WATER TREATMENT SYSTEM, OPERABLE UNIT ONE DUBLIN TCE SITE BUCKS COUNTY, PENNSYLVANIA Work Assignment No

FINAL DESIGN DOCUMENTS: WATER TREATMENT SYSTEM, OPERABLE UNIT ONE DUBLIN TCE SITE BUCKS COUNTY, PENNSYLVANIA Work Assignment No. 90-47-3NS3 Contract No. 68-W8-0090 March 1995

Prepared for U.S. Environmental Protection Agency Region III 841 Chestnut Street Philadelphia, Pennsylvania 19107

Prepared by

CH2M HILL Reston, Virginia

WDCR846/024.WP5 ' n SRGGOQO Preface

This report contains the following design documents:

• Engineer's Report • Design Plans (bound under separate cover) • Design Specifications

WDCR848/023.WP5

flftOOOOO:2 ;,g|ft^^: •

• "•'>•',?':"-"'l. • '

' " ENGINEER'S REPORT

Final

Water Treatment System Operable Unit One Dublin TCE Site

Bucks County Pennsylvania

Prepared for the U.S. Environmental Protection Agency Region HI ..V-, -, 841 Chestnut Street % - ; Philadelphia, Pennsylvania 19107

Prepared by OMH'ILL Reston, Virginia

March 1995

WDCR846/025.WP5/1 AR000003 This design document has been prepared under the direction of a Registered Professional Engineer.

WDCR846/025.WP5/2 1ROOOOOI* CONTENTS

Section Page Acronyms and Abbreviations 1.0 Introduction ...... 1-1 2.0 Site Background ...... 2-1 3.0 Existing Municipal Water Supply System ...... 3-1 3.1 Overview ...... 3-1 3.2 Water Supply Wells and Well Houses ...... 3-1 3.2.1 Well Pumps ...... 3-1 3.2.2 Disinfection Facilities ...... 3-3 3.2.3 Well Houses ...... 3-3 3.3 Distribution Network: Existing and Proposed ...... 3-3 3.4 Elevated Tank Reservoir ...... 3-5 4.0 Design Criteria ...... 4-1 4.1 Overview ...... 4-1 4.2 Design Codes and Standards ...... 4-1 4.2.1 Federal Codes ...... 4-1 4.2.2 Pennsylvania and Bucks County Codes ...... 4-1 4.2.3 Dublin Borough Codes ...... 4-2 4.3 Design Water Demands ...... 4-2 4.3.1 Supply Well and Treatment Facility Flow Demands ...... 4-2 4.3.2 Distribution System Flow and Pressure Demands ...... 4-7 4.3.3 Storage Demands ...... 4-9 4.3.4 Sewerage Demands ...... 4-9 4.3.5 Provisions for Future Water Demands ...... 4-9 4.4 Design Water Quality Criteria ...... 4-10 4.4.1 Summary of Water Quality Standards and Results ...... 4-10 4.4.2 Volatile Organic Compounds ...... :...... 4-10 4.4.3 Manganese ...... 4-10 4.4.4 Other Water-Quality Parameters ...... 4-10 5.0 Proposed Facility Description ...... 5-1 5.1 Process Overview ...... 5-1 5.2 Supply Well ...... 5-1 5.2.1 Site Selection ...... 5-1 5.2.2 Source "Exploration ...... 5-3

SR000005 CONTENTS (continued)

Section Page

5.2.3 Sources of Contamination ...... 5-4 5.2.4 Well Retrofitting ...... 5- 5.3 Piping and Appurtenances ...... 5 5.4 Manganese Sequestering System ...... 5-< 5.5 Multi-Staged Diffused Air Stripper ...... 5-7 5.6 Off-Gas Treatment System ...... 5-8 5.7 Effluent Tank and Booster Pump ...... 5-8 5.8 Chlorination System ...... 5-9 5.9 Autodialer Alarm System ...... 5-10 5.10 Building and Site Features ...... 5-10 5.10.1 Building Layout ...... 5-10 5.10.2 Heating and Ventilation ...... 5-1.0 5.10.3 Site Layout ...... 5-11 5.10.4 Site Utilities ...... 5-11 5.10.5 Noise Abatement ...... 5-11 5.11 Operational Tie-in to the Borough's Existing System ...... 5-13 5.12 Emergency Provisions ...... 5-13 5.13 Operation and Maintenance ...... 5-14 5.14 Facility Startup ...... 5-14 5.15 Operator Training ...... 5-14 5.16 Treatment System Monitoring ...... 5-15 5.17 Drought Contingency Plan ...... 5-15 5.18 Water Conservation Measures ...... 5-15 6.0 Proposed House Connections, Carbon Filter Removal, and Well Abandonment ...... 6-1 6.1 Installation of House Connections ...... ".... 6-1 6.2 Removal and Disposal of Carbon Filters ...... 6-3 6.3 Abandonment of Private Wells ...... 6-15 7.0 Construction Cost Estimate ...... 7-1 8.0 Construction Schedule ...... 8-1 References Appendix A Laboratory Analytical Data, Water Quality Samples Appendix B Diffused Air Stripper References and Performance Data Appendix C Treatment System Monitoring Plan Appendix D Treatment System Quality Assurance Project Plan Appendix E Borough of Dublin Drought Emergency Plan Appendix F Borough of Dublin Water Use Regulations and Conservation Measures CONTENTS (continued)

Figures Page 2-1 Site Location Map ...... 2-2 2-2 Site Map ...... 2-3 3-1 Existing and Proposed Water Distribution System ...... 3-2 5-1 Process Flow Diagram ...... 5-2

6-1 Affected and Potentially Affected Properties for OU-1 Remedial Action ...... 6-2 8-1 Construction Schedule (EPA Region III and PaDER Waste Management Only) ...... 8-2

Tables 3-1 Existing Water-Supply Wells, Pumps, and Disinfection Equipment ...... 3-4 3-2 Existing Distribution-System Reservoir ...... 3-6 4-1 Affected or Potentially Affected Residences and Businesses ...... :,...... ; 4-3 4-2 Summary of Design Water Demands ...... ; 4-7 4-3 Analysis of Distribution Network ...... 4-8 4-4 PaDER New Source Sampling and Testing Requirements for Community Water Systems—Groundwater Sources ...... 4-11 4-5 Summary of Groundwater Sampling Results, Proposed Supply Well ...... 4-15 5-1 Specifications for the Supply Well and Pump ...... 5-5 5-2 Electrical Requirements ...... 5-12 6-1 Water Service Connection Data Summary ...... 6-4 6-2 Carbon Filter Data Summary ...... 6-10 6-3 Residential Supply Well Abandonment Data Summary ...... 6-16 7-1 Construction Cost Estimate (EPA Region III and PaDER Waste Management Only) ...... 7-2

WDCR846/012.WP5

flROOOOO? List of Acronyms and Abbreviations

• ARAR applicable or relevant and appropriate requirements

ARCS Alternative Remedial Contracting Strategy

BCDH Bucks County Department of Health CERCLA Comprehensive Environmental Response, Compensation, and Liability Act DRBC Delaware River Basin Commission EPA United States Environmental Protection Agency FFS focused feasibility study

MCL maximum contaminant level

NPL National Priorities List

PaDER Pennsylvania Department of Environmental Resources PCE tetrachloroethylene

PRP potentially responsible party PVC polyvinyl chloride

RI/FS remedial investigation and feasibility study

ROD record of decision RPM remedial project manager SOW statement of work TCA 1,1,1 trichloroethane TCE • trichloroethylene USGS United States Geological Survey VOC volatile organic compound

WDCR846/026.WP5 AROG.GGQ8 Section 1.0 Introduction

This report presents the design for the public water-supply well and treatment system part of the selected remedy for Operable Unit 1 (OU-1) of the Dublin TCE Superfund Site (the Site) in Dublin, Pennsylvania. OU-1 is one of the two operable units at the site. The primary objective of OU-1 is to provide a permanent supply of clean drinking water for approximately 70 residential and commercial properties whose private wells are contaminated, or may become contaminated, by trichloroethylene (TCE) migrating from the Site. OU-2 is a potentially responsible-party (PRP)-led operable unit focusing on remediating groundwater, surface water, and soil at the Site. The major components of the selected remedy for OU-1, as outlined in the record of decision (ROD) prepared by the U.S. Environmental Protection Agency (EPA-) and dated December 30, 1991, are the following:

1. Extending Dublin Borough's public water system to connect the affected parties to the system.

2. Developing, constructing, and operating a new public water-supply well within the plume of TCE contamination or converting an existing well within the plume of contamination to a public water-supply well and incorporating the well into the existing Dublin Borough municipal water-supply system to supplement the Borough's existing capacity at a rate equal to the average demands of the affected residences and businesses. 3. Constructing and operating an air-stripping system for treating groundwater extracted from the proposed supply well and treating the vapor emissions using vapor-phase carbon or another feasible technology.

4. Hooking up each of the affected residences and businesses to the public water system. . •

5. Removing existing carbon adsorption units or discontinuing bottled-water service to the affected residences and businesses and disposing of the carbon in accordance with federal and state regulations.

6. Abandoning the private wells of residences and businesses that are or will be within the plume of contamination or implementing institutional controls on the development and use of the wells.

7. Until a final groundwater remedy is implemented, monitoring residential and commercial wells not connected to the municipal water system that have the potential to become contaminated.

AR000009 The chosen remedial alternative was generated and selected over six other alternatives through an exhaustive feasibility-study process conducted by EPA with input by the Pennsylvania Department of Environmental Resources (PaDER) and the public. Other remedial alternatives which were evaluated and dismissed for various reasons include:

• Continued use of activated carbon treatment on individual private wells

• Expansion of the Borough system with increased pumping of the existing Borough wells

• Expansion of the Borough system with the development of a new public- supply well outside the plume of TCE contamination The design of the selected remedy for OU-1 is being performed in two phases. The first phase addresses the extension of the water-distribution system and the water-service laterals to each of the affected residences and businesses (item 1 above). The design for the first phase has been completed by the U.S. Bureau of Reclamation and is currently under construction. This report presents the design documents for the second phase of the selected remedy, which addresses items 2 through 7 above. The design documents provide information needed to 'obtain permits and approvals for the construction and implementation of the second phase of the remedy. The documents consist of:

• Engineer's Report • Design Drawings

• Design Specifications

• Reference Drawings • PaDER public water supply permit application and modules • Delaware River Basin Commission application for a well project in a "Groundwater Protected Area"

• Hydrogeologic report of the proposed supply well (previously submitted January 1994)

The design documents presented here do not constitute the complete contract documents. The anticipation is that the design documents would be incorporated into the contract documents by EPA's Remedial Action (RA) contractor or by the PRP depending on which entity takes the lead on the construction phase of the project. The remainder of the contract documents would be prepared by the RA contractor or PRP and would be tailored to meet the necessary contract conditions. The complete contract documents would include the drawings and specifications presented here and the following additional items to be prepared by the RA contractor or the PRP:

• Invitation for technical proposal and bid • Instructions to bidders • Representation and certification • Contract forms/agreement • General and supplementary conditions

WDCR846/027.WP5

1-3 ARQQOO! i Section 2.0 Site Background

The information in this section is taken from the December 30, 1991, ROD for OU-1.

The Dublin TCE Site is at 120 Mill Street in Dublin Borough, Bucks County, Pennsylvania, approximately 400 feet west of State Route 313 (see Figure 2-1). The Site (identified as the "Thompson Property" in Figure 2-2) occupies approximately 4'/2 acres and is bordered by residences and businesses on the east, west, and south. A fruit orchard borders the Site on the north and west. Site structures consist of a single-story brick building and a surrounding parking lot. Regional water is supplied primarily by private and public wells. The aquifer is classified as Class IIA, a current source of drinking water. Available information indicates that groundwater flows from southeast to northwest beneath the Site and is controlled predominantly by fractures. Groundwater beneath the Site flows toward residential and commercial wells in Dublin Borough.

Kollsman Motor Corporation (Kollsman) owned and operated the Site from 1959 to 1971, manufacturing miniature precision motors, gear trains, clutches, brakes, and related electromechanical components for aircraft and missiles. TCE was used as a degreasing solvent at a rate of approximately 15 gallons per week during the period that Kollsman conducted operations at the site. Spent TCE reportedly was disposed of at the Site by discharging it to the ground surface behind the building. Kollsman sold the property to Kollsman Instrument Corporation (KIC) in 1971.

In 1973, Athlone Industries, Incorporated (Athlone), purchased the property from KIC and operated the Site until 1986. At the Site, Athlone cleaned, stamped, packaged, and stored baseballs and softballs. In 1982, Athlone used safety solvent No. 2, which contains approximately 10 percent TCE, as a degreasing solvent. John H. Thompson purchased the property in 1986 and is the current owner and operator of the Site. Mr. Thompson uses part of the Site to restore antique race cars and leases part of the Site to Laboratory Testing, Incorporated (LTI). LTI uses the property for metallurgical testing.

During a routine survey of private water wells in the summer of 1986, the Bucks County Department of Health (BCDH) discovered levels of TCE as high as 1,000 parts per billion (ppb) in 23 samples of tap water. Approximately 170 homes, apartment units, and

2-1 Proposed Supply Well/**

Source: USGS 7.5 minute Quadrangle Map (Doylestown, PA)

r3ENNSYLVANIA *s Figure 2-1 SITE LOCATION MAP QUADRANGLE LOCATION . Dublin TCE Site Dublin Borough Supply Well #3 i i Rickerts Road

N. Main Street \ (Route 313) Whistlewood hopping Supply Well Apartment Cente

Elephant Road n Cherry Thompson Lana1 Property 'Site1 Deep Run Road '. J

Village Green Lanei

Source: Base Map from Geraghty & Miller, Inc RI/FS Work Plan May, 1992. Figure 2-2 SITE MAP Dublin TCE Site Dublin, Pennsylvania businesses in Dublin Borough were found to be affected. BCDH issued advisories to the public on ways to curtail water use and prevent further exposure to TCE. For residences having TCE levels higher than 5 ppb, BCDH recommended installing carbon filters. For residences having TCE levels above 500 ppb, the County cautioned residents not to use untreated tap water for bathing.

On September 3, 1986, the Emergency Response Section of EPA Region III received a request from BCDH to evaluate the Site. In a preliminary assessment, EPA determined the current use of all residential and commercial wells found to be contaminated by TCE. On June 29, 1987, EPA entered into a Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Section 106 Consent Order and Agreement with Mr. Thompson, who agreed to do the following: • Ensure that all residents and commercial employees exposed to TCE at levels greater than 5 ppb would have an adequate treatment system in place or would be supplied with bottled water. • Periodically monitor all carbon filters and air strippers being used by the residences and businesses to ensure that the units are functioning properly. • Periodically monitor groundwater for all residences and businesses at risk. The Consent Order and Agreement was amended in April 1991 to specify point-of-entry carbon filtration systems—that is, treatment systems installed at the point where potable water enters the household—for all residential dwellings where groundwater contamination was higher than 5 ppb TCE. At businesses, either bottled water or point-of-use carbon filtration systems were provided. The amendment also addressed the risk of inhaling TCE vapors released from groundwater. Residences that were previously equipped only with point-of-use treatment systems (for example, treatment systems at the kitchen tap) were subsequently supplied with the point-of-entry systems. Testing of residential wells under this order identified additional contaminants in the groundwater, including tetrachloroethylene (PCE) and vinyl chloride. On June 4, 1990, PaDER and Sequa Corporation (which now owns the former Kollsman Motor Corporation and KIC) entered into a Consent Order and Agreement under the Commonwealth's Clean Streams Act. Sequa Corporation agreed to investigate and abate the groundwater-contamination problems at and near the Site.

Thirteen monitoring wells have been installed at or near the property under separate studies by BCM (for Mr. Thompson) and Geraghty & Miller (for Sequa). Both the onsite and the offsite wells show contamination by volatile organic compounds (VOCs), including TCE and vinyl chloride. Three municipal supply wells in the Borough were tested for VOCs in 1991 by Dublin Borough. No contamination was detected in those wells.

2-4 The Site scored 28.9 under EPA's Hazard Ranking System and was proposed for inclusion on the CERCLA National Priorities List (NPL) on October 2, 1989. The Site was added to the NPL on August 30, 1990. , In 1991, EPA conducted a focused feasibility study (FFS) of OU-1 at the Site to evaluate means of providing an alternative supply of clean drinking water to the affected and potentially affected residences and businesses. EPA issued a, ROD on December 30, 1991, that described the remedy EPA proposed to implement for OU-1. The remedy EPA selected consisted of connecting affected businesses and residences to the Borough's existing water system by expanding the distribution system, developing a new water-supply well within the plume of contamination, and treating water from this well by air stripping before the water is distributed to the affected parties. The affected properties consist of 69 homes, apartment complexes, and businesses where well water exceeded or had the potential to exceed the maximum contaminant level (MCL) set by EPA or posed a cancer risk at a level of 1 x 10"6 or greater for VOCs, including TCE, PCE, and vinyl chloride. The ROD also identified residences and businesses whose wells require continued monitoring on the assumption that they may become contaminated by VOCs from the Site if a groundwater remedial action is not implemented by 1995.

During the preliminary design process it was determined that the new supply well would be constructed by retrofitting the Borough's existing TCE monitoring well. The existing well and the proposed treatment facility are located on an undeveloped lot behind (northeast of) the Dublin Village Plaza shopping center at 157-161 North Main Street (see Figure 2-2). EPA entered into a Consent Order and Agreement with Sequa Corporation on August 15, 1991. The Consent Order and Agreement requires Sequa Corporation to conduct an RI/FS at the Site. The RI/FS, expected to be completed in 1994, will address OU-2; the groundwater, the surface water, and the soil at the Site. Field activities related to the RI/FS are being performed.

WDCR848/001.WP5 Section 3.0 Existing Municipal Water Supply.System

3.1 Overview The Dublin Borough municipal water system consists of two active wells (Well 1 and Well 3), two inactive wells (Well 2 and Well 4), two well houses, an elevated tank reservoir, and the distribution-pipe network. The layout of the system and the area served is shown in Figure 3-1. The distribution-pipe network shown in Figure 3-1 consists of two parts, an existing network and a proposed network. The proposed section of the pipe network was designed under the first phase of OU-1, as explained in Section 1 of this report and is currently under construction.

The Dublin water system currently operates under two permits with the Bucks County Department of Health. The initial system consists of Wells 1 and 2, the elevated tank reservoir, and the distribution system. These facilities are operated under permit 0981502, which was obtained December 18, 1984. Wells 3 and 4 were added to the system under permit 0989504, which was obtained September 21, 1989. Well 2 was taken out of service sometime between 1989 and 1992. Well 4 has never been completed.

3.2 Water Supply Wells and Well Houses 3.2.1 Well Pumps

The two active wells are equipped with submersible pumps. The Well 1 pump operates on a timer, running for 6- to 15-minute intervals between 6:30 pm and 10:00 pm. It operates at 80 gallons per minute (gpm) and withdraws an average of 8,000 gallons of water per day (gpd). The Well 3 pump also operates on a timer, running for several 15-minute intervals during the evening. It operates at 150 gpm and withdraws an average of 26,000 gpd. The Well 3 pump also has a pressure override that will turn the pump on when the discharge pressure (on the header in the pump house) is reduced to 104 pounds per square inch (psi) and that will turn the pump off when the discharge , pressure reaches 109 psi. The Well 3 well house is equipped with an alarm system and an autodialer that alerts system operators of the following conditions: • Pump failure—overheat, overload • Power outage • Main power failure • Chlorine leak • Chlorine booster pump failure

AROOOOI7

Table 3-1 summarizes the specifications for each of the active wells, pumps, and instrumentation. 3.2.2 Disinfection Facilities

The water from both active wells is treated with chlorine for disinfection. Residual chlorine levels are maintained at 0.5 mg/L leaving the well houses. Table 3-1 lists the chlorination system components at each well. 3.2.3 Well Houses Wells 1 and 3 are located at separate well houses in the Borough. The well houses are configured with a pump room and a chlorine room, each with separate access to the outside, and are constructed of masonry block. Access to the well house properties and the wells is provided for vehicles the size of pickup trucks. No security -fences are provided. 3.3 Distribution Network: Existing and Proposed

The layout of the existing and proposed distribution network is shown in Figure 3-1.

The existing network serves approximately 178 service connections as of July 1994. The proposed network, which is currently being constructed under the first phase of the OU-1 remedy, will add an estimated 70 service connections, including a 144-unit apartment complex. The proposed network will not be activated until the supply well and the treatment system, being designed under the second phase of the OU-1 remedy, become operational. -. . According to records of.metered water use for Dublin Borough from May 1993 through September 1993 , the average daily demand in the existing network is approximately 24 gpm (70/gal/day/capita). The fire-flow demand is assumed to be 1,000 gpm, which is based on the Insurance Services Office's (ISO) Guide for Determination of Required Fire Flow.

On the basis of EPA estimates in Dublin TCE Site Focused Feasibility Study for Alternative Water Supply, revised for increased 1993 per capita use rates, the proposed network is expected to add 40 gpm to the average daily demand, for a total of 64 gpm for the entire system. A breakdown and discussion of the anticipated demand is presented in Section 4. . The Borough's existing distribution network has an emergency connection to the Bedminster Township public water supply system in the Stonebridge Community, on the east side of Elephant Road. The emergency connection, which typically is closed, is for use in case of significant interruptions in Dublin's or Bedminster's water supply. The interconnection can supply Dublin with up to 130,000 gpd but has not been used to date.

3-3 4ROOOOI9 Table 3-1 EXISTING WATER-SUPPLY WELLS, PUMPS, AND DISINFECTION EQUIPMENT Well 1 Well Diameter 6 in Pump Depth 210ft Top of Collar Elevation 611.57 ft amsl Pump Type Submersible, flat-bowl Pump Manufacturer Goulds Model UH 66KT32 Pump Flow 95 gpm @ 210 ft TDH Pump Hp 7.5 Water Meter Badger RecordAll II, Class II Turbo Timer Intermatic Chlorinator Fischer and Porter Chlorine Scale Manual, for 150 Ib cylinder Chlorine Booster Pump Goulds Chlorine Contact Tank 8-inch transmission pipe used for required contact time Well 3 Well Diameter 10 inches Pump Depth 350ft Static Water Level 81.0 ft below top of collar 48-Hour Water Level 107.9 ft below top of collar @ 178 gpm Top of Collar Elevation 500.00 ft amsl Well Cap Baker Monitor Div., Monitor PS Pump Type Submersible, flat-bowl Pump Manufacturer Peerless Pump Flow 148 gpm @ 357 ft TDH Pump Stages 6 Hp 20 Water Meter Rockwell Water-Level Chart Recorder Partlow MRC 7000 Pump Control Panel TLC Controls Chlorinator Fischer and Porter, Series 70-1710, 70-1730 Chlorine Scale Wallace and Tieraan, Dual 150 Ib cylinders Chlorine Detector Fischer and Porter, ChlorAlert Chlorine Booster Pump Grundfos Autodialer Rayco, Chatterbox Chlorine Contact Tank Buried Steel, 3000 gals

WDCR848/003.WP5/1

3-4 3.4 Elevated Tank Reservoir The elevated tank reservoir has a capacity of 150,000 gallons and fills and empties according to the system pressure. Table 3-2 presents a summary of the specifications for the elevated reservoir. Wells 1 and 3 pump into the distribution system directly and fill up the reservoir when production exceeds demand. Reservoir filling typically occurs during the night, when the well pumps are operated. During the day, when the well pumps are not operating, the system's customers are supplied by the volume stored in the reservoir.

