbidity, NTU 7 2 4 6 0 2 33 14 8 Dissolved Oxygen, mg/L 4.84 3.85 5.31 4.34 7.82 7.34 5.29 5.54 5.65 Temperature, ºC 17.2 19.1 19 17.7 19.7 18.6 19.4 18.3 18 NH3-N, mg/L 0.3 0.7 0.3 0.3 0.4 0.2 0.3 0.3 0.4 NO3-N, mg/L 0.79 0.56 0.9 1.81 0.34 0.68 1.02 0.9 1.69 PO4-P, mg/L 0.05 0.03 0.07 0.1 0.07 0.07 0.1 0.65 0.05 Analytical Results Total Coliform, MPN/100mL 11,000 30,000 17,000 NS 23,000 8,000 NS 5,000 NS Fecal Coliform, MPN/100mL 7,000 13,000 8,000 NS 230 130 NS 20 NS Enterococcus, MPN/100mL 800 ND 3,000 NS 220 700 NS 1400 NS Oil and Grease 195 1 NS NS 2 ND NS ND NS MBAS ND NS NS NS ND ND NS 0.06 NS Cadmium, µg/L ND NS NS NS ND ND NS ND NS Copper, µg/L ND NS NS NS 0.021 0.002 NS ND NS Lead, µg/L ND NS NS NS ND ND NS ND NS Zinc, µg/L ND NS NS NS ND ND NS 29.4 NS Diazinon, µg/L NS NS NS NS NS NS NS ND NS Chlorpyrifos, µg/L NS NS NS NS NS NS NS ND NS Malathion, µg/L NS NS NS NS NS NS NS ND NS Source: County of San Diego, Department of Public Works, Watershed Protection Program, Steven DiDonna

Dry weather monitoring data was also compiled from site 11, which is the Sweetwater River at Steele Canyon Road, about 1.5 miles upstream of site 12. Table 4-12 summarizes data collected on three sampling dates for both sites 11 and 12. Water was released from Loveland Reservoir on May 17, 2005, and there was no flow at site 11 on August 3, 2005. Therefore, the dry weather sampling results for May 1, 2006 may be considered most indicative of typical dry weather flow.

For the May 1, 2006 sampling event, dry weather urban runoff occurring between Steele Canyon Road and the Old Bridge increased conductivity by 30 percent (from 1950 µS/cm to 2550 µS/cm), increased ammonia by 50 percent, increased nitrate by 60 percent, and also increased phosphorus, coliforms and zinc. Therefore, this dry weather monitoring data provides evidence that dry weather flows from urban runoff impact the source quality of the Middle Sweetwater River.

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Fortunately, the SWA has been able to divert dry weather flows since the operation of the Low Flow Barrier came on-line in June 2005. More information on this system is provided later in this subsection.

Table 4-12 Dry Weather Monitoring Results at Site SWT 11 and 12

Constituent SW-11 SW-11 SW-11 SW-12 SW-12 SW-12 5/17/05 8/3/05 5/1/06 5/17/05 8/3/05 5/1/06 Flow, cfs 16.7 0 0.52 28.08 0.93 4.32 Conductivity, µS/cm 505 2,030 1950 680 2550 2550 Turbidity, NTU 1 85 0 2 33 14 Dissolved Oxygen, mg/L 13.55 1.77 10.5 7.34 5.29 5.54 Temperature, ºC 23.4 23.2 22.7 18.6 19.4 18.3 NH3-N, mg/L 0.1 9 0.2 0.2 0.3 0.3 NO3-N, mg/L 0.68 0.56 0.56 0.68 1.02 0.9 PO4-P, mg/L 0.03 1.88 0 0.07 0.1 0.65 Total Coliform, MPN/100mL 5,000 NS 40 8,000 NS 5,000 Fecal Coliform, MPN/100mL 20 NS ND 130 NS 20 Enterococcus, MPN/100mL 130 NS 40 700 NS 1400 Oil and Grease ND NS ND ND NS ND MBAS ND NS 0.06 ND NS 0.06 Cadmium, µg/L ND NS ND ND NS ND Copper, µg/L ND NS ND 0.002 NS ND Lead, µg/L ND NS ND ND NS ND Zinc, µg/L ND NS ND ND NS 29.4 Diazinon, µg/L NS NS ND NS NS ND Chlorpyrifos, µg/L NS NS ND NS NS ND Malathion, µg/L NS NS ND NS NS ND Source: County of San Diego, Department of Public Works, Watershed Protection Program, Steven DiDonna

Regulation and Management

State Water Resources Control Board

The Clean Water Act requires the State Water Resources Control Board and the Regional Boards to regulate the discharge of storm water from a number of sources. For Phase I, these sources included large (populations greater than 250,000) and medium (population from 100,000 to 250,000) sized municipalities, most industrial sites, and construction activities of one acre or more.

For Phase II, the State Water Resources Control Board adopted a General Permit for the discharge of storm water from small MS4s to provide permit coverage for smaller

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municipalities, and non-traditional MS4s such as military bases, public campuses, and prison and hospital complexes.

Stormwater discharges are regulated on a statewide and regional basis. The State Water Resources Control Board issued two General Permits (General Industrial Activities Storm Water Permit and the General Construction Activity Storm Water Permit) to address most of the industrial facilities and construction sites within California. The San Diego Regional Board has also adopted individual stormwater permits for some facilities within their region. The Regional Boards administer the State’s General Permits and the Regional Board’s individual permits.

As mentioned earlier, the State Water Resources Control Board has issued two general permits. Dischargers whose projects disturb more than one acre of soil or whose projects disturb less than one acre, but are part of a larger common plan of development that in total disturbs one or more acres, are required to obtain coverage under the General Permit for Discharges of Storm Water Associated with Construction Activity. Construction activities subject to this permit include clearing, grading, and disturbances to the ground such as stockpiling or excavation.

The other General Permit issued by the State Water Resources Control Board is the General Industrial Activities Storm Water Permit (General Industrial Permit). The General Industrial Permit is a NPDES permit that regulates discharges associated with 10 broad categories of industrial activities. The General Industrial Permit requires the implementation of management measures that will achieve the performance standard of best available technology economically achievable (BAT) and best conventional pollutant control technology (BCT). The General Industrial Permit also requires the development of a Storm Water Pollution Prevention Plan and a monitoring plan. Through the SWPPP, sources of pollutants are identified and the means to manage the sources to reduce storm water pollution are described. The General Industrial Permit requires that an annual report be submitted each July 1.

Regional Water Quality Control Board

The San Diego Regional Board also issued a municipal storm water permit for dischargers of urban runoff from the municipal separate storm sewer systems (MS4s) draining the watersheds of the County of San Diego, the incorporated cities of San Diego County, the San Diego Unified Port District, and the San Diego County Regional Airport Authority (Order No. R9-2007-0001, NPDES No. CAS0108758). As the Order specifies requirements necessary for the permittees to reduce the discharge of pollutants in urban runoff to the maximum extent practicable, the activities implemented by the permittees will be considered source water protection activities and will be discussed in the following section.

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Sweetwater Authority

In 1985, the County Board of Supervisors approved SWA Resolution 84-8, an established policy of urban runoff protection for the Sweetwater Reservoir watershed. Resolution 84-8 provides for the collection of development fees in a portion of the Sweetwater Reservoir watershed to partially mitigate for cumulative impacts to water quality. The fees contribute toward the construction of an urban runoff diversion system around Sweetwater Reservoir.

Source Water Protection Activities

San Diego County, Department of Public Works

Municipal Sources

Roads are considered to be among the highest priority sources of pollutants in the unincorporated area of San Diego County. As such, inspections are conducted at regular intervals to assess the need for sweeping. County maintained roads and facilities are swept at the following frequencies:

• Bike Lanes – Monthly • Corporate Yards – Weekly • Roads and Streets – Annually (more frequently as needed)

San Diego County also inspects County maintained MS4s to identify the need for cleaning, maintenance, potential illicit connections, and illegal discharges.

All County maintained landfills and burn sites are inspected monthly pursuant to General Industrial Permit requirements. During fiscal year 2005-06, County landfill staff completed over 250 inspections. Inactive landfills and burn ash sites are also inspected within 24 hours of any significant rain event.

Industrial Sources

The County of San Diego Watershed Protection, Stormwater Management and Discharge Control Ordinance section 67.807(b) requires that dischargers must install, implement, and maintain at least the following minimum best management practices (BMPs):

• Prior to the rainy season, dischargers must remove or secure any significant accumulations of eroded soils from slopes previously disturbed by clearing or grading if those soils could enter the stormwater conveyance system or receiving waters during the rainy season.

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• All industrial dischargers employing ten or more full-time employees must implement pollution prevention requirements that are generally recognized in that discharger’s business as being effective and economically advantageous.

• Illicit connections must be eliminated and illegal discharge practices eliminated.

• Completed slopes that are more than five feet high, more than 250 square feet in total area, and steeper than 3:1 that have been disturbed at any time by clearing, grading, or landscaping, shall be protected from erosion prior to the first rainy season following completion of the slope and continuously thereafter.

• All materials and wastes with the potential to pollute urban runoff shall be stored in a manner that either prevents contact with rainfall and stormwater or contains contaminated runoff for treatment and disposal.

• All materials with the potential to pollute urban runoff shall be used in accordance with label directions. No such product may be rinsed into receiving waters or the stormwater conveyance system.

High priority industrial dischargers must prepare a Stormwater Pollution Prevention Plan (SWPPP), implement the plan, and maintain a copy at the site. High priority industrial facilities shall incorporate the following nonstructural BMPs into the SWPPP:

• BMPs for material handling and storage of significant materials; • BMPs for non-hazardous waste handling and recycling; • Employee training programs; • Good housekeeping practices; • Preventative maintenance practices; • Self inspection and quality assurance practices; and • Spill response planning.

High priority industrial facilities shall incorporate one or more of the following structural BMPs into the SWPPP, and install, implement, and maintain, where practicable, if use of such BMPs would significantly reduce pollution in runoff from the facility:

• Overhead coverage of outdoor work areas or chemical storage; • Retention ponds, basins, or surface impoundments that confine stormwater to the site; • Berms and concrete swales or channels that divert run-on and runoff away from contact with pollutant sources; • Secondary containment structures; and • Treatment controls, e.g., infiltration devices and oil/water separators to reduce pollutants in stormwater or authorized non-stormwater discharges.

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High priority industrial sites must also develop and implement a monitoring program that collects quantitative stormwater data from two storm events in a year and addresses oil/grease or total organic carbon, pH, total suspended solids, specific conductance, and toxic chemicals and other pollutants likely to be present in stormwater discharges.

Additionally, high priority industrial dischargers must implement the following measures to prevent the pollution of stormwater and runoff:

• Use of smaller quantities of toxic materials or substitution of less toxic materials; • Changes to production processes to reduce waste; • Decreases in wastewater flows; • Recycling of wastes as part of the production process; • Segregation of wastes; • Treatment of wastes on-site to decrease volume and/or toxicity.

San Diego County staff conducts annual inspections for the high priority industrial sites. During an inspection, the inspector identifies deficiencies, explains their impacts on urban runoff, and discusses BMP options with the operator, who then must decide which BMPs can be effectively incorporated into the facility’s industrial procedures. If enforcement action is needed, the County implements enforcement via Stormwater Inspection Reports and Administrative Citations.

Commercial Sources

All regulated commercial facilities shall install, implement, and maintain BMPs specified in the County of San Diego Stormwater Standards Manual in the following areas:

• Employee training; • Storm Water Pollution Prevention Plans; • Storm Drain Tileage and Signing; • Annual Review of Facilities and Activities; • Pollution Prevention; • Materials and Waste Management; • Vehicles and Equipment; • Outdoor Areas.

Additionally, commercial dischargers employing ten or more full-time employees must implement pollution prevention requirements that are generally recognized in that discharger’s business as being effective and economically advantageous.

Commercial outreach is conducted to help businesses understand their compliance obligations and to provide useful information on how to comply via presentations,

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printed materials and websites. The 2005-06 Annual Report for the Jurisdictional Urban Runoff Management Program indicates that equestrian outreach was increased this year due to the number of complaints against horse owners. Complaints regarding equestrian facilities involved improper manure disposal, flies, odor, and contaminated runoff. Irrigation runoff from nurseries and greenhouses was the second most frequent category of complaints with sediment and nutrients being the pollutant type.

The San Diego County Department of Agriculture, Weights, and Measures (AWM) is responsible for overseeing stormwater compliance at agricultural businesses, including golf courses, nurseries and greenhouses, cemeteries, equestrian facilities, and pest control businesses. Inspection frequency and inspection targets are based on past inspection results, complaints, and referrals received. The San Diego County AWM uses various enforcement tools as necessary to compel commercial dischargers to correct non-compliances such as a written Notice of Violation, a Corrective Action Plan and re-inspection.

Construction Sources

The County of San Diego Watershed Protection, Stormwater Management and Discharge Control Ordinance require the implementation, inspection, and maintenance of temporary BMPs during all phases of construction to reduce or eliminate the impact of discharges from construction site runoff. Pollution prevention practices are required for land disturbance dischargers employing ten or more persons.

Implementation of BMP requirements is achieved through a combination of permit issuance, project approval, field inspection, and public outreach activities. Inspection frequencies depend on whether the site has been classified as a high, medium, or low threat to water quality. The County utilizes warnings, notices of violations, administrative citations, and stop work orders to enforce applicable stormwater requirements.

New Developments

The previous 2001 and recently issued 2007 Phase I Stormwater NPDES permit for San Diego County and incorporated cities (Order No. R9-2007-0001, NPDES No. CAS0108758) requires treatment control BMPs for new developments. Treatment control BMPs require that the runoff volume shall be infiltrated, treated, or filtered prior to discharge to any waters of the United States. The treatment control BMPs need to be sized based on either volume or flow from the site. Volume-based treatment control BMPs need to mitigate runoff produced from the 24-hour 85th percentile storm event, and flow-based control BMPs need to mitigate the maximum flow rate produced from rainfall intensity of 0.2 inch of rainfall per hour, for each hour of a storm event.

According to the County of San Diego, Department of Public Works, the County will encourage more low impact development BMPs, compared to treatment control BMPs in the future. Low impact development BMPs are implemented through the use of

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specific materials for parking lots and walkways, as well as the design of the site to encourage runoff into pervious areas. The 2007 permit also requires that pollutants of concern be identified for each development, and that the treatment control BMPs should have either a medium or high pollutant removal efficiency for the pollutants of concern. The County of San Diego will also begin tracking BMPs implemented at new developments into a database.

Sweetwater Authority

In order to address urban runoff in the watershed, the SWA began operating Phase I of the URDS in 1991. Although Phase II was completed in 1998 to capture urban runoff from all areas upstream of the reservoir, it did not begin operation until June 2005. Figure 4-15 shows both Phase I and Phase II of the URDS system. Phase I, which is designed to capture urban runoff flows from development immediately adjacent to the north side of the Sweetwater Reservoir, consists of three ponds (Gum Tree Cove, Alacena Ct., and Hansen’s Creek) and associated piping. Phase II consists of the Low Flow Barrier and the North Side pond. The capacity of the Low Flow Barrier is 50 cubic feet per second (cfs).

The URDS captures first flush storm flows and dry weather urban runoff before the water enters the Sweetwater Reservoir. Runoff is first channeled into a forebay. When electrical conductivity is greater than 1200 µS/cm, water is diverted into the holding ponds. When the water is less than 1200 µS/cm, this water bypasses the diversion system and is allowed to enter the Sweetwater Reservoir. The total capacity of the four ponds is 120 acre-feet.

The four holding ponds act as temporary wetland marshes where pollutants are removed through bioremediation. The SWA is currently working with the University of California at Los Angeles to optimize removal processes of the holding ponds. When the capacity of the ponds is reached, the water is directed downstream to the URDS’ pump station. From there, the water is pumped over the Sweetwater Dam and into the Lower Sweetwater River.

Summary of Findings for Urban Runoff

• During fiscal year 2005-2006, the County of San Diego identified 35 municipal facilities, eight industrial sites, and numerous commercial facilities and construction sites which have the potential to discharge pollutants to the MS4 system within the Middle and Upper Sweetwater watershed. Due to the sheer number of sites, the total number of commercial facilities and construction sites within the Sweetwater watershed was not tabulated. Commercial facilities of particular interest within the Sweetwater watershed are equestrian facilities and golf courses.

• Additionally, there were six sites that were covered under the State Water Resources Control Board General Industrial Activities Storm Water Permit, and a

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number of sites were covered under the General Construction Activity Storm Water Permit. Generally, the sites are in compliance or have incurred minor violations related to monitoring or reporting.

• Generally, the County inspects municipal sites, high priority industrial sites, and commercial sites on an annual basis. High priority industrial sites are required to prepare a SWPPP which identifies structural and non-structural BMPs implemented at the site, and develop and implement a monitoring program that collects quantitative stormwater data from two storm events every year.

• Beginning in 2002, dry weather monitoring has been conducted by the County of San Diego at 25 locations within the Sweetwater Reservoir watershed. Monitoring results of the Sweetwater River at the Old Bridge (site 12) show high mineral content in the dry weather flows, as well as high total and fecal coliform, and occasionally high levels of nutrients, particularly phosphorus. Copper and zinc were detected in a few samples.

• Dry weather sampling data was compared at the Sweetwater River at the Steele Canyon Road (site 11) and the Sweetwater River at the Old Bridge (site 12). Site 11 is approximately 1.5 miles upstream of site 12. Data collected on May 1, 2006 demonstrate that dry weather flows from urban runoff impact the Sweetwater River. Conductivity increased by 30 percent (from 1950 µS/cm to 2550 µS/cm), ammonia increased by 50 percent, and nitrate increased by 60 percent from site 11 to site 12. Phosphorus, coliforms, and zinc also increased.

• The URDS is able to divert dry weather flows and a portion of wet weather flows from entering the Sweetwater Reservoir. However, as development increases in the watershed, the current capacity of the URDS may be exceeded. The SWA should continue to operate and optimize the URDS to prevent urban runoff from entering the Sweetwater Reservoir.

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WASTEWATER

Background

Various types of wastewater facilities such as wastewater treatment plants, wastewater pump stations, and septic systems will be discussed in this section.

Wastewater is known to contain pathogenic microorganisms. Wastewater treatment plants remove and/or inactivate some, though not all, of these organisms through various treatment processes. Secondary treatment of domestic sewage is expected to remove 75 to 99 percent of enteric viruses1, 85 to 99 percent of heterotrophic bacteria2, and 922 percent of Giardia cysts.

Seasonal Patterns

Related Constituents

Wastewater is a blend of sewage, washwater from showers, kitchens, etc., and any effluent from industrial facilities within the sewer collection system. Potential contaminants of concern in wastewater include microbial pathogens (such as bacteria, viruses, and protozoa), TOC, nutrients, VOCs, and SOCs.

Septic tank effluent typically contains high concentrations of TDS, chlorides, phosphates, nitrates, bacteria, and viruses.

Occurrence in Watershed

Wastewater Pump Stations

There are nine wastewater pump stations located in the watershed, as shown in Table 4-13 and Figure 4-16. The County of San Diego Department of Public Works owns and operates the Rancho San Diego, Jamacha, Ramona, Vista del Lago, and the Harbison Canyon pump stations. The Otay Water District owns and operates the Steele Bridge, Hidden Mountain, Calavo Gardens, and Cottonwood Meadows pump stations. Table 4-13 contains information on pump station capacities, flow rates, overflow capacities, emergency power, and spills.

1 National Research Council, 1998. Issues in Potable Reuse: The Viability of Augmenting Drinking Water Supplies with Reclaimed Water. National Academy Press. 2 Chauret, C. et al., 1999. Fate of Cryptosporidum oocysts, Giardia cysts, and microbial indicators during wastewater treatment and anaerobic sludge digestion. Canadian Journal of Microbiology, 45: 257-262.

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Table 4-13 Wastewater Pump Stations Located in the Upper and Middle Sweetwater Watershed

Pump Capacity, Design Average Peak Overflow No. Hours of Generator Spills since Station gpm Average and Daily Daily Capacity, Storage at 1995 Name Peak Flow, Flow Flow gallons Design gpm 2006, 2006, Average gpm gpm Flow Rancho San 4,800 4,000/4,800 731 1,335 3,400,000* 14 500 kW diesel generator None Diego w/ATS and 300 gallon tank (8 hours) Steele Bridge 1.3 mgd 1.3 mgd N/A N/A Shared with N/A None Rancho San Diego Pump Station Hidden Mtn. Information not provided by Otay Water None None Yes None Calavo Information not provided by Otay Water None None Yes None Gardens Cottonwood Information not provided by Otay Water None None Yes None Meadows Jamacha 1,100 210/420 186 189 245,000 19 180 kW diesel generator 1 w/ATS and 300 gallon tank (20 hours) Ramona 290 100/250 62 77 54,000 9 60 kW generator w/ATS 1 with propane (58 hours) Vista Del 100 25/86 21* 39** 31,000 21 Emergency power hookup None Lago for portable generator Harbison Unknown Unknown Unknown Un- Unknown 24 80 kW generator runs on None Canyon known natural gas

*Although the size of the overflow basin is 3,400,000 gallons, the hydraulic grade of the piping will not allow this much volume to be stored without flooding the pump station. In actuality, the useable volume is approximately 850,000 gallons (Personal Communication, Mark Perrett, San Diego County Dept. of Public Works). The County is investigating upgrades within the next 1-2 years to allow the entire volume of the basin to be usable. ** No flow meter at Vista Del Lago. Previous numbers of 21 gpm average and 39 gpm peak are reasonable since the pumps were recently rebuilt and the local population has not changed. Source: San Diego County Department of Public Works, Wastewater Management Section and Otay Water District

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According to Otay Water District, the Steele Bridge Pump Station has two pumps (one standby) and is designed for a flow rate of 1.3 mgd capacity. The Steele Bridge Pump Station provides water for the Otay Water District’s Ralph W. Chapman Water Reclamation Facility and only pumps water when it is needed for reclamation. Therefore, the pump station flow rate normally does not vary, as the pump station is either on or off. If the Steele Bridge Pump Station is off, the remainder of the wastewater flow goes to the County’s Rancho San Diego Pump Station.

The Steele Bridge Pump Station does not have its own overflow detention basin, as any overflow could be handled by the Rancho San Diego Pump Station. The Steele Bridge Pump Station has emergency power, and its high level alarm is connected to the Otay Water District as well as SWA.

There were two spills which occurred over the ten-year reporting period; one spill occurred at the Jamacha Pump Station and one spill occurred at the Ramona Pump Station. The spill at the Jamacha Pump Station occurred in the spring of 1995 and although some wastewater spilled on the ground around the station, the flow was re- directed into the overflow basin. The spill at the Ramona Pump Station occurred on May 11, 1997 when the force main developed a small hole. Approximately 1,000 gallons reached the storm drain before the station was shut down and repairs were made. There was no direct impact to the Perdue WTP as 100 percent raw imported water was utilized on the date of the spill.

Wastewater Treatment Plants and Non-Residential Septic Systems

Table 4-14 lists the facilities which hold WDRs for wastewater disposal within the Upper and Middle Sweetwater watershed, per the Regional Board files. Both the Viejas and Sycuan Tribes have wastewater treatment plants which serve their respective casinos and tribal population. These two wastewater treatment plants and the Alpine R.V. Resort and the Ma Tar Awa R.V. Park, owned by the Viejas Tribe, are not required to have permits with the Regional Board because they discharge to Indian owned lands.

Information was provided by the Viejas Tribal Council that all wastewater flows from the Viejas casino, outlet mall, RV parks, and reservation are treated at their wastewater treatment plant. There may be one or two remaining septic systems on the reservation. The current wastewater treatment plant was constructed in 1998 and employs tertiary treatment. Most if not all of the treated effluent from the wastewater plant goes to a reclaimed storage tank, where it is used for irrigation on the reservation (Personal Communication, Jim Reed, Director of Public Works, Viejas). Occasionally, the effluent is sent to infiltration basins where it recharges the groundwater. No information on the flow rate of the wastewater plant was provided.

Information was also provided by the Sycuan Tribal Council regarding their wastewater treatment facility. The Sycuan wastewater treatment plant was constructed in 1993 and began operation in 1994. Since then, the plant has had two expansions and can treat up to 300,000 gallons/day of raw sewage. The average daily flow is 105,000

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gallons/day, with weekend flows averaging 137,000 gallons/day. Raw sewage from the Sycuan casino facilities and 17 Tribal homes flow by gravity into two lift stations located at the southeastern and southwestern corners of the Sycuan casino. The wastewater treatment plant uses a technology called sequencing batch reactors, and the effluent from this system is then pumped to two sand filters. The filtered water is then disinfected and re-used for landscape irrigation and non-potable uses in the Sycuan Casino and Administration building.

Sludge is dewatered and the dry product is taken to the City of San Diego’s landfill. Sycuan also has an Industrial Trucked Waste Discharge Permit, issued by the City of San Diego to discharge sludge into the City of San Diego’s sewer system when needed. The Sycuan Tribe also indicated that there have been no spills of either raw or treated sewage within the reservation.

Table 4-14 Waste Discharge Requirements Permits in the Upper and Middle Sweetwater Watershed

Agency Name Facility Name Regional Board Order No. San Diego County, Public Descanso Detention Water 93-112 Works Pollution Control Facility Swallows Sun Island Club, Swallows Sun Island Club 95-19 State of California Cuyamaca Rancho State 94-114 Department of Parks and Park Recreation Thousand Trails, Inc. Oakzanita Springs Park 94-14 Pair-A-Dice Mobile Home Pair-A-Dice Mobile Home 95-89 Park Park Otay MWD Ralph W. Chapman Water 2007-0038 Reclamation Facility

The Descanso Water Pollution Control Facility is located near the intersection of Jatapul Valley Road and Interstate 8. The facility consists of two activated sludge package treatment units with a total flow rate of 0.040 mgd. The treated effluent is disposed of by spray irrigation on 11.6 acres of lawn and shrub areas and by flood irrigation of trees located in the facility.

The Swallows Sun Island Club is located approximately five miles east of El Cajon in Harbison Canyon. Domestic wastewater is discharged to a total of five septic tank/leach line systems and four septic tank/seepage pit systems. The estimated peak wastewater flow is 15,000 gallons per day.

The 21,000-acre Cuyamaca Rancho State Park is located approximately 40 miles east of San Diego. Approximately 37 septic tank/leach line systems and two recreational vehicle dump stations are present. No information on wastewater flow was available.

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The Oakzanita Springs Park is located approximately 3 miles northeast of the junction of State Highway 79 and Interstate 8. The facility has a total of six septic tank/leach line systems and a recreational vehicle dump station. No information on wastewater flow was available.

The Pair-A-Dice Mobile Home Park is located approximately 0.75 mile west of the community of Guatay. The facility is mainly used as a mobile home park with permanent residents. The mobile home park consists of 82 sewered mobile home/RV spaces, 10 unsewered campsites, two public restrooms with showers, and laundry facilities. The sewage disposal system consists of seven septic tank/leach line systems. No information on wastewater flow was available.

The Ralph W. Chapman Water Reclamation Facility (RWCWRF) is located in Rancho San Diego and is owned by the Otay Water District. Raw sewage is pumped to the RWCWRF from the Rancho San Diego Pump Station and/or the Steele Canyon Pump Station. The RWCWRF is a tertiary treatment facility with capacity to treat 1.3 mgd of wastewater. On average, the plant produces approximately 1.1 mgd of recycled water. All treated effluent is used for recycled water.

In the fall of 2003, the Otay Water District signed an agreement with the City of San Diego for the right to receive up to 6 mgd of recycled water from the City of San Diego’s South Bay Water Reclamation Plant (SBWRP), located in San Ysidro. The agreement increases the Otay Water District’s recycled water supply from 1 mgd to at least 7 mgd. In 2007, construction of transmission facilities is expected to be complete and the Otay Water District will blend disinfected tertiary effluent from the RWCWRF with recycled water from the SBWRP, then distribute to recycled water users located within the hydrologic areas of Telegraph (HAS 909.11), La Nacion (HSA 909.12), Otay Valley (HA 910.20), Tijuana Valley (HA 911.10) and Water Tanks (HSA 911.12), as shown in Figure 4-17.

Effluent used for recycled water does not impact the Sweetwater Reservoir, as the recycled water users’ boundaries are outside the Middle and Upper Sweetwater watershed. However, the location of the RWCWRF is along the Sweetwater River, approximately three to four miles upstream of the Sweetwater Reservoir. Therefore, concerns with the site are related to runoff, spills, and plant overflow events.

Order R9-2007-0038 is the permit issued by the Regional Board which establishes master reclamation requirements for the production, distribution, and use of recycled water in the Otay Water District service area. The order requires that all wastewater and recycled storage facilities shall be protected against erosion, overland runoff, and other impacts resulting from a 100-year, 24-hour frequency storm. Additionally, all waste treatment, storage, and purveyance facilities shall be protected against 100-year peak stream flows as defined by the San Diego County flood control agency.

The Otay Water District is not required to have wet-weather storage facilities for the RWCWRF because the RWCWRF has the ability to discharge excess treated effluent to

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the Spring Valley Sanitation District via a bypass pipeline, thereby providing connection to an ocean outfall at all times. Figure 4-17 Otay Water District Recycled Water Program

Source: Otay Water District Water Conservation and Recycling Update, 1st Quarter Fiscal Year 2005- 2006

Residential Septic Systems

There are residential areas within the watershed that have septic systems, but the County of San Diego Department of Environmental Health (DEH) has no database to quantify the number of systems. These areas were identified in the 1995 Watershed Sanitary Survey as Fuerte Farms, Crest, Dehesa, Harbison Canyon, Lyons Valley, and the Willows. County DEH staff stated that more complaints are received regarding older septic systems. This is because the lots in the older areas are smaller, and there is less disposal system area. Older systems are also more difficult to repair and were not designed to today’s criteria.

Related Water Quality Issues and Data Review

The WDR for the Descanso Water Pollution Control Facility specifies effluent limitations for biochemical oxygen demand, total suspended solids, pH, total dissolved solids, chloride, sulfate, boron, fluoride, coliform, and turbidity.

No effluent monitoring is currently required for the Swallows Sun Island Club.

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The WDR for the Cuyamaca Rancho State Park requires that a liquid grab sample at one of the dump station septic tanks shall be collected annually (at a minimum) close to the outlet pipe. The sample is to be tested for pH, phenols, and zinc.

The WDR for the Oakzanita Springs Park requires that a liquid grab sample at one of the dump station septic tanks shall be collected annually (at a minimum) close to the outlet pipe. The sample is to be tested for pH, total dissolved solids, formaldehyde, phenols, volatile organics, total nitrogen, chloride, and sulfate.

The WDR for the Pair-A-Dice Mobile Home Park requires that a liquid grab sample at one of the septic tanks shall be collected once every three years (at a minimum) close to the outlet pipe. The sample is to be tested for pH, zinc, surfactants, nitrate as NO3, chloride, and sulfate.

The WDR for the RWCWRF requires extensive monitoring of the discharge which is outlined in Order No. R9-2007-0038.

There have been no violations with these WDRs over the reporting period.

Regulation and Management

Wastewater Pump Stations

The County of San Diego Department of Public Works performs checks and alarm testing on a daily and weekly basis to increase the service life and reliability of the equipment at the wastewater pump stations. Stations are linked to the County’s main office via radio telemetry, enabling County staff to obtain real-time status from a remote location. All of the stations are equipped with redundant control systems, pumps, and overflow storage basins to increase the ability to avert a spill. All critical stations are equipped with emergency generators to supply power.

County Public Works personnel state that they have circuitry on their pumps to detect a high sewage flow as well as an electrical amp draw alarm condition that would detect a rupture in the system. The present alarm system used by the County consists of sensing equipment (float switches, bubbler system indicators, etc.) at the pump stations, and using Motorola radios to communicate with a base station at the Spring Valley Operations Center. This base station communicates with a SCADA computer which notifies operators of any alarm conditions via telephone calls to cell phones, home phones, or pagers.

For regulatory information on wastewater pump stations, please see the section on Regulation and Management for Spills.

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Residential Septic Systems

The County DEH does not have the time and resources to inspect septic systems routinely. They inspect systems on a complaint-basis only. If a system fails, the County responds and requires the owner to fix the failed system.

Wastewater Treatment Plants and Non-Residential Septic Systems

As discussed earlier, each of these facilities except the wastewater treatment plants owned by Indian tribes, is regulated by a WDR for wastewater disposal. Please refer to Table 4-14, for the Regional Board Order No. for each of the facilities.

Source Water Protection Activities

As there are no direct wastewater discharges to the Sweetwater River, and the wastewater pump stations within the watershed have had no spills within the last five years, no source water protection activities to address wastewater are recommended at this time.

Summary of Findings for Wastewater

• There are no wastewater treatment plants which discharge treated effluent directly to the Sweetwater River.

• There have been no spills from the wastewater pump stations in the watershed during the last five years.

• There are six facilities within the watershed that have WDRs; four facilities have septic systems that accept RV hook-up waste, and two facilities employ wastewater treatment, but send their effluent for either reuse or irrigation.

• There are also two additional wastewater treatment plants in the watershed, owned by the Sycuan and Viejas Tribes which are in operation but not regulated by the Regional Board as they discharge to Indian owned lands.

• No source water protection activities are recommended at this time.

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PROPOSED HIGHWAYS AND OTHER DEVELOPMENTS

Background

The Upper and Middle Sweetwater watersheds are undergoing development activity which will cumulatively affect the quality of water tributary to, and stored in Sweetwater and Loveland Reservoirs. In this section, a variety of urban projects will be discussed (both planned and constructed), such as the construction of Route 125, residential developments, commercial developments, and golf courses.

Seasonal Patterns

As stated earlier, urban runoff occurs on a year-round basis and includes wet and dry weather discharges. Wet weather runoff results from seasonal storms. Wet weather runoff is of relatively short duration and can have highly variable pollutant concentrations. Because of the high degree of imperviousness, urban areas typically generate higher per acre volumes of runoff than undeveloped or agricultural lands. Dry weather runoff results from activities such as lawn irrigation and car washing.

There may be seasonal patterns associated with atmospheric deposition from the Route 125 construction site, which is currently under study by the USGS.

Related Constituents

As the Sweetwater Reservoir is downwind of the Route 125 construction site, SWA is concerned about vehicle emissions and road dusts which may enter the reservoir through atmospheric deposition.

The use of pesticides, herbicides, and fungicides on golf courses can enter surface water through direct application, runoff, and wind transport.

Urban runoff can be a source of TOC, suspended solids, nutrients, metals, bacteria, and other constituents such as pesticides and organic compounds. Generally, the impact is greater during the wet season, immediately following a first-flush event.

Occurrence in Watershed

Construction of Route 125

Construction of Route 125 began in November 2003. As proposed, this $411 million project will be an initial four lane (ultimate 8 to 10 lane), 9.5 mile toll road on new alignment. The alignment will connect existing Route 125 to State Route 905. More than 200,000 vehicles per day, including a high percentage (more than ten percent) of heavy diesel trucks from both the United States and Mexico are expected to travel the alignment when completed (USGS, 2001). The alignment will be upwind of the

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Residential

The Pointe is a 1,000-acre master planned community located near Sweetwater Reservoir, as shown in Figure 4-19. Construction of the first phase began in early 1992, and currently there are approximately 800 housing units. At the present time, it is undetermined when the entire community will be completed. Future plans include a golf course, as well as retail and commercial development. The location of the proposed golf course is immediately adjacent to the Sweetwater Reservoir. Usage of nearby equestrian trails in the San Diego Wildlife Refuge may also increase as a result of this new community.

SWA has continued to coordinate with the developer on this project and has submitted numerous comment letters.

Figure 4-19 Schematic of Pointe Development near Sweetwater Reservoir

Source: http://www.pointesandiego.com/index.html

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Golf Courses

As mentioned in the 1995 Watershed Sanitary Survey, there are three golf courses within the watershed, as shown in Figure 4-20. The Sweetwater River runs directly through the Cottonwood Golf Course and the Sycuan Resort Golf Course (formally Singing Hills Golf Course). Steele Canyon Golf Course is located in Jamul. The Sycuan Golf Course has three 18-hole courses, Cottonwood Golf Course has two 18- hole courses, and Steele Canyon has three 9-hole courses.

McGrath Family YMCA

Due to its proximity to the Sweetwater River and the Sweetwater Reservoir, the McGrath Family Young Men’s Christian Association (YMCA) was examined as a potential contaminant source. The site acreage is approximately 11.5 acres and consists of baseball, softball, soccer fields, soccer arena, and basketball courts (Personal Communication, Steve Rowe, Executive Director YMCA). When finances become available, a three-acre building is planned for the site.

SWA wrote comment letters on this project in March and September 2001 to the County of San Diego Department of Planning and Land Use (DPLU). SWA requested that the use of reclaimed water be prohibited unless treated to a level approved by the Regional Board, the CDPH, and SWA. Additionally, reclaimed water should receive advanced state-of-the-art tertiary treatment to remove pathogens and should be in compliance with the adopted Regional Water Quality Control Board’s Basin Plan. Sweetwater also requested that a list of pesticides, fungicides, and fertilizers proposed to be used on the site should be submitted to SWA’s Director of Water Quality, and that SWA be allowed to inspect the site periodically.

SWA received a list of chemicals used for the ballfields and the planters in 2006. As of the writing of this report, Ranger Pro herbicide is used to control weed growth and 21-7- 14 fertilizer is used to promote plant health. The active ingredients are glyphosate and nitric phosphates (primarily ammonium nitrate phosphate), respectively.

Related Water Quality Issues and Data Review

Route 125

In 1998, the USGS began a study to monitor the effects of the construction and operation of the Route 125 alignment on the water quality in Sweetwater Reservoir. The study is divided into two phases. In Phase I, select contaminants in air, water, and bed sediments will be measured to establish baseline conditions. During Phase II, sampling will continue during and after toll road construction. The chemical concentrations from Phase I and Phase II will be compared to assess what impact Route 125 has on the water quality of Sweetwater Reservoir. No conclusions can be drawn from the study at this point, as construction is not completed.

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Golf Courses

A variety of pesticides and herbicides are used on golf courses to maintain the green and to keep rodents and pests from burrowing. Pesticide use records were obtained for the three golf courses from the County of San Diego AWM. Tables 4-15 through 4-17 summarize pesticide use at each golf course from 2004 through 2006. Pesticide use data for years prior to 2004 could not be obtained as the County is only required to keep three years of historical data.

Tables 4-15 through 4-17 indicate the USEPA toxicity category for the most commonly used chemicals at each golf course. With the exception of strychnine and diphacinone, all of the commonly used chemicals have a USEPA category of III or IV, indicating slightly toxic to practically non-toxic, respectively. As the percentage of active ingredient in strychnine and diphacinone is less than 2 percent, the concern with the use of these chemicals is minimized. In summary, the Sycuan Resort uses the largest quanitities of pesticides, then Steele Canyon Golf Course, and the Cottonwood Golf Course uses the least amount of pesticides. The most commonly used chemicals are mancozeb and propiconazole.

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Table 4-15 Pesticides Used at Steele Canyon Golf Course, 2004-2006

EPA Toxicity Chemical Name Quantity Used Category 2,4-D 10 oz. Aluminum Phosphide 34000 grams I Azoxystrobin 195.9 oz. and 14 lbs. IV Chloropyrifos 1.19 gallons Chlorothalonil 35.5 gallons IV Chlorsulfuron 8 oz. Clopryralid 88.5 oz. and 2.5 gallons Copper Sulfate 260 lbs. III Diquat 31 oz. Ethephon 81.23 gallons IV Fluazifop-p-butyl 3.25 oz. Fludioxonil 125 oz. and 24.4 lbs. Flutolanil 239.7 lbs. IV Fosetyl-al 188 lbs. III Glyphosate 765 oz. and 3 gallons Imidacloprid 227.8 oz III Iprodione 53.7 gallons IV Lambda-Cyhalothrin 168 oz. Mancozeb 635 lbs. IV Mefenoxam 151 oz. and 5.36 gallons Metribuzin 57 oz. msma 1.25 gallons and 14 oz. Oxadiazon,benefin 34 lbs. pcnb 20 gallons and 170 lbs. Prodiamine 134.5 oz. and 94.2 lbs. and 38 gallons IV 95.25 oz. and 44.5 gallons and 143.5 Propiconazole lbs. III Quinclorac 74 oz. and 2 lbs. Thiophanate-methyl 8 gallons Trifloxystrobin 7.65 lbs. IV Trifloxysulfuron-sodium 34.89 oz. Trinexapac-ethyl 3141.5 oz. and 11.26 gallons IV

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Table 4-16 Pesticides Used at Cottonwood Golf Course, 2004-2006

EPA Toxicity Chemical Name Quantity Used Category Azoxystrobin 64 oz. IV Chlorothalonil 53 gallons IV Chlorothalonil/Thiophanate-methyl 45 lbs. Chlorpyrifos/Xylene Range Aromatic Solvent 64 oz. Copper Ethanolamine Complexes 32 oz. and 5 gallons Diphacinone 50 lbs. I Diquat 1 gallons Fluazifop-p-butyl 1.5 oz. Glyphosate 272 oz. and 3.5 gallons Imidacloprid 54.4 oz. III lambda-cyhalothrin 45 oz. Mancozeb 414 lbs. IV 820 oz. and 109.5 Propiconazole gallons III Strychnine 232 lbs. I

Table 4-17 Pesticides Used at Sycuan Golf Course, 2004-2006

EPA Toxicity Chemical Name Quantity Used Category Azoxystrobin 2280 oz. IV Chloropyrifos 192 oz. Chlorothalonil 488.8 lbs. IV Chlorpyrifos 774 oz. Dicamba, 2,4-D 1.5 lbs. Ethephon 3780 oz. IV Ethyl Alcohol 5 lbs. Fludioxonil 288 oz. Fosetyl-al 817.5 lbs. III Glyphosate 14 gallons 16.2 grams and 37 Halosulfuron-methyl oz Imidacloprid 660.5 oz. III Mancozeb 3453 lbs. IV Mefenoxam 2326 oz. Myclobutanil 72 oz. Prodiamine 14 lbs. Propiconazole 16110 oz. III Pyraclostrobin 162 oz. Thiophanate-methyl 60 lbs. Trifloxystrobin 179.5 lbs. IV Trinexapac-ethyl 200 oz. IV

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It is difficult to assess water quality impacts to the Sweetwater River from the use of pesticides at the three golf courses, as the majority of the chemicals currently used are not required to be monitored for drinking water. However, the SWA conducts selected pesticide sampling of the most downstream well for each golf course once every two years, and levels of pesticides have been non-detectable or at very low levels.

As part of the USGS study, simazine and prometon have frequently been detected at both Sweetwater and Loveland Reservoirs. The insectide diazinon is also routinely detected at Sweetwater. The concentrations are extremely low, with average concentrations of 0.015 µg/L for simazine, 0.006 µg/L for prometon, and 0.007 µg/L for diazinon (USGS, 2001 and 2007).

The Cottonwood Golf Course provided additional information on the use of fertilizers. The Cottonwood Golf Course applies fertilizer monthly for the greens and twice a year for the course. The fertilizer used is ammonium sulfate, and the application rate is 0.75 lbs. of nitrogen for every 1,000 square feet of turf. As the total course area is approximately 300 acres, approximately 12 to 14 tons of ammonium sulfate is applied twice a year. The chemical composition for the fertilizer used on the course is 21-0-0 (21% N, 0%P, 0%K), and for the green is 12-0-18. Therefore, the fertilizers used at the Cottonwood Golf Course do not contain phosphorus.

Regulation and Management

County of San Diego

Golf Courses

The County of San Diego AWM Pesticide Regulatory Program is the enforcement program for administration of state pesticide laws in the County of San Diego. The Pesticide Regulatory Program ensures that pesticides are used in an appropriate and responsible manner to protect the environment, the public, and employees of businesses that handle pesticides. The Pesticide Regulatory Program conducts pesticide monitoring inspections at all golf courses.

General Development

The County of San Diego Board of Supervisors Policy A-106, Section II.9 states: “The Board shall use its powers to assure that local water supplies and distribution facilities are protected. San Diego County has a number of dams and reservoirs which store local and imported water. The quality of water in some of these reservoirs is threatened by encroaching urban developments. The Board shall not approve a subdivision map or

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development unless adequate provisions are made to protect water supply reservoirs from urban runoff.”

Sweetwater Authority

The SWA began tracking development in the Sweetwater Reservoir watershed in the late 1970s. More than 5,400 cases have been reviewed by SWA staff since 1978.

In 1985, the County Board of Supervisors approved SWA Resolution 84-8, an established policy of urban runoff protection for the Sweetwater Reservoir watershed. Resolution 84-8 provides for the collection of development fees in a portion of the Sweetwater Reservoir watershed to partially mitigate for cumulative impacts to water quality. The fees contribute towards the construction of an urban runoff diversion system around Sweetwater Reservoir.

In 1993, the Governing Board of the SWA passed Resolution 93-8 which directs staff to review development activities in the entire watershed of the Sweetwater River and to comment to agencies which have planning jurisdiction within the watershed. Comments focus on potential impacts to water quality and the need to identify those water quality impacts.

SWA coordinates with the County of San Diego DPLU staff on discretionary applications for development projects located within the fee collection area. Additionally, comments are provided on development proposals when there are concerns relating to impacts to surface water and/or groundwater that may result from high risk or very high risk potentially contaminating activities.

Source Water Protection Activities

Over the reporting period, the SWA has written numerous comment letters to the County of San Diego, DPLU on proposed developments. The following is a sampling of developments for which SWA submitted comment letters. A project summary and the items of concern identified by the SWA are provided.

Maggio Ranch

SWA reviewed the notice of intent to prepare a draft environmental impact report (EIR) and the Draft EIR for Maggio Ranch. The proposed Maggio Ranch project is the development of a 105-acre site with 41 lots, including 37 residential lots, an equestrian/recreation center, open space, a sewage treatment plant and percolation pond. The project site is entirely within the watershed of the Loveland Reservoir, approximately 10.5 miles northeast.

In 1996 and 1999, SWA stated concerns regarding increases in urban runoff, increased levels of nitrates caused by treated sewage effluent flowing toward Loveland Reservoir,

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and no mitigation measures in place if the sewage treatment plant were to fail. A study of the potential impacts of the proposed wastewater treatment plant was also requested.

In November 2002, County of San Diego DPLU notified the owner that the project was considered to be withdrawn because required subdivision re-designs had not been submitted.

Oaks at Descanso Recreational Vehicle Park

SWA reviewed the Supplemental Draft EIR for the Oaks at Descanso RV Park. The proposed project is on a 62.3-acre site within the Loveland Reservoir watershed. The proposed project includes 85 graded RV spaces, a 14,850 square foot recreation, meeting, dining, kitchen and restroom facility; a 6,000 square foot structure to contain the caretaker’s quarters, country store, restrooms, library and café; a 5,000 square foot residence, maintenance and storage facility; restroom facility, swimming pool and spa; and private roads.

In 1999, SWA raised concerns of the project’s impact to groundwater quality. Specific issues are RV hookups to septic systems and a proposed sewer main crossing a tributary of the Upper Sweetwater River.

In May 2005, the San Diego County Planning Commission approved a time extension for implementation of a major use permit for the RV park. The Descanso Community Planning Group and Save Our Forests and Ranchlands appealed the Planning Commission’s decision to the Board of Supervisors in August 2005.

Willow Glen Ranch Subdivision

SWA reviewed the draft Negative Declaration for the Willow Glen Ranch project. The project proposed a residential subdivision of 25 lots and a remainder parcel on approximately 19 acres. The project site is approximately 5.6 miles upstream of Sweetwater Reservoir, with the 100-year floodplain of the Sweetwater River about 120 feet southerly of the property.

In 1996 and 1997, SWA stated its opposition to the use of reclaimed water or groundwater for irrigation purposes. The SWA also requested to review: 1) all grading and drainage plans, 2) proposed use of groundwater, and 3) plans for removing manure stockpiles, organic materials, and hazardous materials prior to grading.

These conditions were satisfied in 2000, the urban runoff protection fees for the project were paid, and the residential subdivision was constructed.

Fuerte Ranch Estates

In 2006, SWA provided comments on the proposed Fuerte Ranch Estates project, where 40 single-family residential lots are planned on a 27-acre site located within the

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Sweetwater Reservoir watershed. SWA raised concerns relating to impacts to surface water and/or groundwater that may result from historical use of the property as a chicken ranch. SWA requested that a plan be submitted for the removal of existing manure stockpiles, other organic material, and hazardous materials from the project site prior to grading.

County of San Diego DPLU is currently processing this proposal and the site is still active as a poultry ranch.

Simpson Farms

In 2005 and 2006, SWA provided comments on the replacement tentative map and First Iteration Review of Initial Studies/Information for Simpson Farms. The proposed development includes the subdivision of approximately 162 acres into 97 single-family residential lots, one open space lot, five private street lots, and one commercial lot. Individual septic systems are planned.

SWA commented that the addition of 97 septic systems could increase nitrates and impact the Sweetwater Reservoir. SWA requested that two existing groundwater monitoring wells, the Harwood well and the Cottonwood well should be regularly sampled and compared to monitoring wells in the vicinity of the Simpson Farms property. Additionally, it was requested that monitoring points be established and sampled on tributaries flowing downgradient from the Simpson Farms property prior to confluence with the Sweetwater River, as well as near the URDS Low Flow Barrier. It was requested that copies of all laboratory results be provided to SWA. SWA also commented that any proposed use of reclaimed water should be prohibited unless treated to a level approved by the Regional Board, the CDPH, and the SWA.

The County of San Diego DPLU is currently processing this proposal.

Nobel Nursery

In 2004, the SWA provided comments on the Nobel Nursery, a 21-acre site approximately five miles northeasterly of the Sweetwater Reservoir. Except for a parking area, no construction is proposed for the site. Existing structures on the property would remain for residential purposes; use for the proposed nursery operations would be secondary. An existing septic system would remain. The SWA raised concerns relating to impacts to surface and/or groundwater that may result from future use of the property as a plant nursery. It was requested that the applicant meet with SWA to discuss the project’s participation in a chemical monitoring program.

The County of San Diego DPLU is currently processing this proposal.

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Katzer Veterinary Clinic

In June 2003, SWA provided comments on the Draft Negative Declaration, Initial Study and supporting environmental reports for the proposed Katzer Veterinary Clinic in Jamul. The project site is located approximately 7.2 miles upstream of the Sweetwater Reservoir via a tributary of the Sweetwater River. SWA requested that animal waste from the facility be incinerated or disposed of through the septic system, and that all effluent from washing down of kennels or animal care areas should be directed to the septic system.

In August 2003, the County of San Diego DPLU conditionally approved a major use permit. Water quality comments by SWA pertaining to the maintenance of proper sanitary conditions within the proposed clinic were noted, but additional conditions were not included in the permit decision.

Mt. Miguel Commerce Community

In November 2000, SWA commented on the Environmental Initial Study and proposed Mitigated Negative Declaration for the Mt. Miguel Commerce Community, located approximately one mile northeasterly of Sweetwater Reservoir. The proposed project is the subdivision of 16.61 acres into 15 lots, including 14 industrial and one open space lot. SWA requested that the applicant meet with SWA to ensure that the drainage improvements proposed for the site would be compatible with the Sweetwater Reservoir URDS. SWA also requested that a notification system be in place to warn SWA should contaminated releases occur on the site, and that the use of groundwater or reclaimed water for irrigation be prohibited for this project. Additionally, SWA requested access to the proposed wetlands site to obtain water quality data on the effectiveness of the wetland.

In December 2000, the San Diego County Planning and Environmental Review Board approved a commercial subdivision and major use permit for the industrial park. The developer entered into an agreement with SWA to guarantee compliance with SWA Resolution 84-8 and to allow access to open space within the site. The parties are in the process of arranging a site visit to initiate a sampling program to verify the effectiveness of an onsite wetland in meeting the standards established by the Regional Board.

Expansion of Existing Texaco Station

In 2000, SWA was notified of the expansion of an existing Texaco gas station in conjunction with the redevelopment of an existing shopping center. The project site is located approximately 0.9 miles northeasterly of Sweetwater Reservoir. In 2002, modifications were proposed which included additional fuel dispensers. SWA requested that the owner establish a procedure to provide direct notification to the SWA’s 24-hour emergency telephone number should a fuel spill or tank failure occur. SWA also

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County of San Diego DPLU did not include the conditions requested by Sweetwater. An additional underground storage tank was installed in 2002. SWA provided a letter to the owner requesting additional protections for the tank, and while the owner verbally agreed to some mitigation measures, he did not provide any documentation that the mitigation measures were implemented.

Starco Food Mart and Fuel Sales

In 2006, SWA received notification of the Starco Food Mart and Fuel Sales project, a proposed development which includes the construction of a 1,664 square foot food mart and deli building, four multi-product fueling dispensers, three underground storage tanks, and parking. The 0.55 acre site is currently vacant and is located less than 0.5 miles from the Sweetwater Reservoir. SWA commented that use of the site as a fueling center may impact surface and groundwater. SWA also commented that the environmental document for the project should include a Water Quality/Water Resources analysis, a Source Water Protection Assessment, a drainage study, complete information regarding underground gasoline storage tank permitting requirements, and safeguards that will be implemented to protect SWA from surface fuel spills. SWA requested a copy of the Storm Water Management Plan, and requested that the owner establish a procedure to provide direct notification to the SWA’s 24-hour emergency telephone number should a fuel spill or tank failure occur.

SWA staff met with the applicant in March 2007 to discuss the need to protect Sweetwater Reservoir from impacts that may result from future use of the property as a fueling center.

Willow Glen Corners

In 1997, SWA requested that County of San Diego DPLU eliminate further consideration of the placement of a gas station on the Rancho San Diego site because of its proximity to the Sweetwater River.

SWA meet with the Willow Glen Corners owner and consultants, where the Willow Glen Corners team assured the SWA that any technological means necessary would be implemented to protect the Sweetwater River and Sweetwater Reservoir. County of San Diego DPLU approved plans for development of the site without the gas station component, and the modified project is currently under construction.

It is recommended that the SWA continue to review and track developments within the watershed. In order to protect the source water quality of the Sweetwater River , the SWA should continue to provide comment letters to the County of San Diego on developments that could cause impacts to surface water and/or groundwater from high risk or very high risk PCAs.

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Summary of Findings for Proposed Highways and Other Developments

• There are a variety of commercial, industrial and residential developments occurring in the watershed that may impact source water quality.

• The three golf courses in the watershed are of primary concern due to the use of pesticides and their proximity to the Sweetwater River. The Sweetwater River runs directly through the Sycuan and Cottonwood golf courses.

• Commonly used chemicals at the golf courses are USEPA toxicity category III or IV, indicating slightly toxic to practically non-toxic, respectively.

• The 1995 Watershed Sanitary Survey recommended sampling of the most downstream well at each golf course for pesticides once every two years during or after a rainstorm. Evaluation of SOC data over the reporting period and investigation of current chemical use at golf courses does not warrant sampling every two years. Sampling could be reduced to every five years, if at all, for informational purposes.

• It is recommended that the SWA continue to review and track developments within the watershed. In order to protect the source water quality of the Sweetwater River , the SWA should continue to provide comment letters to the County of San Diego on developments that could cause impacts to surface water and/or groundwater from high risk or very high risk PCAs.

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HOMELESS ENCAMPMENTS

Background

It is suspected that there is a continuous, though shifting, population of homeless people and illegal encampments within the Sweetwater Reservoir watershed. The illegal camps become littered with debris, garbage, and sewage.

Seasonal Patterns

This is a storm source with the principal concern being wash off caused by rain runoff that may pick up waste and associated contaminants from the camps.

Occurrence in Watershed

According to the U.S. Fish and Wildlife Service San Diego National Wildlife Refuge Manager, the presence of homeless individuals has been an on-going issue since at least 2002 (Personal Communication, Don Bruebaker, USFWS, Refuge Manager). Fortunately, the number of homeless individuals is small, generally one to two individuals found at one location at any given time. Although there have been encampments with more individuals, this has occurred only on rare occasions.

In the fall of 2006, a large homeless encampment was discovered in the riparian area under the Steele Canyon Bridge (near the intersection of Campo Road and Singer Lane). It is estimated that 20 to 30 people were living there for an unknown amount of time.

Related Water Quality Issues and Data Review

Illegal camps are of potential concern as a source of fecal waste. Additionally, there are body contact concerns from bathing in the Sweetwater River.

Overall, there have been very few detects of Cryptosporidium or Giardia in the Sweetwater Reservoir. Samples collected from October 2002 to September 2006 show 1 Giardia cyst and 5 Cryptosporidium oocysts detected over this time period which spans nearly four years. The Cryptosporidium detects occurred in September 2003, July 2004, July 2005, and August 2005. These detects may be attributed to homeless encampments, as well as equestrian trails in the watershed, and poor manure management practices of equestrian facilities. If releases from Loveland Reservcir had recently occurred, body-contact recreation may also be attributable.

Regulation and Management

Management consists of local efforts only; there is no particular state regulatory program with respect to pollution control. The U.S. Fish and Wildlife Service stated that

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Source Water Protection Activities

SWA worked in conjunction with the U.S. Fish and Wildlife Service and the Sheriff’s Department to clear the encampment found in the fall of 2006.

The U.S. Fish and Wildlife Service is developing a Comprehensive Conservation Plan (CCP) for the San Diego Wildlife Refuge. Public scoping began in May 2006. The purpose of the scoping process is to identify potential issues concerning the array of wildlife, plants, and habitats on the refuge, day-to-day refuge management and operations, interaction with neighbors, and public use of the refuge. The SWA should encourage the U.S. Fish and Wildlife Service to address the homeless encampment issue within their CCP.

It is recommended that the SWA should coordinate with other stakeholders in the watershed to develop a strategy to deal with homeless encampments that may affect water quality. Occupant relocation, site clean up, and monitoring to preclude reoccurring camps, among other items should be addressed.

Summary of Findings for Homeless Encampments

• The presence of homeless individuals in the San Diego Wildlife Refuge has been an ongoing issue since at least 2002.

• In the fall of 2006, SWA worked in conjunction with the U.S. Fish and Wildlife Service and the Sheriff’s Department to clear a large encampment near the Steele Canyon Bridge.

• It is recommended that the SWA should coordinate with other stakeholders in the watershed to develop a strategy to deal with homeless encampments that may affect water quality. Occupant relocation, site clean up, and monitoring to preclude reoccurring camps, among other items should be addressed.

• The SWA should encourage the U.S. Fish and Wildlife Service to address the homeless encampment issue within their CCP.

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AGRICULTURE

Background

There are a variety of agricultural-related activities within the watershed including commercial equestrian facilities, crops, nurseries, and one poultry ranch.

Seasonal Patterns

Agricultural operations are most likely to impact source water quality during and after storms because runoff can carry manure, sediment, and pesticide residuals into surface waters.

Related Constituents

Horse waste including manure, urine, and soiled bedding can carry pathogens, nutrients, and oxygen-demanding substances.

Giardia and Cryptosporidium can infect equines but have not been found at significant levels (<9% prevalence) based on several studies done in the United States and Poland. A 1997 pilot study demonstrated that none of 91 horses used for backcountry recreation in California were positive for Cryptosporidium parvum or Giardia duodenalis (Johnson, 1997). A 1998 survey on trail horses utilizing public trails in Colorado found that 0.3% had detectable concentrations of Cryptosporidium parvum, and 0.7% had detectable concentrations of Giardia (Forde, 1998). Fecal specimens from 305 horses and mules used as packstock were examined for Cryptosporidium parvum (Atwill, 1996). Although 4.6% (14/305) of packstock were shedding Giardia duodenalis cysts, none of the horses had detectable Cryptosporidium parvum oocysts. A study conducted in Poland found that the prevalence of Cryptosporidium infection in horses was 9.4% (Majewska, 1999).

Nurseries and agricultural crops can impact water quality through their use of fertilizers and pesticides.

Occurrence in Watershed

Equestrian Facilities

There are four equestrian facilities within the watershed, as shown in Figure 4-21. Bright Valley Farms is located at 12310 Campo Road in Rancho San Diego, about a half mile from the Sweetwater River. Bright Valley Farms indicated that they have about 170 horses on-site. There are corrals, pastures, stables, rings, and 800 acres of trails. The trails are part of a historic trail system of the San Diego National Wildlife Refuge, owned by the U.S. Fish and Wildlife Service. The U.S. Fish and Wildlife Service indicated that manure is not removed from the trails on a regular basis (Personal Communication, Don Bruebaker, USFWS).

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The 1995 Watershed Sanitary Survey indicated that the Bright Valley Farm horses cross the Sweetwater River twice each day. This occurred when Bright Valley Farms was located on either side of the Sweetwater River. Horses continue to cross the river during trail rides, as there is a regularly used trail that crosses under the Old Bridge.

Manure is collected twice a week in the pasture area and daily in the corrals. Manure is hauled to the northwest side of the property where it is composted, mixed with mulch and sold as topsoil. Hay bales and silk fencing are in place to prevent erosion from the site.

Willow Glen Equestrian Center is a 17-acre boarding property located at 2017 Willow Glen Drive in El Cajon. The center is designed for training and showing horses, and the facility also conducts trail rides. It is unknown if the trail rides are in close proximity to the Sweetwater River. There are 150 horses on-site. Since 2006, manure is collected regularly by a topsoil maker.

Spicer Sandy Creek Ranch is located at 5739 Stallion Oaks Road in El Cajon. There are approximately 10 horses on-site.

Pepperock Farm is a 3-acre facility, located at 12570 Old Campo Road in Spring Valley, providing boarding and riding lessons to the public. There are approximately 15 horses on-site, and they do not conduct trail rides in the watershed. Manure is not transferred to a storage area but is picked-up directly from a waste hauler every two weeks.

California State Parks is proposing to construct a horse camp at Merigan Ranch, near Descanso in the Loveland Reservoir watershed. Parking for horse trailers would be installed at the northern end of the Cuyamaca Rancho State Park, outside of the watershed. The Merigan camp would have 18 to 20 campsites, with two horses allowed at each spot. Equestrians could stay overnight, with corrals provided for their horses. With project approval, construction would begin in summer 2009.

Poultry Farms

One poultry farm identified in the 1995 Watershed Sanitary Survey has been closed; the ranch on Willow Glen Drive near Hillsdale Road was developed into a residential subdivision. Hooper’s Egg Ranch on Fuerte Drive is currently proposed for residential use but is still active as a poultry ranch.

There are no dairies in the watershed.

Crops and Nurseries

There are limited areas used for crops within the watershed, as shown in Figure 4-22. According to the San Diego County AWM, the highest acreage within the watershed is

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in the Alpine area, with 500 acres. The crops grown are oats, grapes, avocados, and rye. Nursery stock and palm trees are also grown.

The second largest agricultural area is in Jamul, with 300 acres of oats, and 2 acres each of grapes, palm trees, and avocados.

Thirteen acres of olives and 16 acres of oats are grown in Dehesa, and there is one oat grower in Descanso.

No agricultural areas were identified in Harbison Canyon, Jamacha, Crest, Spring Valley or El Cajon. However, numerous nurseries are located in El Cajon, particularly along Jamacha Road. Table 4-18 is a list of commercial nurseries located in the watershed.

Table 4-18 Commercial Nurseries Located in the Sweetwater Watershed

Facility Address City Evergreen Nursery 2657 Sweetwater Springs Spring Valley Blvd. Rancho Valhalla Nursery 1998 E. Chase Ave., #A El Cajon Rancho Growers 2031 Jamacha Rd. El Cajon Hummell Farms 2005 Jamacha Rd. El Cajon Medina Greenhouse 1923 Jamacha Rd. El Cajon Grower San Diego Nursery Outlet 1919 Jamacha Rd. El Cajon Center Transplant Growers 1925 Jamacha Rd. El Cajon Jamul Country Gardens 13034 Campo Rd. Jamul Simpson’s Gardentown 13925 Highway 94 Jamul Nursery Van Winkle Tree Farm 16334 Wood Valley Trail Jamul Wood Valley Palms 16061 Wood Valley Trail Jamul Grandpa’s Mountain 9163 Riverside Dr. Descanso Nursery Source: SWA files and Jurisdictional Urban Runoff Management Program, County of San Diego, 2005- 2006 Annual Report

Related Water Quality Issues and Data Review

No VOCs or SOCs were detected above the drinking water DLRs for the Sweetwater Reservoir. As mentioned earlier, there have been very few detects of Cryptosporidium or Giardia in the source water. Samples collected from October 2002 to September 2006 show 1 Giardia cyst and 5 Cryptosporidium oocysts detected over this near four- year time period. The Cryptosporidium detects occurred in September 2003, July 2004, July 2005, and August 2005. Historical poor manure management practices at the

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Willow Glen Equestrian Facility (see subsection below), as well as a regularly-used equestrian trail that crosses the Sweetwater River may have been a source of Cryptosporidium.

Regulation and Management

Agricultural activities are regulated by various agencies. Dairies and concentrated animal operations are regulated by the Regional Board. Since 2001, the San Diego County AWM Agricultural Water Quality Program is responsible for overseeing stormwater compliance at agricultural businesses that are classified as high priority commercial sites. These include golf courses, nurseries and greenhouses, equestrian facilities, and pest control businesses. The San Diego County AWM initiated inspections of equestrian facilities in July 2005 in response to the large number of complaints and referrals the department received as a result of the heavy rains during the winter of 2005. Program staff visits over 200 sites each year as part of an ongoing inspection and referral program.

The County of San Diego Watershed Protection, Stormwater Management and Discharge Control Ordinance also requires specific minimum BMPs for commercial agricultural operations. The ordinance specifies the following for manure management:

• Where practicable, all runoff from areas where livestock, horses or other large animals are confined must be collected and managed in a manner that avoids a discharge to the stormwater conveyance system or receiving waters. Where this is not practicable, manure must be cleaned up at least twice weekly; and must either be composted, or stored prior to disposal. • Areas used for storing or composting manure must be located, configured or managed to prevent runoff to receiving waters or the stormwater conveyance system. • Animal waste shall not be disposed to the stormwater conveyance system or receiving waters.

Water quality inspection records were requested for all of the equestrian facilities and golf courses for reports of noncompliance from the San Diego County AWM Agricultural Water Quality Program. No inspection records could be found for Spicer Sandy Creek Ranch and Pepperock Farm. Since inspection of equestrian facilities is initiated through referral, these sites may not have been inspected.

The Willow Glen Equestrian Center was found noncompliant in 2004 as piles of horse manure were found adjacent to the Sweetwater River. A substantial amount of dried horse manure was buried in the same area. The Willow Glen Equestrian Center received a written notice that burying manure was not an acceptable practice. The facility was also notified that manure must be disposed of by a commercial hauler or a waste management program must be implemented to prevent runoff, and that horse waste must be relocated to a site away from the Sweetwater River. When the site was re-inspected in March 2006, manure had been regularly collected and dumped on three

Sweetwater and Loveland Reservoirs Watershed Sanitary Survey Page 4-69 First Update – Final Report SECTION 4 – WATERSHED CONTAMINANT SOURCES REVIEW roll up containers which were picked up weekly by a topsoil maker. The site was inspected again in December 2006, and two old vehicles, scrap metals, and green waste were found along the bank of the Sweetwater River. The owner received written notification that these materials needed to be removed.

Bright Valley Farms was found non-compliant in 2005 as a stormwater drain inlet located at the topsoil processing area did not have sufficient protection to filter out pollutants and prevent contaminated water from leaving the property. The facility was also informed that the pasture area should be bermed prior to the rainy season in order to keep sediment and manure debris in place. The site was reinspected in January 2007,and all earlier issues were brought into compliance.

Source Water Protection Activities

In addition to inspecting facilities, the San Diego County AWM Agricultural Water Quality program provides educational outreach to operators of agricultural and related facilities. For example, a brochure on Water Quality Best Management Practices for Equestrian Facilities was developed. The program’s educational efforts have resulted in greater regional awareness of water quality issues.

The U.S. Fish and Wildlife Service are developing a Comprehensive Conservation Plan (CCP) for the San Diego Wildlife Refuge. Public scoping began in May 2006. The purpose of the scoping process is to identify potential issues concerning the array of wildlife, plants, and habitats on the refuge, day-to-day refuge management and operations, interaction with neighbors, and public use of the refuge.

Future trail management for the San Diego Wildlife Refuge will be addressed in the CCP, particularly in regard to equestrian use. Plans are in place to actively manage equestrian use of the trails. Due to the proximity of the Sweetwater Reservoir to the Refuge, and the currently unmanaged equestrian trails used by commercial equestrian facilities, it is recommended that the SWA encourage the U.S. Fish and Wildlife Service to address use of San Diego Wildlife Refuge trails by equestrians in the CCP.

Summary of Findings for Agriculture

• There are four equestrian facilities in the Sweetwater watershed, the two largest facilities have 150 to 170 horses on-site.

• There are no active dairies within the watershed. There is one poultry ranch on Fuerte Drive in the Sweetwater Reservoir watershed.

• There are limited crop areas within the watershed; the largest acreage was 500 acres in Alpine.

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• It appears that the inspection of equestrian facilities by the County of San Diego, Department of AWM Agricultural Water Quality Program is directly preventing contamination of the Sweetwater River.

• It is recommended that the SWA write the County of San Diego, Department of AWM Agricultural Water Quality program a letter to acknowledge their efforts to protect the Sweetwater River from contamination from equestrian facilities and to maintain good repertoire between agencies.

• Due to the proximity of the Sweetwater Reservoir to the Refuge, and the currently unmanaged equestrian trails used by commercial equestrian facilities, it is recommended that the SWA encourage the U.S. Fish and Wildlife Service to address use of San Diego Wildlife Refuge trails by equestrians in the CCP.

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FIRES

Background

The aftermath of a wildfire or prescribed burn can alter source water quality. In general, the load of dissolved substances to streams will increase following a wildfire, due to increased runoff. Increased runoff can occur following a fire because the formation of a hydrophobic organic layer in the soil increases the water repellency of soils (DeBano, 2000). A recent USGS study has revealed that measurable effects of fires on streamwater quality are most likely to occur if the fire was severe enough to burn large amounts of organic matter, if windy conditions were present during the fire, if heavy rain occurred following the fire, and if the fire occurred in a watershed with steep slopes and soils with little cation-exchange capacity (USGS, 2004).

Seasonal Patterns

In the literature reviewed, many of the highest nitrate concentrations in streams and rivers have been measured during storms in the weeks to months following a fire. In general, elevated concentrations of phosphorus decline one to two years post-fire, while the elevated concentrations of nitrogen, particularly nitrate, decline at a slower rate, three to five years post-fire.

Related Constituents

The magnitude of the effects of fire on water quality is dependent on how fire characteristics (frequency, intensity, duration, and spatial extent of burning) interact with watershed characteristics (weather, slope, soil type, geology, land use, timing of regrowth of vegetation, and burn history). This interaction is complex and highly variable so that even fires in the same watershed can burn with different characteristics and produce variable effects on water quality. Typically, stormwater runoff from burned forested areas contains high concentrations of phosphorus, nitrogen, dissolved organic carbon, sediment, and metals such as mercury, lead, and arsenic.

Occurrence in Watershed

Viejas Fire

The Viejas Fire started on January 3, 2001 and was contained on January 8, 2001. The Viejas Fire burned 10,353 acres, entirely within the Upper Sweetwater River watershed, as shown in Figure 4-23. Due to extremely high wind conditions, the fire spread rapidly within the burn area and reached its final perimeter lines within just two days. Out of the 10,353 acres, 7,797 burned moderate and 2,583 acres burned low.

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Cedar Fire

The Cedar Fire started on October 26, 2003 and was contained on November 5, 2003. The Cedar Fire burned 280,278 acres, of which 38,390 acres were within the Upper Sweetwater watershed, as shown in Figure 4-23. The majority of the Upper Sweetwater watershed was burned. The fire impacted the communities of Alpine, Harbison Canyon, and Crest which are located in the watershed, and burned hundreds of homes.

The Burned Area Emergency Response (BAER) report on the Cedar Fire stated that the main consequences of the fire will likely be on lives and property downstream, and on water quality from debris flow potential and erosion.

Related Water Quality Issues and Data Review

After a fire has occurred, the natural vegetation on hillsides is denuded. Therefore, increased erosion of soils is expected to occur during the first rains immediately following a fire. Additionally, a fire can cause the soils to become hydrophobic.

Viejas Fire

Because the Viejas Fire moved quickly, the vegetation and soils were not subjected to high temperatures which increase both plant and seed mortality. Based on the BAER assessment, natural vegetation was expected to recover within three years without any treatment.

Total estimated sediment yield from the entire watershed was calculated to be 2,750 cubic yards/square mile for the first year, compared to a background level of 1,525 cubic yards/square mile (Soil, Water, and Geology, BAER report, 2001). The watershed below the Loveland Dam was considered to be unaffected by the fire (in calculating increased flow and sediment yield), as the Loveland Reservoir is expected to retain all the flood flows and sediment that might be carried into it from the burned area.

Due to the low water level in Loveland Reservoir in 2001 (20% capacity), SWA was not taking water from Loveland Reservoir at the time of the fire and did not take water from Loveland until 2005. Therefore, there were no immediate impacts to water quality from the Viejas Fire.

Cedar Fire

A watershed assessment was conducted on U.S. Forest Service lands affected by the Cedar Fire. Rock fragments on the soil surface were considered as the only effective ground cover. The bare soil was expected to be reduced to 15 to 40 percent within the first year following natural vegetation canopy recovery (Soils Specialist Report, 2003). Depending on rainfall amounts, it was predicted to take four to five years before the

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vegetative cover would recover to pre-burn condition. Total estimated sediment yield from the entire watershed was calculated to be 634 cubic yards/square mile for the first year (Burned Area Report, USDA Forest Service, FS-2500-8), which is less than the sediment yield from the Viejas Fire.

From October 2003 to October 2004, San Diego County experienced the driest period in recorded history with approximately 180 days of no rain. From October 2004 to March 2005, San Diego County received over 21 inches of rain. This most likely delayed impacts to the Sweetwater River from the fire.

The first Loveland release after both the Viejas and Cedar fires occurred in February 2005. Figure 4-24 shows TOC levels in Sweetwater Reservoir from 1996 to 2006. There is an increase in TOC which occurred in February 2005, likely due to the release of fire-impacted water from Loveland as well as natural organic debris swept from the Sweetwater River channel as water traveled from Loveland to Sweetwater Reservoir.

Figure 4-24 Historical TOC in Sweetwater Reservoir, 1996 - 2006

9.00 8.00 7.00 6.00 5.00 4.00

TOC,3.00 mg/L 2.00 1.00 0.00

Date

Regulation and Management

Wildland fires in the Sweetwater watershed are managed cooperatively by the following agencies: U.S. Forest Service, California Department of Forestry and Fire Protection, California Highway Patrol, the San Diego County Sheriff’s Department, and the respective local fire agencies.

The use of approved long-term retardants in wildland fire suppression is standard in fire management and planning. The retardants are most often delivered in fixed or rotor- wing aircraft. A current list of qualified products and approved uses is listed on the U.S. Forest Service Wildland Fire Chemical Systems website (http://www.fs.fed.us/rm/fire). According to the U.S. Forest Service, the fire retardant commonly used is Phos-Check.

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The use of fire retardants can impact water quality if chemicals are accidentally dropped into a water body, or if heavy rains occur before the product has had time to naturally degrade.

The National Interagency Fire Center has developed Interagency Standards for Fire and Fire Aviation Operations which are annually revised. The Interagency Standards for Fire and Fire Aviation Operations states, references, or supplements policy for U.S. Bureau of Land Management, the U.S. Forest Service, the U.S. Fish and Wildlife Service, and the National Park Service. Regarding the use of fire retardants, the Aerial Application Guidelines are to “avoid aerial or ground application of retardant or foam within 300 feet of waterways.” (http://www.fire.blm.gov/Standards/redbook.htm)

Source Water Protection Activities

Viejas Fire

Preventative hillslope and in-channel control treatments in the upper watershed were considered by the BAER team. However, effectiveness of all potential treatments in the upper watershed was considered extremely low due to steep slopes, shallow rocky soils, climatic variables, and inaccessibility. Treatments considered but eliminated included seeding, check-dams, mulching, large area coverage of silt fences or wattles, and debris flow retention basins.

Cedar Fire

Although a variety of actions were taken to mitigate the post-fire impacts of the Cedar Fire, only some directly benefited the Sweetwater watershed:

• Information from the BAER survey team was dispersed to local officials engaged in local emergency watershed protection and residential sites to provide a coordinated approach for property protection and identification of hazard areas.

• Road drainage treatments were performed to reduce the risk to water quality from loss of control of water.

It is recommended that the SWA continue to participate in BAER meetings whenever a fire occurs in the watershed.

Summary of Findings for Fires

• There were two major wildfires occurring in the Sweetwater watershed; the Viejas Fire of 2001 and the Cedar Fire of 2003.

• Water quality was not immediately impacted since fire-impacted water was not released from Loveland Reservoir from February 2000 to January 2005. The first release of fire-impacted water from Loveland occurred in February 2005.

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• TOC levels in Sweetwater Reservoir increased significantly in February 2005, likely due to the release of fire-impacted water from Loveland and the natural organic debris swept from the Sweetwater River channel as water traveled from Loveland to Sweetwater Reservoir.

• It is recommended to obtain watershed information from the BAER team whenever there is a fire within the Sweetwater watershed.

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Dulzura C A INDIAN RE SECTION 5 –INTAKE EVALUATION

The purpose of this section is to (1) evaluate the Robert A. Perdue Water Treatment Plant (Perdue WTP) for compliance with existing drinking water regulations, and (2) identify potential treatment concerns related to future drinking water regulations. For assistance with abbreviations and acronyms, the reader is referred to the List of Abbreviations at the front of the Report.

Currently, the Sweetwater Authority’s (SWA) Perdue WTP uses the Sweetwater Reservoir source water at various times throughout the year. This plant is discussed herein within the context of applicable current and future regulatory compliance and potential treatment issues.

Data which represents the Sweetwater Reservoir was extracted for the evaluation to assess the compliance of the Perdue WTP when using this source water.

Highlights of Selected Existing Drinking Water Regulations

National Interim Primary Drinking Water Regulations (NIPDWR) and Phase I, II, and V Regulations. Sets Maximum Contaminant Levels (MCLs) for many inorganic chemicals (IOCs), Synthetic Organic Compounds (SOCs), and Volatile Organic Compounds (VOCs).

Surface Water Treatment Rule (SWTR). Sets minimum 3/ and 4/- log reduction requirements for Giardia and viruses, respectively. Set treated water turbidity requirements, which have since been tightened.

Interim Enhanced SWTR (IESWTR). Sets minimum 2-log reduction requirement for Cryptosporidium. Requires monthly source water monitoring for coliforms. Requires continuous monitoring of individual filter effluents (IFE) and combined filter effluent (CFE). Tightened treated water turbidity requirements: CFE < 0.3 NTU in 95 percent of samples, and not to exceed 1 NTU longer than 1 hour. Set IFE reporting and evaluation requirements.

Stage 1 Disinfectants/Disinfection By-Products (D/DBP) Rule. Sets a treatment technology for DBP precursor removal (enhanced coagulation) based on source water total organic carbon (TOC) levels. Varying levels of removal are required if the source water concentrations are > 2 mg/L. Sets MCLs for total Trihalomethanes (TTHMs) and Haloacetic Acids (HAA5) at 80/60 ug/L, respectively in distribution system as system-wide running annual average (RAA).

Long Term 2 Enhanced SWTR (LT2ESWTR). Requires Cryptosporidium, or E. coli source water monitoring depending on system size. Source water bin classification to be dependent on monitoring results. If average Cryptosporidium value is > 0.075 oocysts/L, bin classification will require additional action (which could be additional log reductions or other actions, including source water protection). Also requires disinfection profiling and benchmarking if monitoring for Cryptosporidium. A second round of source water monitoring will be conducted again, six years after initial bin classification.

Stage 2 D/DBP Rule. Requires compliance with distribution system MCLs for TTHM and HAA5 to be based on locational running annual average (LRAA). The Stage 2 compliance is based on LRAA of 80/60 ug/L. Initial Distribution System Evaluations must be completed to identify long term monitoring locations. Compliance schedules will depend on system size and source type. For combined distributions systems, all systems will be on schedule of earliest system.

Highlights of Selected Future Drinking Water Regulations

Arsenic. Arsenic has a current MCL of 10 mg/L. The California Department of Public Health (CDPH) is required to revise the state MCL, which may result in a lower level than the current federal MCL.

Hexavalent Chromium. Hexavalent chromium is not currently regulated. The CDPH is developing a state MCL for hexavalent chromium.

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PERDUE WATER TREATMENT PLANT

This section evaluates the existing SWA Perdue WTP.

System Description

The SWA owns and operates the Perdue WTP. The plant can treat either Sweetwater Reservoir water, imported water, or a blend. The source water used depends on local water availability, but typically the Sweetwater Reservoir is utilized from late winter or early spring through late fall or early winter. This evaluation focuses on data that represents the Sweetwater Reservoir source.

The Sweetwater Reservoir is fed water from several sources, as described in more detail in Section 2. The sources include the Middle Sweetwater River, local drainage, as well as imported water.

The Middle Sweetwater River feeds the east end of the reservoir. The Middle Sweetwater River is comprised of releases from the Loveland Reservoir as well as local runoff between the reservoirs. The local runoff includes a significant contribution from urban runoff. Local drainage into the Sweetwater Reservoir is comprised of urban runoff from the north side of the reservoir and overland flow from the undeveloped south side of the reservoir. The SWA began the Phase I URDS in July 1991 to allow for capture and diversion of the urban runoff from the north side of the reservoir, and eventually around the dam and to the Lower Sweetwater River.

The SWA began operation of the Phase II Urban Runoff Diversion System (URDS) in June 2005. This results in flows from the Middle Sweetwater River being diverted into the URDS collection system at the Low Flow Barrier when the conductivity is greater than 1200 µohms, which occurs most frequently during the dry season but can occur throughout the year. This diversion amount is limited to 50 cubic feet per second (cfs), but this covers the current flow regime. The URDS collection system diverts water around the Sweetwater Reservoir to the Lower Sweetwater River below the dam.

During the study period there has also been a significant amount of raw, untreated imported water stored in the Sweetwater Reservoir. This water is typically stored during the wet period, December through March, but during extended dry periods, from 2001 through 2004, the water was stored for longer periods of time.

Manually operated valves are used to control the depth at which water is withdrawn from the Sweetwater Reservoir. The valves are located at elevations of 188, 198, 208, and 223 feet. Water is withdrawn from the reservoir at the elevation with the highest quality water. Typically the best quality is at the lake surface.

The Perdue WTP is a conventional filtration plant. It consists of chemical treatment, chemical mixing using pumped diffusion, flocculation and sedimentation through

Sweetwater and Loveland Reservoirs Watershed Sanitary Survey Page 5-2 First Update – Final Report SECTION 5 –INTAKE EVALUATION conventional horizontal-flow rectangular basins, and dual-media filters. The plant was originally designed for a capacity of 30 million gallons per day (mgd).

Under normal operations chlorine dioxide, around 1.8 milligrams per liter (mg/L), is added to the intake tower. A chlorine dioxide residual is maintained through the influent pipelines and raw water pump station up to the flash mixing process. Ferric chloride, the primary coagulant, is added either at the flash mixer or immediately downstream of the raw water pump station. The dose is typically in the range of 20 to 24 mg/L. Ferrous chloride is added at the flash mixer to reduce chlorite levels. Sludge is removed from the two sedimentation basins by a single traveling bridge equipped with separate suction headers. The sludge removal system is operated twice each day with one pass of the basin at each time. Sludge is discharged through an 8-inch gravity line into the Sweetwater Reservoir at the high water elevation of about 240 and about 800 feet from the reservoir outlet tower.

The filtration process consists of four, dual-media, rate-of-flow control filters. The filters are operated at a maximum rate of 6 gallons per minute per square foot (gpm/sf). Filters are backwashed based on headloss greater than 10 feet. During times of severe taste and odor episodes from plankton in the reservoir, free chlorine can be applied across the filters. The filters are backwashed with filtered water stored in an elevated tank. Used washwater drains through a 36-inch pipeline into Sweetwater Reservoir. The water is released through a concrete dispersion box located on the north shore of the reservoir approximately 220 feet from the intake tower and at an elevation of 235. The filters are then filtered to waste until the filter effluent turbidity is less than 0.2 nephelometric turbidity units (NTU).

The post-disinfection process utilizes chloramines to meet the chlorine contact requirements for Giardia and virus reduction.

Highlight of Changes Since 1995 Update

In 1997 the SWA installed a baffle wall in the 10 million gallon clearwell to improve the disinfection contact time. In 2000 the Perdue WTP was equipped with a Systems Control and Data Acquisition (SCADA) system and an additional washwater tank was installed. In May 2004, there was a major change at the plant when the primary disinfectant was converted to chlorine dioxide to reduce the level of disinfection by- products in the treated water.

Significant Potential Contaminating Activities

As identified in Section 4, there are several key potential contaminating activities that are of the most significance to the Perdue WTP due to their proximity to the Sweetwater Reservoir, the magnitude of their presence, and their apparent impact on source water quality. These include:

• Urban Runoff,

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• Agricultural activities such as golf courses and equestrian facilities, • Landfills, and • Spills associated with sewage or hazardous materials.

Water Quality Summary

Below is a discussion of each of the constituents of interest and any notable compliance issues for each during the period of study.

Turbidity

Figure 5-1 shows a timeseries plot of the average monthly peak daily raw, settled and treated water turbidity. From this figure it can be seen that the raw water turbidity varies throughout the year and that the settled water turbidity is typically lower, following the same trend. The figure also shows that regardless of the applied settled water turbidity, the filters perform consistently well to keep the treated water turbidity levels well below the current standards.

No data for the individual filter effluent (IFE) turbidity was reviewed so it could not be determined if any of the reporting trigger levels under the upcoming CDPH Interim Enhanced Surface Water Treatment Rule would be exceeded.

Microbiological Constituent Review

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Figure 5-1 Maximum Daily Turbidity at the Perdue WTP

100 Raw Daily Max Settled Daily max CFE Daily Max

1 Turbidity, NTU Turbidity,

0.1

0.01

6 97 98 01 02 04 05 999 000 002 /199 /1996 /1997 /19 /1998 /19 /1 /1999 /2 /2000 /20 /2001 /20 /2 /2003 /2003 /20 /2005 /20 /2006 /2006 1 /1 1 /1 1 /1 /1 1 1/1 7/ 1/1 7/1 1 7/1 1/1 7/ 1/1 7 1/1 7/1 1/1 7/1 1/ 7 1/1/20047/1 1 7/1 1/1 7/

Date

Disinfection By-Products

The SWA monitors alkalinity and total organic carbon (TOC) levels in its raw water and TOC levels in its treated water on a monthly basis in order to determine treatment technique compliance under the Stage 1 Disinfectants/Disinfection By-Products Rule. From 2001 through 2005, the SWA was in compliance with the treatment technique requirements.

For the Sweetwater Reservoir, the raw water TOC level has ranged from 3.4 to 8.2 mg/L. The raw water has an average and median TOC value of 5.8 mg/L. For the CFE from the Perdue WTP, the TOC level has ranged from 1.7 to 6.9 mg/L. The CFE has an average TOC value of 4.2 mg/L and a median of 4.0 mg/L, with only 12 percent of samples less than or equal to 2.0 mg/L. When either source or treated water levels of TOC are less than 2 mg/L, no additional action is required for TOC removal. The Perdue WTP generally has raw and treated TOC levels greater than 2 mg/L, therefore the plant must meet the treatment technique for TOC removal. Compliance with the treatment technique is typically not met for the Step 1 removal requirements. The SWA makes compliance through an alternative compliance criteria; by meeting treated water specific ultraviolet light absorbance (SUVA) levels of less than 2.0 liters per milligram- meter (L/mg-m). SUVA is the calculation of ultraviolet light at 254 nanometers divided by dissolved organic carbon (DOC).

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The SWA has collected both total trihalomethanes (TTHM) and haloacetic acids (HAA5) data for its distribution system. As part of the Stage 1 Disinfectants/Disinfection Byproducts Rule the SWA samples 15 distribution system sites on a quarterly basis. For the Perdue WTP treated water in the distribution system, nine sites have been monitored for TTHM and HAA5 during the study period. Currently, there are seven sites monitored that are representative of Perdue WTP treated water. These sites were selected to represent average and maximum residence times in the distribution system from the Perdue WTP. Levels of disinfection by-products (DBPs) in the distribution system vary throughout the year due to source water used, variable disinfection practices, pH, temperature, and distribution system configuration and operations. Also, DBP levels changed significantly after May 2004 when the SWA began utilizing chlorine dioxide as its primary disinfectant.

Figure 5-2 shows the quarterly average of all distribution system sites for TTHM analysis. From this figure it can be seen that TTHM levels have dropped dramatically since 2000 and even more so since the second quarter of 2004. The peak values have been associated with use of the Sweetwater Reservoir source and typically occur in the second or third quarter and are likely associated with free chlorine application across the filters to combat taste and odor problems associated with plankton.

Table 5-1 Locational Running Annual Average TTHMs for Perdue WTP (µg/L) Max Max Post Average Average Post Overall May 2004 Overall May 2004 16th Street 84.9 45.9 44.2 29.9 Anita 50.3 49.7 35.7 32.3 Paseo De La Vista 96.1 49.0 54.7 33.6 Pray St 96.2 None After 2001 71.7 None After 2001 F St 89.8 43.1 51.6 29.4 I at Woodlawn 85.8 49.0 42.5 31.1 Lynwood 90.9 50.0 53.5 31.7 Newell 88.8 44.6 39.5 28.9 Plaza at Manchester 88.6 None After 2000 49.4 None After 2000

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Figure 5-2 Distribution System TTHM Quarterly Average of All Sites

40 TTHM, ug/L TTHM,

7 96 9 97 98 99 99 00 01 01 02 03 03 04 05 05 06 9 0 0 0 -19 -19 -1 -2 -2 -2 1 3-1996 1-19 3-19 1 3-1998 1-19 3 1-2000 3-20 1-20 3 1-2002 3-20 1-20 3 1-2004 3-20 1-20 3 1-2006 3-20 Quarter

Figure 5-3 Distribution System TTHM Locational Running Annual Averages For Sites Associated with Perdue WTP

120 Max Overall Max Post May 2004 Average Overall Average Post May 2004 100

60 TTHM LRAA, ug/L LRAA, TTHM 40

t n ll er ista S e t Anita V F ches Pray St ynwood New L n 16th Street t Ma I at Woodlaw Paseo De La Plaza a Site

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The HAA5 RAA of all distribution system sites ranged from 7.2 to 22.9 µg/L, with an average level of 13 µg/L and a median level of 12.6 µg/L during the study period, below the current MCL of 60 µg/L. When looking only at the data since implementation of chlorine dioxide, the RAA has not exceeded 22.9 µg/L and averages 18.3 µg/L. This increase in average HAA5 levels is caused primarily by two sample events, one in April 2005 (quarterly average HAA5 of 34 µg/L) and in August 2006 (quarterly average HAA5 of 46.8 µg/L). Both these times, free chlorine was applied across the filters to assist with severe taste and odor events caused by plankton in the Sweetwater Reservoir.

Figure 5-4 shows the quarterly average of all distribution system sites for HAA5 analysis. From this figure it can be seen that HAA5 levels have generally been low since 2000. The peak values have been associated with use of the Sweetwater Reservoir source and can occur throughout the year, but recently have occurred in the second or third quarter and are associated with free chlorine application across the filters to combat taste and odor problems associated with plankton.

Table 5-2 Locational Running Annual Average HAA5s for Perdue WTP (µg/L) Average Average Post May Max Overall Max Post May 2004 Overall 2004 16th Street 34.1 34.1 15.9 20.0 Anita 39.3 39.3 20.1 22.2 Paseo De La Vista 38.3 38.3 20.8 24.7 Pray St 23.9 None After 2001 18.5 None After 2001 F St 36.1 36.1 19.0 21.1 I at Woodlawn 33.6 33.6 19.2 21.7 Lynwood 34.6 34.6 20.3 20.8 Newell 25.0 25.0 16.8 19.2 Plaza at Manchester 22.4 None After 2000 19.3 None After 2000

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Figure 5-4 Distribution System HAA5 Quarterly Average of All Sites

25 HAA5, ug/L 20

9 9 9 9 0 0 0 0 1 1 1 1 2 2 2 2 3 3 3 3 4 4 4 4 5 5 5 5 6 6 6 6 9 9 9 9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 9 9 9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -1 -1 -1 -1 -2 -2 -2 -2 -2 -2 -2 -2 -2 -2 -2 -2 -2 -2 -2 -2 -2 -2 -2 -2 -2 -2 -2 -2 -2 -2 -2 -2 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 Quarter

Figure 5-5 Distribution System HAA5 Locational Running Annual Averages For Sites Associated with Perdue WTP

60 Max Overall Max Post May 2004 Average Overall 50 Average Post May 2004

40 L

30 HAA5 LRAA, ug/ LRAA, HAA5 20

0 r a t ll et wn e re a w ste Anit F St e St N th Pray S oodl nche 6 Lynwood a 1 W t M I at a Paseo De La Vista Plaza Site

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Volatile and Synthetic Organic Compounds

The SWA has monitored raw and treated water at Perdue WTP for VOCs and SOCs. There was a single detect of simazine in the Perdue WTP effluent in 1998 at 0.08 µg/L, well below the MCL of 4 µg/L. There was also a reported detect of N- nitrosodimethylamine (NDMA) in the Perdue WTP effluent in 2005, ranging from 7.1 to 11 nanograms per liter (ng/L), with an average of 9.4 ng/L. This average is below the current Notification Level of 10 ng/L. This is probably generated in the plant through the treatment process, not source derived.

The United States Geologic Survey (USGS) has also monitored the source and treated water as part of a special study related to the Route 125 construction. This monitoring utilizes detection limits lower than drinking water limits for reporting. This compiled data is presented in Appendix D. Please note that this compilation contains only a summary of the detected constituents. The most commonly detected constituents in the Perdue WTP effluent were various disinfection by-products, acetone, metolachlor, chloromethane, toluene, prometon, atrazine, simazine, 2,4-D, and diuron. All of the detected values were very low, well below their respective MCLs or Notification Levels.

Inorganics

The treated water samples analyzed for arsenic at the Perdue WTP ranged from non- detectable, less than 1 µg/L, to 4 µg/L with an average of 1 µg/L during the period of study (1996 through 2006). There were no detects (less than 1 µg/L) of hexavalent chromium in the Perdue WTP treated water during the period of study (1996 through 2006).

Iron and manganese have been monitored regularly in the treated water for compliance purposes. Iron ranges from non-detectable to 194 µg/L, with an average of 15 µg/L and a 95th percentile of 77 µg/L. Manganese ranges from non-detectable to 105 µg/L, with an average of 10 µg/L and a 95th percentile of 36 µg/L. There are numerous possible sources of iron and manganese in the source water, including natural sources from erosion, possible groundwater upwelling, the Jamacha Landfill, waste washwater recycling from the Perdue WTP, urban runoff, and in-lake re-suspension. Regardless, the Perdue WTP is very effective at reducing the treated water levels and there have been no exceedances of the secondary standards for either constituent.

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Minerals are monitored in several forms of interest, as total dissolved solids (TDS), conductivity, chloride, bromide, and sulfate. The Perdue WTP appears to remove some incidental amount of these constituents, but is not designed for substantial removal. Table 5-3 presents a summary of the mineral data for the Perdue WTP effluent. It can be seen that the treated water TDS levels generally exceed the secondary MCL recommended level set by CDPH of 500 mg/L, but are below the upper level for aesthetic purposes (1,000 mg/L). All other constituents meet the secondary MCL consumer acceptance contaminant levels.

Table 5-3 Mineral Levels for Perdue WTP Effluent (µg/L) Constituent Minimum Maximum Average TDS, mg/L 432 762 574 Conductivity, µohms 697 1,158 900 Chloride, mg/L 80 166 120 Bromide, mg/L ND 0.36 0.13 Sulfate, mg/L 66.6 266 158

Giardia/Virus/Cryptosporidium Reduction Requirements

Perdue WTP currently receives reduction credit for 2.5-log Giardia, 2.0-log viruses, and 2-log Cryptosporidium for physical removal. Disinfection with chlorine dioxide provides 0.5-log credit for Giardia and 2.0-log credit for viruses. This meets all of the current microbial removal/inactivation requirements of the SWTR and IESWTR.

Regulatory Compliance Evaluation

The SWA has been monitoring the raw and treated water for the Perdue WTP for all required Title 22 compliance constituents. Table 5-4 lists selected existing and expected future drinking water regulations and presents a compliance status for these standards at Perdue WTP. The SWA is currently in compliance with existing regulations and is expected to be in compliance with these future regulations. Since arsenic is found at levels below 5 µg/L and hexavalent chromium is non-detectable, it is assumed that they will not be a compliance issue.

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Table 5-4 Regulatory Compliance Evaluation Sweetwater Authority – Perdue WTP Targeted Compounds Key Issues Compliance Status Existing Regulations Phase I, II, and V IOCs, VOCs, SOCs Monitored as required. No MCLs exceeded. SWTR Microbial and Turbidity Data for the Sweetwater Reservoir supply continue to support 3/4—log reduction requirement for Giardia/viruses. All operations, monitoring and reporting requirements are met and all treated water turbidity standards are met. Interim Enhanced SWTR and Microbial and Turbidity All new turbidity standards met. 2-log Filter Backwash Rule reduction credit for Cryptosporidium applicable. No review of individual filter effluent turbidities. Stage 1 D/DBP Rule Disinfectants and TOC in the Sweetwater Reservoir supply Disinfection By-Products and treated water are typically above 2.0 mg/L. Perdue WTP utilizes treated water SUVA < 2.0 L/mg-m to comply with TOC treatment technique. TTHM/HAA5 RAAs at D/DBP Rule sites currently comply with drinking water standards (< 80/60 µg/L, respectively). Long Term 2 Enhanced SWTR Microbial Cryptosporidium data available indicates low or no presence of protozoa. Available fecal coliform data also support possible Bin 1 classification, which may mean no additional action required. Future source water Cryptosporidium monitoring under this rule will provide more information. Stage 2 D/DBP Rule Disinfectants and Current TTHM/HAA5 LRAAs for Stage 1 Disinfection By-Products data are below drinking water standards (< 80/60 µg/L, respectively). Implementation of chlorine dioxide in 2004 has resulted in significant decrease in TTHMs. Increases can be seen, especially for HAA5, during algal blooms when free chlorine is required to address taste and odor. IDSE plan is complete and a system specific study will be implemented in 2008 to evaluate potential DBP issues in the distribution system. Future Regulations State Arsenic MCL –2007* Arsenic All treated data below 4 µg/L. Compliance with federal MCL expected. State MCL uncertain, but not expected to be problematic. State Hexavalent Chromium MCL Hexavalent Chromium All intake and treated water data below –2007* detection limit, less than 1 µg/L. Compliance with future State MCL uncertain, but not expected to be problematic. * Expected date of promulgation

Sweetwater and Loveland Reservoirs Watershed Sanitary Survey Page 5-12 First Update – Final Report SECTION 6 – RECOMMENDATIONS

This section consists of a discussion of significant changes since the 1995 Watershed Sanitary Survey and a list of recommendations.

