Snow Canyon Well Field

Home , Snow Canyon State Park

DRINKING WATER SOURCE PROTECTION PLAN

For The

SNOW CANYON WELL FIELD

PREPARED FOR ST. GEORGE CITY WATER SYSTEM NO. 27015

August 2011

Prepared by:

Table of Contents

SOURCE PROTECTION PLAN

EXECUTIVE SUMMARY………………………………………………………...1

1.0 Introduction …..…………………………………………….…………………2

2.0 Delineation Report …..…………………………………………………….….3

3.0 Inventory of Potential Contamination sources ………………………………..10

4.0 Assessment of Potential Contamination source Hazards………………………14

5.0 Management Program for Existing Potential Contamination Sources ………..14

6.0 Management Program for Future Potential Contamination Sources ………….14

7.0 Implementation Schedule ……………………………………………………..14

8.0 Resource Evaluation …………………………………………………………..15

9.0 Recordkeeping …………………………………………………………………15

10.0 Contingency Plan …………………………………………………………….17

11.0 Public Notification ……………………………………………………………21

12.0 Waivers ………………………………………………………………………22

References

Drinking Water Source Protection Plan Snow Canyon Well Field i

APPENDICES

Appendix A Figures 1-5 Appendix B Well Logs Appendix C Consumer Confidence Report Laboratory Report – Certificate of Analysis Use Waiver Certification Statement Letter to Snow Canyon State Park

Drinking Water Source Protection Plan Snow Canyon Well Field ii

DRINKING WATER SOURCE PROTECTION PLAN

EXECUTIVE SUMMARY

Currently the City of St. George owns and operates 5 wells and Santa Clara City owns and operates 2 wells which are located within the Snow Canyon State Park with the surrounding lands being under the control of the Utah State Division of Parks and Recreation or BLM. Currently the protection zones for this well field are defined by the 2 mile radius delineation procedure. Since the 2 mile radius procedure is a more conservative approach and may encompass a larger source protection management area than may be required, the City of St. George has retained Alpha Engineering to determine and define the source protection zones using the preferred delineation procedure for the well field and prepare the Drinking Water Source Protection Plan (DWSPP) to reflect the findings of the procedure.

This report analyzes the well field, based on the existing data for the 7 wells. The results of the analysis shows that all zones for the St. George City wells are within the Snow Canyon State Park and BLM and the zones for Santa Clara City wells are within the Snow Canyon State Park, BLM and private ground owned by Diamond Valley Properties LLC. It was determined that there are currently no potential contamination sources within the well field. The City of St. George will continue correspondence with the State Parks and Recreation and BLM offices yearly to inform them of the municipal water sources and request assistance in ground water protection for these sources.

1.0 INTRODUCTION

1.1 SYSTEM INFORMATION

St. George City has retained Alpha Engineering to complete a Drinking Water Source Protection (DWSP) Plan for this portion of their public water system No 27015. The Delineation Report portion presents the source protection zone delineations for the Snow Canyon Well Field which consists of 7 wells (St. George City Wells #2, #3, #3A, #4, #5 and Santa Clara City Wells #1 and #2) The 7 wells will be referred to as the Snow Canyon Well Field throughout the report. This report has been prepared and is submitted to satisfy the Source Protection requirements in accordance with Section R309-600, latest revision October 29, 2003 for new wells and springs and being submitted for the St. George City Wells 2, 3, 3A, 4 and 5. It should be noted that the Santa Clara City wells have been included in the analysis because they influence the well field and should be considered for defining the delineation zones.

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Water System Name, Number and Address City of St. George Water System No. 27015 175 East 200 North St. George, UT. 84770 (435) 635-9442

1.2 SOURCE INFORMATION

This Drinking Water Source Protection Plan is being submitted for the Snow Canyon Well Field. The wells are located within the Snow Canyon State Park, approximately 6 miles northwest of the City of St. George, Utah, as indicated on Figure 1 in Appendix A. The locations of the wells are more specifically described in the following table.

TABLE 1 WELL LOCATIONS

Description Well Location St. George City Snow Canyon Well #2 S 711 ft. W 1429 ft. from N4 cor. Section 16 T41S R16 W St. George City Snow Canyon Well #3 N 1996 ft. W 2038 ft. from S4 cor. Section 9 T41S, R16W St. George City Snow Canyon Well #3A N 1996 ft. W 2038 ft. from S4 cor. Section 9 T41S, R16W St. George City Snow Canyon Well #4 N 4196 ft. W 1853 ft. from S4 cor. Section 9 T41S, R16W St. George City Snow Canyon Well #5 S 245 ft. E 420 ft. from S4 cor. Section 16 T41S, R16W Santa Clara City Snow Canyon Well #1 N 516 ft. E715 from SW cor. Section 4 T41S, R16W Santa Clara City Snow Canyon Well #2 N 1670 ft. E 540 ft. from SW cor. Section 4 T41S, R16W

1.3 DESIGNATED PERSON

In accordance with the State Rules, Section R309-600-5, the designated person in charge of the St. George City water system is:

Mr. Barry Barnum Water Services Department City of St. George 175 East 200 North St. George, Utah 84770

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435-627-4800 (office)

2.0 DELINEATION REPORT

This Delineation Report has been prepared to fulfill the requirements of Section R309-600-9, Delineation of Protection Zones and Management Areas, as required by the Drinking Water Source Protection Rule, revised October 29, 2003. The purpose of this report is to determine the source protection zones for the Snow Canyon Well Field. The wells are being treated as a wellfield in order to model potential interference from each other and to map the calculated delineation zones as required by the Drinking Water Source Protection Rule.

The State rules allow for two delineation procedures; one being the two-mile delineation and the second being the preferred delineation procedure. This report utilizes the preferred delineation procedure. The four zones identified in this procedure are:

Zone 1: The area located within a 100-foot radius of the wellhead Zone 2: The area located within a 250-day groundwater travel time to the wellhead. Zone 3: The area located within a 3-year groundwater travel time to the wellhead. Zone 4: The area located within a 15-year groundwater travel time to the wellhead.

Figure 4 in Appendix A shows the well location and delineation zones for each of the wells in this report.

2.1 GEOLOGIC DATA

STRATIGRAPHY Figure 2, (after Willis and Higgins, 1996) shows the geology of the Snow Canyon area. The area includes 5 wells owned by St. George City and 2 wells owned by Santa Clara City. Shallow alluvial, colluvial, and eolian deposits overlie the well sites. These deposits are generally less than 20 feet thick and consist largely of silty sand and fine to coarse grained sand deposits with occasional basalt/sandstone cobbles and boulders. The alluvial, colluvial, and eolian deposits are underlain by the Jurassic Age Navajo Sandstone. The Navajo Sandstone is massive, crossbedded, and fine to medium grained. Grains consist of frosted quartz poorly to moderately cemented with calcareous and siliceous cement. Where poorly cemented, the sandstone is quite friable. Moderate to highly jointed areas are common. Thick crossbed sets are prominent. The Navajo Sandstone is about 2,500 feet thick in the Snow Canyon area.