WDCR848/002.WP5

3'5 Table 3-2 EXISTING DISTRIBUTION-SYSTEM RESERVOIR Type Chicago Bridge and Iron Company, Steel, Above-ground Number of Units 1 Volume 150,000 gal Base Elevation 613.50 ft amsl Base to Overflow Distance 133.50 ft Base to High Reservoir Level 132.60 ft Base to Low Reservoir Level 124.00 ft Base to Bottom of Bowl 104.00ft

WDCR848/003.WP5/2

3-6 Section 4.0 Design Criteria

4.1 Overview

The proposed supply well and treatment facility will be operated as part of the Dublin Borough municipal water supply system. It will be sized to meet the additional demands of the customers added to the municipal water supply distribution system as part of the OU-1 remedial action. Operation of the well and the treatment facility will be coordinated with the existing supply wells, storage tank, and distribution network and will be designed to meet applicable usage demands and drinking-water quality standards.

The proposed supply and treatment facility consists of a supply well, a submersible well pump, a manganese sequestering system, an air stripper with off-gas treatment, a booster pump, and a chlorination system. The Borough's existing TCE Monitoring Well is to be used as the new supply well. The basis for the selection at this well is discussed in Section 5.0.

4.2 Design Codes and Standards The design of the proposed supply well and treatment facility complies with the federal, state, and local codes and standards identified -below. Applicable discipline codes are referenced throughout the design specifications where they apply. 4.2.1 Federal Codes Listed below are the federal codes that govern the facility design. • Delaware River Basin Commission regulations for groundwater withdrawals in a Groundwater Protected Area of Southeastern Pennsylvania

• Building Officials and Code Administrators (BOCA) National Building Code, 1993 edition

• National Electric Code (NEC) 4.2.2 Pennsylvania and Bucks County Codes

Listed below are the state and county codes and guidelines that govern the facility design.

• PaDER's Community Water System Design Standards

4-1 5R000023 • Bucks County Conservation District's Erosion and Sedimentation Control Regulations • PaDER's Well Abandonment Guidelines (12/92) 4.2.3 Dublin Borough Codes

• Dublin Borough's Standard Specifications for Water System Construction

• Dublin Borough Ordinance No. 200 for Supply Wells

• Dublin Borough's Standard Specifications for Sanitary Sewer Construction

4.3 Design Water Demands 4.3.1 Supply Well and Treatment Facility Flow Demands The design criteria for the proposed supply well and treatment facility are based on an estimated average daily demand from the 71 customers to be added to the Borough's system under the OU-1 remedial action. The estimated average daily demand is 40 gpm. The estimate is based on accepted standard references for households and small businesses and, where available, on actual measured quantities. Table 4-1 shows a breakdown of the proposed new customers and lists anticipated water-use data for each customer. The total estimated use has been increased by 15 percent to account for system losses and by an additional 11 percent to account for annual variations in water use. The 11 percent was determined from variations in use observed in the Borough's existing system. One other factor in designing the supply well and treatment facility is the desire to establish some degree of containment of the TCE plume. As a result, the system will be designed to operate continuously (24 hours per day) to provide a constant cone of depression at the downgradient edge of the plume The supply-well pump will therefore be sized to operate at a rate of 40 gpm,.24 hours per day. A submersible pump is being used by the Borough at Well 1 and 3 and is recommended for use in the proposed supply well.

The maximum daily system demand, peak hourly demand and fire flow for the existing, proposed, and total system are shown in Table 4-2. The maximum daily demand was based on a peaking factor of 1.29 which was calculated from historical flow data from the Borough's existing system. The peak hourly demand was based on an assumed peaking factor of 7.0. Because the proposed well will be pumping at a constant rate of 40 gpm, the maximum daily, peak hourly, and fire flow demands for the proposed system will be met using water stored in the elevated storage tank (see Section 4.3.3).

4-2 Table 4-1 AFFECTED OR POTENTIALLY AFFECTED RESIDENCES AND BUSINESSES Page 1 of 4 Water Use Address Property Owner Occupancy (gpd) Elephant Road 111 Hope Residence 160 a 113 Miller Residence 160 a 114 Slaymaker Residence 160 a 115 Conrad Residence 160 a 116 Black Residence 320 a 119 Hess Residence 160 a 139 Meyers Residence 160 a 141 Moyer Residence 160 a 146 Moyer Residence 160 a 147 Detweiler Vacant Lot 0 149 Fair Residence 160 a 150 Detweiler Residence 160 a 151 Sulpizio Residence 160 a 152 Rush Residence 160 a 153 Hager Residence 160 a 154 Fretz Residence 160 a 155 Worthington Residence 160 a 156 Blichasz Residence 160 a 162 Stewart Residence 160 a 166 Vanderleeuw Residence 160 a 168 Smith Residence 160 a 172 Levy Residence 160 a 174 Levy Residence (2 units) 320 a Table 4-1 AFFECTED OR POTENTIALLY AFFECTED RESIDENCES AND BUSINESSES Page 2 of 4 Water Use Address Property Owner Occupancy (gpd) Maple Avenue 100 Shultz Residence, Business 160 a 104 Buchanan Residence, Business 480 a 108 Williams Residence 160 a 110 Moyer Residence 240 a 112 Klembeth Business 160 a 114 Klembeth Residence 320 a 116 Rice Residence 160 a 118 Hilltown Invst. Grp. Residence 720 a 120 Detweiler Residence 160 a 122 Vasconez Residence 240 a 126-132 Shaddinger Residence 320 a 134 Morrison Residence 320 a 136 Kohl Residence 160 a Mill Street 104 Agway Inc. Business (vacant) 500 a 120 Thompson Business 1,400 b North Main Street 105 DellaBadia Residences, Business 500 a 106 Dairy Queen Business 210 b 112 Rhine Gas Station Business 50 b 113 Hinsdale Residence 160 a 115 Boyle Residence 160 a 116 Occhi Residence 160 a Table 4-1 AFFECTED OR POTENTIALLY AFFECTED RESIDENCES AND BUSINESSES Page 3 of 4 Water Use Address Property Owner Occupancy (gpd) 117 Buchanan Residence 160 a 119 Hirst Residence 160 a 122 Rufe Residence 160 a 123 MODUTEC Inc. Business (vacant) 1,200 b 124 Meyers Residence 160 a 126 Meyers Residence, Business 300 a 128 Fluck Residences 320 a 130 Moyer Residence 160 a 131 Evans Post Office 80 a 133 Dublin Fam.Rest. Business 1,200 b 133 (rear) Jacobs Auto Sup. Business 80 a 134 Moyer Business 220 b 138 Moyer Residence, Business 320 a 139 Dublin Service Sta. Business 45 b 142 1st Fed S & L Perkasie Business - 35 b 145 Bucks Co. Bank Business 170 b 146 Whistlewood Commons Residences 16,500 b 149 Grady Residence 160 a 150 Daniel Vacant Lot 0 153 Myrick Residences 320 a 157-161 Dublin Village Center Businesses 6,000 b 164 Bagel Jake's Business 400 a 169 7-11 Store Business (vacant) 215 b 170 G & T Company Residences 1,400 . b Table 4-1 AFFECTED OR POTENTIALLY AFFECTED RESIDENCES AND BUSINESSES Page 4 of4 Water Use Address Property Owner Occupancy (gpd) 173 Myers Residence 160 a 174 Family Health Services Businesses 390, b 179 Crouthamel Residence, Business 240 a 183 Moyer Residence, Business 2,500 b 194 Dublin Vol. Fire Co. Fire Station 1,000 b South Main Street 101 Dublin Inn Business 330 b Subtotal 45,000 System Losses (assume 15%) 6,700 Subtotal 51,700 Contingency to account for high-demand years (11%) 5,700 Total 57,400 Total (gpm) 40 Key

a: Water-demand value based on standard references or similar use data. b: Water-demand value based on actual measured quantities.

WDCR843/011.WP5 Table 4-2 SUMMARY OF DESIGN WATER DEMANDS Average Daily Maximum Peak Hourly System Daily System System Demand Demand1 Demand2 Fire Flow3 (gpm) (gpm) (gpm) (gpm) Existing System 24 31 168 1,000 'Proposed System 40 51 280 1,000 Total 64 82 448 1,000 ^ased on 1.29 peaking factor calculated from Borough flow data 2 Assumed 7.0 peaking factor 3Based on Insurance Services Office guide " -

4.3.2 Distribution System Flow and Pressure Demands The design of the proposed distribution system was completed by others during the first phase of the OU-1 remedial design. The proposed system is analyzed, here to evaluate the effects of the proposed supply well on system pressures and to determine system storage requirements. The layout of the existing and proposed distribution system and supply well is shown in Figure 3-1. Hydraulic analyses were performed on the existing and proposed system under a variety of extreme flow demands and reservoir levels, using the NETWK computer program for pipe-network analysis. The analyses were used to simulate future operating conditions and to evaluate minimum and maximum pressures in the existing and proposed systems. A pipe system in NETWK is defined by numbered nodes and pipes. Nodes are points in the system that mark pipe intersections, source pumps, and storage reservoirs. The node- and pipe-numbering scheme used for this application is shown in Figure 3-1.

PaDER design standards recommend that the normal working pressure of the system be approximately 60 psi and that a minimum of 20 psi be maintained under all conditions of flow. Table 4-3 summarizes the results of the various NETWK runs for the existing system.

System characteristics are summarized below: • The existing and proposed systems, as modeled, will serve approximately 249 service connections. • The average daily demand in the existing system is approximately 24 gpm (from Borough records). The fire-flow demand is 1,000 gpm.

4-7 ^000029 Table 4-3 C0 u ^ •< 5 £ >F DISTRIBUTION NETWORK |ilr .fa >Js » ~*"&S^ II:: l S "-fa§ b ^T?

Condition of i *K § a. S* •§ 1| "S I si" s « 3 fa—^ £: SP t/S Jj' New Supply i& Isr f •o w U I a en O « c Well Booster Pump (ON/OFF) - t lo O tin O § CN O s ^ Q 2 > (U s - In O B. UH 1 (S O s o "• Q Si o U fn o CO O 0 >n O S § o o P, SB efl i O 3 ± o o 0 O >n Tf 1 ts o o OH ffi cd O 3 u. •*! VO o O p^ § 0 S E Tt- o OH ^ SB CQ a O 3 Ul 1 8 •*, o »— * 1 S •a E ••* o 8 PH ^ O 3 U. K Q U o ^. cu f >• ' I • The average daily demand in the proposed system is approximately 40 gpm (see Table 4-1). • A peaking factor of 7.0 was used to compute peak hourly demand from average daily demand. This value is consistent with standard literature values for small communities (see Table 4-2).

Under all the modeled conditions, the system pressures remain well above the minimum pressure of 20 psi required by PaDER and are near the recommended 60 psi average pressure. A hydropneumatic tank was found to be unnecessary because of the insignificant fluctuations in system pressure. 4.3.3 Storage Demands The Borough's existing elevated tank reservoir is proposed to supply peak flows to the existing and proposed system. The Handbook of Public Water Systems suggests sizing a storage reservoir for dampening diurnal flow peaks and for fire flow. Using 21 percent (from the Handbook) of the maximum daily demand of 82 gpm, or 118,000 gallons per day (Table 4-2), as the criterion for diurnal flow variations, the reservoir should store 24,900 gallons. Storage for fire flow should be 2 hours at 1,000 gpm, equaling 120,000 gallons. The total recommended storage is therefore 144,900 gallons, which is less than the existing storage capacity of 150,000 gallons. No additional storage capacity is proposed for the new system. 4.3.4 Sewerage Demands The Borough of Dublin is completely sewered. The Borough owns and operates a treatment plant on Deep Run in Bedminster Township. The plant has a capacity of 500,000 gpd and currently treats an average of 150,000 gpd. The implementation of the proposed supply well and treatment facility will not increase flow rates and treatment requirements for the wastewater treatment plant because all properties to be served by the proposed water supply facility are already connected to the Borough's sewer system. 4.3.5 Provisions for Future Water Demands

The objective.of the remedial action for OU-1 is to provide a safe supply of drinking water to those properties affected or potentially affected by the TCE plume. The number of affected properties is not expected to increase substantially prior to the implementation of a groundwater remedial action (OU-2). EPA and PaDER are not required to provide . facilities that account for the future development of the Borough. .

AR00003I 4.4 Design Water Quality Criteria 4.4.1 Summary of Water Quality Standards and Results

Potable water for community water systems (as defined by PaDER) must meet the requirements listed in Table 4-4. Results from water quality samples collected from the proposed supply well at the completion of a 48-hour pumping test are presented in Table 4-5. Water quality parameters that may be of concern are discussed below. 4.4.2 Volatile Organic Compounds Preliminary indications from the testing of other nearby supply wells in the Borough are that treatment will be necessary to address the potential for exceeding the MCLs for TCE tetrachloroethene (PCE) and vinyl chloride. Although these VOCs are not currently being detected in the proposed well, the well is at the downgradient edge of the TCE plume, and contaminant concentrations at the well are expected to rise when the well becomes operational. When the proposed well begins operating, all of the wells which are currently withdrawing water from within the plume will be abandoned and the proposed well will become the closest active supply well downgradient of the plume's source area. Conservative estimates of the potential long-term contaminant concentration at the well are 250 jtg/L of TCE, 30 /*g/L of vinyl chloride, and 20 /*g/L of PCE. The estimated TCE concentration is based on concentrations observed at the Whistlewood Apartments' supply well, currently the largest-yield supply well within the plume. PCE and vinyl chloride have not been detected in the Whistlewood well. The estimates of PCE and vinyl chloride concentrations are very conservative, and are equal to the highest concentration observed within the plume. VOCs will be removed from the groundwater by air stripping as required by the ROD. 4.4.3 Manganese

Manganese was found to be present in two samples collected from the proposed supply well at concentrations of 0.063 mg/1 and 0.057 mg/1 which are above the Pennsylvania drinking water standard of 0.05 mg/1. Water from the new supply well will be treated with a sequestering agent as required by PaDER regulations for concentrations of manganese between 0.05 mg/1 and 1.0 mg/1. 4.4.4 Other Water-Quality Parameters

All water-quality parameters other than manganese were below regulatory levels except as noted below.

Total fecal coliform was analyzed in three samples collected at 15-minute intervals at the conclusion of the 48-hour pumping test. In addition, a duplicate was collected and analyzed at each 15-minute sample interval. One of the samples collected during the first

4-10 B ^ ~ flR00003'2 Table 4-4 PaDER NEW SOURCE SAMPLING AND TESTING REQUIREMENTS FOR COMMUNITY WATER SYSTEMS— GROUNDWATER SOURCES Page 1 of 4 Parameter Regulatory Standard Inorganic Compounds Arsenic 0.050 mg/L Barium 1 mg/L Cadmium 0.005 mg/L Chromium, total 0.050 mg/L Fluoride 2 mg/L Lead 0.015 mg/L1 Mercury 0.002 mg/L Nitrate (as N) 10 mg/L Selenium 0.010 mg/L Silver 0.050 mg/L Sodium N/A Organic Chemicals Total Trihalomethanes 100 Mg/L Endrin 0.2 Mg/L Lindane 0.2 Mg/L Methoxychlor 40 Mg/L Toxaphene 3 Mg/L 2,4-D 100 Mg/L 2,4,5-TP (Silvex) 10 Mg/L Volatile Organic Compounds Trichloroethylene (TCE) 5 Mg/L Tetrachloroethylene (PCE) N/A Carbon Tetrachloride 5 Mg/L 1 1 , 2-Dichloroethane 5 Mg/L I | Benzene 5 Mg/L

AR000033 Table 4-4 PaDER NEW SOURCE SAMPLING AND TESTING REQUIREMENTS FOR COMMUNITY WATER SYSTEMS— GROUNDWATER SOURCES Page 2 of 4 Parameter Regulatory Standard Vinyl chloride 2 Mg/L 1 , 1-Dichloroethylene 7 Mg/L 1,1,1 Trichloroethane (1,1,1-TCA) 200 Mg/L p-Dichlorobenzene 75 Mg/L Unregulated VOCs Bromobenzene N/A Bromomethane N/A Chlorobenzene N/A Chloroethane N/A Chloromethane N/A o-Chlorotoluene N/A p-Chlorotoluene N/A Dibromomethane N/A m-Dichlorobenzene N/A o-D ichlorobenzene 600 Mg/L trans- 1 ,2-Dichloroethylene 100 Mg/L cis-1 ,2-Dichloroethylene 70 Mg/L Dichloromethane N/A Ethylene dibromide (EDB) 0.05 Mg/L 1 , 1-Dichloroethane N/A 1 , 1 -Dichloropropene N/A 1 ,3 -Dichloropropene N/A 1 ,2-Dichloropropane 5 Mg/L 1 ,3-Dichloropropane N/A 2 , 2-Dichloropropane N/A Ethylbenzene 700 Mg/L

WOOOos, 1 Table 4-4 PaDER NEW SOURCE SAMPLING AND TESTING REQUIREMENTS FOR COMMUNITY WATER SYSTEMS-GROUNDWATER SOURCES Page 3 of 4 Parameter Regulatory Standard Styrene 100 Mg/L 1 , 1 ,2-Trichloroethane N/A 1,1,1 ,2-Tetrachloroethane N/A 1 , 1 ,2,2-Tetrachloroethane. N/A 1 ,2,3-Trichlofopropane N/A Toluene 1,000 Mg/L p-Xylene 10,000 Mg/L Total Xylenes io-Xylene 10,000 Mg/L Total Xylenes m-Xylene 10,000 Mg/L Total Xylenes 1 ,2-Dibromo-3-Chloropropane (DBCP) 0.2 Mg/L Microbiological Total Coliform2 1 per 100 mL Radiological Gross Alpha, adjusted3 15 pCi/L Radium 226/228, total 5pCi/L Secondaries Alkalinity N/A 1 Calcium . N/A Chloride 250 mg/L Color 15 units Copper 1 mg/L Corrosivity (Langelier Index) Noncorrosive Foaming agents 0.5 mg/L Manganese 0.05 mg/L Total dissolved solids 500 mg/L Iron 0.3 mg/L Table 4-4 PaDER NEW SOURCE SAMPLING AND TESTING REQUIREMENTS FOR COMMUNITY WATER SYSTEMS-GROUNDWATER SOURCES Page 4 of 4 Parameter Regulatory Standard PH 6.5 - 8.5 Sulfate 250 mg/L Zinc 5 mg/L Turbidity 1NTU Odor 3 threshold odor number Notes: !Not an MCL; a level at which public water systems must take action to reduce concentration. 2Three samples collected at 15-minute intervals. 3Adjusted gross alpha activity is calculated by subtracting the uranium activity from the total gross alpha activity. If total gross alpha results exceed 5 pCi/L, the sample must be analyzed for radium-226 and radium-228.

WDCR843/012.WP5 Table 4-5 SUMMARY OF GROUNDWATER SAMPLING RESULTS PROPOSED SUPPLY WELL1 (Sampled at Conclusion of 48-Hour Pumping Test) Page 1 of 5 Parameter Sample Duplicate Inorganic Compounds Arsenic 0.0035 mg/L 0.0030 mg/L Barium 0.13 mg/L 0.12 mg/L Cadmium < 0.001 mg/L < 0.001 mg/L Chromium <0.05 mg/L <0.05 mg/L Fluoride 0.1 mg/L 0.1 mg/L Lead < 0.005 mg/L < 0.005 mg/L Mercury < 0.001 mg/L < 0.001 mg/L Nitrate (as N) <0.5 mg/L <0.5 mg/L Selenium <0.01 mg/L <0.01 mg/L Silver <0.05 mg/L <0!05 mg/L Sodium 1 mg/L 1 mg/L Organic Compounds Endrin <0.01 Mg/L <0.01 Mg/L Lindane <0.02 Mg/L < 0.02 Mg/L Methoxychlor <0.1 Mg/L <0.1 Mg/L •Toxaphene < 1 Mg/L < 1 Mg/L 2,4-D <0.1 Mg/L < 0.1 Mg/L 2,4,5-TP (Silvex) < 0.2 Mg/L <0.2 Mg/L Trihalomethanes Dichlorobromomethane <0.5 Mg/L < 0.5 Mg/L Bromoform <0.5 Mg/L ' <0.5 Mg/L Chloroform <0.5 Mg/L < 0.5 Mg/L Dibromochloromethane <0.5 Mg/L <0.5 Mg/L

AR000037 Table 4-5 SUMMARY OF GROUNDWATER SAMPLING RESULTS PROPOSED SUPPLY WELL1 (Sampled at Conclusion of 48-Hour Pumping Test) Page 2 of 5 Parameter Sample Duplicate Volatile Organic Compounds (VOCs) Trichloroethylene (TCE) <0.5 Mg/L <0.5 Mg/L Tetrachloroethylene (PCE) <0.5 Mg/L <0.5 Mg/L Carbon tetrachloride < 0.5 Mg/L <0.5 Mg/L 1 ,2-Dichloroethane <0.5 Mg/L <0.5 Mg/L Benzene <0.5 Mg/L <0.5 MS/L Vinyl chloride <0.5 Mg/L <0.5 Mg/L 1 , 1-Dichloroethylene <0.5 Mg/L <0.5 Mg/L 1,1, 1-Trichloroethane (1,1, 1-TCA) <0.5 Mg/L <0.5 Mg/L p-Dichlorobenzene <0.5 M8/L <0.5 Mg/L Unregulated VOCs Bromobenzene <0.5 Mg/L <0.5 Mg/L Bromomethane <0.5 Mg/L <0.5 Mg/L Chlorobenzene <0.5 Mg/L <0.5 Mg/L Chloroethane <0.5 Mg/L <0.5 Mg/L Chloromethane <0.5 Mg/L < 0.5 Mg/L o-Chlorotoluene <0.5 Mg/L <0.5 Mg/L p-Chlorotoluene ' ' <0.5 Mg/L <0.5 Mg/L D ibromomethane <0.5 Mg/L < 0.5 Mg/L m-Dichlorobenzene <0.5 Mg/L <0.5 Mg/L o-D ichlorobenzene <0.5 Mg/L <0.5 Mg/L 1 ,2,4-Trichlorobenzene <0.5 Mg/L <0.5 Mg/L trans-1 ,2-Dichloroethylene <0.5 Mg/L < 0.5 Mg/L cis-1 ,2-Dichloroethylene < 0.5 Mg/L < 0.5 Mg/L D ichloromethane <0.5 Mg/L <0.5 Mg/L Ethylene dibromide (EDB) < 0.02 Mg/L < 0.02 Mg/L 1,1-Dichloroethane <0.5 Mg/L <0.5 Mg/L Table 4-5 SUMMARY OF GROUNDWATER SAMPLING RESULTS PROPOSED SUPPLY WELL1 (Sampled at Conclusion of 48-Hour Pumping Test) Page 3 of 5 Parameter Sample Duplicate 1,1-Dichloropropene < 0.5 Mg/L <0.5 Mg/L 1 ,3-Dichloropropene <0.5 Mg/L < 0.5 Mg/L 1 ,2-Dichloropropane <0.5 Mg/L <0.5 Mg/L 1 ,3-Dichloropropane <0.5 Mg/L <0.5 Mg/L 2 , 2-Dichloropropane < 0,5 Mg/L . <0.5 Mg/L Ethylbenzene < 0.5 Mg/L <0.5 Mg/L Styrene <0.5 Mg/L <0.5 Mg/L 1 , 1 ,2-Trichloroethane < 0.5 Mg/L <0.5 Mg/L 1,1,1 ,2-Tetrachloroethane <0.5 Mg/L <0.5 Mg/L 1 , 1 ,2,2-Tetrachloroethane < 0.5 Mg/L <0.5 Mg/L 1 ,2,3-Trichloropropane <0.5 Mg/L <0.5 Mg/L Toluene <0.5 Mg/L <0.5 Mg/L p-Xylene <0.5 Mg/L < 0.5 Mg/L o-Xylene <0.5 Mg/L <0.5 Mg/L m-Xylene <0.5 Mg/L <0.5-Mg/L 1 ,2-Dibromo-3-Chloropropane (DBCP) <0.02 Mg/L <0.02 Mg/L Microbiological Total Coliform (initial sample)2 45 per 100 mL < 1 per 100 mL Total Coliform (after 15 minutes) < 1 per 100 mL . < 1 per 100 mL Total Coliform (after 30 minutes) < 1 per 100 mL < 1 per 100 mL Radioactivity Gross alpha, total 21.6 ± 4.3pCi/L . 17.0 ±3.5 pCi/L Uranium 7.0 pCi/L 7.7 pCi/L Gross alpha, adjusted3 14.6 pCi/L 9.3 pCi/L Radium 226 0.63 + 0.05 pCi/L 2.18 ± O.lOpCi/L Radium 228 2.4 ± 0.5 pCi/L 2.4 ± 0.7 pCi/L Table 4-5 SUMMARY OF GROUNDWATER SAMPLING RESULTS PROPOSED SUPPLY WELL1 (Sampled at Conclusion of 48-Hour Pumping Test) Page 4 of 5 Parameter Sample Duplicate Secondaries Alkalinity (total) 155 mg/L 191 mg/L Calcium 56 mg/L 56 mg/L Chloride 36 mg/L 37 mg/L Color <5 units <5 units Total Copper • <0.05 mg/L <0.05 mg/L Foaming Agents (Detergents) <0.05 mg/L <0.05 mg/L Manganese 0.063 mg/L 0.057 mg/L Total Dissolved Solids (IDS) 266 mg/L 264 mg/L Total Iron 0.21 mg/L 0.054 mg/L pH 7.68 7.74 Sulfate 37 mg/L 42 mg/L Total Zinc < 0.05 mg/L <0.05 mg/L Turbidity 0.4 units 0.4 units Dissolved Metals Dissolved Arsenic <0.04 mg/L N/A Dissolved Barium 0.14 mg/L N/A Dissolved Cadmium <0.01 mg/L N/A Dissolved Calcium 56 mg/L N/A Dissolved Chromium <0.05 mg/L N/A Dissolved Copper <0.05 mg/L N/A Dissolved Iron <0.05 mg/L N/A Dissolved Lead < 0.005 mg/L N/A Dissolved Mercury < 0.001 mg/L N/A Dissolved Selenium <0.01 mg/L N/A Dissolved Silver <0.05 mg/L N/A

AROOOOtfO Table 4-5 SUMMARY OF GROUNDWATER SAMPLING RESULTS PROPOSED SUPPLY WELL1 (Sampled at Conclusion of 48-Hour Pumping Test) Page 5 of 5 Parameter Sample Duplicate Dissolved Sodium 18 mg/L N/A Dissolved Zinc <0.05 mg/L N/A 'All analyses were conducted by QC Inc., of Southhampton, PA except: gross alpha and radium 226/228 analyses were conducted by Pennsylvania State University Laboratory at State College, PA, and uranium analyses were conducted by PaDER Laboratories of Harrisburg, PA. 2The initial microbiological sample was collected 30-minutes prior to the end of the 48-hour pumping test. 2Adjusted gross alpha activity is calculated by subtracting the uranium activity from the total gross alpha activity.