SIGNIFICANT CHANGES SINCE THE 1995 WATERSHED SANITARY SURVEY

• There has been little change over the last ten years regarding land use. The 1995 Watershed Sanitary Survey indicated that the Upper Sweetwater watershed was two percent urban and 98 percent rural, and the Middle Sweetwater watershed was 15 percent urban and 85 percent rural. Today, the Upper Sweetwater watershed is three percent urban and 97 percent rural, and the Middle Sweetwater watershed is 18 percent urban and 82 percent rural.

• Since the 1995 Watershed Sanitary Survey, the population has increased 25 percent, from 57,000 in 1990 to 64,767 in 2006 for both the Upper and Middle watersheds.

• The Robert A. Perdue Water Treatment Plant (Perdue WTP) added chlorine dioxide as the primary disinfectant in 2004, which was free chlorine previously.

• Taste and odor episodes have increased in the Sweetwater Reservoir, prompting monitoring of 2-methylisoborneol (MIB) and geosmin since 2005.

• Total organic carbon (TOC) has increased in Sweetwater Reservoir since early 2005, and levels remain higher than pre-2005 historical levels.

• Dry weather flows upstream of the Sweetwater Reservoir are now diverted when conductivity exceeds 1,200 microsiemens per centimeter (µS/cm), as the Low Flow Barrier portion of the Urban Runoff Diversion System (URDS) became operational in June 2005.

• A number of volatile organic compounds (VOCs) have been detected above their respective drinking water maximum contaminant levels (MCLs) in groundwater monitoring wells downgradient of the Viejas and Jamacha landfills.

• The Sweetwater Authority (SWA) opened the south shore of the Sweetwater Reservoir for fishing in 2004. Since 1997, the SWA began management of a shoreline fishing program at Loveland Reservoir.

• Stormwater regulations have become increasingly stringent since the 1995 Watershed Sanitary Survey. The San Diego Regional Water Quality Control Board (Regional Board) revised the Phase I municipal storm water permit for San Diego County in both 2001 and 2007. Some of the new requirements in the 2007 permit are: low-impact development best management practices (BMPs) required for new developments, treatment control BMP effectiveness required for new developments, and treatment control BMP maintenance tracking required. The County of San Diego, Department of Public Works will develop a database to

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track what BMPs are implemented at new developments to address stormwater runoff. It will also be required to identify priority pollutants at each site.

• In general, development continues to increase throughout the Middle and Upper Sweetwater watersheds. A shopping center in Rancho San Diego, expansion of an existing Texaco station, and a Young Men’s Christian Association (YMCA) facility with grass fields have been constructed since the 1995 Watershed Sanitary Survey in close proximity to either the Sweetwater River or Reservoir.

• Overall, the Sweetwater Reservoir provides acceptable quality raw water. The raw water can be treated to meet all drinking water standards using conventional treatment processes.

RECOMMENDATIONS

Table 6-1 presents the recommendations developed for this First Update, listed by subject area and not by priority. Development of recommendations for watershed management actions that are economically feasible and within the authority of the SWA is critical. Recommendations will be implemented by the SWA as resources are available.

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Table 6-1 First Update Recommendations Water Quality and Treatment Recommendation Basis for Recommendation 1) Continue to optimize treatment at Perdue WTP during Based on historical treatment challenges posed by source periods of potentially poor source water quality – i.e. adjust water quality, optimization is most likely to be important coagulant dose, optimize polymers, apply alternative during precipitation events, extended dry events, and oxidants, and ensure adequate CT. plankton blooms.

2) Continue raw water monitoring for total coliform and E. Frequent source water monitoring for microbials will assist coli at the intake, San Diego County Water Authority in identifying watershed-specific relationships to indicator imported water supply, Sweetwater River Influent, and organisms, as well as continue to verify the appropriate Loveland Reservoir. level of treatment for Giardia and viruses for the Perdue WTP. 3) Continue source water monitoring of Perdue WTP in This regulatory requirement will confirm the historical basis accordance with Long Term 2 Enhanced Surface Water for low protozoa risk in the source water. If protozoa are Treatment Rule (LT2ESWTR) and track source water detected, source tracking will help to identify which source, contributions at the time of sample collection. and possibly which activity, is contributing.

4) Implement the System Specific Study for compliance This regulatory requirement will confirm and quantify the with the Initial Distribution System Evaluation (IDSE) risk for increased DBP development in the distribution requirement of the Stage 2 Disinfectants/Disinfection By- system. Products (D/DBP) Rule.

5) Increase monitoring frequency from weekly to daily for Plankton levels in the Sweetwater Reservoir have peaked plankton analysis in order to detect the occurrence of significantly in the past few years. The root causes cannot plankton blooms in the Sweetwater Reservoir as early as be determined with the available data, but appear to be possible. quite complex.

6) Update field monitoring plan to optimize location and Once the monitoring recommendations have been type of data collected for constituents related to current evaluated, the SWA should incorporate these plans into the potential contaminating activities (PCAs) of concern (i.e. overall Watershed Monitoring to reduce duplication of iron, manganese, total dissolved solids (TDS), VOCs). similar efforts.

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Table 6-1 Cont’d First Update Recommendations

Watershed Contaminant Sources Recommendation Basis for Recommendation 7) Review annual reports submitted by the County of San Benzene, cis-1,2-dichloroethene and thallium have been Diego Department of Public Works for the Viejas Landfill to detected above the MCL in downgradient wells associated keep track of VOCs and heavy metals in the downgradient with the Viejas landfill. wells, particularly benzene, cis-1,2-dichloroethene and thallium. If levels continue to be of concern, the Regional Board should be contacted.

8) Review annual reports submitted by the County of San A number of VOCs have been detected above the MCL in Diego Department of Public Works for the Jamacha landfill downgradient wells associated with the Jamacha landfill. to keep track of VOCs, TDS, chloride, iron, manganese, There are also select wells which exceed the WQPS for and arsenic in the downgradient wells. If levels continue to chloride, TDS, arsenic and manganese; iron is also be of concern, the Regional Board should be contacted. elevated in select wells from a drinking water perspective. It is difficult to determine if the concentrations of TDS, chloride, iron, and manganese in downgradient wells are naturally occurring or impacted by the landfill.

9) Conduct additional monitoring of iron and manganese to Iron and manganese are higher in the Sweetwater investigate impacts from landfill and to possibly capture Reservoir compared to Loveland Reservoir. This peaks in the data. When releases from Loveland Reservoir monitoring should help to determine if iron and manganese occur, iron, manganese and arsenic should be sampled on increase when water is released from Loveland Reservoir, a weekly basis at Loveland Reservoir, Old Bridge, Low and if the Jamacha landfill may be further contributing to Flow Barrier, and the Sweetwater River Influent. this increase.

10) Discontinue sampling of the most downstream well at Evaluation of SOC data over the reporting period and each golf course for pesticides during or after a rainstorm, investigation of current chemical use at golf courses does once every two years. not warrant sampling every two years. Sampling could be reduced to every five years, if at all, for informational purposes.

Sweetwater and Loveland Reservoirs Watershed Sanitary Survey Page 6-4 First Update – Final Report SECTION 6 – RECOMMENDATIONS

Table 6-1 Cont’d First Update Recommendations

Recommendation Basis for Recommendation 11) Continue to review and track developments within the This has proven to be a very effective mechanism to protect watershed. In order to protect the source water quality of source water quality and should be continued. the Sweetwater River, continue to provide comment letters to the County of San Diego on developments that could cause impacts to surface water and/or groundwater from high risk or very high risk PCAs.

12) Write the County of San Diego, Department of AWM Inspection of equestrian facilities within the Sweetwater Agricultural Water Quality program a letter to acknowledge watershed has changed manure management practices their efforts to protect the Sweetwater River from and prevented manure from entering the Sweetwater River. contamination from equestrian facilities and to maintain good rapport between agencies. 13) SWA should coordinate with other stakeholders in the Homeless encampments have been an on-going problem in watershed to develop a strategy to deal with homeless the riparian areas just upstream of the Sweetwater encampments that may affect water quality. Occupant Reservoir. Multiple land owners and jurisdictions have relocation, site clean up, and monitoring to preclude made it difficult to address encampments in a timely reoccurring camps, among other items should be manner. addressed. The U.S. Fish and Wildlife Service is developing a Comprehensive Conservation Plan (CCP) for the San Diego Wildlife Refuge, and SWA should encourage them to address the homeless encampment issue within their Plan. 14) Encourage the U.S. Fish and Wildlife Service to actively Currently, trails within the San Diego Wildlife Refuge are manage use of the San Diego Wildlife Refuge trails by unmanaged and used for both private and commercial equestrians in the CCP. equestrian purposes. Efforts to actively manage the use of the trails may alter current equestrian use. The SWA’s input into the CCP may help control horse manure or direct equestrian use away from the Sweetwater River and tributaries.

Sweetwater and Loveland Reservoirs Watershed Sanitary Survey Page 6-5 First Update – Final Report SECTION 6 – RECOMMENDATIONS

Table 6-1 Cont’d First Update Recommendations

15) Continue to participate in Burned Area Emergency The BAER meetings provide the most updated information Response (BAER) meetings whenever a fire occurs in the on post-fire conditions. Participation in BAER meetings by watershed. SWA helps to ensure that water quality will be considered.

16) Continue to operate the URDS to prevent urban runoff Urban runoff monitoring results of the Sweetwater River at and hazardous spills from entering the Sweetwater the Old Bridge show high mineral content in the dry weather Reservoir. flows, as well as high total and fecal coliform, and occasionally high levels of nutrients, particularly phosphorus.

17) Continue monitoring associated with the United States Data from the monitoring program will provide valuable Geologic Survey (USGS) Route 125 Air Deposition Study information about the impacts of atmospheric deposition for the duration of the monitoring plan, as funds are from Route 125 to the Sweetwater Reservoir. available.

Sweetwater and Loveland Reservoirs Watershed Sanitary Survey Page 6-6 First Update – Final Report

APPENDIX A BIBLIOGRAPHY AND LIST OF CONTACTS

APPENDIX A

BIBLIOGRAPHY AND LIST OF CONTACTS

Sweetwater Authority Watershed Sanitary Survey prepared by Montgomery Watson, December 1995.

URDS Optimization Final Report, Prepared by Ernie Wake for the Sweetwater Authority, November 17, 2000.

Tentative Order R9-2007-0005, Waste Discharge Requirements for Sewage Collection Agencies in the San Diego Region.

Jones-Lee, A. and Lee, G. F., "Groundwater Pollution by Municipal Landfills: Leachate Composition, Detection and Water Quality Significance," Proc. Sardinia '93 IV International Landfill Symposium, Sardinia, Italy, pp. 1093-1103, October (1993).

GeoSyntec Consultants. April 2006. October 2005 – March 2006 Semi-Annual Monitoring Report and 2005 Annual Monitoring Report Detection Monitoring Program Viejas Landfill San Diego County, CA. Prepared for County of San Diego Department of Public Works, Landfill Management.

GeoSyntec Consultants. April 2006. October 2005 – March 2006 Semi-Annual Monitoring Report and 2005 Annual Monitoring Report Detection Monitoring Program Jamacha Landfill San Diego County, CA. Prepared for County of San Diego Department of Public Works, Landfill Management.

GeoSyntec Consultants. September 2006. Report of Waste Discharge and Corrective Action Plan Jamacha Landfill San Diego County, CA. Prepared for County of San Diego Department of Public Works, Landfill Management.

GeoSyntec Consultants. October 2003. Phase II Evaluation Monitoring Program Jamacha Landfill San Diego County, CA. Prepared for County of San Diego Department of Public Works, Landfill Management.

Personal communication, Brian Hitchens, GeoSyntec, (858)675-8677.

Personal communication. Ed Wortley, Palo Verde Lake, (619)445-9858.

Personal communication. Steve Parker, Sweetwater Authority.

Order No. 94-114 Waste Discharge Requirements for State of California Department of Parks and Recreation Cuyamaca Rancho State Park San Diego County.

California Regional Water Quality Control Board San Diego Region. Order No. R9- 2007-0001 NPDES No. CAS0108758. Waste Discharge Requirements for Discharges of Urban Runoff from the Municipal Separate Storm Sewer Systems Draining the Watersheds of the County of San Diego, the incorporated cities of San Diego County,

Sweetwater and Loveland Reservoirs Watershed Sanitary Survey First Update – Final Report APPENDIX A

the San Diego Unified Port District, and the San Diego County Regional Airport Authority.

Jurisdictional Urban Runoff Management Program Fiscal Year 2005-2006 Annual Report, submitted by the San Diego Stormwater Copermittees.

San Diego Bay Watershed Urban Runoff Management Program 2005-2006 Annual Report. January 2007.

Personal Communication, Jon Van Rhyn, County of San Diego Dept. of Public Works, (858)495-5133.

The County of San Diego Watershed Protection, Stormwater Management and Discharge Control Ordinance.

Personal Communication, Velisa Jeffries, San Diego County Department of Public Works, Wastewater Management Section, (858)694-2696

Personal Communication, Mark Perrett, San Diego County Department of Public Works, Wastewater Management Section, (858)694-2693.

Personal Communication, Jim Peasley, Otay Water District, (619)670-2242.

Personal Communication, Liew Munter, County of San Diego Department of Environmental Health, (619)441-4448.

Order No. R9-2007-0038 Master Reclamation Permit for Otay Water District Ralph W. Chapman Water Reclamation Facility.

Order No. 95-89 Waste Discharge Requirements for Thomas Sarrantos Pair-A-Dice Mobile Home Park San Diego County.

Order No. 94-14 Waste Discharge Requirements for Thousand Trails, Inc. Oakzanita Springs Park San Diego County.

Order No. 95-19 Waste Discharge Requirements for Mrs. Sue Latimer and Mr. Jim Shafer of Swallows Sun Island Club near Harbison Canyon.

Order No. 93-112 Waste Discharge Requirements for the San Diego County Sheriff’s Department Descanso Detention Facility Water Pollution Control Facility San Diego County.

Otay Water District Water Conservation and Recycling Update, 1st Quarter Fiscal Year 2005-2006

Sweetwater and Loveland Reservoirs Watershed Sanitary Survey First Update – Final Report APPENDIX A

Mendez, G.O., Sidhu, J.S., and Majewski, M.S., 2002, Water Quality Monitoring of Sweetwater and Loveland Reservoirs, San Diego County, California, Phase One Results, 1998-1999: USGS Open File Report 02-186.

Mendez, G.O., Foreman, W.T., Sidhu, J.S., and Majewski, M.S., 2007, Water and Air- Quality Monitoring of the Sweetwater Reservoir Watershed, San Diego County, California, Phase One Results, Continued, 1999-2001: USGS Data Series 233, 270 p.

Personal Communication. Steve Rowe, YMCA, (619)449-9622.

Information received from Jim Reed, Director of Public Works, Viejas Tribal Council (619)659-2346.

Information received from Dave Nelson, Water Works Manager, Sycuan Resort and Casino (619)445-6002 X 1001.

Pesticide Use Reports received from County of San Diego, Pesticide Regulation, Tina Thomas, (858)694-8963.

Information received on fertilizer use at Cottonwood Golf Course, Maintenance, Cottonwood Golf Course, (619)447-0012.

Personal Communication, Don Bruebaker, USFWS, (619)843-3647.

County of San Diego Water Quality Compliance Inspection Reports for Willow Glen Equestrian and Bright Valley Farms.

Personal Communication, Mike from Bright Valley Farms, (619)670-1861.

Personal Communication, Ms. Young from Pepperock Farms, (619)660-8111.

Information received from County of San Diego, Department of Agriculture, Weights and Measures on agricultural areas, equestrian facilities, nurseries, dairies, Dawn Neilsen, (858)694-2775.

USGS Fact Sheet 070-01. August 2001. Water Quality Monitoring of Sweetwater Reservoir.

USGS Fact Sheet 112-01. Improving Water Quality in Sweetwater Reservoir, San Diego County, California. Sources and Mitigation Strategies for Trihalomethane (THM)- Forming Carbon.

Johnson, E., E. R. Atwill, M.E. Filkins, and J. Kalush. 1997. The Prevalence of Shedding of Cryptosporidium and Giardia spp. Based on a Single Fecal Sample Collection from each of 91 Horses Used for Backcountry Recreation. J. Vet. Diagn. Invest. 9:56-60.

Sweetwater and Loveland Reservoirs Watershed Sanitary Survey First Update – Final Report APPENDIX A

Forde, K. N., A.M. Swinker, J.L. Traub-Dargatz and J. M. Cheney. 1998. The Prevalence of Cryptosporidium/Giardia in the Trail Horse Population Utilizing Public Lands in Colorado. J. Equine Vet. Sci. 18:1:38-40.

Atwill, E. R. 1996. Assessing the Link Between Rangeland Cattle and Waterborne Cryptosporidium parvum infection in Humans. Rangelands 18:2:48-51.

Majewska, A., et al . 1999. Survey on Equine Cryptosporidiosis in Poland and the Possibility of Zoonotic Transmission. Ann. Agric. Environ. Med. 6:161-65.

Ranalli, A.J., 2004, A Summary of the Scientific Literature on the Effects of Fire on the Concentration of Nutrients in Surface Waters: U.S. Geological Survey Open-File Report 2004-1296, 23 p.

Information received from U.S. Forest Service on Cedar and Viejas Fires, Acree Shree, Fire Management Officer (619)445-6235 X 3420.

Viejas Fire BAER report, Soil, Water,and Geology. R. Wright and M. McCorison. 2001.

Cedar Fire Burned-Area Report, USDA Forest Service, FS-2500-8.

Sweetwater and Loveland Reservoirs Watershed Sanitary Survey First Update – Final Report

APPENDIX B SUMMARIES OF PERDUE WTP INTAKE DATA

SW Raw SW Raw SW Raw SW Raw SW Raw SW Raw SW Raw SW Raw Total E. coli Total E. coli Total E. coli Total E. coli DATE Coliform Coliform DATE Coliform Coliform DATE Coliform Coliform DATE Coliform Coliform 01/01/96 5.0 23.0 09/10/97 7.0 13.0 05/23/99 272.3 24.3 01/31/01 58.9 40.3 01/02/96 6.0 7.0 09/11/97 9.0 2.0 05/24/99 178.5 21.8 02/01/01 88.8 25.0 01/03/96 6.0 30.0 09/12/97 7.0 2.0 05/25/99 410.6 13.5 02/02/01 59.4 14.6 01/04/96 6.0 30.0 09/13/97 2.0 2.0 05/26/99 325.5 24.9 02/03/01 57.6 25.9 01/05/96 9.0 130.0 09/14/97 2.0 2.0 05/27/99 387.3 14.5 02/04/01 52.9 27.1 01/06/96 9.0 50.0 09/15/97 2.0 2.0 05/28/99 436 18.3 02/05/01 27.8 33.2 01/07/96 12.0 170.0 09/16/97 2.0 2.0 05/29/99 307.6 20.9 02/06/01 74.4 31.2 01/08/96 7.0 13.0 09/17/97 1.0 2.0 05/30/99 110 14.6 02/07/01 193.5 49.6 01/09/96 8.0 80.0 09/18/97 2.0 4.0 05/31/99 81.3 27.2 02/08/01 147 33.6 01/10/96 11.0 300.0 09/19/97 4.0 11.0 06/01/99 116.2 26.2 02/09/01 133.4 27.2 01/11/96 7.0 50.0 09/20/97 4.0 2.0 06/02/99 118.7 18.9 02/10/01 156.5 35.4 01/12/96 8.0 80.0 09/21/97 6.0 30.0 06/03/99 172.6 29.2 02/11/01 70.7 26.6 01/13/96 12.0 110.0 09/22/97 2.0 4.0 06/04/99 160.7 30.5 02/12/01 67.9 20.2 01/14/96 13.0 170.0 09/23/97 6.0 17.0 06/05/99 1119.8 1.0 02/13/01 72.4 12.1 01/15/96 6.0 30.0 09/24/97 4.0 8.0 06/06/99 461.1 11.0 02/14/01 119.8 17.3 01/16/96 6.0 30.0 09/25/97 11.0 70.0 06/08/99 770.1 66.9 02/15/01 41.9 15.1 01/17/96 8.0 30.0 09/26/97 4.0 13.0 06/09/99 290.9 13.4 02/16/01 193.5 13.5 01/18/96 7.0 21.0 09/27/97 4.0 4.0 06/10/99 224.7 22.8 02/17/01 290.9 9.7 01/19/96 10.0 30.0 09/28/97 3.0 4.0 06/11/99 201.4 33.1 02/18/01 52.4 10.1 01/20/96 7.0 22.0 09/29/97 5.0 30.0 06/12/99 218.7 16.9 02/19/01 17.6 15.2 01/21/96 10.0 11.0 09/30/97 3.0 4.0 06/13/99 145.5 29.5 02/20/01 65.4 12.1 01/22/96 8.0 22.0 10/01/97 3.0 9.0 06/14/99 387.3 39.9 02/21/01 204.6 8.4 01/23/96 6.0 11.0 10/02/97 4.0 4.0 06/15/99 210.5 14.5 02/22/01 93.8 18.3 01/24/96 7.0 17.0 10/03/97 6.0 11.0 06/16/99 231 23.5 02/23/01 125.9 7.4 01/25/96 2.0 2.0 10/04/97 2.0 4.0 06/17/99 214.3 52.1 02/24/01 127.4 5.2 01/26/96 5.0 2.0 10/05/97 2.0 2.0 06/18/99 275.5 14.8 02/25/01 435.2 6.3 01/27/96 7.0 13.0 10/06/97 2.0 4.0 06/19/99 387.3 3.1 02/26/01 488.4 1.0 01/28/96 9.0 50.0 10/07/97 5.0 4.0 06/20/99 261.3 16.9 02/27/01 1732.87 9.8 01/29/96 7.0 50.0 10/08/97 4.0 11.0 06/21/99 261.3 7.3 02/28/01 1553.07 18.1 01/30/96 3.0 4.0 10/09/97 3.0 7.0 06/22/99 307.6 5.2 03/01/01 2419.2 21.8 01/31/96 4.0 8.0 10/10/97 2.0 2.0 06/23/99 139.6 3.0 03/02/01 2419.2 4.1 02/01/96 5.0 4.0 10/11/97 5.0 2.0 06/24/99 410.6 2.0 03/03/01 2419.2 1.0 02/02/96 3.0 8.0 10/12/97 3.0 2.0 06/25/99 2419.2 5.2 03/04/01 2419.2 5.2 02/03/96 8.0 80.0 10/13/97 9.0 23.0 06/26/99 334.8 5.2 03/05/01 2419.2 8.6 02/04/96 5.0 23.0 10/14/97 13.0 2.0 06/27/99 107.6 3.1 03/06/01 2419.2 11.0 02/05/96 5.0 11.0 10/15/97 15.0 7.0 06/28/99 238.2 1.0 03/07/01 2419.2 6.3 02/06/96 4.0 8.0 10/16/97 14.0 11.0 06/29/99 78.5 20.1 03/08/01 2419.2 5.2 02/07/96 7.0 23.0 10/17/97 9.0 2.0 06/30/99 129.1 1.0 03/09/01 2419.2 12.2 02/08/96 5.0 17.0 10/18/97 8.0 30.0 07/01/99 78.5 5.2 03/10/01 2419.2 21.8 02/09/96 5.0 13.0 10/19/97 15.0 22.0 07/02/99 62 1.0 03/11/01 2419.2 19.7 02/10/96 7.0 50.0 10/20/97 15.0 23.0 07/03/99 186 19.7 03/12/01 2419.2 26.9 02/11/96 5.0 17.0 10/21/97 14.0 27.0 07/04/99 105 7.3 03/13/01 2419.2 22.3 02/12/96 6.0 17.0 10/22/97 14.0 1600.0 07/05/99 186 4.1 03/14/01 2419.2 24.9 02/13/96 6.0 17.0 10/23/97 12.0 14.0 07/06/99 260.2 12.2 03/15/01 2419.2 33.1 02/14/96 6.0 11.0 10/24/97 14.0 11.0 07/07/99 14.1 2.0 03/16/01 2419.2 8.5 02/15/96 6.0 21.0 10/25/97 12.0 14.0 07/08/99 119.8 2.0 03/17/01 2419.2 70.3 02/16/96 7.0 23.0 10/26/97 15.0 14.0 07/09/99 770.1 2.0 03/18/01 2419.2 50.4 02/17/96 6.0 30.0 10/27/97 11.0 13.0 07/10/99 184.2 15.8 03/19/01 2419.2 23.5 02/18/96 5.0 23.0 10/28/97 10.0 4.0 07/11/99 98.8 1.0 03/20/01 1553.07 11.0 02/19/96 6.0 30.0 10/29/97 12.0 14.0 07/12/99 137.4 8.4 03/21/01 1986.3 14.3 02/20/96 4.0 8.0 10/30/97 11.0 11.0 07/13/99 111.2 2.0 03/22/01 2419.2 4.1 02/21/96 6.0 2.0 10/31/97 8.0 33.0 07/14/99 161.6 2.0 03/23/01 1299.65 8.4 02/22/96 3.0 2.0 11/01/97 11.0 17.0 07/15/99 307.6 5.1 03/24/01 1986.28 8.5 02/23/96 4.0 2.0 11/02/97 11.0 4.0 07/16/99 980.4 25.3 03/25/01 1986.28 13.5 02/24/96 5.0 23.0 11/03/97 12.0 2.0 07/17/99 325.5 2.0 03/26/01 1732.87 19.7 02/25/96 6.0 30.0 11/04/97 15.0 2.0 07/18/99 1732.8 1.0 03/27/01 2419.2 7.4 02/26/96 6.0 30.0 11/05/97 7.0 2.0 07/19/99 1413.6 9.7 03/28/01 261 7.4 02/27/96 6.0 22.0 11/06/97 15.0 8.0 07/20/99 866.4 7.4 03/29/01 2419.2 90.9 02/28/96 5.0 4.0 11/07/97 15.0 8.0 07/21/99 1299.6 6.3 03/30/01 2419.2 38.4 02/29/96 9.0 9.0 11/08/97 15.0 2.0 07/22/99 1986.28 29.2 03/31/01 2419.2 49.4 03/01/96 7.0 11.0 11/09/97 15.0 4.0 07/23/99 980.4 18.9 04/01/01 648.8 4.1 03/02/96 7.0 7.0 11/10/97 15.0 11.0 07/24/99 816.4 6.3 04/02/01 980.4 41.6 03/03/96 6.0 8.0 11/11/97 11.0 17.0 07/25/99 1203.31 7.4 04/03/01 579.4 29.2 03/04/96 1.0 2.0 11/12/97 12.0 17.0 07/26/99 2419.17 9.8 04/04/01 260.2 8.5 03/05/96 4.0 13.0 11/13/97 10.0 13.0 07/27/99 1553.07 20.3 04/05/01 172.5 14.8 03/06/96 2.0 4.0 11/14/97 11.0 23.0 07/28/99 1553.07 16.0 04/06/01 154.1 13.2 03/07/96 2.0 2.0 11/15/97 12.0 21.0 07/29/99 387.3 11.0 04/07/01 101.7 23.8 03/08/96 2.0 4.0 11/16/97 11.0 22.0 07/30/99 1413.6 17.1 04/08/01 179.3 31.3 03/09/96 2.0 2.0 11/17/97 10.0 17.0 07/31/99 1299.65 13.5 04/09/01 204.6 23.3 03/10/96 3.0 2.0 11/18/97 7.0 4.0 08/01/99 920.8 3.1 04/10/01 160.7 13.2 03/11/96 4.0 13.0 11/19/97 8.0 80.0 08/02/99 488.4 22.6 04/11/01 90.7 11.0 03/12/96 4.0 13.0 11/20/97 7.0 14.0 08/03/99 770.1 6.2 04/12/01 110.6 8.4 03/13/96 6.0 13.0 11/21/97 3.0 2.0 08/04/99 517.2 4.1 04/13/01 74.9 12.1 03/14/96 6.0 17.0 11/22/97 5.0 8.0 08/05/99 248.9 10.9 04/14/01 166.4 8.6 03/15/96 3.0 4.0 11/23/97 4.0 4.0 08/06/99 187.2 2.0 04/15/01 172.3 18.7 03/16/96 4.0 2.0 11/24/97 3.0 2.0 08/07/99 143.9 3.1 04/16/01 129.6 20.3 03/17/96 4.0 13.0 11/25/97 3.0 4.0 08/08/99 178.9 3.1 04/17/01 113.7 20.3 03/18/96 8.0 110.0 11/26/97 4.0 13.0 08/09/99 85.5 8.6 04/18/01 32.7 11.0 03/19/96 6.0 11.0 11/27/97 2.0 2.0 08/10/99 65 4.1 04/19/01 93.3 21.3 03/20/96 5.0 13.0 11/28/97 2.0 4.0 08/11/99 44.1 6.3 04/20/01 44.1 14.6 03/21/96 6.0 11.0 11/29/97 3.0 8.0 08/12/99 18.1 2.0 04/21/01 82 29.2 03/22/96 7.0 50.0 11/30/97 4.0 14.0 08/13/99 50.4 26.2 04/22/01 56.5 10.9 03/23/96 2.0 4.0 12/01/97 6.0 17.0 08/14/99 13 1.0 04/23/01 261.3 22.8 03/24/96 9.0 130.0 12/02/97 5.0 4.0 08/15/99 22.8 5.2 04/24/01 261.3 9.8 03/25/96 7.0 2.0 12/03/97 3.0 8.0 08/16/99 9.5 3.0 04/25/01 290.9 27.2 03/26/96 5.0 7.0 12/04/97 4.0 8.0 08/17/99 19.9 1.0 04/26/01 137.6 8.5 03/27/96 5.0 23.0 12/05/97 5.0 13.0 08/18/99 15.8 1.0 04/27/01 98.8 6.3 03/28/96 3.0 7.0 12/06/97 8.0 50.0 08/19/99 9.6 1.0 04/28/01 96 14.8 03/29/96 6.0 30.0 12/07/97 5.0 13.0 08/20/99 33.5 13.5 04/29/01 980.4 613.1 03/30/96 8.0 70.0 12/08/97 4.0 8.0 08/21/99 48.7 2.0 04/30/01 86.7 32.0 03/31/96 7.0 26.0 12/09/97 2.0 4.0 08/22/99 34.1 4.1 05/01/01 133.4 35.0 04/01/96 5.0 11.0 12/10/97 5.0 13.0 08/23/99 37.3 6.3 05/02/01 77.1 13.5 04/02/96 3.0 2.0 12/11/97 5.0 23.0 08/24/99 52.1 2.0 05/03/01 50.4 13.4 04/03/96 7.0 30.0 12/12/97 5.0 23.0 08/25/99 12.1 2.0 05/04/01 488.4 260.2 04/04/96 6.0 17.0 12/13/97 3.0 4.0 08/26/99 77.6 3.1 05/05/01 238.2 65.7 04/05/96 5.0 23.0 12/14/97 3.0 4.0 08/27/99 114.5 21.6 05/06/01 228.2 66.9 04/06/96 2.0 4.0 12/15/97 2.0 4.0 08/28/99 66.3 9.8 05/07/01 04/07/96 2.0 2.0 12/16/97 4.0 11.0 08/29/99 42.8 5.2 05/08/01 74.9 27.8 SW Raw SW Raw SW Raw SW Raw SW Raw SW Raw SW Raw SW Raw Total E. coli Total E. coli Total E. coli Total E. coli DATE Coliform Coliform DATE Coliform Coliform DATE Coliform Coliform DATE Coliform Coliform 04/08/96 4.0 13.0 12/17/97 4.0 11.0 08/30/99 55.4 14.2 05/09/01 37.1 14.8 04/09/96 4.0 13.0 12/18/97 2.0 2.0 08/31/99 39.9 1.0 05/10/01 224.7 75.4 04/10/96 4.0 4.0 12/19/97 1.0 2.0 09/01/99 88.2 3.1 05/11/01 77.6 31.3 04/11/96 5.0 11.0 12/20/97 2.0 2.0 09/02/99 307.6 3.1 05/12/01 37.3 10.9 04/12/96 3.0 8.0 12/21/97 4.0 13.0 09/03/99 290.9 6.3 05/13/01 85.5 16.1 04/13/96 2.0 4.0 12/22/97 5.0 23.0 09/04/99 139.6 3.0 05/14/01 261.3 98.5 04/14/96 4.0 8.0 12/23/97 3.0 4.0 09/05/99 160.7 1.0 05/15/01 488.4 79.4 04/15/96 3.0 8.0 12/24/97 4.0 13.0 09/06/99 88.2 6.3 05/16/01 1046.24 224.7 04/16/96 4.0 13.0 12/25/97 6.0 17.0 09/07/99 85.7 4.1 05/17/01 1119.85 42.6 04/17/96 4.0 2.0 12/26/97 5.0 8.0 09/08/99 108.1 2.0 05/18/01 866.4 79.4 04/18/96 3.0 2.0 12/27/97 3.0 2.0 09/09/99 178.9 1.0 05/19/01 1413.6 75.4 04/19/96 2.0 2.0 12/28/97 3.0 4.0 09/10/99 61.3 4.1 05/20/01 2419.2 387.3 04/20/96 8.0 80.0 12/29/97 1.0 2.0 09/11/99 76.6 17.3 05/21/01 2419.2 365.4 04/21/96 5.0 8.0 12/30/97 1.0 2.0 09/12/99 60.1 3.1 05/22/01 1986.2 648.8 04/22/96 6.0 30.0 12/31/97 3.0 4.0 09/13/99 65.7 1.0 05/23/01 2419.2 1986.3 04/23/96 11.0 220.0 01/01/98 2.0 2.0 09/14/99 93.3 3.0 05/24/01 2419.2 18.3 04/24/96 8.0 50.0 01/02/98 2.0 2.0 09/15/99 117.8 6.3 05/25/01 2419.2 122.3 04/25/96 7.0 13.0 01/03/98 2.0 2.0 09/16/99 261.3 4.1 05/26/01 2419.2 30.5 04/26/96 6.0 13.0 01/04/98 2.0 2.0 09/17/99 142.1 4.1 05/27/01 2419.2 410.6 04/27/96 5.0 7.0 01/05/98 1.0 2.0 09/18/99 74.9 7.4 05/28/01 2419.2 248.1 04/28/96 4.0 4.0 01/06/98 4.0 4.0 09/19/99 101.4 9.7 05/29/01 2419.2 88.6 04/29/96 4.0 4.0 01/07/98 3.0 4.0 09/20/99 90.7 5.2 05/30/01 2419.2 131.7 04/30/96 7.0 30.0 01/08/98 4.0 8.0 09/21/99 116.9 <1 05/31/01 2419.2 95.6 05/01/96 10.0 50.0 01/09/98 3.0 7.0 09/22/99 70.3 1.0 06/01/01 2419.2 22.6 05/02/96 9.0 50.0 01/10/98 3.0 4.0 09/23/99 115.3 8.6 06/02/01 2419.2 49.6 05/03/96 5.0 13.0 01/11/98 2.0 4.0 09/24/99 91 5.2 06/03/01 2419.2 123.6 05/04/96 3.0 2.0 01/12/98 2.0 2.0 09/25/99 78.5 4.1 06/04/01 2419.2 186.0 05/05/96 6.0 4.0 01/13/98 5.0 8.0 09/26/99 204.6 12.2 06/05/01 2419.2 125.0 05/06/96 6.0 8.0 01/14/98 3.0 2.0 09/27/99 185 7.4 06/06/01 2419.2 201.4 05/07/96 4.0 13.0 01/15/98 4.0 11.0 09/28/99 204.6 5.2 06/07/01 2419.2 104.6 05/08/96 4.0 13.0 01/16/98 4.0 8.0 09/29/99 198.9 2.0 06/08/01 1011.1 248.9 05/09/96 5.0 13.0 01/17/98 6.0 4.0 09/30/99 248.9 3.1 06/09/01 1413.6 193.5 05/10/96 1.0 2.0 01/18/98 3.0 2.0 10/01/99 248.1 1.0 06/10/01 1299.65 129.6 05/11/96 2.0 2.0 01/19/98 3.0 8.0 10/02/99 238.2 8.5 06/11/01 2419.17 41.0 05/12/96 3.0 4.0 01/20/98 6.0 22.0 10/03/99 461.1 6.2 06/12/01 2419.2 20.1 05/13/96 2.0 4.0 01/21/98 6.0 11.0 10/04/99 93.3 2.0 06/13/01 2419.2 127.4 05/14/96 4.0 2.0 01/22/98 5.0 13.0 10/05/99 85.7 1.0 06/14/01 2419.2 104.6 05/15/96 9.0 13.0 01/23/98 6.0 11.0 10/06/99 93.5 1.0 06/15/01 2419.2 38.2 05/16/96 8.0 8.0 01/24/98 6.0 30.0 10/07/99 18.7 1.0 06/16/01 2419.17 133.4 05/17/96 4.0 8.0 01/25/98 5.0 8.0 10/08/99 22.6 1.0 06/17/01 2419.2 135.4 05/18/96 3.0 4.0 01/26/98 5.0 8.0 10/09/99 50.4 1.0 06/18/01 2419.2 74.9 05/19/96 2.0 2.0 01/27/98 4.0 8.0 10/10/99 166.4 1.0 06/19/01 2419.2 79.4 05/20/96 6.0 8.0 01/28/98 4.0 2.0 10/11/99 79.8 1.0 06/20/01 2419.2 121.1 05/21/96 2.0 2.0 01/29/98 5.0 9.0 10/12/99 146.7 1.0 06/21/01 2419.2 48.7 05/22/96 3.0 2.0 01/30/98 2.0 2.0 10/13/99 156.5 4.1 06/22/01 05/23/96 3.0 4.0 01/31/98 4.0 13.0 10/14/99 206.3 1.0 06/23/01 1046.24 6.2 05/24/96 3.0 4.0 02/01/98 1.0 2.0 10/15/99 344.8 5.1 06/24/01 2419.2 53.8 05/25/96 3.0 2.0 02/02/98 4.0 4.0 10/16/99 344.8 1.0 06/25/01 1119.85 66.9 05/26/96 2.0 4.0 02/03/98 4.0 4.0 10/17/99 479.4 3.1 06/26/01 1732.87 29.5 05/27/96 4.0 8.0 02/04/98 6.0 13.0 10/18/99 648.8 5.2 06/27/01 1176 52.9 05/28/96 3.0 4.0 02/05/98 6.0 13.0 10/19/99 579.4 1.0 06/28/01 1413.6 7.4 05/29/96 6.0 2.0 02/06/98 7.0 13.0 10/20/99 2419.2 4.1 06/29/01 344.8 4.8 05/30/96 10.0 11.0 02/07/98 5.0 7.0 10/21/99 1986.28 1.0 06/30/01 290.9 32.8 05/31/96 5.0 13.0 02/08/98 6.0 4.0 10/22/99 2419.2 1.0 07/01/01 214.3 61.2 06/01/96 7.0 13.0 02/09/98 9.0 23.0 10/23/99 2419.2 1.0 07/02/01 461.1 284.1 06/02/96 6.0 8.0 02/10/98 10.0 170.0 10/24/99 2419.2 1.0 07/03/01 261.3 54.7 06/03/96 5.0 4.0 02/11/98 9.0 11.0 10/25/99 2419.2 2.0 07/04/01 613.1 49.6 06/04/96 5.0 2.0 02/12/98 9.0 23.0 10/26/99 2419.17 1.0 07/05/01 344.8 90.7 06/05/96 3.0 2.0 02/13/98 7.0 2.0 10/27/99 1986.28 4.1 07/06/01 517.2 32.4 06/06/96 5.0 4.0 02/14/98 8.0 13.0 10/28/99 2419.17 5.2 07/07/01 130.8 82.0 06/07/96 3.0 4.0 02/15/98 8.0 14.0 10/29/99 1299.65 5.2 07/08/01 613.1 73.8 06/08/96 4.0 2.0 02/16/98 10.0 170.0 10/30/99 866.4 2.0 07/09/01 613.1 73.3 06/09/96 7.0 2.0 02/17/98 14.0 220.0 10/31/99 980.4 2.0 07/10/01 517.2 178.5 06/10/96 4.0 2.0 02/18/98 13.0 900.0 11/01/99 727 1.0 07/11/01 461.1 41.0 06/11/96 1.0 2.0 02/19/98 12.0 300.0 11/02/99 1203.31 11.8 07/12/01 387.3 96.0 06/12/96 2.0 2.0 02/20/98 14.0 34.0 11/03/99 980.4 5.2 07/13/01 261.9 27.2 06/13/96 1.0 2.0 02/21/98 11.0 70.0 11/04/99 770.1 17.5 07/14/01 325.5 50.4 06/14/96 2.0 2.0 02/22/98 11.0 70.0 11/05/99 325.5 6.3 07/15/01 770.1 117.8 06/15/96 1.0 2.0 02/23/98 9.0 23.0 11/06/99 613.1 23.1 07/16/01 1732.87 52.9 06/16/96 1.0 2.0 02/24/98 10.0 23.0 11/07/99 260.2 10.9 07/17/01 2419.2 66.3 06/17/96 1.0 2.0 02/25/98 13.0 110.0 11/08/99 410.6 27.5 07/18/01 1553.07 101.4 06/18/96 2.0 2.0 02/26/98 11.0 80.0 11/09/99 278.5 12.1 07/19/01 2419.2 68.9 06/19/96 1.0 2.0 02/27/98 12.0 110.0 11/10/99 290.9 12.1 07/20/01 2419.2 387.3 06/20/96 2.0 2.0 02/28/98 12.0 130.0 11/11/99 980.4 5.2 07/21/01 1986.28 325.5 06/21/96 2.0 2.0 03/01/98 12.0 130.0 11/12/99 189.2 4.1 07/22/01 2419.17 50.4 06/22/96 2.0 2.0 03/02/98 15.0 50.0 11/13/99 139.6 8.5 07/23/01 727.8 86.2 06/23/96 1.0 2.0 03/03/98 14.0 130.0 11/14/99 75.4 2.0 07/24/01 2419.17 45.7 06/24/96 2.0 2.0 03/04/98 12.0 23.0 11/15/99 93.3 4.1 07/25/01 06/25/96 2.0 2.0 03/05/98 8.0 4.0 11/16/99 88.4 4.1 07/26/01 2419.2 38.4 06/26/96 2.0 2.0 03/06/98 12.0 2.0 11/17/99 54.7 1.0 07/27/01 1553.07 40.8 06/27/96 1.0 2.0 03/07/98 7.0 9.0 11/18/99 31.3 1.0 07/28/01 816.4 90.6 06/28/96 2.0 2.0 03/08/98 8.0 2.0 11/19/99 62.9 1.0 07/29/01 613.1 172.2 06/29/96 2.0 2.0 03/09/98 5.0 2.0 11/20/99 43.5 1.0 07/30/01 344.8 24.0 06/30/96 2.0 2.0 03/10/98 7.0 2.0 11/21/99 58.6 2.0 07/31/01 686.7 27.0 07/01/96 2.0 2.0 03/11/98 10.0 2.0 11/22/99 49.6 3.1 08/01/01 410.6 27.5 07/02/96 2.0 2.0 03/12/98 7.0 2.0 11/23/99 34.5 4.1 08/02/01 344.8 48.3 07/03/96 2.0 2.0 03/13/98 10.0 2.0 11/24/99 27.2 1.0 08/03/01 517.2 75.4 07/04/96 2.0 2.0 03/14/98 9.0 2.0 11/25/99 33.2 2.0 08/04/01 344.8 24.3 07/05/96 2.0 4.0 03/15/98 6.0 2.0 11/26/99 34.5 5.2 08/05/01 344.8 72.3 07/06/96 5.0 4.0 03/16/98 4.0 2.0 11/27/99 53.8 1.0 08/06/01 307.6 44.3 07/07/96 5.0 4.0 03/17/98 5.0 2.0 11/28/99 47.1 4.1 08/07/01 298.7 90.7 07/08/96 2.0 2.0 03/18/98 2.0 2.0 11/29/99 28.8 3.1 08/08/01 325.5 56.5 07/09/96 2.0 2.0 03/19/98 5.0 2.0 11/30/99 29.5 4.1 08/09/01 38.9 6.3 07/10/96 6.0 2.0 03/20/98 6.0 2.0 12/01/99 1413.6 4.1 08/10/01 325.9 29.2 07/11/96 1.0 2.0 03/21/98 10.0 2.0 12/02/99 64.4 9.8 08/11/01 313 44.3 07/12/96 5.0 2.0 03/22/98 10.0 2.0 12/03/99 113.7 9.5 08/12/01 248.1 74.9 07/13/96 4.0 2.0 03/23/98 6.0 2.0 12/04/99 119.8 3.1 08/13/01 387.3 238.2 07/14/96 2.0 2.0 03/24/98 6.0 2.0 12/05/99 115.3 7.4 08/14/01 159.7 41.6 SW Raw SW Raw SW Raw SW Raw SW Raw SW Raw SW Raw SW Raw Total E. coli Total E. coli Total E. coli Total E. coli DATE Coliform Coliform DATE Coliform Coliform DATE Coliform Coliform DATE Coliform Coliform 07/15/96 2.0 4.0 03/25/98 4.0 2.0 12/06/99 101.9 9.7 08/15/01 547.5 127.3 07/16/96 3.0 4.0 03/26/98 6.0 2.0 12/07/99 117.2 18.7 08/16/01 435.2 73.3 07/17/96 4.0 13.0 03/27/98 7.0 4.0 12/08/99 165.8 14.6 08/17/01 547.5 25.9 07/18/96 2.0 4.0 03/28/98 12.0 7.0 12/09/99 190.4 16.4 08/18/01 1413.6 37.9 07/19/96 2.0 4.0 03/29/98 10.0 13.0 12/10/99 142.1 15.8 08/19/01 2419.2 4.1 07/20/96 4.0 2.0 03/30/98 11.0 14.0 12/11/99 78 9.7 08/20/01 2419.2 46.4 07/21/96 2.0 2.0 03/31/98 8.0 80.0 12/12/99 123.6 12.0 08/21/01 2419.2 61.2 07/22/96 2.0 2.0 04/01/98 6.0 8.0 12/13/99 191.8 20.9 08/22/01 2419.2 18.5 07/23/96 3.0 2.0 04/02/98 13.0 140.0 12/14/99 131.7 9.7 08/23/01 2419.17 33.1 07/24/96 2.0 2.0 04/03/98 14.0 110.0 12/15/99 83.6 8.5 08/24/01 1203.31 44.1 07/25/96 1.0 2.0 04/04/98 11.0 80.0 12/16/99 60.5 7.2 08/25/01 727 14.5 07/26/96 1.0 2.0 04/05/98 14.0 140.0 12/17/99 214.3 27.8 08/26/01 35.2 35.4 07/27/96 1.0 2.0 04/06/98 7.0 30.0 12/18/99 139.1 26.5 08/27/01 272.3 31.4 07/28/96 1.0 2.0 04/07/98 9.0 22.0 12/19/99 78.4 13.2 08/28/01 101.4 2.0 07/29/96 1.0 2.0 04/08/98 8.0 8.0 12/20/99 53.8 8.6 08/29/01 204.6 20.3 07/30/96 2.0 2.0 04/09/98 9.0 11.0 12/21/99 88.4 8.6 08/30/01 166.9 18.7 07/31/96 2.0 4.0 04/10/98 8.0 4.0 12/22/99 81.3 8.6 08/31/01 195.6 11.0 08/01/96 3.0 8.0 04/11/98 9.0 17.0 12/23/99 141.4 15.6 09/01/01 517.2 10.8 08/02/96 4.0 2.0 04/12/98 7.0 50.0 12/24/99 141.4 15.6 09/02/01 365.4 15.6 08/03/96 3.0 2.0 04/13/98 7.0 2.0 12/25/99 59.1 10.9 09/03/01 387.3 38.4 08/04/96 2.0 2.0 04/14/98 7.0 4.0 12/26/99 157.6 5.2 09/04/01 360.9 5.2 08/05/96 2.0 4.0 04/15/98 7.0 2.0 12/27/99 42.2 9.7 09/05/01 344.8 3.1 08/06/96 5.0 13.0 04/16/98 9.0 2.0 12/28/99 155.3 6.3 09/06/01 648.8 15.8 08/07/96 2.0 2.0 04/17/98 9.0 2.0 12/29/99 18.9 5.2 09/07/01 547.5 25.9 08/08/96 6.0 2.0 04/18/98 6.0 8.0 12/30/99 31.8 6.3 09/08/01 344.8 24.3 08/09/96 4.0 2.0 04/19/98 10.0 4.0 12/31/99 39.3 2.0 09/09/01 686.7 10.8 08/10/96 4.0 4.0 04/20/98 5.0 2.0 01/01/00 09/10/01 686.7 22.6 08/11/96 1.0 2.0 04/21/98 5.0 2.0 01/02/00 26.2 5.2 09/11/01 770.1 6.3 08/12/96 3.0 8.0 04/22/98 3.0 2.0 01/03/00 86 4.1 09/12/01 1986.23 6.3 08/13/96 5.0 13.0 04/23/98 5.0 4.0 01/04/00 73.8 3.1 09/13/01 547.5 721.5 08/14/96 5.0 7.0 04/24/98 4.0 2.0 01/05/00 64.4 4.1 09/14/01 727 12.2 08/15/96 9.0 2.0 04/25/98 4.0 2.0 01/06/00 155.3 9.8 09/15/01 579.4 34.5 08/16/96 9.0 2.0 04/26/98 5.0 2.0 01/07/00 88.6 7.4 09/16/01 648.8 7.4 08/17/96 9.0 2.0 04/27/98 5.0 2.0 01/08/00 83.6 5.2 09/17/01 980.4 14.6 08/18/96 11.0 2.0 04/28/98 3.0 2.0 01/09/00 63.8 3.0 09/18/01 396.8 2.0 08/19/96 11.0 8.0 04/29/98 4.0 8.0 01/10/00 68.3 2.0 09/19/01 365.4 17.3 08/20/96 15.0 2.0 04/30/98 6.0 8.0 01/11/00 52.1 2.0 09/20/01 435.2 3.1 08/21/96 14.0 2.0 05/01/98 9.0 2.0 01/12/00 29.9 4.1 09/21/01 770.1 4.1 08/22/96 11.0 9.0 05/02/98 7.0 30.0 01/13/00 40.4 6.3 09/22/01 461.1 4.1 08/23/96 9.0 4.0 05/03/98 7.0 4.0 01/14/00 16.1 7.0 09/23/01 410.6 14.8 08/24/96 10.0 8.0 05/04/98 6.0 23.0 01/15/00 8.6 1.0 09/24/01 1413.6 22.6 08/25/96 8.0 2.0 05/05/98 6.0 13.0 01/16/00 24 4.1 09/25/01 686.7 13.1 08/26/96 8.0 2.0 05/06/98 6.0 17.0 01/17/00 17.5 5.7 09/26/01 2419.1 1.0 08/27/96 8.0 23.0 05/07/98 6.0 13.0 01/18/00 30.1 8.6 09/27/01 648.8 13.5 08/28/96 8.0 2.0 05/08/98 5.0 4.0 01/19/00 13.2 3.0 09/28/01 1413.6 44.1 08/29/96 11.0 2.0 05/09/98 2.0 2.0 01/20/00 27.8 17.5 09/29/01 1203.31 13.0 08/30/96 8.0 2.0 05/10/98 7.0 23.0 01/21/00 75.4 51.2 09/30/01 1299.65 14.8 08/31/96 10.0 2.0 05/11/98 8.0 11.0 01/22/00 114.5 9.2 10/01/01 1732.87 58.2 09/01/96 8.0 4.0 05/12/98 6.0 13.0 01/23/00 66.3 6.3 10/02/01 2419.1 22.8 09/02/96 8.0 4.0 05/13/98 4.0 8.0 01/24/00 90.7 21.3 10/03/01 2419.1 59.8 09/03/96 8.0 4.0 05/14/98 6.0 22.0 01/25/00 29.8 8.6 10/04/01 1046.2 37.9 09/04/96 5.0 2.0 05/15/98 6.0 30.0 01/26/00 75.9 25.9 10/05/01 980.4 15.8 09/05/96 5.0 4.0 05/16/98 11.0 50.0 01/27/00 86.7 23.1 10/06/01 488.4 21.8 09/06/96 2.0 2.0 05/17/98 7.0 4.0 01/28/00 344.8 56.5 10/07/01 275.5 13.2 09/07/96 2.0 2.0 05/18/98 2.0 4.0 01/29/00 101.9 61.3 10/08/01 120.7 27.2 09/08/96 3.0 2.0 05/19/98 3.0 8.0 01/30/00 387.3 40.8 10/09/01 307.6 3.1 09/09/96 1.0 2.0 05/20/98 6.0 4.0 01/31/00 190.4 41.3 10/10/01 172.6 10.8 09/10/96 2.0 2.0 05/21/98 7.0 4.0 02/01/00 920.8 214.3 10/11/01 290.9 6.3 09/11/96 1.0 2.0 05/22/98 6.0 4.0 02/02/00 1986.3 435.2 10/12/01 461.1 9.6 09/12/96 1.0 2.0 05/23/98 11.0 4.0 02/03/00 1203.3 547.5 10/13/01 1553.07 12.1 09/13/96 2.0 4.0 05/24/98 6.0 2.0 02/04/00 980.4 248.1 10/14/01 344.8 1 09/14/96 2.0 2.0 05/25/98 10.0 7.0 02/05/00 1413.6 435.2 10/15/01 248.1 8.6 09/15/96 3.0 4.0 05/26/98 6.0 17.0 02/06/00 2419.2 648.8 10/16/01 344.8 11.0 09/16/96 3.0 2.0 05/27/98 4.0 4.0 02/07/00 2419.2 816.4 10/17/01 1046.24 1.0 09/17/96 4.0 7.0 05/28/98 5.0 4.0 02/08/00 920.8 224.7 10/18/01 378.4 6.3 09/18/96 5.0 2.0 05/29/98 4.0 2.0 02/09/00 290.9 145.0 10/19/01 686.7 20.1 09/19/96 9.0 8.0 05/30/98 3.0 8.0 02/10/00 980.4 224.7 10/20/01 290.9 3.1 09/20/96 8.0 8.0 05/31/98 4.0 4.0 02/11/00 275.5 105.4 10/21/01 238.2 9.7 09/21/96 10.0 8.0 06/01/98 4.0 8.0 02/12/00 325.5 55.4 10/22/01 360.9 9.7 09/22/96 13.0 8.0 06/02/98 5.0 7.0 02/13/00 307.6 35.4 10/23/01 307.6 37.9 09/23/96 14.0 80.0 06/03/98 1.0 2.0 02/14/00 143.9 30.9 10/24/01 360.9 8.4 09/24/96 12.0 13.0 06/04/98 5.0 13.0 02/15/00 190.4 14.5 10/25/01 344.1 12.2 09/25/96 9.0 2.0 06/05/98 2.0 4.0 02/16/00 108.1 11.9 10/26/01 64.8 4.0 09/26/96 11.0 2.0 06/06/98 2.0 2.0 02/17/00 410.6 14.8 10/27/01 1203.31 12.2 09/27/96 11.0 4.0 06/07/98 3.0 4.0 02/18/00 2419.2 21.6 10/28/01 2417.17 21.6 09/28/96 2.0 2.0 06/08/98 4.0 13.0 02/19/00 2419.2 16.1 10/29/01 2419.2 21.6 09/29/96 9.0 50.0 06/09/98 7.0 50.0 02/20/00 1986.3 11.0 10/30/01 2419.2 20.1 09/30/96 10.0 50.0 06/10/98 6.0 23.0 02/21/00 980.4 151.5 10/31/01 1413.6 3.0 10/01/96 11.0 8.0 06/11/98 9.0 80.0 02/22/00 686.7 19.7 11/01/01 148.3 42.6 10/02/96 7.0 4.0 06/12/98 9.0 17.0 02/23/00 378.4 27.8 11/02/01 2419.2 6.3 10/03/96 6.0 50.0 06/13/98 8.0 80.0 02/24/00 196.8 20.9 11/03/01 2419.2 31.7 10/04/96 6.0 14.0 06/14/98 8.0 60.0 02/25/00 140.1 20.1 11/04/01 2419.2 36.1 10/05/96 5.0 17.0 06/15/98 2.0 4.0 02/26/00 123.6 18.7 11/05/01 2419.2 12.0 10/06/96 5.0 4.0 06/16/98 3.0 7.0 02/27/00 143.9 38.4 11/06/01 2419.2 28.8 10/07/96 7.0 22.0 06/17/98 6.0 8.0 02/28/00 55.6 8.4 11/07/01 2419.2 12.1 10/08/96 8.0 80.0 06/18/98 8.0 22.0 02/29/00 70.3 4.1 11/08/01 2419.2 1.0 10/09/96 6.0 30.0 06/19/98 4.0 2.0 03/01/00 40.4 8.6 11/09/01 770.1 1.0 10/10/96 6.0 4.0 06/20/98 6.0 4.0 03/02/00 74.9 14.6 11/10/01 1203.31 1 10/11/96 5.0 13.0 06/21/98 1.0 2.0 03/03/00 49.5 13.4 11/11/01 613.1 1.0 10/12/96 3.0 4.0 06/22/98 7.0 11.0 03/04/00 344.8 12.2 11/12/01 488.4 1 10/13/96 3.0 2.0 06/23/98 7.0 11.0 03/05/00 387.3 7.3 11/13/01 1203.31 3.0 10/14/96 3.0 4.0 06/24/98 2.0 2.0 03/06/00 410.6 4.1 11/14/01 2419.2 16.0 10/15/96 6.0 8.0 06/25/98 3.0 2.0 03/07/00 193.5 6.3 11/15/01 1299.65 1 10/16/96 1.0 2.0 06/26/98 4.0 2.0 03/08/00 235.9 9.7 11/16/01 2419.2 7.4 10/17/96 8.0 30.0 06/27/98 5.0 4.0 03/09/00 101.4 3.1 11/17/01 1553.07 4.1 10/18/96 4.0 2.0 06/28/98 5.0 4.0 03/10/00 228.2 8.5 11/18/01 2419.2 5.2 10/19/96 6.0 30.0 06/29/98 8.0 7.0 03/11/00 150 6.3 11/19/01 2419.2 16.9 10/20/96 6.0 23.0 06/30/98 4.0 2.0 03/12/00 143.9 4.1 11/20/01 2419.2 16.0 SW Raw SW Raw SW Raw SW Raw SW Raw SW Raw SW Raw SW Raw Total E. coli Total E. coli Total E. coli Total E. coli DATE Coliform Coliform DATE Coliform Coliform DATE Coliform Coliform DATE Coliform Coliform 10/21/96 2.0 2.0 07/01/98 8.0 2.0 03/13/00 77.6 3.1 11/21/01 2419.2 14.6 10/22/96 4.0 11.0 07/02/98 6.0 2.0 03/14/00 85.7 4.1 11/22/01 2419.2 23.3 10/23/96 2.0 2.0 07/03/98 2.0 2.0 03/15/00 79.4 1.0 11/23/01 2419.2 10.9 10/24/96 4.0 8.0 07/04/98 7.0 2.0 03/16/00 172.2 3.1 11/24/01 2419.2 22.3 10/25/96 4.0 11.0 07/05/98 8.0 8.0 03/17/00 93 2.0 11/25/01 2419.2 77.1 10/26/96 6.0 8.0 07/06/98 13.0 17.0 03/18/00 75.4 3.1 11/26/01 2419.2 52.0 10/27/96 4.0 17.0 07/07/98 5.0 4.0 03/19/00 186 4.1 11/27/01 2419.2 45.7 10/28/96 5.0 17.0 07/08/98 4.0 4.0 03/20/00 128.1 5.1 11/28/01 2419.2 13.5 10/29/96 5.0 17.0 07/09/98 7.0 2.0 03/21/00 547.5 12.0 11/29/01 2419.2 55.4 10/30/96 4.0 13.0 07/10/98 6.0 4.0 03/22/00 2419.17 4.1 11/30/01 2419.2 151.5 10/31/96 6.0 30.0 07/11/98 10.0 4.0 03/23/00 1732.87 2.0 12/02/01 2419.2 52.9 11/01/96 5.0 13.0 07/12/98 6.0 4.0 03/24/00 1732.87 4.1 12/03/01 2419.17 51.2 11/02/96 2.0 2.0 07/13/98 7.0 2.0 03/25/00 2419.2 7.4 12/04/01 2419.17 153.9 11/03/96 6.0 17.0 07/14/98 10.0 140.0 03/26/00 2419.2 6.3 12/05/01 261.3 14.5 11/04/96 6.0 17.0 07/15/98 7.0 27.0 03/27/00 2419.2 1.0 12/06/01 410.6 78.6 11/05/96 6.0 23.0 07/16/98 3.0 4.0 03/28/00 2419.2 3.1 12/07/01 461.1 93.3 11/06/96 8.0 50.0 07/17/98 3.0 4.0 03/29/00 2419.2 12.1 12/08/01 307.6 111.2 11/07/96 11.0 23.0 07/18/98 7.0 13.0 03/30/00 2419.2 3.1 12/09/01 410.6 116.2 11/08/96 6.0 7.0 07/19/98 5.0 4.0 03/31/00 2419.2 3.1 12/10/01 325.5 45.0 11/09/96 5.0 23.0 07/20/98 9.0 23.0 04/01/00 2419.2 5.2 12/11/01 275.5 115.3 11/10/96 6.0 8.0 07/21/98 4.0 9.0 04/02/00 2419.2 3.1 12/12/01 387.3 72.3 11/11/96 3.0 4.0 07/22/98 2.0 2.0 04/03/00 2419.17 7.3 12/13/01 248.9 561.0 11/12/96 3.0 4.0 07/23/98 1.0 2.0 04/04/00 2419.2 20.3 12/14/01 290.9 72.3 11/13/96 1.0 4.0 07/24/98 6.0 30.0 04/05/00 2419.2 21.3 12/15/01 325.5 57.3 11/14/96 5.0 23.0 07/25/98 4.0 7.0 04/06/00 1119.85 3.0 12/16/01 153.9 38.9 11/15/96 2.0 4.0 07/26/98 3.0 2.0 04/07/00 1119.85 8.4 12/17/01 106.7 15.8 11/16/96 6.0 17.0 07/27/98 1.0 2.0 04/08/00 686.7 16.1 12/18/01 117 26.5 11/17/96 6.0 17.0 07/28/98 5.0 4.0 04/09/00 547.5 13.5 12/19/01 149.3 39.6 11/18/96 5.0 17.0 07/29/98 4.0 11.0 04/10/00 298.7 4.1 12/20/01 143 6.3 11/19/96 4.0 7.0 07/30/98 9.0 50.0 04/11/00 275.5 13.5 12/21/01 141.4 123.0 11/20/96 5.0 13.0 07/31/98 2.0 2.0 04/12/00 214.2 22.8 12/22/01 11/21/96 6.0 13.0 08/01/98 4.0 4.0 04/13/00 435.2 24.3 12/23/01 11/22/96 6.0 23.0 08/02/98 7.0 50.0 04/14/00 142.1 10.9 12/24/01 11/23/96 8.0 50.0 08/03/98 5.0 7.0 04/15/00 218.7 6.2 12/25/01 49.6 17.3 11/24/96 9.0 90.0 08/04/98 2.0 4.0 04/16/00 198.9 15.8 12/26/01 109.2 41.0 11/25/96 6.0 8.0 08/05/98 2.0 4.0 04/17/00 71.2 9.6 12/27/01 63.7 18.9 11/26/96 6.0 30.0 08/06/98 2.0 2.0 04/18/00 90.6 24.9 12/28/01 115.3 22.8 11/27/96 5.0 8.0 08/07/98 1.0 2.0 04/19/00 65.7 13.2 12/29/01 11/28/96 5.0 23.0 08/08/98 4.0 4.0 04/20/00 45.5 5.2 12/30/01 11/29/96 5.0 4.0 08/09/98 2.0 2.0 04/21/00 16 1 12/31/01 11/30/96 6.0 23.0 08/10/98 4.0 8.0 04/22/00 43.9 5.2 01/02/02 20 6.0 12/01/96 5.0 23.0 08/11/98 5.0 13.0 04/23/00 41.6 2.0 01/14/02 120 120.0 12/02/96 6.0 30.0 08/12/98 5.0 23.0 04/24/00 32.3 6.3 01/21/02 60 10.0 12/03/96 8.0 22.0 08/13/98 2.0 4.0 04/25/00 27.2 4.1 01/28/02 60 50.0 12/04/96 7.0 9.0 08/14/98 1.0 2.0 04/26/00 23.1 3.1 02/04/02 70 52.0 12/05/96 7.0 40.0 08/15/98 1.0 2.0 04/27/00 32.3 8.6 02/11/02 40 31.0 12/06/96 7.0 13.0 08/16/98 5.0 2.0 04/28/00 35.5 3.1 02/18/02 100 53.0 12/07/96 7.0 50.0 08/17/98 3.0 4.0 04/29/00 16 4.1 02/25/02 50 45.0 12/08/96 6.0 23.0 08/18/98 4.0 13.0 04/30/00 25 7.3 03/04/02 90 57.0 12/09/96 11.0 17.0 08/19/98 6.0 23.0 05/01/00 27.5 10.9 03/12/02 130 130.0 12/10/96 13.0 300.0 08/20/98 3.0 23.0 05/02/00 62.7 18.3 03/18/02 100 51.0 12/11/96 14.0 1600.0 08/21/98 1.0 2.0 05/03/00 35 15.8 03/25/02 10 10.0 12/12/96 9.0 130.0 08/22/98 1.0 2.0 05/04/00 93.3 14.6 04/01/02 120 94.0 12/13/96 12.0 220.0 08/23/98 4.0 2.0 05/05/00 85.7 24.0 04/08/02 140 17.0 12/14/96 11.0 300.0 08/24/98 2.0 2.0 05/06/00 80.9 44.8 04/15/02 220 135.0 12/15/96 13.0 900.0 08/25/98 2.0 2.0 05/07/00 133.3 46.4 04/22/02 150 99.0 12/16/96 11.0 170.0 08/26/98 1.0 2.0 05/08/00 145 44.8 04/29/02 150 135.0 12/17/96 9.0 140.0 08/27/98 6.0 22.0 05/09/00 93.2 21.6 05/06/02 130 86.0 12/18/96 11.0 4.0 08/28/98 5.0 8.0 05/10/00 201.4 70.3 05/13/02 140 108.0 12/19/96 10.0 80.0 08/29/98 9.0 4.0 05/11/00 96 44.8 05/20/02 100 74.0 12/20/96 10.0 170.0 08/30/98 12.0 8.0 05/12/00 59.4 34.5 05/28/02 100 68.0 12/21/96 7.0 50.0 08/31/98 10.0 2.0 05/13/00 14.5 5.2 06/03/02 80 87.0 12/22/96 7.0 50.0 09/01/98 10.0 4.0 05/14/00 5.2 3.1 06/10/02 150 9.0 12/23/96 9.0 50.0 09/02/98 9.0 2.0 05/15/00 5.2 1 06/18/02 100 56.0 12/24/96 10.0 140.0 09/03/98 13.0 4.0 05/16/00 3.1 1 06/24/02 70 40.0 12/25/96 6.0 21.0 09/04/98 2.0 2.0 05/17/00 248.1 58.2 07/01/02 110 92.0 12/26/96 10.0 110.0 09/05/98 13.0 4.0 05/18/00 980.4 75.9 07/08/02 80 65.0 12/27/96 6.0 17.0 09/06/98 12.0 9.0 05/19/00 290.9 32.7 07/16/02 40 28.0 12/28/96 7.0 30.0 09/07/98 10.0 2.0 05/20/00 62 23.8 07/23/02 10 16.0 12/29/96 9.0 50.0 09/08/98 5.0 2.0 05/21/00 866.4 39.9 07/29/02 110 75.0 12/30/96 9.0 21.0 09/09/98 2.0 2.0 05/22/00 325.5 65.7 08/05/02 140 4.0 12/31/96 7.0 30.0 09/10/98 8.0 2.0 05/23/00 131.3 33.2 08/12/02 140 102.0 01/01/97 3.0 4.0 09/11/98 5.0 2.0 05/24/00 248.1 59.4 08/19/02 110 79.0 01/02/97 5.0 23.0 09/12/98 2.0 2.0 05/25/00 142.1 55.6 08/26/02 9 71.0 01/03/97 6.0 30.0 09/13/98 5.0 2.0 05/26/00 156.4 86.2 09/02/02 430 17.0 01/04/97 8.0 80.0 09/14/98 6.0 2.0 05/27/00 435.2 145.0 09/09/02 80 66.0 01/05/97 7.0 50.0 09/15/98 7.0 2.0 05/28/00 160.7 52.9 09/16/02 150 65.0 01/06/97 9.0 70.0 09/16/98 6.0 2.0 05/29/00 275.5 69.4 09/23/02 110 48.0 01/07/97 10.0 110.0 09/17/98 6.0 2.0 05/30/00 166.4 45.7 09/30/02 120 18.0 01/08/97 5.0 23.0 09/18/98 12.0 2.0 05/31/00 155.3 57.6 10/07/02 60 49.0 01/09/97 6.0 30.0 09/19/98 10.0 2.0 06/01/00 201.4 57.6 10/14/02 100 17.0 01/10/97 7.0 50.0 09/20/98 13.0 2.0 06/02/00 579.4 95.9 10/21/02 80 35.0 01/11/97 6.0 17.0 09/21/98 5.0 2.0 06/03/00 54.7 14.1 10/28/02 160 99.0 01/12/97 6.0 2.0 09/22/98 13.0 2.0 06/04/00 260.2 46.4 11/04/02 210 177.0 01/13/97 8.0 30.0 09/23/98 11.0 2.0 06/05/00 727 70.3 11/11/02 90 188.0 01/14/97 7.0 50.0 09/24/98 12.0 4.0 06/06/00 547.5 53.8 11/18/02 250 206.0 01/15/97 7.0 170.0 09/25/98 12.0 2.0 06/07/00 866.4 25.6 11/25/02 140 90.0 01/16/97 9.0 23.0 09/26/98 7.0 2.0 06/08/00 816.4 58.3 12/02/02 180 76.0 01/17/97 8.0 30.0 09/27/98 10.0 13.0 06/09/00 613.1 52.0 12/09/02 120 95.0 01/18/97 7.0 22.0 09/28/98 11.0 23.0 06/10/00 344.2 44.1 12/16/02 290 115.0 01/19/97 6.0 17.0 09/29/98 10.0 2.0 06/11/00 579.4 37.3 12/23/02 270 105.0 01/20/97 7.0 30.0 09/30/98 8.0 2.0 06/12/00 613.1 101.4 12/30/02 30 9.0 01/21/97 4.0 2.0 10/01/98 10.0 17.0 06/13/00 727 35.9 01/07/03 380 182.0 01/22/97 8.0 7.0 10/02/98 9.0 7.0 06/14/00 517.2 31.8 01/14/03 120 46.0 01/23/97 7.0 30.0 10/03/98 8.0 2.0 06/15/00 435.2 27.2 01/20/03 100 41.0 01/24/97 9.0 30.0 10/04/98 9.0 4.0 06/16/00 307.6 29.5 01/27/03 60 26.0 01/25/97 11.0 50.0 10/05/98 5.0 4.0 06/17/00 727 26.9 02/03/03 100 3.0 01/26/97 6.0 23.0 10/06/98 7.0 11.0 06/18/00 816.4 31.6 02/10/03 0 42.0 SW Raw SW Raw SW Raw SW Raw SW Raw SW Raw SW Raw SW Raw Total E. coli Total E. coli Total E. coli Total E. coli DATE Coliform Coliform DATE Coliform Coliform DATE Coliform Coliform DATE Coliform Coliform 01/27/97 5.0 23.0 10/07/98 2.0 2.0 06/19/00 1119.85 26.2 02/17/03 90 38.0 01/28/97 10.0 4.0 10/08/98 8.0 2.0 06/20/00 1413.6 45.0 02/24/03 170 64.0 01/29/97 7.0 13.0 10/09/98 8.0 2.0 06/21/00 2419.17 52.1 03/03/03 10 11.0 01/30/97 9.0 17.0 10/10/98 3.0 2.0 06/22/00 1986.28 24.0 03/11/03 80 63.0 01/31/97 11.0 17.0 10/11/98 7.0 2.0 06/23/00 2419.17 16.1 03/17/03 50 65.0 02/01/97 10.0 26.0 10/12/98 11.0 2.0 06/24/00 1413.6 22.6 03/24/03 160 71.0 02/02/97 6.0 17.0 10/13/98 10.0 2.0 06/25/00 1299.65 22.6 03/31/03 30 15.0 02/03/97 11.0 30.0 10/14/98 12.0 2.0 06/26/00 1732.87 30.5 04/07/03 20 2.0 02/04/97 11.0 23.0 10/15/98 9.0 11.0 06/27/00 648.8 16.1 04/14/03 140 63.0 02/05/97 10.0 13.0 10/16/98 6.0 4.0 06/28/00 613.1 18.1 04/21/03 100 28.0 02/06/97 8.0 7.0 10/17/98 4.0 2.0 06/29/00 93.3 28.8 04/28/03 20 28.0 02/07/97 8.0 2.0 10/18/98 9.0 2.0 06/30/00 106.7 229.9 05/05/03 10 12.0 02/08/97 10.0 22.0 10/19/98 12.0 11.0 07/01/00 63.7 24.9 05/12/03 80 44.0 02/09/97 9.0 23.0 10/20/98 10.0 2.0 07/02/00 2419.2 72.3 05/19/03 100 30.0 02/10/97 7.0 14.0 10/21/98 15.0 90.0 07/03/00 152.9 90.9 05/27/03 120 35.0 02/11/97 8.0 30.0 10/22/98 11.0 2.0 07/04/00 25.9 2.0 06/03/03 50 3.0 02/12/97 8.0 23.0 10/23/98 11.0 2.0 07/05/00 47.9 4.1 06/09/03 70 22.0 02/13/97 9.0 80.0 10/24/98 11.0 2.0 07/06/00 77.1 5.2 06/16/03 120 38.0 02/14/97 9.0 17.0 10/25/98 11.0 2.0 07/07/00 60.5 9.8 06/23/03 130 50.0 02/15/97 9.0 30.0 10/26/98 13.0 2.0 07/08/00 87.8 1.0 06/30/03 10 9.0 02/16/97 8.0 22.0 10/27/98 11.0 2.0 07/09/00 135.4 7.3 07/07/03 120 14.0 02/17/97 5.0 2.0 10/28/98 11.0 2.0 07/10/00 56.5 9.7 07/14/03 120 5.0 02/18/97 10.0 12.0 10/29/98 8.0 2.0 07/11/00 28.9 3.1 07/21/03 120 23.0 02/19/97 10.0 80.0 10/30/98 2.0 2.0 07/12/00 151.5 12.1 07/29/03 100 18.0 02/20/97 13.0 90.0 10/31/98 2.0 2.0 07/13/00 193.5 10.9 08/05/03 70 45.0 02/21/97 8.0 80.0 11/01/98 8.0 2.0 07/14/00 365.4 4.1 08/11/03 60 24.0 02/22/97 13.0 30.0 11/02/98 6.0 8.0 07/15/00 155.3 7.4 08/18/03 170 57.0 02/23/97 8.0 30.0 11/03/98 4.0 2.0 07/16/00 160.7 4.1 08/25/03 30 1.0 02/24/97 11.0 30.0 11/04/98 6.0 17.0 07/17/00 613.1 8.5 09/02/03 50 16.0 02/25/97 9.0 50.0 11/05/98 4.0 4.0 07/18/00 195.6 2.0 09/09/03 7 5.0 02/26/97 7.0 8.0 11/06/98 6.0 4.0 07/19/00 62.4 8.6 09/15/03 130 3.0 02/27/97 10.0 4.0 11/07/98 8.0 14.0 07/20/00 105 9.6 09/22/03 170 2.0 02/28/97 9.0 11.0 11/08/98 7.0 13.0 07/21/00 248.1 17.5 09/29/03 100 4.0 03/01/97 6.0 23.0 11/09/98 10.0 11.0 07/22/00 159.7 9.8 10/07/03 30 4.0 03/02/97 10.0 27.0 11/10/98 7.0 50.0 07/23/00 118.7 5.2 10/13/03 50 10.0 03/03/97 7.0 8.0 11/11/98 8.0 12.0 07/24/00 209.8 12.2 10/20/03 170 8.0 03/04/97 7.0 30.0 11/12/98 9.0 23.0 07/25/00 980.4 3.1 10/29/03 100 4.0 03/05/97 7.0 30.0 11/13/98 3.0 4.0 07/26/00 1203.31 22.8 11/04/03 50 1 03/06/97 9.0 23.0 11/14/98 2.0 4.0 07/27/00 1299.65 6.3 11/10/03 140 1 03/07/97 6.0 4.0 11/15/98 5.0 23.0 07/28/00 579.4 5.2 11/17/03 20 1 03/08/97 7.0 4.0 11/16/98 6.0 30.0 07/29/00 204.6 2.0 11/24/03 20 1 03/09/97 6.0 4.0 11/17/98 6.0 30.0 07/30/00 686.7 3.0 12/01/03 20 1 03/10/97 6.0 2.0 11/18/98 6.0 9.0 07/31/00 142.1 1 12/09/03 10 16 03/11/97 3.0 2.0 11/19/98 4.0 13.0 08/01/00 48.3 1.0 12/15/03 50 6 03/12/97 1.0 2.0 11/20/98 3.0 4.0 08/02/00 81.6 1.0 12/22/03 10 3 03/13/97 7.0 2.0 11/21/98 6.0 11.0 08/03/00 83.6 1 12/29/03 30 1 03/14/97 3.0 2.0 11/22/98 5.0 4.0 08/04/00 41 2.0 01/05/04 50 6 03/15/97 5.0 2.0 11/23/98 4.0 13.0 08/05/00 41.3 1 01/13/04 20 18 03/16/97 6.0 8.0 11/24/98 1.0 2.0 08/06/00 53.8 1 01/19/04 50 26 03/17/97 6.0 2.0 11/25/98 3.0 4.0 08/07/00 67 2.0 01/26/04 1 4 03/18/97 5.0 4.0 11/26/98 1.0 2.0 08/08/00 80.5 1.0 02/02/04 60 30 03/19/97 12.0 4.0 11/27/98 2.0 2.0 08/09/00 153.9 1 02/10/04 280 7 03/20/97 3.0 2.0 11/28/98 4.0 2.0 08/10/00 133.3 3.0 02/16/04 150 5 03/21/97 3.0 2.0 11/29/98 1.0 2.0 08/11/00 148.3 1.0 02/24/04 100 18 03/22/97 3.0 2.0 11/30/98 2.0 2.0 08/12/00 67 1.0 03/01/04 190 74 03/23/97 7.0 8.0 12/01/98 4.0 13.0 08/13/00 85.5 3.1 03/08/04 90 8 03/24/97 6.0 9.0 12/02/98 3.0 2.0 08/14/00 85.5 1.0 03/15/04 30 3 03/25/97 9.0 4.0 12/03/98 1.0 2.0 08/15/00 101.4 7.4 03/22/04 20 2 03/26/97 6.0 4.0 12/04/98 2.0 4.0 08/16/00 166.9 12.1 03/29/04 70 3 03/27/97 8.0 7.0 12/05/98 4.0 13.0 08/17/00 235.9 14.6 04/05/04 7 3 03/28/97 5.0 23.0 12/06/98 3.0 4.0 08/18/00 48.7 7.4 04/12/04 70 1 03/29/97 4.0 4.0 12/07/98 2.0 4.0 08/19/00 105.4 6.3 04/19/04 10 1 03/30/97 7.0 30.0 12/08/98 1.0 2.0 08/20/00 204.6 9.0 04/26/04 70 2 03/31/97 4.0 4.0 12/09/98 7.0 7.0 08/21/00 102.2 13.5 05/03/04 30 14 04/01/97 4.0 4.0 12/10/98 2.0 2.0 08/22/00 344.8 13.5 05/10/04 90 38 04/02/97 6.0 11.0 12/11/98 6.0 17.0 08/23/00 579.4 8.6 05/17/04 110 14 04/03/97 8.0 4.0 12/12/98 5.0 4.0 08/24/00 275.5 2.0 05/24/04 240 73 04/04/97 7.0 4.0 12/13/98 3.0 4.0 08/25/00 2419.2 9.8 06/01/04 30 30 04/05/97 3.0 2.0 12/14/98 2.0 4.0 08/26/00 248.1 5.2 06/07/04 60 30 04/06/97 3.0 4.0 12/15/98 2.0 4.0 08/27/00 307.6 9.8 06/14/04 80 4 04/07/97 7.0 2.0 12/16/98 1.0 2.0 08/28/00 344.8 16.0 06/21/04 100 33 04/08/97 9.0 4.0 12/17/98 3.0 7.0 08/29/00 435.2 4.1 06/28/04 50 9 04/09/97 3.0 8.0 12/18/98 3.0 8.0 08/30/00 298.7 21.3 07/06/04 60 11 04/10/97 2.0 2.0 12/19/98 2.0 2.0 08/31/00 261.3 9.0 07/12/04 50 3 04/11/97 3.0 4.0 12/20/98 1.0 2.0 09/01/00 86.2 3.0 07/19/04 60 5 04/12/97 7.0 9.0 12/21/98 3.0 2.0 09/02/00 157.6 8.6 07/26/04 60 6 04/13/97 5.0 4.0 12/22/98 2.0 2.0 09/03/00 261.3 3.1 08/02/04 100 4 04/14/97 6.0 22.0 12/23/98 2.0 2.0 09/04/00 184.2 2.0 08/09/04 13 2 04/15/97 6.0 8.0 12/24/98 5.0 8.0 09/05/00 488.4 3.1 08/17/04 50 3 04/16/97 8.0 13.0 12/25/98 2.0 2.0 09/06/00 1732.87 1.0 08/23/04 70 18 04/17/97 7.0 50.0 12/26/98 2.0 4.0 09/07/00 980.4 1.0 08/31/04 60 24 04/18/97 5.0 2.0 12/27/98 1.0 2.0 09/08/00 261.3 1.0 09/07/04 20 9 04/19/97 6.0 30.0 12/28/98 1.0 2.0 09/09/00 727 30.5 09/13/04 8 5 04/20/97 5.0 8.0 12/29/98 1.0 2.0 09/10/00 816.4 3.1 09/20/04 20 5 04/21/97 11.0 300.0 12/30/98 3.0 7.0 09/11/00 727 5.2 09/27/04 30 6 04/22/97 6.0 30.0 12/31/98 4.0 8.0 09/12/00 435.2 2.0 10/04/04 180 13 04/23/97 4.0 23.0 01/01/99 2.0 4.0 09/13/00 435.2 7.4 10/11/04 120 14 04/24/97 8.0 50.0 01/02/99 1.0 2.0 09/14/00 290.9 4.1 10/18/04 70 45 04/25/97 8.0 50.0 01/03/99 1.0 2.0 09/15/00 387.3 4.1 10/25/04 70 2 04/26/97 8.0 30.0 01/04/99 2.0 2.0 09/16/00 648.8 1.0 11/01/04 70 5 04/27/97 5.0 23.0 01/05/99 5.0 4.0 09/17/00 613.1 5.2 11/08/04 100 9 04/28/97 13.0 50.0 01/06/99 1.0 2.0 09/18/00 613.1 23.3 11/15/04 30 4 04/29/97 14.0 23.0 01/07/99 6.0 13.0 09/19/00 1203.31 1.0 11/22/04 20 14 04/30/97 11.0 140.0 01/08/99 7.0 26.0 09/20/00 1732.87 3.1 11/29/04 120 49 05/01/97 8.0 50.0 01/09/99 5.0 8.0 09/21/00 410.6 3.1 12/06/04 40 41 05/02/97 10.0 240.0 01/10/99 4.0 4.0 09/22/00 547.5 2.0 12/14/04 10 6 05/03/97 12.0 33.0 01/11/99 2.0 2.0 09/23/00 435.2 2.0 12/20/04 30 7 05/04/97 12.0 110.0 01/12/99 3.0 7.0 09/24/00 613.1 9.7 12/27/04 10 8 SW Raw SW Raw SW Raw SW Raw SW Raw SW Raw SW Raw SW Raw Total E. coli Total E. coli Total E. coli Total E. coli DATE Coliform Coliform DATE Coliform Coliform DATE Coliform Coliform DATE Coliform Coliform 05/05/97 8.0 30.0 01/13/99 4.0 4.0 09/25/00 224.7 4.1 01/04/05 100 40 05/06/97 6.0 11.0 01/14/99 1.0 2.0 09/26/00 160.7 4.1 01/10/05 50 17 05/07/97 6.0 13.0 01/15/99 3.0 4.0 09/27/00 260.2 2.0 01/17/05 90 9 05/08/97 7.0 30.0 01/16/99 3.0 2.0 09/28/00 365.4 3.1 01/24/05 40 2 05/09/97 5.0 13.0 01/17/99 5.0 11.0 09/29/00 613.1 8.6 01/31/05 20 5 05/10/97 10.0 50.0 01/18/99 3.0 8.0 09/30/00 648.8 2.0 02/07/05 10 3 05/11/97 11.0 280.0 01/19/99 2.0 2.0 10/01/00 816.4 4.1 02/14/05 80 0 05/12/97 10.0 50.0 01/20/99 7.0 2.0 10/02/00 980.4 11.0 02/22/05 100 12 05/13/97 8.0 50.0 01/21/99 5.0 4.0 10/03/00 1119.85 7.2 02/28/05 10 4 05/14/97 5.0 50.0 01/22/99 7.0 11.0 10/04/00 2419.17 3.0 03/07/05 30 10 05/15/97 9.0 70.0 01/23/99 7.0 11.0 10/05/00 1299.65 11.0 03/14/05 2 2 05/16/97 5.0 8.0 01/24/99 5.0 8.0 10/06/00 2419.2 8.5 03/21/05 1 4 05/17/97 9.0 30.0 01/25/99 5.0 7.0 10/07/00 2419.2 16.1 03/28/05 11 05/18/97 9.0 50.0 01/26/99 4.0 4.0 10/08/00 866.4 4.1 04/04/05 40 24 05/19/97 8.0 50.0 01/27/99 8.0 50.0 10/09/00 980.4 4.1 04/11/05 20 13 05/20/97 6.0 17.0 01/28/99 5.0 8.0 10/10/00 344.8 2.0 04/18/05 10 12 05/21/97 4.0 8.0 01/29/99 5.0 4.0 10/11/00 201.4 1.0 04/25/05 60 35 05/22/97 5.0 2.0 01/30/99 5.0 13.0 10/12/00 365.4 4.0 05/02/05 1 3 05/23/97 4.0 2.0 01/31/99 7.0 8.0 10/13/00 261.3 3.1 05/09/05 10 25 05/24/97 5.0 23.0 02/01/99 7.0 50.0 10/14/00 275.5 2.0 05/16/05 20 13 05/25/97 7.0 2.0 02/02/99 3.0 2.0 10/15/00 117.8 4.1 05/23/05 1 8 05/26/97 5.0 7.0 02/03/99 5.0 2.0 10/16/00 178.5 05/31/05 1 11 05/27/97 5.0 4.0 02/04/99 5.0 13.0 10/17/00 137.6 1.0 06/06/05 304 46 05/28/97 10.0 23.0 02/05/99 7.0 23.0 10/18/00 178.9 5.2 06/14/05 10 11 05/29/97 12.0 4.0 02/06/99 6.0 4.0 10/19/00 186 1.0 06/20/05 120 43 05/30/97 6.0 8.0 02/07/99 6.0 7.0 10/20/00 365.4 13.5 06/27/05 50 35 05/31/97 11.0 23.0 02/08/99 5.0 8.0 10/21/00 160.7 4.1 07/05/05 10 3 06/01/97 7.0 22.0 02/09/99 2.0 2.0 10/22/00 410.6 10.9 07/11/05 7 9 06/02/97 15.0 30.0 02/11/99 238 5.2 10/23/00 209.8 6.3 07/19/05 30 4 06/03/97 15.0 8.0 02/12/99 121 6.3 10/24/00 224.7 14.6 07/25/05 40 11 06/04/97 10.0 30.0 02/13/99 77.1 5.2 10/25/00 387.3 56.3 08/01/05 430 25 06/05/97 4.0 4.0 02/14/99 59.1 5.2 10/26/00 61.3 46.5 08/08/05 70 13 06/06/97 8.0 23.0 02/16/99 60.1 3.1 10/27/00 93.3 7.3 08/15/05 30 1 06/07/97 5.0 80.0 02/17/99 104.3 4.1 10/28/00 93.3 08/22/05 40 54 06/08/97 3.0 8.0 02/18/99 28.5 4.1 10/29/00 78.5 1.0 08/29/05 2 3 06/09/97 3.0 4.0 02/19/99 36.4 3.1 10/30/00 78.9 7.4 09/07/05 1 1 06/10/97 4.0 2.0 02/20/99 28.1 1.0 10/31/00 141.4 1.0 09/12/05 30 14 06/11/97 4.0 2.0 02/21/99 116.9 63.8 11/01/00 206.3 1.0 09/19/05 30 6 06/12/97 7.0 4.0 02/22/99 47.2 5.2 11/02/00 235.9 10.2 09/26/05 8 9 06/13/97 2.0 2.0 02/23/99 275.5 9.7 11/03/00 686.7 3.0 10/03/05 110 46 06/14/97 3.0 11.0 02/24/99 461.1 14.5 11/04/00 410.6 1 10/10/05 70 4 06/15/97 3.0 2.0 02/25/99 79.4 6.3 11/05/00 248.1 1.0 10/17/05 20 5 06/16/97 5.0 4.0 02/26/99 63.1 1.0 11/06/00 461.1 3.1 10/24/05 18 2 06/17/97 4.0 2.0 02/27/99 104.3 6.3 11/07/00 193.5 3.1 10/31/05 10 4 06/18/97 11.0 2.0 02/28/99 178.5 2.0 11/08/00 275.5 1.0 11/08/05 220 2 06/19/97 10.0 4.0 03/01/99 307.6 9.8 11/09/00 488.4 7.4 11/14/05 10 4 06/20/97 10.0 2.0 03/02/99 547.6 9.8 11/10/00 312.3 3.1 11/21/05 40 1 06/21/97 5.0 4.0 03/03/99 2419.2 17.1 11/11/00 218.7 4.1 11/28/05 110 16 06/22/97 6.0 4.0 03/04/99 2419.2 27.2 11/12/00 325.5 7.4 12/05/05 20 5 06/23/97 5.0 13.0 03/05/99 2419.2 8.6 11/13/00 235.9 6.3 12/12/05 80 6 06/24/97 7.0 4.0 03/06/99 2419.2 9.8 11/14/00 579.4 6.2 12/19/05 30 17 06/25/97 9.0 13.0 03/07/99 2419.17 4.1 11/15/00 275.5 3.1 12/27/05 100 68 06/26/97 8.0 17.0 03/08/99 2419.2 13.4 11/16/00 547.5 5.2 01/03/06 100 34 06/27/97 7.0 30.0 03/09/99 1413.6 12.2 11/17/00 920.8 15.5 01/09/06 110 18 06/28/97 7.0 14.0 03/10/99 1986.28 4.1 11/18/00 547.5 11.0 01/16/06 50 30 06/29/97 4.0 2.0 03/11/99 727 1.0 11/19/00 325.5 7.4 01/23/06 90 28 06/30/97 4.0 4.0 03/12/99 307.6 36.8 11/20/00 1046.2 3.0 01/30/06 60 8 07/01/97 5.0 4.0 03/13/99 980.4 19.0 11/21/00 461.1 6.3 02/06/06 40 24 07/02/97 5.0 2.0 03/14/99 517.2 65.7 11/22/00 2419.2 30.9 02/13/06 60 18 07/03/97 3.0 4.0 03/15/99 307.6 36.8 11/23/00 2419.2 30.5 02/20/06 8 3 07/04/97 3.0 4.0 03/16/99 435.2 40.4 11/24/00 2419.2 23.0 02/27/06 7 4 07/05/97 1.0 2.0 03/17/99 156.5 9.8 11/25/00 2419.2 58.3 03/06/06 20 1 07/06/97 2.0 2.0 03/18/99 111.9 35.9 11/26/00 2419.2 37.9 03/13/06 250 4 07/07/97 1.0 2.0 03/19/99 88.4 3.0 11/27/00 816.4 35.9 03/20/06 1 1 07/08/97 1.0 2.0 03/20/99 75.4 3.0 11/28/00 2419.2 48.0 03/27/06 60 16 07/09/97 2.0 2.0 03/21/99 178.5 7.4 11/29/00 2419.2 111.9 04/03/06 2 1 07/10/97 1.0 2.0 03/22/99 24.6 3.1 11/30/00 1732.87 56.3 04/10/06 1 1 07/11/97 2.0 2.0 03/23/99 133.3 13.4 12/01/00 2419.2 75.4 04/17/06 2 2 07/12/97 2.0 4.0 03/24/99 125 16.0 12/02/00 2419.2 101.4 04/24/06 3 3 07/13/97 1.0 2.0 03/25/99 114.5 20.9 12/03/00 2419.2 47.2 05/01/06 5 3 07/14/97 11.0 2.0 03/26/99 150 26.5 12/04/00 2419.2 30.9 05/08/06 6 7 07/15/97 10.0 2.0 03/27/99 66.3 5.2 12/05/00 2419.2 48.0 05/15/06 1 5 07/16/97 6.0 2.0 03/28/99 56.5 8.6 12/06/00 2419.2 23.1 05/22/06 110 82 07/17/97 11.0 8.0 03/29/99 95.9 19.3 12/07/00 1986.28 29.2 05/30/06 20 10 07/18/97 8.0 8.0 03/30/99 81.6 25.6 12/08/00 2419.2 52.1 06/05/06 50 41 07/19/97 6.0 2.0 03/31/99 29.2 9.7 12/09/00 06/12/06 28 14 07/20/97 7.0 4.0 04/01/99 47.2 5.2 12/10/00 2419.2 93.3 06/19/06 50 22 07/21/97 5.0 4.0 04/02/99 104.6 7.4 12/11/00 178.9 35.9 06/26/06 30 18 07/22/97 11.0 17.0 04/03/99 58.1 6.3 12/12/00 1203.31 121.1 07/03/06 40 15 07/23/97 12.0 4.0 04/04/99 138 5.2 12/13/00 325.5 105.0 07/10/06 100 32 07/24/97 5.0 23.0 04/05/99 88.2 9.0 12/14/00 95.9 56.3 07/17/06 50 43 07/25/97 12.0 21.0 04/06/99 77.1 1.0 12/15/00 93.2 34.5 07/24/06 140 58 07/26/97 11.0 2.0 04/07/99 83.6 8.5 12/16/00 133.3 56.5 07/31/06 120 67 07/27/97 6.0 4.0 04/08/99 79.4 13.5 12/17/00 98.8 25.9 08/07/06 60 33 07/28/97 8.0 2.0 04/09/99 38.4 6.3 12/18/00 114.5 56.3 08/14/06 100 30 07/29/97 8.0 17.0 04/10/99 183.5 10.9 12/19/00 193.5 56.5 08/21/06 90 52 07/30/97 7.0 7.0 04/11/99 95.9 2.0 12/20/00 105 63.1 08/28/06 60 24 07/31/97 12.0 7.0 04/12/99 65.7 5.2 12/21/00 133.3 50.4 09/05/06 150 15 08/01/97 9.0 2.0 04/13/99 86.2 1.0 12/22/00 166.4 83.6 09/11/06 160 44 08/02/97 10.0 2.0 04/14/99 65.7 2.0 12/23/00 328.2 81.3 09/18/06 180 22 08/03/97 7.0 2.0 04/15/99 35.9 3.1 12/24/00 88.2 41.0 09/25/06 50 31 08/04/97 9.0 4.0 04/16/99 19.7 2.0 12/25/00 238.9 1.0 10/02/06 210 122 08/05/97 10.0 4.0 04/17/99 22.6 1.0 12/26/00 275.5 81.3 10/09/06 20 7 08/06/97 8.0 4.0 04/18/99 14.3 1.0 12/27/00 193.5 65.7 10/16/06 4 6 08/07/97 5.0 4.0 04/19/99 6.3 1.0 12/28/00 196.6 33.1 10/23/06 130 82 08/08/97 7.0 2.0 04/20/99 18.7 2.0 12/29/00 172 47.1 10/30/06 90 16 08/09/97 6.0 4.0 04/21/99 55.2 2.0 12/30/00 135.4 22.3 11/06/06 30 13 08/10/97 7.0 4.0 04/22/99 35.9 5.2 12/31/00 224.7 1.0 11/13/06 50 3 SW Raw SW Raw SW Raw SW Raw SW Raw SW Raw SW Raw SW Raw Total E. coli Total E. coli Total E. coli Total E. coli DATE Coliform Coliform DATE Coliform Coliform DATE Coliform Coliform DATE Coliform Coliform 08/11/97 5.0 2.0 04/23/99 33.1 3.1 01/01/01 98.8 26.5 11/20/06 170 18 08/12/97 4.0 2.0 04/24/99 61.3 10.8 01/02/01 69.7 16.0 11/27/06 40 7 08/13/97 3.0 2.0 04/25/99 73.8 6.3 01/03/01 65 8.4 12/04/06 30 12 08/14/97 4.0 4.0 04/26/99 88.2 6.3 01/04/01 58.3 8.2 12/11/06 60 15 08/15/97 2.0 4.0 04/27/99 90.6 5.0 01/05/01 88.2 36.9 12/18/06 20 4 08/16/97 2.0 4.0 04/28/99 137.6 3.0 01/06/01 118.7 27.2 12/26/06 70 8 08/17/97 2.0 2.0 04/29/99 23.1 1.0 01/07/01 35.4 8.4 08/18/97 8.0 22.0 04/30/99 261.3 12.1 01/08/01 141.4 66.3 min 1.0 2.0 08/19/97 4.0 17.0 05/01/99 410.6 5.2 01/09/01 75.9 29.5 max 15.0 1600.0 08/20/97 6.0 30.0 05/02/99 579.4 13.4 01/10/01 72.3 8.6 avg 6.0 24.9 08/21/97 1.0 2.0 05/03/99 307.6 10.9 01/11/01 55.6 98.8 median 6.0 8.0 08/22/97 5.0 23.0 05/04/99 248.9 5.2 01/12/01 218.7 53.0 08/23/97 7.0 17.0 05/05/99 224.4 13.5 01/13/01 214.3 83.0 08/24/97 7.0 23.0 05/06/99 45.7 9.8 01/14/01 547.5 125.9 08/25/97 5.0 14.0 05/07/99 29.2 6.0 01/15/01 727 155.3 08/26/97 9.0 12.0 05/08/99 107.6 7.4 01/16/01 275.5 76.6 08/27/97 5.0 2.0 05/09/99 204.6 36.8 01/17/01 127.4 48.0 08/28/97 6.0 2.0 05/10/99 137.6 43.1 01/18/01 148.3 48.0 08/29/97 6.0 8.0 05/11/99 178.5 13.5 01/19/01 410.6 80.1 08/30/97 4.0 2.0 05/12/99 115.3 12.7 01/20/01 285.1 103.9 08/31/97 7.0 4.0 05/13/99 73.3 11.0 01/21/01 224.7 107.6 09/01/97 3.0 2.0 05/14/99 613.1 137.6 01/22/01 387.3 119.8 09/02/97 6.0 2.0 05/15/99 42.2 13.1 01/23/01 325.5 85.5 09/03/97 8.0 2.0 05/16/99 60.9 10.8 01/24/01 67.5 36.1 09/04/97 15.0 60.0 05/17/99 60.1 6.0 01/25/01 54 32.2 09/05/97 5.0 2.0 05/18/99 145 31.8 01/26/01 107.1 61.6 09/06/97 6.0 4.0 05/19/99 93.3 8.5 01/27/01 125.9 55.6 09/07/97 6.0 2.0 05/20/99 65 7.4 01/28/01 156.5 83.9 09/08/97 6.0 2.0 05/21/99 93.3 16.1 01/29/01 178.9 57.1 09/09/97 4.0 2.0 05/22/99 131.3 16.0 01/30/01 177.9 65.7 Giardia_Crypto Data - Sanitary Survey