STRUCTURE The Snow Canyon area lies within the transitional zone between the Colorado Plateau and the Basin and Range physiographic Provinces. The Basin and Range province is characterized by east-west extensional tectonics that form long, straight, north-south trending mountain ranges

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with intervening basins. Normal faulting and widespread igneous activity during the Miocene (15 million years ago to present) were the dominant geologic processes. The transitional zone between the two provinces includes two major down-to-the-west normal faults (Hurricane and Gunlock-Grand Wash) that effect the transition from the Colorado Plateau to the Basin and Range. The area lies on the intermediate block created and bounded by the Hurricane fault zone on the east and the Gunlock-Grand Wash fault on the west. Strata west of the Gunlock-Grand Wash fault are complexly deformed, while strata to the east, including the Snow Canyon area, are only slightly deformed. The transition zone has also been influenced by Late Cretaceous compressional events that produced the Virgin anticline. Regional folding, faulting, and volcanics have all affected the area.

The most prominent structural features in the area are the numerous joints and factures within the Navajo Sandstone. Generally all competent strata are fractured, but the most prominent joints are in the massive sandstone beds. Willis and Higgins (1996) indicates that within the Snow Canyon area joints set are parallel, widely spaced, high-angle, with overall trends to the north and northeast. Some of these trends are several miles in length. These large, prominent joint patterns are shown by “lineament” symbols on Figure 2.

2.2 WELL CONSTRUCTION DATA

The Snow Canyon Wells are located within the Snow Canyon State Park as shown on Figure 1B in Appendix A. Well logs for all seven wells are included in Appendix B and the following tables summarize the well data.

TABLE 2 WELL DATA SUMMARY

St George Well St. George St. George St. George DESCRIPTION #2 Well #3 Well #3A Well # 4 Well Casing Diameter (inches) 16 16 16 16 Total Depth of Well (feet) 830 1,000 1,160 800 Well Screen & Perforation Not Slot (1/16” x 3”) SS 304 (0.30”) Type available Not available Depth and Length of Screen Not with Perforated Interval(s) 350’-830’ 360’-1160’ Not available available (feet) Grouted Length (feet) 0’ - 100’ 0’ – 100’ 0’ – 115’ 0’ – 100’ Welded Welded Steel Welded Steel Casing type Steel Not available

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St George Well St. George St. George St. George DESCRIPTION #2 Well #3 Well #3A Well # 4 Method of Well Construction Rotary Rotary Rotary Rotary Vertical Line Vertical Vertical Line Type of Pump Submersible Shaft Line Shaft Shaft Maximum Projected Pumping 500 300 600 900 Rate (gpm)

TABLE 2a WELL DATA SUMMARY CONTINUED

St George Santa Clara Santa Clara DESCRIPTION Well #5 Well #1 Well # 2 Well Casing Diameter (inches) 16 Not available 16 Total Depth of Well (feet) 620 Not available 1,050

Well Screen & Perforation SS (0.50”) Not available SS 304 Type Depth and Length of Screen with Perforated Interval(s) 200’-620’ Not available 490’ – 1050’ (feet) Grouted Length (feet) 0’ - 100’ Not available 0’ – 200’ Welded Not available Welded Steel Casing type Steel Method of Well Construction Rotary Not available Rotary Vertical Line Vertical Line Type of Pump Submersible Shaft Shaft Maximum Projected Pumping 300 1,000 1,275 Rate (gpm)

2.3 AQUIFER DATA

Transmissivity. Clyde (1987) shows typical transmissivity values for the Navajo Sandstone ranging from 2,400 to 5,300 ft2 /day. Cordova (1981) lists transmissivity values from the Navajo Sandstone ranging from 2,500 to 14,000 ft2 /day. Transmissivity values obtained by

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Psomas (verbal) for wells recently drilled near the Sand Hollow reservoir are on the order of 5,400 ft2 /day. Aquifer tests completed by Heilweil et.al (2000) within the Navajo aquifer ranged from 100 to 19,000 ft2 /day. A transmissivity value of 5,000 ft2/day is recommended unless well specific data is available.

Aquifer Thickness. The aquifer thickness or saturated thickness (b) is based on the estimated screened interval within the Navajo Sandstone. The screened interval is shown on four of the seven logs. The screened interval varies from 420 to 800 feet with an average of 537 feet. For the logs without a screened interval an average aquifer thickness of 500 feet was used. The average aquifer thickness of 537 feet was used for the analyses.

Hydraulic Conductivity. The hydraulic conductivity (K) was calculated from the mathematical relationship of K = T/b for an average value of 10 ft/day. For comparison Heilweil et. al (2000) recorded values from 0.3 to 32 feet/day. Clyde (1987) has a value of 5 feet per day for the Navajo Sandstone.

Groundwater Flow Direction and Hydraulic Gradient. The groundwater flow direction () as determined from Clyde (1987) parallels the Snow Canyon valley. A similar flow direction is presented in Hansen, Allen, & Luce’s 1997 study. The direction of groundwater flow is towards the confluence of the Santa Clara and Virgin Rivers. The flow direction used in the analysis is  = 255 (90o=due north and 270o = due south). The regional hydraulic gradient calculated from Clyde (1987) in the well vicinity is i=0.02 (300 feet in 2.75 miles). Hansen, Allen & Luce (1997) note a gradient of 0.005 for Navajo Sandstone in the Dammeron and Diamond Valley areas. A gradient of i=0.01 is recommended.

Porosity. Based on laboratory analyses, Clyde (1987) noted total porosity values ranging from 17 to 32 percent for the Navajo Sandstone. Cordova (1981) recorded porosity values ranging from 24 to 30%. An effective porosity value of 0.22 is recommended.

The aquifer parameters used in the analyses are included in Table 3.

TABLE 3 AQUIFER INFORMATION

Model Parameters Variable Units Value Transmissivity T ft2/day 5,000 Porosity N % 22 Hydraulic Gradient i ft/ft 0.01 Hydraulic Conductivity I ft/day 10 Direction of Ground-water Flow α degree 255 Aquifer Thickness B feet 537

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2.4 HYDROGEOLOGIC METHODS AND CALCULATIONS

The purpose of this portion of the DWSP plan is to determine the source protection zones for the well field. The State rules allow for two delineation procedures; one being the two mile delineation and the second being the preferred delineation procedure. This report utilizes the preferred delineation procedure.

The four zones identified in this procedure are:

Zone 1: The area located within a 100-foot radius of the wellhead. Zone 2: The area located within a 250-day groundwater travel time to the wellhead. Zone 3: The area located within a 3-year groundwater travel time to the wellhead. Zone 4: The area located within a 15-year groundwater travel time to the wellhead.

The computer module RESSQC of the “Wellhead Protection Areas Model” (WHPA) computer program developed by Blandford, Hayakorn and Wu of Hydrogeologic Inc. was used to determine the delineation zones. The WHPA code is a modular, semi-analytical model developed primarily for use as a delineation tool for wellhead protection areas. The program is valid for homogeneous aquifers with steady-state flow conditions and assumes that groundwater flow within the aquifer is uniform and behaves as in a porous medium.

The porous medium assumption is considered valid for the Navajo Sandstone because of: (1) the prominent jointing, (2) the persistent fracture pattern, (3) the massive crossbedding, and (4) the friable nature of poorly cemented intervals. The combination of these characteristics results in an interconnected mass, which emulates flow through a porous media.