WDCR843/013.WP5

flROOOOM interval, was found to contain 45 colony-forming units (mf)/100 ml. The duplicate of this sample as well as the other two samples and two duplicates were found to contain less than 1 mf/100 ml. Based on these results, it is believed that the contamination found in the first sample was a result of improper sample handling or collection rather than an indication of coliform contamination in the well water.

Both the primary sample and duplicate samples were initially analyzed for total gross- alpha-particle activity in accordance with PaDER drinking water requirements. Because the results of this indicator test were above the 5 picocuries/liter (pC; 1) guideline (see Table 4-4), the samples additionally were analyzed for radium 226 and radium 228 as required by PaDER regulations. The results of these analyses indicated that total radium 226/228 levels were below the drinking water standard of 5 pCi/1. The samples were also analyzed for uranium in order to evaluate the adjusted gross-alpha- particle activity. The method of determining adjusted gross alpha is to take the total gross- alpha activity and subtract the activity attributable to uranium. Current federal and state drinking water regulations state that the MCL of 15 pCi/1 for gross-alpha-particle activity pertains to this adjusted value. Based on the uranium results, the adjusted gross-alpha activities were calculated to be below the 15 pCi/1 MCL. The results indicate that all radionuclides are below the federal drinking water standards. A trip blank was collected and analyzed for VOCs for quality control purposes. The trip blank results were below detection limits for all analyzed VOCs. The laboratory analytical reports for all of these samples are provided in Appendix A.

WDCR843/009.WP5

4"2° AROOOOl*2 Section 5.0 Proposed Facility Description

5.1 Process Overview

Figure 5-1 shows the major components of the proposed public water supply and treatment facility, the general process layout, and design flow rates. A submersible pump, installed in the proposed supply well, discharges untreated groundwater to the treatment system building located nearby. A manganese sequestering agent is first added to the raw water. The water then enters a diffused air stripper designed to remove expected concentrations of TCE and other related VOCs. Air is supplied to the diffused air stripper by three blowers. Off-gas from the diffused air stripper is heated by an inline duct heater to reduce the relative humidity, sent through a vapor-phase carbon adsorption system to remove VOCs, and discharged to the atmosphere. Effluent from the diffused air stripper is discharged to an effluent tank. A booster pump, which operates intermittently, then delivers the treated water through a transmission line to the public distribution system. A sodium hypochlorite solution is injected in the booster pump discharge line for disinfection. A 20-minute chlorine contact period is provided in an enlarged section of the transmission line upstream of the distribution system. Each component of the proposed public supply and treatment system is discussed in detail in the following sections.

5.2 Supply Well /- 5.2.1 Site Selection

The Borough's existing TCE Monitoring Well has been selected for use as the new supply well for the OU-1 remedial action. The well is located on an undeveloped lot situated behind (north of) the Dublin Village Plaza shopping center at 157-161 North Main Street. The well was chosen after evaluating all other existing wells within the contaminant plume as well as considering installation of a new well at various locations within the plume (CH2M HILL 1993a). The evaluation process looked at factors including; yield, contaminant concentrations, location relative to the plume and the likelihood that pumping the well would not spread the plume, distance from the source area, protection of the other nearby supply wells, and cost.

Representatives from the PaDER.Bureau of Water Supply and Community Health and the Bucks County Department of Health conducted preliminary site visits in November 1993 and have given preliminary oral approval for the well location. g5 ,p 555, s5f 555 gsaS coo s ill! I B fe a Q « a 1I stiIa S g 'so i< S Sg 11 (^ LI If i 5 i _ _ 0._. ....© .© ....© ...... _. .._:»]! Wetlands. A wetlands specialist from EPA Region III conducted a visit of the proposed well and treatment facility site on April 22, 1994 to identify the presence of wetlands. EPA determined that there are no wetlands at the proposed site.

100-Year Flood Plain. The Borough does not participate in the national flood insurance program and, as a result, no 100-year flood plain maps have been generated for the area. However, aside from manmade farm ponds, there are no surface water bodies within the Borough and flood insurance is not required for any Borough properties. The nearest surface water body to the proposed well site is a headwaters to a small unnamed tributary to Deep Run. It is approximately 1,000 feet from the proposed site and at least 20 feet below the elevation of the well. 5.2.2 Source Exploration

The proposed supply well (TCE Monitoring Well) was installed in July 1990 by W. Rollin Raab & Son of Hartsville, Pennsylvania. The original purpose for the well was to provide a monitoring point for groundwater quality between the Dublin TCE Superfund Site (Superfund Site) and the Borough of Dublin Supply Well No. 3. The Superfund Site is the source of a plume of TCE-contaminated groundwater. Because the well is not currently a supply well, a state registration form has not yet been completed.

Groundwater samples collected quarterly from the proposed supply well on behalf of the Borough have not indicated TCE or other volatile organic compounds above the detection limits to date. However, because TCE is present in nearby wells, the proposed supply well is believed to be at or near the downgradient edge of the plume. All of the wells located between the proposed supply well and the Superfund Site contain concentrations of TCE above MCLs. The' nearest contaminated well is within 200 feet of the proposed supply well. The proposed supply well is 6 inches in diameter and 400 feet deep, and is finished as an open borehole in shale bedrock. A 6-inch inside diameter (ID) steel surface casing extends through the overburden to a depth of approximately 42 feet below the ground surface. For •more information concerning the drilling and construction of the proposed supply well, refer to the well installation report prepared by Mercuri & Associates in 1990 (Mercuri, 1990). The Mercuri report includes the drilling log, a well construction diagram, and the results of initial well performance and water quality testing. In November 1993, CH2M HILL conducted a step drawdown pumping test and a 48-hour pumping test on the proposed supply well. The tests included the monitoring of water levels in 16 nearby monitoring and supply wells,'and the collection and analysis of water quality samples for all applicable Pennsylvania drinking water parameters. The results of the pumping test were previously submitted to the Borough and all involved regulatory agencies in a report titled Hydrogeologic Report of the Proposed Supply Well, Operable Unit 1, Dublin TCE Site, CH2M HILL, January 1994. The hydrogeologic report was prepared in order to meet the permitting requirements of PaDER, DRBC, and Dublin

5-3 Borough, and is considered part of the water supply permit submirtal. In addition to the results of the pumping test, the report contains a description of the geologic and hydrogeologic framework near the well and a copy of the previously discussed well- installation report by Mercuri. The results of the water quality sampling have been updated since the submittal of the hydrogeologic report to include results for radiochemical analyses which were not previously available. The updated results are presented and discussed in Section 4.4.1 of this report. 5.2.3 Sources of Contamination The only known source of contamination in the vicinity of the proposed supply well is the previously discussed plume of TCE migrating from the Superfund Site at 120 Mill Street, approximately 1,650 feet south and upgradient of the well. As required by the ROD for OU-1, me well was selected because it is within, or at the edge of, this plume. The treatment system for the 'well includes an air stripper which has been designed to remove TCE and other VOCs at the estimated maximum concentrations that might be expected.

There are no septic systems within at least 1,200 feet of the proposed supply well. All Dublin Borough residents are serviced by the Borough's public sanitary sewer system. The nearest sanitary sewer line is a lateral servicing the rear of Dublin Village Plaza shopping center. This sewer line over 300 feet from the proposed supply well. 5.2.4 Well Retrofitting The existing monitoring well will be retrofitted to meet the anticipated needs and regulatory requirements of the proposed supply well. Retrofitting will involve: • Removing the existing 6-inch-diameter, 40-foot-long, temporary surface casing. This casing was installed using a temporary bentonite grout which should allow the removal of the casing.

• Reaming and deepening the existing 6-inch-diameter, 400-foot-deep, borehole to a diameter of 10 inches and a depth of 450 feet.

• Installing a permanent 10-inch-diameter steel or wrought iron surface casing to a depth of 40 feet and installing a pitless adaptor of compatible size and material. The bottom 410 feet of the well will be open borehole.

The enlarged well will be equipped with a 4-inch-diameter submersible pump and a 2-inch poly vinyl chloride (PVC) riser pipe. The pump will be set at a depth of 200 feet below the ground surface (bgs) and has been sized to discharge 40 gpm at an expected water level surface of 120 feet bgs. The anticipated drawdown was determined from the results of the step-drawdown pumping test conducted in November 1993; results of the pumping test are

5-4 discussed in the hydrogeologic report. Design specifications for the well and submersible pump are summarized in Table 5-1.

Table 5-1 SPECIFICATIONS FOR THE SUPPLY WELL AND PUMP Diameter of existing monitoring well 6 in Diameter of proposed supply well 10 in Depth of existing monitoring well 400ft Depth of proposed supply well 450ft Static water level (November 1993) 99 ft bgs Estimated water level at 40 gpm 120 ft bgs Top of collar elevation 18 inches above ground 509.5 ± ft amsl Pump type 4-inch submersible Pump flow 40 gpm Pump setting 200 ft bgs Pump stages 8 Pump hp 3 bgs = below ground surface . amsl = above mean sea level

The proposed supply well will be equipped with a water level element which will relay a signal to a continuous chart recorder and digital display located in the treatment building. The level element also will signal the instrumentation panel to automatically shut off the well pump if the water level in the well drops below the pump intake. If the well pump is shut off or fails for any reason, the rest of the treatment system will automatically shut down and a well-pump fail signal will be transmitted to the autodialer which will contact the designated operations personnel with the appropriate message.

The well also will be equipped with an auxiliary water-level measuring device consisting of a 1/8-inch-diameter air tube, manual air pump, and pressure gauge. This gauge will provide a manual check on the accuracy of the continuous-level transmitter. 5.3 Piping and Appurtenances

All water piping from the well to the point at which the treated water leaves the treatment building will be Schedule 80 CPVC. The transmission line from the treatment building to the distribution system, including the chlorine contact line, will be Class 52 ductile iron. Sanitary sewer lines will be schedule 80 PVC. Pipe diameters are shown on the Drawings. Valves, flow meters, pressure gauges and other appurtenances are as shown on Drawings 1-2 through 1-4, the process and instrumentation diagrams, as well as M-l through M-3, the mechanical drawings. Water sampling ports are provided on the raw water influent line prior to the sequestering agent feed, on the discharge line from the diffused air stripper effluent tank, on the booster pump discharge line downstream of chlorine injection, and at the end of the chlorine contact line. All outside piping will be placed in trenches with a minimum cover of 3 feet to prevent freezing. Aboveground piping will be limited to that inside the treatment building, except for the influent air line to the vapor-phase carbon adsorber and several vents and air intakes. The temperature inside the treatment building will be controlled to prevent freezing of water lines and other equipment.

5.4 Manganese Sequestering System

The manganese sequestering system is designed to treat a continuous flow rate of 40 gpm with expected concentrations of manganese ranging from 0.05 mg/L to 0.07 mg/L. Sequestering will be accomplished by adding an aqueous sequestering-agent solution containing 4,200 mg/L polymerized sodium/potassium phosphate to the raw water stream prior to VOC removal. The design feed rate of the dilute solution is 1 gph. The feed system consists of a 500-gallon solution tank equipped with a mechanical mixer, a solution metering pump, and a 0.5-inch PVC delivery line. A 1-inch copper treated- water fill pipe is provided for the tank for solution makeup. The water is pumped from the air stripper effluent tank by the booster pump.

A portable drum pump is provided for transferring concentrated sequestering agent into the solution tank for dilution. The concentrated sequestering agent is delivered and stored onsite in 5- or 10-gallon carboys. The solution tank is equipped with overflow and drain lines which are discharged to the building sump and then pumped to the sanitary sewer.

Each batch of sequestering agent is made manually by mixing the required volumes of treated water and sequestering-agent concentrate. During the solution makeup process, the well pump and treatment system must be shut down temporarily to prevent the addition of improper concentrations of sequestering agent. The solution tank has been sized to provide a 15-day supply of sequestering agent. The estimated time required to refill the batching tank is 30 minutes.

5-6 The solution tank is equipped with a level indicator and high and low level alarms. The low level alarm will shut down the well pump and treatment system and will signal the autodialer to deliver the appropriate message to operations personnel. A high level indication will sound a local alarm. The sequestering agent feed pump operates whenever the well pump operates. The sequestering agent pump shuts down automatically when the well pump turns off or fails, and starts automatically when the well pump turns on. In the event that the sequestering agent pump fails, a fail signal is transmitted to the autodialer and the well pump and treatment system is shut down.

5.5 Multi-Staged Diffused Air Stripper

A multi-staged diffused air stripper is used to remove TCE and other VOCs from the groundwater. The diffused air stripper was selected over other air-stripping technologies, such as packed towers, through an evaluation conducted during the preliminary design. Although the diffused air technology is not as well established or as widely used as packed tower technology, it has increasingly been used throughout the country over the past several years for the removal of chlorinated solvents and other VOCs from drinking water. Appendix B presents several references where diffused air stripper have been used in Pennsylvania and New Jersey for both drinking-water and non-drinking-water applications. Actual treatment data are provided where available.

The diffused air stripper is specified to achieve 99.8-percent removal of TCE from a continuous influent flow of 40 gpm. At a design influent concentration of 250 /ig/L of TCE, the stripper will generate an effluent with a concentration of 0.5 /ig/L, which is one order of magnitude below the MCL. The specified system includes three 2-horsepower blowers, only two of which will operate at any one time to achieve the required removal rates. The third blower will be used as a backup or in the event that influent concentrations or flow rates increase.

The stripper unit, which has a maximum hydraulic capacity of 150 gpm (although with a much lower removal rate), is mounted on a platform 4 feet above the building floor. The platform is accessible to operating personnel and provides a working area for inspecting and performing maintenance on the unit. The three blowers and the 600-gallon effluent tank, are located beneath the platform. The intake for the three air stripper blowers is located outside the building and is equipped with an inlet filter. Contaminated off-gas from the air stripper is treated with vapor-phase carbon prior to being discharged to the atmosphere. Treated effluent from the air stripper • discharges into the effluent tank.

The diffused air stripper system is equipped with safeguards and alarms to prevent disruptions in treatment effectiveness and equipment damage. These are listed below. All of the items listed will shut down the supply well and treatment system and transmit an aeration system fail signal to the autodialier.

5"7 • Air stripper unit high or low pressure • Air stripper blower failure • Blower discharge high or low pressure • Air stripper off-gas high or low pressure Set points for the alarms listed above will be determined by the manufacturer.

5.6 Off-Gas Treatment System

Off-gas from the diffused air stripper is heated in an inline duct heater to reduce the relative humidity and then is treated to remove TCE and other VOCs in a 500-pound, vapor-phase carbon adsorption unit. A 2-horsepower blower is required to transfer the off- gas through the heater and carbon unit. The off-gas treatment system is sized to handle a maximum air flow rate of 400 cfm. The adsorption unit is sized for a 100-day useful life at the design groundwater concentration of 250 /zg/L of TCE. At the 250 /*g/L concentration, less than 0.12 pounds of TCE per day would be adsorbed by the carbon. At the initial low concentrations (less than 5 Mg/L), the TCE adsorbed would be much less and the replacement period will be significantly longer. Effluent air from the carbon unit will be tested periodically for TCE, PCE, and vinyl chloride. The frequency of testing will be determined by the estimated carbon life which will be calculated on the basis of actual concentrations of VOCs in the supply water (see Section 5.15). If TCE is detected in the adsorber exhaust then the carbon will be replaced. The off-gas piping is configured to allow replacement of carbon canisters without shutting down the system.

The operation of the electric resistance-type duct heater is controlled by a differential temperature -controller. The controller receives temperature inputs from thermocouples placed in the heater inlet and discharge lines. * An off-gas system fail alarm will be transmitted to the autodialer and will initiate shutdown of the well pump and treatment system if any of the conditions listed below exist.

• Off-gas blower fail • Off-gas blower low suction pressure • Off-gas blower high discharge pressure • Inline duct heater discharge high temperature • Inline duct heater low temperature differential

Shutdown pressures and temperatures for the off-gas equipment are specified in the equipment specifications.

5.7 Effluent Tank and Booster Pump

Treated water from the air stripper flows into a 600-gallon effluent tank that serves as a wet well for the booster pump. A 15-horsepower horizonal centrifugal booster pump is

5-8 used to increase the pressure of the air stripper effluent from atmospheric pressure to distribution-system pressure.

The supply-well pump is sized at 40 gpm, as discussed earlier in this section. The booster pump is sized for a 60-gpm flow to ensure that the well pump will not exceed the capacity of the booster pump. The excess capacity of the booster pump causes the pump to cycle on and off four times per hour, which is less than the maximum number recommended (10 per hour) for the pump. The booster pump is controlled by the water level in the stripper effluent tank. When the water level in the tank falls below 1 foot (50 gallons), the booster pump shuts off. When the tank level reaches 2.5 feet (560 gallons) the booster pump turns on. The effluent tank is also equipped with a high level alarm (2.75 feet) that will shut down the well pump and send an aeration system fail signal to the autodialer. A failure of the booster pump will cause a system shutdown and send a pump fail signal the autodialer.

5.8 Chlorination System

Disinfection of the treated water is accomplished through chlorination using sodium hypochlorite solution. Sodium hypochlorite solution (12.5 percent by weight) will be pumped into the discharge line of the booster pump, using a chemical metering pump. The dosage can be adjusted by manually changing the stroke length of the metering pump. The solution feed rate is flow-paced to the booster pump flow. The hypochlorite feed system is interlocked with the rest of the treatment system to operate only when the treated-effluent booster pump is running. The system is designed to feed hypochlorite solution at an average rate of 0.5 pounds (free chlorine) per day to achieve an average initial free chlorine concentration of 1.0 mg/L and a residual of 0.5 mg/L. The maximum sodium hypochlorite solution feed rate is 1.44 pounds (free chlorine) per day which would achieve an initial concentration of 3.0 mg/L and a residual of 2.0 mg/L. The chlorine feed rate can be adjusted manually at the Chlorinator. The required chlorine contact time is provided in a 51-foot-long section of 24-inch-diameter pipe between the treatment facility and the first public connection in the distribution system (the Dublin Village Plaza shopping center). A 3/4-inch return line from the end of the contact line to the sink in the treatment building allows operating personnel to sample the finished drinking water for chlorine residual and also provides a source of potable water for the facility.

Sodium hypochlorite solution is provided in 55-gallon storage drums. Typically, one drum will be stored in the building within a containment tub. The drum is stored on a scale which indicates the weight of the solutin in the drum. One sodium hypochlorite metering pump transfers the hypochlorite in the drum to the discharge pipe of the booster pump. The metering pump is flow-paced to the booster pump flow and is interlocked with the operation of the booster pump (i.e., the metering pump is ON only when the booster pump is ON). The metering pump is provided with valves for calibration and venting. Safety features include a relief line back to the storage dum and a flow indicator to enable the

AR00005 operator to check if the metering pump is pumping solution, thereby preventing a discharge of nonchlorinated water. The weigh scale for the storage drum also confirms that the expected hypochlorite usage has occurred.

5.9 Autodialer Alarm System Under normal operating conditions, the proposed treatment facility is unattended. To notify operating personnel of potential problems, the facility is equipped with an extensive autodialer alarm system. The autodialer alarm system receives alarm signals from the process instrumentation designed into the facility and automatically transmits specific alarm messages to operating personnel over the telephone, either to a specific extension or to a pager system. The autodialer is equipped with a battery power backup and in the event of a power outage the autodialer will transmit a power fail alarm to operating personnel. The alarms that are transmitted to the autodialer are discussed under sections above for each equipment system and also are summarized below.