Crypto/li % Giardia % Crypto Total E. coli Giardia Crypto ter Ave Matrix Matrix Coliform (quanti- Sample Sample Giardia/li Giardia/li Crypto/li Crypto/li 2 yr Spike Spike (Quanti- tray Turbdity Date Sample Location Volume ter ter Ave ter ter Ave RAA Recovery Recovery Method tray MPN) MPN) (NTU) 07/01/97 Sweetwater Reservoir 00 08/01/97 Sweetwater Reservoir 00 09/01/97 Sweetwater Reservoir 00 10/01/97 Sweetwater Reservoir 00 12/01/97 Sweetwater Reservoir 00 01/01/98 Sweetwater Reservoir 00 02/01/98 Sweetwater Reservoir 00 03/01/98 Sweetwater Reservoir 00 04/01/98 Sweetwater Reservoir 00 05/01/98 Sweetwater Reservoir 00 06/01/98 Sweetwater Reservoir 00 07/01/98 Sweetwater Reservoir 00 09/09/98 Sweetwater Reservoir 00 10/01/98 Sweetwater Reservoir 00 11/01/98 Sweetwater Reservoir 00 12/01/98 Sweetwater Reservoir 00 10/01/02 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 36.4 30.3 EPA1623 10/15/02 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 EPA1623 11/04/02 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 EPA1623 11/18/02 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 EPA1623 12/03/02 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 EPA1623 12/18/02 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 EPA1623 01/08/03 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 EPA1623 01/21/03 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 EPA1623 02/10/03 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 EPA1623 02/24/03 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 EPA1623 03/10/03 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 EPA1623 03/24/03 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 EPA1623 04/07/03 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 EPA1623 04/22/03 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 EPA1623 05/12/03 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 EPA1623 05/27/03 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 EPA1623 06/10/03 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 EPA1623 06/30/03 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 EPA1623 07/14/03 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 EPA1623 07/28/03 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 68.0 66.7 EPA1623 08/13/03 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 EPA1623 08/26/03 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 EPA1623 09/08/03 Sweetwater Reservoir 10 liters 0.0 0.0 1.0 0.1 0.0043 EPA1623 09/22/03 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 0.0042 EPA1623 10/07/03 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 0.0040 EPA1623 10/20/03 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 0.0038 EPA1623 11/03/03 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 0.0037 EPA1623 11/17/03 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 0.0036 EPA1623 12/03/03 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 0.0034 EPA1623 12/16/03 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 0.0033 EPA1623 12/29/03 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 0.0032 EPA1623 01/12/04 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 0.0031 EPA1623 01/26/04 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 0.0030 EPA1623 02/09/04 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 0.0029 EPA1623 02/23/04 Sweetwater Reservoir 10 liters 0.0 0.0 0.0 0.0 0.0029 EPA1623 03/08/04 Sweetwater Reservoir 10 liters 1.0 0.1 0.0028 0.0 0.0 0.0028 EPA1623 03/22/04 Sweetwater Reservoir 10 liters 0.0 0.0 0.0027 0.0 0.0 0.0027 EPA1623 04/05/04 Sweetwater Reservoir 10 liters 0.0 0.0 0.0026 0.0 0.0 0.0026 EPA1623 04/19/04 Sweetwater Reservoir 10 liters 0.0 0.0 0.0026 0.0 0.0 0.0026 EPA1623 05/03/04 Sweetwater Reservoir 10 liters 0.0 0.0 0.0025 0.0 0.0 0.0025 78.8 50.0 EPA1623 05/17/04 Sweetwater Reservoir 10 liters 0.0 0.0 0.0024 0.0 0.0 0.0024 EPA1623 06/01/04 Sweetwater Reservoir 10 liters 0.0 0.0 0.0024 0.0 0.0 0.0024 EPA1623 06/14/04 Sweetwater Reservoir 10 liters 0.0 0.0 0.0023 0.0 0.0 0.0023 EPA1623 06/28/04 Sweetwater Reservoir 10 liters 0.0 0.0 0.0023 0.0 0.0 0.0023 EPA1623 07/12/04 Sweetwater Reservoir 10 liters 0.0 0.0 0.0022 2.0 0.2 0.0067 EPA1623 07/26/04 Sweetwater Reservoir 10 liters 0.0 0.0 0.0022 0.0 0.0 0.0065 EPA1623 08/09/04 Sweetwater Reservoir 10 liters 0.0 0.0 0.0021 0.0 0.0 0.0064 EPA1623 08/23/04 Sweetwater Reservoir 10 liters 0.0 0.0 0.0021 0.0 0.0 0.0063 EPA1623 09/07/04 Sweetwater Reservoir 10 liters 0.0 0.0 0.0020 0.0 0.0 0.0061 EPA1623 09/20/04 Sweetwater Reservoir 10 liters 0.0 0.0 0.0020 0.0 0.0 0.0060 EPA1623 10/06/04 Sweetwater Reservoir 10 liters 0.0 0.0 0.0020 0.0 0.0 0.0059 EPA1623 10/20/04 Sweetwater Reservoir 10 liters 0.0 0.0 0.0019 0.0 0.0 0.0058 EPA1623 11/22/04 Sweetwater Reservoir 10 liters 0.0 0.0 0.0019 0.0 0.0 0.0057 EPA1623 11/30/04 Sweetwater Reservoir 10 liters 0.0 0.0 0.0019 0.0 0.0 0.0056 EPA1623 12/14/04 Sweetwater Reservoir 10 liters 0.0 0.0 0.0018 0.0 0.0 0.0055 EPA1623 12/27/04 Sweetwater Reservoir 10 liters 0.0 0.0 0.0018 0.0 0.0 0.0054 EPA1623 01/10/05 Sweetwater Reservoir 10 liters 0.0 0.0 0.0018 0.0 0.0 0.0053 EPA1623 01/24/05 Sweetwater Reservoir 10 liters 0.0 0.0 0.0017 0.0 0.0 0.0052 EPA1623 02/01/05 Sweetwater Reservoir 10 liters 0.0 0.0 0.0017 0.0 0.0 0.0051 83.8 72.7 EPA1623 02/14/05 Sweetwater Reservoir 10 liters 0.0 0.0 0.0017 0.0 0.0 0.0050 EPA1623 02/28/05 Sweetwater Reservoir 10 liters 0.0 0.0 0.0016 0.0 0.0 0.0049 EPA1623 03/14/05 Sweetwater Reservoir 10 liters 0.0 0.0 0.0016 0.0 0.0 0.0048 EPA1623 03/28/05 Sweetwater Reservoir 10 liters 0.0 0.0 0.0016 0.0 0.0 0.0048 EPA1623 04/11/05 Sweetwater Reservoir 10 liters 0.0 0.0 0.0016 0.0 0.0 0.0047 EPA1623 04/25/05 Sweetwater Reservoir 10 liters 0.0 0.0 0.0015 0.0 0.0 0.0046 EPA1623 05/09/05 Sweetwater Reservoir 10 liters 0.0 0.0 0.0015 0.0 0.0 0.0045 EPA1623 05/23/05 Sweetwater Reservoir 10 liters 0.0 0.0 0.0015 0.0 0.0 0.0045 EPA1623 06/06/05 Sweetwater Reservoir 10 liters 0.0 0.0 0.0015 0.0 0.0 0.0044 EPA1623 06/20/05 Sweetwater Reservoir 10 liters 0.0 0.0 0.0014 0.0 0.0 0.0043 0.0063 EPA1623 07/05/05 Sweetwater Reservoir 10 liters 0.0 0.0 0.0014 1.0 0.1 0.0057 0.0083 EPA1623 Giardia_Crypto Data - Sanitary Survey

LT2 Official Monitoring Begins (October 2006)

10/09/06 Sweetwater Reservoir 10 liters 0.0 0.0 0.0000 0.0 0.0 0.0000 0.0000 EPA1623 2419.6 6.3 3.68 10/23/06 Sweetwater Reservoir 10 liters 0.0 0.0 0.0000 0.0 0.0 0.0000 0.0000 EPA1623 2419.6 47.4 3.65 11/13/06 Raw Aqueduct 10 liters 0.0 0.0 0.0000 0.0 0.0 0.0000 0.0000 EPA1623 435.2 6.3 0.60 11/27/06 Raw Aqueduct 10 liters 0.0 0.0 0.0000 0.0 0.0 0.0000 0.0000 EPA1623 325.5 2.0 0.60 12/11/06 Raw Aqueduct 10 liters 0.0 0.0 0.0000 0.0 0.0 0.0000 0.0000 EPA1623 248.1 1 1.08 12/26/06 Raw Aqueduct 10 liters 0.0 0.0 0.0000 0.0 0.0 0.0000 0.0000 EPA1623 54.8 2 0.709 01/08/07 Raw Aqueduct 10 liters 0.0 0.0 0.0000 0.0 0.0 0.0000 0.0000 EPA1623 24.6 <1 1.8 01/22/07 Raw Aqueduct 10 liters 0.0 0.0 0.0000 0.0 0.0 0.0000 0.0000 EPA1623 19.7 <1 1.6 Sample Location Date Sampled Cond pH TDS (mg/l)Total Alk Hydrox Alk Carb Alk Bicarb Alk Total Hard Ca Hard Mg Hard Ca+2 Mg+2 Na+ (mg/l) K+ (mg/l) F- (mg/l) Cl- (mg/l) Br- (mg/l) SO4-2 (mg/l) NO3--N (mg/l) NO2--N (mg/l) PO4-3-P (mg/l) NH3-N (mg/L) Sweetwater Lake Surface 4/23/1996 747 8.44 465 159 234 132 102 53 25 52 4 0.27 108 0.25 65 0.05 ND 0.003 Sweetwater Lake Surface 1/2/1997 896 8 561 185 ND 257 121 136 48 33 68 4 0.33 146 Sweetwater Lake Surface 2/24/1997 68 4 0.33 75 0.00 ND Sweetwater Lake Surface 7/3/1997 937 8.1 556 166 268 129 139 52 34 0.30 129 113 Sweetwater Lake Surface 9/10/1997 0.42 0.12 ND Sweetwater Lake Surface 12/2/1997 1007 8.13 632 151 270 168 102 67 25 125 5 0.32 162 135 Sweetwater Lake Surface 2/12/1998 0.48 0.73 ND Sweetwater Lake Surface 6/17/1998 676 7.41 438 130 201 110 91 44 22 69 3 0.22 100 0.28 71 0.14 0.07 Sweetwater Lake Surface 8/4/1998 78 Sweetwater Lake Surface 1/7/1999 737 7.83 528 159 256 136 120 54 29 62 3 0.25 127 0.36 82 0.12 ND ND Sweetwater Lake Surface 6/23/1999 744 7.66 461 163 240 124 116 50 28 0.26 112 0.33 74 0.07 ND ND Sweetwater Lake Surface 7/15/1999 79 3 ND ND Sweetwater Lake Surface 1/26/2000 861 7.79 552 170 265 153 112 61 27 0.29 127 0.43 91 0.12 ND ND Sweetwater Lake Surface 2/24/2000 71 3 ND ND Sweetwater Lake Surface 7/26/2000 898 8.44 539 158 252 125 127 50 31 0.28 140 0.41 92 0.00 ND ND Sweetwater Lake Surface 11/29/2000 922 7.98 596 174 280 136 144 55 35 0.30 149 0.46 99 0.02 ND ND Sweetwater Lake Surface 6/19/2001 1079 8.42 301 157 319 174 145 70 35 0.30 123 0.32 164 0.01 ND ND Sweetwater Lake Surface 6/28/2001 100 4 Sweetwater Lake Surface 12/20/2001 1120 8.26 636 160 293 159 134 64 33 0.33 156 0.40 169 0.12 ND Sweetwater Lake Surface 1/21/2002 Sweetwater Lake Surface 4/9/2002 Sweetwater Lake Surface 5/9/2002 113 5 Sweetwater Lake Surface 6/26/2002 1053 8.14 647 150 ND 228 160 68 64 17 0.32 107 0.29 185 0.00 ND ND Sweetwater Lake Surface 7/11/2002 Sweetwater Lake Surface 10/16/2002 Sweetwater Lake Surface 1/8/2003 1067 7.81 677 141 ND ND 141 295 163 132 65 32 0.36 134 0.26 200 0.12 ND ND Sweetwater Lake Surface 5/19/2003 74 30 97 5 Sweetwater Lake Surface 5/20/2003 0.26 Sweetwater Lake Surface 6/24/2003 992 7.72 652 145 ND ND 145 286 167 119 67 29 0.31 124 0.27 193 0.00 ND ND Sweetwater Lake Surface 1/6/2004 858 7.49 642 137 ND ND 137 312 169 143 68 35 110 5 0.30 121 0.23 204 0.00 ND ND Sweetwater Lake Surface 6/23/2004 1019 7.99 610 143 ND ND 143 292 170 122 68 30 101 4 0.32 123 0.23 197 0.00 ND ND 0.02 Sweetwater Lake Surface 1/24/2005 970 7.57 612 132 ND ND 132 265 156 109 62 26 88 4 0.24 130 0.28 172 0.00 ND ND 0.03 Sweetwater Lake Surface 6/16/2005 1020 7.74 708 164 ND ND 164 309 71 32 110 6 0.36 145 190 1.00 Sweetwater Lake Surface 10/13/2005 110 6 Sweetwater Lake Surface 1/25/2006 892 7.65 516 168 ND ND 168 260 144 116 58 28 88 4 0.24 131 0.32 107 0.00 ND ND 0.06 Sweetwater Lake Surface 6/13/2006 929 8.28 580 181 ND 33.6 147 274 151 123 60 30 97 5 0.26 135 0.35 110 0.00 ND ND 0.02 676 301 110 68 44 16.51254 52 2.8 0.218 100 0.23 64.6 0.00 0.00 0.000 1120 708 174 145 73.8 35.21056 124.6 5.8 0.361 162 0.477 204 1.00 0.07 0.00 925 567 147 120 60 29 89 4 0 130 0.33 133 0.12 0.00 0.00

Clearwell Effluent 4/23/1996 749 8.04 477 158 ND 224 132 92 53 22 53 4 0.27 115 0.11 67 0.00 ND 0.003 Clearwell Effluent 1/2/1997 1030 8.1 681 141 ND 293 185 108 74 26 86 5 0.33 97 Clearwell Effluent 2/24/1997 86 5 0.03 266 0.40 ND Clearwell Effluent 7/3/1997 920 8.1 559 148 268 148 120 59 29 0.30 138 116 Clearwell Effluent 9/10/1997 0.36 0.18 ND Clearwell Effluent 12/2/1997 947 8.07 616 123 284 181 103 72 25 109 5 0.33 86 250 Clearwell Effluent 2/12/1998 0.03 0.19 ND Clearwell Effluent 6/17/1998 697 7.72 449 127 201 110 91 44 22 66 3 0.23 118 0.12 71 0.14 ND Clearwell Effluent 1/7/1999 745 7.92 561 161 255 140 115 56 28 0.26 137 0.20 84 0.00 ND ND Clearwell Effluent 6/23/1999 785 7.85 511 152 249 134 115 54 28 0.28 137 0.17 80 0.05 ND ND Clearwell Effluent 7/15/1999 84 3 Clearwell Effluent 1/26/2000 747 7.55 499 109 238 146 92 59 22 0.26 80 0.05 170 0.31 ND ND Clearwell Effluent 2/24/2000 73 4 Clearwell Effluent 7/26/2000 927 7.73 543 145 254 124 130 50 32 0.28 150 0.21 93 0.02 ND ND Clearwell Effluent 11/29/2000 951 7.61 596 155 272 140 132 56 32 0.30 166 0.24 100 0.04 ND ND Clearwell Effluent 6/19/2001 1158 8.02 592 149 303 170 133 68 32 0.29 142 0.17 166 0.02 ND ND Clearwell Effluent 6/28/2001 110 5 Clearwell Effluent 12/20/2001 1000 7.8 568 116 239 141 98 56 24 0.28 86 0.08 181 0.16 ND ND Clearwell Effluent 5/9/2002 70 4 Clearwell Effluent 6/26/2002 1011 7.79 649 123 ND 272 148 124 59 30 0.30 127 0.15 196 ND ND ND Clearwell Effluent 1/8/2003 1099 7.69 667 131 ND ND 131 295 163 132 65 32 0.36 146 0.10 203 ND ND ND Clearwell Effluent 5/19/2003 73 31 99 6 ND Clearwell Effluent 6/24/2003 1040 7.7 681 141 ND ND 141 284 163 121 65 29 0.28 129 0.12 195 ND ND ND Clearwell Effluent 1/6/2004 808 7.65 596 120 ND ND 120 295 173 122 69 30 98 5 0.31 89 0.00 228 0.20 ND ND Clearwell Effluent 6/23/2004 1057 7.76 627 135 ND ND 135 285 166 119 66 29 104 5 0.27 130 0.14 202 ND ND ND 0.33 Clearwell Effluent 1/24/2005 864 7.73 480 109 ND ND 109 240 140 100 56 24 0.23 98 0.15 156 0.44 ND ND 0.13 Clearwell Effluent 4/26/2005 52 27 97 5 Clearwell Effluent 6/16/2005 1100 7.65 762 160 ND ND 160 313 69 34 120 6 0.35 153 175 1.20 Clearwell Effluent 10/13/2005 110 6 Clearwell Effluent 1/25/2006 859 7.81 516 110 ND ND 110 240 142 98 57 24 97 5 0.24 118 0.15 173 0.33 ND ND 0.04 Clearwell Effluent 6/13/2006 710 7.48 432 88 ND ND 88 204 120 84 48 20 73 4 0.24 82 0.06 148 0.31 ND ND 0.05 697 432 44 20.39784 53 3.01 0.23 80 0.00 66.6 0.00 1158 762 74 34 120 5.7 0.355 166 0.356 266 1.20 914 574 60 27 90 5 0 120 0.13 158 0.18 Lake Loveland 4/23/1996 421 8.8 269 119 136 76 60 30 15 29 2 0.22 39 0.14 31 0.00 ND 0.00 Lake Loveland 12/6/1996 414 7.8 260 137 ND 153 82 71 33 17 28 3 0.25 47 Lake Loveland 2/24/1997 28 3 0.17 31 0.00 ND Lake Loveland 7/3/1997 462 8.8 288 130 158 88 70 35 17 0.24 55 37 Lake Loveland 9/9/1997 0.21 0.14 ND Lake Loveland 12/2/1997 479 7.82 295 136 153 96 57 38 14 37 3 0.25 54 35 Lake Loveland 2/11/1998 0.21 0.22 ND Lake Loveland 6/17/1998 317 8.67 237 95 107 61 46 24 11 37 2 0.21 39 0.15 27 0.05 ND Lake Loveland 1/7/1999 344 7.58 251 106 124 70 54 28 13 0.19 42 0.14 29 0.16 0.06 0.04 Lake Loveland 6/23/1999 441 8.87 270 126 149 83 66 33 16 0.23 51 0.18 37 0.05 ND ND Lake Loveland 7/15/1999 39 2 Lake Loveland 1/26/2000 413 7.92 288 134 150 85 65 34 16 0.22 53 0.19 35 0.18 ND 0.05 Lake Loveland 2/24/2000 34 2 Lake Loveland 7/26/2000 507 8.75 319 110 161 84 77 34 19 0.23 59 0.21 39 0.00 ND ND Lake Loveland 11/29/2000 490 7.79 315 139 160 85 75 34 18 0.23 53 0.23 36 0.02 ND 0.04 Lake Loveland 6/19/2001 543 9.47 310 104 54 25 29 10 7 0.22 65 0.25 45 0.03 ND ND Lake Loveland 6/28/2001 50 4 Lake Loveland 12/20/2001 625 7.5 322 144 179 80 99 32 24 0.23 68 0.26 41 0.00 ND 0.08 Lake Loveland 5/9/2002 57 4 Lake Loveland 6/26/2002 532 8.95 308 112 ND 149 47 102 19 25 0.24 59 0.25 39 0.00 ND ND Lake Loveland 1/8/2003 624 7.54 354 160 ND ND 160 179 88 91 35 22 0.30 74 0.26 37 0.61 ND 0.02 Lake Loveland 5/19/2003 40 24 57 5 Lake Loveland 5/20/2003 0.29 Lake Loveland 6/24/2003 648 8.51 382 165 ND ND 165 195 100 95 40 23 0.27 77 0.31 49 0.00 ND ND Lake Loveland 1/6/2004 609 7.74 375 160 ND ND 160 211 93 118 37 29 69 5 0.27 88 0.32 47 0.21 ND ND Lake Loveland 6/23/2004 711 8.19 391 162 ND ND 162 202 92 110 37 27 64 5 0.27 93 0.34 55 0.00 ND ND 0.03 Lake Loveland 1/24/2005 649 7.34 304 140 ND ND 140 180 80 100 32 24 37 4 0.18 86 0.21 42 1.08 ND 0.04 0.01 Lake Loveland 6/16/2005 500 8.8 344 158 ND 56.00 102 153 35 16 40 4 0.29 64 53 1.10 Lake Loveland 10/13/2005 42 4 Lake Loveland 1/25/2006 508 7.35 256 133 ND ND 133 160 92 68 37 17 43 4 0.18 62 0.19 42 0.22 ND ND 0.02 Lake Loveland 6/13/2006 562 8.57 346 155 ND 38.40 117 200 112 88 45 21 49 4 0.22 85 0.20 52 0.00 ND ND 0.02 317 237 10.01099 7.042112 28 1.97 0.179 39 0.14 27.2 0.00 711 391 44.84924 28.65411 68.5 4.88 0.302 93 0.34 55.4 1.10 514 309 33 19 43 4 0 63 0.22 40 0.19

Sweetwater River Influent 4/23/1996 1880 8.37 1266 277 9.20 568 296 272 118 66 76 3 0.38 318 0.11 292 0.00 ND 0.00 Sweetwater River Influent 11/20/1996 2814 8 1867 357 ND 889 402 487 161 118 137 4 0.46 511 Sweetwater River Influent 2/24/1997 137 4 0.64 264 0.00 ND Sweetwater River Influent 12/12/1997 2158 8.06 1351 251 626 295 331 118 80 266 7 0.36 397 314 Sweetwater River Influent 2/11/1998 0.25 1.89 ND Sweetwater River Influent 6/17/1998 770 8.3 470 163 228 124 104 50 25 65 2 0.27 108 0.28 71 0.09 ND Sweetwater River Influent 1/6/1999 1416 8.29 1075 277 531 267 264 107 64 0.35 262 0.60 206 0.04 ND ND Sweetwater River Influent 6/23/1999 2041 8.2 1272 256 622 259 363 104 88 0.37 386 0.97 305 0.04 ND ND Sweetwater River Influent 1/26/2000 2325 7.9 1658 385 789 507 282 203 69 0.45 427 1.02 356 0.09 ND ND Sweetwater River Influent 1/8/2003 2047 8.2 1409 318 ND ND 318 653 529 124 212 30 0.42 344 0.63 322 0.00 ND ND Sweetwater River Influent 6/24/2003 2477 8.04 1650 360 ND ND 360 736 359 377 144 92 0.46 452 0.97 371 0.00 ND ND Sweetwater River Influent 1/6/2004 2802 8.14 1792 383 ND ND 383 908 367 541 147 131 0.39 520 1.06 405 0.00 ND ND Sweetwater River Influent 6/23/2004 2783 8.42 1690 279 ND ND 279 707 237 470 95 114 0.32 528 1.13 422 0.00 ND ND 0.02 Sweetwater River Influent 1/24/2005 2312 7.58 1456 323 ND ND 323 686 152 534 61 130 0.38 399 0.80 349 0.89 ND ND 0.03 Sweetwater River Influent 1/25/2006 551 7.57 332 143 ND ND 143 188 100 88 40 21 0.21 77 0.21 48 0.18 ND ND 0.04 Sweetwater River Influent 6/13/2006 1234 8.73 762 191 ND 60.80 130 340 160 180 64 44 140 5 0.30 201 0.36 183 0.00 ND ND 0.01 551 332 40.04396 21.36917 64.5 2.17 0.209 77 0.11 48.1 0.00 2814 1867 211.8326 131.3718 265.9 7.06 0.462 528 1.13 422 1.89 1972 1289 116 77 137 4 0 352 0.64 279 0.23