The RESSQC Module was chosen for the analysis because of its ability to delineate time-related capture zones and also has the ability to model potential interference from others wells in the vicinity.

Movement through an aquifer is described by Darcy’s Law which is described by the following equation:

Q  KA dh / dx

Where Q is the flow, K is the conductivity of the material, A is the total cross section area including the space occupied by the porous material and dh/dx is the hydraulic gradient (i). A velocity of ground water flow is obtained by the relation that Q = vA. Solving for v and applying the fact that the material only flows through the pores of the material which is a function of the porosity (n):

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Ki v  n

The conductivity of the material is a function of the Transmissivity (T) by the relation:

T  Kb

WHPA utilizes analytical models based upon Darcy’s law. Input parameters required by WHPA include the aquifer type, aquifer thickness, transmissivity, porosity, regional hydraulic gradient and flow direction, boundary conditions, well location and its discharge rate. Most of the model parameters have been discussed in the previous sections and are summarized in Table 4.

TABLE 4 Parameter Values used in WHPA Model for Delineation of DWSP Zones

Model Parameters Unit Value Aquifer Type --- Confined St. George City # 2 – 96,257/ (500) St. George City # 3 - 115,508 / (600) St. George City # 3A – 115,508 / (600) Well Discharge Rate ft3/day / (gpm) St. George City # 4 – 173,262 / (900) St. George City # 5 – 57,754 / (300) Santa Clara City # 1 – 192,513 / (1000) Santa Clara City # 2 – 245,454 / (1,275) Well Casing Size feet 1.33 Transmissivity ft2/day 5,000 Porosity % 22 Hydraulic Gradient ft/ft 0.01 Hydraulic Conductivity ft/day 10 Angle of Ambient Flow degree 255 Aquifer Thickness feet 537

2.5 DELINEATION OF DRINKING WATER SOURCE PROTECTION ZONES

Figure 4 in Appendix A shows the extent of computed delineation zones two through four of the seven wells. Zone one, by definition, is a 100-foot radius circle around the well head. Tables 5 – 7

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describe the dimensions of protection zones two, three and four. Output from WHPA is received in graphical form and was scaled to be included in these tables.

TABLE 5 Dimension of 250-Day Delineation Zone 2

Maximum Radial Distance from the Well (ft) – using proposed maximum pumping rate Direction of St. George St. George St. St. George St. George Santa Clara Santa Clara Flow #2 #3 George #4 #5 #1 #2 #3A Upgradient 262’ 357’ 340’ 388’ 351’ 366’ 551’ Downgradient 269’ 190’ 293’ 341’ 269’ 319’ 279 Lateral Extent 551’ 639’ 654’ 711’ 588’ 773’ 852’

TABLE 6 Dimension of 3-Year Delineation Zone 3

Maximum Radial Distance from the Well (ft) – using proposed maximum pumping rate Direction of St. George St. George St. St. George St. George Santa Clara Santa Clara Flow #2 #3 George #4 #5 #1 #2 #3A Upgradient 744’ 908’ 811’ 805’ 613’ 850’ 1,461’ Downgradient 434’ 190’ 293’ 560’ 269’ 354’ 279’ Lateral Extent 1,106’ 1,300’ 1,403’ 1,672’ 870 1,868’ 1,713’

TABLE 7 Dimension of 15-Year Delineation Zone 4

Maximum Radial Distance from the Well (ft) – using proposed maximum pumping rate Direction of St. George St. George St. St. George St. George Santa Clara Santa Clara Flow #2 #3 George #4 #5 #1 #2 #3A Upgradient 2,644’ 3,404’ 2,848’ 2,444’ 2,400’ 4,005’ 4,759’ Downgradient 4,34’ 190’ 293’ 560’ 269’ 354’ 279’ Lateral Extent 1,817’ 2,080’ 2,446’ 4,856’ 1,309’ 4,844’ 3,063’

2.6 PROTECTED AQUIFER CLASSIFICATION

To be classified as a "protected aquifer" the following conditions must be met (R309-113-6(1)(v)):

1. A naturally protective layer of clay, at least 30 feet in thickness, is present above the aquifer; 2. The Public Water System (PWS) provides data to indicate the lateral continuity of the clay layer

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to the extent of zone two; and 3. The Public-supply well is grouted with a grout seal that extends from the ground surface down to at least 100 feet below the ground surface, and through the protective clay layer.

Data from the well logs indicates that all seven wells have a grouted length of at least 100 feet. However, a naturally protective layer of clay was not identified during drilling and is not expected to be present within the shallow alluvial, colluvial, and eolian deposits that overlie the well sites. The aquifer cannot be classified as a protected aquifer.

3.0 THE INVENTORY OF POTENTIAL CONTAMINATION SOURCES

In this section, the existing potential contamination sources (PCSs) located within each delineated DWSP zone are identified, prioritized according to risk, and shown on Figure 5, Appendix A Table 3.1 in Section 3.1 is used to assist in identification of potential contaminant sources. Table 3.2 is used to identify the hazard and the hazard type (ignitable, corrosive, explosive, toxic or radioactive) based on criteria at the bottom of each table. Section 3.3 describes the methodology of prioritizing the potential contamination source and presents a prioritized list of PCSs with contact information regarding each. A list of identified PCSs is contained in Section 3.4. This list includes:

 Description of PCS  Delineated zone where the source is located  Type of activity producing the potential contaminant(s)

3.1 POTENTIAL CONTAMINATION SOURCE LIST

Facilities and/or sites that usually involve activities with the potential to contaminate ground water are listed in Table 3.1. Table 3.1 was used as a guide to help identify potential sources of contamination.

A site visit consisting of a windshield survey and a site walk was conducted in June of 2011 to inventory potential contamination sources located within the delineated DWSP Zones. Attention focused on existing sources; however, sites for future potential contamination sources were also evaluated.

Based on the site visit and the analysis, it was noted that no sources of contamination as listed in Table 3.1 were identified in Zones 1 through 4 of the protection zones, for the St. George City wells (2, 3, 3A, 4, and 5), with the exception of an access road to the existing wells. Because this is a gravel based access road and used primarily for operation and maintenance of the wells, the roadway poses no oil or grease contamination threat to the well field.

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If, during subsequent evaluations, potential contamination sources are identified that are not listed on Table 3.1, the sources should be added to the list.