• Supply well pump fail • Sequestering agent tank low level • Sequestering agent pump fail • Aeration system fail • Off-gas system fail • Pump fail (booster pump or sodium hypochlorite pump) • Facility sump high level • Power fail

5.10 Building and Site Features 5.10.1 Building Layout

The mechanical layout of the treatment system building is shown in plan view on Drawing M-l of the separately bound design drawings. Building construction is be similar to the well house at Well 3, using concrete masonry block on a concrete foundation and a wood frame roof. The building has two rooms, one small room for an office and a larger room for the treatment equipment. Adequate space has been included for access to the equipment for maintenance. A small laboratory bench and a utility sink is included in the office for conducting daily analytical tests and processing sample bottles. A desk and a hose connection for floor washing also are included. 5.10.2 Heating and Ventilation The building is ventilated for removing excess heat. A separate ventilation system is provided for the office. An electric duct heater and two electric unit heaters maintain a minimum temperature of 50°F in the main equipment room. The unit-heaters are connected to emergency power (see Section 5.10.4) to maintain the temperature above freezing in the event of a power failure. 5.10.3 Site Layout The site layout is shown in Drawing C-l of the separately bound design drawings. The proposed supply well and treatment building are located in the northern corner of the undeveloped lot located behind (northeast of) the Dublin Village Plaza shopping center at 157-161 North Main Street in Dublin. Access to the site is through the shopping center parking lot. A 12-foot-wide asphalt access road is provided off of the northeast corner of the parking lot. The access road is approximately 300 feet long and is provided with an area for a pickup truck to turn around. The building, which is approximately 51 feet by 23 feet and 12 feet tall at the eaves, is offset 25 feet from the nearest property line. The proposed production well is 20 feet northeast of the building. 5.10.4 Site Utilities

Electric Power. Table 5-2 presents the horsepower requirements for the supply and treatment system equipment. Electrical power supplied to the site is 400 amps at 240 volts. Power is provided by a new buried line from North Main Street. A meter and transformer are provided. The transformer is located outdoors on a concrete pad to the southwest of the treatment building. Emergency power is provided by a 45-kW emergency generator. The generator is on a concrete pad in a fenced area outside the north side of the building. The emergency generator is hardwired to the system and will switch on automatically in the event of a power failure. Potable Water. Potable water is provided through a 3/4-inch diameter supply pipe fed frpm the end of the chlorine contact line. Potable water is connected to the utility sink and a hose connection. Sewer Connection. A floor drain, the overflow and drain from the sequestering agent tank, and the utility sink discharge to the facility sump. The sump is equipped with a submersible pump which discharges to tthe sanitary sewer. The sump pump discharge line runs behind the shopping center (see Drawing C-3) and discharges into the sewer main on North Main Street. 5.10.5 Noise Abatement

Air blowers are the only source of significant sound. All blowers are contained within the building. A sound enclosure is provided for the off-gas blower to limit the noise level to 85 dBA at 3 feet, the OSHA limit.

5-11 Table 5-2 ELECTRICAL REQUIREMENTS Equipment Item Connected Estimated Annual Horsepower Average Operating Horsepower Well Pump (M-l) 3 3 Sump Pump (M-2) 0.4 0.4 Aeration Blower (M-3) 2 2 Aeration Blower (M-4) 2 2 Aeration Blower (M-5) 2 2 Off-Gas Blower (M-8) 2 0 Air Heater (M-9) 5 (4 kW) 3 Booster Pump (M-ll) 15 15 Chlorine Injection Pump (M-l 2) 0.03 0.03 Sequestering Agent Mixer (M-10) 0.33 0 Sequestering Agent Pump (P-15) 0.03 (0.02 kW) 0.03 (0.02 kW) Heating and Ventilation 44 (33 kW) 9 (7 kW) Total 76 36

WDCR768/031.WP5 5.11 Operational Tie-in to the Borough's Existing System The proposed supply well will operate 24 hours per day at a rate of 40 gpm. Existing wells 1 and 3 will be used to meet Borough water demands in excess of the pumping rate of the proposed supply well. The future water supply demands for wells 1 and 3 should be equal to the current demands for the two wells. Timed run cycles of the existing well pumps may need to be adjusted to allow the constant operation of the proposed supply well without overfilling the storage tank. For preventing storage tank overflow in emergencies, a high-pressure shutdown switch (similar to Well 3) will be used to shut down the proposed supply-well pump and treatment system. After shutdown of the treatment system, low pressure in the distribution system will automatically restart the proposed supply-well pump and the treatment system. The setpoints for the pressure switches on the proposed system and Well 3 will be adjusted to keep the proposed system operating in preference to Well 3. On/off pressure settings for the proposed well and Well 3 are specified in the design documents and will be finalized during facility startup.

5.12 Emergency Provisions The proposed supply well and treatment facility is designed to operate at a constant rate on a 24-hours-per-day basis. The reason for this is to provide the added benefit of containing the northern portion of the TCE plume to the greatest degree possible. The supply well and treatment facility have been provided with a number of emergency provisions to minimize downtime in the event of a power failure or mechanical failure. The primary emergency provision is an autodialer alarm system which will notify the operating personnel in the event of any failure that results in the automatic shut down of the system (see Section 5.9). The facility is equipped with shelf spares of most major pumps and other mechanical equipment. In the event of a mechanical breakdown it is realistic to expect that the equipment can be replaced or repaired within 24 to 48-hours. The facility is also equipped with an emergency generator (see Section 5.10.1). In the event' of a power failure the system will automatically switch over to the emergency generator and will notify the operator of the switch through the autodialer system. Based on data collected from the pumping test on the well, a shutdown of several days or even several weeks would not be expected to have any adverse affect on the containment of the contaminated groundwater. In the unlikely event that the treatment system will have to be shut down for an extended period of time, the system is designed so that the supply well can be operated as an extraction well and the extracted water can be discharged directly to the Borough's sanitary sewer system rather than the water distribution system. Arrangements would have to be made with the Borough's wastewater treatment plant for this type of discharge to determine their capacity to treat the expected flow rate on a temporary basis.

5-13 During short or extended shutdowns, drinking water would be supplied by increased pumping of Borough Well Number 3 and, if necessary, through the emergency connection with the Bedminister Township public water supply.

5.13 Operation and Maintenance An operation and maintenance manual will be prepared and submitted to the owner/ operator at least 30 days prior to start-up of the facility. The manual will present detailed operation and maintenance procedures for each item of equipment in the water supply and treatment system. The information provided for each item of equipment will include: • A description of the unit and component parts • Operating procedures • Maintenance and overhaul procedures • Installation instructions • Original manufacturer's parts list • Detailed assembly drawings • Electrical relay settings, and control and alarm settings • Circuit directories for panelboards • As-installed wiring diagrams

All warranties on parts and equipment will be transferred from the contractor to the owner upon startup.

5.14 Facility Startup

Prior to being placed into continuous operation, the completed facility will undergo a testing and startup period. The purpose of this period will be to insure that each individual equipment item and the system as a whole is operating according to the plans and specifications. An equipment testing plan will be submitted 14 days prior to the start of testing. A facility startup plan will be submitted 21 days prior to startup activities. Testing activities will consist of cleaning and checking the equipment, performing functional tests on each item of equipment, and conducting performance tests on each system. Facility startup will consist of an extended, full scale test of the entire facility under operating conditions. During startup testing, treated effluent from the facility will be discharged to the sanitary sewer.

5.15 Operator Training The training of operations personnel will be conducted during equipment installation, testing and startup activities. A training plan and schedule will be prepared and submitted

5-14 to the Borough within 60 days after notice to proceed. Training will be conducted by representatives of the equipment manufacturers, the construction subcontractor, and the construction engineer.

5.16 Treatment System Monitoring

The performance of the treatment system will be monitored by regular sampling and analyses of water and off-gas emissions. The treatment system monitoring plan is presented in Appendix C. A quality assurance project plan, which outlines sampling and analytical procedures, is presented in Appendix D.

5.17 Drought Contingency Plan

The Borough's existing drought contingency plan for wells 1, 2, and 3 is presented in Appendix E. The existing plan will be modified to incorporate the proposed supply well. The modified plan will identify pumping levels in the proposed supply well which will trigger the various stages of response: Stage I—drought watch, Stage II—drought warning, and Stage III—drought emergency.

Trigger levels will be set after the well has been reamed out and deepened and normal drawdowns have been established. Preliminary levels will be established during the startup period.

The allowable 7-day average withdrawal rates for each stage will be: • Normal - 78 gpd/capita or 57,000 gpd • Stage I - 57 gpd/capita or 41,600 gpd • Stage II - 47 gpd/capita or 34,300 gpd • Stage III - 38 gpd/capita or 27,800 gpd During drought stages the proposed well will continue to pump 24-hours per day but at a reduced rate that corresponds to the average daily withdrawal allowance.

5.18 Water Conservation Program

The Borough of Dublin is located within the groundwater protected area of southeastern Pennsylvania and is therefore required to implement specific water conservation measures as directed by PaDER and the DRBC. These water conservation measures include:

• A leakage control program for monitoring, prevention, and immediate repair of leakage

5-15 AR000057 • Water conservation performance standards for plumbing fixtures and fittings The Borough has implemented a number of ordinances to meet these requirer.--nts for their existing system. Copies of the Borough's water use regulations and conservation measures are presented in Appendix F. The proposed well and treatment facility will be incorporated into the Borough's existing system, and will be covered under the Borough's current program.

WDCR845/009.WP5

5-16 ^000058 Section 6.0 Proposed House Connections, Carbon Filter Removal, and Well Abandonment

This section describes the activities that will be performed at each of the affected and potentially-affected properties during hookup to the public water system. These activities consist of: • Installation of the house connection, including piping, isolation valves, the pressure-reducing valve, and the water meter • Disconnection, removal, and disposal of the carbon filter units (if present) • Abandonment of the private well(s)

Seventy-one properties are scheduled to be hooked up to the public water system under the OU-1 remedial action. Sixty-nine properties were initially identified in the ROD as being affected or potentially affected by the TCE plume. Two of these properties, 147 Elephant Road and 150 North Main Street, are vacant lots and do not have buildings to hook up or wells to abandon. One property, 141 Elephant Road, was hooked up in 1992 at the owners expense when the property was sold; this is a requirement of Dublin Borough. Five properties have since been added to the hook-up list presented in the ROD. These five properties were not added because of their potential to be impacted by the TCE plume, but because of their proximity to the proposed production well. The 48-hour pumping test indicated that the wells supplying the five properties will or may be adversely impacted by the long-term operation of the proposed production well. The properties are 162, 166, 168, 172, and 174 Elephant Road. The well at 162 Elephant Road is within 450 feet of the proposed supply well and was drawn down well below the supply pump intake during the 48-hour pumping test. The other four wells were not monitored during the pumping tests and experienced no reported interruption of service, however they are in close proximity to the proposed supply well (within 800 feet) and within 500 feet of the well at 162 Elephant Road. All five of the properties are already provided with service stubs off of the existing water main in Elephant Road. The locations of all properties to be hooked up to public water are shown in Figure 6-1.

6.1 Installation of House Connections

The work currently being performed by others under the first phase of the OU-1 activities includes the design and construction of each water lateral from the water main to the point at which it enters the building's basement. If the building does not have a basement, the lateral will have been constructed to the location of the existing well. Under the second phase (this phase) of the work, the connection of the water lateral from the point just inside

6-1 ^000059 BEDMINSTER BOSOUCH

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LEGEND Existing Monitoring Well Properties Currently Receiving Public Water Properties Scheduled to Receive Public Water UD Undeveloped Property

Free (of Base Map): Geraghty & Miller, Inc. . | | |__| | peet Figure 6-1 AFFECTED AND POTENTIALLY AFFECTED PROPERTIES FOR OU-1 REMEDIAL ACTION Dublin TCE Site Dublin, Pennsylvania the basement wall, or at the existing supply well, to the building's plumbing system will be completed. This work includes installing a pressure-reducing valve, a water meter, a meter register, and all necessary piping. House connections will not be completed until the proposed supply well is in operation. The expectation is that two general types of hookups will be required, depending on whether the structure to be connected has a basement. For buildings with basements, the new laterals have been installed through the basement wall. Water meters and pressure- reducing valves will be installed in the basement in accordance with Borough of Dublin Standard Specifications for Water System Construction, sections 307e and f, and the existing pressure-control tank and carbon filter units, if any, will be bypassed and removed. (See Detail 111 on Drawing C-5 of the separately bound design drawings.) The meter register will be installed on an outside wall of the building.

For buildings without basements, the new lateral will be connected to the- existing discharge line from the well. The connection will be made outdoors and below grade to eliminate the need for a new floor-slab penetration. If the existing piping from the well to the building is in poor condition it will be replaced to the extent necessary. Additional plumbing will then be required inside the building's utility room to bypass the pressure- control tank and the carbon filter units, if any, and install the meter, valves, and register (see Detail 110 on Drawing C-5 of the design drawings). In four instances, complete service connections will be constructed from the property line to the building basement under this phase of the work. The four properties are 166, 168, 172, and 174 Elephant Road. The properties currently are provided with 3/4-inch lateral tees and curb stops off of the existing water main on Elephant Road. Table 6-1 summarizes all properties to be connected to the proposed system and indicates what types of connection will be required at each.

Disconnected plumbing equipment such as the pressure-control tank, valves, and piping will remain the property of the resident. Disconnected carbon filter units are discussed in Section 6.2.

6.2 Removal and Disposal of Carbon Filters

Many of the residents and businesses to be hooked up to the public water supply system under this plan currently use activated carbon filter systems to treat water from their private wells. Two general types of carbon filter systems are being used: point-of-entry (POE) filters and point-of-use (POU) filters. POE filters treat the water at the point at which it enters the building's plumbing system. A POE filter system generally consists of two 2-cubic-foot fiberglass or steel canisters of activated carbon connected in series. POE filter canisters are typically located in the building's basement or utility room, next to the

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(N (N PM (N (N 2-029-0 0 2-0280 0 Uj O. Z CO O. H 2 ^ system's pressure-control tank. POU filters are smaller filters that are located at specific use areas in the plumbing system, such as sinks and drinking fountains. Semiannual sampling and maintenance records indicate that 33 POE filter systems are being used at the affected residences and businesses and that six other businesses rely on POU filters. Table 6-2 presents a summary of the types of filter systems used at each of the affected residences and businesses.

Although most of the carbon filter systems have been supplied and installed by the PRP, 10 home and business owners have furnished and installed their own systems. The under- standing is, however, that the PRP performs semiannual monitoring and maintenance on all of the 39 filter systems identified in Table 6-2. The Whistlewood Apartments treat the water from their well with an air-stripping tower. The treatment system is owned, operated, and maintained by Whistlewood. When the proposed supply well, treatment facility, and water-distribution system become operational and the affected residences and businesses are connected, the use of carbon filters or other treatment systems will no longer be necessary. The filters and treatment systems will no longer be maintained and monitored by the PRP or EPA. The used carbon filters will be disconnected from the water supply system and disposed of properly, as discussed below:

• The work to be preformed during the second phase of the OU-1 remedial action will consist solely of disconnecting the carbon canisters from the plumbing system and draining the water from them as each building is hooked up to the public water system. Water in the carbon units will be assumed to be uncontaminated and will be drained to the sanitary sewer system. If the carbon filters are owned by the resident and the resident specifically requests to keep them online, they will not be disconnected. • The disconnected canisters owned by the PRP will be collected from each residence and business by a representative of the PRP. • Filter canisters owned by the home or business owner will be replaced by the PRP with unused filters unless other arrangements are agreed to by the owner and the PRP. The maintenance of these filters will then become the responsibility of the owner.

• The PRP will be responsible for the proper disposal of all used carbon filters.

• Filter-system equipment originally provided by the PRP, such as empty canisters and piping, will remain the property of the PRP.

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6.3 Abandonment of Private Wells

Each of the residences or businesses to be hooked up to the public water supply system under this plan currently is supplied with water from one or more private wells on or near the property. A summary of the private supply wells located on and servicing the affected properties is presented hi Table 6-3. After each property is connected to the public system, the private well(s) servicing that property will be permanently abandoned. Abandonment will be done in accordance with PaDER regulations and the procedures established by the American Water Works Association in AWWA A100-84, Section 13. In general, well-abandonment procedures consist of the following: • Removal and decontamination (if necessary) of the pump and discharge line. The decontaminated pump will remain the property of the well owner to dispose of as the owner sees fit. The piping and electrical cable will be disposed of for the property owner.

• Removal of the well casing, if possible, or cutting off the casing 2 feet below the ground surface.

• Completely filling the well with cement-bentonite grout to within 5 feet of the ground surface.

The purpose of permanent well abandonment is to accomplish the following: • Eliminate the physical hazard of the well hole. • Eliminate a path of contamination to the groundwater. • Conserve the yield and the hydrostatic head of the aquifer.

• Prevent intermingling between fracture zones of desirable and undesirable water. Each of the private supply wells to be permanently abandoned are identified'in Table 6-3. There are circumstances under which wells will not be abandoned: 1. The owners may continue to use their wells for nonconsumptive purposes in certain limited cases if the use is permitted by the Borough, PaDER, and EPA.

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^000078 2. The well may be converted to a monitoring well or an extraction well for use in future investigative or remedial actions by the PRJP or EPA if permitted by the property owner. Seventy-eight wells have been identified for abandonment. Currently, no wells have been identified for continued use as supply or monitoring wells. If any private well within the new area of service is to be kept in service for nonconsumptive purposes, it will be physically and permanently separated from the property's potable water supply.

WDCR845/010.WP5

4*000079 Section 7.0 Construction Cost Estimate

The construction cost estimate for the groundwater treatment system is presented in the Table 7-1 (EPA Region III and PaDER, Bureau of Waste Management only). The estimate is presented by specification section and was developed on the basis of detailed take-offs, except for general conditions, finishes, electrical, miscellaneous civil and mechanical work, and instrumentation and control. The estimate is expected to be accurate to within +15 percent to -10 percent. All costs are presented hi first quarter 1995 dollars. The estimate must be escalated to the midpoint of construction to estimate the contracted bid amount. The estimate assumes that the project will be constructed on a normal schedule. The estimate does not include an allowance for change orders. The estimate is based on average United States labor and material rates and has not been adjusted for local costs or competitive market conditions.

WDCR848/004.WP5

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»'•- ! i i{ iles s -~ IJ am -i? ifih B- S Sfst- ftAb S^.K,ft ^^Vbb fc < W B U K, slise 5tflii ^000085 Section 8.0 Construction Schedule

An estimated schedule for the construction of the water treatment system is presented in Figure 8-1 (EPA Region III and PaDER Bureau of Waste Management only). The schedule is presented as an ordinal schedule and is not tied into any start date. The schedule commences at the time the construction contractor is given notice-to-proceed and therefore does not include bidding and contract-award activities. The schedule also assumes that each activity will be conducted by a single construction crew and that no significant weather delays are encountered.

WDCR848/021.WP5

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CH2M HILL Inc. 1993a. Memorandum to Dianne Walker, Well Siting Evaluation, Dublin TCE Site. January 12, 1993.

CH2M HILL Inc. 1994a. Hydrogeologic Report of the Proposed Supply Well, Operable Unit 1, Dublin TCE Site, Dublin, Pennsylvania. January 1994.

Cowan Associates, Inc. D-1989a. Drawings for: Dublin Wellhouse Well #3. Sheets 1 and 2 of 6. August 21, 1989. Cowan Associates, Inc. D-1989b. Drawing For: Elephant Road Water Distribution Line, Dublin Borough. Sheet 2 of 4. December 14, 1989. Delaware River Basin Commission. 1980. Ground Water Protected Area Regulations, Southeastern Pennsylvania. October 8, 1980.

Delaware River Basin Commission. 1991. Delaware River Basin Water Code. June 1991.

Dublin Borough. 1989a. Standard Specifications for Water System Construction. January 1989.

Dublin Borough. 1989b. Dublin Borough Ordinance No. 183, An Ordinance Amending the Dublin Borough Zoning Ordinance Removing Restrictions on Dublin Borough or Dublin Borough Authority-Owned Public Utility Facilities. June 5, 1989.

Dublin Borough. 1990a. Standard Specifications for Sanitary Sewer Construction. May 29, 1990.

Dublin Borough. 1990b. Dublin Borough Ordinance No. 200, An Ordinance Superseding Ordinance 145 Regarding Standards and Procedures for Well Drilling and Well Construction, and Setting Further Standards and Procedures for Utility Construction, and for Excavations and Repairs In, and For Private Connections to Streets and Rights of Way. August 6, 1990.

Mercuri and Associates, Inc. 1990. Report-TCE Monitoring Well, Dublin Borough, Dublin, Bucks County, Pennsylvania. August 1990.

Pennsylvania Department of Environmental Resources (PaDER). 1984a. Water Supply Instructions ER BCEC 254:5/84.

Pennsylvania Department of Environmental Resources (PaDER). 1986b. Public Water Supply Manual, Part II, Community Design Standards. September 1986.

R-] AROOOO'89 United States Environmental Protection Agency (USEPA). 199la. Dublin TCE Site, Focused Feasibility Study for Alternate Water Supply, Interim Final Report. August 6, 1991.

United States Environmental Protection Agency (USEPA). 1991b. Dublin TCE Site, Record of Decision. December 30, 1991.

United States Environmental Protection Agency (USEPA). 1992. Scope of Work for Remedial Design of Operable Unit One at the Dublin TCE Site. April 1992.

WDCR846/013.WP5

AROOOQ9Q Appendix A Laboratory Analytical Data Water Quality Samples

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~~ro i «i s^ ^i ^c ^c ^ CM CO X. . I—I LUO.LUQ.Uia.LlJCL. a^i—4lt o a^c US CzujzuiztuzuJ •• CJ •« U MI CJ •j•~~

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pC ZZ._Zl ' Wz LzU Owoct o-— o1 CotOo ~ * —I — ^•oc-O - -l-a -. .4 _ — I LU LUOOI-IOHHOH.Ol-4 _ ozo. "tocooctocctnoitncc a a CC i—i CD LUrDI-4LU>—---Z>-Z>-Z>-Z>coi-iQ-i-«cei-— OH- Ol— O z oeocc LU _j i— oet— ex. t— cc i— a: 5OO»-ILU :CO-OOOO

~~u§! s _ _ s! —i S CM e> " "* ^ S i i §c !? < o; cc Science and Engineering Center The Pennsylvania State University University Park, PA 16802-2301~~

Tue, Jan 18, 1994 Q.C Incorporated 1205 industrial Highway Southampton, PA 18966 Attn. Jean Dascoli Dear Ms. Dascoli: We have analyzed your water sample for gross alpha radioactivity. The analysis was performed using a Pennsylvania DER approved method outlined in Interim Radiochemical Methodology for Drinking Water (EPA-600/4-75-008 Revised). The result, along with appropriate two-sigma counting error, is listed below: Sample Number: 094528 Supplier's Name: CH2M Hill Collection Location: Ground Water Collection Date: November 19,1993 at 10:00 a.m. Analysis Results: 17.0 ± 3.5 picocuries per liter gross alpha Your sample has not met the monitoring requirements of the Safe Drinking Water Regulations of the Pennsylvania Department of Environmental Resources. These regulations state that gross alpha results should be less than 5 picocuries per liter. Samples collected to comply with Safe Drinking Water Regulations whose gross alpha concentration exceeds 5 picocuries per liter must be tested for radium-226 and radium-228. Your sample exceeds this check limit; if you would like us to perform a radium assay on your sample, please notify us by February 28,1994. This is the scheduled disposal date for ycur sampie. If this result is to be reported to satisfy the Safe Drinking Water Regulations of the PA DER, a PWS name and 7-digit identification number are needed in order for an SDWA-4 form to be completed. Please contact us at (814) 863-2647 if you have any questions regarding this analysis, or if we can be of any further service to you.