Aqueduct Raw 1/7/1999 691 8.61 482 118 218 143 75 57 18 0.24 82 0.16 142 0.21 ND ND Aqueduct Raw 6/23/1999 699 8.24 483 112 236 143 93 57 23 0.27 66 0.09 173 0.25 ND ND Aqueduct Raw 1/26/2000 733 7.79 497 116 228 139 89 56 22 0.26 72 0.05 166 0.31 ND ND Aqueduct Raw 7/26/2000 773 8.32 494 118 244 152 92 61 22 0.26 64 0.09 178 0.34 ND 0.01 Aqueduct Raw 11/29/2000 704 8.1 478 111 223 132 91 53 22 0.25 66 0.10 167 0.26 ND 0.01 Aqueduct Raw 6/19/2001 872 8.06 486 116 245 145 100 58 24 0.26 70 0.11 173 0.36 ND 0.02 Aqueduct Raw 12/20/2001 862 7.94 510 120 243 143 100 57 24 0.28 80 0.09 190 0.27 ND ND Aqueduct Raw 6/26/2002 826 8.11 512 124 ND 240 136 104 54 25 0.27 73 0.00 172 0.32 ND ND Aqueduct Raw 8/5/2002 77 4 Aqueduct Raw 1/8/2003 858 8.01 549 125 ND ND 125 251 159 92 64 22 0.35 83 Aqueduct Raw 3/3/2003 79 4 Aqueduct Raw 6/24/2003 708 7.7 455 105 ND ND 105 209 125 84 50 20 0.23 72 0.15 148 0.47 ND ND Aqueduct Raw 1/6/2004 798 8.08 592 128 ND ND 128 291 173 118 69 29 0.31 84 0.09 225 0.00 ND ND Aqueduct Raw 6/23/2004 815 7.73 484 115 ND ND 115 229 141 88 56 21 0.23 75 0.14 171 0.46 ND ND 0.02 Aqueduct Raw 1/24/2005 800 7.79 468 113 ND ND 113 240 136 104 54 25 0.23 90 0.16 150 0.45 ND ND 0.02 Aqueduct Raw 1/25/2006 812 7.99 508 117 ND ND 117 231 136 95 54 23 0.25 96 0.17 172 0.32 ND ND 0.02 Aqueduct Raw 6/13/2006 712 8.1 438 108 ND ND 108 205 130 75 52 18 72 4 0.24 76 0.10 154 0.27 ND ND 0.02 691 438 50.05495 18.2 72 4 0.226 64 0.00 142 0.00 872 592 69.27605 28.65411 79 4.4 0.346 96 0.168 225 0.471 778 496 57 23 76 4.2 0.26 77 0.11 170 0.31 Date Sampled mg/l Al mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l Sample Location Comments Sb As Ba mg/l Be mg/l B Cd Co Total Cr Cr+6 mg/l Cu mg/l Fe Pb mg/l Mn mg/l Hg mg/l Mo mg/l Ni mg/l Se mg/l Ag mg/l Sr mg/l Tl mg/l V Zn Clearwell Effluent 04/23/96 0.060 ND 0.0700 ND ND 0.0090 ND ND ND ND 0.001 0.0090 Clearwell Effluent 12/09/96 0.280 0.1200 ND 0.0120 ND ND ND 0.004 0.0080 Clearwell Effluent 12/15/97 0.180 0.1400 ND ND ND 0.004 ND Clearwell Effluent 02/25/98 ND 0.0039 ND ND 0.0092 ND ND ND 0.0110 ND Clearwell Effluent 05/11/98 0.0033 ND 0.0012 Clearwell Effluent 06/17/98 0.100 0.0700 ND ND 0.0040 ND ND Clearwell Effluent 04/15/99 ND ND ND 0.0510 ND ND ND 0.0032 ND ND 0.0063 ND 0.0079 ND ND ND ND Clearwell Effluent 07/15/99 ND ND ND 0.0520 ND ND 0.0034 0.0025 ND ND 0.0047 0.0003 ND ND ND ND ND Clearwell Effluent 02/24/00 ND ND ND 0.0075 ND ND 0.0065 0.0036 ND 0.0005 0.0045 ND ND ND ND ND ND Clearwell Effluent 10/18/00 0.00006 Clearwell Effluent 11/15/00 ND Clearwell Effluent 06/28/01 ND ND 0.0019 0.0560 ND ND ND 0.0054 ND 0.0007 0.0130 ND ND ND ND ND ND Clearwell Effluent 12/13/01 ND 0.1050 Clearwell Effluent 05/09/02 ND ND ND 0.0800 ND ND ND 0.0043 0.038 ND 0.0012 ND 0.0036 0.0025 ND ND ND Clearwell Effluent Sweetwater Reservoir 05/19/03 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND Clearwell Effluent Aqueduct 01/06/04 ND ND ND 0.1190 ND ND ND 0.0030 0.014 ND ND ND ND 0.0060 ND 0.94 ND ND Clearwell Effluent Sweetwater Reservoir 06/23/04 0.012 ND 0.0020 0.0560 ND ND ND 0.0050 0.194 ND 0.0040 ND 0.0050 0.0050 ND 0.596 ND 0.0150 Clearwell Effluent Sweetwater Reservoir 04/26/05 ND ND ND ND ND ND ND ND 0.528 ND Clearwell Effluent Sweetwater Reservoir 06/16/05 ND ND ND 0.0500 ND ND ND ND ND ND ND ND ND ND ND ND ND 0.52 ND ND ND Clearwell Effluent Sweetwater Reservoir 10/13/05 ND ND ND ND ND ND ND ND ND ND 0.0190 ND ND ND ND ND 0.45 ND ND ND Clearwell Effluent Aqueduct 01/26/06 ND ND ND 0.1060 ND 0.14 ND ND ND ND ND ND ND ND ND ND ND ND 0.812 ND 0.0210 ND Clearwell Effluent Aqueduct 06/13/06 ND ND ND ND ND 0.14 ND ND ND ND ND ND 0.0042 ND ND ND ND ND 0.76 ND ND ND ND ND ND ND ND 0.140 ND ND ND 0.000 ND ND ND ND ND ND ND ND ND 0.450 ND ND ND 0.280 ND 0.004 0.140 ND 0.140 ND ND 0.009 0.000 0.012 0.194 0.001 0.105 0.000 ND 0.008 0.011 0.004 0.940 ND 0.021 0.015 0.040 ND 0.001 0.058 ND 0.140 ND ND 0.001 0.000 0.003 0.015 0.000 0.010 0.000 ND 0.001 0.002 0.001 0.658 ND 0.004 0.002 0.077 0.036 Lake Loveland 04/23/96 0.010 ND 0.0700 ND ND 0.0080 ND ND ND ND 0.002 0.0080 Lake Loveland 12/09/96 0.090 0.0300 ND 0.0080 ND ND 0.0820 0.005 0.0130 Lake Loveland 12/15/97 0.180 0.1100 ND 0.030 0.2600 0.005 ND Lake Loveland 06/17/98 0.210 0.0700 ND 0.130 0.0240 ND ND Lake Loveland 07/15/99 0.026 ND ND 0.0330 ND ND ND ND ND ND 0.0079 0.0002 ND ND ND ND ND Lake Loveland 02/24/00 0.350 ND 0.0012 0.0480 ND ND ND 0.0027 0.480 0.0009 0.2350 0.0003 ND ND ND ND 0.0063 Lake Loveland 06/28/01 0.200 ND 0.0023 0.0350 ND ND 0.0011 0.0041 0.200 ND 0.0230 ND ND ND ND ND 0.0091 Lake Loveland 05/09/02 0.042 0.0011 0.0017 0.0480 ND ND ND 0.0028 0.135 ND 0.0010 ND 0.0031 0.0021 0.002 ND 0.0180 Lake Loveland 05/19/03 ND ND ND ND ND ND ND ND 0.150 ND 0.0272 ND ND ND ND ND 0.0043 0.0560 Lake Loveland 01/06/04 0.017 ND ND 0.0520 ND ND ND ND 0.046 ND 0.0410 ND ND ND ND 0.231 ND ND Lake Loveland 06/23/04 0.028 ND ND 0.0510 ND ND 0.0030 0.0050 0.052 ND 0.0160 ND ND ND ND 0.197 ND 0.0080 Lake Loveland 01/24/05 1.340 ND ND ND ND ND ND ND 1.010 ND ND ND ND ND ND 0.141 ND 0.0880 Lake Loveland 06/16/05 ND ND ND 0.0420 ND ND ND ND ND ND ND ND ND ND ND ND ND 0.18 ND ND ND Lake Loveland 10/13/05 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.17 ND ND ND Lake Loveland 01/26/06 ND ND ND ND ND ND ND ND ND ND 0.159 ND 0.1060 ND 0.007 ND ND ND 0.188 ND 0.0200 ND Lake Loveland 06/13/06 0.068 ND ND ND ND ND ND ND ND ND 0.081 ND 0.0120 ND ND ND ND ND 0.24 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.141 ND ND ND 1.340 0.001 0.002 0.110 ND ND ND ND 0.003 0.008 1.010 0.001 0.260 0.000 0.007 0.003 0.002 0.005 0.240 ND 0.020 0.088 0.160 0.000 0.000 0.037 ND ND ND ND 0.000 0.002 0.165 0.000 0.052 0.000 0.002 0.000 0.000 0.001 0.192 ND 0.005 0.013 0.639 0.241 Sweetwater Lake Surface 04/23/96 0.200 ND 0.0500 ND ND 0.0840 0.131 ND 0.0630 ND 0.001 0.0140 Sweetwater Lake Surface 07/22/96 ND ND ND ND ND Sweetwater Lake Surface 12/09/96 0.420 0.0700 ND 0.0630 0.393 ND 0.1600 0.005 0.0120 Sweetwater Lake Surface 05/27/97 ND 0.0028 ND ND ND ND ND ND Sweetwater Lake Surface 12/15/97 0.480 0.1400 ND 0.830 0.1350 0.006 ND Sweetwater Lake Surface 02/25/98 ND 0.0020 ND ND ND 0.0010 ND ND ND ND Sweetwater Lake Surface 05/11/98 0.0015 0.0012 Sweetwater Lake Surface 06/17/98 0.100 0.0700 0.0120 0.020 0.0350 ND ND Sweetwater Lake Surface 08/04/98 ND 0.0020 ND ND ND ND ND ND ND ND Sweetwater Lake Surface 02/09/99 ND ND ND ND 0.0042 0.0010 ND ND ND ND Sweetwater Lake Surface 04/15/99 ND Sweetwater Lake Surface 07/15/99 ND ND ND 0.0560 ND ND 0.0078 0.0030 ND ND 0.0089 ND ND ND ND ND ND Sweetwater Lake Surface 02/24/00 0.160 ND 0.0018 0.0590 ND ND ND 0.0033 0.232 0.0006 0.0450 ND ND ND ND ND 0.0098 Sweetwater Lake Surface 06/28/01 0.120 ND 0.0023 0.0630 ND ND 0.0021 0.0050 0.230 ND 0.0190 ND ND ND ND ND 0.0081 Sweetwater Lake Surface 12/13/01 0.440 0.4900 Sweetwater Lake Surface 01/21/02 ND 0.0071 Sweetwater Lake Surface 04/09/02 ND 0.0111 Sweetwater Lake Surface 05/09/02 0.170 0.0016 0.0022 0.0081 ND ND ND 0.0051 0.456 ND 0.0390 ND 0.0067 0.0030 0.002 ND 0.0430 Sweetwater Lake Surface 07/11/02 ND 0.0129 Sweetwater Lake Surface 10/16/02 ND 0.0176 Sweetwater Lake Surface 05/19/03 0.104 ND ND ND ND ND ND ND 0.360 ND 0.0404 ND ND ND ND ND 0.0062 0.0685 Sweetwater Lake Surface 01/06/04 0.055 ND ND 0.0740 ND ND ND ND 0.230 ND 0.1530 ND ND ND 0.004 0.769 ND ND Sweetwater Lake Surface 06/23/04 0.062 ND ND 0.0600 ND ND 0.0030 0.0060 0.127 ND 0.0140 ND ND ND ND 0.639 ND 0.0100 Sweetwater Lake Surface 01/24/05 0.137 ND ND ND ND ND ND ND 0.168 ND 0.1660 ND ND ND ND 0.607 ND 0.1430 Sweetwater Lake Surface 06/16/05 ND ND ND 0.0540 ND ND ND ND 0.0190 ND ND ND ND ND ND ND ND 0.56 ND ND ND Sweetwater Lake Surface 10/13/05 ND ND ND ND ND ND ND ND ND ND 0.1600 ND ND ND ND ND 0.52 ND ND ND Sweetwater Lake Surface 01/26/06 ND ND 0.0017 0.0690 0.0010 0.14 ND ND ND ND 0.195 ND 0.0790 ND 0.018 ND ND ND 0.461 ND 0.0250 ND Sweetwater Lake Surface 06/13/06 0.061 ND ND ND ND 0.11 ND ND ND 0.0240 0.110 ND 0.0310 ND ND ND ND ND 0.5 ND ND ND ND ND ND ND ND 0.110 ND ND ND ND ND ND ND ND ND ND ND ND ND 0.461 ND ND ND 0.480 0.002 0.003 0.140 0.001 0.135 ND ND 0.008 ND 0.084 0.830 0.001 0.490 ND 0.018 0.007 0.003 0.006 0.769 ND 0.025 0.143 0.129 0.000 0.001 0.048 0.000 0.123 ND ND 0.001 ND 0.014 0.245 0.000 0.096 ND 0.005 0.000 0.000 0.001 0.579 ND 0.009 0.019 0.550 0.231 Sweetwater River Influent 04/23/96 0.100 0.0080 0.1100 ND ND 0.0050 ND ND 0.0890 ND 0.006 0.0080 Sweetwater River Influent 12/09/96 0.210 0.0900 ND 0.0130 0.177 ND 0.1440 0.014 0.0130 Sweetwater River Influent 12/15/97 0.390 0.1400 ND 0.870 0.6300 0.011 ND Sweetwater River Influent 06/17/98 0.210 ND 0.0010 0.150 0.0230 ND ND Sweetwater River Influent 06/13/06 0.270 ND ND ND ND 0.19 ND ND ND ND 0.410 ND 0.2000 ND 0.004 ND ND ND 0.54 ND 0.0042 ND 0.100 ND ND ND ND 0.190 ND ND ND ND ND ND 0.023 ND 0.004 ND ND ND 0.540 ND 0.004 ND 0.390 ND 0.008 0.140 ND 0.190 ND ND ND 0.013 0.870 ND 0.630 ND 0.004 ND ND 0.014 0.540 ND 0.004 0.013 0.236 ND 0.004 0.068 ND 0.190 ND ND ND 0.004 0.321 ND 0.217 ND 0.004 ND ND 0.006 0.540 ND 0.004 0.004 DATE SAMPLE ID SAMPLE POINT pH COND ALK Cl- TH CaH Fe Mn 1/2/1996 06-PCA-0196 Clearwell Effluent 7.9 756 155 112 223 122 ND ND 2/5/1996 06-PCA-0296 Clearwell Effluent 8.1 686 141 96 207 114 ND ND 3/4/1996 06-PCA-0396 Clearwell Effluent 7.9 718 143 102 207 118 ND ND 4/11/1996 06-PCA-0496 Clearwell Effluent 8.2 758 149 107 220 128 ND ND 5/6/1996 06-PCA-0596 Clearwell Effluent 8.1 812 154 112 222 124 ND ND 6/3/1996 06-PCA-0696 Clearwell Effluent 8.0 807 156 115 232 132 ND ND 7/1/1996 06-PCA-0796 Clearwell Effluent 7.9 816 178 120 228 124 ND ND 8/11/1996 06-PCA-0896 Clearwell Effluent 7.8 825 180 65 220 136 ND ND 9/3/1996 06-PCA-0996 Clearwell Effluent 7.9 891 180 138 241 169 ND ND 10/12/1996 06-PCA-1096 Clearwell Effluent 8.1 945 130 91 273 161 ND ND 11/12/1996 06-PCA-1196 Clearwell Effluent 8.1 1024 137 92 299 173 ND ND 12/9/1996 06-PCA-1296 Clearwell Effluent 8.1 1030 141 97 293 185 ND ND 1/6/1997 06-PCA-0197 Clearwell Effluent 8.1 1024 125 97 307 193 ND ND 2/3/1997 06-PCA-0297 Clearwell Effluent 7.6 747 139 114 221 125 ND ND 3/3/1997 06-PCA-0397 Clearwell Effluent 7.8 1000 130 89 312 196 ND ND 4/7/1997 06-PCA-0497 Clearwell Effluent 8.0 953 126 92 284 176 ND ND 5/5/1997 06-PCA-0597 Clearwell Effluent 7.7 928 138 124 268 160 ND ND 6/2/1997 06-PCA-0697 Clearwell Effluent 7.7 925 144 119 256 152 ND ND 7/7/1997 06-PCA-0797 Clearwell Effluent 8.1 920 148 138 268 148 ND ND 8/4/1997 06-PCA-0897 Clearwell Effluent 8.0 922 164 134 270 153 ND ND 9/2/1997 06-PCA-0997 Clearwell Effluent 8.0 975 148 144 262 142 ND ND 10/6/1997 06-PCA-1097 Clearwell Effluent 7.7 974 145 153 260 146 0.02 0.02 11/3/1997 06-PCA-1197 Clearwell Effluent 7.8 1006 136 141 275 153 ND 0.01 12/2/1997 06-PCA-1297 Clearwell Effluent 8.1 947 123 86 284 181 0.02 0.01 1/5/1998 06-PCA-0198 Clearwell Effluent 8.1 1104 147 179 293 155 0.01 ND 2/2/1998 06-PCA-0298 Clearwell Effluent 8.1 967 127 87 301 191 0.03 0.01 3/2/1998 06-PCA-0398 Clearwell Effluent 7.9 931 119 81 282 175 0.02 0.03 4/7/1998 06-PCA-0498 Clearwell Effluent 8.0 858 114 142 240 124 5/4/1998 06-PCA-0598 Clearwell Effluent 7.8 736 118 120 209 112 0.02 0.03 6/1/1998 06-PCA-0698 Clearwell Effluent 7.7 697 127 118 201 110 0.10 0.06 7/6/1998 06-PCA-0798 Clearwell Effluent 7.8 752 133 115 203 114 0.02 0.02 8/3/1998 06-PCA-0898 Clearwell Effluent 7.7 773 138 123 223 114 0.01 0.02 9/8/1998 06-PCA-0998 Clearwell Effluent 8.0 843 144 125 223 122 0.01 0.02 10/5/1998 06-PCA-1098 Clearwell Effluent 7.9 765 148 126 227 124 0.01 0.01 11/2/1998 06-PCA-1198 Clearwell Effluent 7.9 774 147 130 229 122 0.02 0.01 12/7/1998 06-PCA-1298 Clearwell Effluent 7.9 744 157 130 231 160 0.03 0.02 1/4/1999 06-PCA-0199 Clearwell Effluent 7.9 745 161 137 255 140 0.02 0.02 2/1/1999 06-PCA-0299 Clearwell Effluent 7.9 601 142 109 207 113 0.03 0.01 3/1/1999 06-PCA-0399 Clearwell Effluent 7.7 657 142 115 224 126 0.01 0.01 4/5/1999 06-PCA-0499 Clearwell Effluent 7.8 731 147 119 229 123 0.01 0.02 5/3/1999 06-PCA-0599 Clearwell Effluent 7.8 715 151 125 236 127 ND 0.01 6/1/1999 06-PCA-0699 Clearwell Effluent 7.7 803 154 131 250 135 ND 0.02 7/6/1999 06-PCA-0799 Clearwell Effluent 7.8 881 155 138 252 149 0.04 0.01 8/2/1999 06-PCA-0899 Clearwell Effluent 7.8 893 159 141 258 146 0.02 0.01 9/7/1999 06-PCA-0999 Clearwell Effluent 7.8 907 165 147 260 142 0.01 0.01 10/4/1999 06-PCA-1099 Clearwell Effluent 7.6 720 104 68 220 134 0.02 0.01 11/1/1999 06-PCA-1199 Clearwell Effluent 7.5 911 166 143 256 142 0.04 0.01 1/3/2000 06-PCA-0100 Clearwell Effluent 7.8 725 113 78 228 143 2/7/2000 06-PCA-0200 Clearwell Effluent 7.6 709 106 80 225 141 3/6/2000 06-PCA-0300 Clearwell Effluent 7.5 753 153 124 233 135 4/3/2000 06-PCA-0400 Clearwell Effluent 7.9 673 106 75 217 131 5/1/2000 06-PCA-0500 Clearwell Effluent 7.8 799 161 128 257 138 6/5/2000 06-PCA-0600 Clearwell Effluent 7.9 837 180 139 263 158 7/5/2000 06-PCA-0700 Clearwell Effluent 7.9 919 157 142 269 150 8/7/2000 06-PCA-0800 Clearwell Effluent 7.7 942 141 152 254 130 9/5/2000 06-PCA-0900 Clearwell Effluent 7.7 969 139 164 256 130 10/2/2000 06-PCA-1000 Clearwell Effluent 7.5 900 130 134 252 140 11/7/2000 06-PCA-1100 Clearwell Effluent 7.8 745 102 67 223 133 12/11/2000 06-PCA-1200 Clearwell Effluent 8.0 654 105 77 226 133 1/2/2001 06-PCA-0101 Clearwell Effluent 8.1 727 108 80 236 116 2/5/2001 06-PCA-0201 Clearwell Effluent 8.1 778 109 79 224 136 3/5/2001 06-PCA-0301 Clearwell Effluent 8.1 778 109 79 224 136 4/2/2001 06-PCA-0401 Clearwell Effluent 7.9 834 110 81 232 140 5/7/2001 06-PCA-0501 Clearwell Effluent 7.9 1053 136 132 282 158 6/4/2001 06-PCA-0601 Clearwell Effluent 8.2 1068 135 127 307 170 7/9/2001 06-PCA-0701 Clearwell Effluent 8.0 1157 151 142 320 176 8/6/2001 06-PCA-0801 Clearwell Effluent 8.0 1110 127 137 289 145 9/4/2001 06-PCA-0901 Clearwell Effluent 7.8 1069 128 137 268 153 0.01 0.01 10/8/2001 06-PCA-1001 Clearwell Effluent 7.7 1045 124 142 260 144 0.03 0.02 11/5/2001 06-PCA-1101 Clearwell Effluent 7.7 1041 134 136 275 143 12/3/2001 06-PCA-1201 Clearwell Effluent 7.8 866 116 86 239 141 0.01 0.11 1/2/2002 06-PCA-0102 Clearwell Effluent 7.9 873 116 88 241 143 DATE SAMPLE ID SAMPLE POINT pH COND ALK Cl- TH CaH Fe Mn 2/4/2002 06-PCA-0202 Clearwell Effluent 8.0 839 113 90 227 145 3/12/2002 06-PCA-0302 Clearwell Effluent 8.0 838 116 82 231 145 ND 0.01 4/2/2002 06-PCA-0402 Clearwell Effluent 7.8 835 116 78 242 141 5/6/2002 06-PCA-0502 Clearwell Effluent 7.9 822 118 80 240 140 0.02 0.02 6/3/2002 06-PCA-0602 Clearwell Effluent 7.8 1011 123 127 272 148 0.01 ND 7/1/2002 06-PCA-0702 Clearwell Effluent 8.2 1111 149 156 141 165 0.22 0.06 8/5/2002 06-PCA-0802 Clearwell Effluent 7.6 884 131 105 260 164 0.12 ND 9/9/2002 06-PCA-0902 Clearwell Effluent 7.9 923 122 112 241 138 ND ND 10/7/2002 06-PCA-1002 Clearwell Effluent 7.7 815 106 100 221 135 0.01 ND 11/4/2002 06-PCA-1102 Clearwell Effluent 7.7 852 112 95 207 131 0.02 0.01 12/3/2002 06-PCA-1202 Clearwell Effluent 7.8 891 116 93 245 151 0.01 0.01 1/7/2003 06-PCA-0103 Clearwell Effluent 7.7 1099 131 146 295 163 0.01 0.01 2/3/2003 06-PCA-0203 Clearwell Effluent 7.9 908 122 88 251 155 0.02 ND 3/3/2003 06-PCA-0303 Clearwell Effluent 7.6 850 109 87 246 146 0.02 0.07 4/7/2003 06-PCA-0403 Clearwell Effluent 7.9 813 109 90 234 142 0.01 0.01 5/5/2003 06-PCA-0503 Clearwell Effluent 7.8 1017 133 131 283 158 0.02 0.01 6/3/2003 06-PCA-0603 Clearwell Effluent 7.7 1040 141 129 284 163 0.01 0.05 7/7/2003 06-PCA-0703 Clearwell Effluent 7.9 1052 142 134 289 167 0.03 0.01 8/4/2003 06-PCA-0803 Clearwell Effluent 8.0 1148 142 146 308 171 0.01 0.01 9/2/2003 06-PCA-0903 Clearwell Effluent 8.0 1202 137 146 306 177 0.01 0.02 10/6/2003 06-PCA-1003 Clearwell Effluent 7.9 809 105 78 224 136 11/3/2003 06-PCA-1103 Clearwell Effluent 8.0 850 115 78 254 157 0.01 ND 12/1/2003 06-PCA-1203 Clearwell Effluent 7.9 826 119 84 260 152 0.73 ND 1/5/2004 06-PCA-0104 Clearwell Effluent 7.7 808 120 89 295 173 0.57 0.11 2/2/2004 06-PCA-0204 Clearwell Effluent 7.5 862 106 94 245 139 0.02 0.01 3/1/2004 06-PCA-0304 Clearwell Effluent 7.6 1007 124 116 287 160 0.02 0.01 4/5/2004 06-PCA-0404 Clearwell Effluent 7.6 1004 124 123 273 160 0.07 0.01 5/3/2004 06-PCA-0504 Clearwell Effluent 7.6 987 120 118 280 158 0.85 0.16 6/1/2004 06-PCA-0604 Clearwell Effluent 7.7 1028 133 126 281 164 0.39 0.05 7/5/2004 06-PCA-0704 Clearwell Effluent 7.9 1056 137 131 290 164 0.02 0.12 8/2/2004 06-PCA-0804 Clearwell Effluent 7.7 1055 129 128 284 164 0.01 0.01 9/7/2004 06-PCA-0904 Clearwell Effluent 7.9 1113 143 138 284 162 0.25 0.03 10/4/2004 06-PCA-1004 Clearwell Effluent 7.9 825 106 86 211 122 0.02 0.14 11/1/2004 06-PCA-1104 Clearwell Effluent 7.8 789 105 81 213 128 0.07 0.01 12/6/2004 06-PCA-1204 Clearwell Effluent 7.8 839 114 91 237 140 0.04 0.23 1/3/2005 06-PCA-0105 Clearwell Effluent 7.7 864 109 98 240 140 0.12 0.01 2/7/2005 06-PCA-0205 Clearwell Effluent 7.6 643 89 94 160 84 3/7/2005 06-PCA-0305 Clearwell Effluent 7.0 874 112 109 233 124 0.01 0.06 4/4/2005 06-PCA-0405 Clearwell Effluent 7.2 865 121 131 241 140 0.02 0.03 5/2/2005 06-PCA-0505 Clearwell Effluent 8.0 1046 146 166 300 148 6/6/2005 06-PCA-0605 Clearwell Effluent 7.6 1060 148 146 280 148 0.03 ND 7/5/2005 06-PCA-0705 Clearwell Effluent 7.6 1017 163 158 284 156 0.01 0.03 8/1/2005 06-PCA-0805 Clearwell Effluent 7.8 1065 164 161 296 160 9/6/2005 06-PCA-0905 Clearwell Effluent 7.7 1144 171 166 292 158 10/3/2005 06-PCA-1005 Clearwell Effluent 7.6 1133 170 166 302 162 1.34 0.09 11/8/2005 06-PCA-1105 Clearwell Effluent 7.7 1086 170 119 300 164 0.03 0.04 12/15/2005 06-PCA-1205 Clearwell Effluent 7.7 1015 180 175 309 172 0.01 0.01 1/3/2006 06-PCA-0106 Clearwell Effluent 7.7 766 106 125 240 144 2/6/2006 06-PCA-0206 Clearwell Effluent 8.0 849 105 103 226 136 3/6/2006 06-PCA-0306 Clearwell Effluent 7.8 925 158 139 250 140 0.03 0.01 4/3/2006 06-PCA-0406 Clearwell Effluent 7.9 746 93 93 188 114 0.03 0.03 5/1/2006 06-PCA-0506 Clearwell Effluent 7.9 703 84 87 179 116 0.02 0.01 6/5/2006 06-PCA-0606 Clearwell Effluent 8.0 1002 168 162 264 148 0.03 0.01 7/3/2006 06-PCA-0706 Clearwell Effluent 7.8 1031 156 161 262 148 0.02 0.02 8/7/2006 06-PCA-0806 Clearwell Effluent 8.0 1040 158 157 260 138 0.02 0.01 9/5/2006 06-PCA-0906 Clearwell Effluent 7.9 1032 160 160 263 145 0.01 0.01 10/2/2006 06-PCA-1006 Clearwell Effluent 8.4 915 174 160 260 140 0.02 0.03 11/6/2006 06-PCA-1106 Clearwell Effluent 7.9 680 93 79 172 100 0.02 0.01 12/4/2006 06-PCA-1206 Clearwell Effluent 8.4 564 96 74 161 94 0.01 0.01 1/2/1996 05-PCA-0196 Lake Loveland 7.8 360 101 34 114 69 0.32 0.07 2/5/1996 05-PCA-0296 Lake Loveland 8.2 368 107 34 122 77 0.12 ND 3/4/1996 05-PCA-0396 Lake Loveland 8.3 389 109 36 122 73 0.10 ND 4/11/1996 05-PCA-0496 Lake Loveland 8.6 410 113 42 140 84 ND ND 5/6/1996 05-PCA-0596 Lake Loveland 8.8 421 119 39 136 76 ND ND 7/1/1996 05-PCA-0796 Lake Loveland 8.8 431 137 39 140 80 ND ND 8/11/1996 05-PCA-0896 Lake Loveland 8.8 388 139 26 136 84 ND ND 9/3/1996 05-PCA-0996 Lake Loveland 8.8 440 142 50 147 92 ND ND 10/11/1996 05-PCA-1096 Lake Loveland 8.5 441 126 47 141 76 ND ND 11/12/1996 05-PCA-1196 Lake Loveland 7.9 441 137 42 137 76 ND ND 12/9/1996 05-PCA-1296 Lake Loveland 7.8 414 137 47 153 82 ND 0.08 1/6/1997 05-PCA-0197 Lake Loveland 7.8 428 100 30 137 84 0.26 0.07 2/3/1997 05-PCA-0297 Lake Loveland 7.8 433 131 40 160 96 0.22 ND DATE SAMPLE ID SAMPLE POINT pH COND ALK Cl- TH CaH Fe Mn 3/3/1997 05-PCA-0397 Lake Loveland 8.7 446 133 37 156 92 0.15 ND 4/7/1997 05-PCA-0497 Lake Loveland 8.3 432 132 45 148 96 ND ND 5/5/1997 05-PCA-0597 Lake Loveland 8.8 478 132 52 160 98 0.15 ND 6/2/1997 05-PCA-0697 Lake Loveland 8.9 473 134 49 152 92 ND ND 7/7/1997 05-PCA-0797 Lake Loveland 8.8 462 130 55 158 88 ND ND 8/4/1997 05-PCA-0897 Lake Loveland 8.6 503 138 88 167 85 ND ND 9/2/1997 05-PCA-0997 Lake Loveland 8.8 475 124 57 149 81 ND ND 10/6/1997 05-PCA-1097 Lake Loveland 8.7 476 128 58 149 85 0.05 0.02 11/3/1997 05-PCA-1197 Lake Loveland 8.2 492 132 54 155 96 0.07 0.02 12/2/1997 05-PCA-1297 Lake Loveland 7.8 479 136 54 153 96 0.06 0.15 1/5/1998 05-PCA-0198 Lake Loveland 8.1 485 133 51 159 87 0.00 0.02 2/2/1998 05-PCA-0298 Lake Loveland 8.1 472 137 52 161 91 0.07 0.02 3/2/1998 05-PCA-0398 Lake Loveland 7.8 407 106 44 130 77 0.77 0.03 4/7/1998 05-PCA-0498 Lake Loveland 8.0 338 86 39 107 57 5/4/1998 05-PCA-0598 Lake Loveland 8.7 314 86 37 98 53 6/1/1998 05-PCA-0698 Lake Loveland 8.7 317 95 39 107 61 0.56 0.02 7/6/1998 05-PCA-0798 Lake Loveland 8.8 371 103 42 114 67 0.04 0.02 8/3/1998 05-PCA-0898 Lake Loveland 8.5 372 110 39 121 73 0.04 0.01 9/8/1998 05-PCA-0998 Lake Loveland 8.4 399 112 47 126 69 0.03 ND 10/5/1998 05-PCA-1098 Lake Loveland 8.2 379 108 47 126 73 11/2/1998 05-PCA-1198 Lake Loveland 8.0 374 114 47 124 67 0.04 0.01 12/7/1998 05-PCA-1298 Lake Loveland 7.8 282 112 41 118 69 0.07 0.06 1/4/1999 05-PCA-0199 Lake Loveland 7.6 344 106 42 124 70 0.12 0.08 2/1/1999 05-PCA-0299 Lake Loveland 7.8 377 110 31 126 75 0.16 0.07 3/1/1999 05-PCA-0399 Lake Loveland 8.3 304 114 33 133 83 0.20 0.03 4/5/1999 05-PCA-0499 Lake Loveland 7.9 268 117 46 139 83 0.09 0.03 5/3/1999 05-PCA-0599 Lake Loveland 8.3 317 112 49 143 79 0.05 0.01 6/1/1999 05-PCA-0699 Lake Loveland 8.8 333 126 49 132 88 0.07 0.01 7/6/1999 05-PCA-0799 Lake Loveland 8.8 289 126 54 155 89 0.06 0.01 8/2/1999 05-PCA-0899 Lake Loveland 8.7 475 127 54 155 91 0.20 0.12 9/7/1999 05-PCA-0999 Lake Loveland 8.5 459 122 56 146 85 0.04 0.01 10/4/1999 05-PCA-1099 Lake Loveland 8.5 534 128 54 155 90 0.03 0.01 11/1/1999 05-PCA-1199 Lake Loveland 8.2 488 126 55 149 85 0.04 0.01 1/3/2000 05-PCA-0100 Lake Loveland 7.6 454 131 54 142 85 2/7/2000 05-PCA-0200 Lake Loveland 7.9 413 134 53 150 85 3/6/2000 05-PCA-0300 Lake Loveland 7.6 452 134 53 159 94 4/3/2000 05-PCA-0400 Lake Loveland 8.6 430 140 50 173 92 6/5/2000 05-PCA-0600 Lake Loveland 8.5 500 142 56 169 94 7/5/2000 05-PCA-0700 Lake Loveland 8.8 504 131 58 158 90 8/7/2000 05-PCA-0800 Lake Loveland 8.9 503 127 59 154 79 9/5/2000 05-PCA-0900 Lake Loveland 8.6 503 127 61 159 81 10/2/2000 05-PCA-1000 Lake Loveland 8.4 516 132 63 156 77 11/7/2000 05-PCA-1100 Lake Loveland 8.0 514 135 208 201 83 12/13/2000 05-PCA-1200 Lake Loveland 7.8 478 139 56 166 91 1/2/2001 05-PCA-0101 Lake Loveland 7.4 515 70 61 164 84 2/5/2001 05-PCA-0201 Lake Loveland 7.9 521 121 57 168 92 3/5/2001 05-PCA-0301 Lake Loveland 7.9 521 121 57 168 92 4/2/2001 05-PCA-0401 Lake Loveland 8.8 550 145 59 170 94 5/7/2001 05-PCA-0501 Lake Loveland 8.8 541 128 59 170 75 6/4/2001 05-PCA-0601 Lake Loveland 9.4 504 104 63 141 54 7/9/2001 05-PCA-0701 Lake Loveland 8.7 516 111 65 153 66 8/6/2001 05-PCA-0801 Lake Loveland 9.2 543 115 73 128 62 0.05 0.02 9/4/2001 05-PCA-0901 Lake Loveland 9.4 550 109 66 140 54 0.01 ND 10/8/2001 05-PCA-1001 Lake Loveland 9.2 543 120 71 144 66 0.02 0.01 11/5/2001 05-PCA-1101 Lake Loveland 8.2 565 130 73 163 72 12/3/2001 05-PCA-1201 Lake Loveland 7.6 573 144 68 179 80 1/2/2002 05-PCA-0102 Lake Loveland 7.7 575 149 68 179 88 2/4/2002 05-PCA-0202 Lake Loveland 7.8 582 152 68 168 96 3/12/2002 05-PCA-0302 Lake Loveland 8.5 582 153 73 176 92 0.01 0.01 4/2/2002 05-PCA-0402 Lake Loveland 8.9 585 154 68 192 90 5/6/2002 05-PCA-0502 Lake Loveland 8.7 584 152 76 172 80 0.01 0.02 6/3/2002 05-PCA-0602 Lake Loveland 9.0 532 112 59 149 47 0.25 7/1/2002 05-PCA-0702 Lake Loveland 9.1 534 123 88 294 51 0.09 0.02 8/5/2002 05-PCA-0802 Lake Loveland 9.3 570 134 88 145 0.24 0.03 9/9/2002 05-PCA-0902 Lake Loveland 156 90 162 67 0.05 0.01 10/7/2002 05-PCA-1002 Lake Loveland 8.1 616 144 90 171 76 0.04 0.09 11/4/2002 05-PCA-1102 Lake Loveland 7.6 616 150 83 173 80 0.12 0.11 12/3/2002 05-PCA-1202 Lake Loveland 7.7 617 158 80 196 86 0.12 0.25 1/7/2003 05-PCA-0103 Lake Loveland 7.5 624 160 74 179 88 0.06 0.07 2/3/2003 05-PCA-0203 Lake Loveland 8.2 606 157 78 183 94 0.07 0.07 3/3/2003 05-PCA-0303 Lake Loveland 7.9 621 162 77 188 96 0.06 0.04 4/7/2003 05-PCA-0403 Lake Loveland 8.3 622 160 84 183 100 0.01 0.01 DATE SAMPLE ID SAMPLE POINT pH COND ALK Cl- TH CaH Fe Mn 5/5/2003 05-PCA-0503 Lake Loveland 8.2 661 158 84 192 98 0.02 0.01 6/3/2003 05-PCA-0603 Lake Loveland 8.5 648 165 77 195 100 0.02 0.01 7/7/2003 05-PCA-0703 Lake Loveland 8.4 654 169 60 196 104 0.03 0.01 8/4/2003 05-PCA-0803 Lake Loveland 8.5 479 165 89 199 97 ND ND 9/2/2003 05-PCA-0903 Lake Loveland 8.3 684 162 87 198 97 0.01 0.01 10/6/2003 05-PCA-1003 Lake Loveland 8.0 693 161 74 194 96 11/3/2003 05-PCA-1103 Lake Loveland 7.6 666 163 82 198 93 0.06 0.03 12/1/2003 05-PCA-1203 Lake Loveland 7.4 684 166 82 194 95 0.06 0.24 1/5/2004 05-PCA-0104 Lake Loveland 7.7 609 160 88 211 93 0.02 0.02 2/2/2004 05-PCA-0204 Lake Loveland 7.8 697 162 79 198 93 0.04 0.03 3/1/2004 05-PCA-0304 Lake Loveland 7.7 676 160 83 196 94 0.09 0.04 4/5/2004 05-PCA-0404 Lake Loveland 7.5 671 167 89 197 100 0.01 0.01 5/3/2004 05-PCA-0504 Lake Loveland 7.9 714 167 86 201 91 0.03 0.02 6/1/2004 05-PCA-0604 Lake Loveland 8.1 693 163 91 200 94 0.04 0.02 7/5/2004 05-PCA-0704 Lake Loveland 8.0 696 161 89 194 87 0.06 0.01 8/2/2004 05-PCA-0804 Lake Loveland 8.2 708 155 78 194 83 0.20 0.01 9/7/2004 05-PCA-0904 Lake Loveland 8.1 709 153 96 190 79 0.03 ND 10/4/2004 05-PCA-1004 Lake Loveland 7.8 718 151 101 183 69 0.02 0.01 11/1/2004 05-PCA-1104 Lake Loveland 7.5 659 142 88 185 76 0.18 0.03 12/6/2004 05-PCA-1204 Lake Loveland 7.6 661 151 88 189 82 0.04 0.09 1/3/2005 05-PCA-0105 Lake Loveland 7.3 649 140 86 180 80 0.20 0.07 2/7/2005 05-PCA-0205 Lake Loveland 7.1 486 112 67 136 68 0.52 0.02 3/7/2005 05-PCA-0305 Lake Loveland 7.5 450 98 20 144 76 0.24 0.02 4/4/2005 05-PCA-0405 Lake Loveland 6.9 439 102 62 132 66 0.45 0.09 5/2/2005 05-PCA-0505 Lake Loveland 8.5 444 110 62 188 104 0.05 0.01 6/6/2005 05-PCA-0605 Lake Loveland 7.8 485 118 50 144 84 2.02 0.02 7/5/2005 05-PCA-0705 Lake Loveland 8.4 484 123 56 158 88 0.27 0.01 8/1/2005 05-PCA-0805 Lake Loveland 8.5 495 131 60 160 90 9/6/2005 05-PCA-0905 Lake Loveland 8.2 516 142 61 160 82 10/3/2005 05-PCA-1005 Lake Loveland 7.8 515 135 92 162 57 0.02 0.02 11/8/2005 05-PCA-1105 Lake Loveland 7.5 507 139 57 164 96 0.01 0.01 12/15/2005 05-PCA-1205 Lake Loveland 7.4 484 132 56 160 96 0.02 0.02 1/3/2006 05-PCA-0106 Lake Loveland 7.4 493 135 55 160 90 2/6/2006 05-PCA-0206 Lake Loveland 7.9 524 139 59 166 98 3/6/2006 05-PCA-0306 Lake Loveland 7.7 531 70 65 172 102 0.14 0.10 4/3/2006 05-PCA-0406 Lake Loveland 8.3 559 144 62 184 112 0.06 0.01 5/1/2006 05-PCA-0506 Lake Loveland 8.5 525 119 69 176 85 0.09 0.02 6/5/2006 05-PCA-0606 Lake Loveland 8.7 545 148 67 186 110 0.04 0.01 7/3/2006 05-PCA-0706 Lake Loveland 8.5 564 146 68 188 112 0.02 0.01 8/7/2006 05-PCA-0806 Lake Loveland 8.5 475 152 62 188 112 0.02 0.01 9/5/2006 05-PCA-0906 Lake Loveland 8.6 538 152 65 183 102 0.02 0.00 10/2/2006 05-PCA-1006 Lake Loveland 8.5 575 151 65 192 108 0.03 0.01 11/6/2006 05-PCA-1106 Lake Loveland 8.0 585 151 67 187 108 0.04 0.02 12/4/2006 05-PCA-1206 Lake Loveland 7.8 547 154 68 18 101 0.07 0.08 1/2/1996 01-PCA-0196 Sweetwater Lake Surface 7.9 737 155 104 223 1265 0.50 0.13 2/5/1996 01-PCA-0296 Sweetwater Lake Surface 7.8 663 141 89 203 114 0.20 0.06 3/4/1996 01-PCA-0396 Sweetwater Lake Surface 8.2 697 147 99 211 118 0.26 0.05 4/11/1996 01-PCA-0496 Sweetwater Lake Surface 7.7 737 151 94 220 128 0.13 0.06 5/6/1996 01-PCA-0596 Sweetwater Lake Surface 7.8 773 156 107 220 128 0.20 0.25 6/3/1996 01-PCA-0696 Sweetwater Lake Surface 8.0 791 160 115 232 132 0.30 0.19 7/1/1996 01-PCA-0796 Sweetwater Lake Surface 7.8 799 183 102 228 128 0.16 0.16 8/11/1996 01-PCA-0896 Sweetwater Lake Surface 7.9 865 187 125 224 140 0.20 0.16 9/3/1996 01-PCA-0996 Sweetwater Lake Surface 8.1 844 218 120 217 133 0.45 0.17 10/7/1996 01-PCA-1096 Sweetwater Lake Surface 8.2 876 206 130 245 129 0.60 0.20 11/12/1996 01-PCA-1196 Sweetwater Lake Surface 8.0 870 178 146 245 141 0.54 0.19 12/9/1996 01-PCA-1296 Sweetwater Lake Surface 8.0 896 185 146 257 121 0.39 0.16 1/6/1997 01-PCA-0197 Sweetwater Lake Surface 8.4 954 159 156 277 149 0.44 0.07 2/3/1997 01-PCA-0297 Sweetwater Lake Surface 7.6 838 156 119 257 137 0.34 0.05 3/3/1997 01-PCA-0397 Sweetwater Lake Surface 7.7 770 168 92 240 124 0.16 0.07 4/7/1997 01-PCA-0497 Sweetwater Lake Surface 8.1 826 158 114 250 156 ND 0.04 5/5/1997 01-PCA-0597 Sweetwater Lake Surface 7.5 889 156 126 258 149 ND ND 6/2/1997 01-PCA-0697 Sweetwater Lake Surface 8.0 936 164 107 260 152 0.21 0.15 7/7/1997 01-PCA-0797 Sweetwater Lake Surface 8.1 937 166 129 268 148 0.21 0.27 8/4/1997 01-PCA-0897 Sweetwater Lake Surface 7.9 932 167 127 267 155 ND 0.03 9/2/1997 01-PCA-0997 Sweetwater Lake Surface 7.8 941 158 136 264 144 0.33 0.08 10/6/1997 01-PCA-1097 Sweetwater Lake Surface 7.8 955 149 144 256 136 0.45 0.05 11/3/1997 01-PCA-1197 Sweetwater Lake Surface 7.7 1004 153 153 273 147 0.63 0.16 12/2/1997 01-PCA-1297 Sweetwater Lake Surface 8.1 1007 151 162 270 168 0.51 0.08 1/5/1998 01-PCA-0198 Sweetwater Lake Surface 7.9 1072 153 167 293 153 0.83 0.14 2/2/1998 01-PCA-0298 Sweetwater Lake Surface 7.9 1144 158 182 317 161 0.37 0.05 3/2/1998 01-PCA-0398 Sweetwater Lake Surface 8.3 946 120 149 260 142 0.69 0.06 4/7/1998 01-PCA-0498 Sweetwater Lake Surface 8.0 787 123 123 235 126 DATE SAMPLE ID SAMPLE POINT pH COND ALK Cl- TH CaH Fe Mn 5/4/1998 01-PCA-0598 Sweetwater Lake Surface 7.7 734 126 113 214 110 0.20 0.12 6/1/1998 01-PCA-0698 Sweetwater Lake Surface 7.4 676 130 100 201 110 0.38 0.10 7/6/1998 01-PCA-0798 Sweetwater Lake Surface 7.6 700 134 100 210 116 0.03 0.15 8/3/1998 01-PCA-0898 Sweetwater Lake Surface 7.6 765 150 108 219 134 0.06 0.02 9/8/1998 01-PCA-0998 Sweetwater Lake Surface 8.3 804 152 113 221 122 0.04 0.01 10/5/1998 01-PCA-1098 Sweetwater Lake Surface 8.0 796 154 115 225 124 0.08 0.04 11/2/1998 01-PCA-1198 Sweetwater Lake Surface 7.9 762 159 116 227 123 0.13 0.04 12/7/1998 01-PCA-1298 Sweetwater Lake Surface 8.2 702 163 122 233 130 0.22 0.06 1/4/1999 01-PCA-0199 Sweetwater Lake Surface 7.8 737 159 127 256 136 0.32 0.10 2/1/1999 01-PCA-0299 Sweetwater Lake Surface 7.7 622 157 109 227 124 0.25 0.05 3/1/1999 01-PCA-0399 Sweetwater Lake Surface 7.6 639 151 100 223 128 0.11 0.03 4/5/1999 01-PCA-0499 Sweetwater Lake Surface 8.2 714 153 108 236 131 0.11 0.02 5/3/1999 01-PCA-0599 Sweetwater Lake Surface 7.6 675 162 108 229 129 0.11 0.03 6/1/1999 01-PCA-0699 Sweetwater Lake Surface 8.4 779 166 118 254 138 0.08 0.01 7/6/1999 01-PCA-0799 Sweetwater Lake Surface 7.7 823 167 118 249 136 0.10 0.02 8/2/1999 01-PCA-0899 Sweetwater Lake Surface 8.2 831 171 128 260 147 0.22 0.04 9/7/1999 01-PCA-0999 Sweetwater Lake Surface 8.2 885 175 134 260 142 0.22 0.07 10/4/1999 01-PCA-1099 Sweetwater Lake Surface 8.1 842 176 127 258 142 0.07 0.03 11/1/1999 01-PCA-1199 Sweetwater Lake Surface 7.7 820 181 134 269 144 0.25 0.10 1/3/2000 01-PCA-0100 Sweetwater Lake Surface 7.6 842 175 138 273 145 2/7/2000 01-PCA-0200 Sweetwater Lake Surface 7.7 784 169 127 264 126 3/6/2000 01-PCA-0300 Sweetwater Lake Surface 7.5 697 167 111 236 134 4/3/2000 01-PCA-0400 Sweetwater Lake Surface 7.6 750 172 109 245 133 5/1/2000 01-PCA-0500 Sweetwater Lake Surface 7.8 757 175 109 261 138 6/5/2000 01-PCA-0500 Sweetwater Lake Surface 7.6 836 181 124 263 154 7/5/2000 01-PCA-0700 Sweetwater Lake Surface 8.5 891 176 137 268 154 8/7/2000 01-PCA-0800 Sweetwater Lake Surface 8.3 908 158 137 250 125 9/5/2000 01-PCA-0900 Sweetwater Lake Surface 8.0 930 162 147 256 128 10/2/2000 01-PCA-1000 Sweetwater Lake Surface 7.9 942 176 141 266 136 11/7/2000 01-PCA-1100 Sweetwater Lake Surface 7.7 959 169 149 267 138 12/15/2000 01-PCA-1200 Sweetwater Lake Surface 7.9 821 175 147 282 142 1/2/2001 01-PCA-0101 Sweetwater Lake Surface 8.4 821 176 151 284 144 2/5/2001 01-PCA-0201 Sweetwater Lake Surface 8.0 922 156 142 268 144 3/5/2001 01-PCA-0301 Sweetwater Lake Surface 8.0 922 156 142 268 144 4/2/2001 01-PCA-0401 Sweetwater Lake Surface 7.8 915 134 112 256 150 5/7/2001 01-PCA-0501 Sweetwater Lake Surface 8.0 994 146 122 278 162 6/4/2001 01-PCA-0601 Sweetwater Lake Surface 8.2 1019 153 123 290 170 7/9/2001 01-PCA-0701 Sweetwater Lake Surface 7.8 1074 163 133 307 176 8/6/2001 01-PCA-0801 Sweetwater Lake Surface 8.5 1074 137 130 289 153 9/4/2001 01-PCA-0901 Sweetwater Lake Surface 8.2 1093 142 142 293 149 0.09 0.12 10/8/2001 01-PCA-1001 Sweetwater Lake Surface 8.0 1065 148 151 297 140 0.03 0.08 11/5/2001 01-PCA-1101 Sweetwater Lake Surface 8.1 1087 156 163 295 147 0.37 0.60 12/3/2001 01-PCA-1201 Sweetwater Lake Surface 7.4 1100 160 156 293 159 0.32 0.16 1/2/2002 01-PCA-0102 Sweetwater Lake Surface 7.6 1122 151 161 287 153 0.34 0.19 2/4/2002 01-PCA-0202 Sweetwater Lake Surface 8.4 1126 151 161 299 156 3/12/2002 01-PCA-0302 Sweetwater Lake Surface 7.8 1005 138 109 259 168 0.35 0.03 4/2/2002 01-PCA-0402 Sweetwater Lake Surface 8.1 1038 148 136 297 158 0.04 0.01 5/6/2002 01-PCA-0502 Sweetwater Lake Surface 7.9 1022 148 139 292 164 0.19 0.05 6/3/2002 01-PCA-0602 Sweetwater Lake Surface 8.1 1053 150 107 228 160 0.12 0.03 7/1/2002 01-PCA-0702 Sweetwater Lake Surface 8.1 1070 157 146 310 163 0.06 0.08 8/5/2002 01-PCA-0802 Sweetwater Lake Surface 8.3 1046 150 156 298 157 0.31 0.21 9/9/2002 01-PCA-0902 Sweetwater Lake Surface 8.1 1112 150 154 293 146 0.26 0.17 10/7/2002 01-PCA-1002 Sweetwater Lake Surface 7.8 1106 146 168 307 197 0.54 0.69 11/4/2002 01-PCA-1102 Sweetwater Lake Surface 7.8 1093 140 147 306 155 1.74 0.44 12/3/2002 01-PCA-1202 Sweetwater Lake Surface 7.6 1065 136 136 283 155 1.13 0.35 1/7/2003 01-PCA-0103 Sweetwater Lake Surface 7.8 1067 141 134 295 163 0.71 0.19 2/3/2003 01-PCA-0203 Sweetwater Lake Surface 7.9 1052 137 124 284 159 0.32 0.18 3/3/2003 01-PCA-0303 Sweetwater Lake Surface 7.9 1004 140 121 296 156 0.17 0.09 4/7/2003 01-PCA-0403 Sweetwater Lake Surface 7.6 1010 136 126 284 163 0.16 0.03 5/5/2003 01-PCA-0503 Sweetwater Lake Surface 7.9 978 140 129 287 163 0.08 0.06 6/3/2003 01-PCA-0603 Sweetwater Lake Surface 7.7 992 145 124 286 167 0.30 0.04 7/7/2003 01-PCA-0703 Sweetwater Lake Surface 8.3 1036 146 121 292 167 0.11 0.04 8/4/2003 01-PCA-0803 Sweetwater Lake Surface 8.1 1152 148 129 309 173 0.01 0.01 9/2/2003 01-PCA-0903 Sweetwater Lake Surface 8.1 1176 145 139 317 170 0.03 ND 10/6/2003 01-PCA-1003 Sweetwater Lake Surface 7.6 1117 160 139 308 173 11/3/2003 01-PCA-1103 Sweetwater Lake Surface 7.9 984 145 126 296 171 0.72 0.29 12/1/2003 01-PCA-1203 Sweetwater Lake Surface 7.9 906 140 124 296 165 0.42 0.11 1/5/2004 01-PCA-0104 Sweetwater Lake Surface 7.5 858 137 121 312 169 0.32 0.06 2/2/2004 01-PCA-0204 Sweetwater Lake Surface 7.4 1007 134 116 308 165 0.08 0.04 3/1/2004 01-PCA-0304 Sweetwater Lake Surface 7.8 975 129 116 283 163 1.70 0.05 4/5/2004 01-PCA-0404 Sweetwater Lake Surface 7.5 975 138 111 271 154 0.31 0.02 5/3/2004 01-PCA-0504 Sweetwater Lake Surface 7.5 998 138 111 280 162 2.08 0.23 DATE SAMPLE ID SAMPLE POINT pH COND ALK Cl- TH CaH Fe Mn 6/1/2004 01-PCA-0604 Sweetwater Lake Surface 7.9 998 141 116 294 162 0.30 0.14 7/5/2004 01-PCA-0704 Sweetwater Lake Surface 7.7 1002 146 118 286 160 0.21 0.02 8/2/2004 01-PCA-0804 Sweetwater Lake Surface 8.1 1020 137 126 288 154 0.05 0.01 9/7/2004 01-PCA-0904 Sweetwater Lake Surface 7.9 1081 145 121 288 162 0.05 0.04 10/4/2004 01-PCA-1004 Sweetwater Lake Surface 7.9 1079 146 133 284 160 0.32 0.05 11/1/2004 01-PCA-1104 Sweetwater Lake Surface 7.8 989 134 121 277 152 0.57 0.29 12/6/2004 01-PCA-1204 Sweetwater Lake Surface 7.6 1007 135 128 285 154 0.26 0.06 1/3/2005 01-PCA-0105 Sweetwater Lake Surface 7.6 970 132 130 265 156 0.20 0.32 2/7/2005 01-PCA-0205 Sweetwater Lake Surface 7.7 914 142 139 289 148 3/7/2005 01-PCA-0305 Sweetwater Lake Surface 7.6 916 132 144 270 160 0.05 0.01 4/4/2005 01-PCA-0405 Sweetwater Lake Surface 7.0 933 138 144 257 140 0.19 0.03 5/2/2005 01-PCA-0505 Sweetwater Lake Surface 8.0 970 162 146 296 160 6/6/2005 01-PCA-0605 Sweetwater Lake Surface 7.9 1037 164 139 276 152 0.04 0.01 7/5/2005 01-PCA-0705 Sweetwater Lake Surface 8.1 1035 175 146 292 148 0.08 0.05 8/1/2005 01-PCA-0805 Sweetwater Lake Surface 7.5 1023 173 150 296 160 9/6/2005 01-PCA-0905 Sweetwater Lake Surface 8.0 1106 179 150 302 160 10/3/2005 01-PCA-1005 Sweetwater Lake Surface 8.3 1103 181 157 304 163 0.18 0.26 11/8/2005 01-PCA-1105 Sweetwater Lake Surface 8.1 1035 185 151 298 164 0.28 0.11 12/15/2005 01-PCA-1205 Sweetwater Lake Surface 7.5 985 184 151 312 172 0.23 0.08 1/3/2006 01-PCA-0106 Sweetwater Lake Surface 7.6 985 184 165 320 176 2/6/2006 01-PCA-0206 Sweetwater Lake Surface 8.5 831 165 120 240 132 3/6/2006 01-PCA-0306 Sweetwater Lake Surface 8.0 878 168 116 250 140 0.18 0.09 4/3/2006 01-PCA-0406 Sweetwater Lake Surface 8.1 930 178 133 262 144 0.07 0.03 5/1/2006 01-PCA-0506 Sweetwater Lake Surface 8.2 878 169 123 244 146 0.13 0.04 6/5/2006 01-PCA-0606 Sweetwater Lake Surface 8.0 928 178 136 267 158 0.19 0.03 7/3/2006 01-PCA-0706 Sweetwater Lake Surface 8.4 963 172 136 264 151 0.06 0.03 8/7/2006 01-PCA-0806 Sweetwater Lake Surface 8.3 970 171 138 268 139 0.06 0.10 9/5/2006 01-PCA-0906 Sweetwater Lake Surface 8.5 957 169 135 264 140 1.01 0.08 10/2/2006 01-PCA-1006 Sweetwater Lake Surface 8.4 930 177 140 262 139 0.06 0.09 11/6/2006 01-PCA-1106 Sweetwater Lake Surface 8.2 947 183 140 268 145 0.13 0.09 12/4/2006 01-PCA-1206 Sweetwater Lake Surface 8.1 843 176 142 262 136 0.25 0.07 12/15/2000 28-PCA-1200 Aqueduct, Raw 8.3 621 112 65 223 138 1/2/2001 28-PCA-0101 Aqueduct, Raw 8.3 728 114 73 244 128 2/5/2001 28-PCA-0201 Aqueduct, Raw 8.4 760 115 73 224 128 3/5/2001 28-PCA-0301 Aqueduct, Raw 8.4 760 115 73 224 128 4/2/2001 28-PCA-0401 Aqueduct, Raw 8.2 823 116 78 230 144 5/7/2001 28-PCA-0501 Aqueduct, Raw 8.2 831 118 72 278 145 6/4/2001 28-PCA-0601 Aqueduct, Raw 8.2 835 121 65 232 133 7/9/2001 28-PCA-0701 Aqueduct, Raw 7.7 872 121 67 241 148 8/6/2001 28-PCA-0801 Aqueduct, Raw 7.7 849 117 65 239 149 9/4/2001 28-PCA-0901 Aqueduct, Raw 8.0 834 116 71 232 140 0.02 0.02 10/8/2001 28-PCA-1001 Aqueduct, Raw 7.9 808 114 73 227 132 0.87 0.16 11/5/2001 28-PCA-1101 Aqueduct, Raw 7.8 844 118 78 239 143 12/3/2001 28-PCA-1201 Aqueduct, Raw 8.0 849 120 80 243 143 0.01 0.01 1/2/2002 28-PCA-0102 Aqueduct, Raw 8.0 851 120 83 239 145 0.01 0.01 2/4/2002 28-PCA-0202 Aqueduct, Raw 8.2 826 118 83 235 137 3/12/2002 28-PCA-0302 Aqueduct, Raw 8.4 830 122 51 229 138 0.04 0.01 4/2/2002 28-PCA-0402 Aqueduct, Raw 8.5 805 122 73 239 137 0.05 ND 5/6/2002 28-PCA-0502 Aqueduct, Raw 8.1 812 122 80 244 144 0.04 0.03 6/3/2002 28-PCA-0602 Aqueduct, Raw 8.1 826 124 73 240 136 0.01 ND 7/1/2002 28-PCA-0702 Aqueduct, Raw 8.1 844 125 39 247 145 0.04 0.14 8/5/2002 28-PCA-0802 Aqueduct, Raw 8.2 808 123 83 236 141 0.04 0.04 9/9/2002 28-PCA-0902 Aqueduct, Raw 8.0 828 116 85 237 138 0.02 ND 10/7/2002 28-PCA-1002 Aqueduct, Raw 7.8 795 108 95 223 150 0.04 0.14 11/4/2002 28-PCA-1102 Aqueduct, Raw 7.9 833 116 87 239 143 0.05 0.01 12/3/2002 28-PCA-1202 Aqueduct, Raw 8.0 868 121 88 240 151 0.05 0.01 1/7/2003 28-PCA-0103 Aqueduct, Raw 8.0 858 125 83 251 159 0.02 0.01 2/3/2003 28-PCA-0203 Aqueduct, Raw 8.2 893 125 83 255 157 0.01 0.01 3/3/2003 28-PCA-0303 Aqueduct, Raw 8.0 830 119 84 242 135 0.04 0.01 4/7/2003 28-PCA-0403 Aqueduct, Raw 8.0 794 113 82 237 142 0.01 0.01 5/5/2003 28-PCA-0503 Aqueduct, Raw 7.9 767 107 82 215 131 0.05 0.05 6/3/2003 28-PCA-0603 Aqueduct, Raw 7.7 708 105 72 209 125 0.03 0.01 7/7/2003 28-PCA-0703 Aqueduct, Raw 7.9 755 107 74 204 121 0.01 0.01 8/4/2003 28-PCA-0803 Aqueduct, Raw 7.9 826 112 77 228 136 0.01 ND 9/2/2003 28-PCA-0903 Aqueduct, Raw 8.0 843 112 74 225 139 0.01 0.01 10/6/2003 28-PCA-1003 Aqueduct, Raw 7.9 785 111 74 227 135 11/3/2003 28-PCA-1103 Aqueduct, Raw 8.1 828 119 75 252 154 1.23 0.03 12/1/2003 28-PCA-1203 Aqueduct, Raw 7.9 770 124 84 260 153 0.13 0.01 1/5/2004 28-PCA-0104 Aqueduct, Raw 8.1 798 128 84 291 173 0.02 0.01 2/2/2004 28-PCA-0204 Aqueduct, Raw 7.9 852 116 89 253 139 0.02 0.02 3/1/2004 28-PCA-0304 Aqueduct, Raw 8.2 760 105 79 215 119 0.04 0.01 4/5/2004 28-PCA-0404 Aqueduct, Raw 7.8 776 111 75 232 127 0.19 0.01 DATE SAMPLE ID SAMPLE POINT pH COND ALK Cl- TH CaH Fe Mn 5/3/2004 28-PCA-0504 Aqueduct, Raw 8.0 800 107 70 221 130 0.34 0.32 6/1/2004 28-PCA-0604 Aqueduct, Raw 7.7 791 113 77 237 134 0.16 0.13 7/5/2004 28-PCA-0704 Aqueduct, Raw 8.1 811 117 78 233 150 0.03 0.02 8/2/2004 28-PCA-0804 Aqueduct, Raw 7.7 824 112 78 231 137 0.25 0.02 9/7/2004 28-PCA-0904 Aqueduct, Raw 7.8 789 112 75 217 130 0.02 ND 10/4/2004 28-PCA-1004 Aqueduct, Raw 7.8 796 108 78 213 130 0.88 0.03 11/1/2004 28-PCA-1104 Aqueduct, Raw 7.5 769 109 78 213 132 0.06 0.01 12/6/2004 28-PCA-1204 Aqueduct, Raw 7.8 834 117 85 237 140 0.02 0.01 1/3/2005 28-PCA-0105 Aqueduct, Raw 7.8 800 113 90 240 136 0.07 0.01 2/7/2005 28-PCA-0205 Aqueduct, Raw 7.7 625 94 84 160 84 3/7/2005 28-PCA-0305 Aqueduct, Raw 7.5 617 102 55 185 86 0.07 0.01 4/4/2005 28-PCA-0405 Aqueduct, Raw 7.5 701 118 89 181 108 0.02 0.01 5/2/2005 28-PCA-0505 Aqueduct, Raw 8.0 795 118 107 276 144 6/6/2005 28-PCA-0605 Aqueduct, Raw 8.0 865 118 79 240 144 0.01 0.07 7/5/2005 28-PCA-0705 Aqueduct, Raw 7.8 887 119 86 252 156 ND 0.08 8/1/2005 28-PCA-0805 Aqueduct, Raw 7.8 866 117 82 256 152 9/6/2005 28-PCA-0905 Aqueduct, Raw 7.5 911 126 62 248 152 10/3/2005 28-PCA-1005 Aqueduct, Raw 7.7 864 121 82 240 144 0.03 0.01 11/8/2005 28-PCA-1105 Aqueduct, Raw 7.7 875 123 88 252 158 0.01 0.03 12/15/2005 28-PCA-1205 Aqueduct, Raw 7.7 810 123 87 270 160 0.01 0.01 1/3/2006 28-PCA-0106 Aqueduct, Raw 8.1 724 117 83 238 142 2/6/2006 28-PCA-0206 Aqueduct, Raw 8.3 830 112 93 224 138 3/6/2006 28-PCA-0306 Aqueduct, Raw 4/3/2006 28-PCA-0406 Aqueduct, Raw 8.2 726 97 82 376 230 0.02 ND 5/1/2006 28-PCA-0506 Aqueduct, Raw 8.4 663 93 72 180 119 0.03 0.01 6/5/2006 28-PCA-0606 Aqueduct, Raw 8.2 695 97 72 198 122 0.05 0.01 7/3/2006 28-PCA-0706 Aqueduct, Raw 8.0 715 97 63 193 124 0.01 ND 8/7/2006 28-PCA-0806 Aqueduct, Raw 8.1 764 99 72 206 134 0.55 0.01 9/5/2006 28-PCA-0906 Aqueduct, Raw 7.9 755 278 75 220 130 0.01 0.00 10/2/2006 28-PCA-1006 Aqueduct, Raw 8.1 670 100 75 200 124 0.02 0.01 11/6/2006 28-PCA-1106 Aqueduct, Raw 7.9 644 97 72 171 105 0.02 0.00 12/4/2006 28-PCA-1206 Aqueduct, Raw 7.8 531 93 71 165 92 0.01 ND Date Sampled Sample Point Compound Method ppb Det. Limit Units 11/20/02 Harwood Well 1,1,1,2-Tetrachloroethane 524.2 ND 0.5 μg/l 11/20/02 Harwood Well 1,1,1-Trichloroethane 524.2 ND 0.5 μg/l 11/20/02 Harwood Well 1,1,2,2-Tetrachloroethane 524.2 ND 0.5 μg/l 11/20/02 Harwood Well 1,1,2-Trichloroethane 524.2 ND 0.5 μg/l 11/20/02 Harwood Well 1,1-Dichloroethane 524.2 ND 0.5 μg/l 11/20/02 Harwood Well 1,1-Dichloroethylene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well 1,1-Dichloropropene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well 1,2,3-Trichlorobenzene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well 1,2,3-Trichloropropane (TCP) 524.2 ND 0.5 μg/l 11/20/02 Harwood Well 1,2,3-Trimethylbenzene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well z 524.2 ND 0.5 μg/l 11/20/02 Harwood Well 1,2,4-Trimethylbenzene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well 1,2-Dichlorobenzene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well 1,2-Dichloroethane (1,2-DCA) 524.2 ND 0.5 μg/l 11/20/02 Harwood Well 1,2-Dichloropropane 524.2 ND 0.5 μg/l 11/20/02 Harwood Well 1,3,5-Trichlorobenzene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well 1,3,5-Trimethylbenzene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well 1,3-Dichlorobenzene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well 1,3-Dichloropropane 524.2 ND 0.5 μg/l 11/20/02 Harwood Well 1,3-Dichloropropene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well 1,4-Dichlorobenzene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well 2,2-Dichloropropane 524.2 ND 0.5 μg/l 11/20/02 Harwood Well 2-Chlorotoluene (ortho) 524.2 ND 0.5 μg/l 11/20/02 Harwood Well 4-Chlorotoluene (para) 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Benzene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Bromobenzene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Bromochloromethane 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Bromodichloromethane 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Bromoform 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Bromomethane (Methyl bromide) 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Carbon Tetrachloride 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Chlorodibromomethane 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Chloroethane 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Chloroform (Trichloromethane) 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Chloromethane (Methyl chloride) 524.2 ND 0.5 μg/l 11/20/02 Harwood Well cis-1,2-Dichloroethylene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well cis-1,3-Dichloropropene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Dibromochloromethane 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Dibromomethane 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Dichlorodifluoromethane (Freon 12) 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Dichloromethane (Methylenchlor) 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Ethyl Benzene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Hexachlorobutadiene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Isopropylbenzene (Cumene) 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Methyl Tert-butyl ether (MTBE) 524.2 ND 3.0 μg/l 11/20/02 Harwood Well Monochlorobenzene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Naphthalene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well n-Butylbenzene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well n-Propylbenzene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well p-Isopropyltoluene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well sec-Butylbenzene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Styrene (Vinylbenzene) 524.2 ND 0.5 μg/l 11/20/02 Harwood Well tert-Butylbenzene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Tetrachloroethylene (PCE) 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Toluene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well trans-1,2-Dichloroethylene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well trans-1,3-Dichloropropene 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Trichloroethylene (TCE) 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Trichlorofluoromethane (freon 11) 524.2 ND 5.0 μg/l 11/20/02 Harwood Well Trichlorotrifluoromethane (freon 113) 524.2 ND 10.0 μg/l 11/20/02 Harwood Well Vinyl chloride (VC) 524.2 ND 0.5 μg/l 11/20/02 Harwood Well Xylenes (Total) 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake 1,1,1,2-Tetrachloroethane 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake 1,1,1-Trichloroethane 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake 1,1,2,2-Tetrachloroethane 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake 1,1,2-Trichloroethane 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake 1,1-Dichloroethane 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake 1,1-Dichloroethylene 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake 1,1-Dichloropropene 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake 1,2,3-Trichlorobenzene 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake 1,2,3-Trichloropropane (TCP) 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake 1,2,4-Trichlorobenzene 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake 1,2,4-Trimethylbenzene 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake 1,2-Dichloroethane (1,2-DCA) 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake 1,2-Dichloropropane 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake 1,3,5-Trimethylbenzene 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake 1,3-Dichloropropane 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake 1,4-Dichlorobenzene 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake 2,2-Dichloropropane 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake 2-Butanone (Methyl Ethyl Ketone) 524.2 ND 5.0 μg/l 02/23/96 Sweetwater Lake 2-Chloroethylvinyl ether 524.2 ND 1.0 μg/l 02/23/96 Sweetwater Lake 2-Chlorotoluene (ortho) 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake 4-Chlorotoluene (para) 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake 4-Methyl-2-Pentanone (MIBK) 524.2 ND 5.0 μg/l 02/23/96 Sweetwater Lake Benzene 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake Bromobenzene 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake Bromochloromethane 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake Bromodichloromethane 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake Bromoform 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake Bromomethane (Methyl bromide) 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake Carbon Tetrachloride 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake Chlorobenzene 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake Chlorodibromomethane 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake Chloroethane 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake Chloroform (Trichloromethane) 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake Chloromethane (Methyl chloride) 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake cis-1,2-Dichloroethylene 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake cis-1,3-Dichloropropene 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake Dibromomethane 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake Dichlorodifluoromethane (Freon 12) 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake Dichloromethane (Methylenchlor) 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake Ethyl Benzene 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake Fluorotrichloromethane (freon11) 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake Hexachlorobutadiene 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake Isopropylbenzene (Cumene) 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake m,p-Xylenes (Total) 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake m-Dichlorobenzene (1,3-DCB) 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake Methyl Tert-butyl ether (MTBE) 524.2 ND 5.0 μg/l 02/23/96 Sweetwater Lake Naphthalene 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake n-Butylbenzene 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake n-Propylbenzene 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake o-Dichlorobenzene (1,2-DCB) 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake o-Xylene 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake p-Isopropyltoluene 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake sec-Butylbenzene 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake Styrene (Vinylbenzene) 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake tert-Butylbenzene 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake Tetrachloroethylene (PCE) 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake Toluene 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake trans-1,2-Dichloroethylene 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake trans-1,3-Dichloropropene 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake Trichloroethylene (TCE) 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake Trichlorotrifluoroethane (Freon 113) 524.2 ND 0.5 μg/l 02/23/96 Sweetwater Lake Vinyl chloride (VC) 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake 1,1,1,2-Tetrachloroethane 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake 1,1,1-Trichloroethane 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake 1,1,2,2-Tetrachloroethane 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake 1,1,2-Trichloroethane 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake 1,1-Dichloroethane 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake 1,1-Dichloroethylene 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake 1,1-Dichloropropene 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake 1,2,3-Trichlorobenzene 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake 1,2,3-Trichloropropane (TCP) 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake 1,2,4-Trichlorobenzene 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake 1,2,4-Trimethylbenzene 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake 1,2-Dichloroethane (1,2-DCA) 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake 1,2-Dichloropropane 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake 1,3,5-Trimethylbenzene 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake 1,3-Dichloropropane 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake 1,4-Dichlorobenzene 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake 2,2-Dichloropropane 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake 2-Butanone (Methyl Ethyl Ketone) 524.2 ND 5.0 μg/l 03/24/97 Sweetwater Lake 2-Chloroethylvinyl ether 524.2 ND 1.0 μg/l 03/24/97 Sweetwater Lake 2-Chlorotoluene (ortho) 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake 4-Chlorotoluene (para) 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake 4-Methyl-2-Pentanone (MIBK) 524.2 ND 5.0 μg/l 03/24/97 Sweetwater Lake Benzene 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake Bromobenzene 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake Bromochloromethane 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake Bromodichloromethane 524.2 1.00 0.5 μg/l 03/24/97 Sweetwater Lake Bromoform 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake Bromomethane (Methyl bromide) 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake Carbon Tetrachloride 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake Chlorobenzene 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake Chlorodibromomethane 524.2 0.80 0.5 μg/l 03/24/97 Sweetwater Lake Chloroethane 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake Chloroform (Trichloromethane) 524.2 1.40 0.5 μg/l 03/24/97 Sweetwater Lake Chloromethane (Methyl chloride) 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake cis-1,2-Dichloroethylene 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake cis-1,3-Dichloropropene 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake Dibromomethane 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake Dichlorodifluoromethane (Freon 12) 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake Dichloromethane (Methylenchlor) 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake Ethyl Benzene 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake Fluorotrichloromethane (freon11) 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake Hexachlorobutadiene 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake Isopropylbenzene (Cumene) 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake m,p-Xylenes (Total) 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake m-Dichlorobenzene (1,3-DCB) 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake Methyl Tert-butyl ether (MTBE) 524.2 ND 5.0 μg/l 03/24/97 Sweetwater Lake Naphthalene 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake n-Butylbenzene 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake n-Propylbenzene 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake o-Dichlorobenzene (1,2-DCB) 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake o-Xylene 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake p-Isopropyltoluene 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake sec-Butylbenzene 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake Styrene (Vinylbenzene) 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake tert-Butylbenzene 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake Tetrachloroethylene (PCE) 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake Toluene 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake trans-1,2-Dichloroethylene 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake trans-1,3-Dichloropropene 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake Trichloroethylene (TCE) 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake Trichlorotrifluoroethane (Freon 113) 524.2 ND 0.5 μg/l 03/24/97 Sweetwater Lake Vinyl chloride (VC) 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake 1,1,1,2-Tetrachloroethane 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake 1,1,1-Trichloroethane 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake 1,1,2,2-Tetrachloroethane 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake 1,1,2-Trichloroethane 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake 1,1-Dichloroethane 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake 1,1-Dichloroethylene 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake 1,1-Dichloropropene 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake 1,2,3-Trichlorobenzene 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake 1,2,3-Trichloropropane (TCP) 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake 1,2,4-Trichlorobenzene 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake 1,2,4-Trimethylbenzene 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake 1,2-Dichloroethane (1,2-DCA) 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake 1,2-Dichloropropane 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake 1,3,5-Trimethylbenzene 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake 1,3-Dichloropropane 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake 2,2-Dichloropropane 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake 2-Butanone (Methyl Ethyl Ketone) 524.2 ND 5.0 μg/l 08/11/98 Sweetwater Lake 4-Methyl-2-Pentanone (MIBK) 524.2 ND 5.0 μg/l 08/11/98 Sweetwater Lake Benzene 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Bromobenzene 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Bromochloromethane 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Bromodichloromethane 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Bromoform 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Bromomethane (Methyl bromide) 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Carbon Tetrachloride 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Chlorobenzene 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Chlorodibromomethane 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Chloroethane 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Chloroform (Trichloromethane) 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Chloromethane (Methyl chloride) 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake cis-1,2-Dichloroethylene 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake cis-1,3-Dichloropropene 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Dibromomethane 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Dichlorodifluoromethane (Freon 12) 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Dichloromethane (Methylenchlor) 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Di-isopropyl ether 524.2 ND 5.0 μg/l 08/11/98 Sweetwater Lake Ethyl Benzene 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Fluorotrichloromethane (freon11) 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Hexachlorobutadiene 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Isopropylbenzene (Cumene) 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake m,p-Xylenes (Total) 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake m-Dichlorobenzene (1,3-DCB) 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Methyl Tert-butyl ether (MTBE) 524.2 ND 5.0 μg/l 08/11/98 Sweetwater Lake Naphthalene 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake n-Butylbenzene 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake n-Propylbenzene 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake o-Chlorotoluene 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake o-Dichlorobenzene (1,2-DCB) 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake o-Xylene 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake p-Chlorotoluene 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake p-Dichlorobenzene (1,4-DCB) 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake p-Isopropyltoluene 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake sec-Butylbenzene 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Styrene (Vinylbenzene) 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Tert amyl methyl ether (TAME) 524.2 ND 5.0 μg/l 08/11/98 Sweetwater Lake Tert-Butyl Ethyl Ether (ETBE) 524.2 ND 5.0 μg/l 08/11/98 Sweetwater Lake tert-Butylbenzene 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Tetrachloroethylene (PCE) 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Toluene 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake trans-1,2-Dichloroethylene 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake trans-1,3-Dichloropropene 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Trichloroethylene (TCE) 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Trichlorotrifluoroethane (Freon 113) 524.2 ND 0.5 μg/l 08/11/98 Sweetwater Lake Vinyl chloride (VC) 524.2 ND 0.3 μg/l 08/24/99 Sweetwater Lake 1,1,1,2-Tetrachloroethane 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake 1,1,1-Trichloroethane 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake 1,1,2,2-Tetrachloroethane 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake 1,1,2-Trichloroethane 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake 1,1-Dichloroethane 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake 1,1-Dichloroethylene 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake 1,1-Dichloropropene 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake 1,2,3-Trichlorobenzene 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake 1,2,3-Trichloropropane (TCP) 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake 1,2,4-Trichlorobenzene 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake 1,2,4-Trimethylbenzene 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake 1,2-Dichloroethane (1,2-DCA) 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake 1,2-Dichloropropane 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake 1,3,5-Trimethylbenzene 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake 1,3-Dichloropropane 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake 2,2-Dichloropropane 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake 2-Butanone (Methyl Ethyl Ketone) 524.2 ND 5.0 μg/l 08/24/99 Sweetwater Lake 4-Methyl-2-Pentanone (MIBK) 524.2 ND 5.0 μg/l 08/24/99 Sweetwater Lake Benzene 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Bromobenzene 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Bromochloromethane 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Bromodichloromethane 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Bromoform 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Bromomethane (Methyl bromide) 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Carbon Tetrachloride 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Chlorobenzene 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Chlorodibromomethane 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Chloroethane 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Chloroform (Trichloromethane) 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Chloromethane (Methyl chloride) 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake cis-1,2-Dichloroethylene 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake cis-1,3-Dichloropropene 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Dibromomethane 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Dichlorodifluoromethane (Freon 12) 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Dichloromethane (Methylenchlor) 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Di-isopropyl ether 524.2 ND 5.0 μg/l 08/24/99 Sweetwater Lake Ethyl Benzene 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Fluorotrichloromethane (freon11) 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Hexachlorobutadiene 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Isopropylbenzene (Cumene) 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake m,p-Xylenes (Total) 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake m-Dichlorobenzene (1,3-DCB) 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Methyl Tert-butyl ether (MTBE) 524.2 ND 3.0 μg/l 08/24/99 Sweetwater Lake Naphthalene 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake n-Butylbenzene 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake n-Propylbenzene 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake o-Chlorotoluene 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake o-Dichlorobenzene (1,2-DCB) 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake o-Xylene 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake p-Chlorotoluene 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake p-Dichlorobenzene (1,4-DCB) 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake p-Isopropyltoluene 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake sec-Butylbenzene 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Styrene (Vinylbenzene) 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Tert amyl methyl ether (TAME) 524.2 ND 3.0 μg/l 08/24/99 Sweetwater Lake Tert-Butyl Ethyl Ether (ETBE) 524.2 ND 3.0 μg/l 08/24/99 Sweetwater Lake tert-Butylbenzene 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Tetrachloroethylene (PCE) 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Toluene 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake trans-1,2-Dichloroethylene 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake trans-1,3-Dichloropropene 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Trichloroethylene (TCE) 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Trichlorotrifluoroethane (Freon 113) 524.2 ND 0.5 μg/l 08/24/99 Sweetwater Lake Vinyl chloride (VC) 524.2 ND 0.3 μg/l 09/05/00 Sweetwater Lake 1,1,1,2-Tetrachloroethane 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake 1,1,1-Trichloroethane 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake 1,1,2,2-Tetrachloroethane 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake 1,1,2,Trichloro-1,2,2-trifluoroethane 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake 1,1,2-Trichloroethane 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake 1,1-Dichloroethane 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake 1,1-Dichloroethylene 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake 1,1-Dichloropropene 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake 1,2,3-Trichlorobenzene 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake 1,2,3-Trichloropropane (TCP) 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake 1,2,4-Trichlorobenzene 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake 1,2,4-Trimethylbenzene 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake 1,2-Dichloroethane (1,2-DCA) 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake 1,2-Dichloropropane 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake 1,3,5-Trimethylbenzene 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake 1,3-Dichloropropane 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake 2,2-Dichloropropane 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake 2-Butanone (Methyl Ethyl Ketone) 524.2 ND 2.0 μg/l 09/05/00 Sweetwater Lake Acrylonitrile 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Benzene 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Bromobenzene 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Bromochloromethane 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Bromodichloromethane 524.2 0.20 0.2 μg/l 09/05/00 Sweetwater Lake Bromoform 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Bromomethane (Methyl bromide) 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Carbon Tetrachloride 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Chlorobenzene 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Chlorodibromomethane 524.2 0.30 0.2 μg/l 09/05/00 Sweetwater Lake Chloroethane 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Chloroform (Trichloromethane) 524.2 0.20 0.2 μg/l 09/05/00 Sweetwater Lake Chloromethane (Methyl chloride) 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake cis-1,2-Dichloroethylene 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake cis-1,3-Dichloropropene 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Dibromomethane 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Dichlorodifluoromethane (Freon 12) 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake DIPE 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Ethyl Benzene 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Ethyl tert butyl ether (ETBE) 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Fluorotrichloromethane (freon11) 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Hexachlorobutadiene 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Hexachloroethane 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Isopropylbenzene (Cumene) 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake m,p-Xylenes (Total) 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake m-Dichlorobenzene (1,3-DCB) 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Methyl Tert-butyl ether (MTBE) 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Methylene Chloride (Dichloromethane) 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Naphthalene 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake n-Butylbenzene 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake n-Propylbenzene 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake o-Chlorotoluene 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake o-Dichlorobenzene (1,2-DCB) 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake o-Xylene 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake p-Chlorotoluene 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake p-Dichlorobenzene (1,4-DCB) 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake p-Isopropyltoluene 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake sec-Butylbenzene 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Styrene (Vinylbenzene) 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Tert amyl methyl ether (TAME) 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Tetrachloroethylene (PCE) 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Toluene 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake trans-1,2-Dichloroethylene 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake trans-1,3-Dichloropropene 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Trichloroethylene (TCE) 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Vinyl bromide 524.2 ND 0.2 μg/l 09/05/00 Sweetwater Lake Vinyl chloride (VC) 524.2 ND 0.2 μg/l 10/04/00 Sweetwater Lake 1,1,1,2-Tetrachloroethane 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake 1,1,1-Trichloroethane 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake 1,1,2,2-Tetrachloroethane 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake 1,1,2-Trichloroethane 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake 1,1-Dichloroethane 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake 1,1-Dichloroethylene 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake 1,1-Dichloropropene 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake 1,2,3-Trichlorobenzene 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake 1,2,3-Trichloropropane (TCP) 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake 1,2,4-Trichlorobenzene 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake 1,2,4-Trimethylbenzene 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake 1,2-Dichloroethane (1,2-DCA) 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake 1,2-Dichloropropane 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake 1,3,5-Trimethylbenzene 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake 1,3-Dichloropropane 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake 2,2-Dichloropropane 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake 2-Butanone (Methyl Ethyl Ketone) 524.2 ND 5.0 μg/l 10/04/00 Sweetwater Lake 4-Methyl-2-Pentanone (MIBK) 524.2 ND 5.0 μg/l 10/04/00 Sweetwater Lake Benzene 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Bromobenzene 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Bromochloromethane 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Bromodichloromethane 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Bromoform 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Bromomethane (Methyl bromide) 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Carbon Tetrachloride 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Chlorobenzene 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Chlorodibromomethane 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Chloroethane 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Chloroform (Trichloromethane) 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Chloromethane (Methyl chloride) 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake cis-1,2-Dichloroethylene 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake cis-1,3-Dichloropropene 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Dibromomethane 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Dichlorodifluoromethane (Freon 12) 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Dichloromethane (Methylenchlor) 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Di-isopropyl ether 524.2 ND 5.0 μg/l 10/04/00 Sweetwater Lake Ethyl Benzene 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Fluorotrichloromethane (freon11) 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Hexachlorobutadiene 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Isopropylbenzene (Cumene) 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake m,p-Xylenes (Total) 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake m-Dichlorobenzene (1,3-DCB) 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Methyl Tert-butyl ether (MTBE) 524.2 ND 3.0 μg/l 10/04/00 Sweetwater Lake Naphthalene 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake n-Butylbenzene 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake n-Propylbenzene 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake o-Chlorotoluene 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake o-Dichlorobenzene (1,2-DCB) 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake o-Xylene 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake p-Chlorotoluene 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake p-Dichlorobenzene (1,4-DCB) 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake p-Isopropyltoluene 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake sec-Butylbenzene 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Styrene (Vinylbenzene) 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Tert amyl methyl ether (TAME) 524.2 ND 3.0 μg/l 10/04/00 Sweetwater Lake Tert-Butyl Ethyl Ether (ETBE) 524.2 ND 3.0 μg/l 10/04/00 Sweetwater Lake tert-Butylbenzene 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Tetrachloroethylene (PCE) 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Toluene 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Total THM 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake trans-1,2-Dichloroethylene 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake trans-1,3-Dichloropropene 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Trichloroethylene (TCE) 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Trichlorotrifluoroethane (Freon 113) 524.2 ND 0.5 μg/l 10/04/00 Sweetwater Lake Vinyl chloride (VC) 524.2 ND 0.3 μg/l 10/04/00 Sweetwater Lake Xylenes (Total) 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake 1,1,1,2-Tetrachloroethane 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake 1,1,1-Trichloroethane 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake 1,1,2,2-Tetrachloroethane 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake 1,1,2-Trichloroethane 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake 1,1-Dichloroethane 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake 1,1-Dichloroethylene 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake 1,1-Dichloropropene 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake 1,2,3-Trichlorobenzene 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake 1,2,3-Trichloropropane (TCP) 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake 1,2,4-Trichlorobenzene 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake 1,2,4-Trimethylbenzene 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake 1,2-Dichloroethane (1,2-DCA) 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake 1,2-Dichloropropane 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake 1,3,5-Trimethylbenzene 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake 1,3-Dichloropropane 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake 2,2-Dichloropropane 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake 2-Butanone (Methyl Ethyl Ketone) 524.2 ND 5.0 μg/l 10/11/01 Sweetwater Lake 4-Methyl-2-Pentanone (MIBK) 524.2 ND 5.0 μg/l 10/11/01 Sweetwater Lake Benzene 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Bromobenzene 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Bromochloromethane 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Bromodichloromethane 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Bromoform 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Bromomethane (Methyl bromide) 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Carbon Tetrachloride 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Chlorobenzene 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Chlorodibromomethane 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Chloroethane 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Chloroform (Trichloromethane) 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Chloromethane (Methyl chloride) 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake cis-1,2-Dichloroethylene 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake cis-1,3-Dichloropropene 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Dibromomethane 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Dichlorodifluoromethane (Freon 12) 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Dichloromethane (Methylenchlor) 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Di-isopropyl ether 524.2 ND 5.0 μg/l 10/11/01 Sweetwater Lake Ethyl Benzene 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Fluorotrichloromethane (freon11) 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Hexachlorobutadiene 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Isopropylbenzene (Cumene) 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake m,p-Xylenes (Total) 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake m-Dichlorobenzene (1,3-DCB) 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Methyl Tert-butyl ether (MTBE) 524.2 ND 1.0 μg/l 10/11/01 Sweetwater Lake Naphthalene 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake n-Butylbenzene 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake n-Propylbenzene 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake o-Chlorotoluene 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake o-Dichlorobenzene (1,2-DCB) 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake o-Xylene 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake p-Chlorotoluene 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake p-Dichlorobenzene (1,4-DCB) 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake p-Isopropyltoluene 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake sec-Butylbenzene 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Styrene (Vinylbenzene) 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Tert amyl methyl ether (TAME) 524.2 ND 3.0 μg/l 10/11/01 Sweetwater Lake Tert-Butyl Ethyl Ether (ETBE) 524.2 ND 3.0 μg/l 10/11/01 Sweetwater Lake tert-Butylbenzene 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Tetrachloroethylene (PCE) 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Toluene 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Total THM 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake trans-1,2-Dichloroethylene 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake trans-1,3-Dichloropropene 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Trichloroethylene (TCE) 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Trichlorotrifluoroethane (Freon 113) 524.2 ND 0.5 μg/l 10/11/01 Sweetwater Lake Vinyl chloride (VC) 524.2 ND 0.3 μg/l 10/11/01 Sweetwater Lake Xylenes (Total) 524.2 ND 0.5 μg/l 01/21/02 Sweetwater Lake Dichlorodifluoromethane (Freon 12) 524.2 ND 0.5 μg/l 01/21/02 Sweetwater Lake Ethyl tert butyl ether (ETBE) 524.2 ND 1.0 μg/l 01/21/02 Sweetwater Lake Methyl Tert-butyl ether (MTBE) 524.2 ND 1.0 μg/l 01/21/02 Sweetwater Lake Nitrobenzene 524.2 ND 5.0 μg/l 01/21/02 Sweetwater Lake Tert amyl methyl ether (TAME) 524.2 ND 1.0 μg/l 01/21/02 Sweetwater Lake Tert butyl alcohol (TBA) 524.2 ND 10.0 μg/l 04/09/02 Sweetwater Lake Dichlorodifluoromethane (Freon 12) 524.2 ND 0.5 μg/l 04/09/02 Sweetwater Lake Ethyl tert butyl ether (ETBE) 524.2 ND 1.0 μg/l 04/09/02 Sweetwater Lake Methyl Tert-butyl ether (MTBE) 524.2 ND 1.0 μg/l 04/09/02 Sweetwater Lake Nitrobenzene 524.2 ND 5.0 μg/l 04/09/02 Sweetwater Lake Tert amyl methyl ether (TAME) 524.2 ND 1.0 μg/l 04/09/02 Sweetwater Lake Tert butyl alcohol (TBA) 524.2 ND 10.0 μg/l 07/11/02 Sweetwater Lake Dichlorodifluoromethane (Freon 12) 524.2 ND 0.5 μg/l 07/11/02 Sweetwater Lake Ethyl tert butyl ether (ETBE) 524.2 ND 3.0 μg/l 07/11/02 Sweetwater Lake Methyl Tert-butyl ether (MTBE) 524.2 ND 5.0 μg/l 07/11/02 Sweetwater Lake Nitrobenzene 524.2 ND 10.0 μg/l 07/11/02 Sweetwater Lake Tert amyl methyl ether (TAME) 524.2 ND 3.0 μg/l 07/11/02 Sweetwater Lake Tert butyl alcohol (TBA) 524.2 ND 2.0 μg/l 10/16/02 Sweetwater Lake Dichlorodifluoromethane (Freon 12) 524.2 ND 0.5 μg/l 10/16/02 Sweetwater Lake Ethyl tert butyl ether (ETBE) 524.2 ND 3.0 μg/l 10/16/02 Sweetwater Lake Methyl Tert-butyl ether (MTBE) 524.2 ND 1.0 μg/l 10/16/02 Sweetwater Lake Nitrobenzene 524.2 ND 5.0 μg/l 10/16/02 Sweetwater Lake Tert amyl methyl ether (TAME) 524.2 ND 3.0 μg/l 10/16/02 Sweetwater Lake Tert butyl alcohol (TBA) 524.2 ND 2.0 μg/l 11/11/02 Sweetwater Lake 1,1,1,2-Tetrachloroethane 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake 1,1,1-Trichloroethane 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake 1,1,2,2-Tetrachloroethane 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake 1,1,2-Trichloroethane 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake 1,1-Dichloroethane 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake 1,1-Dichloroethylene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake 1,1-Dichloropropene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake 1,2,3-Trichlorobenzene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake 1,2,3-Trichloropropane (TCP) 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake 1,2,3-Trimethylbenzene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake 1,2,4-Trichlorobenzene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake 1,2,4-Trimethylbenzene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake 1,2-Dichlorobenzene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake 1,2-Dichloroethane (1,2-DCA) 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake 1,2-Dichloropropane 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake 1,3,5-Trichlorobenzene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake 1,3,5-Trimethylbenzene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake 1,3-Dichlorobenzene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake 1,3-Dichloropropane 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake 1,3-Dichloropropene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake 1,4-Dichlorobenzene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake 2,2-Dichloropropane 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake 2-Chlorotoluene (ortho) 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake 4-Chlorotoluene (para) 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Benzene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Bromobenzene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Bromochloromethane 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Bromodichloromethane 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Bromoform 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Bromomethane (Methyl bromide) 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Carbon Tetrachloride 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Chlorodibromomethane 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Chloroethane 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Chloroform (Trichloromethane) 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Chloromethane (Methyl chloride) 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake cis-1,2-Dichloroethylene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake cis-1,3-Dichloropropene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Dibromochloromethane 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Dibromomethane 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Dichlorodifluoromethane (Freon 12) 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Dichloromethane (Methylenchlor) 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Ethyl Benzene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Hexachlorobutadiene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Isopropylbenzene (Cumene) 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Methyl Tert-butyl ether (MTBE) 524.2 ND 3.0 μg/l 11/11/02 Sweetwater Lake Monochlorobenzene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Naphthalene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake n-Butylbenzene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake n-Propylbenzene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake p-Isopropyltoluene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake sec-Butylbenzene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Styrene (Vinylbenzene) 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake tert-Butylbenzene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Tetrachloroethylene (PCE) 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Toluene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake trans-1,2-Dichloroethylene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake trans-1,3-Dichloropropene 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Trichloroethylene (TCE) 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Trichlorofluoromethane (freon 11) 524.2 ND 5.0 μg/l 11/11/02 Sweetwater Lake Trichlorotrifluoromethane (freon 113) 524.2 ND 10.0 μg/l 11/11/02 Sweetwater Lake Vinyl chloride (VC) 524.2 ND 0.5 μg/l 11/11/02 Sweetwater Lake Xylenes (Total) 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake 1,1,1,2-Tetrachloroethane 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake 1,1,1-Trichloroethane 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake 1,1,2,2-Tetrachloroethane 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake 1,1,2-Trichloroethane 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake 1,1-Dichloroethane 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake 1,1-Dichloroethene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake 1,1-Dichloropropene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake 1,2,3-Trichlorobenzene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake 1,2,3-Trichloropropane (TCP) 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake 1,2,4-Trichlorobenzene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake 1,2,4-Trimethylbenzene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake 1,2-Dibromo-3-chloropropane (DBCP) 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake 1,2-Dibromoethane (EDB) 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake 1,2-Dichlorobenzene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake 1,2-Dichloroethane (1,2-DCA) 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake 1,2-Dichloropropane 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake 1,3,5-Trimethylbenzene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake 1,3-Dichlorobenzene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake 1,3-Dichloropropane 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake 1,4-Dichlorobenzene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake 2,2-Dichloropropane 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake 2-Butanone (Methyl Ethyl Ketone) 524.2 ND 5.0 μg/l 10/22/03 Sweetwater Lake 2-Chlorotoluene (ortho) 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake 2-Hexanone 524.2 ND 5.0 μg/l 10/22/03 Sweetwater Lake 4-Chlorotoluene (para) 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake 4-Isopropyltoluene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake 4-Methyl-2-Pentanone (MIBK) 524.2 ND 5.0 μg/l 10/22/03 Sweetwater Lake Acetone 524.2 ND 5.0 μg/l 10/22/03 Sweetwater Lake Acrylonitrile 524.2 ND 5.0 μg/l 10/22/03 Sweetwater Lake Allyl chloride 524.2 ND 5.0 μg/l 10/22/03 Sweetwater Lake Benzene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Bromobenzene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Bromochloromethane 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Bromodichloromethane 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Bromoform 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Bromomethane (Methyl bromide) 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Carbon disulfide 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Carbon Tetrachloride 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Chlorobenzene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Chloroethane 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Chloroform (Trichloromethane) 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Chloromethane (Methyl chloride) 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake cis-1,2-Dichloroethene (c-1,2-DCE) 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake cis-1,3-Dichloropropene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Dibromochloromethane 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Dibromomethane 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Dichlorodifluoromethane (Freon 12) 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Ethyl Benzene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Ethylmethacrylate 524.2 ND 5.0 μg/l 10/22/03 Sweetwater Lake Hexachlorobutadiene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Isopropylbenzene (Cumene) 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake m,p-Xylene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Methacrylonitrile 524.2 ND 5.0 μg/l 10/22/03 Sweetwater Lake Methyl iodide 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Methyl Tert-butyl ether (MTBE) 502.2 ND 3.0 μg/l 10/22/03 Sweetwater Lake Methylene Chloride (Dichloromethane) 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Methylmethacrylate 524.2 ND 5.0 μg/l 10/22/03 Sweetwater Lake Naphthalene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake n-Butylbenzene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake n-Propylbenzene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake o-Xylene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Pentachloroethane 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Propionitrile 524.2 ND 5.0 μg/l 10/22/03 Sweetwater Lake sec-Butylbenzene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Styrene (Vinylbenzene) 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake tert-Butylbenzene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Tetrachloroethene (PCE) 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Tetrahydrofuran 524.2 ND 10.0 μg/l 10/22/03 Sweetwater Lake Toluene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake trans-1,2-Dichloroethene (t-1,2-DCE) 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake trans-1,3-Dichloropropene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake trans-1,4-Dichloro-2-butene 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Trichloroethene (TCE) 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Trichlorofluoromethane (freon 11) 524.2 ND 5.0 μg/l 10/22/03 Sweetwater Lake Trichlorotrifluoroethane (Freon 113) 524.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Vinyl chloride (VC) 524.2 ND 0.5 μg/l 11/13/03 Sweetwater Lake Methyl Tert-butyl ether (MTBE) 502.2 ND 3.0 μg/l 12/11/03 Sweetwater Lake Methyl Tert-butyl ether (MTBE) 502.2 ND 3.0 μg/l 09/23/04 Sweetwater Lake Methyl Tert-butyl ether (MTBE) 502.2 ND 3.0 μg/l 10/28/04 Sweetwater Lake 1,1,1,2-Tetrachloroethane 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake 1,1,1-Trichloroethane 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake 1,1,2,2-Tetrachloroethane 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake 1,1,2-Trichloroethane 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake 1,1,2-Trichlorotrifluoroethane 524.2 ND 10.0 μg/l 10/28/04 Sweetwater Lake 1,1-Dichloroethane 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake 1,1-Dichloroethene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake 1,1-Dichloropropene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake 1,2,3-Trichlorobenzene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake 1,2,3-Trichloropropane (TCP) 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake 1,2,4-Trichlorobenzene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake 1,2,4-Trimethylbenzene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake 1,2-Dichlorobenzene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake 1,2-Dichloroethane (1,2-DCA) 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake 1,2-Dichloropropane 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake 1,3,5-Trimethylbenzene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake 1,3-Dichlorobenzene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake 1,3-Dichloropropane 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake 1,4-Dichlorobenzene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake 2,2-Dichloropropane 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake 2-Chloroethylvinyl ether 524.2 ND 1.0 μg/l 10/28/04 Sweetwater Lake 2-Chlorotoluene (ortho) 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake 4-Chlorotoluene (para) 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake Benzene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake Bromobenzene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake Bromochloromethane 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake Bromodichloromethane 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake Bromoform 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake Bromomethane (Methyl bromide) 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake Carbon Tetrachloride 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake Chlorobenzene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake Chloroethane 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake Chloroform (Trichloromethane) 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake Chloromethane (Methyl chloride) 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake cis-1,2-Dichloroethylene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake cis-1,3-Dichloropropene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake Dibromochloromethane 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake Dibromomethane 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake Dichlorodifluoromethane (Freon 12) 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake Di-isopropyl ether 524.2 ND 3.0 μg/l 10/28/04 Sweetwater Lake Ethyl Benzene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake Ethyl tert butyl ether (ETBE) 524.2 ND 3.0 μg/l 10/28/04 Sweetwater Lake Hexachlorobutadiene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake Isopropylbenzene (Cumene) 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake m,p-Xylene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake Methyl Chloride 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake Methyl Ethyl Ketone (MEK) 524.2 ND 5.0 μg/l 10/28/04 Sweetwater Lake Methyl Isobutyl Ketone (MIBK) 524.2 ND 5.0 μg/l 10/28/04 Sweetwater Lake Methyl Tert-butyl ether (MTBE) 524.2 ND 3.0 μg/l 10/28/04 Sweetwater Lake Naphthalene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake n-Butylbenzene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake n-Propylbenzene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake o-Xylene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake p-Isopropyltoluene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake sec-Butylbenzene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake Styrene (Vinylbenzene) 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake Tert amyl methyl ether (TAME) 524.2 ND 3.0 μg/l 10/28/04 Sweetwater Lake Tert butyl alcohol (TBA) 524.2 ND 2.0 μg/l 10/28/04 Sweetwater Lake tert-Butylbenzene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake Tetrachloroethene (PCE) 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake Toluene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake trans-1,2-Dichloroethene (t-1,2-DCE) 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake trans-1,3-Dichloropropene 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake Trichloroethene (TCE) 524.2 ND 0.5 μg/l 10/28/04 Sweetwater Lake Trichlorofluoromethane (freon 11) 524.2 ND 5.0 μg/l 10/28/04 Sweetwater Lake Vinyl chloride (VC) 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake 1,1,1,2-Tetrachloroethane 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake 1,1,1-Trichloroethane 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake 1,1,2,2-Tetrachloroethane 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake 1,1,2-Trichloroethane 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake 1,1,2-Trichlorotrifluoroethane 524.2 ND 10.0 μg/l 11/09/05 Sweetwater Lake 1,1-Dichloroethane 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake 1,1-Dichloroethene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake 1,1-Dichloropropene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake 1,2,3-Trichlorobenzene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake 1,2,3-Trichloropropane (TCP) 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake 1,2,4-Trichlorobenzene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake 1,2,4-Trimethylbenzene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake 1,2-Dichlorobenzene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake 1,2-Dichloroethane (1,2-DCA) 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake 1,2-Dichloropropane 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake 1,3,5-Trimethylbenzene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake 1,3-Dichlorobenzene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake 1,3-Dichloropropane 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake 1,4-Dichlorobenzene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake 2,2-Dichloropropane 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake 2-Chloroethylvinyl ether 524.2 ND 1.0 μg/l 11/09/05 Sweetwater Lake 2-Chlorotoluene (ortho) 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake 4-Chlorotoluene (para) 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake Benzene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake Bromobenzene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake Bromochloromethane 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake Bromodichloromethane 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake Bromoform 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake Bromomethane (Methyl bromide) 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake Carbon Tetrachloride 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake Chlorobenzene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake Chloroethane 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake Chloroform (Trichloromethane) 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake Chloromethane (Methyl chloride) 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake cis-1,2-Dichloroethylene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake cis-1,3-Dichloropropene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake Dibromochloromethane 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake Dibromomethane 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake Dichlorodifluoromethane (Freon 12) 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake Di-isopropyl ether 524.2 ND 3.0 μg/l 11/09/05 Sweetwater Lake Ethyl Benzene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake Ethyl tert butyl ether (ETBE) 524.2 ND 3.0 μg/l 11/09/05 Sweetwater Lake Hexachlorobutadiene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake Isopropylbenzene (Cumene) 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake m,p-Xylene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake Methyl Chloride 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake Methyl Ethyl Ketone (MEK) 524.2 ND 5.0 μg/l 11/09/05 Sweetwater Lake Methyl Isobutyl Ketone (MIBK) 524.2 ND 5.0 μg/l 11/09/05 Sweetwater Lake Methyl Tert-butyl ether (MTBE) 524.2 ND 3.0 μg/l 11/09/05 Sweetwater Lake Naphthalene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake n-Butylbenzene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake n-Propylbenzene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake o-Xylene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake p-Isopropyltoluene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake sec-Butylbenzene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake Styrene (Vinylbenzene) 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake Tert amyl methyl ether (TAME) 524.2 ND 3.0 μg/l 11/09/05 Sweetwater Lake Tert butyl alcohol (TBA) 524.2 ND 2.0 μg/l 11/09/05 Sweetwater Lake tert-Butylbenzene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake Tetrachloroethene (PCE) 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake Toluene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake trans-1,2-Dichloroethene (t-1,2-DCE) 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake trans-1,3-Dichloropropene 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake Trichloroethene (TCE) 524.2 ND 0.5 μg/l 11/09/05 Sweetwater Lake Trichlorofluoromethane (freon 11) 524.2 ND 5.0 μg/l 11/09/05 Sweetwater Lake Vinyl chloride (VC) 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake 1,1,1,2-Tetrachloroethane 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake 1,1,1-Trichloroethane 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake 1,1,2,2-Tetrachloroethane 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake 1,1,2-Trichloroethane 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake 1,1,2-Trichlorotrifluoroethane 524.2 ND 10.0 μg/l 08/23/06 Sweetwater Lake 1,1-Dichloroethane 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake 1,1-Dichloroethene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake 1,1-Dichloropropene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake 1,2,3-Trichlorobenzene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake 1,2,3-Trichloropropane (TCP) 524.2 ND 0.0 μg/l 08/23/06 Sweetwater Lake 1,2,4-Trichlorobenzene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake 1,2,4-Trimethylbenzene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake 1,2-Dichlorobenzene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake 1,2-Dichloroethane (1,2-DCA) 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake 1,2-Dichloropropane 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake 1,3,5-Trimethylbenzene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake 1,3-Dichlorobenzene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake 1,3-Dichloropropane 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake 1,4-Dichlorobenzene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake 2,2-Dichloropropane 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake 2-Chloroethylvinyl ether 524.2 ND 1.0 μg/l 08/23/06 Sweetwater Lake 2-Chlorotoluene (ortho) 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake 4-Chlorotoluene (para) 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake Benzene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake Bromobenzene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake Bromochloromethane 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake Bromodichloromethane 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake Bromoform 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake Bromomethane (Methyl bromide) 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake Carbon Tetrachloride 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake Chlorobenzene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake Chloroethane 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake Chloroform (Trichloromethane) 524.2 0.94 0.5 μg/l 08/23/06 Sweetwater Lake Chloromethane (Methyl chloride) 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake cis-1,2-Dichloroethylene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake cis-1,3-Dichloropropene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake Dibromochloromethane 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake Dibromomethane 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake Dichlorodifluoromethane (Freon 12) 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake Di-isopropyl ether 524.2 ND 3.0 μg/l 08/23/06 Sweetwater Lake Ethyl Benzene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake Ethyl tert butyl ether (ETBE) 524.2 ND 3.0 μg/l 08/23/06 Sweetwater Lake Hexachlorobutadiene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake Isopropylbenzene (Cumene) 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake m,p-Xylene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake Methyl Chloride 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake Methyl Ethyl Ketone (MEK) 524.2 ND 5.0 μg/l 08/23/06 Sweetwater Lake Methyl Isobutyl Ketone (MIBK) 524.2 ND 5.0 μg/l 08/23/06 Sweetwater Lake Methyl Tert-butyl ether (MTBE) 524.2 ND 3.0 μg/l 08/23/06 Sweetwater Lake Naphthalene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake n-Butylbenzene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake n-Propylbenzene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake o-Xylene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake p-Isopropyltoluene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake sec-Butylbenzene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake Styrene (Vinylbenzene) 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake Tert amyl methyl ether (TAME) 524.2 ND 3.0 μg/l 08/23/06 Sweetwater Lake Tert butyl alcohol (TBA) 524.2 ND 2.0 μg/l 08/23/06 Sweetwater Lake tert-Butylbenzene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake Tetrachloroethene (PCE) 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake Toluene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake trans-1,2-Dichloroethene (t-1,2-DCE) 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake trans-1,3-Dichloropropene 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake Trichloroethene (TCE) 524.2 ND 0.5 μg/l 08/23/06 Sweetwater Lake Trichlorofluoromethane (freon 11) 524.2 ND 5.0 μg/l 08/23/06 Sweetwater Lake Vinyl chloride (VC) 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake 1,1,1,2-Tetrachloroethane 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake 1,1,1-Trichloroethane 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake 1,1,2,2-Tetrachloroethane 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake 1,1,2-Trichloroethane 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake 1,1,2-Trichlorotrifluoroethane 524.2 ND 10.0 μg/l 09/07/06 Sweetwater Lake 1,1-Dichloroethane 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake 1,1-Dichloroethene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake 1,1-Dichloropropene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake 1,2,3-Trichlorobenzene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake 1,2,3-Trichloropropane (TCP) 524.2 ND 0.0 μg/l 09/07/06 Sweetwater Lake 1,2,4-Trichlorobenzene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake 1,2,4-Trimethylbenzene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake 1,2-Dichlorobenzene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake 1,2-Dichloroethane (1,2-DCA) 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake 1,2-Dichloropropane 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake 1,3,5-Trimethylbenzene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake 1,3-Dichlorobenzene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake 1,3-Dichloropropane 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake 1,4-Dichlorobenzene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake 2,2-Dichloropropane 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake 2-Chloroethylvinyl ether 524.2 ND 1.0 μg/l 09/07/06 Sweetwater Lake 2-Chlorotoluene (ortho) 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake 4-Chlorotoluene (para) 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake Benzene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake Bromobenzene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake Bromochloromethane 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake Bromodichloromethane 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake Bromoform 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake Bromomethane (Methyl bromide) 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake Carbon Tetrachloride 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake Chlorobenzene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake Chloroethane 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake Chloroform (Trichloromethane) 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake Chloromethane (Methyl chloride) 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake cis-1,2-Dichloroethylene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake cis-1,3-Dichloropropene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake Dibromochloromethane 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake Dibromomethane 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake Dichlorodifluoromethane (Freon 12) 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake Di-isopropyl ether 524.2 ND 3.0 μg/l 09/07/06 Sweetwater Lake Ethyl Benzene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake Ethyl tert butyl ether (ETBE) 524.2 ND 3.0 μg/l 09/07/06 Sweetwater Lake Hexachlorobutadiene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake Isopropylbenzene (Cumene) 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake m,p-Xylene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake Methyl Chloride 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake Methyl Ethyl Ketone (MEK) 524.2 ND 5.0 μg/l 09/07/06 Sweetwater Lake Methyl Isobutyl Ketone (MIBK) 524.2 ND 5.0 μg/l 09/07/06 Sweetwater Lake Methyl Tert-butyl ether (MTBE) 524.2 ND 3.0 μg/l 09/07/06 Sweetwater Lake Naphthalene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake n-Butylbenzene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake n-Propylbenzene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake o-Xylene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake p-Isopropyltoluene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake sec-Butylbenzene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake Styrene (Vinylbenzene) 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake Tert amyl methyl ether (TAME) 524.2 ND 3.0 μg/l 09/07/06 Sweetwater Lake Tert butyl alcohol (TBA) 524.2 ND 2.0 μg/l 09/07/06 Sweetwater Lake tert-Butylbenzene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake Tetrachloroethene (PCE) 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake Toluene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake trans-1,2-Dichloroethene (t-1,2-DCE) 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake trans-1,3-Dichloropropene 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake Trichloroethene (TCE) 524.2 ND 0.5 μg/l 09/07/06 Sweetwater Lake Trichlorofluoromethane (freon 11) 524.2 ND 5.0 μg/l 09/07/06 Sweetwater Lake Vinyl chloride (VC) 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well 1,1,1,2-Tetrachloroethane 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well 1,1,1-Trichloroethane 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well 1,1,2,2-Tetrachloroethane 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well 1,1,2-Trichloroethane 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well 1,1-Dichloroethane 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well 1,1-Dichloroethylene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well 1,1-Dichloropropene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well 1,2,3-Trichlorobenzene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well 1,2,3-Trichloropropane (TCP) 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well 1,2,3-Trimethylbenzene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well 1,2,4-Trichlorobenzene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well 1,2,4-Trimethylbenzene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well 1,2-Dichlorobenzene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well 1,2-Dichloroethane (1,2-DCA) 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well 1,2-Dichloropropane 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well 1,3,5-Trichlorobenzene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well 1,3,5-Trimethylbenzene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well 1,3-Dichlorobenzene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well 1,3-Dichloropropane 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well 1,3-Dichloropropene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well 1,4-Dichlorobenzene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well 2,2-Dichloropropane 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well 2-Chlorotoluene (ortho) 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well 4-Chlorotoluene (para) 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Benzene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Bromobenzene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Bromochloromethane 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Bromodichloromethane 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Bromoform 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Bromomethane (Methyl bromide) 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Carbon Tetrachloride 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Chlorodibromomethane 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Chloroethane 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Chloroform (Trichloromethane) 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Chloromethane (Methyl chloride) 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well cis-1,2-Dichloroethylene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well cis-1,3-Dichloropropene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Dibromochloromethane 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Dibromomethane 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Dichlorodifluoromethane (Freon 12) 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Dichloromethane (Methylenchlor) 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Ethyl Benzene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Hexachlorobutadiene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Isopropylbenzene (Cumene) 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Methyl Tert-butyl ether (MTBE) 524.2 ND 3.0 μg/l 12/11/02 Willow Glen Well Monochlorobenzene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Naphthalene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well n-Butylbenzene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well n-Propylbenzene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well p-Isopropyltoluene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well sec-Butylbenzene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Styrene (Vinylbenzene) 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well tert-Butylbenzene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Tetrachloroethylene (PCE) 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Toluene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Total THM 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well trans-1,2-Dichloroethylene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well trans-1,3-Dichloropropene 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Trichloroethylene (TCE) 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Trichlorofluoromethane (freon 11) 524.2 ND 5.0 μg/l 12/11/02 Willow Glen Well Trichlorotrifluoromethane (freon 113) 524.2 ND 10.0 μg/l 12/11/02 Willow Glen Well Vinyl chloride (VC) 524.2 ND 0.5 μg/l 12/11/02 Willow Glen Well Xylenes (Total) 524.2 ND 0.5 μg/l Date Sampled Det. Sample Point Compound Mtd ppb Limit Units 01/09/98 Clearwell Effluent Alachlor (Alanex) 507 ND 0.2 μg/l 01/09/98 Clearwell Effluent Atrazine (AAtrex) 507 ND 0.1 μg/l 01/09/98 Clearwell Effluent Bromacil (Hyvar) 507 ND 2.2 μg/l 01/09/98 Clearwell Effluent Cyanazine 507 ND 0.5 μg/l 01/09/98 Clearwell Effluent Diazinon 507 ND 0.1 μg/l 01/09/98 Clearwell Effluent Dimethoate (Cygon) 507 ND 10 μg/l 01/09/98 Clearwell Effluent Molinate (Ordram) 507 ND 0.4 μg/l 01/09/98 Clearwell Effluent Prometryn (Caparol) 507 ND 0.5 μg/l 01/09/98 Clearwell Effluent Simazine (Princep) 507 0.080 0.07 μg/l 01/09/98 Clearwell Effluent Thiobencarb (Bolero) 507 ND 1 μg/l 04/03/98 Clearwell Effluent Alachlor (Alanex) 507 ND 0.2 μg/l 04/03/98 Clearwell Effluent Atrazine (AAtrex) 507 ND 0.1 μg/l 04/03/98 Clearwell Effluent Bromacil (Hyvar) 507 ND 2.2 μg/l 04/03/98 Clearwell Effluent Cyanazine 507 ND 0.5 μg/l 04/03/98 Clearwell Effluent Diazinon 507 ND 0.1 μg/l 04/03/98 Clearwell Effluent Dimethoate (Cygon) 507 ND 10 μg/l 04/03/98 Clearwell Effluent Molinate (Ordram) 507 ND 0.4 μg/l 04/03/98 Clearwell Effluent Prometryn (Caparol) 507 ND 0.5 μg/l 04/03/98 Clearwell Effluent Simazine (Princep) 507 ND 0.07 μg/l 04/03/98 Clearwell Effluent Thiobencarb (Bolero) 507 ND 1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) 2,4,5-T 515.1 ND 0.2 μg/l 01/29/00 Cottonwood Golf Course (Well west of) 2,4,5-TP (Silvex) 515.1 ND 0.2 μg/l 01/29/00 Cottonwood Golf Course (Well west of) 2,4-D 515.1 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) 2,4-DB 515.1 ND 2 μg/l 01/29/00 Cottonwood Golf Course (Well west of) 2,4-Dinitrotoluene 525.2 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) 2,6-Dinitrotoluene 525.2 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) 3,5-Dichlorobenzoic acid 515.1 ND 0.5 μg/l 01/29/00 Cottonwood Golf Course (Well west of) 3-Hydroxycarbofuran 531 ND 2 μg/l 01/29/00 Cottonwood Golf Course (Well west of) 4,4'-DDD 525.2 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) 4,4'-DDE 525.2 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) 4,4'-DDT 525.2 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) 4-Nitrophenol 515.1 ND 5 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Acenaphthene 525.2 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Acenaphthylene 525.2 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Acetochlor 525.2 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Acifluorfen 515.1 ND 0.2 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Alachlor (Alanex) 525.2 ND 0.05 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Alachlor (Alanex) 508 ND 0.05 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Aldicarb (TEMIK) 531 ND 0.5 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Aldicarb sulfone 531 ND 0.7 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Aldicarb sulfoxide 531 ND 0.5 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Aldrin 525.2 ND 0.05 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Aldrin 508 ND 0.01 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Alpha-BHC 508 ND 0.01 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Anthracene 525.2 ND 0.02 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Atrazine (AAtrex) 525.2 ND 0.05 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Baygon 531 ND 2 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Bentazon (Basagran) 515.1 ND 0.5 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Benz(a)Anthracene 525.2 ND 0.05 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Benzo(a)pyrene 525.2 ND 0.02 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Benzo(b)Fluoranthene 525.2 ND 0.02 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Benzo(g,h,i)Perylene 525.2 ND 0.05 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Benzo(k)Fluoranthene 525.2 ND 0.02 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Beta-BHC 508 ND 0.01 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Bromacil (Hyvar) 525.2 ND 0.2 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Butachlor 525.2 ND 0.05 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Butylbenzylphthalate 525.2 ND 0.5 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Caffeine 525.2 ND 0.02 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Carbaryl (Sevin) 531 ND 2 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Carbofuran (FURADAN) 531 ND 0.9 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Chlopyrifos (Dursban) 525.2 ND 0.05 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Chlordane 525.2 ND 0.05 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Chlordane 508 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Chlorobenzilate 525.2 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Chloroneb 525.2 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Chlorothalonil (Draconil, Brav 508 ND 0.01 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Chrysene 525.2 ND 0.02 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Dalapon 515.1 ND 1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) DCPA 515.1 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Delta-BHC 508 ND 0.01 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Di(2-Ethylhexyl)adipate 525.2 ND 0.6 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Di(2-Ethylhexyl)phthalate 525.2 3.000 0.6 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Diazinon 525.2 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Dibenz(a,h)Anthracene 525.2 ND 0.05 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Dibromochloropropane (DBC 504.1 ND 0.01 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Dicamba (Banvel) 515.1 ND 0.08 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Dichlorprop 515.1 ND 0.5 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Dichlorvos (DDVP) 525.2 ND 0.05 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Dieldrin 525.2 ND 0.2 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Dieldrin 508 ND 0.01 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Diethyl Phthalate 525.2 0.700 0.5 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Dimethoate (Cygon) 525.2 ND 10 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Dimethyl Phthalate 525.2 ND 0.5 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Di-n-Butyl Phthalate 525.2 0.500 0.5 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Di-n-Octyl Phthalate 525.2 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Dinoseb (DNBP) 515.1 ND 0.2 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Endosulfan I (alpha) 508 ND 0.01 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Endosulfan II (beta) 508 ND 0.01 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Endosulfan sulfate 508 ND 0.01 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Endrin 525.2 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Endrin 508 ND 0.01 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Endrin Aldehyde 508 ND 0.01 μg/l 01/29/00 Cottonwood Golf Course (Well west of) EPTC 525.2 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Ethylene Dibromide (EDB) 504.1 ND 0.01 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Fluoranthene 525.2 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Fluorene 525.2 ND 0.05 μg/l 01/29/00 Cottonwood Golf Course (Well west of) gamma-Chlordane 525.2 ND 0.05 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Glyphosate 547 ND 6 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Heptachlor 525.2 ND 0.04 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Heptachlor 508 ND 0.01 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Heptachlor epoxide 508 ND 0.01 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Heptachlor Epoxide (isomer A 525.2 ND 0.02 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Heptachlor Epoxide (isomer B 525.2 ND 0.02 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Hexachlorobenzene 525.2 ND 0.05 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Hexachlorocyclopentadiene 525.2 ND 0.05 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Indeno(1,2,3,c,d)Pyrene 525.2 ND 0.05 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Isophorone 525.2 ND 0.5 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Lindane 525.2 ND 0.02 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Lindane (gamma-BHC) 508 ND 0.01 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Malathion 525.2 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Methiocarb 531 ND 2 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Methomyl 531 ND 1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Methoxychlor 525.2 ND 0.05 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Methoxychlor 508 ND 0.05 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Metolachlor 525.2 ND 0.05 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Metribuzin 525.2 ND 0.05 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Molinate (Ordram) 525.2 ND 0.2 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Naphthalene 525.2 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Nitrobenzene 525.2 ND 5 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Oxamyl (Vydate) 531 ND 2 μg/l 01/29/00 Cottonwood Golf Course (Well west of) p,p' DDD 508 ND 0.01 μg/l 01/29/00 Cottonwood Golf Course (Well west of) p,p' DDE 508 ND 0.01 μg/l 01/29/00 Cottonwood Golf Course (Well west of) p,p' DDT 508 ND 0.01 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Parathion 525.2 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) PCB 1016 Arochlor 508 ND 0.07 μg/l 01/29/00 Cottonwood Golf Course (Well west of) PCB 1221 Arochlor 508 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) PCB 1232 Arochlor 508 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) PCB 1242 Arochlor 508 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) PCB 1248 Arochlor 508 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) PCB 1254 Arochlor 508 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) PCB 1260 Arochlor 508 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Pentachlorophenol (PCP) 525.2 ND 1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Pentachlorophenol (PCP) 515.1 ND 0.04 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Permethrin (mixed isomers) 525.2 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Phenanthrene 525.2 ND 0.02 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Picloram 515.1 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Prometryn (Caparol) 525.2 ND 0.5 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Propachlor 525.2 ND 0.05 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Pyrene 525.2 ND 0.05 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Simazine (Princep) 525.2 ND 0.05 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Terbacil 525.2 ND 0.1 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Thiobencarb (Bolero) 525.2 ND 0.2 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Toxaphene 508 ND 0.5 μg/l 01/29/00 Cottonwood Golf Course (Well west of) trans-Nonachlor 525.2 ND 0.05 μg/l 01/29/00 Cottonwood Golf Course (Well west of) Trifluralin 525.2 ND 0.1 μg/l 02/11/00 Harwood Well 2,4,5-T 515.1 ND 0.2 μg/l 02/11/00 Harwood Well 2,4,5-TP (Silvex) 515.1 ND 0.2 μg/l 02/11/00 Harwood Well 2,4-D 515.1 ND 0.1 μg/l 02/11/00 Harwood Well 2,4-DB 515.1 ND 2 μg/l 02/11/00 Harwood Well 2,4-Dinitrotoluene 525.2 ND 0.1 μg/l 02/11/00 Harwood Well 2,6-Dinitrotoluene 525.2 ND 0.1 μg/l 02/11/00 Harwood Well 3,5-Dichlorobenzoic acid 515.1 ND 0.5 μg/l 02/11/00 Harwood Well 3-Hydroxycarbofuran 531 ND 2 μg/l 02/11/00 Harwood Well 4,4'-DDD 525.2 ND 0.1 μg/l 02/11/00 Harwood Well 4,4'-DDE 525.2 ND 0.1 μg/l 02/11/00 Harwood Well 4,4'-DDT 525.2 ND 0.1 μg/l 02/11/00 Harwood Well 4-Nitrophenol 515.1 ND 5 μg/l 02/11/00 Harwood Well Acenaphthene 525.2 ND 0.1 μg/l 02/11/00 Harwood Well Acenaphthylene 525.2 ND 0.1 μg/l 02/11/00 Harwood Well Acetochlor 525.2 ND 0.1 μg/l 02/11/00 Harwood Well Acifluorfen 515.1 ND 0.2 μg/l 02/11/00 Harwood Well Alachlor (Alanex) 525.2 ND 0.05 μg/l 02/11/00 Harwood Well Alachlor (Alanex) 508 ND 0.05 μg/l 02/11/00 Harwood Well Aldicarb (TEMIK) 531 ND 0.5 μg/l 02/11/00 Harwood Well Aldicarb sulfone 531 ND 0.7 μg/l 02/11/00 Harwood Well Aldicarb sulfoxide 531 ND 0.5 μg/l 02/11/00 Harwood Well Aldrin 525.2 ND 0.05 μg/l 02/11/00 Harwood Well Aldrin 508 ND 0.01 μg/l 02/11/00 Harwood Well Alpha-BHC 508 ND 0.01 μg/l 02/11/00 Harwood Well Anthracene 525.2 ND 0.02 μg/l 02/11/00 Harwood Well Atrazine (AAtrex) 525.2 ND 0.05 μg/l 02/11/00 Harwood Well Baygon 531 ND 2 μg/l 02/11/00 Harwood Well Bentazon (Basagran) 515.1 ND 0.5 μg/l 02/11/00 Harwood Well Benz(a)Anthracene 525.2 ND 0.05 μg/l 02/11/00 Harwood Well Benzo(a)pyrene 525.2 ND 0.02 μg/l 02/11/00 Harwood Well Benzo(b)Fluoranthene 525.2 ND 0.02 μg/l 02/11/00 Harwood Well Benzo(g,h,i)Perylene 525.2 ND 0.05 μg/l 02/11/00 Harwood Well Benzo(k)Fluoranthene 525.2 ND 0.02 μg/l 02/11/00 Harwood Well Beta-BHC 508 ND 0.01 μg/l 02/11/00 Harwood Well Bromacil (Hyvar) 525.2 ND 0.2 μg/l 02/11/00 Harwood Well Butachlor 525.2 ND 0.05 μg/l 02/11/00 Harwood Well Butylbenzylphthalate 525.2 ND 0.5 μg/l 02/11/00 Harwood Well Caffeine 525.2 ND 0.02 μg/l 02/11/00 Harwood Well Carbaryl (Sevin) 531 ND 2 μg/l 02/11/00 Harwood Well Carbofuran (FURADAN) 531 ND 0.9 μg/l 02/11/00 Harwood Well Chlopyrifos (Dursban) 525.2 ND 0.05 μg/l 02/11/00 Harwood Well Chlordane 525.2 ND 0.05 μg/l 02/11/00 Harwood Well Chlordane 508 ND 0.1 μg/l 02/11/00 Harwood Well Chlorobenzilate 525.2 ND 0.1 μg/l 02/11/00 Harwood Well Chloroneb 525.2 ND 0.1 μg/l 02/11/00 Harwood Well Chlorothalonil (Draconil, Brav 508 ND 0.01 μg/l 02/11/00 Harwood Well Chrysene 525.2 ND 0.02 μg/l 02/11/00 Harwood Well Dalapon 515.1 ND 1 μg/l 02/11/00 Harwood Well DCPA 515.1 ND 0.1 μg/l 02/11/00 Harwood Well Delta-BHC 508 ND 0.01 μg/l 02/11/00 Harwood Well Di(2-Ethylhexyl)adipate 525.2 ND 0.6 μg/l 02/11/00 Harwood Well Di(2-Ethylhexyl)phthalate 525.2 ND 0.6 μg/l 02/11/00 Harwood Well Diazinon 525.2 ND 0.1 μg/l 02/11/00 Harwood Well Dibenz(a,h)Anthracene 525.2 ND 0.05 μg/l 02/11/00 Harwood Well Dibromochloropropane (DBC 504.1 ND 0.01 μg/l 02/11/00 Harwood Well Dicamba (Banvel) 515.1 ND 0.08 μg/l 02/11/00 Harwood Well Dichlorprop 515.1 ND 0.5 μg/l 02/11/00 Harwood Well Dichlorvos (DDVP) 525.2 ND 0.05 μg/l 02/11/00 Harwood Well Dieldrin 525.2 ND 0.2 μg/l 02/11/00 Harwood Well Dieldrin 508 ND 0.01 μg/l 02/11/00 Harwood Well Diethyl Phthalate 525.2 ND 0.5 μg/l 02/11/00 Harwood Well Dimethoate (Cygon) 525.2 ND 10 μg/l 02/11/00 Harwood Well Dimethyl Phthalate 525.2 ND 0.5 μg/l 02/11/00 Harwood Well Di-n-Butyl Phthalate 525.2 ND 0.5 μg/l 02/11/00 Harwood Well Di-n-Octyl Phthalate 525.2 ND 0.1 μg/l 02/11/00 Harwood Well Dinoseb (DNBP) 515.1 ND 0.2 μg/l 02/11/00 Harwood Well Endosulfan I (alpha) 508 ND 0.01 μg/l 02/11/00 Harwood Well Endosulfan II (beta) 508 ND 0.01 μg/l 02/11/00 Harwood Well Endosulfan sulfate 508 ND 0.01 μg/l 02/11/00 Harwood Well Endrin 525.2 ND 0.1 μg/l 02/11/00 Harwood Well Endrin 508 ND 0.01 μg/l 02/11/00 Harwood Well Endrin Aldehyde 508 ND 0.01 μg/l 02/11/00 Harwood Well EPTC 525.2 ND 0.1 μg/l 02/11/00 Harwood Well Ethylene Dibromide (EDB) 504.1 ND 0.01 μg/l 02/11/00 Harwood Well Fluoranthene 525.2 ND 0.1 μg/l 02/11/00 Harwood Well Fluorene 525.2 ND 0.05 μg/l 02/11/00 Harwood Well gamma-Chlordane 525.2 ND 0.05 μg/l 02/11/00 Harwood Well Glyphosate 547 ND 6 μg/l 02/11/00 Harwood Well Heptachlor 525.2 ND 0.04 μg/l 02/11/00 Harwood Well Heptachlor 508 ND 0.01 μg/l 02/11/00 Harwood Well Heptachlor epoxide 508 ND 0.01 μg/l 02/11/00 Harwood Well Heptachlor Epoxide (isomer A 525.2 ND 0.02 μg/l 02/11/00 Harwood Well Heptachlor Epoxide (isomer B 525.2 ND 0.02 μg/l 02/11/00 Harwood Well Hexachlorobenzene 525.2 ND 0.05 μg/l 02/11/00 Harwood Well Hexachlorocyclopentadiene 525.2 ND 0.05 μg/l 02/11/00 Harwood Well Indeno(1,2,3,c,d)Pyrene 525.2 ND 0.05 μg/l 02/11/00 Harwood Well Isophorone 525.2 ND 0.5 μg/l 02/11/00 Harwood Well Lindane 525.2 ND 0.02 μg/l 02/11/00 Harwood Well Lindane (gamma-BHC) 508 ND 0.01 μg/l 02/11/00 Harwood Well Malathion 525.2 ND 0.1 μg/l 02/11/00 Harwood Well Methiocarb 531 ND 2 μg/l 02/11/00 Harwood Well Methomyl 531 ND 1 μg/l 02/11/00 Harwood Well Methoxychlor 525.2 ND 0.05 μg/l 02/11/00 Harwood Well Methoxychlor 508 ND 0.05 μg/l 02/11/00 Harwood Well Metolachlor 525.2 ND 0.05 μg/l 02/11/00 Harwood Well Metribuzin 525.2 ND 0.05 μg/l 02/11/00 Harwood Well Molinate (Ordram) 525.2 ND 0.2 μg/l 02/11/00 Harwood Well Naphthalene 525.2 ND 0.1 μg/l 02/11/00 Harwood Well Nitrobenzene 525.2 ND 5 μg/l 02/11/00 Harwood Well Oxamyl (Vydate) 531 ND 2 μg/l 02/11/00 Harwood Well p,p' DDD 508 ND 0.01 μg/l 02/11/00 Harwood Well p,p' DDE 508 ND 0.01 μg/l 02/11/00 Harwood Well p,p' DDT 508 ND 0.01 μg/l 02/11/00 Harwood Well Parathion 525.2 ND 0.1 μg/l 02/11/00 Harwood Well PCB 1016 Arochlor 508 ND 0.07 μg/l 02/11/00 Harwood Well PCB 1221 Arochlor 508 ND 0.1 μg/l 02/11/00 Harwood Well PCB 1232 Arochlor 508 ND 0.1 μg/l 02/11/00 Harwood Well PCB 1242 Arochlor 508 ND 0.1 μg/l 02/11/00 Harwood Well PCB 1248 Arochlor 508 ND 0.1 μg/l 02/11/00 Harwood Well PCB 1254 Arochlor 508 ND 0.1 μg/l 02/11/00 Harwood Well PCB 1260 Arochlor 508 ND 0.1 μg/l 02/11/00 Harwood Well Pentachlorophenol (PCP) 525.2 ND 1 μg/l 02/11/00 Harwood Well Pentachlorophenol (PCP) 515.1 ND 0.04 μg/l 02/11/00 Harwood Well Permethrin (mixed isomers) 525.2 ND 0.1 μg/l 02/11/00 Harwood Well Phenanthrene 525.2 ND 0.02 μg/l 02/11/00 Harwood Well Picloram 515.1 ND 0.1 μg/l 02/11/00 Harwood Well Prometryn (Caparol) 525.2 ND 0.5 μg/l 02/11/00 Harwood Well Propachlor 525.2 ND 0.05 μg/l 02/11/00 Harwood Well Pyrene 525.2 ND 0.05 μg/l 02/11/00 Harwood Well Simazine (Princep) 525.2 ND 0.05 μg/l 02/11/00 Harwood Well Terbacil 525.2 ND 0.1 μg/l 02/11/00 Harwood Well Thiobencarb (Bolero) 525.2 ND 0.2 μg/l 02/11/00 Harwood Well Toxaphene 508 ND 0.5 μg/l 02/11/00 Harwood Well trans-Nonachlor 525.2 ND 0.05 μg/l 02/11/00 Harwood Well Trifluralin 525.2 ND 0.1 μg/l 11/20/02 Harwood Well 2,4,5-T 515.3 ND 1 μg/l 11/20/02 Harwood Well 2,4,5-TP (Silvex) 515.3 ND 1 μg/l 11/20/02 Harwood Well 2,4-D 515.3 ND 10 μg/l 11/20/02 Harwood Well Alachlor (Alanex) 525.2 ND 1 μg/l 11/20/02 Harwood Well Aldicarb (TEMIK) 531 ND 3 μg/l 11/20/02 Harwood Well Aldicarb sulfone 531 ND 4 μg/l 11/20/02 Harwood Well Aldicarb sulfoxide 531 ND 3 μg/l 11/20/02 Harwood Well Aldrin 505 ND 0.075 μg/l 11/20/02 Harwood Well Atrazine (AAtrex) 525.2 ND 1 μg/l 11/20/02 Harwood Well Bentazon (Basagran) 515.3 ND 2 μg/l 11/20/02 Harwood Well Benzo(a)pyrene 525.2 ND 0.1 μg/l 11/20/02 Harwood Well Bis(2-Ethylhexyl)Adipate 525.2 ND 3 μg/l 11/20/02 Harwood Well Bis(2-Ethylhexyl)Phthalate 525.2 ND 3 μg/l 11/20/02 Harwood Well Bromacil (Hyvar) 525.2 ND 10 μg/l 11/20/02 Harwood Well Butachlor 525.2 ND 0.38 μg/l 11/20/02 Harwood Well Carbaryl (Sevin) 531 ND 5 μg/l 11/20/02 Harwood Well Carbofuran (FURADAN) 531 ND 5 μg/l 11/20/02 Harwood Well Chlordane 505 ND 0.1 μg/l 11/20/02 Harwood Well Chlorothalonil (Draconil, Brav 505 ND 5 μg/l 11/20/02 Harwood Well Dalapon 515.3 ND 10 μg/l 11/20/02 Harwood Well Diazinon 525.2 ND 0.25 μg/l 11/20/02 Harwood Well Dibromochloropropane (DBC 504.1 ND 0.01 μg/l 11/20/02 Harwood Well Dicamba (Banvel) 515.3 ND 1.5 μg/l 11/20/02 Harwood Well Dieldrin 505 ND 0.02 μg/l 11/20/02 Harwood Well Dimethoate (Cygon) 525.2 ND 10 μg/l 11/20/02 Harwood Well Dinoseb (DNBP) 515.3 ND 2 μg/l 11/20/02 Harwood Well Endrin 505 ND 0.1 μg/l 11/20/02 Harwood Well Ethylene Dibromide (EDB) 504.1 ND 0.02 μg/l 11/20/02 Harwood Well Glyphosate 547 ND 25 μg/l 11/20/02 Harwood Well Heptachlor 505 ND 0.01 μg/l 11/20/02 Harwood Well Heptachlor Epoxide 505 ND 0.01 μg/l 11/20/02 Harwood Well Hexachlorobenzene 505 ND 0.5 μg/l 11/20/02 Harwood Well Hexachlorocyclopentadiene 505 ND 1 μg/l 11/20/02 Harwood Well Lindane 505 ND 0.2 μg/l 11/20/02 Harwood Well Methomyl 531 ND 2 μg/l 11/20/02 Harwood Well Methoxychlor 505 ND 10 μg/l 11/20/02 Harwood Well Metolachlor 525.2 ND 0.5 μg/l 11/20/02 Harwood Well Metribuzin 525.2 ND 0.5 μg/l 11/20/02 Harwood Well Molinate (Ordram) 525.2 ND 2 μg/l 11/20/02 Harwood Well Oxamyl (Vydate) 531 ND 20 μg/l 11/20/02 Harwood Well PCB's 505 ND 0.2 μg/l 11/20/02 Harwood Well Pentachlorophenol (PCP) 515.3 ND 0.2 μg/l 11/20/02 Harwood Well Picloram 515.3 ND 1 μg/l 11/20/02 Harwood Well Prometryn (Caparol) 525.2 ND 2 μg/l 11/20/02 Harwood Well Propachlor 525.2 ND 0.5 μg/l 11/20/02 Harwood Well Simazine (Princep) 525.2 ND 1 μg/l 11/20/02 Harwood Well Thiobencarb (Bolero) 525.2 ND 1 μg/l 11/20/02 Harwood Well Toxaphene 505 ND 1 μg/l 11/20/02 Harwood Well Trifluralin 505 ND 1 μg/l 01/29/00 Low Flow Barrier 2,4,5-T 515.1 ND 0.2 μg/l 01/29/00 Low Flow Barrier 2,4,5-TP (Silvex) 515.1 ND 0.2 μg/l 01/29/00 Low Flow Barrier 2,4-D 515.1 ND 0.1 μg/l 01/29/00 Low Flow Barrier 2,4-DB 515.1 ND 2 μg/l 01/29/00 Low Flow Barrier 2,4-Dinitrotoluene 525.2 ND 0.1 μg/l 01/29/00 Low Flow Barrier 2,6-Dinitrotoluene 525.2 ND 0.1 μg/l 01/29/00 Low Flow Barrier 3,5-Dichlorobenzoic acid 515.1 ND 0.5 μg/l 01/29/00 Low Flow Barrier 3-Hydroxycarbofuran 531 ND 2 μg/l 01/29/00 Low Flow Barrier 4,4'-DDD 525.2 ND 0.1 μg/l 01/29/00 Low Flow Barrier 4,4'-DDE 525.2 ND 0.1 μg/l 01/29/00 Low Flow Barrier 4,4'-DDT 525.2 ND 0.1 μg/l 01/29/00 Low Flow Barrier 4-Nitrophenol 515.1 ND 5 μg/l 01/29/00 Low Flow Barrier Acenaphthene 525.2 ND 0.1 μg/l 01/29/00 Low Flow Barrier Acenaphthylene 525.2 ND 0.1 μg/l 01/29/00 Low Flow Barrier Acetochlor 525.2 ND 0.1 μg/l 01/29/00 Low Flow Barrier Acifluorfen 515.1 ND 0.2 μg/l 01/29/00 Low Flow Barrier Alachlor (Alanex) 525.2 ND 0.05 μg/l 01/29/00 Low Flow Barrier Alachlor (Alanex) 508 ND 0.05 μg/l 01/29/00 Low Flow Barrier Aldicarb (TEMIK) 531 ND 0.5 μg/l 01/29/00 Low Flow Barrier Aldicarb sulfone 531 ND 0.7 μg/l 01/29/00 Low Flow Barrier Aldicarb sulfoxide 531 ND 0.5 μg/l 01/29/00 Low Flow Barrier Aldrin 525.2 ND 0.05 μg/l 01/29/00 Low Flow Barrier Aldrin 508 ND 0.01 μg/l 01/29/00 Low Flow Barrier Alpha-BHC 508 ND 0.01 μg/l 01/29/00 Low Flow Barrier Anthracene 525.2 ND 0.02 μg/l 01/29/00 Low Flow Barrier Atrazine (AAtrex) 525.2 ND 0.05 μg/l 01/29/00 Low Flow Barrier Baygon 531 ND 2 μg/l 01/29/00 Low Flow Barrier Bentazon (Basagran) 515.1 ND 0.5 μg/l 01/29/00 Low Flow Barrier Benz(a)Anthracene 525.2 ND 0.05 μg/l 01/29/00 Low Flow Barrier Benzo(a)pyrene 525.2 ND 0.02 μg/l 01/29/00 Low Flow Barrier Benzo(b)Fluoranthene 525.2 ND 0.02 μg/l 01/29/00 Low Flow Barrier Benzo(g,h,i)Perylene 525.2 ND 0.05 μg/l 01/29/00 Low Flow Barrier Benzo(k)Fluoranthene 525.2 ND 0.02 μg/l 01/29/00 Low Flow Barrier Beta-BHC 508 ND 0.01 μg/l 01/29/00 Low Flow Barrier Bromacil (Hyvar) 525.2 ND 0.2 μg/l 01/29/00 Low Flow Barrier Butachlor 525.2 ND 0.05 μg/l 01/29/00 Low Flow Barrier Butylbenzylphthalate 525.2 ND 0.5 μg/l 01/29/00 Low Flow Barrier Caffeine 525.2 ND 0.02 μg/l 01/29/00 Low Flow Barrier Carbaryl (Sevin) 531 ND 2 μg/l 01/29/00 Low Flow Barrier Carbofuran (FURADAN) 531 ND 0.9 μg/l 01/29/00 Low Flow Barrier Chlopyrifos (Dursban) 525.2 ND 0.05 μg/l 01/29/00 Low Flow Barrier Chlordane 525.2 ND 0.05 μg/l 01/29/00 Low Flow Barrier Chlordane 508 ND 0.1 μg/l 01/29/00 Low Flow Barrier Chlorobenzilate 525.2 ND 0.1 μg/l 01/29/00 Low Flow Barrier Chloroneb 525.2 ND 0.1 μg/l 01/29/00 Low Flow Barrier Chlorothalonil (Draconil, Brav 508 ND 0.01 μg/l 01/29/00 Low Flow Barrier Chrysene 525.2 ND 0.02 μg/l 01/29/00 Low Flow Barrier Dalapon 515.1 ND 1 μg/l 01/29/00 Low Flow Barrier DCPA 515.1 ND 0.1 μg/l 01/29/00 Low Flow Barrier Delta-BHC 508 ND 0.01 μg/l 01/29/00 Low Flow Barrier Di(2-Ethylhexyl)adipate 525.2 ND 0.6 μg/l 01/29/00 Low Flow Barrier Di(2-Ethylhexyl)phthalate 525.2 ND 0.6 μg/l 01/29/00 Low Flow Barrier Diazinon 525.2 ND 0.1 μg/l 01/29/00 Low Flow Barrier Dibenz(a,h)Anthracene 525.2 ND 0.05 μg/l 01/29/00 Low Flow Barrier Dibromochloropropane (DBC 504.1 ND 0.01 μg/l 01/29/00 Low Flow Barrier Dicamba (Banvel) 515.1 ND 0.08 μg/l 01/29/00 Low Flow Barrier Dichlorprop 515.1 ND 0.5 μg/l 01/29/00 Low Flow Barrier Dichlorvos (DDVP) 525.2 ND 0.05 μg/l 01/29/00 Low Flow Barrier Dieldrin 525.2 ND 0.2 μg/l 01/29/00 Low Flow Barrier Dieldrin 508 ND 0.01 μg/l 01/29/00 Low Flow Barrier Diethyl Phthalate 525.2 0.500 0.5 μg/l 01/29/00 Low Flow Barrier Dimethoate (Cygon) 525.2 ND 10 μg/l 01/29/00 Low Flow Barrier Dimethyl Phthalate 525.2 ND 0.5 μg/l 01/29/00 Low Flow Barrier Di-n-Butyl Phthalate 525.2 ND 0.5 μg/l 01/29/00 Low Flow Barrier Di-n-Octyl Phthalate 525.2 ND 0.1 μg/l 01/29/00 Low Flow Barrier Dinoseb (DNBP) 515.1 ND 0.2 μg/l 01/29/00 Low Flow Barrier Endosulfan I (alpha) 508 ND 0.01 μg/l 01/29/00 Low Flow Barrier Endosulfan II (beta) 508 ND 0.01 μg/l 01/29/00 Low Flow Barrier Endosulfan sulfate 508 ND 0.01 μg/l 01/29/00 Low Flow Barrier Endrin 525.2 ND 0.1 μg/l 01/29/00 Low Flow Barrier Endrin 508 ND 0.01 μg/l 01/29/00 Low Flow Barrier Endrin Aldehyde 508 ND 0.01 μg/l 01/29/00 Low Flow Barrier EPTC 525.2 ND 0.1 μg/l 01/29/00 Low Flow Barrier Ethylene Dibromide (EDB) 504.1 ND 0.01 μg/l 01/29/00 Low Flow Barrier Fluoranthene 525.2 ND 0.1 μg/l 01/29/00 Low Flow Barrier Fluorene 525.2 ND 0.05 μg/l 01/29/00 Low Flow Barrier gamma-Chlordane 525.2 ND 0.05 μg/l 01/29/00 Low Flow Barrier Glyphosate 547 ND 6 μg/l 01/29/00 Low Flow Barrier Heptachlor 525.2 ND 0.04 μg/l 01/29/00 Low Flow Barrier Heptachlor 508 ND 0.01 μg/l 01/29/00 Low Flow Barrier Heptachlor epoxide 508 ND 0.01 μg/l 01/29/00 Low Flow Barrier Heptachlor Epoxide (isomer A 525.2 ND 0.02 μg/l 01/29/00 Low Flow Barrier Heptachlor Epoxide (isomer B 525.2 ND 0.02 μg/l 01/29/00 Low Flow Barrier Hexachlorobenzene 525.2 ND 0.05 μg/l 01/29/00 Low Flow Barrier Hexachlorocyclopentadiene 525.2 ND 0.05 μg/l 01/29/00 Low Flow Barrier Indeno(1,2,3,c,d)Pyrene 525.2 ND 0.05 μg/l 01/29/00 Low Flow Barrier Isophorone 525.2 ND 0.5 μg/l 01/29/00 Low Flow Barrier Lindane 525.2 ND 0.02 μg/l 01/29/00 Low Flow Barrier Lindane (gamma-BHC) 508 ND 0.01 μg/l 01/29/00 Low Flow Barrier Malathion 525.2 ND 0.1 μg/l 01/29/00 Low Flow Barrier Methiocarb 531 ND 2 μg/l 01/29/00 Low Flow Barrier Methomyl 531 ND 1 μg/l 01/29/00 Low Flow Barrier Methoxychlor 525.2 ND 0.05 μg/l 01/29/00 Low Flow Barrier Methoxychlor 508 ND 0.05 μg/l 01/29/00 Low Flow Barrier Metolachlor 525.2 ND 0.05 μg/l 01/29/00 Low Flow Barrier Metribuzin 525.2 ND 0.05 μg/l 01/29/00 Low Flow Barrier Molinate (Ordram) 525.2 ND 0.2 μg/l 01/29/00 Low Flow Barrier Naphthalene 525.2 ND 0.1 μg/l 01/29/00 Low Flow Barrier Nitrobenzene 525.2 ND 5 μg/l 01/29/00 Low Flow Barrier Oxamyl (Vydate) 531 ND 2 μg/l 01/29/00 Low Flow Barrier p,p' DDD 508 ND 0.01 μg/l 01/29/00 Low Flow Barrier p,p' DDE 508 ND 0.01 μg/l 01/29/00 Low Flow Barrier p,p' DDT 508 ND 0.01 μg/l 01/29/00 Low Flow Barrier Parathion 525.2 ND 0.1 μg/l 01/29/00 Low Flow Barrier PCB 1016 Arochlor 508 ND 0.07 μg/l 01/29/00 Low Flow Barrier PCB 1221 Arochlor 508 ND 0.1 μg/l 01/29/00 Low Flow Barrier PCB 1232 Arochlor 508 ND 0.1 μg/l 01/29/00 Low Flow Barrier PCB 1242 Arochlor 508 ND 0.1 μg/l 01/29/00 Low Flow Barrier PCB 1248 Arochlor 508 ND 0.1 μg/l 01/29/00 Low Flow Barrier PCB 1254 Arochlor 508 ND 0.1 μg/l 01/29/00 Low Flow Barrier PCB 1260 Arochlor 508 ND 0.1 μg/l 01/29/00 Low Flow Barrier Pentachlorophenol (PCP) 525.2 ND 1 μg/l 01/29/00 Low Flow Barrier Pentachlorophenol (PCP) 515.1 ND 0.04 μg/l 01/29/00 Low Flow Barrier Permethrin (mixed isomers) 525.2 ND 0.1 μg/l 01/29/00 Low Flow Barrier Phenanthrene 525.2 ND 0.02 μg/l 01/29/00 Low Flow Barrier Picloram 515.1 ND 0.1 μg/l 01/29/00 Low Flow Barrier Prometryn (Caparol) 525.2 ND 0.5 μg/l 01/29/00 Low Flow Barrier Propachlor 525.2 ND 0.05 μg/l 01/29/00 Low Flow Barrier Pyrene 525.2 ND 0.05 μg/l 01/29/00 Low Flow Barrier Simazine (Princep) 525.2 ND 0.05 μg/l 01/29/00 Low Flow Barrier Terbacil 525.2 ND 0.1 μg/l 01/29/00 Low Flow Barrier Thiobencarb (Bolero) 525.2 ND 0.2 μg/l 01/29/00 Low Flow Barrier Toxaphene 508 ND 0.5 μg/l 01/29/00 Low Flow Barrier trans-Nonachlor 525.2 ND 0.05 μg/l 01/29/00 Low Flow Barrier Trifluralin 525.2 ND 0.1 μg/l 12/11/02 Oakglen Well TPH 1664 ND 5000 μg/l 01/28/00 Singing Hills Golf Course (Well west of) 2,4,5-T 515.1 ND 0.2 μg/l 01/28/00 Singing Hills Golf Course (Well west of) 2,4,5-TP (Silvex) 515.1 ND 0.2 μg/l 01/28/00 Singing Hills Golf Course (Well west of) 2,4-D 515.1 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) 2,4-DB 515.1 ND 2 μg/l 01/28/00 Singing Hills Golf Course (Well west of) 2,4-Dinitrotoluene 525.2 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) 2,6-Dinitrotoluene 525.2 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) 3,5-Dichlorobenzoic acid 515.1 ND 0.5 μg/l 01/28/00 Singing Hills Golf Course (Well west of) 3-Hydroxycarbofuran 531 ND 2 μg/l 01/28/00 Singing Hills Golf Course (Well west of) 4,4'-DDD 525.2 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) 4,4'-DDE 525.2 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) 4,4'-DDT 525.2 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) 4-Nitrophenol 515.1 ND 5 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Acenaphthene 525.2 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Acenaphthylene 525.2 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Acetochlor 525.2 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Acifluorfen 515.1 ND 0.2 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Alachlor (Alanex) 525.2 ND 0.05 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Alachlor (Alanex) 508 ND 0.05 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Aldicarb (TEMIK) 531 ND 0.5 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Aldicarb sulfone 531 ND 0.7 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Aldicarb sulfoxide 531 ND 0.5 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Aldrin 525.2 ND 0.05 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Aldrin 508 ND 0.01 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Alpha-BHC 508 ND 0.01 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Anthracene 525.2 ND 0.02 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Atrazine (AAtrex) 525.2 ND 0.05 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Baygon 531 ND 2 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Bentazon (Basagran) 515.1 ND 0.5 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Benz(a)Anthracene 525.2 ND 0.05 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Benzo(a)pyrene 525.2 ND 0.02 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Benzo(b)Fluoranthene 525.2 ND 0.02 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Benzo(g,h,i)Perylene 525.2 ND 0.05 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Benzo(k)Fluoranthene 525.2 ND 0.02 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Beta-BHC 508 ND 0.01 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Bromacil (Hyvar) 525.2 ND 0.2 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Butachlor 525.2 ND 0.05 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Butylbenzylphthalate 525.2 ND 0.5 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Caffeine 525.2 ND 0.02 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Carbaryl (Sevin) 531 ND 2 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Carbofuran (FURADAN) 531 ND 0.9 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Chlopyrifos (Dursban) 525.2 ND 0.05 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Chlordane 525.2 ND 0.05 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Chlordane 508 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Chlorobenzilate 525.2 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Chloroneb 525.2 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Chlorothalonil (Draconil, Brav 508 ND 0.01 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Chrysene 525.2 ND 0.02 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Dalapon 515.1 ND 1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) DCPA 515.1 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Delta-BHC 508 ND 0.01 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Di(2-Ethylhexyl)adipate 525.2 ND 0.6 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Di(2-Ethylhexyl)phthalate 525.2 1.200 0.6 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Diazinon 525.2 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Dibenz(a,h)Anthracene 525.2 ND 0.05 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Dibromochloropropane (DBC 504.1 ND 0.01 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Dicamba (Banvel) 515.1 ND 0.08 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Dichlorprop 515.1 ND 0.5 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Dichlorvos (DDVP) 525.2 ND 0.05 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Dieldrin 525.2 ND 0.2 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Dieldrin 508 ND 0.01 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Diethyl Phthalate 525.2 0.700 0.5 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Dimethoate (Cygon) 525.2 ND 10 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Dimethyl Phthalate 525.2 ND 0.5 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Di-n-Butyl Phthalate 525.2 ND 0.5 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Di-n-Octyl Phthalate 525.2 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Dinoseb (DNBP) 515.1 ND 0.2 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Endosulfan I (alpha) 508 ND 0.01 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Endosulfan II (beta) 508 0.020 0.01 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Endosulfan sulfate 508 ND 0.01 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Endrin 525.2 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Endrin 508 ND 0.01 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Endrin Aldehyde 508 ND 0.01 μg/l 01/28/00 Singing Hills Golf Course (Well west of) EPTC 525.2 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Ethylene Dibromide (EDB) 504.1 ND 0.01 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Fluoranthene 525.2 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Fluorene 525.2 ND 0.05 μg/l 01/28/00 Singing Hills Golf Course (Well west of) gamma-Chlordane 525.2 ND 0.05 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Glyphosate 547 ND 6 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Heptachlor 525.2 ND 0.04 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Heptachlor 508 ND 0.01 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Heptachlor epoxide 508 ND 0.01 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Heptachlor Epoxide (isomer A 525.2 ND 0.02 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Heptachlor Epoxide (isomer B 525.2 0.040 0.02 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Hexachlorobenzene 525.2 ND 0.05 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Hexachlorocyclopentadiene 525.2 ND 0.05 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Indeno(1,2,3,c,d)Pyrene 525.2 ND 0.05 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Isophorone 525.2 ND 0.5 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Lindane 525.2 ND 0.02 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Lindane (gamma-BHC) 508 ND 0.01 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Malathion 525.2 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Methiocarb 531 ND 2 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Methomyl 531 ND 1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Methoxychlor 525.2 ND 0.05 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Methoxychlor 508 ND 0.05 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Metolachlor 525.2 ND 0.05 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Metribuzin 525.2 ND 0.05 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Molinate (Ordram) 525.2 ND 0.2 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Naphthalene 525.2 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Nitrobenzene 525.2 ND 5 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Oxamyl (Vydate) 531 ND 2 μg/l 01/28/00 Singing Hills Golf Course (Well west of) p,p' DDD 508 ND 0.01 μg/l 01/28/00 Singing Hills Golf Course (Well west of) p,p' DDE 508 ND 0.01 μg/l 01/28/00 Singing Hills Golf Course (Well west of) p,p' DDT 508 ND 0.01 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Parathion 525.2 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) PCB 1016 Arochlor 508 ND 0.07 μg/l 01/28/00 Singing Hills Golf Course (Well west of) PCB 1221 Arochlor 508 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) PCB 1232 Arochlor 508 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) PCB 1242 Arochlor 508 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) PCB 1248 Arochlor 508 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) PCB 1254 Arochlor 508 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) PCB 1260 Arochlor 508 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Pentachlorophenol (PCP) 525.2 ND 1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Pentachlorophenol (PCP) 515.1 ND 0.04 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Permethrin (mixed isomers) 525.2 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Phenanthrene 525.2 ND 0.02 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Picloram 515.1 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Prometryn (Caparol) 525.2 ND 0.5 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Propachlor 525.2 ND 0.05 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Pyrene 525.2 ND 0.05 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Simazine (Princep) 525.2 ND 0.05 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Terbacil 525.2 ND 0.1 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Thiobencarb (Bolero) 525.2 ND 0.2 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Toxaphene 508 ND 0.5 μg/l 01/28/00 Singing Hills Golf Course (Well west of) trans-Nonachlor 525.2 ND 0.05 μg/l 01/28/00 Singing Hills Golf Course (Well west of) Trifluralin 525.2 ND 0.1 μg/l 01/23/96 Sweetwater Lake Alachlor (Alanex) 507 ND 1 μg/l 01/23/96 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.2 μg/l 01/23/96 Sweetwater Lake Bromacil (Hyvar) 507 ND 2.2 μg/l 01/23/96 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 01/23/96 Sweetwater Lake Diazinon 507 ND 0.1 μg/l 01/23/96 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 01/23/96 Sweetwater Lake Glyphosate 547 ND 6 μg/l 01/23/96 Sweetwater Lake Simazine (Princep) 507 ND 1 μg/l 01/23/96 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 04/23/96 Sweetwater Lake Glyphosate 547 ND 6 μg/l 04/24/96 Sweetwater Lake Alachlor (Alanex) 507 ND 1 μg/l 04/24/96 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.2 μg/l 04/24/96 Sweetwater Lake Bromacil (Hyvar) 507 ND 2.2 μg/l 04/24/96 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 04/24/96 Sweetwater Lake Diazinon 507 ND 0.1 μg/l 04/24/96 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 04/24/96 Sweetwater Lake Molinate (Ordram) 507 ND 0.4 μg/l 04/24/96 Sweetwater Lake Prometryn (Caparol) 507 ND 0.5 μg/l 04/24/96 Sweetwater Lake Simazine (Princep) 507 0.210 0.07 μg/l 04/24/96 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 07/09/96 Sweetwater Lake Alachlor (Alanex) 507 ND 0.1 μg/l 07/09/96 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.1 μg/l 07/09/96 Sweetwater Lake Bromacil (Hyvar) 507 ND 2.2 μg/l 07/09/96 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 07/09/96 Sweetwater Lake Diazinon 507 ND 0.1 μg/l 07/09/96 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 07/09/96 Sweetwater Lake Glyphosate 547 ND 6 μg/l 07/09/96 Sweetwater Lake Molinate (Ordram) 507 ND 0.4 μg/l 07/09/96 Sweetwater Lake Prometryn (Caparol) 507 ND 0.5 μg/l 07/09/96 Sweetwater Lake Simazine (Princep) 507 0.100 0.07 μg/l 07/09/96 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 10/21/96 Sweetwater Lake Alachlor (Alanex) 507 ND 0.1 μg/l 10/21/96 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.1 μg/l 10/21/96 Sweetwater Lake Bromacil (Hyvar) 507 ND 2.2 μg/l 10/21/96 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 10/21/96 Sweetwater Lake Diazinon 507 ND 0.1 μg/l 10/21/96 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 10/21/96 Sweetwater Lake Glyphosate 547 ND 6 μg/l 10/21/96 Sweetwater Lake Molinate (Ordram) 507 ND 0.4 μg/l 10/21/96 Sweetwater Lake Prometryn (Caparol) 507 ND 0.5 μg/l 10/21/96 Sweetwater Lake Simazine (Princep) 507 0.240 0.07 μg/l 10/21/96 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 01/22/97 Sweetwater Lake Alachlor (Alanex) 507 ND 0.1 μg/l 01/22/97 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.1 μg/l 01/22/97 Sweetwater Lake Bromacil (Hyvar) 507 ND 2.2 μg/l 01/22/97 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 01/22/97 Sweetwater Lake Diazinon 507 ND 0.1 μg/l 01/22/97 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 01/22/97 Sweetwater Lake Glyphosate 547 ND 6 μg/l 01/22/97 Sweetwater Lake Molinate (Ordram) 507 ND 0.4 μg/l 01/22/97 Sweetwater Lake Prometryn (Caparol) 507 ND 0.5 μg/l 01/22/97 Sweetwater Lake Simazine (Princep) 507 0.170 0.07 μg/l 01/22/97 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 03/24/97 Sweetwater Lake Alachlor (Alanex) 507 ND 0.2 μg/l 03/24/97 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.1 μg/l 03/24/97 Sweetwater Lake Bromacil (Hyvar) 507 ND 2.2 μg/l 03/24/97 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 03/24/97 Sweetwater Lake Diazinon 507 ND 0.1 μg/l 03/24/97 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 03/24/97 Sweetwater Lake Diuron 632 ND 1 μg/l 03/24/97 Sweetwater Lake Glyphosate 547 ND 6 μg/l 03/24/97 Sweetwater Lake Molinate (Ordram) 507 ND 0.4 μg/l 03/24/97 Sweetwater Lake Prometryn (Caparol) 507 ND 0.5 μg/l 03/24/97 Sweetwater Lake Simazine (Princep) 507 0.120 0.07 μg/l 03/24/97 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 07/24/97 Sweetwater Lake Alachlor (Alanex) 507 ND 0.2 μg/l 07/24/97 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.1 μg/l 07/24/97 Sweetwater Lake Bromacil (Hyvar) 507 ND 2.2 μg/l 07/24/97 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 07/24/97 Sweetwater Lake Diazinon 507 ND 0.1 μg/l 07/24/97 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 07/24/97 Sweetwater Lake Glyphosate 547 ND 6 μg/l 07/24/97 Sweetwater Lake Molinate (Ordram) 507 ND 0.4 μg/l 07/24/97 Sweetwater Lake Prometryn (Caparol) 507 ND 0.5 μg/l 07/24/97 Sweetwater Lake Simazine (Princep) 507 0.090 0.07 μg/l 07/24/97 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 11/19/97 Sweetwater Lake Alachlor (Alanex) 507 ND 0.1 μg/l 11/19/97 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.1 μg/l 11/19/97 Sweetwater Lake Bromacil (Hyvar) 507 ND 2.2 μg/l 11/19/97 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 11/19/97 Sweetwater Lake Diazinon 507 ND 0.1 μg/l 11/19/97 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 11/19/97 Sweetwater Lake Glyphosate 547 ND 6 μg/l 11/19/97 Sweetwater Lake Molinate (Ordram) 507 ND 0.4 μg/l 11/19/97 Sweetwater Lake Prometryn (Caparol) 507 ND 0.5 μg/l 11/19/97 Sweetwater Lake Simazine (Princep) 507 ND 0.07 μg/l 11/19/97 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 02/06/98 Sweetwater Lake Alachlor (Alanex) 507 ND 0.1 μg/l 02/06/98 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.1 μg/l 02/06/98 Sweetwater Lake Bromacil (Hyvar) 507 ND 2.2 μg/l 02/06/98 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 02/06/98 Sweetwater Lake Diazinon 507 ND 0.1 μg/l 02/06/98 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 02/06/98 Sweetwater Lake Molinate (Ordram) 507 ND 0.4 μg/l 02/06/98 Sweetwater Lake Prometryn (Caparol) 507 ND 0.5 μg/l 02/06/98 Sweetwater Lake Simazine (Princep) 507 0.070 0.07 μg/l 02/06/98 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 04/03/98 Sweetwater Lake Alachlor (Alanex) 507 ND 0.2 μg/l 04/03/98 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.1 μg/l 04/03/98 Sweetwater Lake Bromacil (Hyvar) 507 ND 2.2 μg/l 04/03/98 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 04/03/98 Sweetwater Lake Diazinon 507 ND 0.1 μg/l 04/03/98 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 04/03/98 Sweetwater Lake Molinate (Ordram) 507 ND 0.4 μg/l 04/03/98 Sweetwater Lake Prometryn (Caparol) 507 ND 0.5 μg/l 04/03/98 Sweetwater Lake Simazine (Princep) 507 ND 0.07 μg/l 04/03/98 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 08/04/98 Sweetwater Lake Alachlor (Alanex) 507 ND 0.2 μg/l 08/04/98 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.1 μg/l 08/04/98 Sweetwater Lake Bromacil (Hyvar) 507 ND 2.2 μg/l 08/04/98 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 08/04/98 Sweetwater Lake Diazinon 507 ND 0.1 μg/l 08/04/98 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 08/04/98 Sweetwater Lake Glyphosate 547 ND 6 μg/l 08/04/98 Sweetwater Lake Molinate (Ordram) 507 ND 0.4 μg/l 08/04/98 Sweetwater Lake Prometryn (Caparol) 507 ND 0.5 μg/l 08/04/98 Sweetwater Lake Simazine (Princep) 507 ND 0.07 μg/l 08/04/98 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 09/17/98 Sweetwater Lake Alachlor (Alanex) 507 ND 0.2 μg/l 09/17/98 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.1 μg/l 09/17/98 Sweetwater Lake Bromacil (Hyvar) 507 ND 2.2 μg/l 09/17/98 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 09/17/98 Sweetwater Lake Diazinon 507 ND 0.1 μg/l 09/17/98 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 09/17/98 Sweetwater Lake Molinate (Ordram) 507 ND 0.4 μg/l 09/17/98 Sweetwater Lake Prometryn (Caparol) 507 ND 0.5 μg/l 09/17/98 Sweetwater Lake Simazine (Princep) 507 ND 0.07 μg/l 09/17/98 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 10/15/98 Sweetwater Lake Glyphosate 547 ND 6 μg/l 12/09/98 Sweetwater Lake Alachlor (Alanex) 507 ND 0.2 μg/l 12/09/98 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.1 μg/l 12/09/98 Sweetwater Lake Bromacil (Hyvar) 507 ND 2.2 μg/l 12/09/98 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 12/09/98 Sweetwater Lake Diazinon 507 ND 0.1 μg/l 12/09/98 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 12/09/98 Sweetwater Lake Molinate (Ordram) 507 ND 0.4 μg/l 12/09/98 Sweetwater Lake Prometryn (Caparol) 507 ND 0.5 μg/l 12/09/98 Sweetwater Lake Simazine (Princep) 507 ND 0.07 μg/l 12/09/98 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 01/12/99 Sweetwater Lake Alachlor (Alanex) 507 ND 0.2 μg/l 01/12/99 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.1 μg/l 01/12/99 Sweetwater Lake Bromacil (Hyvar) 507 ND 2.2 μg/l 01/12/99 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 01/12/99 Sweetwater Lake Diazinon 507 ND 0.1 μg/l 01/12/99 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 01/12/99 Sweetwater Lake Glyphosate 547 ND 6 μg/l 01/12/99 Sweetwater Lake Molinate (Ordram) 507 ND 0.4 μg/l 01/12/99 Sweetwater Lake Prometryn (Caparol) 507 ND 0.5 μg/l 01/12/99 Sweetwater Lake Simazine (Princep) 507 ND 0.07 μg/l 01/12/99 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 04/14/99 Sweetwater Lake Alachlor (Alanex) 507 ND 0.2 μg/l 04/14/99 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.1 μg/l 04/14/99 Sweetwater Lake Bromacil (Hyvar) 507 ND 2.2 μg/l 04/14/99 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 04/14/99 Sweetwater Lake Diazinon 507 ND 0.1 μg/l 04/14/99 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 04/14/99 Sweetwater Lake Glyphosate 547 ND 6 μg/l 04/14/99 Sweetwater Lake Molinate (Ordram) 507 ND 0.4 μg/l 04/14/99 Sweetwater Lake Prometryn (Caparol) 507 ND 0.5 μg/l 04/14/99 Sweetwater Lake Simazine (Princep) 507 ND 0.07 μg/l 04/14/99 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 07/28/99 Sweetwater Lake Alachlor (Alanex) 507 ND 0.2 μg/l 07/28/99 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.1 μg/l 07/28/99 Sweetwater Lake Bromacil (Hyvar) 507 ND 2.2 μg/l 07/28/99 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 07/28/99 Sweetwater Lake Diazinon 507 ND 0.1 μg/l 07/28/99 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 07/28/99 Sweetwater Lake Glyphosate 547 ND 6 μg/l 07/28/99 Sweetwater Lake Molinate (Ordram) 507 ND 0.4 μg/l 07/28/99 Sweetwater Lake Prometryn (Caparol) 507 ND 0.5 μg/l 07/28/99 Sweetwater Lake Simazine (Princep) 507 ND 0.07 μg/l 07/28/99 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 10/21/99 Sweetwater Lake Alachlor (Alanex) 507 ND 0.2 μg/l 10/21/99 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.1 μg/l 10/21/99 Sweetwater Lake Bromacil (Hyvar) 507 ND 2.2 μg/l 10/21/99 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 10/21/99 Sweetwater Lake Diazinon 507 ND 0.1 μg/l 10/21/99 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 10/21/99 Sweetwater Lake Glyphosate 547 ND 6 μg/l 10/21/99 Sweetwater Lake Molinate (Ordram) 507 ND 0.4 μg/l 10/21/99 Sweetwater Lake Prometryn (Caparol) 507 ND 0.5 μg/l 10/21/99 Sweetwater Lake Simazine (Princep) 507 ND 0.07 μg/l 10/21/99 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 01/11/00 Sweetwater Lake Alachlor (Alanex) 507 ND 0.2 μg/l 01/11/00 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.1 μg/l 01/11/00 Sweetwater Lake Bromacil (Hyvar) 507 ND 2.2 μg/l 01/11/00 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 01/11/00 Sweetwater Lake Diazinon 507 ND 0.1 μg/l 01/11/00 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 01/11/00 Sweetwater Lake Glyphosate 547 ND 6 μg/l 01/11/00 Sweetwater Lake Molinate (Ordram) 507 ND 0.4 μg/l 01/11/00 Sweetwater Lake Prometryn (Caparol) 507 ND 0.5 μg/l 01/11/00 Sweetwater Lake Simazine (Princep) 507 ND 0.07 μg/l 01/11/00 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 04/12/00 Sweetwater Lake Alachlor (Alanex) 507 ND 0.2 μg/l 04/12/00 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.1 μg/l 04/12/00 Sweetwater Lake Bromacil (Hyvar) 507 ND 2.2 μg/l 04/12/00 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 04/12/00 Sweetwater Lake Diazinon 507 ND 0.1 μg/l 04/12/00 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 04/12/00 Sweetwater Lake Glyphosate 547 ND 6 μg/l 04/12/00 Sweetwater Lake Molinate (Ordram) 507 ND 0.4 μg/l 04/12/00 Sweetwater Lake Prometryn (Caparol) 507 ND 0.5 μg/l 04/12/00 Sweetwater Lake Simazine (Princep) 507 ND 0.07 μg/l 04/12/00 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 07/11/00 Sweetwater Lake Alachlor (Alanex) 507 ND 0.2 μg/l 07/11/00 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.1 μg/l 07/11/00 Sweetwater Lake Bromacil (Hyvar) 507 ND 2.2 μg/l 07/11/00 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 07/11/00 Sweetwater Lake Diazinon 507 ND 0.1 μg/l 07/11/00 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 07/11/00 Sweetwater Lake Glyphosate 547 ND 6 μg/l 07/11/00 Sweetwater Lake Molinate (Ordram) 507 ND 0.4 μg/l 07/11/00 Sweetwater Lake Prometryn (Caparol) 507 ND 0.5 μg/l 07/11/00 Sweetwater Lake Simazine (Princep) 507 ND 0.07 μg/l 07/11/00 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 10/11/00 Sweetwater Lake Alachlor (Alanex) 507 ND 0.2 μg/l 10/11/00 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.1 μg/l 10/11/00 Sweetwater Lake Bromacil (Hyvar) 507 ND 2.2 μg/l 10/11/00 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 10/11/00 Sweetwater Lake Diazinon 507 ND 0.1 μg/l 10/11/00 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 10/11/00 Sweetwater Lake Glyphosate 547 ND 6 μg/l 10/11/00 Sweetwater Lake Molinate (Ordram) 507 ND 0.4 μg/l 10/11/00 Sweetwater Lake Prometryn (Caparol) 507 ND 0.5 μg/l 10/11/00 Sweetwater Lake Simazine (Princep) 507 ND 0.07 μg/l 10/11/00 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 01/09/01 Sweetwater Lake Alachlor (Alanex) 507 ND 0.2 μg/l 01/09/01 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.1 μg/l 01/09/01 Sweetwater Lake Bromacil (Hyvar) 507 ND 2.2 μg/l 01/09/01 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 01/09/01 Sweetwater Lake Diazinon 507 ND 0.1 μg/l 01/09/01 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 01/09/01 Sweetwater Lake Glyphosate 547 ND 6 μg/l 01/09/01 Sweetwater Lake Molinate (Ordram) 507 ND 0.4 μg/l 01/09/01 Sweetwater Lake Prometryn (Caparol) 507 ND 0.5 μg/l 01/09/01 Sweetwater Lake Simazine (Princep) 507 ND 0.07 μg/l 01/09/01 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 04/10/01 Sweetwater Lake Alachlor (Alanex) 507 ND 0.2 μg/l 04/10/01 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.1 μg/l 04/10/01 Sweetwater Lake Bromacil (Hyvar) 507 ND 2.2 μg/l 04/10/01 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 04/10/01 Sweetwater Lake Diazinon 507 ND 0.1 μg/l 04/10/01 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 04/10/01 Sweetwater Lake Glyphosate 547 ND 6 μg/l 04/10/01 Sweetwater Lake Molinate (Ordram) 507 ND 0.4 μg/l 04/10/01 Sweetwater Lake Prometryn (Caparol) 507 ND 0.5 μg/l 04/10/01 Sweetwater Lake Simazine (Princep) 507 ND 0.07 μg/l 04/10/01 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 07/10/01 Sweetwater Lake Alachlor (Alanex) 507 ND 0.2 μg/l 07/10/01 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.1 μg/l 07/10/01 Sweetwater Lake Bromacil (Hyvar) 507 ND 2.2 μg/l 07/10/01 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 07/10/01 Sweetwater Lake Diazinon 507 ND 0.1 μg/l 07/10/01 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 07/10/01 Sweetwater Lake Glyphosate 547 ND 6 μg/l 07/10/01 Sweetwater Lake Molinate (Ordram) 507 ND 0.4 μg/l 07/10/01 Sweetwater Lake Prometryn (Caparol) 507 ND 0.5 μg/l 07/10/01 Sweetwater Lake Simazine (Princep) 507 ND 0.07 μg/l 07/10/01 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 09/19/01 Sweetwater Lake 2,4-Dinitrotoluene 525.2 ND 0.1 μg/l 09/19/01 Sweetwater Lake Acenaphthylene 525.2 ND 0.1 μg/l 09/19/01 Sweetwater Lake Alachlor (Alanex) 525.2 ND 0.05 μg/l 09/19/01 Sweetwater Lake Aldrin 525.2 ND 0.05 μg/l 09/19/01 Sweetwater Lake Anthracene 525.2 ND 0.02 μg/l 09/19/01 Sweetwater Lake Atrazine (AAtrex) 525.2 ND 0.05 μg/l 09/19/01 Sweetwater Lake Benz(a)Anthracene 525.2 ND 0.05 μg/l 09/19/01 Sweetwater Lake Benzo(a)pyrene 525.2 ND 0.02 μg/l 09/19/01 Sweetwater Lake Benzo(b)Fluoranthene 525.2 ND 0.02 μg/l 09/19/01 Sweetwater Lake Benzo(g,h,i)Perylene 525.2 ND 0.05 μg/l 09/19/01 Sweetwater Lake Benzo(k)Fluoranthene 525.2 ND 0.02 μg/l 09/19/01 Sweetwater Lake Bromacil (Hyvar) 525.2 ND 0.2 μg/l 09/19/01 Sweetwater Lake Butachlor 525.2 ND 0.05 μg/l 09/19/01 Sweetwater Lake Butylbenzylphthalate 525.2 ND 0.5 μg/l 09/19/01 Sweetwater Lake Caffeine 525.2 ND 0.02 μg/l 09/19/01 Sweetwater Lake Chlordane 525.2 ND 0.05 μg/l 09/19/01 Sweetwater Lake Chrysene 525.2 ND 0.02 μg/l 09/19/01 Sweetwater Lake Di(2-Ethylhexyl)adipate 525.2 ND 0.6 μg/l 09/19/01 Sweetwater Lake Di(2-Ethylhexyl)phthalate 525.2 ND 0.6 μg/l 09/19/01 Sweetwater Lake Diazinon 525.2 ND 0.1 μg/l 09/19/01 Sweetwater Lake Dibenz(a,h)Anthracene 525.2 ND 0.05 μg/l 09/19/01 Sweetwater Lake Dieldrin 525.2 ND 0.2 μg/l 09/19/01 Sweetwater Lake Diethyl Phthalate 525.2 ND 0.5 μg/l 09/19/01 Sweetwater Lake Dimethoate (Cygon) 525.2 ND 10 μg/l 09/19/01 Sweetwater Lake Dimethyl Phthalate 525.2 ND 0.5 μg/l 09/19/01 Sweetwater Lake Di-n-Butyl Phthalate 525.2 ND 0.5 μg/l 09/19/01 Sweetwater Lake Diquat 549.2 ND 0.4 μg/l 09/19/01 Sweetwater Lake Endrin 525.2 ND 0.1 μg/l 09/19/01 Sweetwater Lake Fluoranthene 525.2 ND 0.1 μg/l 09/19/01 Sweetwater Lake Fluorene 525.2 ND 0.05 μg/l 09/19/01 Sweetwater Lake gamma-Chlordane 525.2 ND 0.05 μg/l 09/19/01 Sweetwater Lake Heptachlor 525.2 ND 0.04 μg/l 09/19/01 Sweetwater Lake Heptachlor Epoxide 525.2 ND 0.02 μg/l 09/19/01 Sweetwater Lake Hexachlorobenzene 525.2 ND 0.05 μg/l 09/19/01 Sweetwater Lake Hexachlorocyclopentadiene 525.2 ND 0.05 μg/l 09/19/01 Sweetwater Lake Indeno(1,2,3,c,d)Pyrene 525.2 ND 0.05 μg/l 09/19/01 Sweetwater Lake Isophorone 525.2 ND 0.5 μg/l 09/19/01 Sweetwater Lake Lindane 525.2 ND 0.02 μg/l 09/19/01 Sweetwater Lake Methoxychlor 525.2 ND 0.05 μg/l 09/19/01 Sweetwater Lake Metolachlor 525.2 ND 0.05 μg/l 09/19/01 Sweetwater Lake Metribuzin 525.2 ND 0.05 μg/l 09/19/01 Sweetwater Lake Molinate (Ordram) 525.2 ND 0.2 μg/l 09/19/01 Sweetwater Lake Paraquat 549.2 ND 2 μg/l 09/19/01 Sweetwater Lake Pentachlorophenol (PCP) 525.2 ND 1 μg/l 09/19/01 Sweetwater Lake Phenanthrene 525.2 ND 0.02 μg/l 09/19/01 Sweetwater Lake Prometryn (Caparol) 525.2 ND 0.5 μg/l 09/19/01 Sweetwater Lake Propachlor 525.2 ND 0.05 μg/l 09/19/01 Sweetwater Lake Pyrene 525.2 ND 0.05 μg/l 09/19/01 Sweetwater Lake Simazine (Princep) 525.2 ND 0.05 μg/l 09/19/01 Sweetwater Lake Thiobencarb (Bolero) 525.2 ND 0.2 μg/l 09/19/01 Sweetwater Lake trans-Nonachlor 525.2 ND 0.05 μg/l 09/19/01 Sweetwater Lake Trifluralin 525.2 ND 0.1 μg/l 10/15/01 Sweetwater Lake Alachlor (Alanex) 507 ND 0.2 μg/l 10/15/01 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.1 μg/l 10/15/01 Sweetwater Lake Bromacil (Hyvar) 507 ND 2.2 μg/l 10/15/01 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 10/15/01 Sweetwater Lake Diazinon 507 ND 0.1 μg/l 10/15/01 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 10/15/01 Sweetwater Lake Glyphosate 547 ND 6 μg/l 10/15/01 Sweetwater Lake Molinate (Ordram) 507 ND 0.4 μg/l 10/15/01 Sweetwater Lake Prometryn (Caparol) 507 ND 0.5 μg/l 10/15/01 Sweetwater Lake Simazine (Princep) 507 ND 0.07 μg/l 10/15/01 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 01/16/02 Sweetwater Lake Glyphosate 547 ND 6 μg/l 01/21/02 Sweetwater Lake 1,2,3-Trichloropropane (TCP 504.1 ND 0.05 μg/l 01/21/02 Sweetwater Lake 2,4-Dinitrotoluene 525.2 ND 2 μg/l 01/21/02 Sweetwater Lake 2,6-Dinitrotoluene 525.2 ND 2 μg/l 01/21/02 Sweetwater Lake 4,4'-DDE 525.2 ND 0.8 μg/l 01/21/02 Sweetwater Lake Acetochlor 525.2 ND 2 μg/l 01/21/02 Sweetwater Lake DCPA di- and mono-acids 515.3 ND 1 μg/l 01/21/02 Sweetwater Lake EPTC 525.2 ND 1 μg/l 01/21/02 Sweetwater Lake Molinate (Ordram) 525.2 ND 0.9 μg/l 01/21/02 Sweetwater Lake Terbacil 525.2 ND 2 μg/l 03/21/02 Sweetwater Lake Alachlor (Alanex) 507 ND 0.5 μg/l 03/21/02 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.5 μg/l 03/21/02 Sweetwater Lake Bromacil (Hyvar) 507 ND 5 μg/l 03/21/02 Sweetwater Lake Cyanazine 507 ND 0.5 μg/l 03/21/02 Sweetwater Lake Diazinon 507 ND 0.5 μg/l 03/21/02 Sweetwater Lake Dimethoate (Cygon) 507 ND 0.5 μg/l 03/21/02 Sweetwater Lake Molinate (Ordram) 507 ND 0.5 μg/l 03/21/02 Sweetwater Lake Prometryn (Caparol) 507 ND 0.5 μg/l 03/21/02 Sweetwater Lake Simazine (Princep) 507 ND 0.5 μg/l 03/21/02 Sweetwater Lake Thiobencarb (Bolero) 507 ND 0.5 μg/l 04/09/02 Sweetwater Lake 1,2,3-Trichloropropane (TCP 504.1 ND 0.05 μg/l 04/09/02 Sweetwater Lake 2,4-Dinitrotoluene 525.2 ND 2 μg/l 04/09/02 Sweetwater Lake 2,6-Dinitrotoluene 525.2 ND 2 μg/l 04/09/02 Sweetwater Lake 4,4'-DDE 525.2 ND 0.8 μg/l 04/09/02 Sweetwater Lake Acetochlor 525.2 ND 2 μg/l 04/09/02 Sweetwater Lake DCPA di- and mono-acids 515.3 ND 1 μg/l 04/09/02 Sweetwater Lake EPTC 525.2 ND 1 μg/l 04/09/02 Sweetwater Lake Molinate (Ordram) 525.2 ND 0.9 μg/l 04/09/02 Sweetwater Lake Terbacil 525.2 ND 2 μg/l 04/23/02 Sweetwater Lake Glyphosate 547 ND 25 μg/l 04/23/02 Sweetwater Lake Simazine (Princep) 507 ND 0.5 μg/l 07/11/02 Sweetwater Lake 1,2,3-Trichloropropane (TCP 504.1 ND 0.005 μg/l 07/11/02 Sweetwater Lake 2,4-Dinitrotoluene 525.2 ND 2 μg/l 07/11/02 Sweetwater Lake 2,6-Dinitrotoluene 525.2 ND 2 μg/l 07/11/02 Sweetwater Lake 4,4'-DDE 525.2 ND 0.8 μg/l 07/11/02 Sweetwater Lake Acetochlor 525.2 ND 2 μg/l 07/11/02 Sweetwater Lake DCPA di- and mono-acids 515.3 ND 1 μg/l 07/11/02 Sweetwater Lake EPTC 525.2 ND 1 μg/l 07/11/02 Sweetwater Lake Glyphosate 547 ND 25 μg/l 07/11/02 Sweetwater Lake Molinate (Ordram) 525.2 ND 0.9 μg/l 07/11/02 Sweetwater Lake Simazine (Princep) 507 ND 0.5 μg/l 07/11/02 Sweetwater Lake Terbacil 525.2 ND 2 μg/l 10/16/02 Sweetwater Lake 1,2,3-Trichloropropane (TCP 504.1 ND 0.005 μg/l 10/16/02 Sweetwater Lake 2,4-Dinitrotoluene 525.2 ND 2 μg/l 10/16/02 Sweetwater Lake 2,6-Dinitrotoluene 525.2 ND 2 μg/l 10/16/02 Sweetwater Lake 4,4'-DDE 525.2 ND 0.8 μg/l 10/16/02 Sweetwater Lake Acetochlor 525.2 ND 2 μg/l 10/16/02 Sweetwater Lake DCPA di- and mono-acids 515.3 ND 1 μg/l 10/16/02 Sweetwater Lake EPTC 525.2 ND 1 μg/l 10/16/02 Sweetwater Lake Molinate (Ordram) 525.2 ND 0.9 μg/l 10/16/02 Sweetwater Lake Terbacil 525.2 ND 2 μg/l 10/22/02 Sweetwater Lake Alachlor (Alanex) 507 ND 1 μg/l 10/22/02 Sweetwater Lake Atrazine (AAtrex) 507 ND 1 μg/l 10/22/02 Sweetwater Lake Glyphosate 547 ND 25 μg/l 10/22/02 Sweetwater Lake Molinate (Ordram) 507 ND 2 μg/l 10/22/02 Sweetwater Lake Simazine (Princep) 507 ND 1 μg/l 10/22/02 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 01/16/03 Sweetwater Lake Atrazine (AAtrex) 507 ND 0.5 μg/l 01/16/03 Sweetwater Lake Glyphosate 547 ND 25 μg/l 01/16/03 Sweetwater Lake Simazine (Princep) 507 ND 0.5 μg/l 04/16/03 Sweetwater Lake Alachlor (Alanex) 507 ND 1 μg/l 04/16/03 Sweetwater Lake Atrazine (AAtrex) 507 ND 1 μg/l 04/16/03 Sweetwater Lake Bromacil (Hyvar) 507 ND 10 μg/l 04/16/03 Sweetwater Lake Butachlor 507 ND 0.38 μg/l 04/16/03 Sweetwater Lake Diazinon 507 ND 0.25 μg/l 04/16/03 Sweetwater Lake Dimethoate (Cygon) 507 ND 10 μg/l 04/16/03 Sweetwater Lake Glyphosate 547 ND 25 μg/l 04/16/03 Sweetwater Lake Metolachlor 507 ND μg/l 04/16/03 Sweetwater Lake Metribuzin 507 ND μg/l 04/16/03 Sweetwater Lake Molinate (Ordram) 507 ND 2 μg/l 04/16/03 Sweetwater Lake Prometryn (Caparol) 507 ND 2 μg/l 04/16/03 Sweetwater Lake Simazine (Princep) 507 ND 1 μg/l 04/16/03 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 07/14/03 Sweetwater Lake Alachlor (Alanex) 507 ND 1 μg/l 07/14/03 Sweetwater Lake Atrazine (AAtrex) 507 ND 1 μg/l 07/14/03 Sweetwater Lake Glyphosate 547 ND 25 μg/l 07/14/03 Sweetwater Lake Molinate (Ordram) 507 ND 2 μg/l 07/14/03 Sweetwater Lake Simazine (Princep) 507 ND 1 μg/l 07/14/03 Sweetwater Lake Thiobencarb (Bolero) 507 ND 1 μg/l 10/22/03 Sweetwater Lake Alachlor (Alanex) 525.2 ND 1 μg/l 10/22/03 Sweetwater Lake Atrazine (AAtrex) 525.2 ND 1 μg/l 10/22/03 Sweetwater Lake Benzo(a)pyrene 525.2 ND 0.1 μg/l 10/22/03 Sweetwater Lake Bis(2-Ethylhexyl)Adipate 525.2 ND 3 μg/l 10/22/03 Sweetwater Lake Bis(2-Ethylhexyl)Phthalate 525.2 ND 3 μg/l 10/22/03 Sweetwater Lake Bromacil (Hyvar) 525.2 ND 10 μg/l 10/22/03 Sweetwater Lake Butachlor 525.2 ND 0.38 μg/l 10/22/03 Sweetwater Lake Diazinon 525.2 ND 0.25 μg/l 10/22/03 Sweetwater Lake Dimethoate (Cygon) 525.2 ND 10 μg/l 10/22/03 Sweetwater Lake Glyphosate 547 ND 25 μg/l 10/22/03 Sweetwater Lake Metolachlor 525.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Metribuzin 525.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Molinate (Ordram) 525.2 ND 2 μg/l 10/22/03 Sweetwater Lake Prometryn (Caparol) 525.2 ND 2 μg/l 10/22/03 Sweetwater Lake Propachlor 525.2 ND 0.5 μg/l 10/22/03 Sweetwater Lake Simazine (Princep) 525.2 ND 1 μg/l 10/22/03 Sweetwater Lake Thiobencarb (Bolero) 525.2 ND 1 μg/l 04/15/04 Sweetwater Lake Glyphosate 547 ND 25 μg/l 05/11/04 Sweetwater Lake Alachlor (Alanex) 525.2 ND 1 μg/l 05/11/04 Sweetwater Lake Atrazine (AAtrex) 525.2 ND 0.5 μg/l 05/11/04 Sweetwater Lake Simazine (Princep) 525.2 ND 1 μg/l 07/19/04 Sweetwater Lake Glyphosate 547 ND 25 μg/l 08/10/04 Sweetwater Lake Benzo(a)pyrene 525.2 ND 0.1 μg/l 08/10/04 Sweetwater Lake Bis(2-Ethylhexyl)Adipate 525.2 ND 5 μg/l 08/10/04 Sweetwater Lake Bis(2-Ethylhexyl)Phthalate 525.2 ND 3 μg/l 08/10/04 Sweetwater Lake Hexachlorobenzene 525.2 ND 0.5 μg/l 08/10/04 Sweetwater Lake Hexachlorocyclopentadiene 525.2 ND 1 μg/l 08/10/04 Sweetwater Lake Molinate (Ordram) 525.2 ND 2 μg/l 08/10/04 Sweetwater Lake Thiobencarb (Bolero) 525.2 ND 1 μg/l 10/20/04 Sweetwater Lake Benzo(a)pyrene 525.2 ND 0.1 μg/l 10/20/04 Sweetwater Lake Bis(2-Ethylhexyl)Adipate 525.2 ND 5 μg/l 10/20/04 Sweetwater Lake Bis(2-Ethylhexyl)Phthalate 525.2 ND 3 μg/l 10/20/04 Sweetwater Lake Glyphosate 547 ND 25 μg/l 10/20/04 Sweetwater Lake Hexachlorobenzene 525.2 ND 0.5 μg/l 10/20/04 Sweetwater Lake Hexachlorocyclopentadiene 525.2 ND 1 μg/l 10/20/04 Sweetwater Lake Molinate (Ordram) 525.2 ND 2 μg/l 10/20/04 Sweetwater Lake Simazine (Princep) 525.2 ND 1 μg/l 10/20/04 Sweetwater Lake Thiobencarb (Bolero) 525.2 ND 1 μg/l 01/20/05 Sweetwater Lake Benzo(a)pyrene 525.2 ND 0.1 μg/l 01/20/05 Sweetwater Lake Bis(2-Ethylhexyl)Adipate 525.2 ND 5 μg/l 01/20/05 Sweetwater Lake Bis(2-Ethylhexyl)Phthalate 525.2 ND 3 μg/l 01/20/05 Sweetwater Lake Hexachlorobenzene 525.2 ND 0.5 μg/l 01/20/05 Sweetwater Lake Hexachlorocyclopentadiene 525.2 ND 1 μg/l 01/20/05 Sweetwater Lake Molinate (Ordram) 525.2 ND 2 μg/l 01/20/05 Sweetwater Lake Simazine (Princep) 525.2 ND 0.5 μg/l 01/20/05 Sweetwater Lake Thiobencarb (Bolero) 525.2 ND 1 μg/l 02/01/05 Sweetwater Lake Glyphosate 547 ND 25 μg/l 04/12/05 Sweetwater Lake Benzo(a)pyrene 525.2 ND 0.1 μg/l 04/12/05 Sweetwater Lake Bis(2-Ethylhexyl)Adipate 525.2 ND 5 μg/l 04/12/05 Sweetwater Lake Glyphosate 547 ND 25 μg/l 04/12/05 Sweetwater Lake Hexachlorobenzene 525.2 ND 0.5 μg/l 04/12/05 Sweetwater Lake Hexachlorocyclopentadiene 525.2 ND 1 μg/l 04/12/05 Sweetwater Lake Molinate (Ordram) 525.2 ND 2 μg/l 04/12/05 Sweetwater Lake Thiobencarb (Bolero) 525.2 ND 1 μg/l 07/12/05 Sweetwater Lake Glyphosate 547 ND 25 μg/l 07/12/05 Sweetwater Lake Simazine (Princep) 525.2 ND 1 μg/l 10/31/05 Sweetwater Lake Alachlor (Alanex) 505 ND 1 μg/l 10/31/05 Sweetwater Lake Atrazine (AAtrex) 505 ND 0.5 μg/l 10/31/05 Sweetwater Lake Chlordane 505 ND 0.1 μg/l 10/31/05 Sweetwater Lake Endrin 505 ND 0.1 μg/l 10/31/05 Sweetwater Lake Glyphosate 547 ND 10 μg/l 10/31/05 Sweetwater Lake Heptachlor 505 ND 0.01 μg/l 10/31/05 Sweetwater Lake Heptachlor Epoxide 505 ND 0.01 μg/l 10/31/05 Sweetwater Lake Lindane 505 ND 0.2 μg/l 10/31/05 Sweetwater Lake Methoxychlor 505 ND 10 μg/l 10/31/05 Sweetwater Lake PCB 1016 Arochlor 505 ND 0.5 μg/l 10/31/05 Sweetwater Lake PCB 1221 Arochlor 505 ND 0.5 μg/l 10/31/05 Sweetwater Lake PCB 1232 Arochlor 505 ND 0.5 μg/l 10/31/05 Sweetwater Lake PCB 1242 Arochlor 505 ND 0.5 μg/l 10/31/05 Sweetwater Lake PCB 1248 Arochlor 505 ND 0.5 μg/l 10/31/05 Sweetwater Lake PCB 1254 Arochlor 505 ND 0.5 μg/l 10/31/05 Sweetwater Lake PCB 1260 Arochlor 505 ND 0.5 μg/l 10/31/05 Sweetwater Lake Simazine (Princep) 505 ND 1 μg/l 10/31/05 Sweetwater Lake Toxaphene 505 ND 1 μg/l 01/11/06 Sweetwater Lake Alachlor (Alanex) 525.2 ND 1 μg/l 01/11/06 Sweetwater Lake Atrazine (AAtrex) 525.2 ND 0.5 μg/l 01/11/06 Sweetwater Lake Benzo(a)pyrene 525.2 ND 0.1 μg/l 01/11/06 Sweetwater Lake Bis(2-Ethylhexyl)Adipate 525.2 ND 3 μg/l 01/11/06 Sweetwater Lake Bis(2-Ethylhexyl)Phthalate 525.2 ND 3 μg/l 01/11/06 Sweetwater Lake Bromacil (Hyvar) 525.2 ND 10 μg/l 01/11/06 Sweetwater Lake Butachlor 525.2 ND 0.38 μg/l 01/11/06 Sweetwater Lake Diazinon 525.2 ND 0.25 μg/l 01/11/06 Sweetwater Lake Dimethoate (Cygon) 525.2 ND 10 μg/l 01/11/06 Sweetwater Lake Glyphosate 547 ND 10 μg/l 01/11/06 Sweetwater Lake Metolachlor 525.2 ND 0.5 μg/l 01/11/06 Sweetwater Lake Metribuzin 525.2 ND 0.5 μg/l 01/11/06 Sweetwater Lake Molinate (Ordram) 525.2 ND 2 μg/l 01/11/06 Sweetwater Lake Prometryn (Caparol) 525.2 ND 2 μg/l 01/11/06 Sweetwater Lake Propachlor 525.2 ND 0.5 μg/l 01/11/06 Sweetwater Lake Simazine (Princep) 525.2 ND 1 μg/l 01/11/06 Sweetwater Lake Thiobencarb (Bolero) 525.2 ND 1 μg/l 04/12/06 Sweetwater Lake Alachlor (Alanex) 525.2 ND 1 μg/l 04/12/06 Sweetwater Lake Atrazine (AAtrex) 525.2 ND 0.5 μg/l 04/12/06 Sweetwater Lake Benzo(a)pyrene 525.2 ND 0.1 μg/l 04/12/06 Sweetwater Lake Bis(2-Ethylhexyl)Adipate 525.2 ND 3 μg/l 04/12/06 Sweetwater Lake Bis(2-Ethylhexyl)Phthalate 525.2 ND 3 μg/l 04/12/06 Sweetwater Lake Bromacil (Hyvar) 525.2 ND 10 μg/l 04/12/06 Sweetwater Lake Butachlor 525.2 ND 0.38 μg/l 04/12/06 Sweetwater Lake Diazinon 525.2 ND 0.25 μg/l 04/12/06 Sweetwater Lake Dimethoate (Cygon) 525.2 ND 10 μg/l 04/12/06 Sweetwater Lake Glyphosate 547 ND 25 μg/l 04/12/06 Sweetwater Lake Metolachlor 525.2 ND 0.5 μg/l 04/12/06 Sweetwater Lake Metribuzin 525.2 ND 0.5 μg/l 04/12/06 Sweetwater Lake Molinate (Ordram) 525.2 ND 2 μg/l 04/12/06 Sweetwater Lake Prometryn (Caparol) 525.2 ND 2 μg/l 04/12/06 Sweetwater Lake Propachlor 525.2 ND 0.5 μg/l 04/12/06 Sweetwater Lake Simazine (Princep) 525.2 ND 1 μg/l 04/12/06 Sweetwater Lake Thiobencarb (Bolero) 525.2 ND 1 μg/l 07/11/06 Sweetwater Lake Alachlor (Alanex) 525.2 ND 1 μg/l 07/11/06 Sweetwater Lake Atrazine (AAtrex) 525.2 ND 0.5 μg/l 07/11/06 Sweetwater Lake Benzo(a)pyrene 525.2 ND 0.1 μg/l 07/11/06 Sweetwater Lake Bis(2-Ethylhexyl)Adipate 525.2 ND 3 μg/l 07/11/06 Sweetwater Lake Bis(2-Ethylhexyl)Phthalate 525.2 ND 3 μg/l 07/11/06 Sweetwater Lake Bromacil (Hyvar) 525.2 ND 10 μg/l 07/11/06 Sweetwater Lake Butachlor 525.2 ND 0.38 μg/l 07/11/06 Sweetwater Lake Diazinon 525.2 ND 0.25 μg/l 07/11/06 Sweetwater Lake Dimethoate (Cygon) 525.2 ND 10 μg/l 07/11/06 Sweetwater Lake Glyphosate 547 ND 25 μg/l 07/11/06 Sweetwater Lake Metolachlor 525.2 ND 0.5 μg/l 07/11/06 Sweetwater Lake Metribuzin 525.2 ND 0.5 μg/l 07/11/06 Sweetwater Lake Molinate (Ordram) 525.2 ND 2 μg/l 07/11/06 Sweetwater Lake Prometryn (Caparol) 525.2 ND 2 μg/l 07/11/06 Sweetwater Lake Propachlor 525.2 ND 0.5 μg/l 07/11/06 Sweetwater Lake Simazine (Princep) 525.2 ND 1 μg/l 07/11/06 Sweetwater Lake Thiobencarb (Bolero) 525.2 ND 1 μg/l 10/10/06 Sweetwater Lake Alachlor (Alanex) 525.2 ND 1 μg/l 10/10/06 Sweetwater Lake Atrazine (AAtrex) 525.2 ND 0.5 μg/l 10/10/06 Sweetwater Lake Benzo(a)pyrene 525.2 ND 0.1 μg/l 10/10/06 Sweetwater Lake Bis(2-Ethylhexyl)Adipate 525.2 ND 3 μg/l 10/10/06 Sweetwater Lake Bis(2-Ethylhexyl)Phthalate 525.2 ND 3 μg/l 10/10/06 Sweetwater Lake Bromacil (Hyvar) 525.2 ND 10 μg/l 10/10/06 Sweetwater Lake Butachlor 525.2 ND 0.38 μg/l 10/10/06 Sweetwater Lake Diazinon 525.2 ND 0.25 μg/l 10/10/06 Sweetwater Lake Dimethoate (Cygon) 525.2 ND 10 μg/l 10/10/06 Sweetwater Lake Glyphosate 547 ND 25 μg/l 10/10/06 Sweetwater Lake Metolachlor 525.2 ND 0.5 μg/l 10/10/06 Sweetwater Lake Metribuzin 525.2 ND 0.5 μg/l 10/10/06 Sweetwater Lake Molinate (Ordram) 525.2 ND 2 μg/l 10/10/06 Sweetwater Lake Prometryn (Caparol) 525.2 ND 2 μg/l 10/10/06 Sweetwater Lake Propachlor 525.2 ND 0.5 μg/l 10/10/06 Sweetwater Lake Simazine (Princep) 525.2 ND 1 μg/l 10/10/06 Sweetwater Lake Thiobencarb (Bolero) 525.2 ND 1 μg/l 02/06/98 Sweetwater River Alachlor (Alanex) 507 ND 0.1 μg/l 02/06/98 Sweetwater River Atrazine (AAtrex) 507 ND 0.1 μg/l 02/06/98 Sweetwater River Bromacil (Hyvar) 507 ND 2.2 μg/l 02/06/98 Sweetwater River Cyanazine 507 ND 0.5 μg/l 02/06/98 Sweetwater River Diazinon 507 0.170 0.1 μg/l 02/06/98 Sweetwater River Dimethoate (Cygon) 507 ND 10 μg/l 02/06/98 Sweetwater River Molinate (Ordram) 507 ND 0.4 μg/l 02/06/98 Sweetwater River Prometryn (Caparol) 507 ND 0.5 μg/l 02/06/98 Sweetwater River Simazine (Princep) 507 0.150 0.07 μg/l 02/06/98 Sweetwater River Thiobencarb (Bolero) 507 ND 1 μg/l 04/03/98 Sweetwater River Alachlor (Alanex) 507 ND 0.2 μg/l 04/03/98 Sweetwater River Atrazine (AAtrex) 507 ND 0.1 μg/l 04/03/98 Sweetwater River Bromacil (Hyvar) 507 ND 2.2 μg/l 04/03/98 Sweetwater River Cyanazine 507 ND 0.5 μg/l 04/03/98 Sweetwater River Diazinon 507 0.300 0.1 μg/l 04/03/98 Sweetwater River Dimethoate (Cygon) 507 ND 10 μg/l 04/03/98 Sweetwater River Molinate (Ordram) 507 ND 0.4 μg/l 04/03/98 Sweetwater River Prometryn (Caparol) 507 ND 0.5 μg/l 04/03/98 Sweetwater River Simazine (Princep) 507 0.270 0.07 μg/l 04/03/98 Sweetwater River Thiobencarb (Bolero) 507 ND 1 μg/l 01/27/00 Sweetwater River @ Wood Bridge 2,4,5-T 515.1 ND 0.2 μg/l 01/27/00 Sweetwater River @ Wood Bridge 2,4,5-TP (Silvex) 515.1 ND 0.2 μg/l 01/27/00 Sweetwater River @ Wood Bridge 2,4-D 515.1 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge 2,4-DB 515.1 ND 2 μg/l 01/27/00 Sweetwater River @ Wood Bridge 2,4-Dinitrotoluene 525.2 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge 2,6-Dinitrotoluene 525.2 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge 3,5-Dichlorobenzoic acid 515.1 ND 0.5 μg/l 01/27/00 Sweetwater River @ Wood Bridge 3-Hydroxycarbofuran 531 ND 2 μg/l 01/27/00 Sweetwater River @ Wood Bridge 4,4'-DDD 525.2 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge 4,4'-DDE 525.2 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge 4,4'-DDT 525.2 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge 4-Nitrophenol 515.1 ND 5 μg/l 01/27/00 Sweetwater River @ Wood Bridge Acenaphthene 525.2 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge Acenaphthylene 525.2 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge Acetochlor 525.2 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge Acifluorfen 515.1 ND 0.2 μg/l 01/27/00 Sweetwater River @ Wood Bridge Alachlor (Alanex) 525.2 ND 0.05 μg/l 01/27/00 Sweetwater River @ Wood Bridge Alachlor (Alanex) 508 ND 0.05 μg/l 01/27/00 Sweetwater River @ Wood Bridge Aldicarb (TEMIK) 531 ND 0.5 μg/l 01/27/00 Sweetwater River @ Wood Bridge Aldicarb sulfone 531 ND 0.7 μg/l 01/27/00 Sweetwater River @ Wood Bridge Aldicarb sulfoxide 531 ND 0.5 μg/l 01/27/00 Sweetwater River @ Wood Bridge Aldrin 525.2 ND 0.05 μg/l 01/27/00 Sweetwater River @ Wood Bridge Aldrin 508 ND 0.01 μg/l 01/27/00 Sweetwater River @ Wood Bridge Alpha-BHC 508 ND 0.01 μg/l 01/27/00 Sweetwater River @ Wood Bridge Anthracene 525.2 ND 0.02 μg/l 01/27/00 Sweetwater River @ Wood Bridge Atrazine (AAtrex) 525.2 ND 0.05 μg/l 01/27/00 Sweetwater River @ Wood Bridge Baygon 531 ND 2 μg/l 01/27/00 Sweetwater River @ Wood Bridge Bentazon (Basagran) 515.1 ND 0.5 μg/l 01/27/00 Sweetwater River @ Wood Bridge Benz(a)Anthracene 525.2 ND 0.05 μg/l 01/27/00 Sweetwater River @ Wood Bridge Benzo(a)pyrene 525.2 ND 0.02 μg/l 01/27/00 Sweetwater River @ Wood Bridge Benzo(b)Fluoranthene 525.2 ND 0.02 μg/l 01/27/00 Sweetwater River @ Wood Bridge Benzo(g,h,i)Perylene 525.2 ND 0.05 μg/l 01/27/00 Sweetwater River @ Wood Bridge Benzo(k)Fluoranthene 525.2 ND 0.02 μg/l 01/27/00 Sweetwater River @ Wood Bridge Beta-BHC 508 ND 0.01 μg/l 01/27/00 Sweetwater River @ Wood Bridge Bromacil (Hyvar) 525.2 ND 0.2 μg/l 01/27/00 Sweetwater River @ Wood Bridge Butachlor 525.2 ND 0.05 μg/l 01/27/00 Sweetwater River @ Wood Bridge Butylbenzylphthalate 525.2 ND 0.5 μg/l 01/27/00 Sweetwater River @ Wood Bridge Caffeine 525.2 ND 0.02 μg/l 01/27/00 Sweetwater River @ Wood Bridge Carbaryl (Sevin) 531 ND 2 μg/l 01/27/00 Sweetwater River @ Wood Bridge Carbofuran (FURADAN) 531 ND 0.9 μg/l 01/27/00 Sweetwater River @ Wood Bridge Chlopyrifos (Dursban) 525.2 ND 0.05 μg/l 01/27/00 Sweetwater River @ Wood Bridge Chlordane 525.2 ND 0.05 μg/l 01/27/00 Sweetwater River @ Wood Bridge Chlordane 508 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge Chlorobenzilate 525.2 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge Chloroneb 525.2 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge Chlorothalonil (Draconil, Brav 508 ND 0.01 μg/l 01/27/00 Sweetwater River @ Wood Bridge Chrysene 525.2 ND 0.02 μg/l 01/27/00 Sweetwater River @ Wood Bridge Dalapon 515.1 ND 1 μg/l 01/27/00 Sweetwater River @ Wood Bridge DCPA 515.1 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge Delta-BHC 508 ND 0.01 μg/l 01/27/00 Sweetwater River @ Wood Bridge Di(2-Ethylhexyl)adipate 525.2 ND 0.6 μg/l 01/27/00 Sweetwater River @ Wood Bridge Di(2-Ethylhexyl)phthalate 525.2 2.300 0.6 μg/l 01/27/00 Sweetwater River @ Wood Bridge Diazinon 525.2 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge Dibenz(a,h)Anthracene 525.2 ND 0.05 μg/l 01/27/00 Sweetwater River @ Wood Bridge Dibromochloropropane (DBC 504.1 ND 0.01 μg/l 01/27/00 Sweetwater River @ Wood Bridge Dicamba (Banvel) 515.1 ND 0.08 μg/l 01/27/00 Sweetwater River @ Wood Bridge Dichlorprop 515.1 ND 0.5 μg/l 01/27/00 Sweetwater River @ Wood Bridge Dichlorvos (DDVP) 525.2 ND 0.05 μg/l 01/27/00 Sweetwater River @ Wood Bridge Dieldrin 525.2 ND 0.2 μg/l 01/27/00 Sweetwater River @ Wood Bridge Dieldrin 508 ND 0.01 μg/l 01/27/00 Sweetwater River @ Wood Bridge Diethyl Phthalate 525.2 ND 0.5 μg/l 01/27/00 Sweetwater River @ Wood Bridge Dimethoate (Cygon) 525.2 ND 10 μg/l 01/27/00 Sweetwater River @ Wood Bridge Dimethyl Phthalate 525.2 ND 0.5 μg/l 01/27/00 Sweetwater River @ Wood Bridge Di-n-Butyl Phthalate 525.2 ND 0.5 μg/l 01/27/00 Sweetwater River @ Wood Bridge Di-n-Octyl Phthalate 525.2 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge Dinoseb (DNBP) 515.1 ND 0.2 μg/l 01/27/00 Sweetwater River @ Wood Bridge Endosulfan I (alpha) 508 ND 0.01 μg/l 01/27/00 Sweetwater River @ Wood Bridge Endosulfan II (beta) 508 ND 0.01 μg/l 01/27/00 Sweetwater River @ Wood Bridge Endosulfan sulfate 508 ND 0.01 μg/l 01/27/00 Sweetwater River @ Wood Bridge Endrin 525.2 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge Endrin 508 ND 0.01 μg/l 01/27/00 Sweetwater River @ Wood Bridge Endrin Aldehyde 508 ND 0.01 μg/l 01/27/00 Sweetwater River @ Wood Bridge EPTC 525.2 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge Ethylene Dibromide (EDB) 504.1 ND 0.01 μg/l 01/27/00 Sweetwater River @ Wood Bridge Fluoranthene 525.2 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge Fluorene 525.2 ND 0.05 μg/l 01/27/00 Sweetwater River @ Wood Bridge gamma-Chlordane 525.2 ND 0.05 μg/l 01/27/00 Sweetwater River @ Wood Bridge Glyphosate 547 ND 6 μg/l 01/27/00 Sweetwater River @ Wood Bridge Heptachlor 525.2 ND 0.04 μg/l 01/27/00 Sweetwater River @ Wood Bridge Heptachlor 508 ND 0.01 μg/l 01/27/00 Sweetwater River @ Wood Bridge Heptachlor epoxide 508 ND 0.01 μg/l 01/27/00 Sweetwater River @ Wood Bridge Heptachlor Epoxide (isomer A 525.2 ND 0.02 μg/l 01/27/00 Sweetwater River @ Wood Bridge Heptachlor Epoxide (isomer B 525.2 ND 0.02 μg/l 01/27/00 Sweetwater River @ Wood Bridge Hexachlorobenzene 525.2 ND 0.05 μg/l 01/27/00 Sweetwater River @ Wood Bridge Hexachlorocyclopentadiene 525.2 ND 0.05 μg/l 01/27/00 Sweetwater River @ Wood Bridge Indeno(1,2,3,c,d)Pyrene 525.2 ND 0.05 μg/l 01/27/00 Sweetwater River @ Wood Bridge Isophorone 525.2 ND 0.5 μg/l 01/27/00 Sweetwater River @ Wood Bridge Lindane 525.2 ND 0.02 μg/l 01/27/00 Sweetwater River @ Wood Bridge Lindane (gamma-BHC) 508 ND 0.01 μg/l 01/27/00 Sweetwater River @ Wood Bridge Malathion 525.2 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge Methiocarb 531 ND 2 μg/l 01/27/00 Sweetwater River @ Wood Bridge Methomyl 531 ND 1 μg/l 01/27/00 Sweetwater River @ Wood Bridge Methoxychlor 525.2 ND 0.05 μg/l 01/27/00 Sweetwater River @ Wood Bridge Methoxychlor 508 ND 0.05 μg/l 01/27/00 Sweetwater River @ Wood Bridge Metolachlor 525.2 ND 0.05 μg/l 01/27/00 Sweetwater River @ Wood Bridge Metribuzin 525.2 ND 0.05 μg/l 01/27/00 Sweetwater River @ Wood Bridge Molinate (Ordram) 525.2 ND 0.2 μg/l 01/27/00 Sweetwater River @ Wood Bridge Naphthalene 525.2 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge Nitrobenzene 525.2 ND 5 μg/l 01/27/00 Sweetwater River @ Wood Bridge Oxamyl (Vydate) 531 ND 2 μg/l 01/27/00 Sweetwater River @ Wood Bridge p,p' DDD 508 ND 0.01 μg/l 01/27/00 Sweetwater River @ Wood Bridge p,p' DDE 508 ND 0.01 μg/l 01/27/00 Sweetwater River @ Wood Bridge p,p' DDT 508 ND 0.01 μg/l 01/27/00 Sweetwater River @ Wood Bridge Parathion 525.2 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge PCB 1016 Arochlor 508 ND 0.07 μg/l 01/27/00 Sweetwater River @ Wood Bridge PCB 1221 Arochlor 508 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge PCB 1232 Arochlor 508 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge PCB 1242 Arochlor 508 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge PCB 1248 Arochlor 508 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge PCB 1254 Arochlor 508 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge PCB 1260 Arochlor 508 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge Pentachlorophenol (PCP) 525.2 ND 1 μg/l 01/27/00 Sweetwater River @ Wood Bridge Pentachlorophenol (PCP) 515.1 ND 0.04 μg/l 01/27/00 Sweetwater River @ Wood Bridge Permethrin (mixed isomers) 525.2 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge Phenanthrene 525.2 ND 0.02 μg/l 01/27/00 Sweetwater River @ Wood Bridge Picloram 515.1 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge Prometryn (Caparol) 525.2 ND 0.5 μg/l 01/27/00 Sweetwater River @ Wood Bridge Propachlor 525.2 ND 0.05 μg/l 01/27/00 Sweetwater River @ Wood Bridge Pyrene 525.2 ND 0.05 μg/l 01/27/00 Sweetwater River @ Wood Bridge Simazine (Princep) 525.2 ND 0.05 μg/l 01/27/00 Sweetwater River @ Wood Bridge Terbacil 525.2 ND 0.1 μg/l 01/27/00 Sweetwater River @ Wood Bridge Thiobencarb (Bolero) 525.2 ND 0.2 μg/l 01/27/00 Sweetwater River @ Wood Bridge Toxaphene 508 ND 0.5 μg/l 01/27/00 Sweetwater River @ Wood Bridge trans-Nonachlor 525.2 ND 0.05 μg/l 01/27/00 Sweetwater River @ Wood Bridge Trifluralin 525.2 ND 0.1 μg/l 02/11/00 Willowglen Well 2,4,5-T 515.1 ND 0.2 μg/l 02/11/00 Willowglen Well 2,4,5-TP (Silvex) 515.1 ND 0.2 μg/l 02/11/00 Willowglen Well 2,4-D 515.1 ND 0.1 μg/l 02/11/00 Willowglen Well 2,4-DB 515.1 ND 2 μg/l 02/11/00 Willowglen Well 2,4-Dinitrotoluene 525.2 ND 0.1 μg/l 02/11/00 Willowglen Well 2,6-Dinitrotoluene 525.2 ND 0.1 μg/l 02/11/00 Willowglen Well 3,5-Dichlorobenzoic acid 515.1 ND 0.5 μg/l 02/11/00 Willowglen Well 3-Hydroxycarbofuran 531 ND 2 μg/l 02/11/00 Willowglen Well 4,4'-DDD 525.2 ND 0.1 μg/l 02/11/00 Willowglen Well 4,4'-DDE 525.2 ND 0.1 μg/l 02/11/00 Willowglen Well 4,4'-DDT 525.2 ND 0.1 μg/l 02/11/00 Willowglen Well 4-Nitrophenol 515.1 ND 5 μg/l 02/11/00 Willowglen Well Acenaphthene 525.2 ND 0.1 μg/l 02/11/00 Willowglen Well Acenaphthylene 525.2 ND 0.1 μg/l 02/11/00 Willowglen Well Acetochlor 525.2 ND 0.1 μg/l 02/11/00 Willowglen Well Acifluorfen 515.1 ND 0.2 μg/l 02/11/00 Willowglen Well Alachlor (Alanex) 525.2 ND 0.05 μg/l 02/11/00 Willowglen Well Alachlor (Alanex) 508 ND 0.05 μg/l 02/11/00 Willowglen Well Aldicarb (TEMIK) 531 ND 0.5 μg/l 02/11/00 Willowglen Well Aldicarb sulfone 531 ND 0.7 μg/l 02/11/00 Willowglen Well Aldicarb sulfoxide 531 ND 0.5 μg/l 02/11/00 Willowglen Well Aldrin 525.2 ND 0.05 μg/l 02/11/00 Willowglen Well Aldrin 508 ND 0.01 μg/l 02/11/00 Willowglen Well Alpha-BHC 508 ND 0.01 μg/l 02/11/00 Willowglen Well Anthracene 525.2 ND 0.02 μg/l 02/11/00 Willowglen Well Atrazine (AAtrex) 525.2 ND 0.05 μg/l 02/11/00 Willowglen Well Baygon 531 ND 2 μg/l 02/11/00 Willowglen Well Bentazon (Basagran) 515.1 ND 0.5 μg/l 02/11/00 Willowglen Well Benz(a)Anthracene 525.2 ND 0.05 μg/l 02/11/00 Willowglen Well Benzo(a)pyrene 525.2 ND 0.02 μg/l 02/11/00 Willowglen Well Benzo(b)Fluoranthene 525.2 ND 0.02 μg/l 02/11/00 Willowglen Well Benzo(g,h,i)Perylene 525.2 ND 0.05 μg/l 02/11/00 Willowglen Well Benzo(k)Fluoranthene 525.2 ND 0.02 μg/l 02/11/00 Willowglen Well Beta-BHC 508 ND 0.01 μg/l 02/11/00 Willowglen Well Bromacil (Hyvar) 525.2 ND 0.2 μg/l 02/11/00 Willowglen Well Butachlor 525.2 ND 0.05 μg/l 02/11/00 Willowglen Well Butylbenzylphthalate 525.2 ND 0.5 μg/l 02/11/00 Willowglen Well Caffeine 525.2 ND 0.02 μg/l 02/11/00 Willowglen Well Carbaryl (Sevin) 531 ND 2 μg/l 02/11/00 Willowglen Well Carbofuran (FURADAN) 531 ND 0.9 μg/l 02/11/00 Willowglen Well Chlopyrifos (Dursban) 525.2 ND 0.05 μg/l 02/11/00 Willowglen Well Chlordane 525.2 ND 0.05 μg/l 02/11/00 Willowglen Well Chlordane 508 ND 0.1 μg/l 02/11/00 Willowglen Well Chlorobenzilate 525.2 ND 0.1 μg/l 02/11/00 Willowglen Well Chloroneb 525.2 ND 0.1 μg/l 02/11/00 Willowglen Well Chlorothalonil (Draconil, Brav 508 ND 0.01 μg/l 02/11/00 Willowglen Well Chrysene 525.2 ND 0.02 μg/l 02/11/00 Willowglen Well Dalapon 515.1 ND 1 μg/l 02/11/00 Willowglen Well DCPA 515.1 ND 0.1 μg/l 02/11/00 Willowglen Well Delta-BHC 508 ND 0.01 μg/l 02/11/00 Willowglen Well Di(2-Ethylhexyl)adipate 525.2 ND 0.6 μg/l 02/11/00 Willowglen Well Di(2-Ethylhexyl)phthalate 525.2 0.800 0.6 μg/l 02/11/00 Willowglen Well Diazinon 525.2 ND 0.1 μg/l 02/11/00 Willowglen Well Dibenz(a,h)Anthracene 525.2 ND 0.05 μg/l 02/11/00 Willowglen Well Dibromochloropropane (DBC 504.1 ND 0.01 μg/l 02/11/00 Willowglen Well Dicamba (Banvel) 515.1 ND 0.08 μg/l 02/11/00 Willowglen Well Dichlorprop 515.1 ND 0.5 μg/l 02/11/00 Willowglen Well Dichlorvos (DDVP) 525.2 ND 0.05 μg/l 02/11/00 Willowglen Well Dieldrin 525.2 ND 0.2 μg/l 02/11/00 Willowglen Well Dieldrin 508 ND 0.01 μg/l 02/11/00 Willowglen Well Diethyl Phthalate 525.2 ND 0.5 μg/l 02/11/00 Willowglen Well Dimethoate (Cygon) 525.2 ND 10 μg/l 02/11/00 Willowglen Well Dimethyl Phthalate 525.2 ND 0.5 μg/l 02/11/00 Willowglen Well Di-n-Butyl Phthalate 525.2 ND 0.5 μg/l 02/11/00 Willowglen Well Di-n-Octyl Phthalate 525.2 ND 0.1 μg/l 02/11/00 Willowglen Well Dinoseb (DNBP) 515.1 ND 0.2 μg/l 02/11/00 Willowglen Well Endosulfan I (alpha) 508 ND 0.01 μg/l 02/11/00 Willowglen Well Endosulfan II (beta) 508 ND 0.01 μg/l 02/11/00 Willowglen Well Endosulfan sulfate 508 ND 0.01 μg/l 02/11/00 Willowglen Well Endrin 525.2 ND 0.1 μg/l 02/11/00 Willowglen Well Endrin 508 ND 0.01 μg/l 02/11/00 Willowglen Well Endrin Aldehyde 508 ND 0.01 μg/l 02/11/00 Willowglen Well EPTC 525.2 ND 0.1 μg/l 02/11/00 Willowglen Well Ethylene Dibromide (EDB) 504.1 ND 0.01 μg/l 02/11/00 Willowglen Well Fluoranthene 525.2 ND 0.1 μg/l 02/11/00 Willowglen Well Fluorene 525.2 ND 0.05 μg/l 02/11/00 Willowglen Well gamma-Chlordane 525.2 ND 0.05 μg/l 02/11/00 Willowglen Well Glyphosate 547 ND 6 μg/l 02/11/00 Willowglen Well Heptachlor 525.2 ND 0.04 μg/l 02/11/00 Willowglen Well Heptachlor 508 ND 0.01 μg/l 02/11/00 Willowglen Well Heptachlor epoxide 508 ND 0.01 μg/l 02/11/00 Willowglen Well Heptachlor Epoxide (isomer A 525.2 ND 0.02 μg/l 02/11/00 Willowglen Well Heptachlor Epoxide (isomer B 525.2 ND 0.02 μg/l 02/11/00 Willowglen Well Hexachlorobenzene 525.2 ND 0.05 μg/l 02/11/00 Willowglen Well Hexachlorocyclopentadiene 525.2 ND 0.05 μg/l 02/11/00 Willowglen Well Indeno(1,2,3,c,d)Pyrene 525.2 ND 0.05 μg/l 02/11/00 Willowglen Well Isophorone 525.2 ND 0.5 μg/l 02/11/00 Willowglen Well Lindane 525.2 ND 0.02 μg/l 02/11/00 Willowglen Well Lindane (gamma-BHC) 508 ND 0.01 μg/l 02/11/00 Willowglen Well Malathion 525.2 ND 0.1 μg/l 02/11/00 Willowglen Well Methiocarb 531 ND 2 μg/l 02/11/00 Willowglen Well Methomyl 531 ND 1 μg/l 02/11/00 Willowglen Well Methoxychlor 525.2 ND 0.05 μg/l 02/11/00 Willowglen Well Methoxychlor 508 ND 0.05 μg/l 02/11/00 Willowglen Well Metolachlor 525.2 ND 0.05 μg/l 02/11/00 Willowglen Well Metribuzin 525.2 ND 0.05 μg/l 02/11/00 Willowglen Well Molinate (Ordram) 525.2 ND 0.2 μg/l 02/11/00 Willowglen Well Naphthalene 525.2 ND 0.1 μg/l 02/11/00 Willowglen Well Nitrobenzene 525.2 ND 5 μg/l 02/11/00 Willowglen Well Oxamyl (Vydate) 531 ND 2 μg/l 02/11/00 Willowglen Well p,p' DDD 508 ND 0.01 μg/l 02/11/00 Willowglen Well p,p' DDE 508 ND 0.01 μg/l 02/11/00 Willowglen Well p,p' DDT 508 ND 0.01 μg/l 02/11/00 Willowglen Well Parathion 525.2 ND 0.1 μg/l 02/11/00 Willowglen Well PCB 1016 Arochlor 508 ND 0.07 μg/l 02/11/00 Willowglen Well PCB 1221 Arochlor 508 ND 0.1 μg/l 02/11/00 Willowglen Well PCB 1232 Arochlor 508 ND 0.1 μg/l 02/11/00 Willowglen Well PCB 1242 Arochlor 508 ND 0.1 μg/l 02/11/00 Willowglen Well PCB 1248 Arochlor 508 ND 0.1 μg/l 02/11/00 Willowglen Well PCB 1254 Arochlor 508 ND 0.1 μg/l 02/11/00 Willowglen Well PCB 1260 Arochlor 508 ND 0.1 μg/l 02/11/00 Willowglen Well Pentachlorophenol (PCP) 525.2 ND 1 μg/l 02/11/00 Willowglen Well Pentachlorophenol (PCP) 515.1 ND 0.04 μg/l 02/11/00 Willowglen Well Permethrin (mixed isomers) 525.2 ND 0.1 μg/l 02/11/00 Willowglen Well Phenanthrene 525.2 ND 0.02 μg/l 02/11/00 Willowglen Well Picloram 515.1 ND 0.1 μg/l 02/11/00 Willowglen Well Prometryn (Caparol) 525.2 ND 0.5 μg/l 02/11/00 Willowglen Well Propachlor 525.2 ND 0.05 μg/l 02/11/00 Willowglen Well Pyrene 525.2 ND 0.05 μg/l 02/11/00 Willowglen Well Simazine (Princep) 525.2 ND 0.05 μg/l 02/11/00 Willowglen Well Terbacil 525.2 ND 0.1 μg/l 02/11/00 Willowglen Well Thiobencarb (Bolero) 525.2 ND 0.2 μg/l 02/11/00 Willowglen Well Toxaphene 508 ND 0.5 μg/l 02/11/00 Willowglen Well trans-Nonachlor 525.2 ND 0.05 μg/l 02/11/00 Willowglen Well Trifluralin 525.2 ND 0.1 μg/l 12/11/02 Willowglen Well 2,4,5-T 515.3 ND 1 μg/l 12/11/02 Willowglen Well 2,4,5-TP (Silvex) 515.3 ND 1 μg/l 12/11/02 Willowglen Well 2,4-D 515.3 ND 10 μg/l 12/11/02 Willowglen Well 3-Hydroxycarbofuran 531.1 ND 3 μg/l 12/11/02 Willowglen Well Alachlor (Alanex) 525.2 ND 1 μg/l 12/11/02 Willowglen Well Aldicarb sulfoxide 531.1 ND 4 μg/l 12/11/02 Willowglen Well Aldrin 505 ND 0.075 μg/l 12/11/02 Willowglen Well Atrazine (AAtrex) 525.2 ND 1 μg/l 12/11/02 Willowglen Well Bentazon (Basagran) 515.3 ND 2 μg/l 12/11/02 Willowglen Well Benzo(a)pyrene 525.2 ND 0.1 μg/l 12/11/02 Willowglen Well Bis(2-Ethylhexyl)Adipate 525.2 ND 3 μg/l 12/11/02 Willowglen Well Bis(2-Ethylhexyl)Phthalate 525.2 ND 3 μg/l 12/11/02 Willowglen Well Bromacil (Hyvar) 525.2 ND 10 μg/l 12/11/02 Willowglen Well Butachlor 525.2 ND 0.38 μg/l 12/11/02 Willowglen Well Carbaryl (Sevin) 531.1 ND 5 μg/l 12/11/02 Willowglen Well Carbofuran (FURADAN) 531.1 ND 5 μg/l 12/11/02 Willowglen Well Chlordane 505 ND 0.1 μg/l 12/11/02 Willowglen Well Chlorothalonil (Draconil, Brav 505 ND 5 μg/l 12/11/02 Willowglen Well Dalapon 515.3 ND 10 μg/l 12/11/02 Willowglen Well Diazinon 525.2 ND 0.25 μg/l 12/11/02 Willowglen Well Dibromochloropropane (DBC 504.1 ND 0.01 μg/l 12/11/02 Willowglen Well Dicamba (Banvel) 515.3 ND 1.5 μg/l 12/11/02 Willowglen Well Dieldrin 505 ND 0.02 μg/l 12/11/02 Willowglen Well Dimethoate (Cygon) 525.2 ND 10 μg/l 12/11/02 Willowglen Well Dinoseb (DNBP) 515.3 ND 2 μg/l 12/11/02 Willowglen Well Endrin 505 ND 0.1 μg/l 12/11/02 Willowglen Well Ethylene Dibromide (EDB) 504.1 ND 0.02 μg/l 12/11/02 Willowglen Well Glyphosate 547 ND 25 μg/l 12/11/02 Willowglen Well Heptachlor 505 ND 0.01 μg/l 12/11/02 Willowglen Well Heptachlor Epoxide 505 ND 0.01 μg/l 12/11/02 Willowglen Well Hexachlorobenzene 505 ND 0.5 μg/l 12/11/02 Willowglen Well Hexachlorocyclopentadiene 505 ND 1 μg/l 12/11/02 Willowglen Well Lindane 505 ND 0.2 μg/l 12/11/02 Willowglen Well Methomyl 531.1 ND 2 μg/l 12/11/02 Willowglen Well Methoxychlor 505 ND 10 μg/l 12/11/02 Willowglen Well Metolachlor 525.2 ND 0.5 μg/l 12/11/02 Willowglen Well Metribuzin 525.2 ND 0.5 μg/l 12/11/02 Willowglen Well Molinate (Ordram) 525.2 ND 2 μg/l 12/11/02 Willowglen Well Oxamyl (Vydate) 531.1 ND 20 μg/l 12/11/02 Willowglen Well PCB's 505 ND 0.2 μg/l 12/11/02 Willowglen Well Pentachlorophenol (PCP) 515.3 ND 0.2 μg/l 12/11/02 Willowglen Well Picloram 515.3 ND 1 μg/l 12/11/02 Willowglen Well Prometryn (Caparol) 525.2 ND 2 μg/l 12/11/02 Willowglen Well Propachlor 525.2 ND 0.5 μg/l 12/11/02 Willowglen Well Simazine (Princep) 525.2 ND 1 μg/l 12/11/02 Willowglen Well Thiobencarb (Bolero) 525.2 ND 1 μg/l 12/11/02 Willowglen Well Toxaphene 505 ND 1 μg/l 12/11/02 Willowglen Well Trifluralin 505 ND 1 μg/l Nicotine Anti- Collection metabolite depressant