TABLE 3.1 POTENTIAL CONTAMINATION SOURCE LIST

1. Active and abandoned wells parks, and nurseries operations

2. Agricultural pesticide 19. Heating oil storage 33. Railroad yards herbicide, and fertilizer storage, 20. Industrial manufactures: 34. Research laboratories use, filling, and mixing areas Chemicals, pesticides, 35. Residential pesticide, 3. Airport maintenance and herbicides, paper and leather herbicide, and fertilizer storage, fueling sites products, textiles, rubber, use, filling, and mixing areas plastic, fiberglass, silicone glass, 4. Animal feeding operations (future) pharmaceutical, and electrical with more than ten animal units equipment etc. 36. Residential underground 5. Auto washes storage tanks 21. Industrial waste disposal/ 6. Beauty salons impoundment areas and 37. Salt and sand-salt piles 7. Boat builders and refinishers municipal Wastewater treatment 38. Sand and gravel mining plants, landfills, dumps, and operations 8. Chemical reclamation transfer stations facilities 39. School vehicle maintenance 22. Junk and salvage yards barns 9. Chemigation wells 23. Laundromats 40. Single-family septic 10. Concrete, asphalt, tar, and tank/drain-field systems coal companies 24. Machine shops, metal platers, heat treaters, smelters, 41. Sites of reported spills 11. Dry cleaners annealers, and descalers 42. Small engine repair shops 12. Farm dump sites 25. Manure piles 43. Storm water impoundment 13. Farm maintenance garages 26. Medical, dental, and sites and snow dumps 14. Feed lots veterinarian offices 44. Subdivision using 15. Food processors, meat 27. Mining operations subsurface wastewater disposal packers, and slaughter houses 28. Muffler shops systems (large and individual 16. Fuel and oil distributors and septic tank/drain-field systems) 29. Pesticide and herbicide storage storers and retailers 45. Submersible pumps used to 17. Furniture strippers, painters, pump wells 30. Photo processors finishers, and appliance repairers 46. Taxi cab maintenance 31. Print shops 18. Grave yards, golf courses, garage 32. Radiological mining

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47. Tire shops

48. Toxic chemical and oil pipelines

49. Vehicle chemical supply storers and retailers

50. Vehicle dealerships

51. Vehicle quick lubes

52. Vehicle rental shops

53. Vehicle repair, body shops, and rust proofers

54. Vehicle service stations and terminals

55. Wood preservers

56. Miscellaneous – Gravel Roadway

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POTENTIAL CONTAMINATION SOURCES

List of Potential Contamination Sources Snow Canyon Well Field (Wells 2, 3, 3A, 4, and 5)

Zone 1 Potential Source: None Contact Person: Barry Barnum Owner/Operator: St. George City Address/Location: 175 East 200 North Telephone: (435) 627-4800 St. George, Utah 84770 Zone 2 Potential Source: None Contact Person: Kristen Comella Owner/Operator: Snow Canyon State Park Address/Location: 1002 N. Snow Canyon Drive Telephone: 435-628-2255 Ivins, Utah 84738

Zone 3 Potential Source: None Contact Person: Kristen Comella Owner/Operator: Snow Canyon State Park Address/Location: 1002 N. Snow Canyon Drive Telephone: 435-628-2255 Ivins, Utah 84738

Zone 4 Potential Source: None Contact Person: Kristen Comella Owner/Operator: Snow Canyon State Park Address/Location: 1002 N. Snow Canyon Drive Telephone: 435-628-2255 Ivins, Utah 84738

In evaluating the Potential Contamination Sources within the defined delineation zones for the Snow Canyon Well Field, currently there are no PCS’s in zones 1-4. The roadway accessing the wells is a gravel based road and poses no oil or grease contaminant threat to the well field.

3.2 IDENTIFY HAZARDS

As indicated in Section 3.1, there are currently no PCSs within the delineation zones 1-4. Thus there are currently no existing hazards within the well field (wells 2, 3, 3A, 4 and 5).

3.3 PRIORITIZING POTENTIAL CONTAMINATION SOURCES

As indicated in Section 3.1, there are currently no PCSs within the delineation zones 1-4. Thus there

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are currently no existing hazards within the well field (wells 2, 3, 3A, 4 and 5).

3.4 POTENTIAL CONTAMINATION SOURCE LOCATION

As indicated in Section 3.1, there are currently no PCSs within the delineation zones 1-4. Thus there are currently no existing hazards within the well field (wells 2, 3, 3A, 4 and 5).

3.5 POTENTIAL CONTAMINATION SOURCES PLOTTED ON MAP

There are currently no Potential Contamination Sources within the delineation zones 1-4.

4.0 ASSESSMENT OF POTENTIAL CONTAMINATION SOURCE HAZARDS

There are currently no Potential Contamination Sources within the delineation zones 1-4.

5.0 MANAGEMENT PROGRAM FOR EXISTING POTENTIAL CONAMINATION SOURCES

There are currently no Potential Contamination Sources within the delineation zones 1-4.

6.0 MANAGEMENT PROGRAMS FOR FUTURE POTENTIAL CONTAMINATION SOURCES

The well field and protection zones are located within the State Park which does not use zoning ordinances. To prevent future contamination sources within the delineation zones, the City of St. George will initiate an annual inventory of the surface water protection zone to identify new hazards, which may have moved into the area. In addition, the City will continue communication with the State Parks and Recreation regarding assistance in watershed protection for the Snow Canyon Well Field. The letter included in appendix C will be sent to the Snow Canyon State Parks office.

7.0 IMPEMENTATION SCHEDULE

The land management strategies which have been identified by St. George City for both existing and future potential contamination sources along with a beginning implementation date for each one is listed below.

1. Strategy: Information letter Description: Communication with the State Parks Office informing them of the municipal source waters and requesting assistance in watershed

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protection for those sources. Implementation Date: July 2011

2. Strategy: Periodic Inspections of Area Description: Periodic inspection through visual observation of the wellhead protection zone will be conducted to verify that hazardous and harmful materials have been properly used, stored, or transported within the protection area.

Implementation Date: July of each year

8.0 RESOURCE EVALUATION

The Land Management strategies identified consist of information mailings and periodic inspections. Periodic inspections will be conducted by St. George City employees. Mailings will be paid for from funds obtained from current water users. Fee increases are neither required nor anticipated to implement identified strategies.

9.0 RECORD KEEPING

This section is included specifically for the operator of the Public Water System (PWS) to continuously update and document the changes that occur and to show the current conditions in the wellhead protection zones. As the plan is executed, the PWS must document the implementation of each land management strategy as it is implemented. This will include copies of any ordinances, codes, permits, memoranda of understanding, public education programs and letters, training session agendas, minutes of meetings, diary entries, memoranda for the file, letters, etc. relating to these wells and their wellhead protection area. File copies of all the above information at the end of the report.

NOTES:

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10.0 CONTINGENCY PLAN

Purpose: To identify potential threats to St. George City’s groundwater supply and development of procedures to be followed when such threats materialize.

Plan Objectives: To present a logical course of action that representatives of the City can implement during an emergency that impacts their culinary water supply. The contingency plan includes: 1. Emergency Response 2. Rationing 3. Remediation 4. Source Development Plans

Water System Overview: St. George City receives a portion of its culinary water from numerous wells located in Snow Canyon State Park. The wells owned and operated by St. George City are Snow Canyon Wells 2, 3, 3A, 4 and 5.

Potential Sources of Water Supply Contamination or Disruption:  Contamination of wells  Storage tank contamination  Breaks in major distribution lines  Prolonged drought

10.1 Emergency Response

Emergency response planning identifies short-term solutions to problems that may occur due to accidents or natural disasters. During an emergency or disaster, quality drinking water becomes one of the top priorities in emergency medical services, fire fighting, or sanitation. Emergency response includes (1) classifying the emergency, (2) emergency coordination, and (3) implementation of emergency response.