~~Sincerely yours,~~

~~William A. Jester, Ph.D. Technical Supervisor~~

An Equal Opportunity University (814)865-6351 PENNSTATE FAX: (814) 863-4840 College of Engineering Breazeale Nuclear Reactor Building Radiation Science and Engineering Center The Pennsylvania State University University Park, PA 16802-2301

Tue, Jan 18, 1994 Q.C Incorporated 1205 Industrial Highway Southampton, PA 18966 Attn. Jean Dascoli Dear Ms. Dascoli: We have analyzed your water sample for gross alpha radioactivity. The analysis was performed using a Pennsylvania DER approved method outlined in Interim Radiochemical Methodology for Drinking Water (EPA-600/4-75-008 Revised). The result, along with appropriate two-sigma counting error, is listed below: Sample Number: 094529 Supplier's Name: CH2M Hill Collection Location: Ground Water Collection Date: November 19,1993 at 10:00 a.m. Analysis Results: 21.6 ± 4.3 picocuries per liter gross alpha Your sample has aclmet the monitoring requirements of the Safe Drinking Water Regulations of the Pennsylvania Department of Environmental Resources. These regulations state that gross alpha results should be less than 5 picocuries per liter. Samples collected to comply with Safe Drinking Water Regulations whose gross alpha concentration exceeds 5 picocuries per liter must be tested for radium-226 and radium-228. Your sample exceeds this check limit; if you would like us to perform a radium assay on your sample, please notify us by February 28,1994. This is the scheduled disposal date for your sample. If this result is to be reported to satisfy the Safe Drinking Water Regulations of the PA DER, a PWS name and 7-digit identification number are needed in order for an SDWA-4 form to be completed. Please contact us at (814) 863-2647 if you have any questions regarding this analysis, or if we can be of any further service to you. Sincerelcj.y yoursa , William A. Jester, Ph.D. Technical Supervisor

An Equal Opportunity University fl R f) fl H I H Q (814)865-6351 STATE FAX: (814) 863-4840 College of Engineering Breazeale Nuclear Reactor Building Radiation Science and Engineering Center The Pennsylvania State University • University Park, PA 16802-2301

~~March 18, 1994 Q.C. Incorporated 1205 Industrial Highway Southampton, PA 18966~~

Dear Ms. Dascoli: We have analyzed your water sample for radium-226 and radium-228. These analyses were performed using Pennsylvania DER approved techniques described in Interim Radiochemical Methodology for Drinking Water (EPA-600/4-75-008 Revised). The result, along with two- sigma counting errors, is listed below:

Sample Number ' 094528 Supplier's Name: CH2M Hill Sampling Location: Ground Water Collection Date: November 19, 1994 @ 10:00 a.m. Analysis Results: 2.18 ± 0.10 picocuries per liter radium 226 2.4 ± 0.7 picocuries per liter radium 228

Your sample has met the monitoring requirements of the Safe Drinking Water Regulations of PA Department of Environmental Resources which states that the combined Radium 226 and 228 results should be less than 5 picocuries per liter. Please contact us at 814-863-2647 if you have any questions regarding this analysis, or if we can be of any further service to you.

~~Sincerely yours, '~~

~~William A. Jester, Ph. D. Technical Supervisor I";~~

~~V- —* \\»~~

An Equal Opportunity University AROOO (814)865-6351 °ENNSTATE FAX: (814) 863-4840 College of Engineering Breazeale Nuclear Reactor Building Radiation Science and Engineering Center The Pennsylvania State University University Park, PA 16802-2301

~~March 18, 1994 Q.C. Incorporated 1205 Industrial Highway Southampton, PA 18966~~

Dear Ms. Dascoli: We have analyzed your water sample for and radium-228. The analyses were performed using Pennsylvania DER approved techniques described in Interim Radiochemical Methodology for Drinking Water (EPA-600/4-75-008 Revised). The results, along with two-sigma counting errors, are listed below:

Sample Number 094529 Supplier's Name: CH2M Hill Sampling Location: Ground Water Collection Date: November 19, 1994 @ 10:00 a.m. Analysis Results: 0.62 ± 0.05 picocuries per liter radium 226 2.4 ± .0.5 picocuries per liter radium 228

~~' Sincerely yours,~~

~~William A. Jester, Ph. D. .Technical Supervisor~~

An Equal Opportunity University AROOOI05 C or¥_mo n «-*»«* *•» X t:H o 'f V* •» n n c&y 2. v an o JL ca 13 u t~ *» e» u o -I* Leitaior-eatror-JlcrcK ft.ei d JL e* 1= 3. o n M«e*i»»at»jir-«a'fn«»n"t:«» £3 *» cs •t; i o n ratory Number t 42286 Sample Number : 094629 Collection Time : IQtOO Received : 02/22/94 Collection Date : 11/19/93 fo<|)<|iA

~~Establishment Caee Facility - LOW LEVEL RAD HON LAB NONPWS CH2M HILL County Municipality Program NOT GIVEN RESTON VA NON-PUS~~

~~Collector's Name Collector's Phone - Sample Type QC INC, 216-388-3900 Water Bureau or Agency Region Air Volume MISC N/A NOT GIVEN~~

~~T e f t s R e q itenf ted t Uranium~~

* — A sample value Le an observed reading of a sample's radioactivity on a given date and time. * - The Lowest Level, of Detection { LLO } is the minimum sample value that can be detected with 96% confidence. * - The Counting Error { CE } is a factor that when added to and subtracted from a sample value* defines a range that will with 95% confidence encompass the actual cample value.

~~RECEIVED APi. i 5 1994 CSH8I-I H«"k - WDC~~

~~5ROOOI06 R d el JL m t JL o n A n *» JL y c* £. es R «* «ss u i. 1C «s Laboratory Number t 42285 . Sample Number t 094B29~~

~~Unless otherwise noted all values reported are picocuries per liter 96% LLD Sample Value 96% CE~~

~~U ** 0.06 fJtg/l 10.38 ftq/1 ——————~~

~~- This symbol indicates the reported sample value is lower than its corresponding lowest limit of detection.~~

~~Printing Date : 03-2&-1994 Reviewed By r ^~~

~~t;/, f/*/~~

~~fiROUOiO? C. ommo r-w*« m JL *:H o-f5 R«s»i^r»«*y_I.V''air_.i.«i 13 u r~ «» e» 1-1 o -f l_«fc>or-ait=ot-.i.<»«3! ** «d J- c* "t: i » mi M *» «a «* u t~ w m «r n t?~~

~~Establishment Cace Facility LOW LEVEL RAD MON LAB NONPWS CH2M HILL~~

~~County Municipality Program NOT GIVEN RESTON VA NON-PWS Collector's Name Collector's Phone Sample Type QC INC. 21&-388-3900 Water Bureau or Agency Region Air Volume MISC N/A NOT GIVEN~~

~~Tests Roouycted i Uranium~~

- A sample value is an observed reading of a sample's radioactivity on a given date and time. - The Lowest Level of Detection { LLD } is the minimum sample value that can be detected with 95% confidence. - The Counting Error £ CE } is a factor that when added to and subtracted from a sample value, defines a range that will with 96% confidence encompass the actual sample value.

~~^000/08 RacdlA.Mtri.on &,nta£.y~~

~~Unless otherwise noted all values reported are picocuries per liter 96% LLD Sample Value 96% CE~~

~~N*t u ** O.Q6 ftg/l 11.28~~

~~- This symbol indicates the reported sample value is lower than its corresponding lowest limit of detection.~~

~~Printing Date t 03-25-1994 Reviewed By t~~

1ROOOI09 &P.:»»A"tiL^i<: ~~"i ;,-..-;-.>-*: v5-'*--. -tA-V ^J.SiC.-"^Ki ' 1205 Industrial Highway •':^ .^".f..^.^; ••'- " /:PjO;.Box 514•'Scwthaniton,Pennsylvania 18966-0514.-"t »; /ID.NUMBER -- * '^215)355-3900 -. I.* "-.. .^.-g^-.- -:'-- --^y '• !- ' - • ' V "'______ADDRESS

~~_£JL **f DESCRIPTION OF SAMPLES~~

~~DN ASSUMING RESPONSIBILITY FOR SAMPLE~~

~~•• •~~

~~^•-•'" V'ij,-. t*i^-*v - .* 'i-» - its. =" -^iV~~

~~'W^^aaa^i.ib^*iii*j^'a*<^..ir^.ifiiiaB5.-E»^ ,; ^ti.~~

CUSTOMER COPY **••"• •^>*^~?*^2w^?^'r-m ~ ?*--'3S'V$£L-' f •*?*!••- -r^—s?^^f• 1/fH?^ •»->»•»•*•r• '•-•». • '•••»*^• ' '-• " -i-- " Chai"•'••^ «~fn- •*"'•o-f -Custo— • - d 1205 Industrie Higtrway ' ' * . ^ : ©C '-l».O.BoxS14«Southanrip.oh/Penn8y-vania 1896&-0514 ' /T.D/tol. NUMBER (215)355-3900

~~f.Q- BC.K HMoo~~

~~SAMPLE NO. NO or CONT DESCRIPTION OF SAMPLES~~

~~r°" T •* *£**-.~~

~~rPERSON ASSUMING RESPONSIBILITY FOR SAMPLE~~

~~SAMPLE NUMBER -RELINQUISHED BY RECEIVED BY TIME DATE REASON FOR CHANGE OF CUSTODY~~

CUSTOMER COPY -.jgw-L; •- «l»».^-Ti|-^-yr^--^»H!y^-^«^^CT^---^J.^| îfeî^^^^ - '?*jlS'''">jSf? ~''**' •39^-*'*^- '"««-• '•J^W¥' " !*•"*Chai• •-*»"=• ««.n» o'•"•f" -^"Custod' "*"• ' """v| " î "";*-*' "-*li'" "-«'.' T**'.-1."' ^ • •*."'.» ";^. ' ' »•?•"•"' • '-'" '"?£*•? .--- '• - 'r\ - - sp.»W' -i,, >'-•"* -T s I*-.-*-. '~ '• •-. -V— . -' •. • ^^8 I %^ • • * %^ • ^^ •• *^ w^^ ^^ w ™.^:>-12Q!BlKlU8lital«g.l?ifv->lf^^^ ; •'• '•' ' ______* - ,,,' ;'^;, i v: ''/I.D. NUMBER jJ215) 355-3900. ^: ' OF UNIT AND ADDRESS

~~)N ASSUMING RESPONSIBILITY FOR SAMPLE~~

~~JX&SEsfelirdS&&£'£s&£tl£flii~~

~~'*i&&&&^^'-^£f'\'~f£fr'*s&&:.^.~~

~~TOMER COPY Appendix B Diffused Air Stripper System References and Performance Data~~

~~WDCR846/014.WP5/2 flROOOi 13 EQUIPMENT DATA SHEET ENGINEER:~~

~~QUANTITY:~~

~~IDENTIFICATION NO.: (Assigned by I&C Engineer)~~

~~MATERIAL ni.ni rn- or . Z.S <><=> L T2£ -4-00 Sg-Vr~~

~~MANUFACTURER; SIZE; rnNFinURATION: L-O*-^ T^y LM~J " ' <_ ^__[2^~~

~~SPECIAL CONSTRUCTION MATERIAL: ______~~

~~POWER REQUIRED: (HP, Volts, 4>) ^ ~~ "2. , & 14f~~

~~DRIVE: (Elect.,. Var. - Mech., Var. - Belt, Const. - Belt, Var. - Direct)~~

~~SPEED, RPM:______MAXIMUM:______MINIMUM: SUPPORT UTILITIES REQUIRED: (Seal Water, Comp. Air, Drains, etc.) [qty., if known] _____~~

~~gQUIPMENT WEIGHT: Z-° ^^> ______LBS. _ NOISE LEVEL ______dbA~~

~~COMMENTS, DATA AND INFORMATION: (Vibration; Equipment Pads, Types, and Sizes; Special Electrical,~~

~~Structural, etc.) ______.______~~

~~SPECIFICATION NO.: LOCATION OF EQUIPMENT: P&ID Sheet No. Construction Sheet No.~~

~~REVISIONS REVISION NO. REVISION DATE REVISION BY~~

~~™ '~~

~~3ROnn lu FORM 233 6/78 10/22/93 11:58 S919 544 8720 LOWKV HNG J.1P l£JUUo~~

~~Mufti-Staged Diffused Bubble Aeration System U.S. Patent Mo. 4663039~~

~~High Efficiency Low Maintenance Performance Guaranteed The Original Low Profile Aeration System~~

~~LOWRY* £-°- Box 14209 P.O. Box: iaa Ra3e£rehTfi8n9t8Park.NC277Q3 Unfty. ME 04938 (819) S44.ffl.SO FAX(919)544-;720 (3371 9433790 FAX (207) 9-3-2471~~

~~Engineering, inc. All Rights Resovod. .0/22/93 11:57 ©919 544 8720 LOWKi ti\G Kif~~

~~ASr Vent~~

~~Water Wet~~

~~Discharge Box~~

~~Discharge Pump Behind Blowers~~

~~Regenerative Air Blowers~~

~~TITLE: Aeration System Side View j DWG. NO: ENGINEERING DRAWN BY: MAC SCALE: 1/2 ^.'-Cf SHEET. NO: P.O. Bez 14209 SeseaaA. Ttaogli faA, NC27709-t2D9 ': JDL TT5REVISED: 10/22/93 11:59 'Oraitt S>44~~

~~Mule-Staged Diffused Bubble Aeration System DW -12 US. Patent No. -4663089~~

~~The High Efficiency, Uw Cost Solution For Radon and VOC Removal Bbwer Flexible Modular Design Flows to 150 gpm Per Module~~

~~f I \^v'LJ|[jlL_ 1 l\ j ^SrJrSjR-n c-s 7~l €— 1 B_~~

~~r | T ! ^.r-iM-J~~

DW-12 General Specifications . r v • Requires Up To 80% Less Air Number of Stages 12 Than Other Low Profile Aeration Systems Max. Water Row 150 gprn Max. Air Flow 377 cfm Shipping Weight (est) 460 ibs . Lowest Maintenance Aeration System Available Operating Weight 2,000 Ibs Water Inlet Fitting 3" PVC AiS-^9^"r Inlst Filing9 4"P!E.S.PPt4 PVC ) * Easy* Access Without Tools' Air Vent Fitting 4' -6" PVC Vessel Construction Non-corrosive High Density Polyethylene Aerator Construction PVC manifold and lateral Discharge Box instruction 316 Stainless Steel uptional Equipment Full electric controls, skids, and stands available

~~Lowry Engineemg. Inc, Research Tirangfe Park, North Carolina 319/544-9060 Unity, Maine 2Q?/I&.8-3790 0/22/93 11:59 S919 544 8720 JLUWKi KM(i Kif~~

~~ill Scale 10degrees C~~

Curves are computed for influent water at 10° C. Less air is required for higher temperatures. Generally, for every 10° C increase in influent water temperature, the A/W required may be decreased by35%- 50%. Consult Lowry Engineering for exact temperature carrecfion.

~~15 20 25 30 35 40 45 50 Air/Water~~

~~Scale 10 degrees C oo- 99- 98^ 37- 96- • DW-12 95- ———L.—— DW-6. DW-6PK J-' ' DW-'3 Z 7 10 15 20 25 30 35 40 45 50 Air/Water~~

~~Controls~~

~~Vent 4 OuUomn Optional CtearweO (Vnuepty And Uvel Probes Pmp~~

~~Ccnbn Psnd~~

~~Optional System Controls Basic controls Description Function~~

PLC-01 Programmable logic controller Provides sequencing and logic for basic and additional control features and alarms. PSH-01 High lid pressure switch Protects system from over-pressurization due to constricted vent Disables system. PSH-02 High inlet air manifold pressure switch Protects blowers from high pressure due to constricted air delivery system. Disables system. PSL-01 Low blower pressure switch Disables system, after a. time delay, should blower fall to start or produce normal operating pressure- LSH-01 High system water level switch Protects system from high water level in aeration vessel due to constricted water discharge. Disables system.

Additional controls LSL-Q1 Low dearwell level switch Initiates start-up sequence at low dearwell level setpoira on systems equipped with dearwells. .Additional switch can be provided to protect re-supply pump from low water conditions. LSH-02 High dearwell level switch Disables system at full dearwell setpotnL LSL-02 Low wd! level switch Disables system to protect well, pump from low well (By Others) level conditions on systems so equipped.

~~>R 505 Blower~~

'JMURES /lanufactured in the USA -laximum flow 160 SCFM /taximum pressure 75" WG /Jaximum vacuum £x2* Hg _ Standard motor—2.0 HP, 23O/460V-3 ph.-50/60 Hz. Blower construtdion—cast aluminum housing. •npe-Ier and cover niet and outlet internal muffling _oise level within OSHA standards Weight 82 Ibs. (37 Kg) ACCESSORIES External mufflers Slip-on flanges Intake fitters =br details see Accessories Section

~~Dther horsepower motors 575-vott and explosion-proof motors Surface treatment or plating Sinpj&phase motors •assembly s (motoriess) model; : see Remote Drive Section Die Cast Model To Be Released~~

= ' II S 12345 || i* s ____j. o PRESSURE SUCTION •» r .' -, •» AllAXURIMSUCmON , ^^ *w»rirt AA L; 80- —2000 -S)- POINT j—2DOO A-20HPOPDM*) CO ^i. 60- C-25HP.3PIMBM) —1500 -60——AABC C-iSHPpPtotsn) —1300 \ \•^.B' D-aSHPCIPtesn] NlfHZ -1000 -1000 60 Hz 1— 2- 50 Hz \ 50 Hz \ N 20- -20- -500 •* \ V 2J «J 5D BO KO 120 14O 160 180 0 20 40 60 80 100 120 140 160 _P 100 §11 75 Sll » =££ 25 •- o

~~AIRFLOW—SCFM AIRFLOW—SCFM AROOOI2Q 40/22/93 12:01 S919 544 8720 LOWR1 tiMG Kif DR505 Regenerative Blower~~

~~ROTATION~~

~~OMEMSCMS: w. MM TDLBUNCES: Xt t < •30=0.838 JOO~~

~~372)~~

Model l_CiJj=JO LtmraJ^a T0n.fc.06 TCh»U=2 H(ln.l=.oe Htromfc2 p^ £7 CXA. ON Te=C HTft. ORSOSAST2 -U7O 333 &2S 133 42S TO3 -s~^22.10 .TSPlPE TAPONXPVm. DH5DSAX72 •&SO 419 6.75 172 525 133 nHRTKiLTOK •M.7O 373 5i5 H 133 42S -OS fc^CAPAcrro. uoctfnoN ON SINGLE DR50SA3S8 1&57 398 a2S T33 4?5 IBS PHASe«»OTOJ.S C3RSOSAMS 1Z50 444 6J5 T72 S?5 133 DH5DSCQ72 V).«9 373 525 T33 •*^^ 108 SpKiiicattons subject lo cnang* wilhoai rmice. DRS^SCp.. 1634 43D 525 133 4_£ 106 •

MODEL DRSOSAS72 DR505AX72 DRS05AS86 DR505AS58 DRS05AX58 DR505CO72 OR505CD53 F'atNo. 037056 037052 036268 037055 037051 0362S1 036282 Motor EnclosursType TEFC XP TEFC TQ=C XP TSFC TEFC Motor Horsepower 2.0 2.0 2.0 2.0 2.0 2.5 2.5 Votese1 230/460 23O/460 575 115/230 115/230 23O/460 115/230 Phase 3 3 3 1 1 3 1 Requency' CHz) 60 60 60 60 60 60 •60 Insulafion Class2 F B F F B F F NEMA Rated Motor Amps 6.2/3.1 6.2/3.. 2.5 17.8/8.9 17.8/8.9 7.0f3.5 24.0/12-0 Service Factor 1.15 1.0 1.15 1.15 1.CJ 1.15 1.1S Locked Rotor Amps 35/17.5 35/17.5 14 138/69 138/69 40/20 137/64.8 Max- Blower Amps CAt Cutoff] 7.4/3.7 6-2/3.1 3.0 23/11.5 21/10.5 11.7/5.85 26.1/13,05 Recommended NEMA StarterSize O/OO 0/00 OO 1/0 1/0 0/0 1/0 \Afeiaht flbs/Kc] 82/37 107/48.5 86/39 94/43 107/48.5 95/43 95/43 Blower ymitations for Cantinuaus Duty C60 H2/50 Hz] Max. Pressure -In. of v-ater 75/65 68/65 75C60HZ) 70/62 •52/62 83/65 88/65 Max. Sucbon-l n. of wtfer 70/58 62/58 70 (60 Hz) 70/54 50/55 73/57 73/57 Mm. Rcw^Tessure-S OFM 60/0 73/15 60C60H2] 60/0 75/0 4O/0 20/0 Min. Ftow^uCiJorb-SCFM 20/0 58/0 20 (60 Hz] 10/0 75/0 0/0 0/0 'Afl3-«H^rTM

~~WDCR848/022.WP5/5 flftO-00122 Treatment System Descriptions Ridgewood, New Jersey~~

~~King Treatment Facility • Components: 1 Lowery 12-stage diffused air stripper 1 320 cfm blower~~

~~• Flow rate: 100 gpm~~

~~• Air/water ratio: 23/1~~

~~• Design removal efficiency: tetrachloroethene - 97.5% • Treatment objective: drinking water~~

~~Leigh Treatment Facility~~

~~• Components: 1 Lowery 12-stage diffused air stripper 1 360 cfm blower • Flow rate: 100 gpm • Air/water ratio: 26/1 • Design removal efficiency: tetrachloroethene -99%~~

~~• Treatment objective: drinking water~~

~~West End Treatment Facility~~

~~• Components: 3 Lowery 12-stage diffused air strippers in parallel 2 480 cfm blowers • Flow rate: 275 gpm~~

~~• Air/water ratio: 26/1 • Design removal efficiency: tetrachloroethene - 99% • Treatment objective: drinking water~~

~~WDCR848/032.WP5/1 Summary of Analytical Results Diffused Air Stripper Treatment Facilities Ridgewood, New Jersey~~

Concentration of Tetrachloroethene (ug/1) Date of Sample Influent Effluent King Treatment Facility 3-28-94 3.8 < 0.5 Leigh Treatment Facility 3-14-94 13 0.6 3-28-94 12.2 0.6 - West End Treatment Facility 2-28-94 8.0 0.5 3-14-94 11.4 0.5

~~WDCR848/029.WP5/2 AROOOI214 Treatment System Description and Performance Data Ramsey, New Jersey~~

~~WDCR848/022.WP5/6 AR000125 Treatment System Description Ramsey, New Jersey~~

~~Facility Description .~~

~~Components: 2 Lowery 12-stage diffused air strippers in parallel 3 280 cfm blowers~~

~~Flow rate: 200 gpm~~

~~Compounds removed: trichloroethene tetrachloroethene . 1,1,1 -trichloroethane Treatment objective: drinking water~~

~~WDCR848/032.WP5/2 Summary of Analytical Results Diffused Air Stripper Treatment Facility Ramsey, New Jersey~~

Trichloroethene Tetrachlorothene 1,1, 1-Trichloroethane (Mg/L) (Mg/L) (Mg/L) Date of Sample Influent Effluent Influent Effluent Influent Effluent 4-29-93 0.66 0.17 J 0.45 0.15 J 0.78 0.40 5-5-93 1.11 0.30 J 1.03 0.24 J 0.55 ND 5-6-93 1.04 0.28 J 1.31 0.25 J 0.58 ND 5-17-93 1.07 0.40 1.52 0.50 0.58 0.21 6-2-93 0.92 ND 1.08 ND 0.51 ND 6-14-93 0.94 0.34 1.17 ND 0.55 ND 7-13-93 0.15 J ND 0.13 ND 0.19 J ND 7-19-93 0.16 J ND 0.23 J ND 0.16 J ND 8-17-93 0.49 0.12 J 0.61 0.12 J ND ND 9-15-93 0.78 0.21 J 0.92 0.20 J 0.72 0.22 10-4-93 0.96 0.16 J 1.19 ND 1.10 ND Detection Limit 0.32 0.32 0.33 0.33 0.12 0.12 J - Indicates an estimated value. Less than the detection limit but could be greater than zero. ND - Compound not detected.