Station Name Date Metformin Cotinine Fluoxetine Caffeine Codeine* Anti-convulsant Acetaminophen 1,7- dimethylxanthine Sulfamethoxazole pressureBlood Dehydronifedipine BloodDiphenhydra mine* Azithromycin* Carbamazapine* Nicotinamided4ISTD Nicotinate-d4 Ethyl Surr mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l mg/l Perdue Treatment Plant - Finished Water 04/09/03 < LRL 0.0019 < LRL < LRL < LRL < LRL < LRL < LRL < LRL < LRL < LRL 0.006 1.08 0.772 Perdue Treatment Plant - Finished Water 02/11/03 < LRL 0.006 < LRL < LRL < LRL 0.0039 < LRL 0.0018 < LRL < LRL < LRL 0.0036 1.13 1.12 Perdue Treatment Plant - Finished Water 02/18/04 < LRL 0.0082 < LRL < LRL 0.0578 < LRL < LRL < LRL

[number below compound is the data parameter code, which is used in the USGS National Water Information System (NWIS), to uniquely identify a specific constituent; [LRL], laboratory reporting limit }; E, estimated value; NA, not analyzed all values are reported as micrograms per liter unless noted (mg/L)]

Detergent Wood Detergent General Pesticide Stimulant Pesticide Fecal Indicator Pesticide PAH Pesticide Pesticide Insecticide Metabolite Preservative Metabolite Disinfectant PAH N,N- diethylmetatol monoethoxy- para- cis- uamide Otcylphenol Nonylphenol Bisphenol A Bromocil Bromoform Caffeine Chlorodane Cholesterol Dieldrin Fluoranthene Isophorone Metolachlor (DEET) (OPEO1) para-Cresol (total) Phenol Pyrene Station Name [0.090, [0.080, [0.120, [0.060, [0.700, [0.450, [0.030, [LRL] Date Time 1.000] [0.500] [0.500] 0.500] [0.040] [1.500, 2.000] [0.080] [0.030, 0.500] [0.500] [0.080, 0.500] 1.000] 1.000] 5.000] 0.500] 0.500] Sweetwater Reservoir near pump tower 12/04/2000 1220 E 0.064 NA NA E 0.041 E 0.012 E 1.210 E 0.008 ------E 0.132 0.127 E 0.226 E 1.345 E 0.029 Perdue Treatment Plant- finished water at SWR 12/04/2000 1510 -- NA NA ------0.031 ------E 0.154 -- E 0.294 -- -- Perdue Treatment Plant- imported raw water at SW03/20/2001 1500 -- E 0.047 -- -- NA -- NA ------E 0.560 -- Loveland Reservoir near dam 03/21/2001 1130 ------NA E 0.600 NA ------E 0.310 -- Sweetwater Reservoir near pump tower 03/20/2002 1000 ------NA -- NA ------E 10 -- -- Perdue Treatment Plant- finished water at SWR 03/20/2002 1100 -- -- 14 -- NA -- NA ------SW River @ Low Flow Barrier 03/20/2002 1200 ------E 0.021 NA -- NA ------E 6.90 -- -- Sweetwater Reservoir near pump tower 06/11/2002 0930 -- -- E 0.22 -- NA -- NA ------E 0.0076 ------0.52 -- Perdue Treatment Plant- finished water at SWR 06/11/2002 1230 -- -- E 24 -- NA 2.5 NA ------Perdue Treatment Plant- imported raw water at SW06/11/2002 1250 ------NA -- NA -- -- E 0.0034 ------1.1 -- Sweetwater Reservoir near pump tower 09/17/2002 1000 -- -- E 0.1 -- NA -- NA ------1.4 -- Perdue Treatment Plant- finished water at SWR 09/17/2002 1130 -- -- E 61 -- NA -- NA ------Perdue Treatment Plant- imported raw water at SW09/17/2002 1240 -- -- E 0.1 E 0.4 NA -- NA -- E 0.2 E 0.006 ------E 0.5 -- SW River @ Low Flow Barrier 09/17/2002 1330 ------NA -- NA ------Table 6. Analysis for Wastewater compounds in Sweetwater and

[number below compound is the data parameter code, which is used in the USGS National Wa to uniquely identify a specific constituent; [LRL], laboratory reporting limit }; E, estimated value; all values are reported as micrograms per liter unless noted (mg/L)]

Monitor Method Disinfectant Fire Monitor Method Performanc Monitor Method Monitor Method Monitor Method Monitor Method Antimicrobial Retardant Performance e Performance Performance Performance Performance

Tri(2- Tri(2- Tri(dichloroiso Dacafluorobip Tributyl butoxyethyl) chloroethyl) propyl) 4-n-nonylphenol, BHT-d9, henyl Caffiene-c13 Fluoranthene- Bisphenol A- phosphate Triclosan phosphate phosphate phosphate surrogate surrogate surrogate surrogate d10, surrogate d3, surrogate Station Name [0.050, [0.040, [LRL] Date [0.050] 1.000] [0.500] 0.500] [0.100, 0.500] (percent) (percent) (percent) (percent) (percent) (percent) Sweetwater Reservoir near pump tower 12/04/2000 NA E 0.038 NA 0.067 -- 67 66 NA NA NA NA Perdue Treatment Plant- finished water at SWR 12/04/2000 NA E 0.034 NA E 0.033 -- 62 45 NA NA NA NA Perdue Treatment Plant- imported raw water at SW03/20/2001 ------NA NA 38 79 81 68 Loveland Reservoir near dam 03/21/2001 ------NA NA 44 83 82 81 Sweetwater Reservoir near pump tower 03/20/2002 ------E 0.044 -- NA NA Perdue Treatment Plant- finished water at SWR 03/20/2002 ------NA NA SW River @ Low Flow Barrier 03/20/2002 -- -- E 0.17 E 0.044 E 0.034 NA NA Sweetwater Reservoir near pump tower 06/11/2002 E 0.032 -- -- E 0.086 E 0.015 NA NA 34 83 73 39 Perdue Treatment Plant- finished water at SWR 06/11/2002 0.01 ------NA NA 45 78 66 14 Perdue Treatment Plant- imported raw water at SW06/11/2002 ------NA NA 39 84 74 30 Sweetwater Reservoir near pump tower 09/17/2002 -- -- E 0.1 E 0.2 -- NA NA 61 93 68 87 Perdue Treatment Plant- finished water at SWR 09/17/2002 ------NA NA 56 84 67 41 Perdue Treatment Plant- imported raw water at SW09/17/2002 ------NA NA 57 78 64 55 SW River @ Low Flow Barrier 09/17/2002 ------NA NA E values are those compounds that have been positively identified, but at concentrations below the established analytical reporting limits

2,4-D Atrazine Diuron Tebuthiuron Collection Collectio Station Name Date n Time ug/L ug/L ug/L ug/L LOVELAND RES NR DAM SITE 1 UPPER 06/12/2002 1120 <.02 <.007 0.03 <.02 LOVELAND RES NR DAM SITE 1 UPPER 09/18/2002 1110 <.02 <.007 0.02 <.02 LOVELAND RES NR DAM SITE 1 UPPER 02/12/2003 1100 <.02 <.007 0.02 <.02 LOVELAND RES NR DAM SITE 1 UPPER 06/18/2003 1040 <.02 <.007 0.02 <.02 LOVELAND RES NR DAM SITE 1 UPPER 08/20/2003 1050 <.02 <.007 E.02 <.02 LOVELAND RES NR DAM SITE 1 UPPER 08/20/2003 1100 <.02 <.007 <.01 <.02 LOVELAND RES NR DAM SITE 1 UPPER 12/17/2003 1030 <.02 <.007 0.02 <.02

PERDUE TRTMT PLANT FINISHED WATER A SWEETWATER RES 03/13/2000 1600 -- <.001 -- E.01 PERDUE TRTMT PLANT FINISHED WATER A SWEETWATER RES 03/20/2001 1430 -- E.003 -- <.02 PERDUE TRTMT PLANT FINISHED WATER A SWEETWATER RES 06/05/2001 1420 -- <.007 -- E.01 PERDUE TRTMT PLANT FINISHED WATER A SWEETWATER RES 06/11/2002 1230 <.02 <.007 0.03 <.02 PERDUE TRTMT PLANT FINISHED WATER A SWEETWATER RES 09/17/2002 1130 E.01 <.007 E.01 <.02 PERDUE TRTMT PLANT FINISHED WATER A SWEETWATER RES 12/11/2002 1400 <.02 E.005 E.01 <.02 PERDUE TRTMT PLANT FINISHED WATER A SWEETWATER RES 02/11/2003 1440 <.02 <.007 0.03 <.02 PERDUE TRTMT PLANT FINISHED WATER A SWEETWATER RES 04/09/2003 840 E.01 E.005 E.12 <.02 PERDUE TRTMT PLANT FINISHED WATER A SWEETWATER RES 06/17/2003 1550 E.01 <.007 E.04 <.02 PERDUE TRTMT PLANT FINISHED WATER A SWEETWATER RES 08/20/2003 1430 E.01 E.003 E.02 E.01 PERDUE TRTMT PLANT FINISHED WATER A SWEETWATER RES 10/15/2003 1240 0.03 E.005 <.01 <.02 PERDUE TRTMT PLANT FINISHED WATER A SWEETWATER RES 12/17/2003 1350 <.02 <.007 0.02 <.02 PERDUE TRTMT PLANT FINISHED WATER A SWEETWATER RES 02/18/2004 1140 <.02 E.002 E.04 <.02 PERDUE TRTMT PLANT FINISHED WATER A SWEETWATER RES 04/14/2004 930 0.02 <.007 0.1 <.02

PERDUE TRTMT PLANT IMPORTED RAW WATER A SWEETWATER 09/20/1999 1500 -- 0.004 -- <.01 PERDUE TRTMT PLANT IMPORTED RAW WATER A SWEETWATER 11/29/1999 1620 -- 0.005 -- <.01 PERDUE TRTMT PLANT IMPORTED RAW WATER A SWEETWATER 09/05/2000 1600 -- <.001 -- <.01 PERDUE TRTMT PLANT IMPORTED RAW WATER A SWEETWATER 03/20/2001 1500 -- E.003 -- M PERDUE TRTMT PLANT IMPORTED RAW WATER A SWEETWATER 09/06/2001 1300 -- 0.007 -- <.02 PERDUE TRTMT PLANT IMPORTED RAW WATER A SWEETWATER 06/11/2002 1250 <.02 E.004 0.06 E.01 PERDUE TRTMT PLANT IMPORTED RAW WATER A SWEETWATER 09/17/2002 1240 E.02 E.005 0.02 <.02 PERDUE TRTMT PLANT IMPORTED RAW WATER A SWEETWATER 12/11/2002 1420 E.01 E.005 0.02 <.02 PERDUE TRTMT PLANT IMPORTED RAW WATER A SWEETWATER 02/11/2003 1500 <.02 <.007 0.04 <.02 PERDUE TRTMT PLANT IMPORTED RAW WATER A SWEETWATER 04/09/2003 820 E.01 E.005 0.14 <.02 PERDUE TRTMT PLANT IMPORTED RAW WATER A SWEETWATER 10/15/2003 1300 0.02 <.009 0.02 <.006 PERDUE TRTMT PLANT IMPORTED RAW WATER A SWEETWATER 12/17/2003 1330 E.01 E.004 0.04 <.02 PERDUE TRTMT PLANT IMPORTED RAW WATER A SWEETWATER 02/18/2004 1200 <.02 E.003 E0.21 <.02 PERDUE TRTMT PLANT IMPORTED RAW WATER A SWEETWATER 04/14/2004 1220 E.01 E.003 0.18 <.02

SWEETWATER R A LOW FLOW BARRIER A SWEETWATER RES 05/03/1999 1645 -- <.001 -- E.01 SWEETWATER R A LOW FLOW BARRIER A SWEETWATER RES 01/29/2000 245 -- <.001 -- 0.01 SWEETWATER R A LOW FLOW BARRIER A SWEETWATER RES 03/13/2000 1500 -- <.001 -- 0.01 SWEETWATER R A LOW FLOW BARRIER A SWEETWATER RES 12/04/2000 1420 -- <.007 -- E.01 SWEETWATER R A LOW FLOW BARRIER A SWEETWATER RES 03/20/2001 1600 -- <.007 -- 0.02 SWEETWATER R A LOW FLOW BARRIER A SWEETWATER RES 06/05/2001 1500 -- <.007 -- E.01 SWEETWATER R A LOW FLOW BARRIER A SWEETWATER RES 09/06/2001 1615 -- <.007 -- E.01 SWEETWATER R A LOW FLOW BARRIER A SWEETWATER RES 12/10/2001 1420 -- <.007 -- E.01 2,4-D Atrazine Diuron Tebuthiuron Collection Collectio Station Name Date n Time ug/L ug/L ug/L ug/L SWEETWATER R A LOW FLOW BARRIER A SWEETWATER RES 03/20/2002 1200 0.03 <.007 0.32 E.01 SWEETWATER R A LOW FLOW BARRIER A SWEETWATER RES 06/11/2002 1340 <.02 <.007 0.02 <.02 SWEETWATER R A LOW FLOW BARRIER A SWEETWATER RES 09/17/2002 1330 <.02 <.007 E.01 <.02 SWEETWATER R A LOW FLOW BARRIER A SWEETWATER RES 02/11/2003 1440 <.02 <.007 E.01 <.02 SWEETWATER R A LOW FLOW BARRIER A SWEETWATER RES 04/09/2003 1530 <.02 <.007 <.01 0.02 SWEETWATER R A LOW FLOW BARRIER A SWEETWATER RES 06/18/2003 1400 <.02 <.007 E.02 <.02 SWEETWATER R A LOW FLOW BARRIER A SWEETWATER RES 08/20/2003 1400 <.02 <.007 <.01 E.01 SWEETWATER R A LOW FLOW BARRIER A SWEETWATER RES 12/17/2003 1300 <.02 <.007 0.02 <.02 SWEETWATER R A LOW FLOW BARRIER A SWEETWATER RES 02/18/2004 1510 <.02 <.007 E.02 0.02 SWEETWATER R A LOW FLOW BARRIER A SWEETWATER RES 04/14/2004 1020 <.02 <.007 <.02 E.01 SWEETWATER R A LOW FLOW BARRIER A SWEETWATER RES 07/14/2004 1010 ------

SWEETWATER RES CTR OF MIN POOL UPPER 12/04/2000 1250 -- <.007 -- E.01 SWEETWATER RES CTR OF MIN POOL UPPER 03/20/2001 1330 -- E.002 -- -- SWEETWATER RES CTR OF MIN POOL UPPER 09/06/2001 1020 -- <.007 -- -- SWEETWATER RES CTR OF MIN POOL UPPER 09/17/2002 1030 -- <.007 -- E.01 SWEETWATER RES CTR OF MIN POOL UPPER 06/17/2003 1210 E.02 <.007 E.05 <.02 SWEETWATER RES CTR OF MIN POOL UPPER 08/19/2003 1230 <.02 E.003 0.03 E.01 SWEETWATER RES CTR OF MIN POOL UPPER 08/19/2003 1250 <.02 <.007 0.04 E.01 SWEETWATER RES CTR OF MIN POOL UPPER 10/14/2003 1410 <.02 <.007 E.03 <.02

SWEETWATER RES E END RES FILL BNDRY UPPER 06/06/2001 1040 -- <.007 -- E.01 SWEETWATER RES E END RES FILL BNDRY UPPER 03/20/2002 1050 -- E.005 -- <.02 SWEETWATER RES E END RES FILL BNDRY UPPER 02/14/2003 1240 -- <.007 -- E.04 SWEETWATER RES E END RES FILL BNDRY UPPER 04/08/2003 1240 -- E.003 -- <.02 SWEETWATER RES E END RES FILL BNDRY UPPER 08/19/2003 1320 <.02 <.007 E.03 E.01 SWEETWATER RES E END RES FILL BNDRY UPPER 10/14/2003 1500 <.02 <.009 E.03 E.003 SWEETWATER RES E END RES FILL BNDRY UPPER 12/16/2003 1330 <.02 <.009 0.02 E.003