Classifying the Emergency Classifying the degree of the emergency or disaster will help in prioritizing activities and speeding response time to implement the response plan. In the case of St. George City, the classification of the emergency or disaster will be the decision of the System Operator. The current system operator lives within the service area and can provide immediate response as required. Emergencies will be classified as follows:

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LEVEL I – NORMAL (ROUTINE): St. George City personnel and available equipment can handle system problems.

LEVEL II – ALERT (MINOR EMERGENCY): St. George City personnel and available equipment can handle system problems; however, additional personnel should be put on alert to be made available if additional work is required.

LEVEL III – MAJOR EMERGENCY: Problems with the system are somewhat beyond the capabilities of the drinking water system personnel and equipment, and requires that the City be notified that a situation requiring emergency procedures exists.

LEVEL IV – DISASTER: Problems clearly and immediately are beyond the capability of the drinking water system. Recovery time will exceed one week, costs will be great, large amounts of assistance personnel and equipment will be required. The City is notified and emergency preparations are initiated.

Emergency Coordination Once the emergency is classified, coordination procedures will be enacted depending on the severity of the emergency. Coordination of emergency actions and required equipment will be accomplished through the System Manager. The System Manager will be assisted by other personnel from the City, and personnel and equipment from other City Departments

Emergency coordination is divided into two parts: Coordination of resources and coordination of public relations. The System Manager is responsible for resource coordination while a designated member of the board will be responsible for public relations, i.e. informing users of the situation and timeframe involved. The System Manager and public relations coordinator will be separate individuals so that the System Manager can concentrate on fixing problems while the public relations coordinator can alert and update users. Upon determination of the magnitude of the emergency the System Manager will coordinate activities based on the following:

 The damage as it relates to the overall system design  Drinking water and sanitation needs of the system users  Fire-fighting requirements  Amount of drinkable water remaining in the system reservoirs  Equipment and materials required to repair or replace the system  Finances available for system repair or emergency response.

Coordination of public relations includes:

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a. Issuing emergency information bulletins to the public. For St. George City this will be in the form of public service announcements over local radio and TV stations along with articles in the Spectrum News Paper. b. Inform the users of any possible contamination and subsequent boiling orders. c. Implementation of any drinking water rationing.

Implementation of Emergency Response

1. The System Manager evaluates the emergency and ensures that the City, and/or other designated personnel are aware, depending on the magnitude of the emergency.

2. The System Manager maintains a roster of personnel or companies, in addition to the materials and equipment that is owned by the City that can be used in case of an emergency. This roster includes personnel, material suppliers, and equipment suppliers. The roster with company names, addresses, phone numbers follows:  Scholzen Products Co. Inc. Hurricane, UT (435) 635-4441  Mountainland Supply Co. St. George, UT (435) 627-9510  Ahern Rental St. George, UT (435) 628-4100

3. Maintain an updated listing of contacts within the local and neighboring fire fighting and law enforcement agencies including phone numbers. Resource lists are also included. This list is as follows:  Ambulance (Dixie Ambulance) (435) 634-4303  Fire (St. George City Fire Dept.) (435) 627-4949 (Dispatch)  Police (435) 626-4301  Rural Water Association (Terry Smith) (801) 756-5123  Southwest Public Health (435) 673-3528

4. Maintain a current listing of equipment owned or available to the City. This list includes:  A backhoe and dump truck owned by the City  Extra fittings, values, piping, and pumps for system repair  Access to a generator during prolonged power outage

5. The System Manager has an updated map of the water system showing the locations of critical facilities, i.e. pumps, valves, water tanks, etc.

10.2 Rationing

The purpose of this Section is to establish a course of action to be implemented when water

Drinking Water Source Projection Plan 19 Snow Canyon Well Field

shortages occur. Shortages may be caused by drought, seasonal overuse, contamination, or accidents. 1. Establish what “action level” caused by a shortage will initiate the rationing plan, i.e., what is the critical point of water shortage that signals plan implementation. 2. What resources are available to deal with shortages, i.e., alternate supplies, emergency water equipment, technical assistance and communications. 3. Develop step-by-step procedure for implementing the conservation measures. 4. How media and consumers will be informed of the status of the emergency and implementation of the plan.

Action Level The “action level” is the point that will initiate the rationing plan. For St. George City, the action level will occur if there is a break in a transmission line from one of the wells and it is anticipated that line repair will exceed 24 hours or if the water level in the water storage tanks is below ¼ capacity during periods of heavy use.

Chain of Command The rationing plan will be initiated by the City Manager.

A designated City staff member will be responsible for notifying the public that the rationing plan has been implemented.

Available Resources Material resources available to deal with shortages includes: numerous wells and a water treatment plant Technical assistance can be obtained from St. George City, the Rural Water Association, Washington County Emergency Management, and Southwest Public Health.

Rationing Plan Procedures Step-by-step procedures for plan implementation are: 1. Determination that the “action level” has been reached. 2. Notification of users that water rationing is required. 3. Notification will inform users that the following conservation measures are required until further notice:  Alternating days for outdoor watering, or if critical, ceasing all outdoor watering  Conserving water by minimizing car washing, dishwashing, laundry washing, showering, etc  Use bottled water for drinking where available  Ceasing the use of culinary water for livestock watering, commercial use or industrial purposes

Monitoring and Public Information

Drinking Water Source Projection Plan 20 Snow Canyon Well Field

Monitoring of the rationing plan, particularly with regards to outdoor use will be performed by City staff. Public information with regards to the rationing effort and length will be coordinated by the public relations coordinator.

10.3 Decontamination plans

Two general methods of disinfecting small quantities of water in emergency situations include boiling (most positive way to make water bacteriologically safe to drink) and chemical treatment. Decontamination will consist of: 1. Boiling, vigorously boil one minute at sea level, longer at higher altitudes to kill disease- causing bacteria. Water aeration following boiling can improve the flat taste or allowing the water to stand for a few hours after boiling. 2. Chemical treatment: chlorine or iodine. Common household bleach contains a chlorine compound that will disinfect water. If the procedure is not written on the label, the percentage of available chlorine can be found on the label and used in the following tabulation:

Available chlorine* Drops per Quart of Clear Water** 1% 10 4-6% 2 7-10% 1  if strength is unknown, add 10 drops per quart to purify ** double amount for turbid and colored water.

Treated water should be mixed thoroughly and allowed to stand for 30 minutes. The water should have a slight chlorine odor. If not, repeat the dosage. If chlorine taste is too strong, allow the water to stand exposed to air for several hours or aerate by pouring it from one clean container to another.

11.0 PUBLIC NOTIFICATION

Every year the City of St. George updates and distributes the Consumer Confidence Report, which includes a section addressing the Source Protection of the City’s wells and springs. Attached in Appendix C is a copy of the City’s public notification sent to residents in their Consumer Confidence Report or included in billing statement. The City also maintains information concerning the protection of ground water on their web site.

Drinking Water Source Projection Plan 21 Snow Canyon Well Field

12.0 WAIVERS

It is our understanding that use and susceptibility waivers can be granted if pesticides or VOC’s are not disposed, stored, transported, or manufactured within zones one through three. Since there are no pesticides or VOCs disposed, stored, transported, or manufactured within the Snow Canyon Well Field, zones 1 through 3, this well field should qualify for a continued use waiver.