~~WDCR848/029.WP5/I Treatment System Description and Performance Data Raymark Superfund Site Hatboro, Pennsylvania~~

~~fl ROOD 128 Treatment System Description Raymark Superfund Site Hatboro, Pennsylvania~~

~~Facility Description • Components: 2 Lowery 12-stage diffused air strippers in series 5 140 cfm blowers~~

~~• Flow rate: 100 gpm~~

~~• Air/water ratio: 41.8/1~~

~~• Design removal efficiency: trichloroethene - 99.2% • Design influent concentration: 3,250 /zg/L • Treatment objective: groundwater remediation~~

~~Treatment System Performance Data Raymark Superfund Site Trichloroethene Concentration (/ug/L) Date Influent Effluent 1-11-94 (performance test 1) 1,200 0.6 1-11-94 (performance test 2) 1,200 1.2~~

~~WDCR848/032.WP5/3 Appendix C Treatment System Monitoring Plan~~

~~WDCR846/014.WP5/3 Treatment System Monitoring Plan~~

~~CONTENTS~~

~~Section Page 1.0 Background ...... C-l-1 1.1 Introduction ...... C-l-1 1.2 Sampling Objectives ...... C-l-1~~

2.0 Sampling Program ...... C-2-1 2.1 Sampling Locations and Frequencies ...... C-2-1 2.2 Sampling Designation ...... C-2-1 2.3 Type of Analysis ...... C-2-3 2.4 Project Staff Training ...... C-2-3 .2.5 Sample Collection Procedures ...... C-2-4 2.6 Decontamination Procedures ...... C-2-4 2.7 Field Quality Control Procedures ...... C-2-4 2.8 Chain-of-Custody Procedures ...... C-2-5 2.9 Sample Shipping Procedures ...... C-2-6 3.0 Documentation ...... C-3-1 3.1 Sample Labels ...... C-3-1 3.2 Custody Seals ...... C-3-1 3.3 Field Notebooks ...... C-3-1 *

~~Figures~~

~~C-3-1 Chain-of-Custody Record Form ...... C-3-2 C-3-2 Example Custody Seal ...... C-3-3~~

~~Tables C-2-1 Sampling Locations and Analytical Parameters ...... C-2-2 C-2-2 Summary of Analytical Methods ...... C-2-3~~

~~WDCR848/031.WP5~~

~~ARQGOI3i Section 1.0 Site Background~~

i 1.1 Introduction The Monitoring Plan describes the scope of the compliance monitoring activities to be performed at the Dublin TCE Site. Samples will be collected from the following three locations at the water treatment plant: • Untreated well water • Treated effluent • Discharge from the carbon adsorber

The objective of the Monitoring Plan is to specify: • The numbers and locations of samples to be collected . • The procedures to be used in the field to collect representative samples • The procedures to be used to assure quality control

1.2 Sampling Objectives The existing data and planned remediation activities are described in Section 2 of the remedial design (RD) work plan. The overall objective of the sampling activities planned for the Dublin TCE Site is to monitor and demonstrate the operation of the water treatment system in compliance with discharge requirements.

~~WDCR848/013.WP5 Section 2.0 Sampling Program~~

Untreated well water, treated effluent, and air discharges from the carbon adsorber will be sampled to demonstrate compliance with treatment requirements. This section describes sampling locations and frequencies.

2.1 Sampling Locations and Frequencies Sampling locations and analytical parameters will be determined by the Bucks County Department of Health and will be listed in the operating permit. Table C-2-1 lists possible sampling locations and analytical parameters for cost estimating purposes.

~~2.2 Sample Designation~~

All samples collected during remedial action field activities will be designated by a unique alphanumeric code that will identify the matrix and location samples. Each sample will be referred to in all field documentation using this designation system. The system is described as follows:

~~AA AA AN N . Site code Matrix Sample location Sampling round where: . Site Code: DU Matrix:~~

• GW-Ground water sample • AA-Air sample • TB-Trip blank sample Sample Location: • Cl-Carbon adsorption unit air discharge • Il-Groundwater influent to the treatment system • El-Effluent from the treatment system • • E2-Point of use water sample (if required)

C-2-1 AROGOI33 Table C-2-1 POTENTIAL SAMPLING LOCATIONS AND ANALYTICAL PARAMETERS* Analytical Sampling Locations Parameters Frequency Untreated Well Water TCE, PCE, Quarterly Vinyl Chloride Treated Effluent TCE, PCE, Quarterly Vinyl Chloride Other VOCs Quarterly (See Note 1) Coliform 2/Month (See Note 2) Fluoride Every 3 Years Residual Chlorine Once Per Day (See Note 3) Discharge from the Carbon TCE See Note 4 Adsorber *This table provides information for O&M cost estimating purposes only. The actual required sampling locations and analytical parameters will be determined by the Bucks County Department of Health and will be presented hi the operating permit. Notes: 1. VOCs other than TCE, PCE, and vinyl chloride need to be monitored once. Afterwards, VOC monitoring will be for those VOCs that were detected in the first quarterly sample. 2. Five samples will be collected during the month following a positive detection of coliform. 3. Continuous monitoring may be required if coliform is detected in the treated or untreated water. 4. Ah- discharge from the carbon adsorber will be sampled when it is estimated that the carbon will be expended. If breakthrough has not occurred at the time of initial sampling, additional samples will be collected quarterly. The time of breakthrough will be estimated on the basis of VOC concentrations hi the untreated well water.

~~Sampling Round • Unique sample number The following are examples of how the sample nomenclature system should be used:~~

~~• DU-GW-I1-3 - Dublin site, groundwater sample, treatment system influent, round 3.~~

~~C-2-2 DU-TB-E1-1 - Dublin site, trip blank, treatment system effluent sampling, round 1.~~

~~2.3 Type of Analysis Table C-2-2 describes the analytical methods to be used in monitoring the operation of the OU-1 treatment plant.~~

~~Table C-2-2 SUMMARY OF ANALYTICAL METHODS~~

Sample Volume Holding Matrix Parameter Analytical Method Preservative Required Time Groundwater VOCs3 EPA Method 601 HC1 to pH <2 4x40 ml vials 14 days Cool to 4°C Treated Water VOCsb EPA Method 601 HC1 to pH <2 4x40 ml vials 14 days Cool to 4°C Treated Water Coliform Cool to 4°C 250 m! plastic 6 hours Treated Water Fluoride EPA Method 340.2 None 250 ml plastic 28 days Treated Water Residual EPA 330.4 or None 250 ml plastic or 24 hours Chlorine EPA 330.5 glass Air Discharge VOCs EPA-T014' None lx6L SS canister 14 days "TCE, PCE, Vinyl Chloride hOther VOCs mandated. by federal and state drinking water regulations. CEPA-TO 14— The Determination of VOCs in Ambient Air Using SUMMA Passivated Canister Sampling and GC/MS Analysis, Compensation of Methods for the Determination of Toxic Organic Compounds in Ambient Air (EPA/600/4-89/017).

~~A local laboratory will be used to analyze the other water quality parameters. The local laboratory must be approved by the DER for drinking water quality analyses.~~

~~2.4 Project Staff Training~~

The QAPjP identifies the key project staff for the remedial action sampling activities. Personnel assigned to operate field equipment must be certified in the operation .of that equipment. Onsite personnel must attend a briefing on site-specific hazards before working at the site.

~~Key field personnel will receive the Monitoring Plan and the QAPjP in tune to allow for review prior to field activities.~~

~~C-2-3 2.5 Sample Collection Procedures~~

At the beginning of each day of sample collection, sample equipment will be checked. A sample inventory form will be completed for each sample collected to record information and to provide historical information. Samples will be placed in containers and preserved according to PaDER Safe Drinking Water Program protocol. Samples will be analyzed within the proper holding time as shown in Table C-2-2. For VOC water samples, the bottles should be filled so as to minimize aeration of the samples. The bottles must be filled so that there is no headspace. No air bubbles should be trapped in the bottle. Before sampling, the sample bottles should be handled to prevent contamination. At the time of sampling, the bottle cap should be removed carefully from the previous decontaminated sample bottle. The cap should not be laid down, nor should anything be allowed to touch the inside of the cap. At no tune should the inside of the bottle come into contact with anything other than the sample. Preservatives will be added as shown in Table C-2-2 before sample collection. Where specific pH values are required for preserved samples, the pH will be verified using pH paper. Bagged ice will be used to maintain required sample temperature.

2.6 Decontamination Procedures For all VOC samples, clean sample containers will be obtained from an PaDER-certified bottle contractor for VOAs. Other analytical bottles for water samples will be obtained from the analytical laboratory. The standard PaDER cleaning procedures for sample containers will be followed.

Prior to shipment to the field, the boxes of VOC sample containers will be sealed using custody seals described in Section 3. If the custody seals are broken when the boxes are selected for use, the containers in those boxes will not be used. The boxes will be kept in a secure dedicated area restricted to all but designated field personnel.

2.7 Field Quality Control Procedures Quality control duplicate samples and blanks are used to provide a measure of the internal consistency of the samples and to provide an estimate of the components of variance and the bias in the analytical process. Table D-10-1 in the QAPjP provides a summary of the collection frequencies of the field QC samples.

~~C-2-4 2.7.1 Blanks~~

Trip blanks provide a measure of cross-contamination sources, decontamination efficiency, and other potential errors that can be introduced from sources other than the sample. High purity liquid chromatography (HPLC) water will be used for blanks.

One trip blank will be included each day for each cooler. The trip blanks will be prepared prior to each sampling event, shipped or transported to .the field with the sampling bottles, and sent to the laboratory unopened for analysis. Trip blanks will not be prepared or handled in the field. Trip blanks will indicate if there is any contamination during shipment to the field, from storage in the field, or from shipment from the field to the analytical laboratory. 2.7.2 Duplicates

One field duplicate sample will be collected each quarter from the untreated well water. The sample and the duplicate sample will be submitted for analysis as two independent samples and shall not be numbered identically.

~~2.8 Chain-of-Custody Procedures~~

The possession of samples must be traceable through preparation and shipping of containers, collection of samples, and completion of sample analysis. Chain-of-custody procedures are used to maintain and document sample possession during collection and analysis. The principal documents used to identify samples and to document possession are: • Chain-of-custody records forms • Airbills (e.g., Federal Express, Airborne) • Field notebooks

The sampler will be responsible for the care and custody of the samples from the tune they are collected until they are transferred to another individual or shipped to the laboratory for analysis. The sampler will fill out a chain-of-custody form for each cooler of samples shipped. When transferring custody, the individuals relinquishing and receiving the samples will sigh, date, and note the tune of exchange of the records.

To verify that samples have not been tampered with during shipment to the laboratory, coolers will be sealed with a minimum of two custody seals, one in front and one in the back. Custody seals will be signed and dated by samplers. Clear tape will be placed over the seals to reduce the chance that the seals may be accidentally broken during shipment.

~~AROOOI37 2.9 Sample Shipping Procedures~~

Certain shipping procedures must be used to meet the chain-of-custody and sample preservation requirements. Listed below are the procedures for^shipping the samples from the field. 1. The sample label will be completed as soon as the sample is collected in the field and will be secured to the outside of the container with clear tape. 2. The filled sample container will be placed in a 2-mil-thick (or thicker) polyethylene bag, one sample per bag. Jars should be positioned so labels can be read through the bag. 3. The bagged containers (surrounded by styrofoam or vermiculite packing material for stability during transport) will be placed in a cooler with sufficient bagged ice to maintain an internal temperature of 4°C. The chain-of-custody form must be properly executed, sealed in a plastic bag along with a return shipping label for the cooler, and taped to the inside cooler lid. 4. The cooler will be secured with fiber tape. Custody seals will be placed on at least 2 sides to maintain its integrity during shipment.

~~5. The VOA samples will be shipped from the field on the day they are collected. The coliform samples will be delivered directly to the laboratory by the sampling team.~~

~~WDCR848/014.WP5 Section 3.0 Documentation~~

At a minimum, documentation for sampling must follow the procedures discussed hi this section as well as the chain-of custody procedures discussed in Section 5 of the QAPjP. Additional documentation requirements may be indicated by the individual analytical methodologies or by the regulatory requirements of PaDER, Bureau of Water Supply and Community Health. The documents that will be used during sampling include the following: • Chain-of-Custody Record Forms (Figure C-3-1) • Sample Labels • Custody Seals (Figure C-3-2) • Field Notebooks

~~3.1 Sample Labels~~

Sample labels will be prepared by field personnel and will be attached to.sample bottles with clear tape. The information that will be written on the labels is the sample identification number from the organic traffic report form. These labels will be attached to the sample bottles in order to avoid confusion, should the sample tag become illegible or lost during shipment to the laboratory.

~~3.2 Custody Seals~~

When samples are shipped, they must be placed hi containers sealed with custody seals (Figure C-3-2). At least two seals must be placed on each shipping container (cooler or box), one each on the front and back, hi such a manner that a broken seal would implicate that the cooler or box had been opened. Clear tape will be placed over the seals to reduce the chance the seals will be broken during shipment. Upon receipt of containers in the field, custody seals are to be inspected and their condition recorded.

3.3 Field Notebooks Field notebooks will be used to record data collection activities performed at the site. Entries will be in waterproof ink and written in sufficient detail so that a history of the sampling event can be reconstructed without reliance on memory.

~~c-3-i flR000139 d Ji-' i~~

~~CUSTODY SEAL * «.Jk o Hate — - i • i • « a o XXiXJfS U^WlC «\. 1V3S AQOlSnO Signature~~

Figure C-5*2 EXAMPLE CUSTODY SEAL A R fl fl Q 1 h jDublinTCEMonitoringp|an The field notebooks used will be bound field survey books. Notebooks with detachable pages are not acceptable. Notebooks will be assigned to field personnel but should be stored securely in the Borough of Dublin's offices when not hi use. The notebooks should be available for inspection by EPA, PaDER or designated representative with reasonable notice. After each quarterly sampling event, copies of the field notebooks should be sent to EPA or designated representative. Pages will be numbered sequentially.

The cover of each field notebook should indicate: • Person and organization to whom the notebook is assigned • Notebook number • Project name • Start date • End date The field notebooks should be used to collect the following information: • Date, start time, and end time of each sampling event ' • Name of the field team leader • Names of all field personnel present • Difficulties, accidents, or incidents • Deviations from the Monitoring Plan and QAPjP The bottom of each page will be signed by the person making the entries. Each line on a page should be used. Lines that are not used should be crossed out, signed, and dated.

All measurements made will be recorded. The person making entries will initial the entries. Corrections will be made by drawing a single line through the error and initialing and dating the correction. Information may not be erased or rendered unreadable for any reason. Wherever a sample is collected or a measurement is made, a detailed description of the sampling location will be recorded.

~~WDCR848/015.WP5~~

~~C-3-4 Appendix D Treatment System Quality Assurance Project Plan~~

~~WDCR846/014.WP5/4 Treatment System Quality Assurance Project Plan~~

~~CONTENTS~~

~~Section Page~~

~~1.0 Introduction ...... D-l-1~~

2.0 . Project Description ...... D-2-1 2.1 Site History ...... D-2-1 2.2 Sampling Objectives ...... D-2-5 2.3 QAPjP Objectives ...... D-2-5 2.4 Scope of Field Activities ...... D-2-6 3.0 Project Organization ...... D 3-1 4.0 Quality Assurance Objectives ...... D-4-1 4.1 Accuracy and Precision ...... D-4-3 • 4.2 Completeness ...... D-4-4 4.3 Representativeness ...... D-4-4 4.4 Comparability ...... D-4-4

~~5.0 Sample Collection Procedures ...... D-5-1~~

~~6.0 Sample Custody ...... D-6-1 6.1 Field Custody ...... D-6-1 6.2 Transfer Custody ...... D-6-1 6.3 Laboratory Custody ...... D-6-1 6.4 Sample Disposal ...... D-6-1~~

7.0 Equipment Calibration ...... D-7-1 8.0 Analytical Procedures ...... D-8-1 9.0 Data Reduction and Reporting ...... D-9-1 9.1 Date Reduction ...... D-9-1 9.2 Reporting ...... ;...... D-9-1 9.3 Records ...... D-9-2 10.0 Quality Control Checks ...... D-10-1 11.0 Preventive Maintenance ...... D-ll-1 11.1 Maintenance Responsibilities ...... D-ll-1 11.2 Maintenance Schedules ...... D-ll-1 11.3 Spare Parts ...... D-ll-2 Treatment System Quality Assurance* Project Plan

~~CONTENTS (Continued)~~

~~Section Page 12.0 Data Assessment Procedures ...... D-12-1 13.0 Corrective Actions ...... D-13-1 14.0 Quality Assurance Reports ...... D-14-1~~

~~Figures D-2-1 Site Location Map ...... D-2-2 D-2-2 Site Map ...... D-2-3 D-13-1 Corrective Action Request Form ...... D-13-2~~

~~Tables D-4-1 Data Quality Levels ...... D-4-2 D-4-2 Precision, Accuracy, and Completeness Objectives ...... D-2-2 D-10-1 Number of Field QC Samples for Sampling Event ...... D-10-2~~

~~WDCR848/030.WP5 Section 1.0 Introduction~~

Environmental Protection Agency (EPA) policy requires all Alternative Remedial Contracting Strategy (ARCS) activities to be controlled by a centrally managed quality assurance (QA) program. This requirement applies to all environmental monitoring and measurement efforts mandated by or supported by EPA. The remedial action (RA) system operator is responsible for implementing procedures to determine that the.precision, accuracy, completeness, representativeness, and comparability of the data collected are known and documented. In addition, the operator should specify acceptable quality levels for data. To meet this responsibility uniformly, each operator must have a written QA Project Plan (QAPjP) covering each project to be investigated. The QAPjP, prepared by EPA Region III and its contractor, presents, in specific terms, the policies, objectives, organization, functional activities, and QA and quality control (QC) activities designed to achieve the data quality goals of the specific project. Where possible, existing QA/QC guidelines, policies, programs, and other specifics are incorporated into the QAPjP by reference.

~~WDCR840/001.WP5~~

~~D-l-1 Section 2.0 Project Description~~

2.1 Site History The information hi this section was taken from the December 30, 1991, Record of Decision (ROD). The Dublin TCE Site is at 120 Mill Street in Dublin Borough, Bucks County, Pennsylvania, approximately 400 feet west of State Route 313 (see Figure D-2-1). The Site (identified as the "Thompson Property" hi Figure D-2-2) occupies approximately 4.4 acres and is bordered by residences and businesses on the east, west, and south. A fruit orchard borders the Site on the north and west. Site structures consist of a single-story brick building and a surrounding parking lot. Regional water is supplied primarily by private and public wells. The aquifer is classified as Class IIA, a current source of drinking water. Available information indicates that groundwater flows from southeast to northwest beneath the Site and is controlled predominantly by fractures. Groundwater beneath the Site flows toward residential and commercial wells hi Dublin Borough.

The Site operated as a hosiery mill from the 1930s until 1956. Dublin Hosiery Mills operated the Site from 1945 to 1956. Home Window Company of Pennsylvania manufactured aluminum doors and windows at the property from 1956 to 1959. Kollsman Motor Corporation owned and operated the Site from 1959 to 1971, manufacturing miniature precision motors, gear trains, clutches, brakes, and related electromechanical components for aircraft and missiles. Trichloroethylene (TCE) was used as a degreasing solvent at a rate of approximately 15 gallons per week. Spent TCE reportedly was disposed of at the Site by discharge to the ground surface behind the building. Kollsman Motor Corporation sold the property to Kollsman Instrument Corporation (KIC) in 1971.

In 1973, Athlone Industries, Incorporated (Athlone), purchased the property from KIC and operated the Site until 1986. At the Site, Athlone-cleaned, stamped, packaged, and stored baseballs and softballs. In 1982, Athlone used safety solvent No. 2, which contains approximately 10 percent TCE, as a degreasing solvent.

John H. Thompson purchased the property in 1986 and is the current owner and operator of the Site. Mr. Thompson uses part of the Site to restore antique race cars and leases part of the Site to Laboratory Testing, Incorporated (LTI). LTI uses the property for metallurgical testing.

~~.7 Source: USGS 7.5 minute Quadrangle Map (Doylestown, PA)~~

~~, PENNSYLVANIA . spaie 'S Figure r = 2,000- '______^ SITE LOCATION MAP QUADRANGLE LOCATION Dublin TCE Site Dublin Borough Supply Well #3 } Rickerts Road~~

~~N. Main Street \ (Route 313) Proposed Whistlewood hopping>^ /Supply Well Apartment~~

~~1 Elephant Road Mill Street I Cherry Thompson Land Property I——I 'Site' Deep Run Road~~

~~village Green Lane~~

Source: Base Map from Geraghty & Miller, Inc. RI/FS Work Plan May, 1992. Figure D-2-2 SITE MAP f Scale Dublin TCE Site 1" = 800' Dublin, Pennsylvania During a routine survey of private water wells in the summer of 1986, the Bucks County Department of Health (BCDH) discovered levels of TCE as high as 1,000 parts per billion (ppb) in 23 samples of tap water. Approximately 170 homes, apartment units, and businesses in Dublin Borough were found to be affected. BCDH issued advisories to the public on ways to curtail water use and prevent further exposure to TCE. For residences having TCE levels higher than 5 ppb, BCDH recommended installing carbon filters. For residences having TCE levels above 500 ppb, the County cautioned residents not to use untreated tap water for bathing. On September 3, 1986, the Emergency Response Section of EPA Region III received a request from BCDH to evaluate the Site. In a preliminary assessment, EPA determined the current use of all residential and commercial wells found to be contaminated by TCE. Oh June 29, 1987, EPA entered into a Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Section 106 Consent Order and Agreement with Mr. Thompson, who agreed to do the following:

« Ensure that all residents and commercial employees exposed to TCE at levels greater than 5 ppb would have an adequate treatment system in place or would be supplied with bottled water. • Periodically monitor all carbon filters and air strippers being used by the residences and businesses to ensure that the units are functioning properly. • Periodically monitor groundwater for all residences and businesses at risk.

The Consent Order and Agreement was amended hi April 1991 to specify point-of-entry carbon filtration systems—that is, treatment systems installed at the point where potable water enters the household—for all residential dwellings where groundwater contamination was higher than 5 ppb TCE. At businesses, either bottled water or point-of-use carbon filtration systems were provided. The amendment also addressed the risk of inhaling'TCE vapors released from groundwater. Residences that were previously equipped only with point-of-use treatment systems (for example, treatment systems at the kitchen tap) were subsequently supplied with the point-of-6ntry systems. Testing of residential wells under this order identified additional contaminants in the groundwater, including tetrachloroethylene (PCE) and vinyl chloride.

On June 4, 1990, the Pennsylvania Department of Environmental Resources (PaDER) and Sequa Corporation (current owner of the former Kollsman Motor Corporation and KIC) entered into a Consent Order and Agreement under the Commonwealth's Clean Streams Act. Sequa Corporation agreed to investigate and abate the groundwater-contamination problems at and near the Site. Ten monitoring wells were installed at or near the property under separate studies by BCM (for Mr. Thompson) and Geraghty & Miller (for Sequa). Both the onsite and the offsite wells show contamination by volatile organic compounds (VOCs), including TCE and vinyl

~~D-2-4 SROQ015G chloride. Three municipal supply wells in the Borough were tested for VOCs in 1991 by Dublin Borough. No contamination was detected hi those wells.~~

The Site scored 28.9 under EPA's Hazard Ranking System and was proposed for inclusion on the CERCLA National Priorities List (NPL) on October 2, 1989. The Site was added to the NPL on August 30, 1990. In 1991, EPA conducted a focused feasibility study (FFS) of OU-1 at the Site to evaluate means of providing an alternative supply of clean drinking water to the affected and potentially affected residences and businesses. EPA issued a ROD on December 30, 1991, that described the remedy EPA proposed to implement for OU-1. The remedy selected by EPA consisted of connecting affected businesses and residences to the borough's existing water system by expanding the distribution system, developing a new water-supply well within the plume of contamination, and treating water from this well by air stripping before the water is distributed to the affected parties. The affected properties consist of 69 homes, apartment complexes, and businesses where well water exceeded or had the potential to exceed the maximum contaminant level (MCL) set by EPA or posed a cancer risk at a level of 1 x 10"6 or greater for VOCs, including TCE, PCE, and vinyl chloride. The ROD also identified residences and businesses whose wells require continued monitoring on the assumption that they may become contaminated by VOCs from the Site if a groundwater remedial action is not implemented by 1995. This QAPjP addresses the sampling and monitoring requirements associated with the OU-1 air stripping system. The air stripper is intended to remove TCE, PCE, and vinyl chloride to below the MCL on the IxlO"6 cancer risk level. Off-gas from the air stripper will be treated by carbon adsorption.