SWEETWATER RES NR PUMP TOWER UPPER 03/20/2001 1240 -- E.002 -- E.01 SWEETWATER RES NR PUMP TOWER UPPER 03/20/2001 1250 -- E.002 -- -- SWEETWATER RES NR PUMP TOWER UPPER 06/06/2001 1010 -- <.007 -- E.01 SWEETWATER RES NR PUMP TOWER UPPER 12/10/2001 1120 -- <.007 -- E.01 SWEETWATER RES NR PUMP TOWER UPPER 06/11/2002 930 <.02 <.007 0.04 <.02 SWEETWATER RES NR PUMP TOWER UPPER 09/17/2002 1000 <.02 <.007 0.03 E.01 SWEETWATER RES NR PUMP TOWER UPPER 02/14/2003 1130 <.02 <.007 0.02 <.02 SWEETWATER RES NR PUMP TOWER UPPER 04/08/2003 1100 -- <.007 -- E.01 SWEETWATER RES NR PUMP TOWER UPPER 06/17/2003 1130 E.02 <.007 0.04 <.02 SWEETWATER RES NR PUMP TOWER UPPER 08/19/2003 1130 <.02 E.003 E.03 E.01 SWEETWATER RES NR PUMP TOWER UPPER 08/19/2003 1150 <.02 <.007 E.04 <.02 SWEETWATER RES NR PUMP TOWER UPPER 10/14/2003 1330 <.02 <.007 E.03 <.02 SWEETWATER RES NR PUMP TOWER UPPER 12/16/2003 1200 <.02 <.007 0.02 <.02 SWEETWATER RES NR PUMP TOWER UPPER 02/17/2004 1540 <.02 E.002 E.04 <.02 SWEETWATER RES NR PUMP TOWER UPPER 04/13/2004 1120 E.02 <.007 0.11 E.01 Sweetwater Sweetwater Reservoir Sweetwater Reservoir Sweetwater Date Reservoir TOC CFE TOC DOC UV254 Reservoir SUVA 10/31/96 6.60 11/21/96 6.90 12/18/96 7.00 01/21/97 7.20 02/27/97 7.80 03/27/97 6.50 04/28/97 6.50 05/30/97 6.50 06/27/97 6.10 07/23/97 6.60 5.60 08/20/97 7.50 6.60 09/17/97 7.00 10/22/97 7.40 11/20/97 4.50 12/17/97 7.90 01/21/98 6.30 02/18/98 6.70 03/18/98 6.70 04/22/98 6.00 05/20/98 7.50 06/24/98 6.20 07/22/98 5.40 08/19/98 4.90 09/23/98 5.60 10/21/98 5.60 11/18/98 5.80 12/16/98 6.00 01/19/99 5.95 02/16/99 5.60 03/16/99 6.11 04/15/99 5.25 05/18/99 5.95 5.34 06/16/99 5.77 4.90 07/22/99 6.14 5.48 08/25/99 6.51 5.40 09/22/99 5.85 2.21 10/28/99 6.73 5.80 11/17/99 6.16 5.18 12/15/99 6.01 1.90 01/26/00 6.74 2.42 02/23/00 6.20 2.20 03/22/00 6.40 5.41 04/25/00 5.90 2.34 05/16/00 6.00 06/22/00 6.05 5.27 07/26/00 6.00 5.50 08/24/00 7.24 9.80 09/27/00 6.70 5.30 10/25/00 7.30 2.14 11/25/00 7.35 2.23 12/27/00 7.38 01/24/01 7.07 2.39 02/28/01 5.43 2.45 03/28/01 4.60 1.71 04/25/01 6.15 2.22 04/30/01 4.57 4.75 9.8 2.06 05/23/01 4.79 3.68 06/27/01 5.49 3.90 5.45 9.7 1.78 08/15/01 5.88 6.08 8.5 1.40 10/02/01 5.54 5.29 8.4 1.59 10/04/01 6.34 5.49 9.4 1.71 11/27/01 5.64 5.69 10.9 1.91 12/04/01 5.73 6.17 11.3 1.83 01/02/02 6.07 5.92 10.5 1.77 01/07/02 5.76 5.74 10.2 1.78 01/22/02 5.83 5.91 11.1 1.88 Sweetwater Sweetwater Reservoir Sweetwater Reservoir Sweetwater Date Reservoir TOC CFE TOC DOC UV254 Reservoir SUVA 01/29/02 5.51 2.13 5.63 10.5 1.87 02/05/02 5.73 5.74 10.3 1.80 02/12/02 6.03 5.87 10.3 1.75 02/19/02 6.38 6.29 9.8 1.56 02/26/02 5.35 2.18 5.58 9.5 1.70 02/27/02 4.73 03/05/02 4.82 4.80 9.2 1.92 03/12/02 4.92 6.02 9.3 1.54 03/19/02 4.61 5.54 9.0 1.62 03/26/02 5.01 3.97 5.70 9.2 1.61 03/27/02 4.99 04/02/02 5.20 5.14 9.2 1.79 04/16/02 4.96 4.52 8.8 1.95 04/23/02 5.91 6.88 9.0 1.31 04/30/02 5.46 2.94 5.69 8.9 1.56 05/07/02 5.53 5.39 8.9 1.65 05/13/02 5.47 5.83 9.1 1.56 05/20/02 5.68 5.81 8.9 1.53 05/22/02 5.75 5.10 8.6 1.69 05/28/02 4.62 4.70 8.9 1.89 06/04/02 4.99 5.00 8.7 1.74 06/11/02 4.82 5.10 8.8 1.73 06/18/02 4.46 4.57 9.0 1.97 06/25/02 5.29 4.19 4.66 8.7 1.87 06/27/02 4.09 07/02/02 5.76 5.67 9.0 1.59 07/09/02 4.96 5.53 9.2 1.66 07/16/02 4.80 4.74 9.2 1.94 07/18/02 4.97 5.12 9.3 1.82 07/23/02 5.80 4.98 9.0 1.81 07/30/02 6.48 3.10 5.16 9.4 1.82 08/06/02 4.68 5.04 9.4 1.86 08/13/02 6.44 5.87 10.0 1.70 08/20/02 5.23 3.29 5.07 10.0 1.97 08/27/02 5.56 5.01 10.1 2.02 09/04/02 5.40 5.28 9.8 1.85 09/10/02 5.60 6.06 10.3 1.70 09/17/02 5.87 6.22 10.6 1.70 09/24/02 5.44 3.17 5.25 10.1 1.92 10/01/02 5.63 5.55 10.4 1.88 10/08/02 5.44 5.14 10.3 2.00 10/15/02 5.72 5.27 10.0 1.90 10/22/02 5.47 5.10 10.0 1.96 10/29/02 4.98 1.87 4.72 9.7 2.05 11/05/02 4.82 9.7 2.01 11/12/02 5.53 5.20 10.0 1.92 11/19/02 5.60 5.01 10.0 1.99 11/26/02 4.78 2.14 4.72 9.1 1.93 12/03/02 5.12 4.85 9.1 1.88 12/10/02 5.53 5.38 9.0 1.67 12/17/02 5.20 5.07 9.5 1.87 12/23/02 7.04 5.53 9.1 1.64 12/31/02 5.66 2.11 5.41 9.4 1.74 01/08/03 4.68 4.79 9.1 1.90 01/14/03 5.75 5.42 9.2 1.70 01/21/03 5.01 4.44 9.2 2.07 01/29/03 5.14 2.31 5.14 8.8 1.71 02/04/03 4.68 4.21 8.1 1.92 02/11/03 5.12 4.70 8.2 1.74 02/18/03 4.56 4.29 8.3 1.93 02/25/03 4.57 3.66 4.47 8.4 1.88 03/04/03 4.54 4.55 9.0 1.98 03/10/03 4.83 4.45 8.7 1.95 03/17/03 4.51 4.55 8.8 1.94 03/25/03 4.49 2.24 4.64 8.9 1.92 04/01/03 4.74 4.88 8.9 1.82 Sweetwater Sweetwater Reservoir Sweetwater Reservoir Sweetwater Date Reservoir TOC CFE TOC DOC UV254 Reservoir SUVA 04/08/03 5.16 4.96 8.6 1.73 04/15/03 4.38 4.43 8.6 1.94 04/22/03 4.56 2.29 4.45 8.1 1.82 04/29/03 4.13 4.16 8.4 2.02 05/02/03 4.08 4.36 8.3 1.90 05/06/03 4.21 4.14 8.4 2.03 05/13/03 4.11 4.16 8.3 2.00 05/20/03 5.68 5.05 7.8 1.54 05/28/03 4.26 3.73 4.34 8.4 1.93 06/04/03 4.27 4.29 8.9 2.07 06/10/03 4.15 4.08 8.8 2.16 06/17/03 4.68 4.80 8.8 1.83 06/24/03 4.39 3.87 4.35 8.8 2.03 07/01/03 4.69 4.64 9.0 1.94 07/08/03 4.57 4.52 8.6 1.90 07/15/03 4.58 4.76 8.8 1.85 07/22/03 4.78 4.63 8.8 1.90 07/29/03 4.54 3.87 5.88 8.7 1.48 08/12/03 5.09 5.71 8.6 1.51 08/19/03 4.67 4.57 8.4 1.84 08/26/03 4.64 4.21 4.53 8.5 1.88 09/03/03 4.76 4.49 7.9 1.76 09/08/03 4.58 4.43 7.9 1.79 09/15/03 4.51 4.29 8.4 1.96 09/23/03 4.67 4.12 4.61 8.4 1.82 09/30/03 4.60 4.50 8.6 1.91 10/08/03 4.73 4.56 8.6 1.89 10/14/03 4.90 4.76 8.2 1.72 10/21/03 5.29 5.39 8.2 1.52 10/28/03 4.36 1.94 4.30 8.3 1.93 11/04/03 4.23 4.18 8.1 1.94 11/11/03 4.14 4.10 8.1 1.97 11/17/03 4.33 4.64 8.0 1.72 11/24/03 4.11 1.95 4.06 7.9 1.94 12/02/03 4.09 3.99 7.7 1.93 12/08/03 3.96 3.80 7.6 2.00 12/16/03 3.92 3.89 7.7 1.98 12/23/03 3.89 1.90 3.70 6.8 1.84 12/30/03 3.66 3.61 7.5 2.08 01/06/04 3.84 3.79 7.0 1.85 01/12/04 3.59 3.63 7.2 1.99 01/19/04 3.50 3.56 7.1 2.00 01/26/04 3.35 2.13 3.33 6.7 2.01 02/03/04 3.53 3.64 6.9 1.90 02/09/04 3.48 3.46 7.0 2.02 02/17/04 3.47 3.36 6.7 1.99 02/23/04 3.85 3.47 3.91 6.9 1.76 03/01/04 3.81 3.94 8.0 2.03 03/08/04 3.89 3.90 7.9 2.02 03/15/04 3.97 4.05 7.9 1.95 03/22/04 4.03 3.77 8.1 2.15 03/29/04 4.17 4.33 8.2 1.89 03/31/04 4.29 3.62 04/06/04 4.02 3.99 8.8 2.20 04/13/04 4.29 4.18 8.7 2.08 04/20/04 4.05 4.07 8.7 2.14 04/21/04 4.06 3.34 04/27/04 3.94 4.05 8.0 1.98 05/03/04 4.06 3.96 8.7 2.20 05/11/04 4.09 3.78 4.17 7.9 1.89 05/17/04 4.08 4.17 8.3 1.99 05/25/04 3.67 3.87 7.7 1.99 06/08/04 4.71 3.76 7.5 1.99 06/14/04 5.60 4.50 7.8 1.73 06/22/04 3.97 7.8 1.96 06/29/04 4.23 3.41 Sweetwater Sweetwater Reservoir Sweetwater Reservoir Sweetwater Date Reservoir TOC CFE TOC DOC UV254 Reservoir SUVA 07/07/04 07/12/04 5.19 4.57 7.6 1.66 07/19/04 4.10 3.72 3.97 7.2 1.81 07/27/04 4.66 4.84 7.6 1.57 08/03/04 5.00 7.4 1.48 08/10/04 4.80 4.22 7.5 1.78 08/16/04 4.14 4.09 7.2 1.76 08/24/04 4.36 3.77 4.47 7.5 1.68 08/30/04 4.17 4.16 7.7 1.85 09/08/04 4.33 4.60 7.9 1.72 09/13/04 4.33 4.31 7.6 1.76 09/20/04 3.95 4.32 8.1 1.87 09/27/04 4.55 4.09 4.33 7.9 1.83 10/05/04 4.70 4.69 8.2 1.75 10/12/04 4.10 4.11 8.6 2.09 10/19/04 4.33 4.19 8.0 1.91 10/26/04 4.10 1.85 3.93 8.9 2.26 11/01/04 4.48 4.43 11.0 2.48 11/08/04 4.31 4.27 10.4 2.44 11/15/04 4.69 4.53 10.0 2.21 11/22/04 4.56 4.61 10.1 2.19 11/29/04 4.67 1.83 4.68 9.8 2.09 12/07/04 4.17 4.30 9.7 2.26 12/12/04 4.19 4.16 9.6 2.31 12/21/04 4.43 4.61 9.8 2.13 12/28/04 4.28 2.10 4.16 9.7 2.33 01/03/05 4.34 4.24 9.9 2.34 01/11/05 4.56 4.52 11.3 2.50 01/17/05 4.86 4.88 11.9 2.44 01/24/05 5.28 2.40 5.29 14.7 2.78 01/31/05 5.30 5.27 14.7 2.79 02/14/05 5.52 5.60 14.4 2.57 02/23/05 6.05 4.96 6.03 17.4 2.88 03/01/05 6.13 03/07/05 6.26 4.96 6.21 17.8 2.87 03/14/05 6.06 4.96 6.07 17.2 2.84 03/28/05 7.91 6.38 7.86 23.4 2.98 04/12/05 7.19 4.98 7.34 22.2 3.02 04/19/05 7.42 3.88 7.12 21.2 2.98 04/26/05 7.76 7.78 22.1 2.84 05/02/05 7.67 5.73 7.81 21.6 2.77 05/10/05 7.44 5.67 7.89 20.8 2.64 05/16/05 6.98 5.98 7.01 19.8 2.83 05/23/05 6.65 4.02 6.90 18.8 2.72 06/01/05 7.51 4.51 7.68 21.5 2.80 06/07/05 7.66 6.39 7.74 21.2 2.74 06/13/05 7.51 6.30 7.61 21.3 2.80 06/21/05 7.39 6.15 6.97 20.7 2.97 06/28/05 7.38 6.81 7.27 20.2 2.78 07/06/05 7.15 6.32 7.15 20.2 2.82 07/12/05 7.43 6.79 7.47 19.8 2.65 07/18/05 8.25 6.34 8.08 19.5 2.41 07/26/05 7.70 6.62 7.18 18.2 2.53 08/02/05 7.73 6.23 7.62 18.9 2.48 08/09/05 7.76 6.39 7.81 18.4 2.36 08/16/05 8.13 6.53 7.79 18.2 2.34 08/23/05 7.95 6.50 8.06 18.0 2.23 08/30/05 7.76 6.93 7.77 17.5 2.25 09/07/05 7.81 6.73 7.91 16.9 2.14 09/12/05 7.60 2.62 7.53 17.4 2.31 09/19/05 7.77 2.63 7.54 17.6 2.33 09/26/05 7.71 2.95 7.67 16.9 2.20 10/04/05 8.08 6.73 7.68 17.2 2.24 10/11/05 7.69 6.44 7.35 17.2 2.34 10/18/05 7.69 6.14 7.46 17.2 2.31 10/25/05 7.33 5.96 7.36 16.8 2.28 Sweetwater Sweetwater Reservoir Sweetwater Reservoir Sweetwater Date Reservoir TOC CFE TOC DOC UV254 Reservoir SUVA 11/01/05 7.61 6.14 7.46 17.0 2.28 11/07/05 7.33 6.05 7.28 16.6 2.28 11/14/05 8.01 5.58 8.05 17.0 2.11 11/21/05 7.55 5.70 7.41 16.5 2.23 11/28/05 7.83 5.67 7.82 16.7 2.14 12/06/05 7.40 6.14 7.40 17.0 2.30 12/13/05 7.25 2.11 7.16 16.3 2.28 12/21/05 7.30 2.12 7.06 16.2 2.29 12/28/05 6.36 1.77 6.18 15.5 2.51 01/03/06 7.03 1.97 7.02 16.3 2.32 01/09/06 7.18 5.54 7.19 16.4 2.28 01/16/06 7.49 6.12 7.93 18.4 2.32 01/23/06 7.12 3.29 7.09 18.5 2.61 01/30/06 7.44 2.28 7.19 18.7 2.60 02/07/06 7.35 2.33 7.54 18.5 2.45 02/14/06 7.40 2.20 7.22 18.6 2.58 02/21/06 7.26 2.19 7.19 18.9 2.63 02/28/06 7.25 2.30 7.17 18.0 2.51 03/07/06 8.12 6.32 7.94 17.8 2.24 03/14/06 7.14 5.58 7.03 17.9 2.55 03/21/06 7.10 5.71 7.01 16.9 2.41 03/28/06 6.86 2.16 6.85 17.4 2.54 04/03/06 7.15 2.31 7.12 17.4 2.44 04/11/06 7.73 2.29 7.39 17.3 2.34 04/17/06 6.55 2.28 6.07 15.1 2.49 04/25/06 7.06 2.16 7.22 17.2 2.38 05/03/06 7.36 2.32 7.50 17.1 2.28 05/09/06 6.99 2.35 7.20 17.1 2.37 05/16/06 7.18 5.99 7.00 17.0 2.43 05/23/06 7.33 6.06 7.21 16.9 2.34 05/30/06 6.89 6.41 6.93 17.1 2.47 06/06/06 7.68 5.98 7.73 16.7 2.16 06/13/06 7.45 2.13 7.42 16.5 2.22 06/20/06 7.85 2.12 7.58 16.5 2.18 06/27/06 7.29 1.93 7.06 16.4 2.32 07/03/06 7.90 6.26 8.12 16.2 2.00 07/11/06 7.59 5.94 7.29 16.0 2.20 07/18/06 7.00 5.81 6.92 16.5 2.38 07/25/06 7.39 6.14 7.92 16.5 2.08 08/01/06 8.14 6.15 7.40 16.0 2.16 08/08/06 7.11 5.48 6.92 16.2 2.34 08/15/06 7.58 6.07 7.21 16.0 2.22 08/22/06 7.58 6.19 7.27 15.7 2.16 09/05/06 7.74 6.19 7.32 15.5 2.12 09/12/06 7.92 6.14 7.22 15.2 2.11 09/19/06 7.94 6.16 7.13 15.5 2.18 09/26/06 8.13 5.95 7.16 15.6 2.18 10/03/06 7.58 6.33 7.30 15.6 2.14 10/10/06 7.49 6.08 7.22 15.4 2.13 10/17/06 7.42 5.90 7.28 15.9 2.19 10/24/06 7.55 6.27 7.22 16.1 2.23 10/31/06 7.76 6.30 7.63 16.3 2.14 11/07/06 7.78 1.91 7.43 16.3 2.19 11/14/06 7.92 1.94 7.49 17.2 2.30 11/21/06 7.51 1.94 7.30 16.1 2.21 11/28/06 7.33 1.95 7.14 16.1 2.26 12/05/06 7.33 1.80 7.15 15.8 2.21 12/12/06 7.43 2.00 7.07 15.6 2.21 12/19/06 7.43 1.95 7.46 16.0 2.14 12/27/06 7.96 2.02 7.52 15.7 2.09 min 3.4 1.7 3.3 6.7 1.3 max 8.2 9.8 8.1 23.4 3.0 avg 5.8 4.2 5.7 12.0 2.1 median 5.7 4.0 5.3 9.7 2.0 95th perc 7.8 2.1 4.2 7.9 2.8 Quarter Date Sample Point: Area TTHMs MA QA RAA 1-1996 1/8/1996 4578 Paseo De La Vista, Bonita Bonita 73.6 1-1996 1/8/1996 5747 Pray Street, Bonita Bonita 80.8 1-1996 1/8/1996 Lynwood and Holly Way, Bonita Bonita 79.6 1-1996 1/8/1996 700 Block of F Street, C.V. C.V. 71.3 1-1996 1/8/1996 I Street and Colorado, C.V. C.V. 75.2 1-1996 1/8/1996 109 16th Street, N.C. N.C. 72.7 1-1996 1/8/1996 2323 Division Street, N.C. N.C. 8.5 1-1996 1/8/1996 El Toyon Park, N.C. N.C. 9.4 1-1996 1/8/1996 Plaza and Manchester, N.C. N.C. 31.0 1-1996 1/8/1996 Shell and Lou Avenue, N.C. N.C. 47.4 55.0 1-1996 2/12/1996 4578 Paseo De La Vista, Bonita Bonita 90.9 1-1996 2/12/1996 5747 Pray Street, Bonita Bonita 87.4 1-1996 2/12/1996 Lynwood and Holly Way, Bonita Bonita 94.2 1-1996 2/12/1996 700 Block of F Street, C.V. C.V. 90.5 1-1996 2/12/1996 I Street and Colorado, C.V. C.V. 85.3 1-1996 2/12/1996 109 16th Street, N.C. N.C. 85.0 1-1996 2/12/1996 2323 Division Street, N.C. N.C. 6.9 1-1996 2/12/1996 El Toyon Park, N.C. N.C. 7.6 1-1996 2/12/1996 Plaza and Manchester, N.C. N.C. 22.5 1-1996 2/12/1996 Shell and Lou Avenue, N.C. N.C. 25.8 59.6 1-1996 3/11/1996 4578 Paseo De La Vista, Bonita Bonita 90.9 1-1996 3/11/1996 5747 Pray Street, Bonita Bonita 87.9 1-1996 3/11/1996 Lynwood and Holly Way, Bonita Bonita 87.0 1-1996 3/11/1996 700 Block of F Street, C.V. C.V. 88.1 1-1996 3/11/1996 I Street and Colorado, C.V. C.V. 89.6 1-1996 3/11/1996 109 16th Street, N.C. N.C. 95.1 1-1996 3/11/1996 2323 Division Street, N.C. N.C. 8.0 1-1996 3/11/1996 El Toyon Park, N.C. N.C. 8.0 1-1996 3/11/1996 Plaza and Manchester, N.C. N.C. 34.5 1-1996 3/11/1996 Shell and Lou Avenue, N.C. N.C. 35.0 62.4 59.0 2-1996 5/14/1996 4578 Paseo De La Vista, Bonita Bonita 93.2 2-1996 5/14/1996 5747 Pray Street, Bonita Bonita 89.0 2-1996 5/14/1996 Lynwood and Holly Way, Bonita Bonita 92.9 2-1996 5/14/1996 700 Block of F Street, C.V. C.V. 87.8 2-1996 5/14/1996 I Street and Colorado, C.V. C.V. 87.7 2-1996 5/14/1996 109 16th Street, N.C. N.C. 87.3 2-1996 5/14/1996 2323 Division Street, N.C. N.C. 28.3 2-1996 5/14/1996 El Toyon Park, N.C. N.C. 12.2 2-1996 5/14/1996 Plaza and Manchester, N.C. N.C. 21.5 2-1996 5/14/1996 Shell and Lou Avenue, N.C. N.C. 42.5 64.2 2-1996 6/10/1996 4578 Paseo De La Vista, Bonita Bonita 69.8 2-1996 6/10/1996 5747 Pray Street, Bonita Bonita 66.7 2-1996 6/10/1996 Lynwood and Holly Way, Bonita Bonita 69.7 2-1996 6/10/1996 700 Block of F Street, C.V. C.V. 65.9 2-1996 6/10/1996 I Street and Colorado, C.V. C.V. 65.7 2-1996 6/10/1996 109 16th Street, N.C. N.C. 65.4 2-1996 6/10/1996 2323 Division Street, N.C. N.C. 20.9 2-1996 6/10/1996 El Toyon Park, N.C. N.C. 9.0 2-1996 6/10/1996 Plaza and Manchester, N.C. N.C. 15.7 2-1996 6/10/1996 Shell and Lou Avenue, N.C. N.C. 31.1 48.0 56.1 3-1996 7/22/1996 4578 Paseo De La Vista, Bonita Bonita 89.7 3-1996 7/22/1996 5747 Pray Street, Bonita Bonita 82.7 3-1996 7/22/1996 Lynwood and Holly Way, Bonita Bonita 79.2 3-1996 7/22/1996 700 Block of F Street, C.V. C.V. 80.0 3-1996 7/22/1996 I Street and Colorado, C.V. C.V. 81.7 3-1996 7/22/1996 109 16th Street, N.C. N.C. 79.4 3-1996 7/22/1996 2323 Division Street, N.C. N.C. 25.7 3-1996 7/22/1996 El Toyon Park, N.C. N.C. 7.2 3-1996 7/22/1996 Plaza and Manchester, N.C. N.C. 16.2 3-1996 7/22/1996 Shell and Lou Avenue, N.C. N.C. 29.4 57.1 3-1996 8/12/1996 4578 Paseo De La Vista, Bonita Bonita 107.1 3-1996 8/12/1996 5747 Pray Street, Bonita Bonita 99.2 3-1996 8/12/1996 Lynwood and Holly Way, Bonita Bonita 95.9 3-1996 8/12/1996 700 Block of F Street, C.V. C.V. 98.6 3-1996 8/12/1996 I Street and Colorado, C.V. C.V. 100.7 3-1996 8/12/1996 109 16th Street, N.C. N.C. 93.6 3-1996 8/12/1996 2323 Division Street, N.C. N.C. 28.8 3-1996 8/12/1996 El Toyon Park, N.C. N.C. 75.3 3-1996 8/12/1996 Plaza and Manchester, N.C. N.C. 55.6 3-1996 8/12/1996 Shell and Lou Avenue, N.C. N.C. 42.9 79.8 3-1996 9/17/1996 4578 Paseo De La Vista, Bonita Bonita 113.7 3-1996 9/17/1996 5747 Pray Street, Bonita Bonita 65.7 3-1996 9/17/1996 700 Block of F Street, C.V. C.V. 81.3 3-1996 9/17/1996 I Street and Colorado, C.V. C.V. 79.9 3-1996 9/17/1996 Oxford Street at Judson, C.V. C.V. 82.5 3-1996 9/17/1996 109 16th Street, N.C. N.C. 72.1 3-1996 9/17/1996 2323 Division Street, N.C. N.C. 25.2 3-1996 9/17/1996 El Toyon Park, N.C. N.C. 10.7 3-1996 9/17/1996 Plaza and Manchester, N.C. N.C. 23.9 3-1996 9/17/1996 Shell and Lou Avenue, N.C. N.C. 8.8 56.4 64.4 4-1996 11/22/1996 4578 Paseo De La Vista, Bonita Bonita 43.4 4-1996 11/22/1996 5747 Pray Street, Bonita Bonita 44.5 4-1996 11/22/1996 Lynwood and Holly Way, Bonita Bonita 44.0 4-1996 11/22/1996 700 Block of F Street, C.V. C.V. 44.2 4-1996 11/22/1996 I Street and Colorado, C.V. C.V. 43.5 4-1996 11/22/1996 109 16th Street, N.C. N.C. 42.9 4-1996 11/22/1996 2323 Division Street, N.C. N.C. 15.4 4-1996 11/22/1996 El Toyon Park, N.C. N.C. 7.7 4-1996 11/22/1996 Plaza and Manchester, N.C. N.C. 17.1 4-1996 11/22/1996 Shell and Lou Avenue, N.C. N.C. 20.9 32.4 4-1996 12/9/1996 4578 Paseo De La Vista, Bonita Bonita 42.4 4-1996 12/9/1996 5747 Pray Street, Bonita Bonita 42.1 4-1996 12/9/1996 Lynwood and Holly Way, Bonita Bonita 39.3 4-1996 12/9/1996 700 Block of F Street, C.V. C.V. 41.3 4-1996 12/9/1996 I Street and Colorado, C.V. C.V. 41.2 4-1996 12/9/1996 109 16th Street, N.C. N.C. 40.2 4-1996 12/9/1996 2323 Division Street, N.C. N.C. 7.0 4-1996 12/9/1996 El Toyon Park, N.C. N.C. 6.6 Quarter Date Sample Point: Area TTHMs MA QA RAA 4-1996 12/9/1996 Plaza and Manchester, N.C. N.C. 17.1 4-1996 12/9/1996 Shell and Lou Avenue, N.C. N.C. 24.9 30.2 31.3 52.7 1-1997 1/13/1997 4578 Paseo De La Vista, Bonita Bonita 42.4 1-1997 1/13/1997 5747 Pray Street, Bonita Bonita 42.7 1-1997 1/13/1997 Lynwood and Holly Way, Bonita Bonita 42.0 1-1997 1/13/1997 700 Block of F Street, C.V. C.V. 41.9 1-1997 1/13/1997 I Street and Colorado, C.V. C.V. 40.9 1-1997 1/13/1997 109 16th Street, N.C. N.C. 39.9 1-1997 1/13/1997 2323 Division Street, N.C. N.C. 14.0 1-1997 1/13/1997 El Toyon Park, N.C. N.C. 10.3 1-1997 1/13/1997 Plaza and Manchester, N.C. N.C. 16.6 1-1997 1/13/1997 Shell and Lou Avenue, N.C. N.C. 24.4 31.5 1-1997 2/10/1997 4578 Paseo De La Vista, Bonita Bonita 82.7 1-1997 2/10/1997 5747 Pray Street, Bonita Bonita 91.9 1-1997 2/10/1997 Lynwood and Holly Way, Bonita Bonita 82.3 1-1997 2/10/1997 700 Block of F Street, C.V. C.V. 82.5 1-1997 2/10/1997 I Street and Colorado, C.V. C.V. 80.4 1-1997 2/10/1997 109 16th Street, N.C. N.C. 82.2 1-1997 2/10/1997 2323 Division Street, N.C. N.C. 7.5 1-1997 2/10/1997 El Toyon Park, N.C. N.C. 7.2 1-1997 2/10/1997 Plaza and Manchester, N.C. N.C. 20.3 1-1997 2/10/1997 Shell and Lou Avenue, N.C. N.C. 33.9 57.1 1-1997 3/10/1997 4578 Paseo De La Vista, Bonita Bonita 43.5 1-1997 3/10/1997 5747 Pray Street, Bonita Bonita 42.7 1-1997 3/10/1997 Lynwood and Holly Way, Bonita Bonita 47.0 1-1997 3/10/1997 700 Block of F Street, C.V. C.V. 45.2 1-1997 3/10/1997 I Street and Colorado, C.V. C.V. 41.8 1-1997 3/10/1997 109 16th Street, N.C. N.C. 41.1 1-1997 3/10/1997 2323 Division Street, N.C. N.C. 5.7 1-1997 3/10/1997 El Toyon Park, N.C. N.C. 6.1 1-1997 3/10/1997 Plaza and Manchester, N.C. N.C. 17.1 1-1997 3/10/1997 Shell and Lou Avenue, N.C. N.C. 23.3 31.3 40.0 47.9 2-1997 4/14/1997 4578 Paseo De La Vista, Bonita Bonita 52.2 2-1997 4/14/1997 5747 Pray Street, Bonita Bonita 51.7 2-1997 4/14/1997 Lynwood and Holly Way, Bonita Bonita 50.6 2-1997 4/14/1997 700 Block of F Street, C.V. C.V. 52.1 2-1997 4/14/1997 I Street and Colorado, C.V. C.V. 51.8 2-1997 4/14/1997 109 16th Street, N.C. N.C. 48.6 2-1997 4/14/1997 2323 Division Street, N.C. N.C. 4.8 2-1997 4/14/1997 El Toyon Park, N.C. N.C. 6.0 2-1997 4/14/1997 Plaza and Manchester, N.C. N.C. 17.8 2-1997 4/14/1997 Shell and Lou Avenue, N.C. N.C. 17.2 35.3 2-1997 5/12/1997 4578 Paseo De La Vista, Bonita Bonita 59.9 2-1997 5/12/1997 5747 Pray Street, Bonita Bonita 53.9 2-1997 5/12/1997 Lynwood and Holly Way, Bonita Bonita 65.2 2-1997 5/12/1997 700 Block of F Street, C.V. C.V. 55.2 2-1997 5/12/1997 I Street and Colorado, C.V. C.V. 53.5 2-1997 5/12/1997 109 16th Street, N.C. N.C. 53.3 2-1997 5/12/1997 2323 Division Street, N.C. N.C. 13.8 2-1997 5/12/1997 El Toyon Park, N.C. N.C. 22.6 2-1997 5/12/1997 Plaza and Manchester, N.C. N.C. 17.9 2-1997 5/12/1997 Shell and Lou Avenue, N.C. N.C. 21.3 41.7 2-1997 6/9/1997 4578 Paseo De La Vista, Bonita Bonita 83.2 2-1997 6/9/1997 5747 Pray Street, Bonita Bonita 86.0 2-1997 6/9/1997 Lynwood and Holly Way, Bonita Bonita 78.9 2-1997 6/9/1997 700 Block of F Street, C.V. C.V. 77.8 2-1997 6/9/1997 I Street and Colorado, C.V. C.V. 76.2 2-1997 6/9/1997 109 16th Street, N.C. N.C. 77.5 2-1997 6/9/1997 2323 Division Street, N.C. N.C. 4.6 2-1997 6/9/1997 El Toyon Park, N.C. N.C. 5.5 2-1997 6/9/1997 Plaza and Manchester, N.C. N.C. 20.6 2-1997 6/9/1997 Shell and Lou Avenue, N.C. N.C. 48.0 55.8 44.3 45.0 3-1997 8/11/1997 4578 Paseo De La Vista, Bonita Bonita 82.5 3-1997 8/11/1997 5747 Pray Street, Bonita Bonita 85.7 3-1997 8/11/1997 Lynwood and Holly Way, Bonita Bonita 96.5 3-1997 8/11/1997 700 Block of F Street, C.V. C.V. 92.7 3-1997 8/11/1997 I Street and Colorado, C.V. C.V. 85.1 3-1997 8/11/1997 109 16th Street, N.C. N.C. 79.2 3-1997 8/11/1997 2323 Division Street, N.C. N.C. 8.0 3-1997 8/11/1997 El Toyon Park, N.C. N.C. 45.8 3-1997 8/11/1997 Plaza and Manchester, N.C. N.C. 49.9 3-1997 8/11/1997 Shell and Lou Avenue, N.C. N.C. 38.8 66.4 3-1997 9/8/1997 4578 Paseo De La Vista, Bonita Bonita 83.1 3-1997 9/8/1997 5747 Pray Street, Bonita Bonita 84.2 3-1997 9/8/1997 Lynwood and Holly Way, Bonita Bonita 84.8 3-1997 9/8/1997 700 Block of F Street, C.V. C.V. 83.6 3-1997 9/8/1997 I Street and Colorado, C.V. C.V. 81.8 3-1997 9/8/1997 109 16th Street, N.C. N.C. 78.4 3-1997 9/8/1997 2323 Division Street, N.C. N.C. 6.8 3-1997 9/8/1997 El Toyon Park, N.C. N.C. 7.1 3-1997 9/8/1997 Plaza and Manchester, N.C. N.C. 31.1 3-1997 9/8/1997 Shell and Lou Avenue, N.C. N.C. 33.7 57.5 61.9 44.4 4-1997 10/14/1997 4578 Paseo De La Vista, Bonita Bonita 88.5 4-1997 10/14/1997 5747 Pray Street, Bonita Bonita 84.9 4-1997 10/14/1997 Lynwood and Holly Way, Bonita Bonita 93.6 4-1997 10/14/1997 700 Block of F Street, C.V. C.V. 86.2 4-1997 10/14/1997 I Street and Colorado, C.V. C.V. 87.2 4-1997 10/14/1997 109 16th Street, N.C. N.C. 83.6 4-1997 10/14/1997 2323 Division Street, N.C. N.C. 33.0 4-1997 10/14/1997 El Toyon Park, N.C. N.C. 15.4 4-1997 10/14/1997 Plaza and Manchester, N.C. N.C. 27.5 4-1997 10/14/1997 Shell and Lou Avenue, N.C. N.C. 45.3 64.5 4-1997 11/10/1997 4578 Paseo De La Vista, Bonita Bonita 74.6 4-1997 11/10/1997 5747 Pray Street, Bonita Bonita 77.7 4-1997 11/10/1997 Lynwood and Holly Way, Bonita Bonita 70.5 4-1997 11/10/1997 700 Block of F Street, C.V. C.V. 72.4 4-1997 11/10/1997 I Street and Colorado, C.V. C.V. 72.7 4-1997 11/10/1997 109 16th Street, N.C. N.C. 68.4 Quarter Date Sample Point: Area TTHMs MA QA RAA 4-1997 11/10/1997 2323 Division Street, N.C. N.C. 5.4 4-1997 11/10/1997 El Toyon Park, N.C. N.C. 5.3 4-1997 11/10/1997 Plaza and Manchester, N.C. N.C. 16.1 4-1997 11/10/1997 Shell and Lou Avenue, N.C. N.C. 31.8 49.5 4-1997 12/8/1997 4578 Paseo De La Vista, Bonita Bonita 37.4 4-1997 12/8/1997 5747 Pray Street, Bonita Bonita 38.8 4-1997 12/8/1997 Lynwood and Holly Way, Bonita Bonita 35.9 4-1997 12/8/1997 700 Block of F Street, C.V. C.V. 34.3 4-1997 12/8/1997 I Street and Colorado, C.V. C.V. 34.2 4-1997 12/8/1997 109 16th Street, N.C. N.C. 36.0 4-1997 12/8/1997 2323 Division Street, N.C. N.C. 16.4 4-1997 12/8/1997 El Toyon Park, N.C. N.C. 36.0 4-1997 12/8/1997 Plaza and Manchester, N.C. N.C. 20.0 4-1997 12/8/1997 Shell and Lou Avenue, N.C. N.C. 28.8 31.8 48.6 48.7 1-1998 1/12/1998 4578 Paseo De La Vista, Bonita Bonita 65.3 1-1998 1/12/1998 5747 Pray Street, Bonita Bonita 81.1 1-1998 1/12/1998 Lynwood and Holly Way, Bonita Bonita 71.7 1-1998 1/12/1998 700 Block of F Street, C.V. C.V. 68.8 1-1998 1/12/1998 I Street and Colorado, C.V. C.V. 65.7 1-1998 1/12/1998 109 16th Street, N.C. N.C. 64.5 1-1998 1/12/1998 2323 Division Street, N.C. N.C. 69.2 1-1998 1/12/1998 El Toyon Park, N.C. N.C. 66.8 1-1998 1/12/1998 Plaza and Manchester, N.C. N.C. 76.5 1-1998 1/12/1998 Shell and Lou Avenue, N.C. N.C. 73.1 70.3 1-1998 2/9/1998 4578 Paseo De La Vista, Bonita Bonita 39.4 1-1998 2/9/1998 5747 Pray Street, Bonita Bonita 40.6 1-1998 2/9/1998 Lynwood and Holly Way, Bonita Bonita 36.0 1-1998 2/9/1998 700 Block of F Street, C.V. C.V. 37.7 1-1998 2/9/1998 I Street and Colorado, C.V. C.V. 37.6 1-1998 2/9/1998 109 16th Street, N.C. N.C. 38.1 1-1998 2/9/1998 2323 Division Street, N.C. N.C. 15.2 1-1998 2/9/1998 El Toyon Park, N.C. N.C. 15.0 1-1998 2/9/1998 Plaza and Manchester, N.C. N.C. 20.2 1-1998 2/9/1998 Shell and Lou Avenue, N.C. N.C. 18.8 29.9 1-1998 3/9/1998 4578 Paseo De La Vista, Bonita Bonita 54.2 1-1998 3/9/1998 5747 Pray Street, Bonita Bonita 75.4 1-1998 3/9/1998 Lynwood and Holly Way, Bonita Bonita 46.2 1-1998 3/9/1998 700 Block of F Street, C.V. C.V. 81.5 1-1998 3/9/1998 I Street and Colorado, C.V. C.V. 80.2 1-1998 3/9/1998 109 16th Street, N.C. N.C. 84.3 1-1998 3/9/1998 2323 Division Street, N.C. N.C. 7.7 1-1998 3/9/1998 El Toyon Park, N.C. N.C. 7.3 1-1998 3/9/1998 Plaza and Manchester, N.C. N.C. 21.1 1-1998 3/9/1998 Shell and Lou Avenue, N.C. N.C. 37.5 49.5 49.9 51.2 2-1998 4/13/1998 4578 Paseo De La Vista, Bonita Bonita 117.3 2-1998 4/13/1998 5747 Pray Street, Bonita Bonita 111.9 2-1998 4/13/1998 Lynwood and Holly Way, Bonita Bonita 109.3 2-1998 4/13/1998 700 Block of F Street, C.V. C.V. 108.7 2-1998 4/13/1998 I Street and Colorado, C.V. C.V. 110.2 2-1998 4/13/1998 109 16th Street, N.C. N.C. 113.8 2-1998 4/13/1998 2323 Division Street, N.C. N.C. 5.2 2-1998 4/13/1998 El Toyon Park, N.C. N.C. 32.5 2-1998 4/13/1998 Plaza and Manchester, N.C. N.C. 13.0 2-1998 4/13/1998 Shell and Lou Avenue, N.C. N.C. 20.6 74.3 2-1998 6/15/1998 4578 Paseo De La Vista, Bonita Bonita 94.1 2-1998 6/15/1998 5747 Pray Street, Bonita Bonita 96.9 2-1998 6/15/1998 Lynwood and Holly Way, Bonita Bonita 88.8 2-1998 6/15/1998 700 Block of F Street, C.V. C.V. 95.7 2-1998 6/15/1998 I Street and Colorado, C.V. C.V. 89.6 2-1998 6/15/1998 109 16th Street, N.C. N.C. 95.0 2-1998 6/15/1998 2323 Division Street, N.C. N.C. 82.8 2-1998 6/15/1998 El Toyon Park, N.C. N.C. 5.4 2-1998 6/15/1998 Plaza and Manchester, N.C. N.C. 93.4 2-1998 6/15/1998 Shell and Lou Avenue, N.C. N.C. 89.8 83.2 78.7 59.8 3-1998 7/13/1998 4578 Paseo De La Vista, Bonita Bonita 94.8 3-1998 7/13/1998 5747 Pray Street, Bonita Bonita 94.3 3-1998 7/13/1998 Lynwood and Holly Way, Bonita Bonita 90.9 3-1998 7/13/1998 700 Block of F Street, C.V. C.V. 84.7 3-1998 7/13/1998 I Street and Colorado, C.V. C.V. 86.4 3-1998 7/13/1998 109 16th Street, N.C. N.C. 88.7 3-1998 7/13/1998 2323 Division Street, N.C. N.C. 83.9 3-1998 7/13/1998 El Toyon Park, N.C. N.C. 80.1 3-1998 7/13/1998 Plaza and Manchester, N.C. N.C. 95.7 3-1998 7/13/1998 Shell and Lou Avenue, N.C. N.C. 91.1 89.1 3-1998 8/10/1998 4578 Paseo De La Vista, Bonita Bonita 119.8 3-1998 8/10/1998 5747 Pray Street, Bonita Bonita 113.4 3-1998 8/10/1998 Lynwood and Holly Way, Bonita Bonita 91.5 3-1998 8/10/1998 700 Block of F Street, C.V. C.V. 82.7 3-1998 8/10/1998 I Street and Colorado, C.V. C.V. 86.0 3-1998 8/10/1998 109 16th Street, N.C. N.C. 114.9 3-1998 8/10/1998 El Toyon Park, N.C. N.C. 6.4 3-1998 8/10/1998 NC Wells Tank N.C. 6.1 3-1998 8/10/1998 Newell at Las Palmas N.C. 111.0 3-1998 8/10/1998 Plaza and Manchester, N.C. N.C. 122.9 85.5 3-1998 9/14/1998 4578 Paseo De La Vista, Bonita Bonita 84.9 3-1998 9/14/1998 5747 Pray Street, Bonita Bonita 111.4 3-1998 9/14/1998 Lynwood and Holly Way, Bonita Bonita 111.3 3-1998 9/14/1998 700 Block of F Street, C.V. C.V. 91.9 3-1998 9/14/1998 I Street and Colorado, C.V. C.V. 101.3 3-1998 9/14/1998 109 16th Street, N.C. N.C. 79.4 3-1998 9/14/1998 El Toyon Park, N.C. N.C. 5.7 3-1998 9/14/1998 NC Wells Tank N.C. 0.0 3-1998 9/14/1998 Newell at Las Palmas N.C. 84.5 3-1998 9/14/1998 Plaza and Manchester, N.C. N.C. 89.1 76.0 83.5 65.2 4-1998 10/12/1998 4578 Paseo De La Vista, Bonita Bonita 102.4 4-1998 10/12/1998 5747 Pray Street, Bonita Bonita 95.8 4-1998 10/12/1998 Lynwood and Holly Way, Bonita Bonita 91.6 4-1998 10/12/1998 700 Block of F Street, C.V. C.V. 102.4 Quarter Date Sample Point: Area TTHMs MA QA RAA 4-1998 10/12/1998 I Street and Colorado, C.V. C.V. 99.3 4-1998 10/12/1998 109 16th Street, N.C. N.C. 86.9 4-1998 10/12/1998 El Toyon Park, N.C. N.C. 4.1 4-1998 10/12/1998 Newell at Las Palmas N.C. 95.2 4-1998 10/12/1998 Plaza and Manchester, N.C. N.C. 98.8 86.6 4-1998 11/9/1998 4578 Paseo De La Vista, Bonita Bonita 100.7 4-1998 11/9/1998 5747 Pray Street, Bonita Bonita 99.7 4-1998 11/9/1998 Lynwood and Holly Way, Bonita Bonita 93.7 4-1998 11/9/1998 700 Block of F Street, C.V. C.V. 92.6 4-1998 11/9/1998 I and Woodlawn, C.V. C.V. 95.9 4-1998 11/9/1998 109 16th Street, N.C. N.C. 84.5 4-1998 11/9/1998 El Toyon Park, N.C. N.C. 4.3 4-1998 11/9/1998 NC Wells Tank N.C. 3.8 4-1998 11/9/1998 Newell at Las Palmas N.C. 86.6 4-1998 11/9/1998 Plaza and Manchester, N.C. N.C. 82.6 74.4 4-1998 12/14/1998 4578 Paseo De La Vista, Bonita Bonita 101.6 4-1998 12/14/1998 5747 Pray Street, Bonita Bonita 98.0 4-1998 12/14/1998 Lynwood and Holly Way, Bonita Bonita 93.9 4-1998 12/14/1998 700 Block of F Street, C.V. C.V. 90.9 4-1998 12/14/1998 I and Woodlawn, C.V. C.V. 88.6 4-1998 12/14/1998 109 16th Street, N.C. N.C. 63.8 4-1998 12/14/1998 El Toyon Park, N.C. N.C. 4.4 4-1998 12/14/1998 NC Wells Tank N.C. 3.9 4-1998 12/14/1998 Newell at Las Palmas N.C. 90.4 4-1998 12/14/1998 Plaza and Manchester, N.C. N.C. 93.8 72.9 78.0 72.5 1-1999 1/11/1999 4578 Paseo De La Vista, Bonita Bonita 79.4 1-1999 1/11/1999 5747 Pray Street, Bonita Bonita 78.9 1-1999 1/11/1999 Lynwood and Holly Way, Bonita Bonita 72.8 1-1999 1/11/1999 700 Block of F Street, C.V. C.V. 72.8 1-1999 1/11/1999 I and Woodlawn, C.V. C.V. 66.3 1-1999 1/11/1999 109 16th Street, N.C. N.C. 64.5 1-1999 1/11/1999 El Toyon Park, N.C. N.C. 4.9 1-1999 1/11/1999 NC Wells Tank N.C. 5.0 1-1999 1/11/1999 Newell at Las Palmas N.C. 72.5 1-1999 1/11/1999 Plaza and Manchester, N.C. N.C. 77.8 59.5 1-1999 2/8/1999 4578 Paseo De La Vista, Bonita Bonita 71.0 1-1999 2/8/1999 5747 Pray Street, Bonita Bonita 67.6 1-1999 2/8/1999 Lynwood and Holly Way, Bonita Bonita 69.2 1-1999 2/8/1999 700 Block of F Street, C.V. C.V. 70.2 1-1999 2/8/1999 I and Woodlawn, C.V. C.V. 73.3 1-1999 2/8/1999 109 16th Street, N.C. N.C. 48.2 1-1999 2/8/1999 El Toyon Park, N.C. N.C. 4.8 1-1999 2/8/1999 NC Wells Tank N.C. 4.1 1-1999 2/8/1999 Newell at Las Palmas N.C. 69.6 1-1999 2/8/1999 Plaza and Manchester, N.C. N.C. 63.2 54.1 1-1999 3/8/1999 4578 Paseo De La Vista, Bonita Bonita 81.3 1-1999 3/8/1999 5747 Pray Street, Bonita Bonita 82.0 1-1999 3/8/1999 Lynwood and Holly Way, Bonita Bonita 78.7 1-1999 3/8/1999 700 Block of F Street, C.V. C.V. 82.9 1-1999 3/8/1999 I and Woodlawn, C.V. C.V. 79.7 1-1999 3/8/1999 109 16th Street, N.C. N.C. 68.8 1-1999 3/8/1999 El Toyon Park, N.C. N.C. 5.0 1-1999 3/8/1999 NC Wells Tank N.C. 3.9 1-1999 3/8/1999 Newell at Las Palmas N.C. 75.6 1-1999 3/8/1999 Plaza and Manchester, N.C. N.C. 83.0 64.1 59.2 74.9 2-1999 4/19/1999 4578 Paseo De La Vista, Bonita Bonita 88.2 2-1999 4/19/1999 5747 Pray Street, Bonita Bonita 81.1 2-1999 4/19/1999 Lynwood and Holly Way, Bonita Bonita 89.6 2-1999 4/19/1999 700 Block of F Street, C.V. C.V. 83.6 2-1999 4/19/1999 I and Woodlawn, C.V. C.V. 82.9 2-1999 4/19/1999 109 16th Street, N.C. N.C. 74.7 2-1999 4/19/1999 El Toyon Park, N.C. N.C. 5.1 2-1999 4/19/1999 NC Wells Tank N.C. 4.4 2-1999 4/19/1999 Newell at Las Palmas N.C. 81.4 2-1999 4/19/1999 Plaza and Manchester, N.C. N.C. 86.5 67.8 2-1999 5/10/1999 4578 Paseo De La Vista, Bonita Bonita 86.7 2-1999 5/10/1999 5747 Pray Street, Bonita Bonita 83.8 2-1999 5/10/1999 Lynwood and Holly Way, Bonita Bonita 88.8 2-1999 5/10/1999 700 Block of F Street, C.V. C.V. 77.8 2-1999 5/10/1999 I and Woodlawn, C.V. C.V. 76.8 2-1999 5/10/1999 109 16th Street, N.C. N.C. 82.0 2-1999 5/10/1999 El Toyon Park, N.C. N.C. 1.7 2-1999 5/10/1999 NC Wells Tank N.C. 1.6 2-1999 5/10/1999 Newell at Las Palmas N.C. 86.1 2-1999 5/10/1999 Plaza and Manchester, N.C. N.C. 90.3 67.6 2-1999 6/7/1999 4578 Paseo De La Vista, Bonita Bonita 100.1 2-1999 6/7/1999 5747 Pray Street, Bonita Bonita 98.3 2-1999 6/7/1999 Lynwood and Holly Way, Bonita Bonita 102.0 2-1999 6/7/1999 700 Block of F Street, C.V. C.V. 90.0 2-1999 6/7/1999 I and Woodlawn, C.V. C.V. 89.2 2-1999 6/7/1999 109 16th Street, N.C. N.C. 93.0 2-1999 6/7/1999 El Toyon Park, N.C. N.C. 5.7 2-1999 6/7/1999 NC Wells Tank N.C. 4.7 2-1999 6/7/1999 Newell at Las Palmas N.C. 100.4 2-1999 6/7/1999 Plaza and Manchester, N.C. N.C. 79.2 76.3 70.5 72.8 3-1999 7/12/1999 4578 Paseo De La Vista, Bonita Bonita 105.3 3-1999 7/12/1999 5747 Pray Street, Bonita Bonita 108.3 3-1999 7/12/1999 Lynwood and Holly Way, Bonita Bonita 106.7 3-1999 7/12/1999 700 Block of F Street, C.V. C.V. 109.2 3-1999 7/12/1999 I and Woodlawn, C.V. C.V. 103.0 3-1999 7/12/1999 109 16th Street, N.C. N.C. 102.7 3-1999 7/12/1999 El Toyon Park, N.C. N.C. 4.6 3-1999 7/12/1999 NC Wells Tank N.C. 3.8 3-1999 7/12/1999 Newell at Las Palmas N.C. 106.7 3-1999 7/12/1999 Plaza and Manchester, N.C. N.C. 101.3 85.2 3-1999 8/9/1999 4578 Paseo De La Vista, Bonita Bonita 97.9 3-1999 8/9/1999 5747 Pray Street, Bonita Bonita 100.0 3-1999 8/9/1999 Lynwood and Holly Way, Bonita Bonita 108.2 Quarter Date Sample Point: Area TTHMs MA QA RAA 3-1999 8/9/1999 700 Block of F Street, C.V. C.V. 105.2 3-1999 8/9/1999 I and Woodlawn, C.V. C.V. 82.5 3-1999 8/9/1999 109 16th Street, N.C. N.C. 106.0 3-1999 8/9/1999 El Toyon Park, N.C. N.C. 13.0 3-1999 8/9/1999 NC Wells Tank N.C. 4.4 3-1999 8/9/1999 Newell at Las Palmas N.C. 102.3 3-1999 8/9/1999 Plaza and Manchester, N.C. N.C. 88.4 80.8 3-1999 9/13/1999 4578 Paseo De La Vista, Bonita Bonita 98.1 3-1999 9/13/1999 5747 Pray Street, Bonita Bonita 101.3 3-1999 9/13/1999 Lynwood and Holly Way, Bonita Bonita 95.2 3-1999 9/13/1999 700 Block of F Street, C.V. C.V. 99.4 3-1999 9/13/1999 I and Woodlawn, C.V. C.V. 98.8 3-1999 9/13/1999 109 16th Street, N.C. N.C. 102.0 3-1999 9/13/1999 El Toyon Park, N.C. N.C. 5.7 3-1999 9/13/1999 NC Wells Tank N.C. 4.6 3-1999 9/13/1999 Newell at Las Palmas N.C. 99.2 3-1999 9/13/1999 Plaza and Manchester, N.C. N.C. 98.2 80.3 82.1 72.4 4-1999 10/11/1999 4578 Paseo De La Vista, Bonita Bonita 12.5 4-1999 10/11/1999 5747 Pray Street, Bonita Bonita 13.0 4-1999 10/11/1999 Lynwood and Holly Way, Bonita Bonita 13.2 4-1999 10/11/1999 700 Block of F Street, C.V. C.V. 13.4 4-1999 10/11/1999 I and Woodlawn, C.V. C.V. 11.9 4-1999 10/11/1999 109 16th Street, N.C. N.C. 13.8 4-1999 10/11/1999 El Toyon Park, N.C. N.C. 5.1 4-1999 10/11/1999 NC Wells Tank N.C. 4.2 4-1999 10/11/1999 Newell at Las Palmas N.C. 13.3 4-1999 10/11/1999 Plaza and Manchester, N.C. N.C. 18.2 11.9 4-1999 12/13/1999 4578 Paseo De La Vista, Bonita Bonita 11.4 4-1999 12/13/1999 5747 Pray Street, Bonita Bonita 8.7 4-1999 12/13/1999 Lynwood and Holly Way, Bonita Bonita 60.1 4-1999 12/13/1999 700 Block of F Street, C.V. C.V. 9.4 4-1999 12/13/1999 I and Woodlawn, C.V. C.V. 11.5 4-1999 12/13/1999 109 16th Street, N.C. N.C. 11.3 4-1999 12/13/1999 El Toyon Park, N.C. N.C. 5.4 4-1999 12/13/1999 NC Wells Tank N.C. 4.4 4-1999 12/13/1999 Newell at Las Palmas N.C. 9.4 4-1999 12/13/1999 Plaza and Manchester, N.C. N.C. 40.9 17.3 14.6 56.6 1-2000 1/10/2000 4578 Paseo De La Vista, Bonita Bonita 9.9 1-2000 1/10/2000 5747 Pray Street, Bonita Bonita 8.7 1-2000 1/10/2000 Lynwood and Holly Way, Bonita Bonita 12.3 1-2000 1/10/2000 700 Block of F Street, C.V. C.V. 9.1 1-2000 1/10/2000 I and Woodlawn, C.V. C.V. 9.1 1-2000 1/10/2000 109 16th Street, N.C. N.C. 5.6 1-2000 1/10/2000 El Toyon Park, N.C. N.C. 5.1 1-2000 1/10/2000 NC Wells Tank N.C. 4.1 1-2000 1/10/2000 Newell at Las Palmas N.C. 5.0 1-2000 1/10/2000 Plaza and Manchester, N.C. N.C. 11.5 8.0 1-2000 2/14/2000 4578 Paseo De La Vista, Bonita Bonita 61.8 1-2000 2/14/2000 5747 Pray Street, Bonita Bonita 62.4 1-2000 2/14/2000 Lynwood and Holly Way, Bonita Bonita 60.1 1-2000 2/14/2000 700 Block of F Street, C.V. C.V. 60.6 1-2000 2/14/2000 I and Woodlawn, C.V. C.V. 56.0 1-2000 2/14/2000 109 16th Street, N.C. N.C. 3.7 1-2000 2/14/2000 El Toyon Park, N.C. N.C. 6.7 1-2000 2/14/2000 NC Wells Tank N.C. 5.3 1-2000 2/14/2000 Newell at Las Palmas N.C. 9.7 1-2000 2/14/2000 Plaza and Manchester, N.C. N.C. 8.7 33.5 1-2000 3/13/2000 4578 Paseo De La Vista, Bonita Bonita 93.1 1-2000 3/13/2000 5747 Pray Street, Bonita Bonita 91.4 1-2000 3/13/2000 Lynwood and Holly Way, Bonita Bonita 84.5 1-2000 3/13/2000 700 Block of F Street, C.V. C.V. 78.9 1-2000 3/13/2000 I and Woodlawn, C.V. C.V. 81.3 1-2000 3/13/2000 109 16th Street, N.C. N.C. 3.4 1-2000 3/13/2000 El Toyon Park, N.C. N.C. 5.8 1-2000 3/13/2000 NC Wells Tank N.C. 4.7 1-2000 3/13/2000 Newell at Las Palmas N.C. 13.8 1-2000 3/13/2000 Plaza and Manchester, N.C. N.C. 8.4 46.5 29.4 49.1 2-2000 4/11/2000 4578 Paseo De La Vista, Bonita Bonita 81.6 2-2000 4/11/2000 5747 Pray Street, Bonita Bonita 64.6 2-2000 4/11/2000 Lynwood and Holly Way, Bonita Bonita 68.1 2-2000 4/11/2000 700 Block of F Street, C.V. C.V. 65.2 2-2000 4/11/2000 I and Woodlawn, C.V. C.V. 59.3 2-2000 4/11/2000 109 16th Street, N.C. N.C. 12.1 2-2000 4/11/2000 135 Laurel Avenue N.C. 7.9 2-2000 4/11/2000 1704 10th Street N.C. 8.8 2-2000 4/11/2000 721 J Avenue N.C. 9.9 2-2000 4/11/2000 El Toyon Park, N.C. N.C. 6.0 2-2000 4/11/2000 NC Wells Tank N.C. 4.5 2-2000 4/11/2000 Newell at Las Palmas N.C. 14.9 33.6 2-2000 5/8/2000 4578 Paseo De La Vista, Bonita Bonita 83.8 2-2000 5/8/2000 5747 Pray Street, Bonita Bonita 82.7 2-2000 5/8/2000 Lynwood and Holly Way, Bonita Bonita 78.9 2-2000 5/8/2000 700 Block of F Street, C.V. C.V. 80.4 2-2000 5/8/2000 I and Woodlawn, C.V. C.V. 61.1 2-2000 5/8/2000 109 16th Street, N.C. N.C. 21.3 2-2000 5/8/2000 135 Laurel Avenue N.C. 7.3 2-2000 5/8/2000 1704 10th Street N.C. 8.3 2-2000 5/8/2000 721 J Avenue N.C. 8.9 2-2000 5/8/2000 El Toyon Park, N.C. N.C. 4.8 2-2000 5/8/2000 NC Wells Tank N.C. 3.7 2-2000 5/8/2000 Newell at Las Palmas N.C. 19.4 38.4 2-2000 6/12/2000 4578 Paseo De La Vista, Bonita Bonita 89.2 2-2000 6/12/2000 5747 Pray Street, Bonita Bonita 85.4 2-2000 6/12/2000 Lynwood and Holly Way, Bonita Bonita 84.3 2-2000 6/12/2000 700 Block of F Street, C.V. C.V. 84.8 2-2000 6/12/2000 I and Woodlawn, C.V. C.V. 83.5 2-2000 6/12/2000 109 16th Street, N.C. N.C. 13.3 2-2000 6/12/2000 135 Laurel Avenue N.C. 8.9 Quarter Date Sample Point: Area TTHMs MA QA RAA 2-2000 6/12/2000 1704 10th Street N.C. 9.6 2-2000 6/12/2000 2121 L Ave N.C. 22.0 2-2000 6/12/2000 2822 N Ave N.C. 2.1 2-2000 6/12/2000 721 J Avenue N.C. 10.2 2-2000 6/12/2000 927 East 28th Street N.C. 7.5 2-2000 6/12/2000 El Toyon Park, N.C. N.C. 6.0 2-2000 6/12/2000 NC Wells Tank N.C. 4.9 2-2000 6/12/2000 Newell at Las Palmas N.C. 84.1 39.7 37.2 40.8 3-2000 7/10/2000 4578 Paseo De La Vista, Bonita Bonita 106.1 3-2000 7/10/2000 5747 Pray Street, Bonita Bonita 106.1 3-2000 7/10/2000 Lynwood and Holly Way, Bonita Bonita 105.1 3-2000 7/10/2000 700 Block of F Street, C.V. C.V. 96.1 3-2000 7/10/2000 I and Woodlawn, C.V. C.V. 77.8 3-2000 7/10/2000 109 16th Street, N.C. N.C. 66.8 3-2000 7/10/2000 135 Laurel Avenue N.C. 8.7 3-2000 7/10/2000 1704 10th Street N.C. 9.9 3-2000 7/10/2000 2121 L Ave N.C. 2.2 3-2000 7/10/2000 2822 N Ave N.C. 2.0 3-2000 7/10/2000 721 J Avenue N.C. 10.3 3-2000 7/10/2000 927 East 28th Street N.C. 1.8 3-2000 7/10/2000 El Toyon Park, N.C. N.C. 5.5 3-2000 7/10/2000 NC Wells Tank N.C. 5.1 3-2000 7/10/2000 Newell at Las Palmas N.C. 61.7 44.3 3-2000 8/2/2000 4578 Paseo De La Vista, Bonita Bonita 106.7 3-2000 8/2/2000 5747 Pray Street, Bonita Bonita 104.3 3-2000 8/2/2000 Lynwood and Holly Way, Bonita Bonita 104.5 3-2000 8/2/2000 700 Block of F Street, C.V. C.V. 109.2 3-2000 8/2/2000 I and Woodlawn, C.V. C.V. 107.1 3-2000 8/2/2000 109 16th Street, N.C. N.C. 77.4 3-2000 8/2/2000 135 Laurel Avenue N.C. 7.2 3-2000 8/2/2000 1704 10th Street N.C. 8.3 3-2000 8/2/2000 2121 L Ave N.C. 2.1 3-2000 8/2/2000 2822 N Ave N.C. 1.0 3-2000 8/2/2000 721 J Avenue N.C. 12.5 3-2000 8/2/2000 927 East 28th Street N.C. 1.0 3-2000 8/2/2000 El Toyon Park, N.C. N.C. 5.1 3-2000 8/2/2000 NC Wells Tank N.C. 4.5 3-2000 8/2/2000 Newell at Las Palmas N.C. 86.8 49.2 46.8 32.0 4-2000 10/9/2000 4578 Paseo De La Vista, Bonita Bonita 72.5 4-2000 10/9/2000 5747 Pray Street, Bonita Bonita 78.0 4-2000 10/9/2000 Lynwood and Holly Way, Bonita Bonita 72.6 4-2000 10/9/2000 700 Block of F Street, C.V. C.V. 74.9 4-2000 10/9/2000 I and Woodlawn, C.V. C.V. 75.5 4-2000 10/9/2000 109 16th Street, N.C. N.C. 74.5 4-2000 10/9/2000 135 Laurel Avenue N.C. 10.5 4-2000 10/9/2000 1704 10th Street N.C. 8.3 4-2000 10/9/2000 2121 L Ave N.C. 71.5 4-2000 10/9/2000 2822 N Ave N.C. 71.7 4-2000 10/9/2000 721 J Avenue N.C. 10.7 4-2000 10/9/2000 927 East 28th Street N.C. 72.5 4-2000 10/9/2000 El Toyon Park, N.C. N.C. 5.7 4-2000 10/9/2000 NC Wells Tank N.C. 4.5 4-2000 10/9/2000 Newell at Las Palmas N.C. 71.1 51.6 4-2000 11/13/2000 4578 Paseo De La Vista, Bonita Bonita 16.7 4-2000 11/13/2000 5747 Pray Street, Bonita Bonita 17.5 4-2000 11/13/2000 Lynwood and Holly Way, Bonita Bonita 17.7 4-2000 11/13/2000 700 Block of F Street, C.V. C.V. 15.7 4-2000 11/13/2000 I and Woodlawn, C.V. C.V. 15.9 4-2000 11/13/2000 109 16th Street, N.C. N.C. 2.3 4-2000 11/13/2000 135 Laurel Avenue N.C. 7.3 4-2000 11/13/2000 1704 10th Street N.C. 8.0 4-2000 11/13/2000 2121 L Ave N.C. 1.4 4-2000 11/13/2000 2822 N Ave N.C. 1.1 4-2000 11/13/2000 721 J Avenue N.C. 7.7 4-2000 11/13/2000 927 East 28th Street N.C. 1.2 4-2000 11/13/2000 El Toyon Park, N.C. N.C. 5.1 4-2000 11/13/2000 NC Wells Tank N.C. 3.8 4-2000 11/13/2000 Newell at Las Palmas N.C. 5.6 8.5 4-2000 12/5/2000 4578 Paseo De La Vista, Bonita Bonita 69.7 4-2000 12/5/2000 5747 Pray Street, Bonita Bonita 69.2 4-2000 12/5/2000 Lynwood and Holly Way, Bonita Bonita 71.8 4-2000 12/5/2000 700 Block of F Street, C.V. C.V. 71.9 4-2000 12/5/2000 I and Woodlawn, C.V. C.V. 68.9 4-2000 12/5/2000 109 16th Street, N.C. N.C. 2.5 4-2000 12/5/2000 135 Laurel Avenue N.C. 6.9 4-2000 12/5/2000 1704 10th Street N.C. 7.4 4-2000 12/5/2000 2121 L Ave N.C. 1.3 4-2000 12/5/2000 2822 N Ave N.C. 1.0 4-2000 12/5/2000 721 J Avenue N.C. 10.5 4-2000 12/5/2000 927 East 28th Street N.C. 1.0 4-2000 12/5/2000 El Toyon Park, N.C. N.C. 5.3 4-2000 12/5/2000 NC Wells Tank N.C. 4.1 4-2000 12/5/2000 Newell at Las Palmas N.C. 16.7 27.2 29.1 35.6 1-2001 1/9/2001 4578 Paseo De La Vista, Bonita Bonita 8.6 1-2001 1/9/2001 5747 Pray Street, Bonita Bonita 7.8 1-2001 1/9/2001 Lynwood and Holly Way, Bonita Bonita 14.2 1-2001 1/9/2001 700 Block of F Street, C.V. C.V. 8.1 1-2001 1/9/2001 I and Woodlawn, C.V. C.V. 7.8 1-2001 1/9/2001 109 16th Street, N.C. N.C. 3.1 1-2001 1/9/2001 135 Laurel Avenue N.C. 7.0 1-2001 1/9/2001 1704 10th Street N.C. 7.7 1-2001 1/9/2001 2121 L Ave N.C. 1.2 1-2001 1/9/2001 2822 N Ave N.C. 1.0 1-2001 1/9/2001 721 J Avenue N.C. 9.4 1-2001 1/9/2001 927 East 28th Street N.C. 1.1 1-2001 1/9/2001 El Toyon Park, N.C. N.C. 5.6 1-2001 1/9/2001 NC Wells Tank N.C. 4.5 1-2001 1/9/2001 Newell at Las Palmas N.C. 6.4 6.2 Quarter Date Sample Point: Area TTHMs MA QA RAA 1-2001 2/12/2001 4578 Paseo De La Vista, Bonita Bonita 11.6 1-2001 2/12/2001 5747 Pray Street, Bonita Bonita 11.6 1-2001 2/12/2001 Lynwood and Holly Way, Bonita Bonita 13.3 1-2001 2/12/2001 700 Block of F Street, C.V. C.V. 11.4 1-2001 2/12/2001 I and Woodlawn, C.V. C.V. 11.5 1-2001 2/12/2001 109 16th Street, N.C. N.C. 3.4 1-2001 2/12/2001 135 Laurel Avenue N.C. 3.9 1-2001 2/12/2001 1704 10th Street N.C. 7.3 1-2001 2/12/2001 2121 L Ave N.C. 1.3 1-2001 2/12/2001 2822 N Ave N.C. 1.0 1-2001 2/12/2001 721 J Avenue N.C. 8.5 1-2001 2/12/2001 927 East 28th Street N.C. 1.0 1-2001 2/12/2001 El Toyon Park, N.C. N.C. 5.2 1-2001 2/12/2001 NC Wells Tank N.C. 6.6 1-2001 2/12/2001 Newell at Las Palmas N.C. 5.4 6.9 1-2001 3/12/2001 4578 Paseo De La Vista, Bonita Bonita 6.4 1-2001 3/12/2001 5747 Pray Street, Bonita Bonita 14.3 1-2001 3/12/2001 Lynwood and Holly Way, Bonita Bonita 14.2 1-2001 3/12/2001 700 Block of F Street, C.V. C.V. 12.1 1-2001 3/12/2001 I and Woodlawn, C.V. C.V. 12.0 1-2001 3/12/2001 109 16th Street, N.C. N.C. 4.8 1-2001 3/12/2001 135 Laurel Avenue N.C. 6.9 1-2001 3/12/2001 1704 10th Street N.C. 8.3 1-2001 3/12/2001 2121 L Ave N.C. 3.9 1-2001 3/12/2001 2822 N Ave N.C. 3.4 1-2001 3/12/2001 721 J Avenue N.C. 9.0 1-2001 3/12/2001 927 East 28th Street N.C. 3.5 1-2001 3/12/2001 El Toyon Park, N.C. N.C. 5.5 1-2001 3/12/2001 NC Wells Tank N.C. 4.2 1-2001 3/12/2001 Newell at Las Palmas N.C. 4.4 7.5 6.9 30.0 2-2001 4/9/2001 4578 Paseo De La Vista, Bonita Bonita 23.6 2-2001 4/9/2001 5747 Pray Street, Bonita Bonita 23.6 2-2001 4/9/2001 Lynwood and Holly Way, Bonita Bonita 2.7 2-2001 4/9/2001 700 Block of F Street, C.V. C.V. 18.3 2-2001 4/9/2001 I and Woodlawn, C.V. C.V. 22.1 2-2001 4/9/2001 109 16th Street, N.C. N.C. 9.3 2-2001 4/9/2001 135 Laurel Avenue N.C. 6.7 2-2001 4/9/2001 1704 10th Street N.C. 7.5 2-2001 4/9/2001 2121 L Ave N.C. 3.8 2-2001 4/9/2001 2822 N Ave N.C. 3.9 2-2001 4/9/2001 721 J Avenue N.C. 7.5 2-2001 4/9/2001 927 East 28th Street N.C. 2.7 2-2001 4/9/2001 El Toyon Park, N.C. N.C. 4.8 2-2001 4/9/2001 NC Wells Tank N.C. 3.7 2-2001 4/9/2001 Newell at Las Palmas N.C. 18.4 10.6 2-2001 6/11/2001 4578 Paseo De La Vista, Bonita Bonita 79.5 2-2001 6/11/2001 5747 Pray Street, Bonita Bonita 80.7 2-2001 6/11/2001 Lynwood and Holly Way, Bonita Bonita 82.9 2-2001 6/11/2001 700 Block of F Street, C.V. C.V. 78.3 2-2001 6/11/2001 I and Woodlawn, C.V. C.V. 78.3 2-2001 6/11/2001 109 16th Street, N.C. N.C. 49.9 2-2001 6/11/2001 135 Laurel Avenue N.C. 7.0 2-2001 6/11/2001 1704 10th Street N.C. 7.9 2-2001 6/11/2001 2121 L Ave N.C. 53.0 2-2001 6/11/2001 2822 N Ave N.C. 15.0 2-2001 6/11/2001 721 J Avenue N.C. 11.7 2-2001 6/11/2001 927 East 28th Street N.C. 16.5 2-2001 6/11/2001 El Toyon Park, N.C. N.C. 5.0 2-2001 6/11/2001 NC Wells Tank N.C. 3.9 2-2001 6/11/2001 Newell at Las Palmas N.C. 75.4 43.0 26.8 27.4 3-2001 8/6/2001 4578 Paseo De La Vista, Bonita Bonita 72.4 3-2001 8/6/2001 5747 Pray Street, Bonita Bonita 74.7 3-2001 8/6/2001 Lynwood and Holly Way, Bonita Bonita 73.5 3-2001 8/6/2001 700 Block of F Street, C.V. C.V. 75.0 3-2001 8/6/2001 I and Woodlawn, C.V. C.V. 76.2 3-2001 8/6/2001 109 16th Street, N.C. N.C. 56.7 3-2001 8/6/2001 135 Laurel Avenue N.C. 8.6 3-2001 8/6/2001 1704 10th Street N.C. 9.3 3-2001 8/6/2001 2121 L Ave N.C. 20.4 3-2001 8/6/2001 2822 N Ave N.C. 19.6 3-2001 8/6/2001 721 J Avenue N.C. 9.2 3-2001 8/6/2001 927 East 28th Street N.C. 20.2 3-2001 8/6/2001 El Toyon Park, N.C. N.C. 5.2 3-2001 8/6/2001 NC Wells Tank N.C. 3.9 3-2001 8/6/2001 Newell at Las Palmas N.C. 70.8 39.7 39.7 25.6 4-2001 10/15/2001 4578 Paseo De La Vista, Bonita Bonita 78.1 4-2001 10/15/2001 5747 Pray Street, Bonita Bonita 61.7 4-2001 10/15/2001 Lynwood and Holly Way, Bonita Bonita 74.0 4-2001 10/15/2001 700 Block of F Street, C.V. C.V. 68.1 4-2001 10/15/2001 I and Woodlawn, C.V. C.V. 67.7 4-2001 10/15/2001 109 16th Street, N.C. N.C. 52.8 4-2001 10/15/2001 135 Laurel Avenue N.C. 37.4 4-2001 10/15/2001 1704 10th Street N.C. 11.1 4-2001 10/15/2001 2121 L Ave N.C. 25.0 4-2001 10/15/2001 2822 N Ave N.C. 22.3 4-2001 10/15/2001 721 J Avenue N.C. 26.3 4-2001 10/15/2001 927 East 28th Street N.C. 22.2 4-2001 10/15/2001 El Toyon Park, N.C. N.C. 14.7 4-2001 10/15/2001 NC Wells Tank N.C. 25.5 4-2001 10/15/2001 Newell at Las Palmas N.C. 52.6 42.6 4-2001 12/10/2001 4578 Paseo De La Vista, Bonita Bonita 28.7 4-2001 12/10/2001 Lynwood and Holly Way, Bonita Bonita 28.2 4-2001 12/10/2001 368 Anita Street C.V. 30.4 4-2001 12/10/2001 700 Block of F Street, C.V. C.V. 29.3 4-2001 12/10/2001 I and Woodlawn, C.V. C.V. 29.5 4-2001 12/10/2001 109 16th Street, N.C. N.C. 1.9 4-2001 12/10/2001 135 Laurel Avenue N.C. 30.9 4-2001 12/10/2001 1704 10th Street N.C. 11.0 Quarter Date Sample Point: Area TTHMs MA QA RAA 4-2001 12/10/2001 2121 L Ave N.C. 0.9 4-2001 12/10/2001 2822 N Ave N.C. 0.8 4-2001 12/10/2001 721 J Avenue N.C. 8.8 4-2001 12/10/2001 927 East 28th Street N.C. 0.8 4-2001 12/10/2001 El Toyon Park, N.C. N.C. 23.8 4-2001 12/10/2001 Newell at Las Palmas N.C. 11.0 16.9 29.7 25.8 1-2002 1/21/2002 4578 Paseo De La Vista, Bonita Bonita 10.6 1-2002 1/21/2002 Lynwood and Holly Way, Bonita Bonita 11.0 1-2002 1/21/2002 368 Anita Street C.V. 10.5 1-2002 1/21/2002 601 Sea Vale Street C.V. 5.0 1-2002 1/21/2002 700 Block of F Street, C.V. C.V. 1-2002 1/21/2002 I and Woodlawn, C.V. C.V. 10.9 1-2002 1/21/2002 109 16th Street, N.C. N.C. 3.6 1-2002 1/21/2002 135 Laurel Avenue N.C. 5.1 1-2002 1/21/2002 1704 10th Street N.C. 5.7 1-2002 1/21/2002 2121 L Ave N.C. 0.0 1-2002 1/21/2002 2822 N Ave N.C. 0.0 1-2002 1/21/2002 721 J Avenue N.C. 6.9 1-2002 1/21/2002 927 East 28th Street N.C. 0.0 1-2002 1/21/2002 El Toyon Park, N.C. N.C. 2.9 1-2002 1/21/2002 Newell at Las Palmas N.C. 8.5 5.8 5.8 25.5 2-2002 4/8/2002 4578 Paseo De La Vista, Bonita Bonita 28.1 2-2002 4/8/2002 Lynwood and Holly Way, Bonita Bonita 23.7 2-2002 4/8/2002 368 Anita Street C.V. 26.9 2-2002 4/8/2002 601 Sea Vale Street C.V. 8.6 2-2002 4/8/2002 700 Block of F Street, C.V. C.V. 22.9 2-2002 4/8/2002 I and Woodlawn, C.V. C.V. 24.5 2-2002 4/8/2002 109 16th Street, N.C. N.C. 10.3 2-2002 4/8/2002 135 Laurel Avenue N.C. 7.5 2-2002 4/8/2002 1704 10th Street N.C. 8.9 2-2002 4/8/2002 2121 L Ave N.C. 12.1 2-2002 4/8/2002 2822 N Ave N.C. 0.8 2-2002 4/8/2002 721 J Avenue N.C. 8.6 2-2002 4/8/2002 927 East 28th Street N.C. 0.9 2-2002 4/8/2002 El Toyon Park, N.C. N.C. 5.4 2-2002 4/8/2002 Newell at Las Palmas N.C. 15.6 13.7 2-2002 5/20/2002 4578 Paseo De La Vista, Bonita Bonita 18.4 2-2002 5/20/2002 Lynwood and Holly Way, Bonita Bonita 17.3 2-2002 5/20/2002 368 Anita Street C.V. 18.2 2-2002 5/20/2002 601 Sea Vale Street C.V. 17.1 2-2002 5/20/2002 700 Block of F Street, C.V. C.V. 15.9 2-2002 5/20/2002 I and Woodlawn, C.V. C.V. 17.2 2-2002 5/20/2002 109 16th Street, N.C. N.C. 14.2 2-2002 5/20/2002 135 Laurel Avenue N.C. 7.0 2-2002 5/20/2002 1704 10th Street N.C. 7.6 2-2002 5/20/2002 2121 L Ave N.C. 0.9 2-2002 5/20/2002 2822 N Ave N.C. 0.9 2-2002 5/20/2002 721 J Avenue N.C. 9.4 2-2002 5/20/2002 927 East 28th Street N.C. 0.9 2-2002 5/20/2002 El Toyon Park, N.C. N.C. 5.0 2-2002 5/20/2002 Newell at Las Palmas N.C. 17.6 11.2 2-2002 6/10/2002 4578 Paseo De La Vista, Bonita Bonita 52.1 2-2002 6/10/2002 Lynwood and Holly Way, Bonita Bonita 52.5 2-2002 6/10/2002 368 Anita Street C.V. 51.8 2-2002 6/10/2002 601 Sea Vale Street C.V. 37.7 2-2002 6/10/2002 700 Block of F Street, C.V. C.V. 54.1 2-2002 6/10/2002 I and Woodlawn, C.V. C.V. 52.6 2-2002 6/10/2002 109 16th Street, N.C. N.C. 10.3 2-2002 6/10/2002 135 Laurel Avenue N.C. 6.8 2-2002 6/10/2002 1704 10th Street N.C. 8.2 2-2002 6/10/2002 2121 L Ave N.C. 0.9 2-2002 6/10/2002 2822 N Ave N.C. 0.8 2-2002 6/10/2002 721 J Avenue N.C. 9.2 2-2002 6/10/2002 927 East 28th Street N.C. 1.0 2-2002 6/10/2002 El Toyon Park, N.C. N.C. 4.9 2-2002 6/10/2002 Newell at Las Palmas N.C. 53.4 26.4 17.1 23.1 3-2002 7/16/2002 4578 Paseo De La Vista, Bonita Bonita 42.3 3-2002 7/16/2002 Lynwood and Holly Way, Bonita Bonita 44.7 3-2002 7/16/2002 368 Anita Street C.V. 37.1 3-2002 7/16/2002 601 Sea Vale Street C.V. 1.3 3-2002 7/16/2002 700 Block of F Street, C.V. C.V. 42.2 3-2002 7/16/2002 I and Woodlawn, C.V. C.V. 42.0 3-2002 7/16/2002 109 16th Street, N.C. N.C. 23.3 3-2002 7/16/2002 135 Laurel Avenue N.C. 7.3 3-2002 7/16/2002 1704 10th Street N.C. 8.4 3-2002 7/16/2002 2121 L Ave N.C. 1.8 3-2002 7/16/2002 2822 N Ave N.C. 0.9 3-2002 7/16/2002 721 J Avenue N.C. 8.9 3-2002 7/16/2002 927 East 28th Street N.C. 0.9 3-2002 7/16/2002 El Toyon Park, N.C. N.C. 5.4 3-2002 7/16/2002 Newell at Las Palmas N.C. 41.7 20.5 3-2002 8/12/2002 4578 Paseo De La Vista, Bonita Bonita 51.5 3-2002 8/12/2002 Lynwood and Holly Way, Bonita Bonita 53.3 3-2002 8/12/2002 368 Anita Street C.V. 54.4 3-2002 8/12/2002 601 Sea Vale Street C.V. 49.9 3-2002 8/12/2002 700 Block of F Street, C.V. C.V. 53.3 3-2002 8/12/2002 I and Woodlawn, C.V. C.V. 52.7 3-2002 8/12/2002 109 16th Street, N.C. N.C. 12.3 3-2002 8/12/2002 135 Laurel Avenue N.C. 7.1 3-2002 8/12/2002 1704 10th Street N.C. 8.4 3-2002 8/12/2002 2121 L Ave N.C. 1.1 3-2002 8/12/2002 2822 N Ave N.C. 0.8 3-2002 8/12/2002 721 J Avenue N.C. 8.3 3-2002 8/12/2002 927 East 28th Street N.C. 0.9 3-2002 8/12/2002 El Toyon Park, N.C. N.C. 5.2 3-2002 8/12/2002 Newell at Las Palmas N.C. 53.7 27.5 3-2002 9/9/2002 4578 Paseo De La Vista, Bonita Bonita 42.1 3-2002 9/9/2002 Lynwood and Holly Way, Bonita Bonita 44.2 Quarter Date Sample Point: Area TTHMs MA QA RAA 3-2002 9/9/2002 368 Anita Street C.V. 34.6 3-2002 9/9/2002 601 Sea Vale Street C.V. 2.3 3-2002 9/9/2002 700 Block of F Street, C.V. C.V. 22.3 3-2002 9/9/2002 I and Woodlawn, C.V. C.V. 40.0 3-2002 9/9/2002 109 16th Street, N.C. N.C. 31.9 3-2002 9/9/2002 135 Laurel Avenue N.C. 7.2 3-2002 9/9/2002 1704 10th Street N.C. 9.8 3-2002 9/9/2002 2121 L Ave N.C. 18.9 3-2002 9/9/2002 2822 N Ave N.C. 0.8 3-2002 9/9/2002 721 J Avenue N.C. 17.7 3-2002 9/9/2002 927 East 28th Street N.C. 0.9 3-2002 9/9/2002 El Toyon Park, N.C. N.C. 5.1 3-2002 9/9/2002 Newell at Las Palmas N.C. 35.3 20.9 23.0 18.9 4-2002 10/14/2002 4578 Paseo De La Vista, Bonita Bonita 33.7 4-2002 10/14/2002 Lynwood and Holly Way, Bonita Bonita 33.9 4-2002 10/14/2002 368 Anita Street C.V. 35.1 4-2002 10/14/2002 601 Sea Vale Street C.V. 9.4 4-2002 10/14/2002 700 Block of F Street, C.V. C.V. 22.8 4-2002 10/14/2002 I and Woodlawn, C.V. C.V. 33.7 4-2002 10/14/2002 109 16th Street, N.C. N.C. 33.3 4-2002 10/14/2002 135 Laurel Avenue N.C. 7.1 4-2002 10/14/2002 1704 10th Street N.C. 9.6 4-2002 10/14/2002 2121 L Ave N.C. 33.0 4-2002 10/14/2002 2822 N Ave N.C. 1.0 4-2002 10/14/2002 721 J Avenue N.C. 33.3 4-2002 10/14/2002 927 East 28th Street N.C. 1.5 4-2002 10/14/2002 El Toyon Park, N.C. N.C. 4.8 4-2002 10/14/2002 Newell at Las Palmas N.C. 33.7 21.7 4-2002 11/11/2002 4578 Paseo De La Vista, Bonita Bonita 47.2 4-2002 11/11/2002 Lynwood and Holly Way, Bonita Bonita 38.8 4-2002 11/11/2002 368 Anita Street C.V. 42.0 4-2002 11/11/2002 700 Block of F Street, C.V. C.V. 42.8 4-2002 11/11/2002 I and Woodlawn, C.V. C.V. 45.9 4-2002 11/11/2002 109 16th Street, N.C. N.C. 45.3 4-2002 11/11/2002 135 Laurel Avenue N.C. 7.0 4-2002 11/11/2002 1704 10th Street N.C. 8.1 4-2002 11/11/2002 2121 L Ave N.C. 39.4 4-2002 11/11/2002 2822 N Ave N.C. 1.3 4-2002 11/11/2002 721 J Avenue N.C. 8.0 4-2002 11/11/2002 927 East 28th Street N.C. 1.5 4-2002 11/11/2002 El Toyon Park, N.C. N.C. 5.2 4-2002 11/11/2002 Newell at Las Palmas N.C. 45.1 4-2002 11/13/2002 601 Sea Vale Street C.V. 18.3 26.4 4-2002 12/9/2002 4578 Paseo De La Vista, Bonita Bonita 31.9 4-2002 12/9/2002 Lynwood and Holly Way, Bonita Bonita 28.0 4-2002 12/9/2002 368 Anita Street C.V. 30.9 4-2002 12/9/2002 601 Sea Vale Street C.V. 1.2 4-2002 12/9/2002 700 Block of F Street, C.V. C.V. 19.4 4-2002 12/9/2002 I and Woodlawn, C.V. C.V. 29.1 4-2002 12/9/2002 109 16th Street, N.C. N.C. 29.0 4-2002 12/9/2002 135 Laurel Avenue N.C. 7.2 4-2002 12/9/2002 1704 10th Street N.C. 9.6 4-2002 12/9/2002 2121 L Ave N.C. 30.0 4-2002 12/9/2002 2822 N Ave N.C. 1.0 4-2002 12/9/2002 721 J Avenue N.C. 9.0 4-2002 12/9/2002 927 East 28th Street N.C. 1.0 4-2002 12/9/2002 El Toyon Park, N.C. N.C. 5.7 4-2002 12/9/2002 Newell at Las Palmas N.C. 29.1 17.5 21.9 16.9 1-2003 1/14/2003 4578 Paseo De La Vista, Bonita Bonita 62.7 1-2003 1/14/2003 Lynwood and Holly Way, Bonita Bonita 67.0 1-2003 1/14/2003 368 Anita Street C.V. 68.6 1-2003 1/14/2003 601 Sea Vale Street C.V. 1.6 1-2003 1/14/2003 700 Block of F Street, C.V. C.V. 55.4 1-2003 1/14/2003 I and Woodlawn, C.V. C.V. 67.0 1-2003 1/14/2003 109 16th Street, N.C. N.C. 65.8 1-2003 1/14/2003 135 Laurel Avenue N.C. 7.1 1-2003 1/14/2003 1704 10th Street N.C. 9.2 1-2003 1/14/2003 2121 L Ave N.C. 41.9 1-2003 1/14/2003 2822 N Ave N.C. 1.2 1-2003 1/14/2003 721 J Avenue N.C. 8.8 1-2003 1/14/2003 927 East 28th Street N.C. 1.4 1-2003 1/14/2003 El Toyon Park, N.C. N.C. 5.2 1-2003 1/14/2003 Newell at Las Palmas N.C. 62.0 35.0 1-2003 2/10/2003 4578 Paseo De La Vista, Bonita Bonita 23.9 1-2003 2/10/2003 Lynwood and Holly Way, Bonita Bonita 25.0 1-2003 2/10/2003 368 Anita Street C.V. 21.8 1-2003 2/10/2003 601 Sea Vale Street C.V. 2.4 1-2003 2/10/2003 700 Block of F Street, C.V. C.V. 20.3 1-2003 2/10/2003 I and Woodlawn, C.V. C.V. 21.0 1-2003 2/10/2003 109 16th Street, N.C. N.C. 20.8 1-2003 2/10/2003 135 Laurel Avenue N.C. 6.5 1-2003 2/10/2003 1704 10th Street N.C. 9.3 1-2003 2/10/2003 2121 L Ave N.C. 15.2 1-2003 2/10/2003 2822 N Ave N.C. 1.0 1-2003 2/10/2003 721 J Avenue N.C. 7.9 1-2003 2/10/2003 927 East 28th Street N.C. 1.1 1-2003 2/10/2003 El Toyon Park, N.C. N.C. 4.9 1-2003 2/10/2003 Newell at Las Palmas N.C. 18.8 13.3 1-2003 3/11/2003 4578 Paseo De La Vista, Bonita Bonita 23.4 1-2003 3/11/2003 Lynwood and Holly Way, Bonita Bonita 31.1 1-2003 3/11/2003 368 Anita Street C.V. 29.5 1-2003 3/11/2003 601 Sea Vale Street C.V. 4.5 1-2003 3/11/2003 700 Block of F Street, C.V. C.V. 18.8 1-2003 3/11/2003 I and Woodlawn, C.V. C.V. 24.4 1-2003 3/11/2003 109 16th Street, N.C. N.C. 21.7 1-2003 3/11/2003 135 Laurel Avenue N.C. 7.0 1-2003 3/11/2003 1704 10th Street N.C. 8.9 1-2003 3/11/2003 2121 L Ave N.C. 12.9 Quarter Date Sample Point: Area TTHMs MA QA RAA 1-2003 3/11/2003 2822 N Ave N.C. 0.9 1-2003 3/11/2003 721 J Avenue N.C. 8.3 1-2003 3/11/2003 927 East 28th Street N.C. 1.3 1-2003 3/11/2003 El Toyon Park, N.C. N.C. 4.8 1-2003 3/11/2003 Newell at Las Palmas N.C. 14.7 14.1 20.8 20.7 2-2003 4/14/2003 4578 Paseo De La Vista, Bonita Bonita 23.7 2-2003 4/14/2003 Lynwood and Holly Way, Bonita Bonita 23.0 2-2003 4/14/2003 368 Anita Street C.V. 23.1 2-2003 4/14/2003 601 Sea Vale Street C.V. 3.5 2-2003 4/14/2003 700 Block of F Street, C.V. C.V. 20.9 2-2003 4/14/2003 I and Woodlawn, C.V. C.V. 22.5 2-2003 4/14/2003 109 16th Street, N.C. N.C. 13.0 2-2003 4/14/2003 135 Laurel Avenue N.C. 7.9 2-2003 4/14/2003 1704 10th Street N.C. 20.9 2-2003 4/14/2003 2121 L Ave N.C. 13.9 2-2003 4/14/2003 2822 N Ave N.C. 1.0 2-2003 4/14/2003 721 J Avenue N.C. 18.0 2-2003 4/14/2003 927 East 28th Street N.C. 1.1 2-2003 4/14/2003 El Toyon Park, N.C. N.C. 5.2 2-2003 4/14/2003 Newell at Las Palmas N.C. 19.7 14.5 2-2003 5/12/2003 4578 Paseo De La Vista, Bonita Bonita 53.0 2-2003 5/12/2003 Lynwood and Holly Way, Bonita Bonita 51.2 2-2003 5/12/2003 368 Anita Street C.V. 56.2 2-2003 5/12/2003 601 Sea Vale Street C.V. 29.5 2-2003 5/12/2003 700 Block of F Street, C.V. C.V. 30.5 2-2003 5/12/2003 I and Woodlawn, C.V. C.V. 50.1 2-2003 5/12/2003 109 16th Street, N.C. N.C. 52.4 2-2003 5/12/2003 135 Laurel Avenue N.C. 24.5 2-2003 5/12/2003 1704 10th Street N.C. 49.4 2-2003 5/12/2003 2121 L Ave N.C. 49.2 2-2003 5/12/2003 2822 N Ave N.C. 1.0 2-2003 5/12/2003 721 J Avenue N.C. 46.6 2-2003 5/12/2003 927 East 28th Street N.C. 11.5 2-2003 5/12/2003 El Toyon Park, N.C. N.C. 5.6 2-2003 5/12/2003 Newell at Las Palmas N.C. 53.4 37.6 2-2003 6/9/2003 4578 Paseo De La Vista, Bonita Bonita 68.3 2-2003 6/9/2003 Lynwood and Holly Way, Bonita Bonita 69.3 2-2003 6/9/2003 368 Anita Street C.V. 72.4 2-2003 6/9/2003 601 Sea Vale Street C.V. 10.2 2-2003 6/9/2003 700 Block of F Street, C.V. C.V. 47.3 2-2003 6/9/2003 I and Woodlawn, C.V. C.V. 68.1 2-2003 6/9/2003 109 16th Street, N.C. N.C. 62.7 2-2003 6/9/2003 135 Laurel Avenue N.C. 7.4 2-2003 6/9/2003 1704 10th Street N.C. 47.6 2-2003 6/9/2003 2121 L Ave N.C. 21.3 2-2003 6/9/2003 2822 N Ave N.C. 1.0 2-2003 6/9/2003 721 J Avenue N.C. 17.6 2-2003 6/9/2003 927 East 28th Street N.C. 1.1 2-2003 6/9/2003 El Toyon Park, N.C. N.C. 5.3 2-2003 6/9/2003 Newell at Las Palmas N.C. 54.0 36.9 29.7 23.8 3-2003 7/14/2003 4578 Paseo De La Vista, Bonita Bonita 76.3 3-2003 7/14/2003 Lynwood and Holly Way, Bonita Bonita 77.3 3-2003 7/14/2003 368 Anita Street C.V. 77.1 3-2003 7/14/2003 601 Sea Vale Street C.V. 46.7 3-2003 7/14/2003 700 Block of F Street, C.V. C.V. 73.6 3-2003 7/14/2003 I and Woodlawn, C.V. C.V. 76.7 3-2003 7/14/2003 109 16th Street, N.C. N.C. 74.8 3-2003 7/14/2003 135 Laurel Avenue N.C. 18.8 3-2003 7/14/2003 1704 10th Street N.C. 10.1 3-2003 7/14/2003 2121 L Ave N.C. 57.0 3-2003 7/14/2003 2822 N Ave N.C. 76.5 3-2003 7/14/2003 721 J Avenue N.C. 17.2 3-2003 7/14/2003 927 East 28th Street N.C. 69.2 3-2003 7/14/2003 El Toyon Park, N.C. N.C. 5.4 3-2003 7/14/2003 Newell at Las Palmas N.C. 74.7 55.4 3-2003 8/11/2003 4578 Paseo De La Vista, Bonita Bonita 74.2 3-2003 8/11/2003 Lynwood and Holly Way, Bonita Bonita 75.5 3-2003 8/11/2003 368 Anita Street C.V. 74.0 3-2003 8/11/2003 601 Sea Vale Street C.V. 34.4 3-2003 8/11/2003 700 Block of F Street, C.V. C.V. 69.0 3-2003 8/11/2003 I and Woodlawn, C.V. C.V. 74.2 3-2003 8/11/2003 109 16th Street, N.C. N.C. 74.9 3-2003 8/11/2003 135 Laurel Avenue N.C. 9.1 3-2003 8/11/2003 1704 10th Street N.C. 73.1 3-2003 8/11/2003 2121 L Ave N.C. 65.6 3-2003 8/11/2003 2822 N Ave N.C. 64.9 3-2003 8/11/2003 721 J Avenue N.C. 72.3 3-2003 8/11/2003 927 East 28th Street N.C. 3.7 3-2003 8/11/2003 El Toyon Park, N.C. N.C. 5.4 3-2003 8/11/2003 Newell at Las Palmas N.C. 73.7 56.3 3-2003 9/15/2003 4578 Paseo De La Vista, Bonita Bonita 71.1 3-2003 9/15/2003 Lynwood and Holly Way, Bonita Bonita 64.8 3-2003 9/15/2003 368 Anita Street C.V. 72.7 3-2003 9/15/2003 601 Sea Vale Street C.V. 39.4 3-2003 9/15/2003 700 Block of F Street, C.V. C.V. 67.7 3-2003 9/15/2003 I and Woodlawn, C.V. C.V. 74.0 3-2003 9/15/2003 109 16th Street, N.C. N.C. 71.5 3-2003 9/15/2003 135 Laurel Avenue N.C. 8.1 3-2003 9/15/2003 1704 10th Street N.C. 8.3 3-2003 9/15/2003 2121 L Ave N.C. 63.5 3-2003 9/15/2003 2822 N Ave N.C. 1.9 3-2003 9/15/2003 721 J Avenue N.C. 15.1 3-2003 9/15/2003 927 East 28th Street N.C. 2.1 3-2003 9/15/2003 El Toyon Park, N.C. N.C. 4.7 3-2003 9/15/2003 Newell at Las Palmas N.C. 71.4 42.4 51.4 30.9 4-2003 10/13/2003 4578 Paseo De La Vista, Bonita Bonita 20.2 4-2003 10/13/2003 Lynwood and Holly Way, Bonita Bonita 24.0 4-2003 10/13/2003 368 Anita Street C.V. 20.6 Quarter Date Sample Point: Area TTHMs MA QA RAA 4-2003 10/13/2003 601 Sea Vale Street C.V. 6.7 4-2003 10/13/2003 700 Block of F Street, C.V. C.V. 20.8 4-2003 10/13/2003 I and Woodlawn, C.V. C.V. 22.0 4-2003 10/13/2003 109 16th Street, N.C. N.C. 20.8 4-2003 10/13/2003 135 Laurel Avenue N.C. 8.6 4-2003 10/13/2003 1704 10th Street N.C. 9.3 4-2003 10/13/2003 2121 L Ave N.C. 20.4 4-2003 10/13/2003 2822 N Ave N.C. 2.0 4-2003 10/13/2003 721 J Avenue N.C. 10.9 4-2003 10/13/2003 927 East 28th Street N.C. 3.9 4-2003 10/13/2003 El Toyon Park, N.C. N.C. 5.3 4-2003 10/13/2003 Newell at Las Palmas N.C. 20.2 14.4 4-2003 11/3/2003 4578 Paseo De La Vista, Bonita Bonita 19.2 4-2003 11/3/2003 Lynwood and Holly Way, Bonita Bonita 27.1 4-2003 11/3/2003 368 Anita Street C.V. 22.7 4-2003 11/3/2003 601 Sea Vale Street C.V. 11.2 4-2003 11/3/2003 700 Block of F Street, C.V. C.V. 24.5 4-2003 11/3/2003 I and Woodlawn, C.V. C.V. 25.1 4-2003 11/3/2003 109 16th Street, N.C. N.C. 18.3 4-2003 11/3/2003 135 Laurel Avenue N.C. 8.5 4-2003 11/3/2003 1704 10th Street N.C. 8.3 4-2003 11/3/2003 2121 L Ave N.C. 15.3 4-2003 11/3/2003 2822 N Ave N.C. 1.4 4-2003 11/3/2003 721 J Avenue N.C. 8.1 4-2003 11/3/2003 927 East 28th Street N.C. 1.6 4-2003 11/3/2003 El Toyon Park, N.C. N.C. 4.8 4-2003 11/3/2003 Newell at Las Palmas N.C. 18.8 14.3 4-2003 11/17/2003 4209 Country Trails Bonita 57.7 4-2003 11/17/2003 943 Rawhide Court Bonita 65.1 4-2003 11/17/2003 Lynwood and Holly Way, Bonita Bonita 60.8 4-2003 11/17/2003 1142 Oleander C.V. 59.1 4-2003 11/17/2003 Crest Drive C.V. 58.3 60.2 4-2003 12/9/2003 4578 Paseo De La Vista, Bonita Bonita 48.7 4-2003 12/9/2003 Lynwood and Holly Way, Bonita Bonita 49.9 4-2003 12/9/2003 368 Anita Street C.V. 48.6 4-2003 12/9/2003 601 Sea Vale Street C.V. 2.7 4-2003 12/9/2003 700 Block of F Street, C.V. C.V. 48.7 4-2003 12/9/2003 I and Woodlawn, C.V. C.V. 50.1 4-2003 12/9/2003 109 16th Street, N.C. N.C. 49.4 4-2003 12/9/2003 135 Laurel Avenue N.C. 9.1 4-2003 12/9/2003 1704 10th Street N.C. 10.1 4-2003 12/9/2003 2121 L Ave N.C. 39.0 4-2003 12/9/2003 2822 N Ave N.C. 1.9 4-2003 12/9/2003 721 J Avenue N.C. 13.4 4-2003 12/9/2003 927 East 28th Street N.C. 2.2 4-2003 12/9/2003 El Toyon Park, N.C. N.C. 5.3 4-2003 12/9/2003 Newell at Las Palmas N.C. 49.0 28.5 29.4 32.8 1-2004 1/13/2004 4578 Paseo De La Vista, Bonita Bonita 19.5 1-2004 1/13/2004 Lynwood and Holly Way, Bonita Bonita 20.1 1-2004 1/13/2004 368 Anita Street C.V. 19.8 1-2004 1/13/2004 601 Sea Vale Street C.V. 6.9 1-2004 1/13/2004 700 Block of F Street, C.V. C.V. 19.8 1-2004 1/13/2004 I and Woodlawn, C.V. C.V. 20.3 1-2004 1/13/2004 109 16th Street, N.C. N.C. 18.3 1-2004 1/13/2004 135 Laurel Avenue N.C. 21.5 1-2004 1/13/2004 1704 10th Street N.C. 19.3 1-2004 1/13/2004 2121 L Ave N.C. 17.7 1-2004 1/13/2004 2822 N Ave N.C. 1.5 1-2004 1/13/2004 721 J Avenue N.C. 19.5 1-2004 1/13/2004 927 East 28th Street N.C. 1.7 1-2004 1/13/2004 El Toyon Park, N.C. N.C. 22.1 1-2004 1/13/2004 Newell at Las Palmas N.C. 19.7 16.5 1-2004 2/10/2004 4578 Paseo De La Vista, Bonita Bonita 29.3 1-2004 2/10/2004 Lynwood and Holly Way, Bonita Bonita 31.0 1-2004 2/10/2004 368 Anita Street C.V. 30.8 1-2004 2/10/2004 601 Sea Vale Street C.V. 1.1 1-2004 2/10/2004 700 Block of F Street, C.V. C.V. 21.2 1-2004 2/10/2004 I and Woodlawn, C.V. C.V. 29.5 1-2004 2/10/2004 109 16th Street, N.C. N.C. 21.3 1-2004 2/10/2004 135 Laurel Avenue N.C. 19.4 1-2004 2/10/2004 1704 10th Street N.C. 28.2 1-2004 2/10/2004 2121 L Ave N.C. 15.3 1-2004 2/10/2004 2822 N Ave N.C. 0.8 1-2004 2/10/2004 721 J Avenue N.C. 28.7 1-2004 2/10/2004 927 East 28th Street N.C. 1.0 1-2004 2/10/2004 El Toyon Park, N.C. N.C. 2.2 1-2004 2/10/2004 Newell at Las Palmas N.C. 28.6 19.2 1-2004 3/8/2004 4578 Paseo De La Vista, Bonita Bonita 73.8 1-2004 3/8/2004 Lynwood and Holly Way, Bonita Bonita 68.7 1-2004 3/8/2004 368 Anita Street C.V. 78.0 1-2004 3/8/2004 601 Sea Vale Street C.V. 5.5 1-2004 3/8/2004 700 Block of F Street, C.V. C.V. 66.1 1-2004 3/8/2004 I and Woodlawn, C.V. C.V. 77.2 1-2004 3/8/2004 109 16th Street, N.C. N.C. 54.4 1-2004 3/8/2004 135 Laurel Avenue N.C. 13.7 1-2004 3/8/2004 1704 10th Street N.C. 27.2 1-2004 3/8/2004 2121 L Ave N.C. 39.1 1-2004 3/8/2004 2822 N Ave N.C. 1.0 1-2004 3/8/2004 721 J Avenue N.C. 47.3 1-2004 3/8/2004 927 East 28th Street N.C. 1.1 1-2004 3/8/2004 El Toyon Park, N.C. N.C. 2.6 1-2004 3/8/2004 Newell at Las Palmas N.C. 73.2 41.9 25.9 34.1 2-2004 4/12/2004 4578 Paseo De La Vista, Bonita Bonita 78.1 2-2004 4/12/2004 Lynwood and Holly Way, Bonita Bonita 66.7 2-2004 4/12/2004 368 Anita Street C.V. 77.3 2-2004 4/12/2004 601 Sea Vale Street C.V. 0.9 2-2004 4/12/2004 700 Block of F Street, C.V. C.V. 51.5 2-2004 4/12/2004 I and Woodlawn, C.V. C.V. 68.3 Quarter Date Sample Point: Area TTHMs MA QA RAA 2-2004 4/12/2004 109 16th Street, N.C. N.C. 73.8 2-2004 4/12/2004 135 Laurel Avenue N.C. 8.4 2-2004 4/12/2004 1704 10th Street N.C. 9.1 2-2004 4/12/2004 2121 L Ave N.C. 55.5 2-2004 4/12/2004 2822 N Ave N.C. 0.7 2-2004 4/12/2004 721 J Avenue N.C. 24.5 2-2004 4/12/2004 927 East 28th Street N.C. 1.3 2-2004 4/12/2004 El Toyon Park, N.C. N.C. 4.4 2-2004 4/12/2004 Newell at Las Palmas N.C. 47.6 37.9 2-2004 6/7/2004 4578 Paseo De La Vista, Bonita Bonita 25.4 2-2004 6/7/2004 Lynwood and Holly Way, Bonita Bonita 27.5 2-2004 6/7/2004 368 Anita Street C.V. 24.4 2-2004 6/7/2004 601 Sea Vale Street C.V. 8.2 2-2004 6/7/2004 700 Block of F Street, C.V. C.V. 18.9 2-2004 6/7/2004 I and Woodlawn, C.V. C.V. 24.6 2-2004 6/7/2004 109 16th Street, N.C. N.C. 24.0 2-2004 6/7/2004 135 Laurel Avenue N.C. 5.8 2-2004 6/7/2004 1704 10th Street N.C. 6.2 2-2004 6/7/2004 2121 L Ave N.C. 17.2 2-2004 6/7/2004 2822 N Ave N.C. 1.3 2-2004 6/7/2004 721 J Avenue N.C. 5.8 2-2004 6/7/2004 927 East 28th Street N.C. 1.5 2-2004 6/7/2004 El Toyon Park, N.C. N.C. 3.4 2-2004 6/7/2004 Newell at Las Palmas N.C. 23.1 14.5 26.2 33.2 3-2004 7/12/2004 4578 Paseo De La Vista, Bonita Bonita 57.1 3-2004 7/12/2004 Lynwood and Holly Way, Bonita Bonita 57.7 3-2004 7/12/2004 368 Anita Street C.V. 59.6 3-2004 7/12/2004 601 Sea Vale Street C.V. 20.7 3-2004 7/12/2004 700 Block of F Street, C.V. C.V. 51.3 3-2004 7/12/2004 I and Woodlawn, C.V. C.V. 58.0 3-2004 7/12/2004 109 16th Street, N.C. N.C. 57.3 3-2004 7/12/2004 135 Laurel Avenue N.C. 6.5 3-2004 7/12/2004 1704 10th Street N.C. 6.3 3-2004 7/12/2004 2121 L Ave N.C. 54.4 3-2004 7/12/2004 2822 N Ave N.C. 1.5 3-2004 7/12/2004 721 J Avenue N.C. 6.3 3-2004 7/12/2004 927 East 28th Street N.C. 16.6 3-2004 7/12/2004 El Toyon Park, N.C. N.C. 3.8 3-2004 7/12/2004 Newell at Las Palmas N.C. 56.3 34.2 3-2004 8/2/2004 4578 Paseo De La Vista, Bonita Bonita 14.8 3-2004 8/2/2004 Lynwood and Holly Way, Bonita Bonita 16.6 3-2004 8/2/2004 368 Anita Street C.V. 15.8 3-2004 8/2/2004 601 Sea Vale Street C.V. 11.5 3-2004 8/2/2004 700 Block of F Street, C.V. C.V. 12.4 3-2004 8/2/2004 I and Woodlawn, C.V. C.V. 15.1 3-2004 8/2/2004 109 16th Street, N.C. N.C. 15.0 3-2004 8/2/2004 135 Laurel Avenue N.C. 6.3 3-2004 8/2/2004 1704 10th Street N.C. 5.9 3-2004 8/2/2004 2121 L Ave N.C. 14.7 3-2004 8/2/2004 2822 N Ave N.C. 14.6 3-2004 8/2/2004 721 J Avenue N.C. 6.1 3-2004 8/2/2004 927 East 28th Street N.C. 2.0 3-2004 8/2/2004 El Toyon Park, N.C. N.C. 3.5 3-2004 8/2/2004 Newell at Las Palmas N.C. 15.1 11.3 3-2004 9/13/2004 4578 Paseo De La Vista, Bonita Bonita 21.7 3-2004 9/13/2004 Lynwood and Holly Way, Bonita Bonita 23.7 3-2004 9/13/2004 368 Anita Street C.V. 19.5 3-2004 9/13/2004 601 Sea Vale Street C.V. 12.4 3-2004 9/13/2004 700 Block of F Street, C.V. C.V. 18.7 3-2004 9/13/2004 I and Woodlawn, C.V. C.V. 20.8 3-2004 9/13/2004 109 16th Street, N.C. N.C. 18.8 3-2004 9/13/2004 135 Laurel Avenue N.C. 5.8 3-2004 9/13/2004 1704 10th Street N.C. 5.5 3-2004 9/13/2004 2121 L Ave N.C. 18.4 3-2004 9/13/2004 2822 N Ave N.C. 17.4 3-2004 9/13/2004 721 J Avenue N.C. 6.0 3-2004 9/13/2004 927 East 28th Street N.C. 1.9 3-2004 9/13/2004 El Toyon Park, N.C. N.C. 3.6 3-2004 9/13/2004 Newell at Las Palmas N.C. 18.4 14.2 19.9 25.3 4-2004 10/11/2004 4578 Paseo De La Vista, Bonita Bonita 8.7 4-2004 10/11/2004 Lynwood and Holly Way, Bonita Bonita 9.8 4-2004 10/11/2004 368 Anita Street C.V. 9.4 4-2004 10/11/2004 601 Sea Vale Street C.V. 5.5 4-2004 10/11/2004 700 Block of F Street, C.V. C.V. 9.1 4-2004 10/11/2004 I and Woodlawn, C.V. C.V. 9.1 4-2004 10/11/2004 109 16th Street, N.C. N.C. 8.5 4-2004 10/11/2004 135 Laurel Avenue N.C. 5.8 4-2004 10/11/2004 1704 10th Street N.C. 5.7 4-2004 10/11/2004 2121 L Ave N.C. 8.7 4-2004 10/11/2004 2822 N Ave N.C. 8.7 4-2004 10/11/2004 721 J Avenue N.C. 6.2 4-2004 10/11/2004 927 East 28th Street N.C. 4.8 4-2004 10/11/2004 El Toyon Park, N.C. N.C. 3.5 4-2004 10/11/2004 Newell at Las Palmas N.C. 8.5 7.5 4-2004 11/8/2004 4578 Paseo De La Vista, Bonita Bonita 13.8 4-2004 11/8/2004 Lynwood and Holly Way, Bonita Bonita 14.2 4-2004 11/8/2004 368 Anita Street C.V. 14.5 4-2004 11/8/2004 601 Sea Vale Street C.V. 6.7 4-2004 11/8/2004 700 Block of F Street, C.V. C.V. 14.6 4-2004 11/8/2004 I and Woodlawn, C.V. C.V. 13.8 4-2004 11/8/2004 109 16th Street, N.C. N.C. 14.3 4-2004 11/8/2004 135 Laurel Avenue N.C. 5.9 4-2004 11/8/2004 1704 10th Street N.C. 5.5 4-2004 11/8/2004 2121 L Ave N.C. 12.0 4-2004 11/8/2004 2822 N Ave N.C. 1.6 4-2004 11/8/2004 721 J Avenue N.C. 6.1 4-2004 11/8/2004 927 East 28th Street N.C. 1.8 4-2004 11/8/2004 El Toyon Park, N.C. N.C. 3.4 Quarter Date Sample Point: Area TTHMs MA QA RAA 4-2004 11/8/2004 Newell at Las Palmas N.C. 28.7 10.5 4-2004 12/14/2004 4578 Paseo De La Vista, Bonita Bonita 7.7 4-2004 12/14/2004 Lynwood and Holly Way, Bonita Bonita 6.0 4-2004 12/14/2004 368 Anita Street C.V. 7.2 4-2004 12/14/2004 601 Sea Vale Street C.V. 1.9 4-2004 12/14/2004 700 Block of F Street, C.V. C.V. 7.2 4-2004 12/14/2004 I and Woodlawn, C.V. C.V. 6.2 4-2004 12/14/2004 109 16th Street, N.C. N.C. 6.5 4-2004 12/14/2004 135 Laurel Avenue N.C. 5.7 4-2004 12/14/2004 1704 10th Street N.C. 5.4 4-2004 12/14/2004 2121 L Ave N.C. 4.1 4-2004 12/14/2004 2822 N Ave N.C. 1.0 4-2004 12/14/2004 721 J Avenue N.C. 5.7 4-2004 12/14/2004 927 East 28th Street N.C. 1.1 4-2004 12/14/2004 El Toyon Park, N.C. N.C. 3.5 4-2004 12/14/2004 Newell at Las Palmas N.C. 8.8 5.2 7.7 19.9 1-2005 1/10/2005 4578 Paseo De La Vista, Bonita Bonita 13.1 1-2005 1/10/2005 Lynwood and Holly Way, Bonita Bonita 13.1 1-2005 1/10/2005 368 Anita Street C.V. 14.4 1-2005 1/10/2005 601 Sea Vale Street C.V. 9.1 1-2005 1/10/2005 700 Block of F Street, C.V. C.V. 9.7 1-2005 1/10/2005 I and Woodlawn, C.V. C.V. 8.2 1-2005 1/10/2005 109 16th Street, N.C. N.C. 4.0 1-2005 1/10/2005 135 Laurel Avenue N.C. 5.7 1-2005 1/10/2005 1704 10th Street N.C. 5.4 1-2005 1/10/2005 2121 L Ave N.C. 2.8 1-2005 1/10/2005 2822 N Ave N.C. 1.0 1-2005 1/10/2005 721 J Avenue N.C. 5.9 1-2005 1/10/2005 927 East 28th Street N.C. 1.2 1-2005 1/10/2005 El Toyon Park, N.C. N.C. 3.6 1-2005 1/10/2005 Newell at Las Palmas N.C. 8.4 7.0 1-2005 2/7/2005 4578 Paseo De La Vista, Bonita Bonita 14.5 1-2005 2/7/2005 Lynwood and Holly Way, Bonita Bonita 15.5 1-2005 2/7/2005 368 Anita Street C.V. 16.7 1-2005 2/7/2005 601 Sea Vale Street C.V. 5.7 1-2005 2/7/2005 700 Block of F Street, C.V. C.V. 14.2 1-2005 2/7/2005 I and Woodlawn, C.V. C.V. 15.5 1-2005 2/7/2005 109 16th Street, N.C. N.C. 13.3 1-2005 2/7/2005 135 Laurel Avenue N.C. 10.0 1-2005 2/7/2005 1704 10th Street N.C. 8.9 1-2005 2/7/2005 2121 L Ave N.C. 10.5 1-2005 2/7/2005 2822 N Ave N.C. 1.3 1-2005 2/7/2005 721 J Avenue N.C. 10.1 1-2005 2/7/2005 927 East 28th Street N.C. 1.3 1-2005 2/7/2005 El Toyon Park, N.C. N.C. 5.7 1-2005 2/7/2005 Newell at Las Palmas N.C. 13.1 10.4 1-2005 3/14/2005 4578 Paseo De La Vista, Bonita Bonita 26.0 1-2005 3/14/2005 Lynwood and Holly Way, Bonita Bonita 20.8 1-2005 3/14/2005 368 Anita Street C.V. 24.3 1-2005 3/14/2005 601 Sea Vale Street C.V. 22.0 1-2005 3/14/2005 700 Block of F Street, C.V. C.V. 21.5 1-2005 3/14/2005 I and Woodlawn, C.V. C.V. 23.2 1-2005 3/14/2005 109 16th Street, N.C. N.C. 21.9 1-2005 3/14/2005 135 Laurel Avenue N.C. 6.8 1-2005 3/14/2005 1704 10th Street N.C. 21.2 1-2005 3/14/2005 2121 L Ave N.C. 21.2 1-2005 3/14/2005 2822 N Ave N.C. 21.3 1-2005 3/14/2005 721 J Avenue N.C. 13.8 1-2005 3/14/2005 927 East 28th Street N.C. 21.0 1-2005 3/14/2005 El Toyon Park, N.C. N.C. 6.3 1-2005 3/14/2005 Newell at Las Palmas N.C. 22.4 19.6 12.3 16.5 2-2005 4/11/2005 4578 Paseo De La Vista, Bonita Bonita 28.3 2-2005 4/11/2005 Lynwood and Holly Way, Bonita Bonita 29.2 2-2005 4/11/2005 368 Anita Street C.V. 27.5 2-2005 4/11/2005 601 Sea Vale Street C.V. 26.3 2-2005 4/11/2005 700 Block of F Street, C.V. C.V. 26.1 2-2005 4/11/2005 I and Woodlawn, C.V. C.V. 26.7 2-2005 4/11/2005 109 16th Street, N.C. N.C. 27.1 2-2005 4/11/2005 135 Laurel Avenue N.C. 27.8 2-2005 4/11/2005 1704 10th Street N.C. 26.9 2-2005 4/11/2005 2121 L Ave N.C. 26.9 2-2005 4/11/2005 2822 N Ave N.C. 29.1 2-2005 4/11/2005 721 J Avenue N.C. 27.4 2-2005 4/11/2005 927 East 28th Street N.C. 28.1 2-2005 4/11/2005 El Toyon Park, N.C. N.C. 27.5 2-2005 4/11/2005 Newell at Las Palmas N.C. 27.4 27.5 27.5 16.9 3-2005 7/11/2005 4578 Paseo De La Vista, Bonita Bonita 21.4 3-2005 7/11/2005 Lynwood and Holly Way, Bonita Bonita 25.0 3-2005 7/11/2005 368 Anita Street C.V. 20.9 3-2005 7/11/2005 601 Sea Vale Street C.V. 12.7 3-2005 7/11/2005 700 Block of F Street, C.V. C.V. 17.8 3-2005 7/11/2005 I and Woodlawn, C.V. C.V. 17.0 3-2005 7/11/2005 109 16th Street, N.C. N.C. 17.5 3-2005 7/11/2005 135 Laurel Avenue N.C. 4.7 3-2005 7/11/2005 1704 10th Street N.C. 13.5 3-2005 7/11/2005 2121 L Ave N.C. 14.3 3-2005 7/11/2005 2822 N Ave N.C. 1.9 3-2005 7/11/2005 721 J Avenue N.C. 5.2 3-2005 7/11/2005 927 East 28th Street N.C. 1.7 3-2005 7/11/2005 El Toyon Park, N.C. N.C. 4.0 3-2005 7/11/2005 Newell at Las Palmas N.C. 22.3 13.3 3-2005 8/8/2005 4578 Paseo De La Vista, Bonita Bonita 25.3 3-2005 8/8/2005 Lynwood and Holly Way, Bonita Bonita 32.3 3-2005 8/8/2005 368 Anita Street C.V. 25.4 3-2005 8/8/2005 601 Sea Vale Street C.V. 3.2 3-2005 8/8/2005 700 Block of F Street, C.V. C.V. 23.8 3-2005 8/8/2005 I and Woodlawn, C.V. C.V. 25.2 3-2005 8/8/2005 109 16th Street, N.C. N.C. 25.4 Quarter Date Sample Point: Area TTHMs MA QA RAA 3-2005 8/8/2005 135 Laurel Avenue N.C. 8.1 3-2005 8/8/2005 1704 10th Street N.C. 26.1 3-2005 8/8/2005 2121 L Ave N.C. 25.7 3-2005 8/8/2005 2822 N Ave N.C. 22.4 3-2005 8/8/2005 721 J Avenue N.C. 20.1 3-2005 8/8/2005 927 East 28th Street N.C. 23.9 3-2005 8/8/2005 El Toyon Park, N.C. N.C. 6.8 3-2005 8/8/2005 Newell at Las Palmas N.C. 24.2 21.2 17.3 16.2 4-2005 10/10/2005 4578 Paseo De La Vista, Bonita Bonita 49.5 4-2005 10/10/2005 Lynwood and Holly Way, Bonita Bonita 34.5 4-2005 10/10/2005 368 Anita Street C.V. 44.0 4-2005 10/10/2005 601 Sea Vale Street C.V. 2.9 4-2005 10/10/2005 700 Block of F Street, C.V. C.V. 41.5 4-2005 10/10/2005 I and Woodlawn, C.V. C.V. 24.2 4-2005 10/10/2005 109 16th Street, N.C. N.C. 46.4 4-2005 10/10/2005 135 Laurel Avenue N.C. 4.4 4-2005 10/10/2005 1704 10th Street N.C. 4.8 4-2005 10/10/2005 2121 L Ave N.C. 33.5 4-2005 10/10/2005 2822 N Ave N.C. 1.5 4-2005 10/10/2005 721 J Avenue N.C. 4.7 4-2005 10/10/2005 927 East 28th Street N.C. 1.5 4-2005 10/10/2005 El Toyon Park, N.C. N.C. 3.6 4-2005 10/10/2005 Newell at Las Palmas N.C. 47.9 23.0 4-2005 11/14/2005 4578 Paseo De La Vista, Bonita Bonita 40.6 4-2005 11/14/2005 Lynwood and Holly Way, Bonita Bonita 39.6 4-2005 11/14/2005 368 Anita Street C.V. 39.8 4-2005 11/14/2005 601 Sea Vale Street C.V. 15.9 4-2005 11/14/2005 700 Block of F Street, C.V. C.V. 33.2 4-2005 11/14/2005 I and Woodlawn, C.V. C.V. 40.4 4-2005 11/14/2005 109 16th Street, N.C. N.C. 42.1 4-2005 11/14/2005 135 Laurel Avenue N.C. 4.0 4-2005 11/14/2005 1704 10th Street N.C. 4.7 4-2005 11/14/2005 2121 L Ave N.C. 4.4 4-2005 11/14/2005 2822 N Ave N.C. 1.5 4-2005 11/14/2005 721 J Avenue N.C. 29.9 4-2005 11/14/2005 927 East 28th Street N.C. 1.6 4-2005 11/14/2005 El Toyon Park, N.C. N.C. 3.5 4-2005 11/14/2005 Newell at Las Palmas N.C. 41.9 22.9 22.9 20.0 1-2006 1/9/2006 4578 Paseo De La Vista, Bonita Bonita 69.4 1-2006 1/9/2006 Lynwood and Holly Way, Bonita Bonita 12.8 1-2006 1/9/2006 368 Anita Street C.V. 29.8 1-2006 1/9/2006 601 Sea Vale Street C.V. 8.9 1-2006 1/9/2006 700 Block of F Street, C.V. C.V. 56.6 1-2006 1/9/2006 I and Woodlawn, C.V. C.V. 52.4 1-2006 1/9/2006 109 16th Street, N.C. N.C. 58.1 1-2006 1/9/2006 135 Laurel Avenue N.C. 4.5 1-2006 1/9/2006 1704 10th Street N.C. 5.0 1-2006 1/9/2006 2121 L Ave N.C. 38.4 1-2006 1/9/2006 2822 N Ave N.C. 1.5 1-2006 1/9/2006 721 J Avenue N.C. 5.0 1-2006 1/9/2006 927 East 28th Street N.C. 1.6 1-2006 1/9/2006 El Toyon Park, N.C. N.C. 3.4 1-2006 1/9/2006 Newell at Las Palmas N.C. 47.5 26.3 1-2006 2/6/2006 4578 Paseo De La Vista, Bonita Bonita 31.8 1-2006 2/6/2006 Lynwood and Holly Way, Bonita Bonita 33.8 1-2006 2/6/2006 368 Anita Street C.V. 36.7 1-2006 2/6/2006 601 Sea Vale Street C.V. 9.8 1-2006 2/6/2006 700 Block of F Street, C.V. C.V. 31.4 1-2006 2/6/2006 I and Woodlawn, C.V. C.V. 36.2 1-2006 2/6/2006 109 16th Street, N.C. N.C. 34.4 1-2006 2/6/2006 135 Laurel Avenue N.C. 34.6 1-2006 2/6/2006 1704 10th Street N.C. 35.9 1-2006 2/6/2006 2121 L Ave N.C. 28.2 1-2006 2/6/2006 2822 N Ave N.C. 2.7 1-2006 2/6/2006 721 J Avenue N.C. 34.6 1-2006 2/6/2006 927 East 28th Street N.C. 2.8 1-2006 2/6/2006 El Toyon Park, N.C. N.C. 34.6 1-2006 2/6/2006 Newell at Las Palmas N.C. 34.8 28.2 1-2006 3/13/2006 4578 Paseo De La Vista, Bonita Bonita 30.0 1-2006 3/13/2006 Lynwood and Holly Way, Bonita Bonita 45.6 1-2006 3/13/2006 368 Anita Street C.V. 25.5 1-2006 3/13/2006 601 Sea Vale Street C.V. 23.3 1-2006 3/13/2006 700 Block of F Street, C.V. C.V. 22.6 1-2006 3/13/2006 I and Woodlawn, C.V. C.V. 24.0 1-2006 3/13/2006 109 16th Street, N.C. N.C. 24.2 1-2006 3/13/2006 135 Laurel Avenue N.C. 25.0 1-2006 3/13/2006 1704 10th Street N.C. 25.6 1-2006 3/13/2006 2121 L Ave N.C. 23.3 1-2006 3/13/2006 2822 N Ave N.C. 22.5 1-2006 3/13/2006 721 J Avenue N.C. 24.0 1-2006 3/13/2006 927 East 28th Street N.C. 22.4 1-2006 3/13/2006 El Toyon Park, N.C. N.C. 31.0 1-2006 3/13/2006 Newell at Las Palmas N.C. 21.9 26.1 26.8 23.6 2-2006 4/10/2006 4578 Paseo De La Vista, Bonita Bonita 37.8 2-2006 4/10/2006 Lynwood and Holly Way, Bonita Bonita 29.5 2-2006 4/10/2006 368 Anita Street C.V. 34.0 2-2006 4/10/2006 601 Sea Vale Street C.V. 1.6 2-2006 4/10/2006 700 Block of F Street, C.V. C.V. 30.4 2-2006 4/10/2006 I and Woodlawn, C.V. C.V. 34.8 2-2006 4/10/2006 109 16th Street, N.C. N.C. 12.1 2-2006 4/10/2006 135 Laurel Avenue N.C. 3.1 2-2006 4/10/2006 1704 10th Street N.C. 2.7 2-2006 4/10/2006 2121 L Ave N.C. 11.0 2-2006 4/10/2006 2822 N Ave N.C. 1.1 2-2006 4/10/2006 721 J Avenue N.C. 3.3 2-2006 4/10/2006 927 East 28th Street N.C. 1.2 2-2006 4/10/2006 El Toyon Park, N.C. N.C. 1.9 2-2006 4/10/2006 Newell at Las Palmas N.C. 8.0 14.2 Quarter Date Sample Point: Area TTHMs MA QA RAA 2-2006 5/8/2006 4578 Paseo De La Vista, Bonita Bonita 19.4 2-2006 5/8/2006 Lynwood and Holly Way, Bonita Bonita 18.5 2-2006 5/8/2006 368 Anita Street C.V. 19.6 2-2006 5/8/2006 601 Sea Vale Street C.V. 8.2 2-2006 5/8/2006 700 Block of F Street, C.V. C.V. 18.4 2-2006 5/8/2006 I and Woodlawn, C.V. C.V. 21.4 2-2006 5/8/2006 109 16th Street, N.C. N.C. 16.0 2-2006 5/8/2006 135 Laurel Avenue N.C. 3.3 2-2006 5/8/2006 1704 10th Street N.C. 4.6 2-2006 5/8/2006 2121 L Ave N.C. 9.4 2-2006 5/8/2006 2822 N Ave N.C. 0.5 2-2006 5/8/2006 721 J Avenue N.C. 3.8 2-2006 5/8/2006 927 East 28th Street N.C. 0.7 2-2006 5/8/2006 El Toyon Park, N.C. N.C. 1.9 2-2006 5/8/2006 Newell at Las Palmas N.C. 7.3 10.2 12.2 19.8 3-2006 7/10/2006 4578 Paseo De La Vista, Bonita Bonita 36.1 3-2006 7/10/2006 Lynwood and Holly Way, Bonita Bonita 31.4 3-2006 7/10/2006 368 Anita Street C.V. 28.6 3-2006 7/10/2006 601 Sea Vale Street C.V. 19.4 3-2006 7/10/2006 700 Block of F Street, C.V. C.V. 29.1 3-2006 7/10/2006 I and Woodlawn, C.V. C.V. 29.4 3-2006 7/10/2006 109 16th Street, N.C. N.C. 22.8 3-2006 7/10/2006 135 Laurel Avenue N.C. 35.7 3-2006 7/10/2006 1704 10th Street N.C. 27.8 3-2006 7/10/2006 2121 L Ave N.C. 19.0 3-2006 7/10/2006 2822 N Ave N.C. 1.3 3-2006 7/10/2006 721 J Avenue N.C. 26.5 3-2006 7/10/2006 927 East 28th Street N.C. 1.4 3-2006 7/10/2006 El Toyon Park, N.C. N.C. 29.9 3-2006 7/10/2006 Newell at Las Palmas N.C. 24.8 24.2 3-2006 8/21/2006 298 Greenwood Pl. Bonita 71.1 3-2006 8/21/2006 3310 Lynwood Bonita 65.6 3-2006 8/21/2006 4578 Paseo De La Vista, Bonita Bonita 98.0 3-2006 8/21/2006 5378 Carolyn Vista Lane Bonita 75.0 3-2006 8/21/2006 5727 Sunny View Bonita 63.9 3-2006 8/21/2006 Lynwood and Holly Way, Bonita Bonita 102.5 3-2006 8/21/2006 Rawhide Court Bonita 94.0 3-2006 8/21/2006 131 East Quintard C.V. 88.8 3-2006 8/21/2006 1501 Jasper C.V. 44.6 3-2006 8/21/2006 214 J St. C.V. 64.9 3-2006 8/21/2006 2295 Main St C.V. 52.6 3-2006 8/21/2006 368 Anita Street C.V. 139.3 3-2006 8/21/2006 468 Oxford C.V. 78.2 3-2006 8/21/2006 601 Sea Vale Street C.V. 53.3 3-2006 8/21/2006 700 Block of F Street, C.V. C.V. 138.3 3-2006 8/21/2006 I and Woodlawn, C.V. C.V. 123.0 3-2006 8/21/2006 Naples and Melrose C.V. 85.9 3-2006 8/21/2006 SWA Office @ Garrett Ave C.V. 84.4 3-2006 8/21/2006 109 16th Street, N.C. N.C. 94.2 3-2006 8/21/2006 135 Laurel Avenue N.C. 4.2 3-2006 8/21/2006 1704 10th Street N.C. 4.7 3-2006 8/21/2006 2121 L Ave N.C. 88.8 3-2006 8/21/2006 2801 8th Street N.C. 59.7 3-2006 8/21/2006 2822 N Ave N.C. 2.3 3-2006 8/21/2006 721 J Avenue N.C. 5.2 3-2006 8/21/2006 927 East 28th Street N.C. 2.2 3-2006 8/21/2006 El Toyon Park, N.C. N.C. 3.3 3-2006 8/21/2006 Newell at Las Palmas N.C. 86.1 66.9 3-2006 9/18/2006 4578 Paseo De La Vista, Bonita Bonita 55.9 3-2006 9/18/2006 Lynwood and Holly Way, Bonita Bonita 39.1 3-2006 9/18/2006 368 Anita Street C.V. 33.2 3-2006 9/18/2006 601 Sea Vale Street C.V. 6.8 3-2006 9/18/2006 700 Block of F Street, C.V. C.V. 43.1 3-2006 9/18/2006 I and Woodlawn, C.V. C.V. 40.7 3-2006 9/18/2006 109 16th Street, N.C. N.C. 35.5 3-2006 9/18/2006 135 Laurel Avenue N.C. 4.0 3-2006 9/18/2006 1704 10th Street N.C. 6.4 3-2006 9/18/2006 2121 L Ave N.C. 23.9 3-2006 9/18/2006 2822 N Ave N.C. 3.0 3-2006 9/18/2006 721 J Avenue N.C. 4.6 3-2006 9/18/2006 927 East 28th Street N.C. 3.0 3-2006 9/18/2006 El Toyon Park, N.C. N.C. 3.3 3-2006 9/18/2006 Newell at Las Palmas N.C. 22.4 21.7 37.6 24.9 4-2006 10/9/2006 298 Greenwood Pl. Bonita 5.3 4-2006 10/9/2006 3310 Lynwood Bonita 9.9 4-2006 10/9/2006 4578 Paseo De La Vista, Bonita Bonita 12.1 4-2006 10/9/2006 5378 Carolyn Vista Lane Bonita 4.6 4-2006 10/9/2006 5727 Sunny View Bonita 4.9 4-2006 10/9/2006 Lynwood and Holly Way, Bonita Bonita 8.6 4-2006 10/9/2006 Rawhide Court Bonita 5.4 4-2006 10/9/2006 131 East Quintard C.V. 6.1 4-2006 10/9/2006 1501 Jasper C.V. 10.6 4-2006 10/9/2006 214 J St. C.V. 4.7 4-2006 10/9/2006 2295 Main St C.V. 7.4 4-2006 10/9/2006 368 Anita Street C.V. 6.0 4-2006 10/9/2006 468 Oxford C.V. 7.6 4-2006 10/9/2006 601 Sea Vale Street C.V. 4.0 4-2006 10/9/2006 700 Block of F Street, C.V. C.V. 6.1 4-2006 10/9/2006 I and Woodlawn, C.V. C.V. 5.6 4-2006 10/9/2006 Naples and Melrose C.V. 5.5 4-2006 10/9/2006 SWA Office @ Garrett Ave C.V. 3.0 4-2006 10/9/2006 109 16th Street, N.C. N.C. 13.3 4-2006 10/9/2006 135 Laurel Avenue N.C. 3.4 4-2006 10/9/2006 1704 10th Street N.C. 4.0 4-2006 10/9/2006 2121 L Ave N.C. 17.3 4-2006 10/9/2006 2801 8th Street N.C. 13.1 4-2006 10/9/2006 2822 N Ave N.C. 2.7 4-2006 10/9/2006 721 J Avenue N.C. 4.3 Quarter Date Sample Point: Area TTHMs MA QA RAA 4-2006 10/9/2006 927 East 28th Street N.C. 3.0 4-2006 10/9/2006 El Toyon Park, N.C. N.C. 4.2 4-2006 10/9/2006 Newell at Las Palmas N.C. 3.9 6.7 4-2006 11/13/2006 4578 Paseo De La Vista, Bonita Bonita 2.9 4-2006 11/13/2006 Lynwood and Holly Way, Bonita Bonita 6.7 4-2006 11/13/2006 368 Anita Street C.V. 4.1 4-2006 11/13/2006 601 Sea Vale Street C.V. 3.3 4-2006 11/13/2006 700 Block of F Street, C.V. C.V. 3.4 4-2006 11/13/2006 I and Woodlawn, C.V. C.V. 3.4 4-2006 11/13/2006 109 16th Street, N.C. N.C. 6.0 4-2006 11/13/2006 135 Laurel Avenue N.C. 4.4 4-2006 11/13/2006 1704 10th Street N.C. 5.6 4-2006 11/13/2006 2121 L Ave N.C. 4.5 4-2006 11/13/2006 2822 N Ave N.C. 2.0 4-2006 11/13/2006 721 J Avenue N.C. 5.6 4-2006 11/13/2006 927 East 28th Street N.C. 2.1 4-2006 11/13/2006 El Toyon Park, N.C. N.C. 8.0 4-2006 11/13/2006 Newell at Las Palmas N.C. 5.6 4.5 4-2006 12/4/2006 4578 Paseo De La Vista, Bonita Bonita 3.1 4-2006 12/4/2006 Lynwood and Holly Way, Bonita Bonita 2.5 4-2006 12/4/2006 368 Anita Street C.V. 2.4 4-2006 12/4/2006 601 Sea Vale Street C.V. 4.5 4-2006 12/4/2006 700 Block of F Street, C.V. C.V. 2.6 4-2006 12/4/2006 I and Woodlawn, C.V. C.V. 2.2 4-2006 12/4/2006 109 16th Street, N.C. N.C. 8.5 4-2006 12/4/2006 135 Laurel Avenue N.C. 4.1 4-2006 12/4/2006 1704 10th Street N.C. 4.4 4-2006 12/4/2006 2121 L Ave N.C. 6.2 4-2006 12/4/2006 2822 N Ave N.C. 2.1 4-2006 12/4/2006 721 J Avenue N.C. 4.8 4-2006 12/4/2006 927 East 28th Street N.C. 2.3 4-2006 12/4/2006 El Toyon Park, N.C. N.C. 3.3 4-2006 12/4/2006 Newell at Las Palmas N.C. 6.2 3.9 5.0 20.4