Included in the Appendix C is a letter addressed to Ms. Kate Johnson, from Mr. Barry Barnum regarding the monitoring waiver. Also included are 8 lab reports to support the waiver request.

Drinking Water Source Projection Plan 22 Snow Canyon Well Field

REFERENCES

Clyde, C.G., 1987, Groundwater Resources in the Virgin River Basin in Utah, Utah Division of Water Resources.

Cordova, R. M., 1981, Ground-Water Conditions in the Upper Virgin River and Kanab Creek Basins, Area, Utah, with Emphasis on the Navajo Sandstone, United States Geological Survey and Utah Department of Natural Resources, Technical Publication No. 70.

Hansen, Allen & Luce, 1997, Determination of Recommended Septic System Densities for Groundwater Quality Protection; Washington County Water Conservancy District and Cooperating Agencies.

Division of Drinking Water, 2000. Drinking Water Source Protection Rule R309-600 - Revised June 12, 2000. State of Utah Department of Environmental Quality. Salt Lake City, Utah.

Heilweil, V.M., Freethey, G.W., Stopl, B.J., Wilkowske, C.D., and Wilberg, D.E., 2000, Geohydrology and Numerical Simulation of Ground-Water Flow in the Central Virgin River Basin of Iron and Washington Counties, Utah; State of Utah Department of Natural Resources Technical Publication No. 116.

Willis, G.C. and Higgins, J.M., 1996, Interim Geologic Map of the Santa Clara Quadrangle, Washington County, Utah; Utah Geological Survey, Open-File Report 339.

Blandford, T.N., Huyakorn, P.S., Wu, Yu-Shu, 1993, “WHPA” Well Head Protection Area Delineation Code, version 2.2 Herndon, Virginia.

APPENDIX A

FIGURES

Figure 1A Location Map

Figure 1B Site Map

Figure 2 Geologic Map

Figure 3 Ground Water Contours Map

Figure 4 Delineation Zones

Figure 5 Ownership Map

S:\sdskproj\041-104 SNOW CANYON DELINEATION\041-104-SNOW CANYON DELINEATION.dwg, LOCATION MAP FIG. 1A, 8/1/2011 9:17:10 AM, sbone

SR-18 WINCHESTER HILLS FILE SHEET DATE NAME SCALE PROJECT #

FIGURE 1A TITLE NO. DATE BY DESCRIPTION 1" = 2000' (11x17) REVISIONS JUNE 22, 2011

041-104 LOCATION MAP JSB

PROJECT SNOW CANYON WELLS 43 SOUTH 100 EAST, ST. GEORGE, UT. 84770 1 TEL: 435-628-6500 FAX: 435-628-6553 OF

5 ST. GEORGE CITY, UTAH S:\sdskproj\041-104 SNOW CANYON DELINEATION\041-104-SNOW CANYON DELINEATION.dwg, SITE MAP FIG. 1B, 8/1/2011 9:55:50 AM, sbone

SNOW CANYON STATE PARK

SR-18 WINCHESTER HILLS DIAMOND VALLEY FILE SHEET DATE NAME SCALE PROJECT #

FIGURE 1B TITLE NO. DATE BY DESCRIPTION 1" = 2000' (11x17) REVISIONS JUNE 22, 2011

041-104 SITE MAP JSB

PROJECT SNOW CANYON WELLS 43 SOUTH 100 EAST, ST. GEORGE, UT. 84770 2 TEL: 435-628-6500 FAX: 435-628-6553 OF

5 ST. GEORGE CITY, UTAH

S:\sdskproj\041-104 SNOW CANYON DELINEATION\041-104-SNOW CANYON DELINEATION.dwg, DELINEATION ZONES FIG. 4, 8/1/2011 9:55:10 AM, sbone

SNOW CANYON STATE PARK

SR-18 WINCHESTER HILLS DIAMOND VALLEY FILE SHEET DATE NAME SCALE PROJECT # TITLE NO. DATE BY DESCRIPTION FIGURE 4 1" = 2000' (11x17) REVISIONS JUNE 22, 2011

041-104 DELINEATION ZONES JSB

PROJECT SNOW CANYON WELLS 43 SOUTH 100 EAST, ST. GEORGE, UT. 84770 4 TEL: 435-628-6500 FAX: 435-628-6553 OF

5 ST. GEORGE CITY, UTAH S:\sdskproj\041-104 SNOW CANYON DELINEATION\041-104-SNOW CANYON DELINEATION.dwg, DELINEATION ZONES FIG. 5, 8/1/2011 9:38:39 AM, sbone

SNOW CANYON STATE PARK

SR-18 WINCHESTER HILLS DIAMOND VALLEY FILE SHEET DATE NAME SCALE PROJECT # TITLE NO. DATE BY DESCRIPTION FIGURE 5 1" = 2000' (11x17) REVISIONS JUNE 23, 2011

041-104 PROPERTY OWNERSHIP EXHIBIT SPW

PROJECT SNOW CANYON WELLS 43 SOUTH 100 EAST, ST. GEORGE, UT. 84770 5 TEL: 435-628-6500 FAX: 435-628-6553 OF

5 ST. GEORGE CITY, UTAH

APPENDIX B

WELL LOG DATA

Well Logs

APPENDIX C

MISCELLANEOUS DATA

Consumer Confidence Report

Laboratory Report – Certificate of Analysis

Use Waiver Certification Statement

Letter to Snow Canyon State Park

Chemtech-Ford Laboratories Serving the Intermountain West since 1953 6100 South Stratler Murray, UT 84107 Phone: 801-262-7299 Fax: 801-262-7378

Date: 12/28/07

St. George City Water Department attn: Jamie Carpenter 500 E. Skyline Drive St. George, UT 84770

This is the final report for project: 87599 Individual pages or sections of this report may not be separated when using the information for regulatory compliance.

The analyses presented on this report were performed in accordance with National Environmental Laboratory Accreditation Program (NELAP), Section 5.13.

Please feel free to contact us at (801) 262-7299 or (801) 262-7378 (fax) if you have questions or comments regarding this report. Our web site is located at www.chemtechford.com.

Dave Gayer Linda Daniels Laboratory Director Customer Representative [email protected] [email protected]

Approved By: Dave Gayer, Laboratory Director

Page 1 of 4 Chemtech-Ford Laboratories Certificate of Analysis

Lab No.: 07 13418 Lab Group No.: 87599

Name: St. George City Water Department Sample Date: 11/19/2007 8:55 AM Sample Site: Gunlock Wells Receipt Date: 11/20/2007 12:00 PM Sample ID: 07 13418 Sampler: JAMIE System No: 27015 Sample Source: Sample Type: Drinking Water Project:

Parameter Sample Mimimum Units Method Analysis Analysis Analyst Flag Result Reporting Date Time Initials Limit Group E - Radiochemicals Radium 228 0.7 pCi/L EPA 904.0 12/17/200710:52 UL O Radium 228 LLD 1.0 pCi/L EPA 904.0 12/17/200710:52 UL O Radium 228 Variance 0.4 pCi/L EPA 904.0 12/17/200710:52 UL O

Abbreviations ND = Not detected at the corresponding Minimum Reporting Limit. 1 mg/L = one milligram per liter = 1 part per million. 1 ug/L = one microgram per liter = 1 part per billion.