2.2 Sampling Objectives The sampling activities described by this QAPjP will be conducted in order to demonstrate compliance with applicable requirements and regulations (ARARs) and to permit adequate monitoring of the operation of the water treatment and associated off-gas treatment systems.

~~2.3 QAPjP Qbjectives~~

The QAPjP specifies procedures to obtain precise, accurate, complete, representative, and comparable samples and to specify sampling and analytical procedures that will permit identification of the compounds of concern.

D-2-5 AROOOJ5I 2,4 Scope of Field Activities The Borough of Dublin will implement the activities described in the Monitoring Plan and the QAPjP. These activities will include the collection and analysis of water quality samples and the collection and analysis of off-gas samples, and the monitoring of process operational indicators in accordance with the federal Safe Drinking Water Act and Pennsylvania's Safe Drinking Water Regulations. The locations and procedures for sample collection and custody are detailed in the Monitoring Plan.

~~WDCR840/002.WP5~~

~~D-2-6 Section 3.0 Project Organization~~

This section describes the project organization for the OU-1 remedial action and the responsibilities of the different entities involved in implementing the remedy. Primary responsibility for project quality rests with the Borough of Dublin, who will operate the OU-1 treatment system. Actual sampling activities will be performed or subcontracted by the Borough of Dublin. They will identify the field team leader and sample collectors closer to the sampling event. The field team leader will also be the field QC officer. The Bucks County Department of Health will enforce the drinking water regulations as an agent for PaDER Bureau Water Supply and Community Health, will be provided with analytical results, and will have final approval authority over the quality of the sampling and analytical work.

~~WDCR840/003.WP51~~

~~D-3-1 AROOOI53 Section 4.0 Quality Assurance Objectives~~

Data Quality Objectives (DQOs) will be established for each round of quarterly sampling as specified hi the Data Quality Objectives for Remedial Response Activities, March 1987. DQOs are the quantitative and qualitative descriptions of the quality of data required to support an environmental decision or action. As target values for data quality, they are not necessarily criteria for acceptance or rejection of data. The data user develops DQOs for a specific purpose. Everyone from the data gatherer to the analytical laboratory is involved in the process from the beginning. The DQO development process involves three stages— including (1) definition of the question or decision to be made, (2) clarification and precise identification of the information required, and (3) data collection program design. The DQOs for the RA sampling and monitoring activities are as follows: • The air and water samples from the water treatment system are being collected to verify the effectiveness of the treatment system and its ability to meet the permitted effluent levels. • The treatment system will be monitored to verify proper operation. EPA's DQO Guidance Document defines data quality in terms of analytical levels, as follows: • Level I - Field screening using portable instruments, such as photoionization detectors. • Level II - Field analyses using more sophisticated portable analytical instruments, such as a portable gas chromatograph. • Level III - Analyses performed in off-site laboratories, but not utilizing the stringent validation and documentation procedures required of contract laboratory program (CLP) protocol. • Level IV - Analyses performed at off-site laboratories according to CLP protocols; which require stringent QA/QC procedures, documentation, and data validation.

~~« • Level V - Analyses by non-standard methods. In order to achieve the established DQOs, the levels of data quality shown on Table D-4-1 will be used.~~

AROOOI51. Table D-4-1 DATA QUALITY LEVELS Parameters Sampled Purpose Data Quality Level Raw (untreated) water To estimate VOC loadings Level III onto the vapor-phase carbon units. To determine the need for continuing treatment. Treated water To confirm VOC removal Level m efficiency. To monitor for compliance with state and federal drinking water regulations. Air discharges from the To monitor for VOC Level V vapor-phase carbon units breakthrough. Treatment plant monitoring To verify proper operation Level V of the treatment plant

~~The precision, accuracy, and completeness objectives for this program are shown in Table D-4-2.~~

Table D-4-2 PRECISION, ACCURACY, AND COMPLETENESS OBJECTIVES Precision (Reiative Accuracy Data Quality Percent (% Spike % Parameter Level Difference) Recovery) Completeness Volatiles— water Level III <±20 80-120 95 Volatiles— water Level III <±20 80-120 95 Volatiles — air Level V <±30 70-130 95 Fluoride Level III <±20 80-120 95 Coliform Level III NA NA NA Treatment plant Level V NA NA NA monitoring NA = Not applicable.

~~D-4-2 4.1 Accuracy and Precision~~

Accuracy is a measure of the agreement between an experimental result and the true value of the parameter. Analytical accuracy can be determined using known reference materials or matrix spikes. Spiking of reference materials into the actual sample matrix is the preferred technique because it quantifies the effects of the matrix on the analytical accuracy. Accuracy can be expressed as the percent recovery (P) as determined by the following equation:

~~P = SSR ~ SR x 100 SA~~

where: SSR = spiked sample result SR 3= sample result (native) SA = spike added Precision is the measure of the agreement or repeatability of a set of replicate results obtained from repeat determinations made under the same conditions. The precision of a duplicate determination can be expressed as the relative percent difference (RPD) which is determined by the following equation:

~~RPD = " x 200 XI + X2~~

where: XI = first duplicate value X2 = second duplicate value For a given laboratory analysis, the replicate RPD values are tabulated, and the mean and standard deviation of the RPD are calculated. Control limits for precision are usually plus or minus two standard deviations from the mean. Accuracy and precision will be monitored by using field replicate, matrix spike, and matrix spike duplicate samples. These data alone cannot be used to evaluate accuracy and precision of individual samples but will be used to assess the long-term accuracy and precision of the analytical method.

D"4"3 A ROOD 156 4.2 Completeness Completeness is defined as the percentage of analytical measurements made that are judged to be valid with validity being defined by the DQOs. Percent completeness is calculated as the number of valid analyses divided by the total number of analyses performed multiplied by 100.

4.3 Representativeness Representativeness expresses the degree to which sample data accurately and precisely represent parameter variations at a sampling point. Representativeness is a measure of how closely the measured results reflect the actual distribution and concentration of certain chemical compounds hi the medium sampled. The Treatment System Monitoring Plan describes the procedures to be used to collect samples. This process will generate samples that are as representative as possible. Documentation of laboratory and field procedures, as described in the Monitoring Plan, will be used to establish that protocols have been followed and that sample identification and integrity have been maintained.

4.4 Comparability Comparability is the term that describes the confidence with which one data set can be compared to another. Comparability refers to such issues as using standard field and analytical techniques and reporting data in the same units. This criterion becomes important if more than one field team is collecting samples or more than one laboratory is analyzing the samples.

~~WDCR840/004.WP5~~

~~D-4-4 Section 5.0 Sample Collection Procedures~~

~~A detailed description of sampling procedures is provided hi the Treatment System Monitoring Plan. Procedures are included that describe, at a minimum: • Sample plan design considerations~~

~~• Sampling points~~

~~• Sample packing, handling, and shipment (including time considerations)~~

• Special conditions for sample container preparation and tune requirements (tabulated) • Preparation and use of trip blanks • Documentation of sampling activities (field forms, logbooks, sampling conditions, and sample analyses to be conducted)

~~WDCR840/005.WP5~~

~~D"54 /4ROOOI58 Section 6.0 Sample Custody~~

The project-specific procedures for sample custody are described fully hi Section 3.0 of the Monitoring Plan. Maintaining the integrity of the sample from collection to data reporting is essential to any sampling and analytical program. This requires tracing the possession and handling of samples from the time of collection, through analysis, to final disposal. This documentation is referred to as chain-of-custody (COC). The essential components of this COC are described in detail in the Monitoring Plan and summarized below.

~~6.1 Field Custody The sample collectors are responsible for the care and custody of samples until they .are shipped or otherwise delivered to the laboratory custodian.~~

6.2 Transfer of Custody The COC form is to be completed before samples are shipped. The persons involved in relinquishing and receiving the samples will sign, date, and note the tune of sample receipt on the COC form. The first such transfer may occur between the field sampler and the sample carrier. Another transfer may occur between the sample carrier and the laboratory sample custodian. Each sample shipment will be. accompanied by a COC record that identifies the contents of the shipment.

6.3 Laboratory Custody The laboratory custodian will verify that the custody seals on the sample shipment or the containers are intact and that the information on the COC matches the actual contents. The laboratory custodian will also note any anomalies, such as broken bottles, elevated temperatures, and missing labels. The project-specific procedures for sample custody are described fully in Section 2.0 of the Monitoring Plan.

6.4 Sample Disposal Unless otherwise instructed, the analytical laboratory will dispose of unused sample portions, according to Resource Conservation and Recovery Act (RCRA) regulations, after the analyses have been completed and any outstanding issues between the contractor and the laboratory have been resolved.

~~WDCR840/006.WP5 D-6-1 Section 7.0 Equipment Calibration~~

Various instruments, equipment, and sampling tools will be used to collect data and samples and to monitor site conditions. Proper calibration, maintenance, and use of instruments and equipment are imperative for collecting quality data. A record of calibration and maintenance activities is as important as the data record itself in order to verify the delivery of quality data.

The Monitoring Plan indicates the sampling methods and needed tools. Maintenance of treatment plant monitoring equipment, for example phosphorus and residual chlorine probes, will be addressed hi the Operations and Maintenance (O&M) Plan.

~~WDCR840/007.WP5~~

~~flROOOI60 Section 8.0 Analytical Procedures~~

Samples collected for compliance monitoring purposes, the treated and untreated water and the air discharge samples, must be analyzed by laboratories approved by the Pennsylvania Department of Environmental Resources. Analytical activities in support of process monitoring will be analyzed either by field instruments or by local laboratories.

~~WDCR840/008.WP5~~

~~D-8-1 Section 9.0 Data Reduction and Reporting~~

~~Data reduction, and reporting are steps in the overall management and use of both field and laboratory data.~~

9.1 Data Reduction 9.1.1 Definition Analytical data collected and received from the laboratory will be input into a data base by the Borough. All entries will be double-entered and verified. The Borough's sample manager will handle data entries that are unverified. Units for VOA sample results will be reported hi /zg/1. Units for coliform results will be reported in coliforms per 100 ml. 9.1.2 Background Data

Background data produced for internal records and not reported as part of the analytical data include the following: laboratory worksheets, laboratory notebooks, sample tracking system forms, instrument logs, standards records, maintenance records, calibration records, and associated quality control. These sources will be available for inspection during audits and to determine the validity of data.

~~9.2 Reporting 9.2.1 Contents of Report~~

~~The analytical laboratory report will contain such information for samples as: • Title and location of the project~~

~~• Project identification number ^ • Name of the report • Date report was prepared • Sample identification number • Name and location of sample • Type of sample (water or air)~~

~~D-9-1 Date on which analysis was performed Any special observations, circumstances, or comments that may be relevant for interpretation of the data The laboratory manager's signature~~

9.3 Records The following describes procedures for maintaining the project's records: • Records shall be maintained as described hi the monitoring plan • Records of field activities that support the integrity of samples shall be entered on bound and numbered pages. Such records shall be dated and signed or otherwise authenticated on the day of entry. • There shall be sufficient information in records to permit identification between the record and the item(s) or activity to which it applies. Identifi- cation of records will be by means that permit traceability.

~~• The records storage system shall provide for accurate retrieval of records without undue delay.~~

~~WDCR840/009.WP5~~

~~D-9-2 SROUOI63 Section 10.0 Quality Control Checks~~

A number of QA/QC samples will be collected to check the adequacy of sample collection and analysis and to monitor laboratory performance. Duplicates, and blanks are used to test the sampling technique to determine if the technique affects the analytical results, to measure the internal consistency of the samples, and to estimate any variance or bias in the analytical process. The field QA/QC sampling procedures are described below. Quality control duplicate samples and blanks are used to provide a measure of the internal consistency of the samples and an estimate of variance and bias. Table D-10-1 shows the collection frequencies of the field QC samples. Blanks provide a measure of cross-contamination sources, decontamination efficiency, and other potential errors that can be introduced from sources other than the sample. Three types of blanks can be generated during sampling activities: trip blanks, field blanks, and equipment (rinsate) blanks. Field blanks and equipment blanks will not be needed. One trip blank will be included hi each cooler used for the shipment of Volatile Organic Analysis (VOA) samples. The trip blanks (VOA only) will be prepared before each sampling event, shipped or transported to the field with the sampling bottles, and returned unopened for analysis. Trip blanks will indicate if there is any contamination during shipment to the field, from storage in the field, or from shipment from the field to the analytical laboratory. One field duplicate sample will be collected each quarter from the untreated well water. Each sample to be duplicated will be split evenly into two sample containers and submitted for analysis as two independent samples.

~~WDCR840/010.WP5~~

~~D-10-1 Table D-10-1 NUMBER OF FIELD QC SAMPLES FOR SAMPLING EVENT Media Analysis Trip Blank Duplicate Water VOAs 1 1 Coliforms 1 Air VOAs 1 -~~

~~WDCR840/019.WP5~~

~~AROOOI65 Section 11.0 Preventive Maintenance~~

The primary objective of a preventive maintenance program is to help ensure the timely and effective completion of a measurement effort. The preventive maintenance program is designed to minimize the down time of critical sampling and/or analytical equipment due to expected or unexpected component failure. In implementing this program, efforts are focused in three primary areas: • Establishment of maintenance responsibilities • Establishment of maintenance schedules for major and/or critical instrumentation and apparatus • Establishment of an adequate inventory of critical spare parts and equipment Each of these is discussed in the following subsections

~~11.1 Maintenance Responsibilities~~

Equipment and apparatus used hi remedial action measurement programs typically fall into two general categories: • Equipment that is permanently assigned to a specific laboratory • Field sampling equipment that is available for use on an as-needed basis Maintenance responsibilities for laboratory instruments are assigned to the respective laboratory managers. The laboratory managers then establish maintenance procedures and schedules for each major equipment item. Responsibility for specific items may be delegated to laboratory personnel, although the laboratory managers retain responsibility for ensuring adherence to prescribed protocol.

Maintenance responsibilities for field equipment is the responsibility of the Borough of Dublin. The Borough is also responsible for ensuring that critical spare parts and/or backup systems are included as part of the field equipment. Critical spare parts will be included on the field equipment checklist used for sampling preparation.

11.2 Maintenance Schedules The effectiveness of any maintenance program depends to a large extent on adherence to specific maintenance schedules for each major equipment item. A specific schedule will be established for all major maintenance activities. Other maintenance activities will also be

D-ll-1 identified as requiring attention on an as-needed basis. Manufacturers' recommendations will provide the primary basis for the established maintenance schedules, and manufacturers' service contracts will provide the primary maintenance for many major instruments. Maintenance activities will be documented in a maintenance log that indicates the required frequency for each procedure and provides for dated entries.

11.3 Spare Parts Along with a schedule for maintenance activities, an adequate inventory of spare parts is required to minimize downtime. This inventory should emphasize those parts and supplies that: • Are subject to frequent failure • Have limited useful lifetimes • Cannot be obtained in a timely manner should failure occur The Borough of Dublin and respective laboratory managers are responsible for maintaining an adequate inventory of necessary spare parts.

~~WDCR848/008.WP5~~

~~D-ll-2 Section 12.0 Data Assessment Procedures~~

~~The precision and accuracy of data will be routinely assessed to ensure that they meet the requirements of the DQOs.~~

~~Precision is commonly determined from duplicate samples; thus precision is usually expressed as RPD or relative standard deviation (RSD). These quantities are defined as follows.~~

~~RPD = —-——- x 200 . RSD = (100/2) x [21*! - XJ/Q.! + X2)]~~

where Xi and X2 are the reported concentrations for each duplicate sample Accuracy is commonly presented as percent bias or percent recovery. Percent bias is a standardized average error; that is, the average error divided by the actual or spiked concentration and converted to a percentage. Percent bias is unitless, so it allows the accuracy of analytical procedures to be compared easily.

~~Percent recovery provides the same information as percent bias. Accuracy is often determined from spiked samples. Percent recovery is defined as:~~

~~D % Recovery = — x 100 iJ~~

~~where S = spiked concentration R = reported concentration Given this definition it can be shown that~~

~~% bias = % recovery -. 100~~

~~WDCR848/009.WP5~~

~~D-12-1 Section 13.0 Corrective Actions~~

The Borough of Dublin is responsible for initiating corrective actions. Corrective action steps will include problem identification, investigation responsibility assignment, investigation, action to eliminate the problem, increased monitoring of the effectiveness of the corrective action, and verification that the problem has been eliminated.

Documentation of the problem is important to the overall management remedial action. A Corrective Action Request Form for problems associated with sample collection, shown in Figure D-13-1, will be completed by the person discovering the QA problem. This form identifies the problem, establishes possible causes, and designates the person responsible for action. The Corrective Action Request Form includes a description of the corrective action planned and has space for follow-up. The Borough of Dublin will verify that initial action has been taken and appears to be effective and, at an appropriate later date, check to see if the problem has been fully resolved. The Borough will receive a copy of all Corrective Action Request Forms and enters them into the Corrective Action Log. This permanent record will aid the Borough in follow-up and will assist in resolving quality assurance problems. Examples of corrective actions include, but are not limited to, correcting COC forms, analysis reruns (if holding time criteria permit), recalibration with fresh standards, replacement of sources of blank contamination, examination of calculation procedures, additional training in sample preparation and analysis, reassignment of analytical responsibilities Using a different batch of containers, or recommending an audit of laboratory procedures. Additional approaches may include: • Resampling and analyzing • Evaluating and amending sampling and analytical procedures • Accepting the data and acknowledging the level of uncertainty or inaccuracy by flagging the data and providing an explanation for the qualification

~~WDCR848/010.WP5~~

~~D-13-1 fiROOOi69 Figure D-13-1 CORRECTIVE ACTION REQUEST FORM (Sample Collection)~~

~~Originator:______;______. Date_ Person responsible for replying: ______Description of problem and when identified:~~

~~State cause of problem, if known or suspected:~~

~~Sequence of Corrective Action (CA): State date, person, and action planned:~~

~~CA initially approved by: ______Date: Follow-up date: ______Final CA approval by: ______Date:~~

~~Information copies to: 1 ' RESPONSIBLE PERSON: ______RTL: ______SM: ______~~

~~WDCR848/011.WP5 fl R 0 0 0 I 70 Section 14.0 Quality Assurance Reports~~

A QA report will be completed once per quarter to summarize the QA/QC status of the project and any problems. The report will be an assessment of the measured QA parameters; for example, precision, accuracy, and results of performance audits; any reported non-conformance; and any significant QA problems and the recommended solutions. Any change hi the QAPjP will be summarized in a report or letter and sent to the RPM and distributed to the project team.

~~WDCR848/012.WP5 Appendix E Borough of Dublin Drought Emergency Plan~~

~~WDCR846/014.WP5/5 flROOOl?.? 16, 1989 Revised May 26, 1992 Dublin Borough Bucks County DROUGHT CONTINGENCY PLAN~~

~~iGER POINT DEMAND MEASURES SUPPLY MEASURES~~

~~STAGE I~~

~~Ding Levels: Voluntary Restrictions on Systemwide Leakage and fl _ 93 Feet Nonessential Water Use Loss Reduction Survey *3 - 15Z Feet~~

~~STAGE II~~

inj^evels: Implement Mandatory Restrictions Identify reserve sources '1J^___ feet on Nonessential Water Use of supply and/or •3 l|^yl// Feet interconnections Identify Customers That Could ______Be Shed From System:

~~Notify State Water Plan Division (717) 541-7805 If Stage III appears Imminent, Submit Water Rationing Plan to the Pennsylvania Emergency Management Agency~~

~~STAGE 111~~

Ding Levels: Implement Water Rationing Plan List Emergency Sources fl - 120___ Feet After Approval by the Pennsylvania and Equipment Necessary ."3 - 202 Feet Emergency Management Agency to Utilize Each Source Shed Customers Identified in Stage II

4KOQ0.73 DUBLIN BOROUGH "DROUGHT EMERGENCY" ———————————WATER CONSERVATION PROGRA—M s n The Pennsylvania Department of Environmental Resources and • at Delaware River Basin Commission may declare an area wide "Drought Emergency". In addition, Dublin Borough shall » declare a local "Drought Emergency" based upon any of the following conditions occurring:

~~o . The three day average, pumping level of Well fl, m below top of casing, is lower than 105 feet. z~~

~~The following actions shall be taken by the Borough at the declaration of "Drought Emergency Conditions".~~

1. The Borough shall continue to enforce Non- Essential Water Use Ordinance 149 and may amend such regulations to respond to actual conditions, adopting more or less stringent restrictions applicable to all or part of the Borough depending on drought and water shortage conditions and actual conservation quotas achieved. All "key" monitor wells and stream gauge heights will be measured on a weekly basis following the program specified for Drought Warning Conditions. In addition, all monitor wells shall be measured on a monthly basis.

'74 2. The Borough shall initiate its proposed mandatory "Local Water Rationing Plan" which is designed after the suggestions of the Pennsylvania Drought Contingencies Plan for the Delaware River Basin. A copy of the proposed plan is included. ,

3. The intent of this plan is to reduce weekly aver- * * f age, Borough system consumption to 10,800 gallons per per day (^45 gallons per day per person). All other Borough consumers shall be required to reduce consumption by 25 percent.

4. Should conditions continue to deteriorate, the Borough shall take action, where possible, to lower pump settings in wells and locate and test emergency wells outside of the critical area to supply water for emergency use. Sufficient water reserves shall be kept in the storage tank to provide adequate fire protection to the Borough. • (f

~~LOCAL WATER RATIO KING PLAN for the Service ATM of~~

~~DUBLIN BOROUGH, PA.~~

* ' Authority

Dublin Borough is authorized to promulgate, adopt and enforce a Water Rationing Plan by virtue of Emergency Management Services Code 35 Pa. C.S. 7101 et seq. as implemented by the Drought • Emergency Proclamation dated November 6, 1980; Definitions Special Emergency Area - the area or areas within which the Governor has declared a state of drought and water shortage emergency. (b) Service Area - the territory and the customers serviced by an individual water supply purveyor. (c) Emergency Service Area - the service areas of the water supply purveyors covered by this Local Water Rationing Plan, as set forth in Section 3. Scope. Water Allotment - the maximum quantity of water allowed for each customer over any applicable period as established pursuant to sections 7*10 of this Plan. (e) Water Supply Purveyor - Dublin Borough, PA.

(f) Residential Customer - any customer who receives water service for a single or multi-family dwelling unit. The term residential customer does not include educational or other institutions, hotels* motels, or similar commercial establishments. -- (g) Non-Residential Customer - commercial, industrial, institutional, public and all other users with the exception of hospitals and health care facilities. (h) Service Interruption - the temporary suspension of water supply, or reduction of pressures below that required for-adequate supply, to any customer, portion of a water supply system, or an entire system. (i) Excess Use - the usage of water by a water customer in excess of the water allotment provided under the Local Water Rationing Plan for that customer, over any applicable period.

AROO'0176 (j) Water Customer - any person who is connected to *nd receives water service from a water supply system. \ * Section 2. Purpose This local Water Rationing Plan is intended to establish measures for essential conservation of water resources, and to provide for equitable distribution of limited water supplies, in order to balance demand and limited available supplies and to assure that sufficient water is available to preserve public health and safety within the Emergency Service Area. Section 3. Scope This Local Water Rationing Plan shall apply to all water uses within the Dublin Borough under public or private water supplies.