ALL MIN 0.0 5.0 16.2 MAX 139.3 83.5 74.9 AVG 34.1 36.5 36.4 MEDIAN 21.2 29.5 30.9 PRE May 2004 MIN 0.0 5.8 16.9 MAX 122.9 83.5 74.9 AVG 39.7 42.2 41.9 MEDIAN 28.2 39.7 38.2 POST May 2004 MIN 0.5 5.0 16.2 MAX 139.3 37.6 33.2 AVG 19.4 19.6 21.5 MEDIAN 13.1 19.9 20.0 Date Sample Point Total HAA5 QA RAA 01/11/99 16th Street 25.7 01/11/99 El Toyon Park 1.5 01/11/99 F Street 29.8 01/11/99 I & Woodlawn 28.2 01/11/99 Lynwood 30.1 01/11/99 Newall @ Las Palmas 29.3 01/11/99 Paseo De La Vista 31.5 01/11/99 Plaza & Manchester 28.3 01/11/99 Pray Street 28 25.82222 04/19/99 16th Street 29 04/19/99 El Toyon Park 3.3 04/19/99 F Street 30.6 04/19/99 I & Woodlawn 29.3 04/19/99 Lynwood 32.6 04/19/99 Newall @ Las Palmas 28 04/19/99 Paseo De La Vista 31.1 04/19/99 Plaza & Manchester 28.1 04/19/99 Pray Street 27.9 26.65556 07/12/99 16th Street 28.2 07/12/99 El Toyon Park 1.4 07/12/99 F Street 31.7 07/12/99 I & Woodlawn 30.8 07/12/99 Lynwood 31.6 07/12/99 Newall @ Las Palmas 31.9 07/12/99 Paseo De La Vista 32.7 07/12/99 Plaza & Manchester 31.3 07/12/99 Pray Street 30.6 27.8 10/11/99 16th Street 9.3 10/11/99 El Toyon Park 3 10/11/99 F Street 8.9 10/11/99 I & Woodlawn 9.2 10/11/99 Lynwood 9.2 10/11/99 Newall @ Las Palmas 8.5 10/11/99 Paseo De La Vista 8.7 10/11/99 Plaza & Manchester 1.9 10/11/99 Pray Street 9 7.522222 21.95 01/10/00 16th Street 1.6 01/10/00 El Toyon Park 1.2 01/10/00 F Street 6.2 01/10/00 I & Woodlawn 8.1 01/10/00 Lynwood 6.1 01/10/00 Newall @ Las Palmas 1.5 01/10/00 Paseo De La Vista 6.5 01/10/00 Plaza & Manchester 3.7 01/10/00 Pray Street 5.2 4.455556 16.60833 04/11/00 10th Street 1.7 04/11/00 16th Street 2.9 04/11/00 El Toyon Park 1.7 04/11/00 F Street 28.6 04/11/00 I & Woodlawn 28.6 04/11/00 J Ave 1.8 04/11/00 Laurel Ave 1.7 04/11/00 Lynwood 28.7 04/11/00 Newall @ Las Palmas 8.5 04/11/00 Paseo De La Vista 29.9 04/11/00 Pray Street 27.4 14.68182 13.6149 07/10/00 109 16th Street, N.C. 20.8 07/10/00 135 Laurel Avenue 1.9 07/10/00 1704 10th Street 2 07/10/00 2121 L Ave 1 07/10/00 2822 N Ave 0 07/10/00 4578 Paseo De La Vista, Bonita 29.8 07/10/00 5747 Pray Street, Bonita 31.6 07/10/00 700 Block of F Street, C.V. 30 07/10/00 721 J Avenue 2.3 07/10/00 927 East 28th Street 0 07/10/00 El Toyon Park, N.C. 1.6 07/10/00 I and Woodlawn, C.V. 32.9 07/10/00 Lynwood and Holly Way, Bonita 33.5 07/10/00 Newell at Las Palmas 19.2 14.75714 10.35418 10/09/00 109 16th Street, N.C. 24.6 10/09/00 135 Laurel Avenue 2 10/09/00 1704 10th Street 2 10/09/00 2121 L Ave 23.3 10/09/00 2822 N Ave 23 10/09/00 4578 Paseo De La Vista, Bonita 24.4 10/09/00 5747 Pray Street, Bonita 24.5 10/09/00 700 Block of F Street, C.V. 25.9 10/09/00 721 J Avenue 2.5 10/09/00 927 East 28th Street 24.9 10/09/00 El Toyon Park, N.C. 2.9 10/09/00 I and Woodlawn, C.V. 24.4 10/09/00 Lynwood and Holly Way, Bonita 27 10/09/00 Newell at Las Palmas 23.4 18.2 13.02363 01/09/01 109 16th Street, N.C. 0 01/09/01 135 Laurel Avenue 1.5 01/09/01 1704 10th Street 1.3 01/09/01 2121 L Ave 0 01/09/01 2822 N Ave 0 01/09/01 4578 Paseo De La Vista, Bonita 5.6 01/09/01 5747 Pray Street, Bonita 5.7 01/09/01 700 Block of F Street, C.V. 5.2 01/09/01 721 J Avenue 1.6 01/09/01 927 East 28th Street 0 Date Sample Point Total HAA5 QA RAA 01/09/01 El Toyon Park, N.C. 1.1 01/09/01 I and Woodlawn, C.V. 5.4 01/09/01 Lynwood and Holly Way, Bonita 8.7 01/09/01 Newell at Las Palmas 3.6 2.835714 12.61867 04/09/01 109 16th Street, N.C. 1.8 04/09/01 135 Laurel Avenue 1.9 04/09/01 1704 10th Street 1.9 04/09/01 2121 L Ave 1.2 04/09/01 2822 N Ave 1 04/09/01 4578 Paseo De La Vista, Bonita 11.8 04/09/01 5747 Pray Street, Bonita 3 04/09/01 700 Block of F Street, C.V. 9.8 04/09/01 721 J Avenue 2 04/09/01 927 East 28th Street 1.2 04/09/01 El Toyon Park, N.C. 1.9 04/09/01 I and Woodlawn, C.V. 12.9 04/09/01 Lynwood and Holly Way, Bonita 0 04/09/01 Newell at Las Palmas 9.3 4.264286 10.01429 08/07/01 109 16th Street, N.C. 18.7 08/07/01 135 Laurel Avenue 1.7 08/07/01 1704 10th Street 1.5 08/07/01 2121 L Ave 5.9 08/07/01 2822 N Ave 6.4 08/07/01 4578 Paseo De La Vista, Bonita 24.7 08/07/01 5747 Pray Street, Bonita 24.5 08/07/01 700 Block of F Street, C.V. 25 08/07/01 721 J Avenue 1.6 08/07/01 927 East 28th Street 6.7 08/07/01 El Toyon Park, N.C. 3.4 08/07/01 I and Woodlawn, C.V. 24.4 08/07/01 Lynwood and Holly Way, Bonita 24.7 08/07/01 Newell at Las Palmas 25.6 13.91429 9.803571 10/15/01 109 16th Street, N.C. 16.6 10/15/01 135 Laurel Avenue 11.1 10/15/01 1704 10th Street 1.4 10/15/01 2121 L Ave 8.8 10/15/01 2822 N Ave 6.1 10/15/01 4578 Paseo De La Vista, Bonita 25.4 10/15/01 5747 Pray Street, Bonita 17.3 10/15/01 700 Block of F Street, C.V. 19.2 10/15/01 721 J Avenue 6 10/15/01 927 East 28th Street 6.2 10/15/01 El Toyon Park, N.C. 5.1 10/15/01 I and Woodlawn, C.V. 20.6 10/15/01 Lynwood and Holly Way, Bonita 23.5 10/15/01 Newell at Las Palmas 18.4 13.26429 8.569643 01/21/02 109 16th Street, N.C. 2.7 01/21/02 135 Laurel Avenue 3.1 01/21/02 1704 10th Street 0 01/21/02 2121 L Ave 0 01/21/02 2822 N Ave 0 01/21/02 368 Anita Street, C.V. 1.5 01/21/02 4578 Paseo De La Vista, Bonita 7.6 01/21/02 601 Sea Vale Street, C.V. 2.3 01/21/02 700 Block of F Street, C.V. 01/21/02 721 J Avenue 1.8 01/21/02 927 East 28th Street 0 01/21/02 El Toyon Park, N.C. 6.9 01/21/02 I and Woodlawn, C.V. 5.7 01/21/02 Lynwood and Holly Way, Bonita 1.5 01/21/02 Newell at Las Palmas 9.5 3.042857 8.621429 04/08/02 109 16th Street, N.C. 2.6 04/08/02 135 Laurel Avenue 0 04/08/02 1704 10th Street 0 04/08/02 2121 L Ave 6.4 04/08/02 2822 N Ave 0 04/08/02 368 Anita Street, C.V. 14.7 04/08/02 4578 Paseo De La Vista, Bonita 14.2 04/08/02 601 Sea Vale Street, C.V. 2.3 04/08/02 700 Block of F Street, C.V. 14.6 04/08/02 721 J Avenue 1.2 04/08/02 927 East 28th Street 0 04/08/02 El Toyon Park, N.C. 0 04/08/02 I and Woodlawn, C.V. 15.5 04/08/02 Lynwood and Holly Way, Bonita 14.4 04/08/02 Newell at Las Palmas 7.4 6.22 9.110357 07/16/02 109 16th Street, N.C. 3.5 07/16/02 135 Laurel Avenue 20.7 07/16/02 1704 10th Street 25.2 07/16/02 2121 L Ave 1 07/16/02 2822 N Ave 5 07/16/02 368 Anita Street, C.V. 6.3 07/16/02 4578 Paseo De La Vista, Bonita 10.2 07/16/02 601 Sea Vale Street, C.V. 2.4 07/16/02 700 Block of F Street, C.V. 6.3 07/16/02 721 J Avenue 3 07/16/02 927 East 28th Street 0 07/16/02 El Toyon Park, N.C. 19.7 07/16/02 I and Woodlawn, C.V. 7.8 07/16/02 Lynwood and Holly Way, Bonita 9.8 07/16/02 Newell at Las Palmas 9 8.66 7.796786 10/14/02 109 16th Street, N.C. 15.6 10/14/02 135 Laurel Avenue 5.2 10/14/02 1704 10th Street 4.6 Date Sample Point Total HAA5 QA RAA 10/14/02 2121 L Ave 17 10/14/02 2822 N Ave 2.9 10/14/02 368 Anita Street, C.V. 16.4 10/14/02 4578 Paseo De La Vista, Bonita 16.2 10/14/02 601 Sea Vale Street, C.V. 5.3 10/14/02 700 Block of F Street, C.V. 10.2 10/14/02 721 J Avenue 14 10/14/02 927 East 28th Street 1.3 10/14/02 El Toyon Park, N.C. 6.5 10/14/02 I and Woodlawn, C.V. 15.9 10/14/02 Lynwood and Holly Way, Bonita 16.5 10/14/02 Newell at Las Palmas 15.6 10.88 7.200714 01/14/03 109 16th Street, N.C. 26.7 01/14/03 135 Laurel Avenue 2.5 01/14/03 1704 10th Street 2.5 01/14/03 2121 L Ave 16.3 01/14/03 2822 N Ave 2.2 01/14/03 368 Anita Street, C.V. 27.9 01/14/03 4578 Paseo De La Vista, Bonita 23.5 01/14/03 601 Sea Vale Street, C.V. 0 01/14/03 700 Block of F Street, C.V. 27.1 01/14/03 721 J Avenue 3.9 01/14/03 927 East 28th Street 0 01/14/03 El Toyon Park, N.C. 2.2 01/14/03 I and Woodlawn, C.V. 28.9 01/14/03 Lynwood and Holly Way, Bonita 27.8 01/14/03 Newell at Las Palmas 29.5 14.73333 10.12333 04/14/03 109 16th Street, N.C. 10.7 04/14/03 135 Laurel Avenue 6.2 04/14/03 1704 10th Street 17.9 04/14/03 2121 L Ave 11.8 04/14/03 2822 N Ave 0 04/14/03 368 Anita Street, C.V. 18.4 04/14/03 4578 Paseo De La Vista, Bonita 18.1 04/14/03 601 Sea Vale Street, C.V. 3.4 04/14/03 700 Block of F Street, C.V. 15.2 04/14/03 721 J Avenue 7.9 04/14/03 927 East 28th Street 0 04/14/03 El Toyon Park, N.C. 4.3 04/14/03 I and Woodlawn, C.V. 17.3 04/14/03 Lynwood and Holly Way, Bonita 17 04/14/03 Newell at Las Palmas 16.8 11 11.31833 07/14/03 109 16th Street, N.C. 23.71 07/14/03 135 Laurel Avenue 9.89 07/14/03 1704 10th Street 5.89 07/14/03 2121 L Ave 17.39 07/14/03 2822 N Ave 21.03 07/14/03 368 Anita Street, C.V. 25.15 07/14/03 4578 Paseo De La Vista, Bonita 24 07/14/03 601 Sea Vale Street, C.V. 15.83 07/14/03 700 Block of F Street, C.V. 23.04 07/14/03 721 J Avenue 11.03 07/14/03 927 East 28th Street 24.22 07/14/03 El Toyon Park, N.C. 28.29 07/14/03 I and Woodlawn, C.V. 16.68 07/14/03 Lynwood and Holly Way, Bonita 25.21 07/14/03 Newell at Las Palmas 21.69 19.53667 14.0375 10/13/03 109 16th Street, N.C. 16.21 10/13/03 1704 10th Street 9.82 10/13/03 2121 L Ave 26.72 10/13/03 2822 N Ave 4.207 10/13/03 368 Anita Street, C.V. 16.81 10/13/03 4578 Paseo De La Vista, Bonita 15.16 10/13/03 601 Sea Vale Street, C.V. 3.224 10/13/03 700 Block of F Street, C.V. 12.67 10/13/03 721 J Avenue 10.34 10/13/03 927 East 28th Street 3.95 10/13/03 El Toyon Park, N.C. 8.49 10/13/03 I and Woodlawn, C.V. 12.19 10/13/03 Lynwood and Holly Way, Bonita 11.69 10/13/03 Newell at Las Palmas 12.03 11.67936 14.23734 01/13/04 109 16th Street, N.C. 10.93 01/13/04 135 Laurel Avenue 8.36 01/13/04 1704 10th Street 15.26 01/13/04 2121 L Ave 7.48 01/13/04 2822 N Ave 19.67 01/13/04 368 Anita Street, C.V. 5.89 01/13/04 4578 Paseo De La Vista, Bonita 9.14 01/13/04 601 Sea Vale Street, C.V. 19.17 01/13/04 700 Block of F Street, C.V. 13.1 01/13/04 721 J Avenue 10.99 01/13/04 927 East 28th Street 2.722 01/13/04 El Toyon Park, N.C. 20.51 01/13/04 I and Woodlawn, C.V. 11.19 01/13/04 Lynwood and Holly Way, Bonita 14 01/13/04 Newell at Las Palmas 13.26 12.11147 13.58187 04/12/04 109 16th Street, N.C. 0 04/12/04 135 Laurel Avenue 0 04/12/04 1704 10th Street 0 04/12/04 2121 L Ave 4.51 04/12/04 2822 N Ave 5.573 04/12/04 368 Anita Street, C.V. 0 04/12/04 4578 Paseo De La Vista, Bonita 12.013 04/12/04 601 Sea Vale Street, C.V. 1.35 Date Sample Point Total HAA5 QA RAA 04/12/04 700 Block of F Street, C.V. 12.48 04/12/04 721 J Avenue 0 04/12/04 927 East 28th Street 1.49 04/12/04 El Toyon Park, N.C. 0 04/12/04 I and Woodlawn, C.V. 4.818 04/12/04 Lynwood and Holly Way, Bonita 2.81 04/12/04 Newell at Las Palmas 7.167 3.480733 11.70206 07/13/04 109 16th Street, N.C. 23.39 07/13/04 135 Laurel Avenue 0 07/13/04 1704 10th Street 0 07/13/04 2121 L Ave 18.996 07/13/04 2822 N Ave 0 07/13/04 368 Anita Street, C.V. 17.1 07/13/04 4578 Paseo De La Vista, Bonita 23.32 07/13/04 601 Sea Vale Street, C.V. 3.298 07/13/04 700 Block of F Street, C.V. 9.155 07/13/04 721 J Avenue 12.2 07/13/04 927 East 28th Street 2.064 07/13/04 El Toyon Park, N.C. 9.11 07/13/04 I and Woodlawn, C.V. 17.8 07/13/04 Lynwood and Holly Way, Bonita 17.93 07/13/04 Newell at Las Palmas 23.14 11.83353 9.776273 10/11/04 109 16th Street, N.C. 9.59 10/11/04 135 Laurel Avenue 0 10/11/04 1704 10th Street 4.64 10/11/04 2121 L Ave 9.83 10/11/04 2822 N Ave 9.91 10/11/04 368 Anita Street, C.V. 10.779 10/11/04 4578 Paseo De La Vista, Bonita 9.24 10/11/04 601 Sea Vale Street, C.V. 4.646 10/11/04 700 Block of F Street, C.V. 7.55 10/11/04 721 J Avenue 1.84 10/11/04 927 East 28th Street 1.76 10/11/04 El Toyon Park, N.C. 1.74 10/11/04 I and Woodlawn, C.V. 10.51 10/11/04 Lynwood and Holly Way, Bonita 8.35 10/11/04 Newell at Las Palmas 10.77 6.743667 8.54235 01/11/05 109 16th Street, N.C. 4.24 01/11/05 135 Laurel Avenue 13.72 01/11/05 1704 10th Street 14.21 01/11/05 2121 L Ave 3.75 01/11/05 2822 N Ave 5.34 01/11/05 368 Anita Street, C.V. 8.93 01/11/05 4578 Paseo De La Vista, Bonita 16.71 01/11/05 601 Sea Vale Street, C.V. 4.79 01/11/05 700 Block of F Street, C.V. 12.42 01/11/05 721 J Avenue 13.22 01/11/05 927 East 28th Street 4.78 01/11/05 El Toyon Park, N.C. 10.02 01/11/05 I and Woodlawn, C.V. 13.19 01/11/05 Lynwood and Holly Way, Bonita 19.39 01/11/05 Newell at Las Palmas 12.92 10.50867 8.14165 04/11/05 109 16th Street, N.C. 31.46 04/11/05 135 Laurel Avenue 36.15 04/11/05 1704 10th Street 28.53 04/11/05 2121 L Ave 38.74 04/11/05 2822 N Ave 51.54 04/11/05 368 Anita Street, C.V. 32.25 04/11/05 4578 Paseo De La Vista, Bonita 40.66 04/11/05 601 Sea Vale Street, C.V. 25.99 04/11/05 700 Block of F Street, C.V. 33.6 04/11/05 721 J Avenue 28.48 04/11/05 927 East 28th Street 24.07 04/11/05 El Toyon Park, N.C. 31.45 04/11/05 I and Woodlawn, C.V. 27.21 04/11/05 Lynwood and Holly Way, Bonita 46 04/11/05 Newell at Las Palmas 33.27 33.96 15.76147 07/11/05 109 16th Street, N.C. 11.17 07/11/05 135 Laurel Avenue 0 07/11/05 1704 10th Street 8.16 07/11/05 2121 L Ave 10.71 07/11/05 2822 N Ave 5.34 07/11/05 368 Anita Street, C.V. 16.79 07/11/05 4578 Paseo De La Vista, Bonita 13.07 07/11/05 601 Sea Vale Street, C.V. 9.46 07/11/05 700 Block of F Street, C.V. 11.41 07/11/05 721 J Avenue 4.91 07/11/05 927 East 28th Street 3.91 07/11/05 El Toyon Park, N.C. 1.23 07/11/05 I and Woodlawn, C.V. 15.5 07/11/05 Lynwood and Holly Way, Bonita 19.25 07/11/05 Newell at Las Palmas 12.18 9.539333 15.18792 10/10/05 109 16th Street, N.C. 30.6 10/10/05 135 Laurel Avenue 6.77 10/10/05 1704 10th Street 7.84 10/10/05 2121 L Ave 13.78 10/10/05 2822 N Ave 5.8 10/10/05 368 Anita Street, C.V. 29.54 10/10/05 4578 Paseo De La Vista, Bonita 30.82 10/10/05 601 Sea Vale Street, C.V. 3.1 10/10/05 700 Block of F Street, C.V. 30.53 10/10/05 721 J Avenue 1.29 10/10/05 927 East 28th Street 5.31 10/10/05 El Toyon Park, N.C. 7.86 Date Sample Point Total HAA5 QA RAA 10/10/05 I and Woodlawn, C.V. 16.94 10/10/05 Lynwood and Holly Way, Bonita 31.43 10/10/05 Newell at Las Palmas 24.52 11/14/05 109 16th Street, N.C. 33.23 11/14/05 135 Laurel Avenue 5.97 11/14/05 1704 10th Street 32.2 11/14/05 2121 L Ave 1.63 11/14/05 2822 N Ave 1.74 11/14/05 368 Anita Street, C.V. 37.5 11/14/05 4578 Paseo De La Vista, Bonita 23.7 11/14/05 601 Sea Vale Street, C.V. 15.71 11/14/05 700 Block of F Street, C.V. 24.37 11/14/05 721 J Avenue 30 11/14/05 927 East 28th Street 2.2 11/14/05 El Toyon Park, N.C. 3.1 11/14/05 I and Woodlawn, C.V. 41.84 11/14/05 Lynwood and Holly Way, Bonita 41.7 11/14/05 Newell at Las Palmas 26.14 18.90533 18.22833 01/09/06 109 16th Street, N.C. 30.99 01/09/06 135 Laurel Avenue 1.09 01/09/06 1704 10th Street 1.1 01/09/06 2121 L Ave 21.82 01/09/06 2822 N Ave 4.05 01/09/06 368 Anita Street, C.V. 18.65 01/09/06 4578 Paseo De La Vista, Bonita 33.13 01/09/06 601 Sea Vale Street, C.V. 7.13 01/09/06 700 Block of F Street, C.V. 30.47 01/09/06 721 J Avenue 1.23 01/09/06 927 East 28th Street 0 01/09/06 El Toyon Park, N.C. 1.28 01/09/06 I and Woodlawn, C.V. 27.78 01/09/06 Lynwood and Holly Way, Bonita 15.75 01/09/06 Newell at Las Palmas 20.15 14.308 19.17817 04/10/06 109 16th Street, N.C. 12.87 04/10/06 135 Laurel Avenue 2.82 04/10/06 1704 10th Street 7.35 04/10/06 2121 L Ave 10.72 04/10/06 2822 N Ave 5.24 04/10/06 368 Anita Street, C.V. 15.02 04/10/06 4578 Paseo De La Vista, Bonita 27.13 04/10/06 601 Sea Vale Street, C.V. 1.59 04/10/06 700 Block of F Street, C.V. 18.43 04/10/06 721 J Avenue 7.31 04/10/06 927 East 28th Street 2 04/10/06 El Toyon Park, N.C. 10.15 04/10/06 I and Woodlawn, C.V. 20.89 04/10/06 Lynwood and Holly Way, Bonita 20.2 04/10/06 Newell at Las Palmas 10.18 11.46 13.55317 07/10/06 109 16th Street, N.C. 26.49 07/10/06 135 Laurel Avenue 33.07 07/10/06 1704 10th Street 30.14 07/10/06 2121 L Ave 25.87 07/10/06 2822 N Ave 28.3 07/10/06 368 Anita Street, C.V. 32.74 07/10/06 4578 Paseo De La Vista, Bonita 43.9 07/10/06 601 Sea Vale Street, C.V. 21.04 07/10/06 700 Block of F Street, C.V. 27.86 07/10/06 721 J Avenue 23.82 07/10/06 927 East 28th Street 4 07/10/06 El Toyon Park, N.C. 28.55 07/10/06 I and Woodlawn, C.V. 33.62 07/10/06 Lynwood and Holly Way, Bonita 23.82 07/10/06 Newell at Las Palmas 28.32 08/21/06 109 16th Street, N.C. 65.88 08/21/06 131 East Quintard 84.6 08/21/06 135 Laurel Avenue 0 08/21/06 1501 Jasper 81.47 08/21/06 1704 10th Street 1.27 08/21/06 2121 L Ave 70.55 08/21/06 214 J St. 83.59 08/21/06 2295 Main St 84.12 08/21/06 2801 8th Street 60.92 08/21/06 2822 N Ave 18.84 08/21/06 298 Greenwood Pl. 67.74 08/21/06 3310 Lynwood 81.54 08/21/06 368 Anita Street, C.V. 84.57 08/21/06 4578 Paseo De La Vista, Bonita 48.97 08/21/06 468 Oxford 95.39 08/21/06 5378 Carolyn Vista Lane 90.97 08/21/06 5727 Sunny View 77.51 08/21/06 601 Sea Vale Street, C.V. 42.48 08/21/06 700 Block of F Street, C.V. 67.73 08/21/06 721 J Avenue 0 08/21/06 927 East 28th Street 15.56 08/21/06 El Toyon Park, N.C. 0 08/21/06 I and Woodlawn, C.V. 51.98 08/21/06 Lynwood and Holly Way, Bonita 70.28 08/21/06 N.C. Well Plant Effluent 2.57 08/21/06 Naples and Melrose 83.15 08/21/06 Newell at Las Palmas 41.42 08/21/06 Rawhide Court 99.36 08/21/06 SWA Office @ Garrett Ave 71.95 46.72614 22.84987 10/09/06 109 16th Street, N.C. 11.53 10/09/06 131 East Quintard 20.46 Date Sample Point Total HAA5 QA RAA 10/09/06 135 Laurel Avenue 1.28 10/09/06 1501 Jasper 18.37 10/09/06 1704 10th Street 1.19 10/09/06 2121 L Ave 12.43 10/09/06 214 J St. 18.96 10/09/06 2295 Main St 15.01 10/09/06 2801 8th Street 17.24 10/09/06 2822 N Ave 0 10/09/06 298 Greenwood Pl. 12.95 10/09/06 3310 Lynwood 15.62 10/09/06 368 Anita Street, C.V. 24.7 10/09/06 4578 Paseo De La Vista, Bonita 12.99 10/09/06 468 Oxford 13.89 10/09/06 5378 Carolyn Vista Lane 13.26 10/09/06 5727 Sunny View 18.63 10/09/06 601 Sea Vale Street, C.V. 1.98 10/09/06 700 Block of F Street, C.V. 7.12 10/09/06 721 J Avenue 1.11 10/09/06 927 East 28th Street 0 10/09/06 El Toyon Park, N.C. 0 10/09/06 I and Woodlawn, C.V. 19.96 10/09/06 Lynwood and Holly Way, Bonita 21.99 10/09/06 N.C. Well Plant Effluent 1.98 10/09/06 Naples and Melrose 14.15 10/09/06 Newell at Las Palmas 0 10/09/06 Rawhide Court 15.11 10/09/06 SWA Office @ Garrett Ave 17 11.34172 20.95897

Min 0.00 2.84 7.20 Max 99.36 46.73 22.85 Average 15.86 14.09 12.98 Pre Average 11.94 12.52 21.95 Post Average 21.29 17.53 22.85 Count per 10 Fields of Vision Date Species Sweetwater Reservoir Daily Count per mL # Species 03/26/03 Chlamydomonas 90 0.316 2 03/26/03 Anabaena Flos Aquae 68 04/23/03 Fragilaria 135 0.32 5 04/23/03 Anabaena Flos Aquae 12 04/23/03 Astreionella 6 04/23/03 Anabaenopsis 5 04/23/03 Ceratium 2 04/30/03 Fragilaria 57 0.166 6 04/30/03 Astreionella 18 04/30/03 Coelostrum 4 04/30/03 Anabaena Flos Aquae 2 04/30/03 Euglena 2 04/30/03 Ceratium 1 05/07/03 Fragilaria 10 0.038 2 05/07/03 Coelostrum 9 05/14/03 Anabaena Sporoides 2 0.004 1 05/23/03 Anabaenopsis 31 0.096 2 05/23/03 Anabaena Sporoides 17 05/27/03 Anabaenopsis 73 0.21 2 05/27/03 Anabaena Sporoides 32 05/28/03 Anabaena Sporoides 61 0.122 1 05/29/03 Anabaena Sporoides 13 0.026 1 06/05/03 Fragilaria 1 0.002 1 06/10/03 Fragilaria 2 0.006 3 06/10/03 Dinobryon 1 06/16/03 Pediastrum 1 0.002 1 06/19/03 Staurastrum 1 0.002 1 06/23/03 Staurastrum 2 0.006 2 06/23/03 Scenedesmus 1 07/01/03 Volvox 2 0.01 4 07/01/03 Ceratium 1 07/01/03 Scenedesmus 1 07/01/03 Staurastrum 1 07/07/03 Anabaena Sporoides 4 0.018 5 07/07/03 Anacystis 2 07/07/03 Nitella 1 07/07/03 Scenedesmus 1 07/07/03 Staurastrum 1 07/16/03 Anacystis 2 0.006 2 07/16/03 Pediastrum 1 07/28/03 Anabaenopsis 2 0.004 1 07/30/03 Anabaenopsis 12 0.034 3 07/30/03 Rotifer 3 07/30/03 Ankistrodesmus 2 08/07/03 Anabaenopsis 14 0.04 3 08/07/03 Anabaena Sporoides 5 08/07/03 Rotifer 1 08/13/03 Anabaena Sporoides 18 0.048 4 08/13/03 Anabaenopsis 4 08/13/03 Rotifer 1 08/13/03 Scenedesmus 1 08/21/03 Anabaena Sporoides 15 0.056 3 08/21/03 Rotifer 10 08/21/03 Anabaenopsis 3 08/27/03 Anabaenopsis 11 0.036 3 08/27/03 Rotifer 6 08/27/03 Anabaena Sporoides 1 09/05/03 Anabaenopsis 5 0.016 2 09/05/03 Scenedesmus 3 09/12/03 Anabaenopsis 21 0.05 3 09/12/03 Rotifer 3 09/12/03 Anabaena Sporoides 1 09/19/03 Anabaenopsis 17 0.036 2 09/19/03 Anabaena Sporoides 1 09/26/03 Anabaenopsis 5 0.024 4 09/26/03 Anabaena Sporoides 4 09/26/03 Rotifer 2 09/26/03 Scenedesmus 1 10/10/03 Euglena 5 0.016 4 10/10/03 Anabaenopsis 1 10/10/03 Rotifer 1 10/10/03 Scenedesmus 1 10/17/03 Rotifer 27 0.056 2 10/17/03 Euglena 1 10/21/03 Anabaenopsis 3 0.014 5 10/21/03 Coelostrum 1 10/21/03 Euglena 1 10/21/03 Scenedesmus 1 10/21/03 Sphaerocystis 1 10/31/03 Euglena 2 0.01 4 10/31/03 Rotifer 1 10/31/03 Scenedesmus 1 10/31/03 Staurastrum 1 11/14/03 Rotifer 57 0.12 2 11/14/03 Scenedesmus 3 12/05/03 Scenedesmus 9 0.024 3 12/05/03 Zygnema 2 12/05/03 Rotifer 1 12/12/03 Euglena 1 0.004 2 12/12/03 Rotifer 1 12/19/03 Rotifer 6 0.016 2 12/19/03 Scenedesmus 2 01/02/04 Rotifer 51 0.124 4 01/02/04 Euglena 6 01/02/04 Scenedesmus 4 01/02/04 Anabaenopsis 1 01/16/04 Rotifer 87 0.25 4 01/16/04 Trachelomonas 26 01/16/04 Scenedesmus 8 01/16/04 Euglena 4 01/23/04 Trachelomonas 47 0.192 5 01/23/04 Rotifer 40 01/23/04 Scenedesmus 6 01/23/04 Euglena 2 01/23/04 Staurastrum 1 01/30/04 Trachelomonas 17 0.058 5 01/30/04 Scenedesmus 7 01/30/04 Euglena 2 01/30/04 Rotifer 2 01/30/04 Gomphosphaeria 1 02/20/04 Trachelomonas 14 0.046 5 02/20/04 Rotifer 4 02/20/04 Scenedesmus 3 02/20/04 Euglena 1 02/20/04 Tetraspora 1 02/27/04 Euglena 2 0.008 2 02/27/04 Trachelomonas 2 03/05/04 Euglena 46 0.114 4 03/05/04 Trachelomonas 7 03/05/04 Rotifer 2 03/05/04 Scenedesmus 2 03/15/04 Euglena 23 0.056 3 03/15/04 Coelostrum 4 03/15/04 Trachelomonas 1 03/25/04 Euglena 25 0.13 5 03/25/04 Mougeotia 25 03/25/04 Astreionella 11 03/25/04 Anabaena Sporoides 3 03/25/04 Pediastrum 1 04/02/04 Spirogyra 37 0.084 2 04/02/04 Astreionella 5 04/09/04 Euglena 28 0.118 6 04/09/04 Spirogyra 13 04/09/04 Anabaena Flos Aquae 6 04/09/04 Fragilaria 5 04/09/04 Astreionella 4 04/09/04 Rotifer 3 04/16/04 Fragilaria 81 0.22 5 04/16/04 Spirogyra 13 04/16/04 Astreionella 11 04/16/04 Euglena 4 04/16/04 Rotifer 1 04/23/04 Fragilaria 39 0.084 2 04/23/04 Astreionella 3 05/25/04 Rotifer 3 0.024 6 05/25/04 Staurastrum 3 05/25/04 Anacystis 2 05/25/04 Fragilaria 2 05/25/04 Gomphosphaeria 1 05/25/04 Oocysts 1 06/02/04 Anabaena Sporoides 9 0.05 6 06/02/04 Ceratium 4 06/02/04 Anacystis 3 06/02/04 Fragilaria 3 06/02/04 Gomphosphaeria 3 06/02/04 Staurastrum 3 06/04/04 Anabaena Sporoides 10 0.02 1 06/07/04 Anacystis 12 0.062 7 06/07/04 Coelostrum 8 06/07/04 Fragilaria 3 06/07/04 Rotifer 3 06/07/04 Staurastrum 3 06/07/04 Anabaena Flos Aquae 1 06/07/04 Pandorina 1 06/09/04 Anacystis 34 0.076 3 06/09/04 Ceratium 2 06/09/04 Fragilaria 2 06/10/04 Anabaena Flos Aquae 2 0.004 1 06/15/04 Anacystis 19 0.056 3 06/15/04 Rotifer 6 06/15/04 Ceratium 3 06/21/04 Anacystis 6 0.018 2 06/21/04 Rotifer 3 06/30/04 Bulbochaete 27 0.066 3 06/30/04 Rotifer 5 06/30/04 Anacystis 1 07/08/04 Anabaena Planctonica 18 0.076 4 07/08/04 Bulbochaete 13 07/08/04 Euglena 4 07/08/04 Anabaenopsis 3 07/14/04 Anabaena Planctonica 151 0.386 4 07/14/04 Rotifer 25 07/14/04 Anabaenopsis 16 07/14/04 Anabaena Flos Aquae 1 07/20/04 Anabaenopsis 53 0.182 4 07/20/04 Rotifer 20 07/20/04 Anabaena Planctonica 16 07/20/04 Anabaena Flos Aquae 2 07/28/04 Anabaenopsis 11 0.058 4 07/28/04 Anabaena Flos Aquae 9 07/28/04 Bulbochaete 6 07/28/04 Euglena 3 08/03/04 Anabaenopsis 47 0.164 6 08/03/04 Rotifer 25 08/03/04 Anabaena Flos Aquae 7 08/03/04 Anabaena Planctonica 1 08/03/04 Anabaena Sporoides 1 08/03/04 Scenedesmus 1 08/11/04 Rotifer 18 0.058 2 08/11/04 Anabaenopsis 11 08/24/04 Anabaenopsis 25 0.052 2 08/24/04 Euglena 1 08/26/04 Anabaenopsis 8 0.02 2 08/26/04 Trachelomonas 2 09/01/04 Anabaenopsis 16 0.032 1 09/17/04 Anabaena Flos Aquae 56 0.14 2 09/17/04 Trachelomonas 14 09/22/04 Anabaena Flos Aquae 324 0.648 1 02/25/05 Euglena 152 0.304 1 03/16/05 Rotifer 500 1.226 3 03/16/05 Euglena 110 03/16/05 Anabaena Sporoides 3 03/22/05 Urothrix Aequalis 34 0.124 4 03/22/05 Coelostrum 20 03/22/05 Euglena 7 03/22/05 Astreionella 1 03/24/05 Nodularia 42 0.124 5 03/24/05 Rotifer 7 03/24/05 Coelostrum 6 03/24/05 Euglena 6 03/24/05 Pediastrum 1 03/29/05 Euglena 13 0.05 4 03/29/05 Pediastrum 9 03/29/05 Nodularia 2 03/29/05 Coelostrum 1 04/05/05 Euglena 17 0.056 4 04/05/05 Coelostrum 7 04/05/05 Nodularia 3 04/05/05 Pediastrum 1 04/12/05 Rotifer 7500 15.226 4 04/12/05 Anabaena Flos Aquae 96 04/12/05 Anabaenopsis 12 04/12/05 Nodularia 5 04/14/05 Rotifer 7500 15.242 3 04/14/05 Anabaena Flos Aquae 119 04/14/05 Euglena 2 04/20/05 Rotifer 85 0.198 4 04/20/05 Nodularia 7 04/20/05 Coelostrum 5 04/20/05 Anabaena Flos Aquae 2 05/02/05 Euglena 107 0.386 6 05/02/05 Anabaena Flos Aquae 48 05/02/05 Rotifer 26 05/02/05 Anacystis 8 05/02/05 Anabaenopsis 3 05/02/05 Aphanlzomenon 1 05/10/05 Anabaena Flos Aquae 105 0.36 4 05/10/05 Anacystis 52 05/10/05 Aphanlzomenon 21 05/10/05 Anabaena Sporoides 2 05/11/05 Asterionella 29 0.094 3 05/11/05 Anabaena Flos Aquae 14 05/11/05 Anacystis 4 05/12/05 Anabaena Flos Aquae 16 0.052 2 05/12/05 Aphanlzomenon 10 05/13/05 Anabaena Flos Aquae 19 0.074 4 05/13/05 Asterionella 13 05/13/05 Anabaenopsis 3 05/13/05 Aphanlzomenon 2 05/18/05 Anabaena Flos Aquae 58 0.244 5 05/18/05 Anabaenopsis 50 05/18/05 Aphanlzomenon 7 05/18/05 Anacystis 6 05/18/05 Anabaena Sporoides 1 05/20/05 Anabaenopsis 109 0.394 4 05/20/05 Anabaena Circinalis 84 05/20/05 Anacystis 3 05/20/05 Anabaena Sporoides 1 05/23/05 Anabaena Circinalis 161 0.768 6 05/23/05 Anabaena Circinalis 113 05/23/05 Anabaena Circinalis 104 05/23/05 Anabaena Sporoides 4 05/23/05 Anabaena Sporoides 1 05/23/05 Anabaena Sporoides 1 05/24/05 Anabaena Circinalis 114 0.94 15 05/24/05 Anabaena Circinalis 70 05/24/05 Anabaena Circinalis 65 05/24/05 Anabaenopsis 58 05/24/05 Anabaena Sporoides 52 05/24/05 Anabaena Sporoides 45 05/24/05 Anabaena Flos Aquae 15 05/24/05 Anabaena Flos Aquae 13 05/24/05 Anabaena Flos Aquae 9 05/24/05 Aphanlzomenon 9 05/24/05 Anacystis 7 05/24/05 Aphanlzomenon 7 05/24/05 Anacystis 5 05/24/05 Anacystis 1 05/24/05 Anabaena Sporoides 0 05/25/05 Anabaena Circinalis 31 0.126 4 05/25/05 Anabaena Circinalis 27 05/25/05 Aphanlzomenon 3 05/25/05 Anabaena Sporoides 2 05/26/05 Anabaena Circinalis 20 0.064 3 05/26/05 Anabaena Flos Aquae 10 05/26/05 Aphanlzomenon 2 05/27/05 Anabaena Circinalis 19 0.058 4 05/27/05 Anabaena Flos Aquae 5 05/27/05 Aphanlzomenon 4 05/27/05 Anabaena Sporoides 1 05/31/05 Aphanlzomenon 33 0.11 4 05/31/05 Anabaena Circinalis 12 05/31/05 Anabaena Flos Aquae 9 05/31/05 Anabaena Sporoides 1 06/01/05 Anabaena Flos Aquae 9 0.04 4 06/01/05 Aphanlzomenon 7 06/01/05 Anabaena Circinalis 3 06/01/05 Anabaena Sporoides 1 06/02/05 Anabaena Circinalis 3 0.014 3 06/02/05 Aphanlzomenon 3 06/02/05 Anabaena Sporoides 1 06/03/05 Ceratium 5 0.03 6 06/03/05 Anabaena Circinalis 4 06/03/05 Anabaena Sporoides 3 06/03/05 Anabaena Flos Aquae 1 06/03/05 Anabaenopsis 1 06/03/05 Aphanlzomenon 1 06/06/05 Anabaena Circinalis 1 0.002 1 06/07/05 Euglena 37 0.08 4 06/07/05 Ceratium 2 06/07/05 Aphanlzomenon 1 06/07/05 Anabaena Circinalis 0 06/09/05 Euglena 18 0.042 2 06/09/05 Ceratium 3 06/13/05 Euglena 39 0.078 1 06/16/05 Euglena 38 0.086 2 06/16/05 dinobryon 5 06/29/05 Anabaenopsis 14 0.028 1 07/08/05 anlcistrodesmus 380 0.776 2 07/08/05 Euglena 8 07/29/05 Anabaenopsis 4 0.012 2 07/29/05 Euglena 2 08/05/05 Anabaenopsis 6 0.012 1 08/08/05 Anabaenopsis 7 0.014 1 08/17/05 Anabaenopsis 1 0.002 1 08/25/05 anabaena (not specified) 3 0.006 1 08/30/05 dinobryon 2 0.004 1 09/20/05 dinobryon 7 0.02 1 09/20/05 Anabaenopsis 3 0.006 1 09/23/05 Anabaenopsis 7 0.032 4 09/23/05 Anacystis 4 09/23/05 Euglena 3 09/23/05 Trachelomonas 2 09/29/05 Anabaenopsis 1 0.002 1 10/07/05 Anabaenopsis 23 0.334 16 10/07/05 carteria 20 10/07/05 Euglena 20 10/07/05 Anabaenopsis 16 10/07/05 Euglena 15 10/07/05 carteria 14 10/07/05 carteria 9 10/07/05 carteria 9 10/07/05 carteria 8 10/07/05 Anabaenopsis 6 10/07/05 Anabaenopsis 6 10/07/05 Anacystis 6 10/07/05 Euglena 6 10/07/05 Euglena 5 10/07/05 Anabaenopsis 2 10/07/05 Euglena 2 10/17/05 pseudanabaena 440 0.88 1 10/18/05 pseudanabaena 330 0.66 1 10/19/05 pseudanabaena 498 1.148 4 10/19/05 Ankistrodesmus 64 10/19/05 Anabaena Circinalis 11 10/19/05 Euglena 1 10/20/05 pseudanabaena 257 0.514 1 10/21/05 pseudanabaena 223 0.446 1 10/24/05 pseudanabaena 48 0.096 1 10/28/05 carteria 89 0.266 4 10/28/05 trachelomonas 23 10/28/05 eudorina 14 10/28/05 rotifers 7 11/02/05 pseudanabaena 25 0.13 4 11/02/05 Ankistrodesmus 24 11/02/05 carteria 11 11/02/05 Trachelomonas 5 11/09/05 carteria 158 0.446 3 11/09/05 Chlamydomonas 58 11/09/05 Trachelomonas 7 11/15/05 Anacystis 1129 2.636 4 11/15/05 carteria 179 11/15/05 Trachelomonas 9 11/15/05 Euglena 1 11/22/05 Anacystis 96 0.192 1 11/30/05 Anacystis 7500 15.12 4 11/30/05 Chlamydomonas 30 11/30/05 carteria 25 11/30/05 Trachelomonas 5 12/15/05 Anacystis 981 2.094 4 12/15/05 Chlamydomonas 34 12/15/05 Ankistrodesmus 21 12/15/05 Trachelomonas 11 12/22/05 Chlamydomonas 500 1.87 3 12/22/05 Anacystis 425 12/22/05 Scenedesmus 10 01/06/06 Chlamydomonas 1200 4.024 5 01/06/06 Anacystis 761 01/06/06 Ankistrodesmus 38 01/06/06 Trachelomonas 10 01/06/06 Euglena 3 01/09/06 chlorella 73 0.208 3 01/09/06 Chlamydomonas 28 01/09/06 Trachelomonas 3 01/12/06 Anacystis 227 1.044 4 01/12/06 Chlamydomonas 189 01/12/06 Ankistrodesmus 91 01/12/06 Trachelomonas 15 01/17/06 Chlamydomonas 99 0.66 6 01/17/06 Anacystis 92 01/17/06 Spirogyra 73 01/17/06 Ankistrodesmus 36 01/17/06 Trachelomonas 24 01/17/06 Euglena 6 01/24/06 Anacystis 81 0.524 7 01/24/06 Chlamydomonas 65 01/24/06 Spirogyra 36 01/24/06 Ankistrodesmus 35 01/24/06 Trachelomonas 20 01/24/06 Euglena 15 01/24/06 Scenedesmus 10 02/02/06 chlorella 107 0.758 9 02/02/06 Euglena 67 02/02/06 synedra 50 02/02/06 Chlamydomonas 46 02/02/06 Ankistrodesmus 30 02/02/06 Scenedesmus 29 02/02/06 Anacystis 27 02/02/06 Trachelomonas 13 02/02/06 Spirogyra 10 02/08/06 Ankistrodesmus 314 1.666 8 02/08/06 synedra 314 02/08/06 Euglena 54 02/08/06 chlorella 50 02/08/06 Chlamydomonas 40 02/08/06 Anacystis 31 02/08/06 Scenedesmus 19 02/08/06 Trachelomonas 11 02/16/06 Ankistrodesmus 546 1.854 9 02/16/06 chlorella 90 02/16/06 Anacystis 73 02/16/06 Scenedesmus 73 02/16/06 Chlamydomonas 56 02/16/06 carteria 53 02/16/06 Euglena 19 02/16/06 Trachelomonas 15 02/16/06 dinobryon 2 03/02/06 Ankistrodesmus 106 0.57 9 03/02/06 carteria 46 03/02/06 chlorella 29 03/02/06 Chlamydomonas 27 03/02/06 Anacystis 22 03/02/06 Scenedesmus 19 03/02/06 trachelomonas 17 03/02/06 Euglena 16 03/02/06 dinobryon 3 03/09/06 chlorogonium 61 0.186 5 03/09/06 Euglena 27 03/09/06 Ankistrodesmus 2 03/09/06 chlorella 2 03/09/06 trachelomonas 1 03/16/06 Euglena 17 0.066 2 03/16/06 chlorogonium 16 03/28/06 chlorococcum 4 0.014 4 03/28/06 chlorogonium 2 03/28/06 Anacystis 1 03/28/06 Ankistrodesmus 0 04/04/06 Anabaena Flos Aquae 297 0.782 5 04/04/06 asterionella 26 04/04/06 Euglena 26 04/04/06 Anacystis 22 04/04/06 Spirogyra 20 04/10/06 Anabaena Flos Aquae 731 2.142 9 04/10/06 asterionella 180 04/10/06 Spirogyra 69 04/10/06 Anabaena Circinalis 33 04/10/06 chlorella 26 04/10/06 chlorogonium 12 04/10/06 Chlamydomonas 9 04/10/06 Euglena 9 04/10/06 Ceratium 2 04/14/06 asterionella 400 0.83 4 04/14/06 Ceratium 8 04/14/06 Anabaena Circinalis 6 04/14/06 Anabaena Flos Aquae 1 04/19/06 asterionella 250 0.756 7 04/19/06 Anabaena Flos Aquae 89 04/19/06 Anabaena Circinalis 17 04/19/06 Spirogyra 16 04/19/06 cymbella ventecosa 3 04/19/06 fragilaria crotonesis 2 04/19/06 Ceratium 1 04/27/06 asterionella 16 0.082 5 04/27/06 Spirogyra 12 04/27/06 fragilaria crotonesis 7 04/27/06 Euglena 5 04/27/06 cyclotella bodanica 1 05/04/06 Spirogyra 29 0.184 9 05/04/06 carteria multifilis 27 05/04/06 fragilaria crotonesis 15 05/04/06 Anabaena Flos Aquae 9 05/04/06 pandorina 5 05/04/06 Anabaena Circinalis 2 05/04/06 chlorella 2 05/04/06 Euglena 2 05/04/06 stauroneis phoenicentepon 1 05/11/06 Spirogyra 29 0.166 8 05/11/06 Anabaena Flos Aquae 17 05/11/06 fragilaria crotonesis 12 05/11/06 Chlamydomonas 9 05/11/06 anacystis dimidiata 8 05/11/06 aphanizomenon flos aquae 3 05/11/06 coccochloris 3 05/11/06 asterionella gracillima 2 05/16/06 Spirogyra 16 0.132 8 05/16/06 Chlamydomonas 14 05/16/06 Anabaena Flos Aquae 13 05/16/06 Anabaena Planctonica 8 05/16/06 Euglena 7 05/16/06 chlorella 3 05/16/06 fragilaria crotonesis 3 05/16/06 asterionella 2 05/17/06 Anabaena Flos Aquae 7 0.112 19 05/17/06 Anabaena Circinalis 6 05/17/06 Anabaena Planctonica 6 05/17/06 Anabaena Planctonica 5 05/17/06 fragilaria crotonesis 5 05/17/06 fragilaria cupucina 4 05/17/06 fragilaria cupucina 4 05/17/06 fragilaria crotonesis 3 05/17/06 Anabaena Flos Aquae 2 05/17/06 Anabaena Planctonica 2 05/17/06 Anabaenopsis 2 05/17/06 asterionella 2 05/17/06 Euglena 2 05/17/06 Anabaena Circinalis 1 05/17/06 Anabaena Flos Aquae 1 05/17/06 Anabaenopsis 1 05/17/06 anacystis 1 05/17/06 naricula graciloides 1 05/17/06 peridinum 1 05/22/06 Anabaena Circinalis 9 0.03 3 05/22/06 Anabaena Flos Aquae 4 05/22/06 Anabaenopsis 2 05/23/06 Staurastrum 2 0.004 5 05/23/06 Anabaena Circinalis 0 05/23/06 Anabaena Flos Aquae 0 05/23/06 Anabaenopsis 0 05/23/06 fragilaria 0 05/24/06 Anabaena Circinalis 42 0.128 3 05/24/06 Anabaena Flos Aquae 19 05/24/06 Anabaenopsis 3 05/25/06 Anabaena Circinalis 1 0.002 3 05/25/06 Anabaena Flos Aquae 0 05/25/06 Anabaenopsis 0 05/26/06 Staurastrum 4 0.02 5 05/26/06 Anabaena Flos Aquae 2 05/26/06 chlorococcum 2 05/26/06 Anabaena Planctonica 1 05/26/06 tetraspora 1 05/31/06 rotifer 7 0.044 7 05/31/06 chlorococcum 6 05/31/06 uroglenopsis 3 05/31/06 Anabaena Flos Aquae 2 05/31/06 pseudanabaena limnetica 2 05/31/06 Anabaenopsis 1 05/31/06 Ceratium 1 06/01/06 Anabaenopsis 5 0.052 9 06/01/06 Anabaena Flos Aquae 4 06/01/06 chlorococcum 4 06/01/06 rotifer 3 06/01/06 Anabaena Sporoides 2 06/01/06 Ceratium 2 06/01/06 fragilaria 2 06/01/06 Staurastrum 2 06/01/06 uroglenopsis 2 06/02/06 Anabaena Sporoides 4 0.008 1 06/05/06 Anabaena Sporoides 1 0.002 1 06/15/06 Spirogyra 4 0.016 11 06/15/06 Ceratium 2 06/15/06 Chlamydomonas 1 06/15/06 Euglena 1 06/15/06 Anabaena Flos Aquae 0 06/15/06 Anabaena Sporoides 0 06/15/06 Anabaenopsis 0 06/15/06 chlorella 0 06/15/06 dinobryon 0 06/15/06 fragilaria 0 06/15/06 trachelomonas 0 06/22/06 Anabaenopsis 238 0.644 4 06/22/06 Spirogyra 65 06/22/06 Anabaena Circinalis 17 06/22/06 Anabaena Planctonica 2 06/23/06 Anabaenopsis 355 0.788 4 06/23/06 Anabaena Circinalis 35 06/23/06 Ceratium 3 06/23/06 Anabaena Flos Aquae 1 06/26/06 Anabaenopsis 75 0.182 2 06/26/06 Anabaena Circinalis 16 06/27/06 dinobryon 92 0.4 4 06/27/06 Anabaena Circinalis 72 06/27/06 Spirogyra 29 06/27/06 Anabaenopsis 7 06/28/06 dinobryon 126 0.396 4 06/28/06 Anabaenopsis 35 06/28/06 Spirogyra 33 06/28/06 Anabaena Circinalis 4 06/29/06 pseudanabaena limnetica 513 1.122 6 06/29/06 dinobryon 23 06/29/06 rotifer 11 06/29/06 Anabaenopsis 8 06/29/06 Ceratium 5 06/29/06 Scenedesmus 1 06/30/06 pseudanabaena limnetica 241 0.482 1 07/03/06 pseudanabaena limnetica 313 0.626 1 07/05/06 Anabaena Planctonica 36 0.072 1 07/06/06 Anabaena Planctonica 29 0.058 1 07/07/06 Anabaena Planctonica 29 0.058 1 07/11/06 Anabaena Planctonica 52 0.122 3 07/11/06 rotifer 7 07/11/06 Anabaenopsis 2 07/13/06 Anabaenopsis 36 0.094 5 07/13/06 Anabaena Planctonica 6 07/13/06 Anabaena Circinalis 3 07/13/06 Anabaena Sporoides 1 07/13/06 rotifer 1 07/20/06 Anabaenopsis 21 0.084 5 07/20/06 rotifer 9 07/20/06 Nodularia 8 07/20/06 Anabaena Planctonica 3 07/20/06 uroglenopsis 1 07/27/06 rotifer 13 0.04 5 07/27/06 Anabaenopsis 3 07/27/06 Gomphosphaeria 2 07/27/06 Anabaena Planctonica 1 07/27/06 Ceratium 1 08/08/06 Anabaenopsis 32 0.076 4 08/08/06 rotifer 4 08/08/06 chlorococcum 1 08/08/06 Scenedesmus 1 08/18/06 Anabaenopsis 47 0.124 5 08/18/06 rotifer 8 08/18/06 Anabaena Circinalis 5 08/18/06 chlorococcum 1 08/18/06 fragilaria 1 08/23/06 pseudanabaena limnetica 5800 11.668 3 08/23/06 Anabaenopsis 33 08/23/06 Anabaena Circinalis 1 08/24/06 pseudanabaena limnetica 3540 7.128 2 08/24/06 Anabaenopsis 24 08/25/06 pseudanabaena limnetica 1948 3.952 3 08/25/06 Anabaenopsis 27 08/25/06 nitzschia 1 08/30/06 pseudanabaena limnetica 1453 2.982 5 08/30/06 Anabaenopsis 30 08/30/06 Anabaena Circinalis 3 08/30/06 rotifer 3 08/30/06 Gomphosphaeria 2 09/01/06 pseudanabaena limnetica 1336 2.748 3 09/01/06 Anabaenopsis 37 09/01/06 Anabaena Circinalis 1 09/05/06 pseudanabaena limnetica 1152 2.4 4 09/05/06 Anabaenopsis 45 09/05/06 Anabaena Planctonica 2 09/05/06 Anabaena Circinalis 1 09/06/06 pseudanabaena limnetica 1712 3.574 2 09/06/06 Anabaenopsis 75 09/07/06 pseudanabaena limnetica 7272 14.992 4 09/07/06 Anabaenopsis 216 09/07/06 Anabaena Circinalis 6 09/07/06 Anabaena Sporoides 2 09/08/06 pseudanabaena limnetica 5714 11.748 4 09/08/06 Anabaenopsis 157 09/08/06 Anabaena Circinalis 2 09/08/06 Anabaena Sporoides 1 09/12/06 pseudanabaena limnetica 4300 8.854 3 09/12/06 Anabaenopsis 125 09/12/06 Anabaena Circinalis 2 09/13/06 pseudanabaena limnetica 5644 11.694 3 09/13/06 Anabaenopsis 182 09/13/06 Anabaena Circinalis 21 09/14/06 pseudanabaena limnetica 2524 5.21 4 09/14/06 Anabaenopsis 76 09/14/06 Anabaena Flos Aquae 3 09/14/06 Anabaena Circinalis 2 09/19/06 pseudanabaena limnetica 4448 9.164 4 09/19/06 Anabaenopsis 131 09/19/06 Anabaena Flos Aquae 2 09/19/06 Anabaena Circinalis 1 09/20/06 pseudanabaena limnetica 4672 9.438 3 09/20/06 Anabaenopsis 45 09/20/06 Anabaena Circinalis 2 09/28/06 pseudanabaena limnetica 6444 13.146 5 09/28/06 Anabaenopsis 122 09/28/06 Anabaena Circinalis 5 09/28/06 Anabaena Flos Aquae 1 09/28/06 Anabaena Sporoides 1 10/03/06 pseudanabaena limnetica 1358 2.988 5 10/03/06 Anabaenopsis 123 10/03/06 Anabaena Circinalis 7 10/03/06 Anabaena Flos Aquae 5 10/03/06 Anabaena Planctonica 1 10/09/06 pseudanabaena limnetica 418 0.998 4 10/09/06 Anabaena Circinalis 55 10/09/06 Anabaenopsis 16 10/09/06 Anabaena Flos Aquae 10 10/10/06 pseudanabaena limnetica 327 0.804 4 10/10/06 Anabaena Circinalis 51 10/10/06 Anabaenopsis 18 10/10/06 Anabaena Flos Aquae 6 10/16/06 pseudanabaena limnetica 66 0.194 4 10/16/06 Anabaena Circinalis 15 10/16/06 Anabaenopsis 12 10/16/06 Anabaena Flos Aquae 4 10/19/06 pseudanabaena limnetica 89 0.334 6 10/19/06 Anacystis 42 10/19/06 rotifer 25 10/19/06 Anabaenopsis 6 10/19/06 Anabaena Circinalis 4 10/19/06 Anabaena Flos Aquae 1 10/27/06 Anacystis 32 0.064 1 11/07/06 Chlamydomonas 10000 20 1 11/15/06 Anacystis 34 0.128 4 11/15/06 Gomphosphaeria 24 11/15/06 uroglenopsis 4 11/15/06 Scenedesmus 2 11/21/06 Chlamydomonas 405 0.888 5 11/21/06 Gomphosphaeria 22 11/21/06 Scenedesmus 11 11/21/06 Anacystis 3 11/21/06 chlorococcum 3 11/28/06 Chlamydomonas 172 0.406 5 11/28/06 Anacystis 17 11/28/06 chlorococcum 7 11/28/06 Scenedesmus 6 11/28/06 Gomphosphaeria 1 12/07/06 Chlamydomonas 87 0.268 6 12/07/06 Anacystis 16 12/07/06 Gomphosphaeria 12 12/07/06 Scenedesmus 12 12/07/06 chlorella 5 12/07/06 chlorococcum 2 12/14/06 Chlamydomonas 77 0.262 4 12/14/06 Gomphosphaeria 41 12/14/06 Scenedesmus 11 12/14/06 chlorococcum 2 12/28/06 Chlamydomonas 7500 15.072 6 12/28/06 Anacystis 19 12/28/06 chlorococcum 12 12/28/06 Scenedesmus 3 12/28/06 fragilaria 1 12/28/06 Gomphosphaeria 1

* Those marked abundant assumed >7500 ** Those marked very abundant assumed >10,000 Sample Depth MIB Geosmin Date Location (Ft) (ng/L) (ng/L) Units Plankton Species Odor Comments 05/17/05 CWE NA 1 160 ng/L Anabaena circinalis Earthy 05/17/05 Sed. Effluent NA ND 65 ng/L Anabaena circinalis Earthy 05/17/05 SWL 3 1 160 ng/L Anabaena circinalis Earthy 05/17/05 SWL 8 1 230 ng/L Anabaena circinalis Earthy 05/17/05 SWL 18 ND 180 ng/L Anabaena circinalis Earthy 05/17/05 SWL 28 ND 7 ng/L Anabaena circinalis Earthy 05/17/05 Sed. Discharge NA ND 2 ng/L Anabaena circinalis Earthy 05/19/05 CWE NA 3 83 ng/L Anabaena circinalis Earthy 05/19/05 CFE NA 3 300 ng/L Anabaena circinalis Earthy 05/19/05 SWL 3 ND 433 ng/L Anabaena circinalis Earthy 05/19/05 SWL 8 6.0 378 ng/L Anabaena circinalis Earthy 06/01/05 SWL 3 2.0 10 ng/L Anabaena circinalis Earthy 10/11/05 SWL 3 51.0 3 ng/L Pseudanabaena limnetica Pondy 10/11/05 CWE NA 33.0 2 ng/L Pseudanabaena limnetica Pondy 11/02/05 SWL 4 ND<3 ND<3 ng/L Fishy 11/02/05 SWL 4 ND<3 ND<3 ng/L Fishy 11/09/05 SWL 7 ND<3 ND<3 ng/L Fishy 11/17/05 SWL 7 ND<3 ND<3 ng/L sweet & fishy 11/22/05 SWL 7 ND<3 ND<3 ng/L sweet & fishy 11/30/05 SWL 6.5 ND<3 ND<3 ng/L sweet & fishy 12/06/05 SWL 5 ND<3 ND<3 ng/L sweet & fishy 12/15/05 SWL 4.5 ND<3 ND<3 ng/L sweet & fishy 12/21/05 SWL 4 7.1 ND<3 ng/L Chlamydomonas sweet & fishy Bloom 12/29/05 SWL 4 ND<3 ND<3 ng/L Chlamydomonas sweet & fishy Bloom 01/09/06 SWL 4 3.5 ND<3 ng/L Chlamydomonas sweet & fishy Bloom 01/12/06 SWL 8 5.6 ND<3 ng/L Chlamydomonas sweet & fishy Bloom dying off, LL released 01/19/06 SWL 14.8 ND<3 ND<3 ng/L sweet & fishy Bloom dying off, LL released 01/26/06 SWL 19 12.8 ND<3 ng/L sweet & fishy LL released 02/02/06 SWL 7 ND<3 ND<3 ng/L sweet & fishy 02/09/06 SWL 7 ND<3 ND<3 ng/L sweet & fishy 02/15/06 SWL 7 3.3 ND<3 ng/L 02/22/06 SWL 7 ND<3 ND<3 ng/L sweet & fishy 03/01/06 SWL 7 ND<3 ND<3 ng/L 03/09/06 SWL 7 ND<3 ND<3 ng/L 03/16/06 SWL 7 ND<3 ND<3 ng/L sweet & fishy 03/23/06 SWL 7 2 ND<3 ng/L sweet & fishy 03/29/06 SWL 7 ND<3 ND<3 ng/L sweet & fishy 04/07/06 SWL 7 ND<3 ND<3 ng/L sweet & fishy 04/11/06 SWL 7 ND<3 5 ng/L earthy musty Anabaena flos-aquae, circinalis bloom 04/20/06 SWL 7 40 33 ng/L earthy musty Anabaena flos-aquae (89), Asterionella (250) 04/28/06 SWL 7 ND<3 22 ng/L earthy musty 05/03/06 SWL 7.5 42 18 ng/L earthy musty 05/10/06 SWL 7.5 4 8 ng/L earthy musty Anabaena flos-aquae, Spyrogyra 05/17/06 SWL 7.5 8 ND<3 ng/L earthy musty Anabaena flos-aquae 05/24/06 SWL 6.6 ND<3 24 ng/L earthy musty Anabaena circinalis 05/24/06 CR NA 4 31 ng/L earthy musty conditioned raw 05/24/06 FW NA ND<3 20 ng/L earthy musty flocculated water 05/24/06 SW NA ND<3 24 ng/L earthy musty settled water 05/24/06 FE NA ND<3 11 ng/L earthy musty filter effluent 05/24/06 CWE NA 5 14 ng/L earthy musty clearwell effluent 05/31/06 SWL 8 ND<3 24 ng/L earthy musty Anabaena sporides 06/07/06 SWL 5 ND<3 ND<3 ng/L sweet & fishy 06/15/06 SWL 5 ND<3 ND<3 ng/L sweet & fishy 06/21/06 SWL 5 ND<3 ND<3 ng/L sweet & fishy 06/27/06 SWL 5 8 ND<3 ng/L grassy/musty Anabaena circinalis (18) 06/29/06 SWL 5 4 3 ng/L slight,grassy/musty Pseudanabaena limnetica (97) 07/05/06 SWL 5 4 3 ng/L slight,grassy/musty Anabaena planctonica (36) 07/12/06 SWL 5 5 ND<3 ng/L slight,grassy/musty Anabaena planctonica (52) 07/19/06 SWL 13 7 4 ng/L slight,grassy/musty Anabaenopsis (21) 07/27/06 SWL 12 5 ND<3 ng/L slight,grassy/musty 08/02/06 SWL 11 6 ND<3 ng/L slight,grassy/musty 08/09/06 SWL 11 4 4 ng/L slight,grassy/musty 08/17/06 SWL 11 8 3 ng/L slight,grassy/musty 08/24/06 SWL 9 4 ND<3 ng/L slight,grassy/musty Pseudanabaena limnetica 08/30/06 SWL 8 5 5 ng/L slight,grassy/musty Pseudanabaena limnetica 09/06/06 SWL 7 14 ND<3 ng/L slight,grassy/musty Pseudanabaena limnetica 09/14/06 SWL 6 12 ND<3 ng/L slight,grassy/musty Pseudanabaena limnetica 09/20/06 SWL 6 10 3 ng/L slight,grassy/musty Pseudanabaena limnetica 09/28/06 SWL 5 ND<3 ND<3 ng/L slight,grassy/musty Pseudanabaena limnetica 10/05/06 SWL 4.5 ND<3 ND<3 ng/L slight,grassy/musty Pseudanabaena limnetica 10/12/06 SWL 8 ND<3 ND<3 ng/L slight,grassy/musty Pseudanabaena limnetica, Anabaena Circinalis 10/20/06 SWL 8 ND<3 ND<3 ng/L slight,grassy/musty Pseudanabaena limnetica, Anabaena Circinalis 10/27/06 SWL 7 ND<3 ND<3 ng/L slight,grassy/musty Pseudanabaena limnetica, Anabaena Circinalis 11/02/06 SWL 6 ND<3 ND<3 ng/L slight,fishy/pondy 11/09/06 SWL 6 ND<3 ND<3 ng/L slight,fishy/pondy 11/14/06 SWL 6 ND<3 ND<3 ng/L slight,fishy/pondy 11/30/06 SWL 6 ND<3 ND<3 ng/L slight,fishy/pondy Chlamydomonas 12/07/06 SWL 6 ND<3 ND<3 ng/L slight,fishy/pondy Chlamydomonas 12/14/06 SWL 6 ND<3 ND<3 ng/L slight,fishy/pondy Chlamydomonas 12/21/06 SWL 6 ND<3 ND<3 ng/L slight,fishy/pondy 12/28/06 SWL 6 ND<3 4 ng/L slight,grassy/musty Abundant Chlamydomonas, Anacystis (19) 01/04/07 SWL 6 ND<3 4 ng/L slight,grassy/musty Chlamydomonas 01/10/07 SWL 6.5 ND<3 3 ng/L slight,grassy/musty Abundant Chlamydomonas, Anacystis 01/22/07 SWL 6 4.1 ND<3 ng/L slight,grassy/musty Abundant Chlamydomonas, Anacystis, Trachelomonas 02/01/07 SWL 6 ND<3 ND<3 ng/L slight,grassy/musty Abundant Nitzschia palea 02/08/07 SWL 6 3.2 ND<3 ng/L slight,grassy/musty Abundant Nitzschia palea SWA - URDS Optimization Data

Electrical Total Dissolved Ortho Sample Turbidity Ammonia Bromide TOC DOC Conductivity Chloride Nitrate Phosphorus Phosphorus Phosphorus Chlorophyll a Sulfate Total E. coli Date Location (NTU) (mg/l) (mg/l) (mg/l) (mg/l) UV400 UV254 SUVA UV280 (us/cm) (mg/l) (mg/l) TKN (mg/l) (as P) (mg/l) (as P) (mg/l) (as P) (mg/l) (ug/l) (mg/l) Coliform (MPN) 03/17/99 Loveland Inflow 0.5 0.02 0.30 2.45 2.44 0.081 3.317 0.060 684 0.46 0.45 ND<.020 ND<.020 299 1 04/21/99 Loveland Inflow 1.2 0.03 0.21 2.76 2.81 0.089 3.168 0.065 498 0.11 ND<0.20 ND<.020 ND<.020 1733 105 05/20/99 Loveland Inflow 0.5 0.02 0.25 2.69 2.76 0.067 2.424 0.047 552 ND<0.10 2.94 ND<.020 ND<.020 2419 11 06/08/99 Loveland Inflow 0.6 0.02 0.19 2.61 3.06 0.081 2.647 0.058 535 ND<0.10 ND<0.20 ND<.020 ND<.020 2419 14 07/21/99 Loveland Inflow 0.6 0.02 0.37 2.51 2.53 0.075 2.966 0.055 720 98 ND<0.10 ND<0.20 ND<.020 17328 10 10/28/99 Loveland Inflow 2.0 0.03 0.22 4.54 4.71 0.014 0.109 2.315 0.075 585 86 0.08 ND<0.20 0.040 0.030 ND<.020 54.3 24192 332 03/23/00 Loveland Inflow 0.9 0.03 0.30 3.57 4.45 0.012 0.099 2.226 0.071 732 94 ND<0.10 ND<0.20 ND<.020 ND<.020 ND<.020 81.2 39 3 04/26/00 Loveland Inflow 0.4 0.05 0.30 3.10 3.00 0.011 0.113 3.772 0.078 744 97 ND<0.10 ND<0.20 ND<.020 ND<.020 ND<.020 78.4 2755 10 05/17/00 Loveland Inflow 0.8 0.03 0.33 2.92 4.42 0.009 0.098 2.219 0.071 788 83 ND<0.10 0.30 ND<.020 ND<.020 ND<.020 73.3 24192 <2 09/30/98 Loveland Lake Below Thermocline 0.5 0.02 0.14 5.62 5.31 0.224 4.217 0.40 0.44 ND<.020 ND<.020 10/28/98 Loveland Lake Below Thermocline 4.1 0.04 0.14 5.32 5.13 0.193 3.764 0.144 0.40 0.32 0.110 0.100 11/11/98 Loveland Lake Below Thermocline 4.8 0.06 0.14 5.35 5.41 0.199 3.682 0.148 0.26 0.42 0.100 0.090 12/02/98 Loveland Lake Below Thermocline 4.4 0.12 0.15 5.34 5.46 0.198 3.624 0.149 302 ND<0.10 1.24 0.110 0.100 12/16/98 Loveland Lake Below Thermocline 3.9 0.10 0.13 5.01 5.16 0.200 3.878 0.149 339 0.23 0.32 0.100 0.100 01/20/99 Loveland Lake Below Thermocline 1.8 0.03 0.17 4.74 4.97 0.139 2.798 0.099 330 0.15 ND<0.20 0.040 0.030 02/17/99 Loveland Lake Below Thermocline 2.8 0.04 0.18 5.15 6.13 0.151 2.462 0.109 358.6 0.14 ND<0.20 0.040 0.030 03/17/99 Loveland Lake Below Thermocline 1.0 0.02 0.17 4.36 4.81 0.149 3.100 0.107 377 0.24 0.38 0.030 0.020 04/21/99 Loveland Lake Below Thermocline 1.1 0.03 0.17 4.77 4.95 0.150 3.030 0.107 365 0.28 0.20 0.031 ND<.020 05/20/99 Loveland Lake Below Thermocline 0.7 0.03 0.19 4.76 4.68 0.127 2.714 0.089 372 0.34 2.11 0.035 0.037 06/08/99 Loveland Lake Below Thermocline 0.7 0.02 0.18 4.27 4.72 0.130 2.755 0.093 359 ND<0.10 0.27 0.032 0.027 07/21/99 Loveland Lake Below Thermocline 0.9 0.05 0.37 4.82 4.89 0.145 2.963 0.103 389 44 0.15 0.28 ND<.020 08/26/99 Loveland Lake Below Thermocline 0.7 0.02 0.18 4.79 5.12 0.147 2.870 0.105 472 59 ND<0.10 0.41 0.090 0.070 09/23/99 Loveland Lake Below Thermocline 0.7 0.17 0.18 4.89 6.13 0.110 1.794 0.072 417 44 ND<0.10 0.35 0.110 0.002 ND<.020 39.4 10/28/99 Loveland Lake Below Thermocline 0.8 0.29 0.18 5.24 5.41 0.016 0.152 2.810 0.108 406 49 ND<0.10 0.39 0.150 0.150 0.145 29.0 11/18/99 Loveland Lake Below Thermocline 0.6 0.02 0.18 4.72 4.77 0.014 0.148 3.105 0.104 471 55 ND<0.10 0.21 0.030 0.140 0.132 28.9 02/24/00 Loveland Lake Below Thermocline 4.2 0.06 0.20 4.60 0.012 0.137 #DIV/0! 0.097 461 49 0.11 0.36 0.045 0.028 0.027 36.7 03/23/00 Loveland Lake Below Thermocline 2.1 0.12 0.20 4.97 5.80 0.008 0.121 2.086 0.083 429 49 0.19 0.47 0.035 ND<.020 ND<.020 37.7 04/26/00 Loveland Lake Below Thermocline 1.6 0.03 0.18 4.39 4.47 0.008 0.126 2.821 0.081 377 47 0.28 0.20 ND<.020 ND<.020 ND<.020 33.6 05/17/00 Loveland Lake Below Thermocline 0.9 0.02 0.19 4.52 4.63 0.008 0.128 2.763 0.088 450 49 0.33 0.29 0.020 0.020 ND<.020 33.5 06/22/00 Loveland Lake Below Thermocline 2.0 0.02 0.19 4.36 4.41 0.011 0.122 2.766 0.088 470 49 ND<0.10 1.10 0.350 0.230 ND<.020 33.5 07/27/00 Loveland Lake Below Thermocline 2.2 0.03 0.19 4.29 4.24 0.007 0.119 2.807 0.079 483 52 0.01 0.54 0.300 0.200 0.021 30.6 08/24/00 Loveland Lake Below Thermocline 2.6 0.02 0.20 5.49 0.009 0.137 #DIV/0! 0.092 487 49.1 ND<0.10 0.47 0.097 0.081 0.015 29.9 09/28/00 Loveland Lake Below Thermocline 1.5 0.08 0.20 4.50 4.53 0.011 0.120 2.651 0.082 488 50 ND<0.10 0.86 0.150 0.110 0.085 30.3 10/26/00 Loveland Lake Below Thermocline 1.7 0.22 0.20 4.66 4.69 0.005 0.123 2.622 0.081 489 51 ND<0.10 0.48 0.200 0.110 0.105 29.2 09/30/98 Loveland Lake Center Surface 0.5 0.02 0.19 4.86 4.90 0.134 2.733 ND<0.10 0.45 ND<.020 ND<.020 2.4 110 <2 10/28/98 Loveland Lake Center Surface 1.2 0.03 0.16 4.73 4.80 0.141 2.937 0.100 ND<0.10 0.38 0.040 0.030 4.9 20 20 11/11/98 Loveland Lake Center Surface 0.6 0.03 0.17 4.78 4.85 0.138 2.847 0.098 ND<0.10 0.27 ND<.020 ND<.020 3.8 2 2 12/02/98 Loveland Lake Center Surface 0.8 0.03 0.17 5.23 5.62 0.148 2.635 0.105 352 ND<0.10 0.65 ND<.020 ND<.020 3.4 <2 <2 12/16/98 Loveland Lake Center Surface 1.8 0.02 0.15 5.00 4.66 0.160 3.437 0.119 376 ND<0.10 0.68 0.030 0.080 5.6 <2 <2 01/20/99 Loveland Lake Center Surface 1.4 0.03 0.16 4.87 5.14 0.139 2.703 0.100 314 0.17 0.22 0.040 0.040 11.0 192 <2 02/17/99 Loveland Lake Center Surface 2.5 0.04 0.17 4.90 5.13 0.149 2.903 0.107 377.3 0.14 ND<0.20 0.030 0.020 13.0 191 <2 03/17/99 Loveland Lake Center Surface 0.8 0.02 0.17 4.82 4.49 0.147 3.274 0.106 373 ND<0.10 0.45 0.020 ND<.020 5.1 201 <2 04/21/99 Loveland Lake Center Surface 1.9 0.03 0.18 4.98 4.97 0.151 3.041 0.108 339 ND<0.10 0.38 ND<.020 ND<.020 9.7 38 <2 05/20/99 Loveland Lake Center Surface 0.6 0.03 0.20 4.85 4.91 0.116 2.364 0.076 408 ND<0.10 2.62 ND<.020 ND<.020 2.3 649 <2 06/08/99 Loveland Lake Center Surface 2.0 0.02 0.24 4.82 4.87 0.126 2.585 0.087 406 ND<0.10 0.40 ND<.020 ND<.020 6.6 130 <2 07/21/99 Loveland Lake Center Surface 0.7 0.02 0.21 5.29 5.35 0.126 2.357 0.084 440 54 ND<0.10 0.31 0.050 2.5 358 <2 08/26/99 Loveland Lake Center Surface 0.5 0.11 0.21 5.53 5.53 0.124 2.244 0.084 436 51 ND<0.10 0.43 ND<.020 ND<.020 3.1 488 <2 09/23/99 Loveland Lake Center Surface 0.8 0.02 0.16 4.28 6.19 0.142 2.293 0.099 511 55 ND<0.10 0.26 ND<.020 0.134 0.110 4.4 30.6 397 <2 10/28/99 Loveland Lake Center Surface 0.6 0.03 0.20 5.57 5.72 0.007 0.114 1.994 0.077 458 64 0.07 ND<0.20 ND<.020 ND<.020 ND<.020 <3 38.9 2419 3 11/18/99 Loveland Lake Center Surface 0.6 0.03 0.20 4.75 4.98 0.006 0.116 2.329 0.078 433 51 ND<0.10 0.23 ND<.020 ND<.020 ND<.020 2.6 38.5 26 <2 12/16/99 Loveland Lake Center Surface 0.8 0.10 0.20 4.84 5.06 0.009 0.135 2.669 0.091 430 48 0.08 0.31 0.050 0.040 0.048 3.1 35.4 20 1 01/27/00 Loveland Lake Center Surface 1.5 0.08 0.19 4.95 0.005 0.119 #DIV/0! 0.081 420 49 0.18 0.36 0.051 0.072 0.045 9.6 34.8 1 <2 02/24/00 Loveland Lake Center Surface 6.6 0.08 0.21 4.92 0.013 0.144 #DIV/0! 0.099 457 49 0.09 0.44 0.035 0.024 0.021 1.7 37.3 41 1 03/23/00 Loveland Lake Center Surface 4.7 0.03 0.21 5.06 5.22 0.009 0.125 2.395 0.084 419 51 ND<0.10 0.58 ND<.020 0.023 ND<.020 3.5 38.4 921 <2 04/26/00 Loveland Lake Center Surface 2.1 0.04 0.20 4.73 5.13 0.008 0.134 2.614 0.088 473 51 ND<0.10 ND<0.20 ND<.020 ND<.020 ND<.020 6.5 37.4 2419 <2 05/17/00 Loveland Lake Center Surface 1.4 0.03 0.20 5.10 5.37 0.009 0.133 2.476 0.092 472 73 ND<0.10 0.59 0.020 ND<.020 ND<.020 81.0 38.2 91 <2 06/22/00 Loveland Lake Center Surface 1.5 0.03 0.20 5.09 4.99 0.005 0.111 2.223 0.077 505 55 ND<0.10 0.25 ND<.020 ND<.020 ND<.020 5.6 40.0 548 <2 07/27/00 Loveland Lake Center Surface 1.0 0.03 0.21 4.79 4.52 0.004 0.114 2.522 0.073 501 32 ND<0.10 ND<0.20 0.023 0.030 ND<.020 4.5 39.1 263 <2 08/24/00 Loveland Lake Center Surface 1.0 0.03 0.25 5.49 0.009 0.121 #DIV/0! 0.080 507 59 ND<0.10 0.41 0.046 0.040 ND<.020 2.2 41.0 1733 1 09/28/00 Loveland Lake Center Surface 2.0 0.03 0.23 4.87 4.87 0.006 0.106 2.176 0.069 513 62 ND<0.10 0.81 ND<.020 ND<.020 ND<.020 3.1 40.4 2419 <2 10/26/00 Loveland Lake Center Surface 1.4 0.03 0.23 5.06 5.03 0.004 0.109 2.166 0.069 514 58 ND<0.10 0.30 ND<.020 ND<.020 0.008 ND<1.9 39.0 2419 1 04/20/99 Low Flow Barrier #DIV/0! 06/03/99 Low Flow Barrier #DIV/0! 06/10/99 Low Flow Barrier #DIV/0! 06/24/99 Low Flow Barrier #DIV/0! 07/01/99 Low Flow Barrier #DIV/0! 07/08/99 Low Flow Barrier #DIV/0! 07/15/99 Low Flow Barrier #DIV/0! 07/23/99 Low Flow Barrier #DIV/0! 07/29/99 Low Flow Barrier #DIV/0! 08/07/99 Low Flow Barrier #DIV/0! 08/14/99 Low Flow Barrier #DIV/0! 08/21/99 Low Flow Barrier #DIV/0! 08/28/99 Low Flow Barrier #DIV/0! 09/14/99 Low Flow Barrier #DIV/0! 11/15/99 Low Flow Barrier #DIV/0! 02/16/00 Low Flow Barrier #DIV/0! 02/17/00 Low Flow Barrier #DIV/0! 1260 SWA - URDS Optimization Data