Flag Descriptions APH = The test was performed past the EPA specified holding time. H = A high bias is suspected. I = The analysis experienced a matrix interference which may have affected the results. J = The result is positive and estimated. The result falls between the Minimum Reporting Limit and the Method Detection Limit. L = A low bias is suspected. O = The analysis was performed by an outside contract laboratory. R = The value represents a reanalysis. SPH = The sample was submitted for analysis past the EPA specified holding time.

6100 South Stratler Murray, UT 84107 801-262-7299 Office Page 2 of 4 801-262-7378 Fax Chemtech-Ford Laboratories Certificate of Analysis

Lab No.: 07 13419 Lab Group No.: 87599

Name: St. George City Water Department Sample Date: 11/19/2007 9:20 AM Sample Site: Snow Canyon Wells Receipt Date: 11/20/2007 12:00 PM Sample ID: 07 13419 Sampler: JAMIE System No: 27015 Sample Source: Sample Type: Drinking Water Project:

Parameter Sample Mimimum Units Method Analysis Analysis Analyst Flag Result Reporting Date Time Initials Limit Group E - Radiochemicals Radium 228 0.9 pCi/L EPA 904.0 12/17/200710:52 UL O Radium 228 LLD 1.0 pCi/L EPA 904.0 12/17/200710:52 UL O Radium 228 Variance 0.5 pCi/L EPA 904.0 12/17/200710:52 UL O

Abbreviations ND = Not detected at the corresponding Minimum Reporting Limit. 1 mg/L = one milligram per liter = 1 part per million. 1 ug/L = one microgram per liter = 1 part per billion.

6100 South Stratler Murray, UT 84107 801-262-7299 Office Page 3 of 4 801-262-7378 Fax Chemtech-Ford Laboratories Certificate of Analysis

Lab No.: 07 13420 Lab Group No.: 87599

Name: St. George City Water Department Sample Date: 11/19/2007 8:30 AM Sample Site: West City Springs Receipt Date: 11/20/2007 12:00 PM Sample ID: 07 13420 Sampler: JAMIE System No: 27015 Sample Source: Sample Type: Drinking Water Project:

Parameter Sample Mimimum Units Method Analysis Analysis Analyst Flag Result Reporting Date Time Initials Limit Group E - Radiochemicals Radium 228 0.5 pCi/L EPA 904.0 12/17/200710:52 UL O Radium 228 LLD 1.0 pCi/L EPA 904.0 12/17/200710:52 UL O Radium 228 Variance 0.5 pCi/L EPA 904.0 12/17/200710:52 UL O

Abbreviations ND = Not detected at the corresponding Minimum Reporting Limit. 1 mg/L = one milligram per liter = 1 part per million. 1 ug/L = one microgram per liter = 1 part per billion.

6100 South Stratler Murray, UT 84107 801-262-7299 Office Page 4 of 4 801-262-7378 Fax

Chemtech-Ford Laboratories Serving the Intermountain West since 1953 6100 South Stratler Murray, UT 84107 Phone: 801-262-7299 Fax: 801-262-7378

Date: 01/14/09

St. George City Water Department attn: Shari McTiver 500 E. Skyline Drive St. George, UT 84770

This is the final report for project: 94623 Individual pages or sections of this report may not be separated when using the information for regulatory compliance.

The analyses presented on this report were performed in accordance with National Environmental Laboratory Accreditation Program (NELAP), Section 5.13.

Please feel free to contact us at (801) 262-7299 or (801) 262-7378 (fax) if you have questions or comments regarding this report. Our web site is located at www.chemtechford.com.

Dave Gayer Linda Daniels Laboratory Director Customer Representative [email protected] [email protected]

Approved By: Dave Gayer, Laboratory Director

Page 1 of 7 Chemtech-Ford Laboratories Certificate of Analysis

Lab No.: 08 16981 Lab Group No.: 94623

Name: St. George City Water Department Sample Date: 12/3/2008 11:00 AM Sample Site: West City Springs Receipt Date: 12/4/2008 12:00 PM Sample ID: 08 16981 Sampler: S MCTIVER System No: 27015 Sample Source: Sample Type: Drinking Water Project: Compl Sampling DW

Parameter Sample Mimimum Units Method Analysis Analysis Analyst Flag Result Reporting Date Time Initials Limit Group E - Radiochemicals Radium 228 0.7 pCi/L EPA 904.0 1/6/20099:56 UL O Radium 228 LLD 1.0 pCi/L EPA 904.0 1/6/20099:56 UL O Radium 228 Variance 0.4 pCi/L EPA 904.0 1/6/20099:56 UL O Group F - Carbamates 3-HydroxycarbofuranND 2 ug/L EPA 531.1 12/8/2008 9:21 RB Aldicarb ND 1 ug/L EPA 531.1 12/8/2008 9:21 RB Aldicarb sulfoneND 2 ug/L EPA 531.1 12/8/2008 9:21 RB Aldicarb sulfoxideND 2 ug/L EPA 531.1 12/8/2008 9:21 RB Carbaryl ND 2 ug/L EPA 531.1 12/8/2008 9:21 RB Carbofuran ND 2 ug/L EPA 531.1 12/8/2008 9:21 RB Methomyl ND 1 ug/L EPA 531.1 12/8/2008 9:21 RB Oxamyl (Vydate)ND 2 ug/L EPA 531.1 12/8/2008 9:21 RB Group J - Herbicides 2,4,5-TP (Silvex)ND 0.44 ug/L EPA 515.2 12/18/2008 10:45 RJ 2,4-D ND 0.22 ug/L EPA 515.2 12/18/2008 10:45 RJ Dalapon ND 2.2 ug/L EPA 515.2 12/18/2008 10:45 RJ Dicamba ND 1 ug/L EPA 515.2 12/18/2008 10:45 RJ Dinoseb ND 0.44 ug/L EPA 515.2 12/18/2008 10:45 RJ PentachlorophenolND 0.088 ug/L EPA 515.2 12/18/2008 10:45 RJ Picloram ND 0.22 ug/L EPA 515.2 12/18/2008 10:45 RJ Group K - PCB's PCB-1221 ND 0.2 ug/L EPA 508.1 12/15/2008 13:23 RJ PCB-1232 ND 0.2 ug/L EPA 508.1 12/15/2008 13:23 RJ PCB-1242 ND 0.5 ug/L EPA 508.1 12/15/2008 13:23 RJ PCB-1248 ND 0.5 ug/L EPA 508.1 12/15/2008 13:23 RJ PCB-1254 ND 0.5 ug/L EPA 508.1 12/15/2008 13:23 RJ PCB-1260 ND 0.5 ug/L EPA 508.1 12/15/2008 13:23 RJ Group L - Pesticides Endrin ND 0.022 ug/L EPA 508.1 12/15/2008 13:23 RJ HeptachlorND 0.088 ug/L EPA 508.1 12/15/2008 13:23 RJ Heptachlor EpoxideND 0.044 ug/L EPA 508.1 12/15/2008 13:23 RJ