Section 4. Objective of the Plan (a) It is imperative that water customers within the Emergency Service Area achieve an immediate and further reduction in the water use in order to extend existing water supplies and, at the same time, assure that sufficient water is available to preserve the public health and sanitation, and provide fire protection service. (b) The objective of this Local Water Rationing Plan is to effect an immediate ' 25 percent reduction in water usage which should not exceed 45 gallons per person per day. (c) The immediate 25 percent reduction in water usage is another step along a continuum of responses to the present water supply crisis. Should drought conditions continue, further reductions in usage may be required. It must be emphasized that the 25 percent usage reduction in the emergency area is a valid and attainable figure reflective of the conditions which currently exist. (d) The Plan provides for equitable reductions in water usage, and for equal sacrifice on the part of each water customer. The success of this Plan depends on the cooperation of all water customers in the emergency service area.

~~Section 5 Prohibited Non-Essential Water Uses The following water uses are declared non-essential and are prohibited within the Emergency Serv.~e Area^ : (a) The watering oflawns.~~

^000/78 water purveyor personnel entry to read the meter, alter the purveyor has made reasonable efforts to arrange for such access, the dwelling unit (household) allotment will be reduced to S5 gallons per day. % (4) (0 Where the residential water allotment provided under this section would create extraordinary hardship, as in the case of special health- related requirements, the water customer may apply to the water supply purveyor for an exemption or variance from these requirements. If the purveyor finds that the allotment provided in this section would impose extraordinary hardship, the purveyor may establish a revised allotment for the particular customer. (ii) Any person aggrieved by a decision relating to such an exemption or variance rendered by a public utility or municipal corporation rendering water service beyond its corporate limits may file a complaint with the Public Utility Commission in accordance with the procedures established under the Public Utility Code. (iii) Any person aggrieved by a decision relating to such an exemption or variance rendered by a water supply purveyor not under the jurisdiction of the Public Utility Commission may file an appeal with the Common Pleas Court in the county where the water service is provided, in accordance with the provisions and procedures of the Local Agency Law, 2 Pa. CA SS551-555, 751-7*4.

8. Suggested Conservation Measures The purveyor will provide residential water customers with suggested means for reducing water consumption in order to achieve the established allotment. These suggestions may include: (i) Locate and repair all leaks in faucets, toilets and water-using appliances. -r

(ii) Adjust all water-using appliances to use the minimum amount of water in order to achieve the appliance's purpose. (Ui) Use automatic washing machines and dishwashers only with full loads. Preferably, wash dishes by hand. (iv) Take shorter showers and shallower baths. (v) Turn off shower while soaping; turn off faucet while brushing teeth, etc. (vi) Install flow restrictors in showerheads and faucets. (vii) Reduce the number of toilet flushes per day. Each flush uses about 5 gallons. Reduce water used per flush by installing toilet tank displacement inserts. ' (viii) Use sink and tub stoppers to avoid wasting water. . (ix) Keep bottle of chilled drinking water in refrigerator. (x) Read the meter to determine the household's daily water use. i 9. Water Use Restrictions for Non-Residential Water Customers (a) Non-residential customers include commercial, industrial, institutional, public, and all other users, with the exception of hospitals and health care facilities. in-residential water customers shall reduce their water usage by a minimum 25 percent of use levels for the same quarter of the preceding year. (c) It is the primary responsibility of each non-residential water customer to meet its mandated water use reduction goal in whatever manner possible. (d) The water supply purveyor will establish a water allotment for each non- residential water customer, bused upon a required 25 percent reduction of water usage from the rate of water used by the customer in the same quarter of the preceding year or the last recorded use level if no meter readings record the rate of the customer's use in the same quarter of the preceding year. (e) Each non-residential water user shall provide access to water supply purveyor personnel for purposes of meter reading and monitoring of compliance with this Plan. The water purveyor shall make all reasonable efforts to contact customers to arrange for access. (0 (i) If the mandated 25 percent reduction in water usage cannot be obtained without imposing extraordinary hardship threatening health and safety, the non-residential customer-may apply to the water purveyor who provides the customers' service for a variance. For these purposes, "extraordinary hardship" means s permanent damage to property or economic loss which is substantially more severe than the sacrifices borne by other water users subject to this Water Rationing Plan. If the purveyor finds that the 25 percent reduction would cause extraordinary hardship or threaten health

AROQQI80 or safety, the purveyor may'grant a variance and establish a revised water use reduction requirement for the particular customer. (ii) Any person aggrieved by a decision relating to such a variance rendered by a public utility or municipal corporation rendering water service beyond its corporate limit! may file a complaint with the Public Utility Commission in accordance with the procedures established in the Public Utility Code. (Hi) Any person aggrieved by a decision relating to such a variance rendered by a water supply purveyor not subject to the jurisdiction of the Public Utility Commission may appeal the decision to the Commonwealth Drought Coordinator who shall render a final decision. Dublin Borough suggests the following methods to reduce consumption levels: ... (1) Identify and repair all leaky fixtures and water-using equipment. Special attention is to be given to equipment connected directly to the water line, such as processing machines, steam-using mt«*h'*ff, washing machines, . water-cooled air conditioners and furnaces. (2) Assure that the valves and solenoids* which control water flows, are shut off completely when the water-using cycle is not engaged* ' (3) Adjust water-using equipment to use the minimum.amount of water required to achieve its stated purpose. (4) Shorten rinse cycles for laundry machines as much as possible; lower water ' levels should be implemented wherever possible. (5) Temperature settings of hot water for showers should be set down at least 10 degrees to discourage lengthy shower taking. (6) Where plumbing fixtures can accommodate them, flow restricting or other water-saving devices should be installed. (7) Review usage patterns to see wnerc otner savings can be made. (8) For processing and cooling and other uses where possible, either reuse water or use from sources that would not adversely affect public water supplies. (9) Advise employees, students, patients, customers and other users, not to flush toilets after every use. Install toilet tank displacement inserts; place flow restrictors in shower heads and faucets; close down automatic flushes overnight. (10) Adjust flushometers and automatic flushing valves to use as little water as possible or to cycle at greater intervals. (11) Encourage water-consciousness by placing water-saving posters and literature where employees, students, patients and customers, etc. will have access to them.

WOOOI8. —• (h) Customers should read water meters on a frequent basis to determine consumption patterns. section 10. Water Use Restrictions for Hospitals and Health Care Facilities (a) Hospitals and health care facilities shall comply with all restrictions imposed on residential and non-residential water customers as may be applicable to each • individual institution, to the extent compliance will not endanger the health of the patients or residents of the institution. •• • • ," (b) Each hospital and health care facility shall survey its water usage patterns and requirements and implement such additional conservation measures as may be possible without endangering the health of patients or residents to achieve a 25 percent reduction in the institution's water usage. . • • • (c) Dublin Borough suggests the following methods to reduce. consumption levels: (1) Reduce laundry usage or services by changing bed linen, etc., only where necessary to preserve the health of patients or residents. (2) Use disposable food service items. (3) Eliminate, postpone or reduce, as may be appropriate elective surgical procedures during the period of the emergency. Section 11. Enforcement of Water Rationing Plan (a) The water supply purveyor will have lead responsibility for monitoring of compliance with this Water Rationing Plan. (b) The following provisions shall govern the implementation of temporary service interruptions: (1) In order to effectuate compliance with this Plan, the water supply purveyor is hereby authorized and required to plan and implement temporary service interruptions to all or part of its water supply system, as the water supply purveyor may deem appropriate, when any and/or all of the following conditions are determined by each water supply purveyor to exist, as to its water supply system: (i) A 25 percent reduction in system wide water usage has not been achieved, and/or (ii) The 25 percent reduction in system wide water usage has been achieved, but has failed to have a significant impact in extending limited water supplies, and/or (iii) Temporary service interruptions are necessary in order to further extend limited and/or dwindling water supplies. (2) In the event that the water supply purveyor determines that temporary service interruptions are necessary, the water supply purveyor shall notify its customers through the public media (newspapers, radio, telephone, and V f~, television) serving the customers of the water supply purveyor in its service \ IJ; territory, at least one d^y prior to the temporary service interruptions, that a planned, temporary service interruption is to be imposed. In addition, the water supply purveyor shall notify the Commonwealth Drought Coordinator, the local coordinator of emergency management, the Pennsylvania Emergency Management Agency, the Regional office of the Department of Environmental Resources, and the Pennsylvania Public Utility Commission, Bureau of Safety and Compliance, if the water supply purveyor is subject to the jurisdiction of the Commission. Such notice shallz (i) State the day or days when the planned, temporary service interruptions will occur; (ii) State the time(s) when such planned, temporary service interruptions will commence, and the timed) such interruptions will eease; (Hi) State whether the planned, temporary service interruptions are to be imposed on the entire system, or a part thereof, and, if only part(s) of the system will experience planned, temporary service interruptions, Identify the geographical boundaries within which the planned, temporary service interruptions will occur; and (iv) Advise all customers within the areas affected by planned, temporary service interruptions how to treat any water received from the system, for human consumption, during the period(s) of planned, • temporary service interruptions and for such additional time as may be necessary until full--pressure is restored to the system. (3) If the water supply purveyor imposes planned, temporary service interruptions as authorized and required by this Plan, it must provide for the continued delivery of water to health care facilities within the area(s) affected by such interruptions, by means of any adequate, alternative delivery measures that may be necessary.. \ (4) if the water supply purveyor implements planned, temporary service .interruptions, it must make provision, by any means possible, for the continued delivery of such water, as may be necessary, for the proper operation of sewage collection, treatment and disposal systems and facilities. (c) Any residential or non-residential water customer who exceeds the allotments established pursuant to this Water Rationing Plan will be subject to the following excess-use charge. (1) Dublin Borough is directed to collect an "excess-use charge" based on the amount by which a customer's use exceeds the water allotments established pursuant to the Local Water Rationing Plan, computed in accordance with the following schedule:

fl ft 00018-3 Excess Usage Per Month Charge for Excess First 2,000 gallons or $7.00 per 1,000 gallons portion thereof or portion thereof Each 1.000 gallons or $15.00 per 1,000 gallons portion thereof thereafter or portion thereof

Any monies collected by 'Dublin Borough through excess-use charges shall not be accounted for as income to the Borough, but shall be placed by the Borough in a reserve account. The disposition of funds shall be carried out by the direction of the Secretary of the Department.

(d) In addition to the excess-use charge, non-compliance with the Water Rationing Plan will result in the following: (1) For the first excess use, a warning of possible discontinuation shall be issued to the customer by the water supply purveyor. (2) For the second or subsequent excess use, the water supplier may interrupt or shut-off service to the customer for a period not to exceed 48 hours, or, if the customer provides access, the water supplier may install a flow restrictor in the customer's service line for the duration of the emergency. The cost incurred by the water purveyor to interrupt or shut-off and reinstate service, or to install and remove a flow restrictor, shall be assessed to the water customer by the water purveyor. (e) Each water purveyor is authorized to alter meter reading schedules to assure adequate monitoring of compliance with this Plan. (0 Any customer or other person aggrieved by a decision or action by a water purveyor imposing an excess-use charge or other remedy for non-compliance with the requirements of this Plan may proceed in accordance with the following provisions: (1) Each water purveyor shall adopt procedures which provide an opportunity for the customer or aggrieved party to rebut the finding of a violation, or evidence of circumstances beyond the customer's control which resulted in the violation. Each water purveyor shall keep a record of evidence presented regarding disputed violations, and shall provide the customer or aggrieved party with a written notice of the purveyor's final decision and action in such cases.

flftOOOISl. (2) Any person aggrieved by the final decision or action of Dublin Borough may file an appeal with the Common Pleas Court in the county where the water service is provided, in accordance with the provisions and procedures of the Local Agency Law, 2 Pa. C.S. Subsection 551-555,751-754. rtion 12. Penalties / • Any person who violates the provisions of this Plan, who fails to carry out duties and responsibilities imposed by this Plan, or who impedes or interferes with any action undertaken or ordered pursuant to this Plan, shall be subject to the penalties provided by law under 35 Pa*. C.S. Subsection 7707. lotion 13. Amendment of the Plan Any water purveyor, county or municipality covered under the provisions of this Plan nay, at any time, submit to the Pennsyl- vania Emergency Management Agency proposed additions to or amendments of this Plan. Such amendments shall be expeditiously considered by the Emergency Management Council, and shall take affect upon adoption by the Council. rtion 14. Effective Period i .This Plan shall remain in effect until terminated by Resolution of Dublin Borough. • :tion 15. Effective Date This Plan shall take effect imir.edlately upon adoption by Dublin Borough. '.'

~~flftOOO/8'5 L~~

~~BOROUGH OF DUBLIN ORDINANCE NO.~~

~~ORDINANCE AMENDING DUBLIN BOROUGH ORDINANCE NO. 148 IMPOSING BAN ON NON-ESSENTIAL WATER USAGE WITHIN BOROUGH _ ' - '~~

~~BE IT ORDAINED AND ENACTED that Dublin Borough Ordinance No. 148 be and hereby is amended and revised to read as follows:~~

WHEREAS, Borough recognizes an actual and threatened shortage of water to the residents of the Borough of Dublin and the imperative need to implement and continue concerted measures to conserve water within the Borough; and

~~WHEREAS, the Delaware River Basin Commission has recently recommended the Borough to impose mandatory restrictions on water use within the Borough; and~~

~~WHEREAS, the Borough Council desires to take immediate steps to protect its water supply, and conserve supplies to meet the most essential health and safety needs of its citizenry.~~

NOW, THEREFORE, be it ordained, in accordance with the •* Authority granted under the provisions of the Borough Code that the following ReguLfLfeiwimpQ^i^iy. immediately become effective and apply to all residents of the Borough.

~~•1ROOOI86 c~~

Section .1 Definitions Any water - any type of water, including fresh water, well water, brackish water, waste water or reclaimed waste water. Well water - water from public or private wells situated within the Borough of Dublin. Brackish water - water containing more than 1000 parts per million of dissolved salts. Delaware River Basin Commission - the Commission created by the Delaware River Basin Compact, Act of July 7, 1961, P.L. 518, 32 P.S. §815.101. Fresh water - water withdrawn from surface or ground r which has not been previously used, other than brackish water. Reclaimed water - waste water which has been treated to allow reuse. Waste water - water which has been previously used for industrial, municipal, domestic, or other purposes, and has not been returned to the surface or ground water source.

~~Section .2 Scope These regulations- shall apply to all wattTr uses within the Borough of Dublin, including both users of public and private wells.~~

~~/.F.OGQI87 c . . . <~~

Section .3 Prohibition of Non-Essential Uses The following water uses are declared non-essential and are prohibited within the Borough: (a) The use of well water for watering lawns; ^ (b) The use of well water for irrigation and watering of outdoor gardens, landscaped areas, trees, shrubs, or other outdoor plants, except: (1) agricultural irrigation for the production of food and fiber, or the maintenance of livestock; (2) the use of well water by commercial nurseries at the minimum level necessary to maintain stock, to the extent that sources of water, other than fresh water, adequate to supply needs are not available or feasible to use; (3) the use of well water at the minimum rate necessary to implement revegetation following earth moving, where such revegeation is required pursuant to an approved erosion and sedimentation control plan adopted pursuant to State law or regulation, to the extent that sources of water, other than -Srocyi'l h water, adequarte to supply needs are not available or feasible to use; (c) The use of well water for washing paved surfaces such as streets, roads, sidewalks, driveways, garages, parking areas, tennis courts and patios; (d) The use of any-water for ornamental purposes including fountains, artificial water falls and reflecting pools;

flROOO/88 (e) The use of well water for washing or cleaning of automobiles, trucks, other motor vehicles and trailers, except; (1) the use of water by commercial car washers; (2) the use of water for cleaning of construction, public transporation or government vehicles where absolutely necessary to preserve the proper functioning of the vehicle; (f) The use of water from a fire hydrant (including sprinkler caps) by a municipality, contractors, or any other person for any purpose, except; (1) firefighting, or (2) health protection purposes specifically approved by the Borough Manager; (g) The use of fire hydrants by fire companies for testing fire apparatus and for fire department drills except as deemed necessary in the interest of public safety and specifically approved by the Borough Council; (h) The use of water for flushing sewers or hydrants by municipalities or any other person except as specifically found necessary and approved in the interest of public health or safety by the Borough ;£?./Ko(j (i) The serving of water in restaurants, clubs, or eating places unless specifically requested by a customer; (j) The use of any water to refill ejr-conditioning cooling towers after draining, except; (1) refilling for startup at the beginning of the cooling season; '

~~-4- AR000189 C . (~~

(2) make-up of water during the cooling season; or (3) refilling specifically approved by the Borough Manager where the system has been drained for health protection or repair purposes. (k) The use of well water to fill private residential swimming pools, except; swimming pools operated by health care facilities used in relation to patient care and rehabilitation, upon approval by Borough Council.

Section .4 Penalties and Enforcement (a) Any person, partnership or corporation who or which shall violate the provisions of this Ordinance shall, upon conviction thereof, in a summary proceeding, be sentenced to pay. a fine of not more than $1,000.00. In default of payment of the fine, such person, the members of such partnership, or the officers of such corporation, shall be liable for imprisonment for not more than sixty days. Each day that a violation is continued shall constitute a separate offense. All fines collected fpr the violation of the Ordinance shall be paid over to Borough. (b) Such fines and penalties may be collected by suit or summary proceeding brought in the name of the Borough ** before any district justice.

~~AROOOI90 c~~

~~Section .5 Effective Period These regulations shall remain in effect until terminated by action of the Dublin Borough Council.~~

Section .6 Administration ; The Borough Manager shall be charged with the duty and responsibility of administering the provisions of this Ordinance. In the event that a question shall arise which is not clearly covered by the express provisions of this Ordinance the Borough Manager shall interpret this Ordinance in light of the purpose and intent of this Ordinance and the effect that any proposed usage of well water would have on the purpose of con- serving water for the benefit of all Borough residents. Any person aggrieved by the interpretation and decision of the Borough Manager may request a hearing before Borough Council.

~~Section .7 Effective Date These revised regulations shall take effect immediately upon adoption by the Dublin Borough Council.~~

~~THEODORE P. KOHL (~~

~~LUTHER L. WOUSlDLER~~

~~Approved thi^*Jff?>'/gay/of .geprfiember. 1984.~~

~~flftOOOl91 BOROUGH OF DUBLIN ORDINANCE HO.~~

~~DUBLIN BOROUGH ORDINANCE IMPOSING IMMEDIATE MANDATORY BAN OF NON-ESSENTIAL WATER USAGE WITHIN BOROUGH~~

'>, Borough recognizes an actual and threatened shortage of water to the residents of the Borough of Dublin and the imperative need to Implement and continue concerted measures to conserve water within the Borough; and t WHEREAS, the Delaware River Basin Commission has recently • 'recommended the Borough to impose mandatory restrictions on -water use within the Borough; and WHEREAS, the Borough Council desires to take immediate steps to protect its water supply, and conserve supplies to meet the most essential health and safety needs of its citizenry.

~~NOW, THEREFORE, be it ordained, in accordance with the~~

~~Authority granted under the provisions of the Borough Code that the following Regulations shall immediately become effective and apply to all residents of the Borough,~~

Section .1 Definitions Any water - any type of water, including fresh water, brackish water, waste water or reclaimed waste water. Arboretum - a place where trees, shrubs, and plants are cultivated for scientific and educational purposes. Brackish water - water containing more than 1000 pares . per million of dissolved salts. Delaware River Basin - the area of drainage into the Delaware River and its tributaries, including Delaware Bay. Delaware River Basin Commission - the Commission created by the Delaware River Basin Compact, Act of July 7, 1961, P.L. 518, 32 P.S. S 815.101. • Fresh water - water withdrawn from surface or ground water . which has not been previously used, other than brackish water. Reclaimed water -»waste water which has been treated to allow reuse. Waste water - water which has been previously used for industrial, municipal, domestic, or other purposes, and has not been returned to the surface or ground water source. Section .2 Scope • s These regulations shall apply to all water uses within the Borough of Dublin, including both users of public and private wells. •

~~-2-~~

-flffQOO/93 Section .3 Prohibition'of Non-Essential Uses The following water uses are declared .non-essential and are prohibited wit.nin the Borough: (a) The use of any water for watering of lawns; (b) The use of fresh water for irrigation and watering of outdoor gardens, landscaped areas, trees, shrubs, or other outdoor plants, except: (1) agricultural irrigation for the production of food and fiber, or the maintenance of livestock; (2> the use of fresh water by commercial nurseries at the minimum level necessary to maintain stock, to the extent that sources of water, other than fresh water, i adequate to supply needs are not available or feasible to use; (3) the use of fresh water by arboretums and public gardens of national,, state, or regional significance where necessary to preserve specimens, to the extent that sources of water, other than fresh water, adequate to supply needs are not available or feasible to use.

~~(4) the use of fresh water at the minimum rate necessary to implement revegetation following earth moving, where such revegetation Is required pursuant to an approved~~

-3- erosion and sedimentation control plan adopted pursuant to State law or regulation, to the extent that sources of water, other than fresh water, adequate to supply needs are not •* available or feasible to use; (c) The use of fresh water for watering any portion of golf courses, except for greens; (d) The use of any water for washing paved surfaces such as streets, roads, sidewalks, driveways, garages, parking areas, tennis courts and patios; (e) The use of any water for ornamental purposes including fountains, artificial, water falls and reflecting pools; •

(f) Hie use of any water for washing or cleaning of * automobiles, trucks, other motor vehicles and trailers, except; Xl) the use of water by commercial car washers; (2) the use of water for cleaning of construction public transportation or government vehicles where absolutely necessary to preserve the proper functioning of the vehicle; (g) The use of water from a fire hydrant (including sprinkler caps) by a municipality, contractors, or any other person for any purpose, except;

-4- flROQO/95 (1) The use of water to fill private residential swimming pools, except; swimming pools operated by health car facilities used in relation to patient care and rehabilitation upon approval by Borough Council. (my The use of water to fill any public or private swimming pool which does not have filtration equipment allowir for continued use and recycling of the water over the swimming season. Section .4 Penalties and Enforcement (a) Any person, partnership or corporation who or which shall violate the provisions of this Ordinance shall, upon convict thereof, in a summary proceeding, be sentenced to pay a fine not more than $1,000.00. In default of payment of the fine, such person, the members of such partnership, or the officers of such corporation, shall be liable for imprisonment for not more than sixty days. Each day that a violation is continued shall "constitute a separate off ens e. All fines collected for the violation of the Ordinance shall be paid over co Borough. (b) Such fines and penalties may be collected by suit or summary proceeding brought in the name of the Borough before district justice. Section .5 Effective Period These regulations shall remain in effect until termina by action of the Dublin Borough Council. (1) firefighting, or (2) health protection purposes specifically

approved by the Borough Manager; (h) The use of fire hydrants by fire companies for testing fire apparatus and for fire department drills except as deemed necessary in the interest of public safety and specifically approved by the Borough Council;- (i) The use of water for flushing sewers or hydrants by municipalities or any other person except as specifically found necessary and approved in the interest of public health or safety by the Borough; (j) The serving of water in restaurants, clubs, or * eating places unless specifically requested by a customer;

(k) The use of any wat&r to refill air-conditioning cooling towers after draining, exc ept: (1) refilling for startup at the beginning of the cool-ing season; (2) make-up of water during the cooling season; or (3) refilling specifically approved by the Borough Manager where the system has been drained for health • protection or repair purposes. , .

~~-5- » 3ROOQJ97 Section .6 Effective Date These regulations shall take effect immediately upon adoption by the Dublin Borough Council.~~

~~BOROUGH OF DUBLIN ATTEST:~~

~~THEODORE P. KOHL~~

~~LUTHER L. WONSIDLER~~

~~Approved this 2nd day of July, 1984~~

~~FRANK J. RYMDEIKA~~