Electrical Total Dissolved Ortho Sample Turbidity Ammonia Bromide TOC DOC Conductivity Chloride Nitrate Phosphorus Phosphorus Phosphorus Chlorophyll a Sulfate Total E. coli Date Location (NTU) (mg/l) (mg/l) (mg/l) (mg/l) UV400 UV254 SUVA UV280 (us/cm) (mg/l) (mg/l) TKN (mg/l) (as P) (mg/l) (as P) (mg/l) (as P) (mg/l) (ug/l) (mg/l) Coliform (MPN) 08/29/06 Low Flow Barrier 1.06 5.52 2029 411 ND<0.10 0.130 ND<.020 289.6 09/26/06 Low Flow Barrier 1.10 5.50 2535 448 ND<0.10 0.110 ND<.020 302.0 10/24/06 Low Flow Barrier 1.02 6.99 2709 457 ND<0.10 0.120 ND<.020 376.6 11/28/06 Low Flow Barrier 1.03 6.63 2709 457 ND<0.10 0.060 ND<.020 396.7 12/19/06 Low Flow Barrier 0.76 7.48 2160 400 0.14 0.020 ND<.020 369.9 01/23/07 Low Flow Barrier 0.90 4.93 2683 433 ND<0.10 0.040 ND<.020 426.6 0.0109 585 69 0 0 0 0.09 4200 652 2.4 0.66 0.2 0.0301 2550.681416 437.5454545 0.18191 0.108658939 0.011653846 1276.5 10/01/98 Sweetwater Inflow 11.5 0.02 0.76 6.37 6.57 0.247 3.760 ND<0.10 0.39 ND<.020 ND<.020 20 20 10/27/98 Sweetwater Inflow 10.9 0.03 0.85 5.92 6.04 0.159 2.631 0.110 ND<0.10 0.72 0.080 0.040 80 <2 11/10/98 Sweetwater Inflow 11.2 0.03 0.90 5.44 5.48 0.160 2.920 0.112 ND<0.10 1.02 0.070 0.020 4800 160 12/01/98 Sweetwater Inflow 11.7 0.03 0.76 7.10 9.09 0.230 2.531 0.164 1882 0.16 1.15 0.070 0.030 8000 200 12/15/98 Sweetwater Inflow 15.9 0.04 0.59 4.99 5.16 0.178 3.448 0.128 1528 0.47 1.12 0.050 0.030 200 200 01/19/99 Sweetwater Inflow 10.4 0.01 0.18 5.09 5.21 0.145 2.785 0.103 418 ND<0.10 0.25 0.050 0.030 2419 16 03/16/99 Sweetwater Inflow 7.9 0.02 0.69 5.05 6.00 0.127 2.118 0.088 1661 ND<0.10 0.58 ND<.020 ND<.020 520 <2 04/20/99 Sweetwater Inflow 2.5 0.01 0.64 4.82 4.83 0.154 3.189 0.110 1642 ND<0.10 0.32 ND<.020 ND<.020 1414 1 05/19/99 Sweetwater Inflow 4.6 0.02 0.84 5.20 5.20 0.129 2.482 0.080 1947 ND<0.10 3.06 0.037 ND<.020 2489 <2 06/07/99 Sweetwater Inflow 4.6 0.03 0.88 6.12 5.78 0.136 2.351 0.092 2004 ND<0.10 0.32 0.056 ND<.020 8664 <2 01/26/00 Sweetwater Inflow 4.7 0.02 1.08 6.00 5.60 0.008 0.133 2.375 0.092 2363 464 ND<0.10 0.44 0.030 ND<.020 ND<.020 358.0 10 <2 02/23/00 Sweetwater Inflow 79.7 0.02 0.19 7.24 7.68 0.061 0.385 5.010 0.303 627 95 0.87 0.73 0.370 0.230 0.262 102.0 24192 4611 03/22/00 Sweetwater Inflow 4.4 0.03 0.70 4.63 5.40 0.010 0.132 2.443 0.093 1737 290 ND<0.10 0.39 0.025 ND<.020 263.0 738 <2 04/25/00 Sweetwater Inflow 4.9 0.02 0.71 6.21 6.18 0.019 0.226 3.660 0.153 1650 303 0.41 0.050 ND<.020 ND<.020 260.0 2419 42 05/16/00 Sweetwater Inflow 17.4 0.02 0.83 6.96 6.45 0.015 0.179 2.774 0.127 1778 329 ND<0.10 0.87 0.070 ND<.020 ND<.020 284.0 24192 <2 10/01/98 Sweetwater Lake Below Thermocline 15.4 1.18 0.35 6.77 6.43 0.302 4.696 ND<0.10 2.26 0.450 0.330 10/27/98 Sweetwater Lake Below Thermocline 5.4 1.08 0.34 6.29 6.56 0.198 3.016 0.140 ND<0.10 2.20 0.420 0.370 11/10/98 Sweetwater Lake Below Thermocline 2.2 0.31 0.35 5.86 5.43 0.157 2.893 0.109 ND<0.10 0.80 0.060 0.050 12/01/98 Sweetwater Lake Below Thermocline 3.7 0.17 0.36 6.59 7.23 0.156 2.159 0.108 739 ND<0.10 0.90 0.040 0.020 12/15/98 Sweetwater Lake Below Thermocline 3.3 0.08 0.35 5.76 7.45 0.159 2.135 0.110 804 0.28 1.67 ND<.020 ND<.020 01/19/99 Sweetwater Lake Below Thermocline 4.0 0.14 0.36 5.81 5.87 0.143 2.438 0.096 751 ND<0.10 0.63 0.030 ND<.020 02/16/99 Sweetwater Lake Below Thermocline 3.6 0.10 0.31 5.32 6.61 0.154 2.329 0.108 645 ND<0.10 0.92 0.030 0.020 03/16/99 Sweetwater Lake Below Thermocline 2.0 0.05 0.32 5.64 5.55 0.137 2.470 0.094 617 0.38 0.65 0.026 ND<.020 04/20/99 Sweetwater Lake Below Thermocline 1.6 0.02 0.33 5.83 5.68 0.152 2.677 0.106 662 0.11 0.49 ND<.020 ND<.020 05/19/99 Sweetwater Lake Below Thermocline 1.2 0.03 0.35 5.54 5.66 0.129 2.278 0.086 711 0.19 2.53 0.036 0.032 06/07/99 Sweetwater Lake Below Thermocline 3.0 0.13 0.34 5.59 5.72 0.149 2.604 0.109 718 ND<0.10 0.47 0.074 0.050 07/22/99 Sweetwater Lake Below Thermocline 3.6 0.34 0.36 6.02 5.94 0.167 2.811 0.122 815 112 ND<0.10 0.61 0.110 08/25/99 Sweetwater Lake Below Thermocline 5.3 0.47 0.38 6.55 6.38 0.198 3.103 0.141 755 113 ND<0.10 0.97 0.150 0.270 09/22/99 Sweetwater Lake Below Thermocline 6.8 0.99 0.36 6.07 5.98 0.158 2.643 0.105 855 118 ND<0.10 1.40 0.300 0.342 0.320 59.2 10/28/99 Sweetwater Lake Below Thermocline 6.1 0.03 0.39 6.67 6.76 0.009 0.135 1.996 0.089 863 128 ND<0.10 ND<0.20 0.050 ND<.020 ND<.020 81.2 02/23/00 Sweetwater Lake Below Thermocline 4.2 0.04 0.35 5.98 5.77 0.012 0.152 2.634 0.107 744 107 0.10 0.52 0.037 0.045 ND<.020 77.3 04/25/00 Sweetwater Lake Below Thermocline 5.4 0.04 0.38 5.96 6.03 0.011 0.162 2.687 0.106 805 118 ND<0.10 0.54 0.040 ND<.020 ND<.020 85.7 05/16/00 Sweetwater Lake Below Thermocline 3.2 0.17 0.36 6.24 7.40 0.031 0.166 2.242 0.120 807 115 0.01 0.73 0.230 0.170 0.037 86.8 06/21/00 Sweetwater Lake Below Thermocline 8.7 0.66 0.41 6.05 5.96 0.033 0.165 2.768 0.118 777 117 ND<0.10 0.23 0.020 ND<.020 0.101 75.2 07/26/00 Sweetwater Lake Below Thermocline 9.1 0.47 0.37 5.64 5.67 0.011 0.147 2.593 0.099 878 123 ND<0.10 0.34 0.070 0.070 0.057 73.0 08/23/00 Sweetwater Lake Below Thermocline 15.2 1.79 0.41 7.49 0.049 0.218 #DIV/0! 0.159 888 118 ND<0.10 2.40 0.740 0.830 0.786 46.2 09/27/00 Sweetwater Lake Below Thermocline 13.3 0.79 0.44 7.14 6.72 0.009 0.145 2.158 0.093 936 134 ND<0.10 2.20 0.350 0.270 0.233 76.9 10/25/00 Sweetwater Lake Below Thermocline 16.2 0.20 0.47 0.010 0.182 #DIV/0! 0.118 955 146 ND<0.10 5.60 1.400 0.040 0.011 91.2 07/26/01 Sweetwater Lake Below Thermocline 0.32 5.55 1066 137 0.058 08/29/01 Sweetwater Lake Below Thermocline 0.34 6.20 1035 127 0.360 09/26/01 Sweetwater Lake Below Thermocline 0.37 1062 139 10/01/98 Sweetwater Lake Center Surface 0.9 0.03 0.35 6.29 6.71 0.165 2.458 ND<0.10 0.66 ND<.020 ND<.020 6.2 40 <2 10/27/98 Sweetwater Lake Center Surface 1.1 0.07 0.34 6.04 6.95 0.156 2.246 0.108 ND<0.10 0.82 0.060 0.050 5.2 220 <2 11/10/98 Sweetwater Lake Center Surface 2.2 0.29 0.35 7.66 5.59 0.155 2.771 0.108 0.20 0.67 0.050 0.050 1.0 50 50 12/01/98 Sweetwater Lake Center Surface 4.1 0.16 0.36 6.71 7.07 0.152 2.151 0.107 744 ND<0.10 0.98 0.030 ND<.020 9.9 13 13 12/15/98 Sweetwater Lake Center Surface 3.1 0.08 0.35 5.65 7.18 0.157 2.187 0.109 788 0.10 1.15 ND<.020 ND<.020 16.0 4 <2 01/19/99 Sweetwater Lake Center Surface 4.6 0.10 0.34 5.95 6.06 0.138 2.278 0.096 744 ND<0.10 0.55 0.020 ND<.020 25 33 <2 02/16/99 Sweetwater Lake Center Surface 3.0 0.02 0.31 5.60 6.47 0.156 2.411 0.109 644 ND<0.10 0.63 0.030 0.020 22.0 157 6 03/16/99 Sweetwater Lake Center Surface 2.4 0.02 0.32 6.11 5.79 0.139 2.402 0.097 648 ND<0.10 0.49 0.040 ND<.020 13.0 146 20 04/20/99 Sweetwater Lake Center Surface 2.2 0.11 0.34 5.97 6.05 0.150 2.481 0.104 676 ND<0.10 0.30 ND<.020 ND<.020 3.1 19 2 05/19/99 Sweetwater Lake Center Surface 0.7 0.04 0.36 5.95 6.03 0.125 2.074 0.083 736 ND<0.10 1.70 ND<.020 ND<.020 1.1 816 6 06/07/99 Sweetwater Lake Center Surface 1.1 0.03 0.35 5.77 6.08 0.135 2.222 0.090 783 ND<0.10 0.58 ND<.020 ND<.020 0.2 74 10 07/22/99 Sweetwater Lake Center Surface 2.5 0.02 0.38 6.14 6.21 0.142 2.286 0.094 868 131 ND<0.10 0.38 ND<.020 1.5 1300 6 08/25/99 Sweetwater Lake Center Surface 1.8 0.04 0.40 6.51 6.67 0.139 2.083 0.092 866 133 ND<0.10 0.28 0.030 ND<.020 4.7 299 12 09/22/99 Sweetwater Lake Center Surface 3.5 0.01 0.39 5.85 6.45 0.134 2.078 0.089 1076 132 0.07 0.41 0.020 0.019 ND<.020 8.9 83.3 423 10 10/28/99 Sweetwater Lake Center Surface 2.8 0.03 0.40 6.73 7.09 0.011 0.134 1.890 0.087 881 135 0.08 ND<0.20 0.050 ND<.020 ND<.020 33.6 81.7 2419 25 11/17/99 Sweetwater Lake Center Surface 7.3 0.02 0.39 6.16 6.77 0.009 0.133 1.965 0.089 931 143 ND<0.10 0.20 0.030 ND<.020 ND<.020 54.7 82.8 147 10 12/15/99 Sweetwater Lake Center Surface 2.9 0.03 0.40 6.01 5.88 0.009 0.138 2.346 0.089 849 128 0.25 0.50 0.030 0.020 0.013 1.2 93.8 26 2 01/26/00 Sweetwater Lake Center Surface 12.4 0.26 0.43 6.74 6.60 0.007 0.139 2.107 0.091 900 171 0.12 0.83 0.048 0.033 ND<.020 3.5 90.7 1 <2 02/23/00 Sweetwater Lake Center Surface 4.8 0.03 0.35 6.15 6.23 0.013 0.158 2.537 0.111 736 107 0.11 0.80 0.045 0.020 ND<.020 14.0 77.3 9208 46 03/22/00 Sweetwater Lake Center Surface 2.6 0.04 0.35 6.39 6.55 0.012 0.142 2.169 0.099 752 117 ND<0.10 0.59 0.032 ND<.020 ND<.020 20.0 85.0 2419 17 04/25/00 Sweetwater Lake Center Surface 5.6 0.02 0.37 5.90 5.90 0.010 0.163 2.765 0.103 804 116 ND<0.10 0.32 0.050 ND<.020 ND<.020 16.0 86.6 27 4 05/16/00 Sweetwater Lake Center Surface 1.5 0.03 0.36 5.96 5.95 0.013 0.154 2.587 0.107 836 97 0.03 0.47 0.020 0.090 0.034 4.0 83.0 687 96 06/21/00 Sweetwater Lake Center Surface 3.0 0.02 0.40 6.05 5.99 0.008 0.142 2.373 0.096 795 132 0.02 0.52 ND<.020 ND<.020 ND<.020 7.4 90.5 2419 7 07/26/00 Sweetwater Lake Center Surface 3.4 0.06 0.41 6.02 5.90 0.008 0.133 2.255 0.089 867 136 ND<0.10 0.32 0.040 0.040 ND<.020 13.0 91.7 2419 56 08/23/00 Sweetwater Lake Center Surface 2.5 0.03 0.42 7.24 0.014 0.152 #DIV/0! 0.102 903 142.4 ND<0.10 0.58 0.059 0.074 ND<.020 13.0 92.3 1300 54 09/27/00 Sweetwater Lake Center Surface 5.4 0.07 0.43 6.68 6.53 0.009 0.139 2.129 0.090 931 149 ND<0.10 1.10 0.110 0.090 0.036 28.0 89.5 2419 9 10/25/00 Sweetwater Lake Center Surface 12.4 0.13 0.43 7.30 6.85 0.011 0.151 2.205 0.100 950 130 ND<0.10 1.20 0.060 0.020 ND<.020 39.0 91.6 387 56 SWA - URDS Optimization Data

Date Sampled Flow cfs Total Flow cf Nitrite as N Bromide Nitrate as N O-Phosphate as P Sulfate pH Conductivity TOC

1/5/1999 7.208 0 0 0.5823 0.4365 0.0112 196.7 8.12 1415 8.8 1/5/1999 11.48 31558 0 0.5924 0.4549 0.0127 200.9 8.11 1407 8.5 1/5/1999 12.27 62852 0 0.589 0.4458 0.0098 199.2 8.13 1397 7.8 1/5/1999 9.267 95590 0 0.5939 0.4445 0.0205 200.7 8.12 1400 8.7 1/5/1999 9.745 127678 0 0.5876 0.4393 0 199.2 8.12 1400 8.1 1/6/1999 10.81 162031 0 0.5916 0.441 0 200.3 8.1 1400 9.1 1/6/1999 8.459 194588 0 0.59 0.4357 0.0113 200.7 8.1 1404 7.3 1/6/1999 10.87 224764 0 0.5892 0.4257 0 200.3 8.09 1407 7.2 1/6/1999 8.403 258614 0 0.5942 0.4207 0.012 202.4 8.07 1406 6.9 1/6/1999 16.36 302553 0 0.5896 0.408 0 201.2 8.07 1409 8.6 1/6/1999 20.81 372387 0 0.5845 0.4352 0 201.4 8.04 1419 7.9 1/6/1999 27.29 459382 0 0.4865 0.4663 0 155.9 8.02 1192 7.6 1/6/1999 24.57 551231 0 0.3701 0.3538 0.015 100.1 7.94 889 9.1 1/6/1999 28.93 645088 0 0.3441 0.2918 0.0297 85.4352 7.86 794 8.5 1/6/1999 25.39 740283 0 0.3165 0.2671 0.0148 77.2 7.85 740 6.8 1/6/1999 26.44 835136 0 0.3082 0.2527 0.0147 73.1 7.86 710 6.7 1/6/1999 25.27 931140 0 0.3033 0.25 0.0234 71 7.91 693 6.3 1/6/1999 29.4 1030142 0 0.3006 0.2397 0.0156 69.3 7.91 682 6.1 1/6/1999 27.78 1129063 0 0.2976 0.238 0.017 68.1 7.92 676 6.1 1/6/1999 26.47 1228510 0 0.297 0.233 0.0253 67.5 7.91 674 7.9 1/6/1999 13.37 1297632 0 0.2937 0.2288 0.0147 66.9 7.95 672 7.4 0.29 0.23 0.00 66.90 672.00 6.10 0.59 0.47 0.03 201.40 1419.00 9.10 0.37 0.31 0.01 103.09 879.17 7.42 0.31 0.26 0.01 75.15 725.00 7.50 1/29/2000 0.173 56 0 0.994 0.104 0 356 7.9 2512 5.51 1/29/2000 22.59 52540 0 1.007 0.143 0 375 7.8 2618 5.95 1/29/2000 38.55 163241 0 0.813 0.545 0.019 444 7.7 2772 11.89 1/29/2000 54.54 324775 0 0.61 0.469 0.08 278 7.8 1876 12.14 1/29/2000 60.45 516685 0 0.564 0.379 0.092 206 7.8 1576 10.42 1/29/2000 73.42 764191 0 0.541 0.339 0.096 178 7.8 1462 9.6 1/29/2000 79.94 1030622 0 0.533 0.322 0.085 160 7.8 1386 9.44 1/29/2000 76.14 1315341 0 0.523 0.32 0.092 148 7.8 1334 9.02 0.52 0.10 0.00 148.00 1334.00 5.51 1.01 0.55 0.10 444.00 2772.00 12.14 0.70 0.33 0.06 268.13 1942.00 9.25 0.59 0.33 0.08 242.00 1726.00 9.52

2/14/2005 0.014 0.322 1.62 0.012 119 1031 12.36 2/16/2005 0.027 0.235 1.64 0.04 69.4 735 9.558 2/16/2005 0.02 0.236 1.65 0.034 68.8 733 9.468 2/16/2005 0.027 0.228 1.63 0.033 67.2 729 9.51 2/16/2005 0.022 0.241 1.65 0.031 67.3 726 9.75 2/16/2005 0.021 0.23 1.63 0.038 66.6 724 9.539 2/16/2005 0.019 0.228 1.62 0.04 66 720 9.83 2/16/2005 0.068 0.231 1.67 0.04 65.7 718 9.92 2/16/2005 0.02 0.227 1.59 0.037 64.1 713 9.95 2/16/2005 710 11.73 2/16/2005 0.019 0.224 1.53 0.045 61.8 712 11.68 2/16/2005 711 12.31 2/16/2005 0.014 0.234 1.56 0.034 62.9 709 11.08 2/16/2005 705 11.11 2/16/2005 0.016 0.234 1.56 0.047 61.7 701 9.102 2/16/2005 697 11.49 2/16/2005 693 11.43 2/16/2005 0.013 0.225 1.61 0.041 60.5 687 11.78 2/16/2005 682 11.79 2/16/2005 683 11.83 2/16/2005 0.011 0.222 1.56 0.043 59.1 669 11.76 2/16/2005 669 11.95 2/16/2005 665 11.96 2/16/2005 658 12.04 2/16/2005 0.022 0.243 1.56 0.145 57.3 659 12.33 0.22 1.53 0.01 57.30 658.00 9.10 0.32 1.67 0.15 119.00 1031.00 12.36 0.24 1.61 0.04 67.83 713.56 11.01 0.23 1.62 0.04 65.70 709.00 11.49 Date Sample Time EC UV254 TOC DOC PO4 mg/l NO3 mg/l SO4 mg/l BR- mg/l Al mg/l Sb mg/l As mg/l Ba mg/l Be mg/l B mg/l Cd mg/l Cr mg/l Co mg/l Cu mg/l 01/07/06 Low flow barrier 0700 7.71 6.65 0.55 1.8 458 0.98 0.082 ND ND 0.080 ND 0.345 ND ND ND 0.011 01/07/06 Low flow barrier 0800 6.52 6.55 1.08 1.8 450 0.96 0.080 ND ND 0.074 ND 0.258 ND ND ND ND 01/07/06 Low flow barrier 0900 6.97 6.94 1.18 3.1 470 ND 0.160 ND ND 0.072 ND 0.234 ND ND ND ND 01/09/06 Low flow barrier 1500 8.43 8.45 0.67 ND 55.8 ND 0.441 ND ND 0.039 ND 0.105 ND ND ND ND 01/18/06 Low flow barrier 1100 555 21.7 6.79 6.86 02/08/06 Low flow barrier 0930 1818 16.7 6.23 5.94 0.07 0.1 234 0.58 02/14/06 Low flow barrier 0930 2044 16.4 5.89 5.83 0.09 ND 283 0.70

16.4 5.9 5.8 0.07 0.0 56 0.00 21.7 8.4 8.4 1.18 3.1 470 0.98 18.3 6.9 6.7 0.61 1.1 325 0.54 16.7 6.8 6.6 0.61 1.0 367 0.64 Date Sample Time Fe mg/l Pb mg/l Mn mg/l Ni mg/l K mg/l Se mg/l Ag mg/l Na mg/l Sr mg/l Tl mg/l V mg/l Zn mg/l Hg mg/l 01/07/06 Low flow barrier 0700 0.317 0.020 0.220 ND 3.610 0.087 ND 263 0.746 ND 0.032 0.083 ND 01/07/06 Low flow barrier 0800 0.350 0.013 0.223 ND 3.270 0.079 ND 269 0.774 ND 0.036 0.030 ND 01/07/06 Low flow barrier 0900 0.559 0.013 0.246 ND 3.580 0.084 ND 268 0.765 ND 0.048 0.066 ND 01/09/06 Low flow barrier 1500 0.640 0.007 0.072 ND 4.530 0.036 ND 59.8 0.217 ND 0.022 0.040 ND 01/18/06 Low flow barrier 1100 02/08/06 Low flow barrier 0930 02/14/06 Low flow barrier 0930

0.32 0.07 0.64 0.25 0.47 0.19 0.45 0.22 Project Clean Water - Dry Weather Monitoring on Sweetwater River SITE 11 - Steele Canyon Road 5/17/05 8/3/05 5/1/06 Field Measurements AVERAGE Flow, cfs 16.7 0 0.52 Conductivity, µS/cm 505 2,030 1950 1,495 Turbidity, NTU 1 85 0 Dissolved Oxygen, mg/L 13.55 1.77 10.5 Temperature, ºC 23.4 23.2 22.7 NH3-N, mg/L 0.1 9 0.2 0.2 NO3-N, mg/L 0.68 0.56 0.56 0.62 PO4-P, mg/L 0.03 1.88 0 0.02 Analytical Results MEDIAN Total Coliform, MPN/100mL 5,000 NS 40 2,520 Fecal Coliform, MPN/100mL 20 NS ND 20 Enterococcus, MPN/100mL 130 NS 40 Oil and Grease ND NS ND MBAS ND NS 0.06 Cadmium, µg/L ND NS ND Copper, µg/L ND NS ND Lead, µg/L ND NS ND Zinc, µg/L ND NS ND Diazinon, µg/L NS NS ND Chlorpyrifos, µg/L NS NS ND Malathion, µg/L NS NS ND

SITE 12 - Old Bridge 6/11/03 7/16/03 9/17/03 5/5/04 7/12/04 5/17/05 8/3/05 5/1/06 9/28/06 Field Measurements AVERAGE Conductivity, µS/cm 2930 2570 2820 2810 2820 680 2550 2550 2670 2489 Turbidity, NTU 7 2 4 6 0 2 33 14 8 Dissolved Oxygen, mg/L 4.84 3.85 5.31 4.34 7.82 7.34 5.29 5.54 5.65 Temperature, ºC 17.2 19.1 19 17.7 19.7 18.6 19.4 18.3 18 NH3-N, mg/L 0.3 0.7 0.3 0.3 0.4 0.2 0.3 0.3 0.4 0.4 NO3-N, mg/L 0.79 0.56 0.9 1.81 0.34 0.68 1.02 0.9 1.69 0.97 PO4-P, mg/L 0.05 0.03 0.07 0.1 0.07 0.07 0.1 0.65 0.05 0.13 Analytical Results MEDIAN Total Coliform, MPN/100mL 11,000 30,000 17,000 NS 23,000 8,000 NS 5,000 NS 14,000 Fecal Coliform, MPN/100mL 7,000 13,000 8,000 NS 230 130 NS 20 NS 3,615 Enterococcus, MPN/100mL 800 ND 3,000 NS 220 700 NS 1400 NS Oil and Grease 195 1 NS NS 2 ND NS ND NS MBAS ND NS NS NS ND ND NS 0.06 NS Cadmium, µg/L ND NS NS NS ND ND NS ND NS Copper, µg/L ND NS NS NS 0.021 0.002 NS ND NS Lead, µg/L ND NS NS NS ND ND NS ND NS Zinc, µg/L ND NS NS NS ND ND NS 29.4 NS Diazinon, µg/L NS NS NS NS NS NS NS ND NS Chlorpyrifos, µg/L NS NS NS NS NS NS NS ND NS Malathion, µg/L NS NS NS NS NS NS NS ND NS Project Clean Water - Dry Weather Monitoring on Sweetwater River Site Comparison SW-11 SW-11 SW-11 SW-12 SW-12 SW-12 5/17/05 8/3/05 5/1/06 5/17/05 8/3/05 5/1/06 Field Measurements Flow, cfs 16.7 0 0.52 28.08 0.93 4.32 Conductivity, µS/cm 505 2,030 1950 680 2550 2550 Turbidity, NTU 1 85 0 2 33 14 Dissolved Oxygen, mg/L 13.55 1.77 10.5 7.34 5.29 5.54 Temperature, ºC 23.4 23.2 22.7 18.6 19.4 18.3 NH3-N, mg/L 0.1 9 0.2 0.2 0.3 0.3 NO3-N, mg/L 0.68 0.56 0.56 0.68 1.02 0.9 PO4-P, mg/L 0.03 1.88 0 0.07 0.1 0.65 Analytical Results Total Coliform, MPN/100mL 5,000 NS 40 8,000 NS 5,000 Fecal Coliform, MPN/100mL 20 NS ND 130 NS 20 Enterococcus, MPN/100mL 130 NS 40 700 NS 1400 Oil and Grease ND NS ND ND NS ND MBAS ND NS 0.06 ND NS 0.06 Cadmium, µg/L ND NS ND ND NS ND Copper, µg/L ND NS ND 0.002 NS ND Lead, µg/L ND NS ND ND NS ND Zinc, µg/L ND NS ND ND NS 29.4 Diazinon, µg/L NS NS ND NS NS ND Chlorpyrifos, µg/L NS NS ND NS NS ND Malathion, µg/L NS NS ND NS NS ND

APPENDIX C PERIODS OF USE FOR WATER SOURCES AT PERDUE WTP Acre-feet Acre-feet Acre-feet AQ SW Percent Clearwell NC Demin to SW LL Total Imported Month Date Raw RAW Treated AQ Imported Effluent Wells System Runoff Release Inflow Stored Jan Jan-96 1480.9 5.6 0% 1,486.5 176.7 561.5 6925 7486.5 0 Feb Feb-96 1249.7 2.2 0% 1,251.9 164.5 647.2 0 647.2 0 Mar Mar-96 1471.2 0.0 0% 1,471.2 174.5 720.2 0 720.2 0 Apr Apr-96 1799.7 1,250.5 41% 1,799.7 166.7 257.6 0 257.7 0 May May-96 2199.3 0.0 0% 2,199.3 171.9 190.0 0 190.0 0 Jun Jun-96 2094 156.0 7% 2,250.0 164.0 198.3 0 198.3 0 Jul Jul-96 2292.9 0.0 0% 2,292.9 169.4 173.3 0 173.3 0 Aug Aug-96 2355.6 0.1 0% 2,355.7 168.0 164.7 0 164.7 0 Sep Sep-96 2184.7 13.8 1% 2,198.5 161.5 198.0 0 198.0 0 Oct Oct-96 23.7 1,826.5 99% 1,850.2 165.0 76.5 0 76.5 0 Nov Nov-96 0 1,484.6 100% 1,484.6 161.1 123.5 0 123.5 0 Dec Dec-96 0 1,349.3 100% 1,349.3 164.3 186.8 0 186.8 0 Jan Jan-97 214.7 1,098.1 84% 1,312.8 163.4 1096.1 5337.9 6434.0 0 Feb Feb-97 808 484.9 38% 1,292.9 149.9 361.5 2801 3162.5 0 Mar Mar-97 0 1,710.3 100% 1,710.3 161.7 289.3 0 289.3 1479.5 Apr Apr-97 110 1,835.2 94% 1,835.2 159.4 253.6 0 253.6 1944.4 May May-97 953.4 2,163.3 69% 2,163.3 162.3 221.0 0 221.0 0 Jun Jun-97 2082.2 2,222.2 52% 2,222.2 153.3 186.4 0 186.4 0 Jul Jul-97 2442.4 2,442.4 50% 2,442.4 156.8 230.5 0 230.5 114.1 Aug Aug-97 2462.6 1,294.8 34% 2,462.6 155.5 196.9 0 196.9 0 Sep Sep-97 2198.7 0.0 0% 2,198.7 148.5 257.6 0 257.6 0 Oct Oct-97 2051 0.0 0% 2,051.0 153.9 212.5 0 212.5 0 Nov Nov-97 594.3 957.3 62% 1,551.6 146.9 267.2 0 267.2 0 Dec Dec-97 18.5 1,280.0 99% 1,298.5 89.0 122.2 0 122.2 0 Jan Jan-98 394.6 923.8 70% 1,318.4 106.0 473.9 0 473.9 0 Feb Feb-98 0 1,128.8 100% 1,128.8 105.5 5823.5 0 5823.5 0 Mar Mar-98 1028.2 425.1 29% 1,453.3 169.1 2807.9 1293 4100.9 0 Apr Apr-98 1454.3 0.0 0% 1,454.3 177.7 2987.4 11683 14670.4 0 May May-98 2048.7 0.0 0% 2,048.7 133.1 823.2 4696 5519.2 0 Jun Jun-98 2240.8 0.0 0% 2,240.8 83.7 366.3 1989 2355.3 0 Jul Jul-98 2433.5 0.0 0% 2,433.5 44.8 180.2 609 789.2 0 Aug Aug-98 2347.3 0.0 0% 2,347.3 121.9 223.8 5.6 229.4 0 Sep Sep-98 2132 0.0 0% 2,132.0 105.5 234.6 0 234.6 0 Oct Oct-98 2070.3 0.0 0% 2,070.3 142.5 301.9 0 301.9 0 Nov Nov-98 1618.1 0.0 0% 1,618.1 172.9 248.1 0 248.1 0 Dec Dec-98 1481.2 0.0 0% 1,481.2 178.7 532.9 0 532.9 0 Jan Jan-99 1510.1 0.0 0% 1,510.1 175.2 1557.7 9031.6 10589.3 0 Feb Feb-99 1304.9 0.0 0% 1,304.9 160.1 737.4 0 737.4 0 Mar Mar-99 1518 0.0 0% 1,518.0 174.3 434.9 0 434.9 13.9 Apr Apr-99 1513.3 0.0 0% 1,513.3 167.7 596.4 0 596.4 0 May May-99 1959.2 0.0 0% 1,955.7 166.6 223.1 0 223.1 0 Jun Jun-99 2010.1 0.0 0% 2,012.9 166.0 236.1 0 236.1 0 Jul Jul-99 0.0 2502.7 0.0 0% 2,271.8 170.4 113.7 0 113.7 0 Aug Aug-99 5.9 2545.4 0.0 0% 2,378.4 158.7 182.4 0 182.4 0 Sep Sep-99 1257.4 1010.3 0.0 55% 2,083.3 163.4 223.6 0 223.6 75 Oct Oct-99 2048.9 289.2 0.0 88% 2,145.6 168.7 171.5 0 171.5 123 Nov Nov-99 364.2 1563.4 0.0 19% 1,910.9 157.5 322.6 0 322.6 22 Dec Dec-99 1985.0 2.5 3.7 100% 1,964.4 166.0 246.7 0 246.7 123 Jan Jan-00 1409.6 0.0 0.0 100% 1,360.0 159.3 181.3 830 1011.3 50 Feb Feb-00 1166.0 0.0 0.0 100% 1,131.0 147.2 1485.4 5669 7154.4 35 Mar Mar-00 191.4 1117.5 0.0 15% 1,277.5 156.0 634.1 0 634.1 11 Apr Apr-00 1701.4 0.0 0.3 100% 1,608.0 150.8 276.9 316.2 0 316.2 120 May May-00 140.9 1734.5 86.5 12% 1,698.3 153.6 376.1 129.8 0 129.8 79 Jun Jun-00 0.0 2073.0 0.0 0% 1,939.9 147.8 359.1 162.1 0 162.1 0 Jul Jul-00 0.0 2192.7 0.0 0% 2,055.5 151.5 359.2 198.9 0 198.9 0 Aug Aug-00 0.0 2205.6 0.0 0% 2,086.7 146.6 365.7 266.5 0 266.5 0 Sep Sep-00 553.0 1759.1 44.6 26% 2,116.8 149.9 72.4 267.2 0 267.2 33 Oct Oct-00 1278.6 560.7 27.8 71% 1,756.1 151.2 230.8 222.8 0 222.8 77 Nov Nov-00 1213.5 233.5 7.3 84% 1,400.9 147.6 353.0 81.0 0 81.0 73 Dec Dec-00 1223.7 483.8 0.0 72% 1,645.7 153.2 157.2 190.8 0 190.8 73 Jan Jan-01 1287.1 0.0 0.0 100% 1,198.1 150.6 340.5 495.8 0 495.8 1241 Feb Feb-01 1088.8 0.0 0.0 100% 1,019.2 136.2 274.3 396.0 0 396.0 3950 Mar Mar-01 909.5 323.6 0.0 74% 1,420.4 149.9 272.4 860.9 0 860.9 3749 Apr Apr-01 1595.0 0.0 0.0 100% 1,514.1 143.5 216.7 62.8 0 62.8 1393 May May-01 25.7 1838.1 0.0 1% 1,780.6 147.4 230.9 226.4 0 226.4 2 Jun Jun-01 0.0 2006.2 0.0 0% 1,874.4 143.6 242.5 315.6 0 315.6 0 Jul Jul-01 0.0 2249.6 0.0 0% 2,049.0 142.2 275.9 240.2 0 240.2 0 AQ SW Percent Clearwell NC Demin to SW LL Total Imported Month Date Raw RAW Treated AQ Imported Effluent Wells System Runoff Release Inflow Stored Aug Aug-01 160.2 2079.4 0 7% 2,061.2 145.1 277.0 158.7 0 158.7 8 Sep Sep-01 512.4 1602.6 0 24% 1,876.5 138.8 257.5 129.0 0 129.0 18 Oct Oct-01 603.3 1564.5 0 28% 1,902.1 26 269.5 141.8 0 141.8 23 Nov Nov-01 1037.5 605.2 0 63% 1,509.5 3.9 272.2 170.9 0 170.9 45 Dec Dec-01 962.0 308.7 141 87% 1,259.7 93.6 257.7 143.7 0 143.7 76 Jan Jan-02 1388.0 0.0 0 100% 1,318.3 143.9 276.2 65.7 0 65.7 68 Feb Feb-02 1436.4 0.0 0 100% 1,344.0 135.4 247.9 36.9 0 36.9 1560 Mar Mar-02 901.1 734.9 0 55% 1,519.5 146.4 284.5 143.5 0 143.5 1904 Apr Apr-02 1672.9 27.2 1.9 99% 1,613.0 143.8 252.5 164.2 0 164.2 2250 May May-02 1359.0 647.8 7 68% 1,899.2 146.2 295.0 191.6 0 191.6 112 Jun Jun-02 295.7 1861.0 0 14% 1,996.3 139.4 277.1 73.2 0 73.2 10 Jul Jul-02 1029.6 1120.7 0 48% 2,106.8 145.4 279.6 95.4 0 95.4 32 Aug Aug-02 1556.5 615.5 0 72% 2,082.2 144.5 275.7 43.3 0 43.3 55 Sep Sep-02 1579.0 465.3 0 77% 1,932.9 138.7 177.0 56.5 0 56.5 67 Oct Oct-02 1913.4 0.0 0 100% 1,832.0 146.2 200.4 29.0 0 29.0 684 Nov Nov-02 1051.8 668.6 44.5 64% 1,629.8 141.5 179.5 64.2 0 64.2 740 Dec Dec-02 1465.0 0.0 0 100% 1,397.8 144.1 230.4 201.2 0 201.2 279 Jan Jan-03 1024.1 601.4 0 63% 1,489.4 111.9 262.6 0.0 0 0.0 1768 Feb Feb-03 1012.9 330.3 0 75% 1,236.3 118.7 253.8 640.9 0 640.9 2203 Mar Mar-03 1315.0 100.5 0 93% 1,320.1 142.6 256.0 403.9 0 403.9 2629 Apr Apr-03 1733.6 0.0 0 100% 1,603.5 134.4 252.9 95.8 0 95.8 3833 May May-03 273.0 1840.9 0 13% 1,851.0 140.4 247.9 53.9 0 53.9 18 Jun Jun-03 0.0 2003.0 0 0% 1,794.3 107.0 241.6 42.3 0 42.3 0 Jul Jul-03 0.0 2422.9 0 0% 2,158.1 132.1 113.3 75.3 0 75.3 0 Aug Aug-03 84.1 2438.8 0 3% 2,247.1 142.3 107.8 101.4 0 101.4 3 Sep Sep-03 147.0 2292.8 12.3 7% 2,112.4 132.4 103.7 138.4 0 138.4 31 Oct Oct-03 2188.6 43.1 6.9 98% 2,091.2 140.7 132.0 158.3 0 158.3 1418 Nov Nov-03 1079.3 743.0 11.1 60% 1,581.9 125.7 147.6 0.0 0 0.0 1162 Dec Dec-03 966.9 698.0 39.91 60% 1,505.4 142.4 145.6 0.0 0 0.0 1482 Jan Jan-04 1638.5 0.0 5.4 100% 1,564.8 126.5 170.0 0.0 0 0.0 2199 Feb Feb-04 784.0 639.1 0 55% 1,201.7 82.5 266.8 841.4 0 841.4 2389 Mar Mar-04 0.0 1742.7 54.8 3% 1,531.8 75.3 275.1 331.5 0 331.5 2775 Apr Apr-04 254.3 1165.9 556.2 57% 1,643.0 127.5 262.1 0.0 0 0.0 1401 May May-04 773.3 1261.9 413.1 58% 2,080.2 170.2 170.7 0.0 0 0.0 1572 Jun Jun-04 572.3 1744.5 0 25% 2,072.5 194.48 143.0 0.0 0 0.0 63 Jul Jul-04 0.0 2501.6 0 0% 2,285.1 210.6 130.0 64.0 0 64.0 0 Aug Aug-04 0.0 2399.8 0 0% 2,250.2 210.3 123.6 101.4 0 101.4 0 Sep Sep-04 0.0 2201.5 0 0% 2,121.6 210 119.6 108.9 0 108.9 0 Oct Oct-04 1760.4 0.0 0 100% 1,665.9 202.1 122.4 1220.7 0 1220.7 2341 Nov Nov-04 690.9 605.3 0 53% 1,187.3 189.4 184.7 155.7 0 155.7 1037 Dec Dec-04 1275.5 0.0 0 100% 1,218.6 211.5 232.2 636.1 0 636.1 897 Jan Jan-05 1089.5 0.0 0 100% 1,041.2 183.9 235.5 3101.5 0 3101.5 46 Feb Feb-05 600.9 513.0 0 54% 1,004.7 93.2 210.8 3464.6 4697.4 8162.0 28 Mar Mar-05 0.0 1665.9 0 0% 1,385.7 75.2 23.3 2297.7 0 2297.7 0 Apr Apr-05 608.5 1471.6 0 29% 1,826.1 21.6 138.1 545.3 1875.1 2420.4 30 May May-05 561.5 1520.0 95.9 32% 1,757.1 106.2 286.2 314.9 1852.6 2167.5 33 Jun Jun-05 23.8 2344.7 0 1% 2,048.9 107.6 160.3 44.4 520.5 564.9 1 Jul Jul-05 0.0 2572.8 0 0% 2,248.5 141.4 171.9 40.2 0 40.2 0 Aug Aug-05 0.0 2500.2 0 0% 2,215.9 104.9 170.3 34.7 0 34.7 0 Sep Sep-05 1292.0 958.5 0 57% 2,018.8 108.6 161.8 0.0 0 0.0 70 Oct Oct-05 0.0 2046.4 0 0% 1,717.6 180.7 169.2 65.0 0 65.0 0 Nov Nov-05 0.0 1786.6 0 0% 1,598.8 192.2 146.1 99.6 0 99.6 0 Dec Dec-05 889.6 738.8 0 55% 1,460.6 211.4 169.0 9.0 0 9.0 48 Jan Jan-06 967.0 680.3 0 59% 1,433.8 130.6 168.7 94.8 13974.2 14069.0 64 Feb Feb-06 1690.3 0.0 0 100% 1,583.6 0 138.1 391.7 0 391.7 111 Mar Mar-06 807.2 793.9 0 50% 1,389.2 33.8 141.8 529.5 0 529.5 47 Apr Apr-06 1474.4 0.0 0 100% 1,375.4 174.1 216.9 347.9 0 347.9 98 May May-06 818.9 812.5 0 50% 1,562.8 189.4 321.3 45.4 0 45.4 51 Jun Jun-06 1319.4 634.6 0 68% 1,806.7 202.9 295.8 10.5 0 10.5 74 Jul Jul-06 0.0 2255.9 0 0% 2,090.3 157.3 270.4 30.3 0 30.3 0 Aug Aug-06 0.0 2252.1 0 0% 2,070.5 193.6 198.4 37.4 0 37.4 1 Sep Sep-06 0.0 2048.7 0 0% 1,842.6 180.6 300.0 -0.1 0 -0.1 0 Oct Oct-06 0.0 1815.3 0 0% 1,544.4 174.1 340.8 0.0 0 0.0 0 Nov Nov-06 1335.4 182.2 0 88% 1,348.9 173.5 328.5 60.3 0 60.3 110 Dec Dec-06 1344.1 0.0 0 100% 1,238.9 195.5 346.3 0.0 0 0.0 105 Jan Jan-07 1453.0 0.0 0 100% 1,318.6 183.7 309.9 139.7 0 139.7 133

APPENDIX D DETECTED ORGANICS FROM USGS 125 STUDY Detected Organics from USGS Route 125 Study - Sweetwater Reservoir Near Pump Tower

Sample Bromo- Di- Benzyl Bis(2- Di-n- Datetime Di- di- Tri- bromo- Tri- Di- Chloro- Bromo- Tri- n-butyl Ben- ethyl- butyl Hexa- Sima- Prome- Prome- bromo- chloro- bromo- chloro- chloro- chloro- form chloro- bromo- phthal- Chloro- tazon, hexyl) phthal- zinone, zine, tryn, ton, methane methane methane methane methane methane methane Toluene Benzene methane ate, methane Phenol, Phenol, water, phthalate, water, water, water, water, water, water, water, water, water, water, water, water, water, water, water, water, water, fltrd ate, water, fltrd, fltrd, fltrd, fltrd, unfltrd unfltrd unfltrd unfltrd unfltrd unfltrd unfltrd unfltrd fltrd, unfltrd unfltrd fltrd, unfltrd 0.7u GF wat unf unfltrd ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 1998-09-09 15:50 .024 E .01 < .20 E .07 < .40 < .7 E .10 E0.099 <0.176 < .20 < .40 < 1.0 1998-09-09 16:00 .019 E .01 E .04 1.76 .23 1.4 1.54 1.54 E0.160 < .10 < .20 < .5 1998-11-03 10:30 .020 E .01 < .10 .86 < .20 .6 .67 0.669 <0.088 E .06 < .20 < .5 1998-11-03 10:40 .019 E .01 < .10 .26 < .20 E .2 .25 0.252 <0.088 < .10 < .20 < .5 1999-01-06 09:30 .018 E .01 < .10 1.66 E .22 1.4 .96 0.964 <0.088 E .03 < .20 < .5 1999-03-01 10:30 < .020 < .02 < .05 .30 < .10 E .2 .39 0.391 E0.013 < .05 < .10 < .2 1999-03-01 10:45 < .020 < .02 < .05 .13 < .10 E .1 .12 0.12 <0.044 E .02 E .01 < .2 1999-05-03 11:15 .013 E .01 < .05 .25 < .10 .2 .32 0.321 <0.044 E .01 < .10 E .1 1999-05-03 11:30 .014 E .01 < .05 .50 E .08 .4 .32 0.324 <0.044 < .05 < .10 < .2 1999-07-12 11:20 .015 < .02 < .05 < .05 < .10 < .2 E .07 E0.035 E0.071 E0.012 E .02 E .01 M 1999-07-12 11:30 .011 < .02 < .05 .14 E .04 E .1 .10 0.102 <0.044 E .03 < .10 < .2 1999-09-20 11:40 .016 E .01 < .05 E .04 < .06 < .2 .12 E0.018 0.116 <0.044 E .07 < .04 < .5 1999-09-20 11:50 .014 E .01 < .05 .13 < .06 E .1 .18 0.176 <0.044 E .08 < .04 < .5 1999-11-29 13:00 .015 E .01 < .05 1.07 .16 .9 1.14 E .04 < .04 < .5 2000-03-13 12:20 < .008 .018 < .005 E .01 < .05 .77 E .10 .6 .58 < .05 < .04 < .5 2000-06-12 11:40 .014 E .01 < .05 < .05 < .06 < .2 .21 < .05 E .01 < .5 2000-06-12 11:50 .014 < .02 < .05 .13 < .06 E .1 E .09 < .05 < .04 < .5 2000-09-05 11:50 .012 E .01 < .05 .66 .17 .7 .51 E .01 < .04 M 2000-12-04 12:20 .011 E .01 < .05 .53 .12 .4 .35 E .03 E .01 < .2 2001-03-20 12:40 E .007 E .01 < .05 .13 < .06 E .1 .14 E .04 < .04 < .2 2001-03-20 12:50 E .006 E .01 < .05 .22 < .06 .2 .24 E .03 E .01 < .2 2001-06-06 10:10 E .005 E .01 < .05 E .03 < .06 < .2 .16 < .05 < .04 < .2 2001-06-06 10:20 E .006 E .01 < .05 .10 E .04 E .1 E .08 E .01 < .04 < .2 2001-09-06 09:40 < .011 E .01 < .05 .15 < .06 < .2 .66 < .05 < .04 < .2 2001-12-10 11:20 E .005 E .01 < .05 .40 E .07 .3 .32 E .03 E .01 < .2 2002-03-20 10:00 < .008 < .01 < .05 .20 < .06 E .2 .19 < .05 < .04 < .2 2002-06-11 09:30 < .005 < .01 < .05 2.07 .47 2.1 1.11 < .05 < .04 E .2 < .2 .5 < .01 2002-09-17 10:00 < .010 E .01 < .05 .46 < .06 .4 .40 < .05 < .04 E .1 < .2 1.4 < .01 2002-12-11 11:20 < .005 < .01 < .05 .19 < .10 .2 .13 < .05 < .04 < .2 2003-02-14 11:30 .006 < .005 M < .05 1.03 .19 .9 1.34 < .05 < .04 E .2 < .2 < .5 < .01 2003-04-08 11:00 .007 < .005 M < .05 E .10 E .05 E .1 E .07 < .05 < .04 < .2 2003-06-17 11:30 < .013 .010 < .005 E .01 < .05 .11 < .10 E .1 E .08 < .05 < .04 < 2 < .2 E .2 E .01 < 2 < 2 2003-06-17 11:40 < .05 .20 < .10 .2 .22 < .05 < .04 < .2 2003-08-19 11:30 E .009 .008 < .005 E .01 < .05 .18 E .04 .2 .11 < .05 < .04 E .8 < 2 < .2 < .5 E .3 E .01 E 1 < 2 2003-08-19 11:50 E .009 .008 < .005 E .01 < .05 E .02 < .10 < .2 E .09 E .01 < .04 < .5 < .2 E .5 E .01 2003-10-14 13:30 < .013 .008 < .005 .01 < .05 .29 < .10 .3 .32 < .05 < .02 E .1 < 2 < .2 E .3 E .1 E .01 < 2 < 2 2003-12-16 12:00 < .013 .005 < .005 M < .05 .48 .11 .4 .33 E .03 < .02 E .1 < 2 < .2 < .5 < 1.6 < .01 < 2 M 2004-02-17 15:40 E .009 .006 E .003 M < .05 .76 E .16 .6 .53 E .01 < .02 E .1 E 2 < .2 .6 E .7 < .01 < 2 E 2 2004-04-13 11:20 E .009 .010 E .004 M < .05 .25 < .10 .2 .22 E .01 < .02 M < 2 < .2 E .3 E .2 < .01 < 2 < 2 2004-04-13 11:40 < .05 .48 E .08 .4 .57 < .05 < .02 < .2 2004-07-13 13:20 < .05 .28 < .10 .3 .36 < .05 < .02 < .2 2004-07-13 13:30 < .05 .11 < .10 .1 .11 < .05 < .02 < .2 < .01 2004-10-12 13:00 < .013 .008 < .005 < .01 < .05 < .03 < .10 < .1 E .04 < .02 < .02 < 2 < .2 < 1.6 < .01 < 2 < 2 2005-01-12 11:30 E .012 .014 < .008 .01 < .05 E .03 < .10 < .1 E .03 < .02 < .02 < 2 < .2 E .1 < .01 < 2 < 2 2005-04-12 13:10 < .05 E .08 < .10 < .1 E .07 < .02 < .02 < 2 < .2 E .2 < .01 < 2 < 2 2005-07-12 11:00 < .05 < .03 < .10 < .1 E .04 < .02 < .02 < 2 < .2 E .4 < .01 < 2 < 2

Sample 1,2, Carbon Ethyl- Datetime Hexa- Tri- Disulfide benzene Tert- m and p Styrene 4- Teb- Metola- Mala- Diazi- Atra- chloro- Diuron, Caf- Meta- Imaze- Meta- Acetone Methyl Butyl Xylene Chloro uthiuron chlor, thion, non, zine, benzene 2,4-D, water, feine, OIET, laxyl, thapyr, laxyl, Benzene methyl toluene water, water, water, water, water, water, fltrd water, water, water, water, water, ether fltrd, fltrd, fltrd, fltrd, unfltrd fltrd, 0.7u GF fltrd, fltrd, fltrd, fltrd, fltrd, ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 1998-09-09 15:50 < .002 < .005 .012 < .001 0.224 <1.48 <0.680 1998-09-09 16:00 < .002 .009 E .003 < .001 <0.74 <0.340 1998-11-03 10:30 < .002 < .005 E .004 < .001 <0.74 <0.340 1998-11-03 10:40 < .002 < .005 < .010 < .001 <0.74 <0.340 1999-01-06 09:30 < .002 < .005 < .010 < .001 <0.74 E0.250 1999-03-01 10:30 < .002 < .005 < .002 < .001 <0.37 0.209 1999-03-01 10:45 < .002 < .005 .007 < .001 E0.37 0.253 E0.015 1999-05-03 11:15 < .002 < .005 E .003 < .001 <0.37 E0.112 1999-05-03 11:30 < .002 < .005 .007 < .001 <0.37 E0.053 1999-07-12 11:20 < .002 < .005 < .002 < .001 E0.03 E0.100 0.009 1999-07-12 11:30 < .002 < .005 < .002 < .001 <0.37 E0.107 E0.014 1999-09-20 11:40 < .002 < .005 < .010 < .001 E1.780 E0.08 E0.107 0.005 0.060 1999-09-20 11:50 < .002 < .005 < .002 < .001 <0.07 E0.01 E0.110 0.060 1999-11-29 13:00 < .002 < .005 < .002 < .001 2000-03-13 12:20 < .002 < .005 .007 < .001 < .02 E0.01 2000-06-12 11:40 < .002 < .005 < .002 < .001 E0.04 2000-06-12 11:50 < .002 < .005 .007 < .001 2000-09-05 11:50 < .002 < .010 .005 < .001 2000-12-04 12:20 < .013 < .027 E .002 < .007 M 2001-03-20 12:40 E .003 < .027 .006 E .002 E0.01 2001-03-20 12:50 < .013 < .027 .006 E .002 M 2001-06-06 10:10 < .013 < .027 .006 < .007 E0.01 2001-06-06 10:20 < .013 < .027 E .004 < .007 E0.01 2001-09-06 09:40 < .013 < .027 < .005 < .007 2001-12-10 11:20 < .013 < .027 < .005 < .007 2002-03-20 10:00 < .013 < .027 < .005 < .007 2002-06-11 09:30 < .013 < .027 < .005 < .007 < .02 .04 < .5 < .008 < .02 < .02 2002-09-17 10:00 < .013 < .027 < .005 < .007 < .02 .03 < .5 E .008 < .02 < .02 2002-12-11 11:20 < .013 < .027 < .005 < .007 2003-02-14 11:30 E .003 < .027 E .004 < .007 < .02 .02 < .5 E .005 < .02 < .02 < .005 2003-04-08 11:00 < .013 < .027 .008 < .007 < .005 2003-06-17 11:30 < .013 < .027 < .005 < .007 < 2 E .02 .04 < .010 < .008 < .02 < .02 < .005 2003-06-17 11:40 2003-08-19 11:30 < .013 < .027 E .005 E .003 < 2 < .02 E .03 < .5 E .010 < .02 < .02 < .005 2003-08-19 11:50 < .013 < .027 < .005 < .007 < .02 E .04 < .5 E .009 < .02 < .02 < .005 2003-10-14 13:30 < .013 < .027 < .005 < .007 < 1 < .02 E .03 < .5 E .007 < .02 < .02 < .005 2003-12-16 12:00 < .013 < .027 < .005 < .007 < 1 < .02 .02 < .5 E .004 < .02 < .02 < .005 2004-02-17 15:40 E .005 E .006 < .005 E .002 < 1 < .02 E .04 < .5 < .008 < .02 < .02 < .005 2004-04-13 11:20 < .013 < .027 < .005 < .007 < 1 E .02 .11 E .1 < .008 < .02 < .02 < .005 2004-04-13 11:40 2004-07-13 13:20 2004-07-13 13:30 < .009 < .02 .06 .015 E .011 < .02 E .01 2004-10-12 13:00 < .006 < .027 < .005 < .007 < 1 < .04 .06 < .018 < .032 < .01 < .04 < .005 2005-01-12 11:30 .009 < .027 < .010 .010 < 1 < .04 .10 .035 < .032 .05 < .04 .037 2005-04-12 13:10 < .008 < 1 < .04 E .05 E .035 < .032 < .01 < .04 2005-07-12 11:00 < .008 < 1 < .04 .05 .050 < .032 < .01 < .04

Note: Blanks mean sample was either non detected or not sampled Detected Organics from USGS Route 125 Study - Perdue Effluent

Sample Bromo- Di- Benzyl 1,1,1- 1,1,2- Datetime di- Tetra- Tri- bromo- Tri- Bromo- Chloro- Tri- n-butyl Di- Tetra- Tri- Tri- Hexa- Sima- Prome- Prome- chloro- chloro- bromo- chloro- chloroform form bromo- phthal- Chloro- Chloro- Chloro- chloro- chloro- chloro- chloro- zinone, zine, tryn, ton, CIAT, methane methane methane methane methane Toluene Benzene methane ate, benzene ethane, methane methane ethene, ethane, ethane water, water, water, water, water, water, water, water, water, water, water, water, water, water, water, water, water, water, water, water, fltrd, fltrd, fltrd, fltrd, fltrd, unfltrd unfltrd unfltrd unfltrd unfltrd unfltrd unfltrd fltrd, unfltrd unfltrd unfltrd unfltrd unfltrd unfltrd unfltrd ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 01/07/99 0.016 E .01 < .002 26.6 E .04 4.11 24.4 13.2 4.114 13.2 < .10 < .20 < .06 < .2 < .5 < .8 < .20 < .06 03/02/99 < .005 < .02 < .002 32.1 E .06 3.16 24.8 17.4 3.162 17.4 E .01 E .01 < .03 M E .1 < .4 < .10 < .03 05/03/99 0.015 E .01 < .002 26.8 E .04 6.08 28.9 12.8 6.085 12.8 < .05 < .10 < .03 E .1 E .2 E .1 < .10 < .03 07/12/99 0.011 M < .002 36.9 E .04 11.2 44.9 17 11.24 16.9 < .05 < .10 < .03 < .1 E .3 E .1 < .10 < .03 09/20/99 0.009 < .02 < .002 4.38 < .06 0.24 2.3 6.17 0.243 6.17 E .01 E .01 < .03 < .1 E .1 M < .10 E .03 0.060 11/29/99 < .010 < .02 < .002 18.7 E .07 1.36 13.7 16.7 < .05 < .04 E .01 < .1 E .3 E .1 < .10 E .02 01/01/00 03/13/00 0.017 E .01 < .002 41.1 E .05 6.01 36.6 20.4 < .05 < .04 < .03 < .1 E .2 M < .10 < .03 06/12/00 0.012 < .02 < .002 E 46.3 E .04 < .06 E 46.7 E 22.2 < .05 < .04 < .03 < .1 E .2 E .2 < .10 < .03 09/05/00 0.014 < .02 < .002 62.9 E .08 11.5 60.1 42 < .05 E .01 < .03 E .1 E .4 E .3 E .01 M 12/04/00 E .009 E .01 < .006 21.6 E .06 7.08 22.2 11.3 E .03 E .02 < .03 < .1 E .1 < .2 < .10 < .03 03/20/01 E .005 M < .006 4.67 E .04 0.5 3.1 4.12 E .03 < .04 < .03 < .1 E .2 < .2 < .10 < .03 04/26/01 06/05/01 E .006 E .01 < .006 27.5 E .06 7.48 31 11.7 E .03 < .04 < .03 < .1 E .1 < .2 < .10 < .03 07/24/01 09/06/01 E .007 E .01 < .006 66.6 E .06 8.79 61.1 44.8 < .05 < .04 < .03 < .1 E .3 < .2 E .01 E .02 12/10/01 E .005 M < .006 14.5 E .05 4.52 12.3 8.67 E .01 < .04 < .03 < .1 < .2 < .2 < .03 < .03 03/20/02 21.3 E .11 6.39 20.7 11 < .05 < .04 < .03 < .1 E .1 M < .03 < .03 06/11/02 0.012 E .01 < .006 18.4 E .05 6.19 22.5 9.62 < .05 < .04 E 24.0 < .03 E .1 E .2 M < .03 < .03 09/17/02 0.007 < .01 < .006 17.7 < .06 3.72 17.5 12.4 < .05 < .04 E 61.0 < .03 < .1 E .1 < .2 < .03 < .03 12/11/02 0.006 M < .006 9.78 E .04 2.6 10.6 4 < .05 < .04 E 14.0 < .03 < .1 E .1 M < .03 < .03 02/11/03 < .005 < .01 < .006 7.08 E .02 1.9 7.1 3.04 < .05 E .02 E 11.0 E .02 < .1 E .1 M < .03 < .03 04/09/03 0.013 < .005 M < .006 7.34 < .07 2.11 7.8 3.19 < .05 < .04 E 8.3 < .03 < .1 < .2 M < .03 < .03 06/17/03 < .013 0.01 < .005 E .01 < .006 28.3 0.15 7.71 27.6 19.6 < .05 < .04 < 2 < .03 < .1 E .2 E .1 < .03 < .03 08/20/03 E .008 0.007 < .005 E .01 < .006 29.4 0.2 10.1 34.9 15.8 E .01 < .04 E 16.0 < 2 < .03 E .1 E .3 E .1 < .03 < .03 10/15/03 E .012 0.006 < .005 M E .003 11.6 < .06 1.34 8 7.01 < .05 < .02 E 16.0 < 2 < .03 < .1 < .2 < .1 < .06 < .03 12/17/03 < .013 E .004 < .005 0.01 < .006 16.1 < .06 3.77 15.1 6.8 E .02 < .02 E 31.0 < 2 < .03 < .1 E .2 E .1 < .06 < .03 02/18/04 E .009 0.006 < .005 M E .001 19 E .04 4.12 17 11.5 E .01 < .02 E 49.0 < 2 < .03 < .1 E .1 M < .06 < .03 04/14/04 E .009 0.01 < .005 M < .006 24.4 E .07 6.69 25.7 16.3 < .05 < .02 E 7.0 < 2 < .03 < .1 E .2 M < .06 < .03 07/13/04 0.014 0.012 < .005 0.01 < .006 18.4 < .06 2.93 15.3 15.2 E .02 < .02 < .03 < .1 E .1 < .1 < .06 < .03 10/12/04 < .03 3.26 < .06 0.49 2 3.27 < .02 < .02 < 2 < .03 < .1 E .1 M < .03 < .03 01/12/05 < .03 3.09 < .06 0.99 2.5 1.92 < .02 < .02 < 2 < .03 < .1 E .1 M < .03 < .03 04/13/05 < .03 17.1 < .06 2.38 9.8 8.97 E .01 < .02 E 1 < .03 < .1 E .1 < .1 < .03 < .03 07/12/05 < .03 8.13 < .06 0.89 6 6.36 < .02 < .02 < 2 < .03 < .1 E .1 < .1 < .03 < .03

Tebuthiu Sample 1,2,3,4 Fonotos Styrene ron Datetime 1,4-Di- Ben- Meth- 3,4-Di- Acetone Carbon Hexa- Tert- 4-Methyl- Tetra- chloro- Linuron tazon, Metola- Diazi- Atra- omyl, Diuron, Caf- Meta- chloro- disul- chloro- Butyl Methyl- Methyl- benzene water, water, chlor, non, zine, 2,4-D, water, water, feine, OIET, laxyl, aniline fide ethane methyl 2-penta benzene water, fltrd fltrd water, water, water, water, fltrd fltrd water, water, water, water, ether none fltrd, 0.7u GF 0.7u GF fltrd, fltrd, fltrd, fltrd, 0.7u GF 0.7u GF fltrd, fltrd, fltrd, fltrd, ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 01/07/99 < .002 < .002 < .001 E0.24 0.46 0.02 03/02/99 < .002 < .002 < .001 E3.987 E0.006 E0.166 E0.522 05/03/99 < .002 < .002 < .001 E4.564 E0.048 07/12/99 < .002 < .002 < .001 E0.02 E0.073 09/20/99 0.004 < .002 < .001 E6.319 0.724 11/29/99 0.005 < .002 < .001 7.1 01/01/00 03/13/00 < .002 < .002 < .001 E5.5 E0.01 06/12/00 < .002 < .002 < .001 8.9 09/05/00 < .002 < .002 < .001 13 12/04/00 < .013 < .005 < .007 E4.0 03/20/01 E .003 E .001 E .003 E5.4 04/26/01 06/05/01 < .013 < .005 < .007 E0.01 07/24/01 09/06/01 < .013 < .005 < .007 12/10/01 < .013 < .005 < .007 03/20/02 06/11/02 < .5 < .01 < .01 < .013 < .005 < .007 < .02 < .004 0.03 < .5 < .008 < .02 09/17/02 < .5 < .01 < .01 < .013 < .005 < .007 E .01 < .004 < .01 < .5 < .008 < .02 12/11/02 < .5 E .01 < .01 E .001 < .005 E .005 < .02 < .004 < .01 < .5 < .008 < .02 02/11/03 < .5 < .01 < .01 < .013 < .005 < .007 < .02 < .004 0.03 < .5 E .007 < .02 04/09/03 < .5 < .01 < .01 E .005 < .005 E .005 E .01 < .004 E .12 < .5 < .008 < .02 < .004 06/17/03 < .01 E .01 < .013 < .005 < .007 E .01 < .004 E .04 < .010 E .006 < .02 < .004 08/20/03 E .1 < .01 E .01 < .013 < .005 E .003 E .01 < .004 E .02 < .5 E .011 < .02 < .004 10/15/03 < .5 < .01 M E .007 < .005 E .005 0.03 E .004 < .01 < .5 E .004 < .02 < .004 12/17/03 < .5 < .01 < .01 < .013 < .005 < .007 < .02 < .004 0.02 < .5 E .004 < .02 < .004 02/18/04 < .5 < .01 < .01 E .005 < .005 E .002 < .02 < .004 E .04 < .5 < .008 < .02 E .002 04/14/04 < .5 < .01 < .01 < .013 < .005 < .007 0.02 < .004 0.1 < .5 < .008 < .02 < .004 07/13/04 < .01 < .01 < .013 < .005 < .007 < .02 < .004 0.05 < .010 E .014 < .02 < .004 10/12/04 < .01 < .01 < .008 E .02 < .020 0.04 E .014 E .018 < .01 01/12/05 < .01 < .01 < .008 < .04 < .020 0.05 E .012 E .015 < .01 04/13/05 < .01 < .01 < .008 < .04 < .020 0.08 0.027 < .032 0.02 07/12/05 < .01 < .01 < .008 < .04 < .020 0.05 0.024 < .032 < .01

Note: Blanks mean sample was either non detected or not sampled Detected Organics from USGS Route 125 Study - Sweetwater River at Low-Flow Barrier

Sample Tri- Di- 3,4- Datetime Tri- Di- Tetra- chloro- chloro- Dichloro Diphen- Sima- Prome- chloro- Ethyl- Iso- Chloro- Chloro- chloro- chloro- fluoro- di- aniline amid, zine, ton, methane Toluene Benzene benzene phorone form methane methane Phenol, ethene, methane fluoro- Phenol, water, water, water, water, water, water, water, water, water, water, water, water, water, methane water, fltrd, fltrd, fltrd, unfltrd unfltrd unfltrd unfltrd fltrd, unfltrd unfltrd fltrd, unfltrd unfltrd wat unf unfltrd ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 01/06/99 0.007 < .02 < .10 E .07 < .20 < .06 <0.104 < .5 E .1 < .20 < .18 < .28 01/07/99 0.011 M < .10 E .06 E .02 < .06 <0.104 < .5 < .8 < .20 < .18 < .28 03/02/99 < .010 E .01 < .05 E .03 E .01 < .03 <0.052 M < .4 E .01 < .09 E .03 05/03/99 0.007 E .01 < .05 < .05 < .10 < .03 <0.052 E .1 < .4 < .10 < .09 < .14 07/12/99 < .005 < .02 E .03 E .11 < .20 < .06 E0.028 < .5 < .8 < .20 < .18 < .28 09/20/99 < .005 E .01 < .05 < .05 < .04 < .03 <0.052 < .5 < .4 < .10 < .09 E .06 11/29/99 0.007 E .01 E .01 E .09 < .04 E .01 < .5 < .4 < .10 < .09 < .27 01/29/00 0.008 E .01 01/29/00 0.009 E .01 01/30/00 < .005 < .02 01/30/00 < .010 < .02 03/13/00 0.012 E .01 < .05 E .02 < .04 < .03 < .5 < .4 < .10 < .09 E .03 06/12/00 < .005 < .02 < .05 < .05 < .04 < .03 < .5 < .4 < .10 < .09 < .27 09/05/00 < .005 M < .05 E .02 < .04 < .03 < .5 < .4 < .10 < .09 < .27 12/04/00 E .005 E .01 < .02 E .01 < .04 < .03 < .2 < .2 E .01 < .09 E .08 03/20/01 E .008 0.02 < .02 E .06 < .04 < .03 < .2 < .2 < .10 < .09 < .27 06/05/01 < .011 E .01 < .02 E .07 < .04 < .03 < .2 < .2 < .10 < .09 E .06 09/06/01 < .011 E .01 E .04 < .05 < .04 < .03 < .2 < .2 < .10 < .09 < .27 12/10/01 E .004 E .01 < .02 E .04 < .04 < .03 < .2 < .2 < .03 < .09 E .10 03/20/02 E .02 < .007 0.02 < .02 < .05 < .04 < .03 < .5 < .2 < .2 < .5 < .03 < .09 < .18 06/11/02 < .03 < .005 < .01 < .02 < .05 < .04 < .03 < .2 < .2 < .03 < .09 < .18 09/17/02 < .03 < .005 0.02 < .02 < .05 < .04 < .03 E .2 < .2 < .2 < .5 < .03 < .09 < .18 12/12/02 M < .005 E .01 < .02 < .05 < .04 E .03 < .5 < .2 < .2 < .5 < .03 < .09 < .18 02/11/03 M < .005 E .01 < .02 < .05 < .04 < .03 < .5 < .2 < .2 < .5 < .03 < .09 < .18 04/09/03 M E .005 E .01 < .02 E .01 < .04 < .03 < .5 < .2 < .2 < .5 < .03 < .09 E .07 06/18/03 M < .005 E .01 < .02 < .05 < .04 < .03 < .2 < .2 < .03 < .09 E .06 E .2 08/20/03 M < .005 E .01 < .02 < .05 < .04 < .03 < .5 < .2 < .2 E .2 < .03 < .09 < .18 E 1.5 10/15/03 M < .005 0.01 < .02 < .05 < .02 < .03 < .5 < .2 < .1 E .2 < .06 0.16 < .18 E .2 12/17/03 M E .004 0.01 < .02 < .05 < .02 < .03 < .2 < .1 < .06 < .16 < .18 < 1.6 02/18/04 M 0.006 0.01 < .02 E .02 < .02 < .03 < .5 < .2 < .1 < .5 < .06 < .16 < .18 E .3 04/14/04 < .03 E .004 0.01 < .02 < .05 < .02 < .03 < .5 < .2 < .1 E .3 < .06 < .16 < .18 E .4 07/14/04 < .03 < .010 E .01 < .02 < .05 < .02 < .03 < .2 < .1 < .06 < .16 < .18 < 1.6 10/13/04 M < .005 M < .02 < .02 < .02 < .03 < .2 < .1 < .03 < .08 < .18 E .2 10/13/04 01/13/05 M 0.012 0.01 < .02 < .02 < .02 < .03 < .2 < .1 < .03 < .08 < .18 E .2 04/13/05 < .02 E .01 < .02 < .03 < .2 < .1 < .03 < .08 < .18 E .2 07/13/05 < .01 < .02 E .02 < .02 < .03 < .2 < .1 < .03 < .08 < .18 E .7

Sample Bis(2- Datetime ethyl- Tri- Sulfo- 3,4-Di- cis-1,2 Tert- dichloro- Tebuthiur hexyl) chloro- Diazi- Neburon Diuron, Caf- met- Imaze- chloro- Butyl- Styrene ethylene on Siduron phthal- ethylene non, 2,4-D, water, water, feine, ruron, OIET, thapyr, aniline Methyl- water, ate, water, water, water, fltrd fltrd water, water, water, water, water, ether fltrd, wat unf unfltrd fltrd, fltrd, 0.7u GF 0.7u GF fltrd, fltrd, fltrd, fltrd, fltrd, ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 01/06/99 < .08 < .010 E0.360 E0.050 01/07/99 < .08 < .010 E0.360 E0.096 03/02/99 E .02 < .002 E0.014 0.315 <0.042 05/03/99 E .05 < .002 E0.023 E0.056 E0.013 07/12/99 E .04 < .002 E0.029 E0.155 E0.028 09/20/99 E .04 < .002 E0.021 E0.146 <0.042 11/29/99 0.11 < .002 E0.05 0.11 01/29/00 < .002 E0.003 E0.003 0.01 01/29/00 < .002 01/30/00 < .002 01/30/00 < .002 03/13/00 E .02 E .003 0.019 E0.02 0.019 0.01 06/12/00 E .03 < .002 E0.003 E0.003 09/05/00 E .01 < .002 E0.04 E0.01 12/04/00 E .09 E .002 0.18 E0.01 03/20/01 E .03 E .004 0.02 06/05/01 E .04 E .004 E0.03 E0.01 09/06/01 < .04 < .005 E0.01 12/10/01 E .08 0.018 03/20/02 < .02 E .04 0.035 0.03 < .01 0.32 E .2 E .034 < .008 < .02 06/11/02 < .02 E .02 < .005 < .02 < .01 0.02 < .010 < .009 < .008 < .02 09/17/02 < .02 < .04 < .005 < .02 < .01 < .01 E .4 < .009 E .014 < .02 12/12/02 < .02 E .06 < .010 < .02 < .01 < .01 M < .009 < .008 < .02 02/11/03 E .01 E .05 < .005 < .02 < .01 < .01 < .5 E .004 < .008 < .02 04/09/03 < .02 E .04 E .004 < .02 < .01 < .01 < .5 < .009 < .008 < .02 < .004 06/18/03 < .02 E 1 E .04 < .005 < .02 < .01 E .02 < .010 < .009 < .008 < .02 < .005 08/20/03 < .02 < 2 E .01 < .005 < .02 < .01 < .01 0.6 < .009 < .008 E .01 0.012 10/15/03 < .02 < 2 E .03 < .005 < .02 E .01 < .01 < .5 < .009 E .012 < .02 E .004 12/17/03 < .02 < 2 E .06 < .005 < .02 < .01 0.02 < .010 < .017 E .006 < .02 < .004 02/18/04 < .02 < 2 E .03 E .003 < .02 < .01 E .02 < .5 < .009 < .008 < .02 0.009 04/14/04 < .02 < 2 E .04 < .005 < .02 < .01 < .02 < .5 < .009 < .008 < .02 0.005 07/14/04 < .02 < 2 < .04 < .005 < .02 < .01 < .01 < .010 < .009 < .008 < .02 0.005 10/13/04 < .02 < 2 E .02 < .005 < .04 < .01 < .01 < .018 < .038 E .009 < .04 < .004 10/13/04 01/13/05 < .02 E 4 < .04 0.012 < .04 < .01 0.18 0.037 E .021 < .032 < .04 0.013 04/13/05 < 2 < .04 07/13/05 < .02 < 2 E .05 < .04 < .01 0.02 < .018 < .038 < .032 < .04

Note: Blanks mean sample was either non detected or not sampled Detected Organics from USGS Route 125 Study - Sweetwater Reservoir East End Bound

Sample Bromo- Di- Datetime di- Tri- bromo- Tri- Chloro- Ben- Hexa- Sima- Prome- chloro- bromo- chloro- chloro- form Ethyl- tazon, Diazi- Atra- Diuron, zinone, zine, ton, methane methane methane methane Toluene Benzene benzene water, non, zine, water, water, water, water, water, water, water, water, water, water, water, fltrd water, water, fltrd fltrd, fltrd, fltrd, unfltrd unfltrd unfltrd unfltrd unfltrd unfltrd unfltrd 0.7u GF fltrd, fltrd, 0.7u GF ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 09/10/98 0.016 E .01 E .06 < .10 < .2 E .09 E0.087 < .05 < .10 < .03 E .002 < .001 11/03/98 0.019 E .01 E .08 < .10 E .1 0.11 0.114 < .05 < .10 < .03 0.005 < .001 01/06/99 0.018 E .01 E .10 < .20 < .4 E .11 E0.110 E .05 < .20 < .06 < .002 < .001 03/01/99 0.11 < .10 E .1 0.11 0.112 E .01 E .01 < .03 05/03/99 0.015 E .01 E .04 < .10 M E .04 E0.037 < .05 < .10 < .03 0.005 < .001 07/12/99 E .005 < .02 E .03 < .10 M E .03 E0.027 E .02 < .10 < .03 < .002 < .001 09/20/99 0.014 E .01 E .04 < .06 < .2 E .07 E0.067 0.27 E .04 E .04 < .010 < .001 11/29/99 0.017 E .01 0.25 < .06 0.3 0.33 E .04 < .04 < .03 < .002 < .001 03/13/00 0.019 E .01 E .06 < .06 M E .07 E .01 E .02 < .03 0.009 < .001 06/12/00 E .06 < .06 < .2 E .06 < .05 < .04 < .03 09/05/00 0.013 < .02 0.14 < .06 E .2 0.16 E .01 < .04 < .03 < .002 < .001 03/20/01 0.12 < .06 E .1 0.12 E .04 E .01 < .03 06/06/01 E .005 E .01 E .03 < .06 M E .03 E .03 M < .03 0.005 < .007 09/06/01 < .011 E .01 < .05 < .06 < .2 E .06 < .05 < .04 < .03 < .005 < .007 12/10/01 E .006 M E .05 < .06 < .2 E .05 E .03 E .01 < .03 < .005 < .007 03/20/02 0.008 E .01 0.14 < .06 E .1 0.14 < .05 < .04 < .03 < .005 E .005 06/11/02 < .015 E .01 < .05 < .06 < .2 < .02 < .05 < .04 < .03 < .005 < .007 09/17/02 < .013 < .01 E .06 < .06 < .2 E .09 < .05 < .04 < .03 < .005 < .007 12/11/02 < .005 < .01 E .07 < .10 E .1 E .06 < .05 < .04 < .03 < .005 < .007 02/14/03 0.006 E .01 E .08 < .10 E .1 E .08 < .05 < .04 < .03 0.011 < .007 04/08/03 0.006 M E .08 E .04 E .1 E .07 < .05 < .04 < .03 0.006 E .003 06/17/03 E .05 < .10 < .2 E .03 E .02 < .04 < .03 08/19/03 E .009 < .008 E .01 E .04 < .10 E .1 E .04 E .01 < .04 < .03 M E .003 < .007 E .03 10/14/03 0.11 < .10 E .1 0.12 < .05 < .02 < .03 E .01 < .009 E .03 12/16/03 E .10 < .10 E .1 E .09 < .05 < .02 < .03 < .01 < .009 0.02 02/17/04 0.14 < .10 0.1 0.11 E .01 < .02 < .03 04/13/04 0.17 < .10 0.1 0.16 E .01 < .02 < .03 07/13/04 < .03 < .10 < .1 E .02 E .01 < .02 < .03 10/12/04 < .03 < .10 < .1 E .02 < .02 < .02 < .03 01/12/05 < .03 < .10 < .1 E .01 < .02 < .02 < .03 04/12/05 E .03 < .10 < .1 E .03 < .02 < .02 < .03 07/12/05 < .03 < .10 < .1 E .02 < .02 < .02 < .03

Sample 1,2,3 1,2,4 1,3,5 N- Carbon 1,2,3,5 Tert- m- and Datetime 3,4-Di- Tri- Tri- Tri- Propyl- disulfide Tetra- Butyl- p- o Styrene o- Tebu- Caf- Myclo- chloro- Methyl- Methyl- Methyl- benzene Methyl- Methyl- xylene xylene Ethyl- thiuron feine, OIET, butanil aniline Benzene Benzene Benzene benzene ether toluene water, water, water, water, fltrd, fltrd, fltrd, fltrd, ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 09/10/98 <0.166 11/03/98 <0.17 01/06/99 E0.310 03/01/99 0.219 05/03/99 E0.050 07/12/99 E0.01 E0.100 E0.014 09/20/99 0.025 E0.089 E0.025 E0.010 E0.02 0.897 E0.160 E0.079 0.009 0.02 11/29/99 03/13/00 06/12/00 09/05/00 03/20/01 E0.02 06/06/01 E0.01 09/06/01 E0.02 12/10/01 03/20/02 06/11/02 09/17/02 12/11/02 02/14/03 E .007 < .004 04/08/03 < .008 < .004 06/17/03 08/19/03 0.018 E .007 < .008 E .004 10/14/03 E .011 E .006 12/16/03 < .010 E .004 02/17/04 04/13/04 07/13/04 10/12/04 01/12/05 04/12/05 07/12/05

Note: Blanks mean sample was either non detected or not sampled Detected Organics from USGS Route 125 Study - Sweetwater Reservoir Center at Minimum Pool

Sample Bromo- Di- Benzyl Datetime Di- di- Tri- bromo- Tri- Tri- n-butylDi- Bromo- Bromo- Chloro- Hexa- Sima- Prome- Prome- bromo- chloro- bromo- chloro- chloro- bromo- phthal- Chloro- chloro- chloro- form form zinone, zine, tryn, ton, methane methane methane methane methane Toluene Benzene methane ate, methane methane methane water, water, water, water, water, water, water, water, water, water, water, water, water, water, water, fltrd, fltrd, fltrd, fltrd, unfltrd unfltrd unfltrd unfltrd unfltrd unfltrd unfltrd fltrd, unfltrd unfltrd unfltrd ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 09/09/98 0.024 E .01 < .20 < .19 < .40 < .7 < .21 < .20 < .40 < 1.0 < 1.5 <0.176 <0.208 09/09/98 0.019 E .01 < .10 < .10 < .20 < .4 0.27 < .10 < .20 < .5 < .8 E0.092 0.27 11/03/98 0.019 E .01 < .10 E .11 < .20 < .4 E .15 < .10 < .20 < .5 < .8 E0.150 11/03/98 0.02 E .01 < .10 E .11 < .20 < .4 E .13 < .10 < .20 < .5 < .8 E0.130 01/06/99 0.016 E .01 < .10 E .14 < .20 E .1 E .14 < .10 < .20 < .5 < .8 E0.140 03/01/99 < .020 < .02 < .05 0.15 < .10 E .1 0.17 < .05 E .01 < .2 < .4 0.167 05/03/99 0.012 E .01 < .05 0.14 < .10 E .1 0.2 E .01 < .10 < .2 < .4 0.196 05/03/99 0.017 E .01 < .05 0.11 < .10 E .1 E .09 E .01 < .10 E .1 < .4 E0.092 07/12/99 < .010 < .02 < .05 < .05 < .10 < .2 E .02 < .05 < .10 < .2 < .4 E0.029 E0.017 07/12/99 0.011 M < .05 0.33 E .07 0.3 0.33 E .02 < .10 M M E0.069 0.332 09/20/99 0.016 E .01 < .05 < .05 < .06 < .2 0.12 < .05 < .04 < .5 M 0.118 09/20/99 0.013 E .01 < .05 E .05 < .06 < .2 E .10 E .01 < .04 < .5 < .4 E0.095 11/29/99 0.018 E .01 < .05 0.32 < .06 0.3 0.38 E .04 E .01 < .5 < .4 03/13/00 0.019 E .01 < .05 0.13 < .06 E .1 0.14 < .05 < .04 < .5 < .4 06/12/00 < .05 < .05 < .06 < .2 0.24 E .02 < .04 < .5 E .1 06/12/00 0.013 < .02 < .05 0.1 < .06 E .1 E .08 < .05 < .04 < .5 < .4 09/05/00 0.014 < .02 < .05 0.26 E .06 0.3 0.25 < .05 < .04 M < .4 12/04/00 E .009 M < .05 0.14 < .06 E .1 0.12 E .02 E .01 < .2 < .2 03/20/01 E .006 E .01 < .05 0.22 < .06 0.2 0.21 E .01 < .04 < .2 < .2 09/06/01 < .011 E .01 < .05 E .09 < .06 < .2 0.41 E .06 < .04 < .2 E .1 12/10/01 < .011 E .01 < .05 0.11 < .06 E .1 0.11 E .03 < .04 < .2 < .2 03/20/02 0.008 E .01 < .05 0.15 < .06 E .1 0.17 < .05 < .04 < .2 < .2 06/11/02 < .005 < .01 < .05 E .05 < .06 E .1 E .06 < .05 < .04 < .2 < .2 09/17/02 < .013 E .01 < .05 E .06 < .06 E .1 0.11 < .05 < .04 < .2 < .2 12/11/02 < .005 < .01 < .05 0.1 < .10 E .1 E .08 < .05 < .04 < .2 < .2 02/14/03 0.006 < .005 M < .05 0.12 < .10 E .2 0.11 < .05 < .04 < .2 < .2 04/08/03 0.006 < .005 E .01 < .05 0.12 < .10 E .1 E .09 < .05 < .04 < .2 < .2 06/17/03 < .05 0.16 < .10 E .2 0.18 < .05 < .04 < .2 M 06/17/03 < .013 < .009 < .005 E .01 < .05 0.11 < .10 E .1 E .08 < .05 < .04 < 2 < .2 < .2 08/19/03 E .008 0.008 < .005 E .01 < .05 E .09 < .10 E .1 E .08 < .05 < .04 < 2 < .2 < .2 08/19/03 E .008 0.008 E .003 E .01 < .05 < .05 < .10 < .2 E .07 < .05 < .04 < .2 M 10/14/03 < .013 0.01 < .005 0.01 < .05 0.23 < .10 0.2 0.23 < .05 < .02 < 2 < .2 < .1 12/16/03 < .013 0.007 < .005 0.01 < .05 0.18 < .10 0.2 0.17 E .02 < .02 < 2 < .2 < .1 02/17/04 < .5 < .05 0.25 < .10 0.2 0.21 E .01 < .02 E .1 E 1 < .2 < .1 04/13/04 < .5 < .05 0.23 < .10 0.2 0.21 E .01 < .02 M < 2 < .2 < .1 04/13/04 < .05 0.46 E .08 0.4 0.46 < .05 < .02 < .2 M 07/13/04 < .05 0.23 < .10 0.3 0.24 < .05 < .02 < 2 < .2 < .1 10/12/04 < .05 E .03 < .10 < .1 E .03 < .02 < .02 < 2 < .2 < .1 01/12/05 < .05 E .03 < .10 < .1 E .03 < .02 < .02 < 2 < .2 < .1 04/12/05 < .05 E .06 < .10 < .1 E .07 < .02 < .02 < 2 < .2 < .1 07/12/05 < .05 < .03 < .10 < .1 E .04 < .02 < .02 < 2 < .2 < .1

Sample Di-n- Datetime Ben- butyl 3,4-Di- Carbon Stryrene Tebuth-

tazon, phthal- Diazi- Atra- Diuron, Caf- chloro- Acetone disul- iuron Phenol, Phenol, water, ate, non, zine, 2,4-D, water, feine, OIET, aniline fide water, water, fltrd water, water, water, water, fltrd water, water, water, fltrd, unfltrd 0.7u GF unfltrd fltrd, fltrd, fltrd, 0.7u GF fltrd, fltrd, fltrd, ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 09/09/98 0.011 < .001 09/09/98 0.005 < .001 11/03/98 E .009 < .001 11/03/98 < .010 < .001 01/06/99 0.009 < .001 03/01/99 < .002 < .001 05/03/99 0.004 < .001 05/03/99 E .004 < .001 07/12/99 < .002 < .001 E0.04 07/12/99 < .002 < .001 0.008 09/20/99 < .010 < .001 E0.07 09/20/99 < .002 < .001 E2.212 11/29/99 < .002 < .001 03/13/00 0.007 < .001 06/12/00 E0.006 06/12/00 < .002 < .001 09/05/00 < .005 < .001 12/04/00 E .002 < .007 E0.02 E0.01 03/20/01 0.006 E .002 M 09/06/01 < .005 < .007 E0.02 M 12/10/01 < .005 < .007 03/20/02 < .005 < .007 06/11/02 < .005 < .007 09/17/02 < .005 < .007 12/11/02 < .005 < .007 02/14/03 E .003 < .007 < .004 04/08/03 0.006 < .007 < .004 06/17/03 06/17/03 E .3 E .01 < 2 < .005 < .007 E .02 E .05 < .010 < .008 < .004 08/19/03 < 3.4 E .01 < 2 < .005 E .003 < .02 0.03 0.021 < .008 < .004 08/19/03 E .01 E .003 < .007 < .02 0.04 0.012 E .008 0.008 10/14/03 < 1.6 E .01 < 2 < .005 < .007 < .02 E .03 E .012 E .006 0.007 12/16/03 E .6 M < .005 < .007 < .004 02/17/04 E .2 < 1.6 E 1 < .5 < .5 04/13/04 0.5 E .5 < 2 < .5 M 04/13/04 07/13/04 E .7 < 2 10/12/04 E .4 < 2 01/12/05 E .1 < 2 04/12/05 E .1 < 2 07/12/05 E 2.8 < 2

Note: Blanks mean sample was either non detected or not sampled Detected Organics from USGS Route 125 Study - Sweetwater Reservoir Minimum Pool Boundary East

Sample Bromo- Di- Datetime di- Tri- bromo- Tri- Carbon Bromo- Methyl Bromo- Chloro- Sima- Prome- chloro- bromo- chloro- chloro- Chloro- Diazi- dichloro- t-butyl form form zine, ton, methane methane methane methane Toluene Benzene methane non, sulfide methane ether, water, water, water, water, water, water, water, water, water, water, water, water, water, fltrd, fltrd, unfltrd unfltrd unfltrd unfltrd unfltrd unfltrd unfltrd fltrd, unfltrd unfltrd unfltrd ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 09/10/98 0.022 E .01 < .19 < .40 < .7 < .21 < .20 < .40 < 1.0 0.011 E .06 < .18 < .7 <0.208 09/10/98 0.017 E .01 E .15 < .20 E .1 0.27 < .10 < .20 < .5 0.006 < .74 E .04 < .3 0.274 11/03/98 0.019 E .01 0.12 < .10 E .1 0.16 < .05 < .10 < .2 0.007 < .37 < .04 E .1 0.156 01/06/99 0.017 E .01 E .11 < .20 E .1 E .10 E .04 < .20 < .5 < .002 < .74 < .09 E .2 E0.100 03/02/99 < .005 < .02 0.16 < .10 E .1 0.16 < .05 < .10 < .2 < .002 < .37 < .04 0.2 0.164 05/03/99 0.016 E .01 0.19 < .10 E .1 0.21 < .05 < .10 < .2 0.005 < .37 < .04 E .1 0.207 05/03/99 0.017 E .01 E .08 < .10 E .1 E .08 E .01 < .10 E .1 0.005 < .37 < .04 E .1 E0.078 07/12/99 0.013 M 0.22 E .05 0.2 0.27 E .01 E .01 < .2 < .002 < .37 E .03 E .1 E0.047 0.271

Note: Blanks mean sample was either non detected or not sampled Detected Organics from USGS Route 125 Study - Loveland Reservoir East End Near Source Inlet Site 2

Sample Datetime tert- Butyl- Sima- Prome- Chloro- Chloro- o m- and Acetone methyl zine, ton, Toluene Benzene form methane xylene p- ether water, water, water, water, water, xylene fltrd, fltrd, unfltrd unfltrd unfltrd ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 09/10/98 0.145 0.021 E0.003 E0.015 E0.029 09/10/98 0.006 E0.002 E0.024 E0.990 11/04/98 0.019 E0.004 E0.013 E0.012 11/04/99 0.01 01/07/99 0.013 E0.003 03/02/99 E0.166 E0.021 E0.010 E0.010 E0.018 05/04/99 E0.100 0.01 E0.015 E0.038 05/04/99 0.18 0.012 07/13/99 0.194 0.012 E0.034 E0.011 E0.036 E0.011 E0.016 Detected Organics from USGS Route 125 Study - Loveland Reservoir Near Dam Site Sample Datetime Chloro- Acetone tert- m- and Chloro- Sima- Prome- o Ethyl- Benzene form Butyl- p- methane Toluene zine, ton, xylene benzene water, methyl xylene water, water, water, water, water, unfltrd ether unfltrd fltrd, fltrd, fltrd, unfltrd ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 9/10/1998 E0.015 0.114 0.023 E0.003 9/10/1998 E0.030 0.006 E0.002 11/04/98 E0.019 E0.12 E0.013 0.023 E0.004 11/04/98 0.01 E0.004 01/07/99 E0.02 0.013 E0.003 03/02/99 E0.096 05/04/99 E0.115 E0.009 0.012 E0.004 05/04/99 0.014 07/13/99 E0.008 E0.015 E0.043 E0.040 E0.029 E0.013 0.011 E0.017 E0.01 07/13/99 E0.011 0.226 E0.053 0.01 09/21/99 E0.011 E0.017 E0.045 E0.006 0.011 09/21/99 0.181 E0.013 0.012 11/30/99 E0.18 E0.04 01/29/00 01/29/00 01/30/00 01/30/00 03/14/00 E0.01 E0.01 03/14/00 E0.03 06/13/00 E0.01 09/06/00 E0.01 E0.01 09/06/00 E0.01 12/04/00 03/21/01 E0.02 06/05/01 E0.01 E5.2 E0.02 E0.04 06/05/01 E0.05 09/06/01 E0.16 E0.01

Note: Blanks mean sample was either non detected or not sample Detected Organics from USGS Route 125 Study - Raw Imported Water at Sweetwater Reservoir

Sample 1,1,1- 1,1,2- Bromo- Di- Datetime Tri- Tri- dichloro- bromo- tert- chloro- chloromethane chloro- Butyl- Sima- Atrazine Bromacil Metola- Chloro- MTBE Dacthal Diazinon ethane ethane methane methyl zine, chor Toluene Phenol form ether water, water, water, water, fltrd, fltrd, unfltrd unfltrd ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 09/20/99 E0.033 0.060 0.355 1.132 0.008 0.004 0.005 E0.068 0.669 11/30/99 E0.01 E0.08 0.008 0.005 0.005 0.17 1.2 9/5/200 0.97 0.100 0.01 E0.01 0.35 0.2 03/20/01 0.220 E0.1 E0.006 E0.003 E0.047 E0.003 E0.03 E0.560 0.35 0.5 E0.001 E0.002 09/06/01 E0.09 0.170 E0.008 0.007 E0.006 0.31 1

Note: Blanks mean sample was either non detected or not sampled