6100 South Stratler Murray, UT 84107 801-262-7299 Office Page 2 of 7 801-262-7378 Fax Chemtech-Ford Laboratories Certificate of Analysis

Lab No.: 08 16981 Lab Group No.: 94623

Parameter Sample Mimimum Units Method Analysis Analysis Analyst Flag Result Reporting Date Time Initials Limit Group L - Pesticides Lindane ND 0.044 ug/L EPA 508.1 12/15/2008 13:23 RJ MethoxychlorND 0.22 ug/L EPA 508.1 12/15/2008 13:23 RJ ToxapheneND 2.2 ug/L EPA 508.1 12/15/2008 13:23 RJ Group N - Semi-Volatile Compounds a-ChlordaneND 0.44 ug/L EPA 525.2 12/10/2008 11:27 MAH Alachlor ND 0.44 ug/L EPA 525.2 12/10/2008 11:27 MAH Aldrin ND 2 ug/L EPA 525.2 12/10/2008 11:27 MAH Atrazine ND 0.22 ug/L EPA 525.2 12/10/2008 11:27 MAH Benzo (a) pyreneND 0.044 ug/L EPA 525.2 12/10/2008 11:27 MAH bis (2-Ethylhexyl) adipateND 1.3 ug/L EPA 525.2 12/10/2008 11:27 MAH bis (2-Ethylhexyl) phthalateND 1.3 ug/L EPA 525.2 12/10/2008 11:27 MAH Butachlor ND 0.5 ug/L EPA 525.2 12/10/2008 11:27 MAH Dieldrin ND 1 ug/L EPA 525.2 12/10/2008 11:27 MAH g-ChlordaneND 0.44 ug/L EPA 525.2 12/10/2008 11:27 MAH HexachlorobenzeneND 0.22 ug/L EPA 525.2 12/10/2008 11:27 MAH HexachlorocyclopentadieneND 0.22 ug/L EPA 525.2 12/10/2008 11:27 MAH MetolachlorND 0.5 ug/L EPA 525.2 12/10/2008 11:27 MAH Metribuzin ND 0.5 ug/L EPA 525.2 12/10/2008 11:27 MAH PropachlorND 0.5 ug/L EPA 525.2 12/10/2008 11:27 MAH Simazine ND 0.15 ug/L EPA 525.2 12/10/2008 11:27 MAH

6100 South Stratler Murray, UT 84107 801-262-7299 Office Page 3 of 7 801-262-7378 Fax Chemtech-Ford Laboratories Certificate of Analysis

Lab No.: 08 16981 Lab Group No.: 94623

Parameter Sample Mimimum Units Method Analysis Analysis Analyst Flag Result Reporting Date Time Initials Limit

Abbreviations ND = Not detected at the corresponding Minimum Reporting Limit. 1 mg/L = one milligram per liter = 1 part per million. 1 ug/L = one microgram per liter = 1 part per billion.

6100 South Stratler Murray, UT 84107 801-262-7299 Office Page 4 of 7 801-262-7378 Fax Chemtech-Ford Laboratories Certificate of Analysis

Lab No.: 08 16982 Lab Group No.: 94623

Name: St. George City Water Department Sample Date: 12/3/2008 12:15 PM Sample Site: Snow Canyon Receipt Date: 12/4/2008 12:00 PM Sample ID: 08 16982 Sampler: S MCTIVER System No: 27015 Sample Source: Sample Type: Drinking Water Project: Compl Sampling DW

Parameter Sample Mimimum Units Method Analysis Analysis Analyst Flag Result Reporting Date Time Initials Limit Group E - Radiochemicals Radium 228 0.8 pCi/L EPA 904.0 1/6/20099:56 UL O Radium 228 LLD 1.0 pCi/L EPA 904.0 1/6/20099:56 UL O Radium 228 Variance 0.4 pCi/L EPA 904.0 1/6/20099:56 UL O Group F - Carbamates 3-HydroxycarbofuranND 2 ug/L EPA 531.1 12/8/2008 9:21 RB Aldicarb ND 1 ug/L EPA 531.1 12/8/2008 9:21 RB Aldicarb sulfoneND 2 ug/L EPA 531.1 12/8/2008 9:21 RB Aldicarb sulfoxideND 2 ug/L EPA 531.1 12/8/2008 9:21 RB Carbaryl ND 2 ug/L EPA 531.1 12/8/2008 9:21 RB Carbofuran ND 2 ug/L EPA 531.1 12/8/2008 9:21 RB Methomyl ND 1 ug/L EPA 531.1 12/8/2008 9:21 RB Oxamyl (Vydate)ND 2 ug/L EPA 531.1 12/8/2008 9:21 RB Group J - Herbicides 2,4,5-TP (Silvex)ND 0.44 ug/L EPA 515.2 12/18/2008 10:45 RJ 2,4-D ND 0.22 ug/L EPA 515.2 12/18/2008 10:45 RJ Dalapon ND 2.2 ug/L EPA 515.2 12/18/2008 10:45 RJ Dicamba ND 1 ug/L EPA 515.2 12/18/2008 10:45 RJ Dinoseb ND 0.44 ug/L EPA 515.2 12/18/2008 10:45 RJ PentachlorophenolND 0.088 ug/L EPA 515.2 12/18/2008 10:45 RJ Picloram ND 0.22 ug/L EPA 515.2 12/18/2008 10:45 RJ Group K - PCB's PCB-1221 ND 0.2 ug/L EPA 508.1 12/15/2008 13:23 RJ PCB-1232 ND 0.2 ug/L EPA 508.1 12/15/2008 13:23 RJ PCB-1242 ND 0.5 ug/L EPA 508.1 12/15/2008 13:23 RJ PCB-1248 ND 0.5 ug/L EPA 508.1 12/15/2008 13:23 RJ PCB-1254 ND 0.5 ug/L EPA 508.1 12/15/2008 13:23 RJ PCB-1260 ND 0.5 ug/L EPA 508.1 12/15/2008 13:23 RJ Group L - Pesticides Endrin ND 0.022 ug/L EPA 508.1 12/15/2008 13:23 RJ HeptachlorND 0.088 ug/L EPA 508.1 12/15/2008 13:23 RJ Heptachlor EpoxideND 0.044 ug/L EPA 508.1 12/15/2008 13:23 RJ

6100 South Stratler Murray, UT 84107 801-262-7299 Office Page 5 of 7 801-262-7378 Fax Chemtech-Ford Laboratories Certificate of Analysis

Lab No.: 08 16982 Lab Group No.: 94623

6100 South Stratler Murray, UT 84107 801-262-7299 Office Page 6 of 7 801-262-7378 Fax Chemtech-Ford Laboratories Certificate of Analysis

Lab No.: 08 16982 Lab Group No.: 94623

Parameter Sample Mimimum Units Method Analysis Analysis Analyst Flag Result Reporting Date Time Initials Limit

Abbreviations ND = Not detected at the corresponding Minimum Reporting Limit. 1 mg/L = one milligram per liter = 1 part per million. 1 ug/L = one microgram per liter = 1 part per billion.

6100 South Stratler Murray, UT 84107 801-262-7299 Office Page 7 of 7 801-262-7378 Fax