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HomeMy WebLinkAboutNCD986175644_20000705_Davis Park Road TCE Site_FRBCERCLA G C_General Correspondence 1999 - 2000-OCRF4-cui)'\ 1 , 2,' IN+'\ c-,)i • . . -~-, UNITED STATES ENVIRONMENTAL PROTECTION AGENCY .. REGION 4 Mr. and Mrs. Wayne Stevenson 2500 Skyland Drive Gastonia, North Carolina 28052 Dear Mr. and Mrs. Stevenson, ATLANTA FEDERAL CENTER 61 FORSYTH STREET ATLANTA, GEORGIA 30303-8960 July 5, 2000 RECEIVED 'JUL O 7 2000 SUPERFUNO SECTION I hope this summer finds you well. As you may know I am the EPA project manager for the Davis Park Road TCE Site, where EPA's contractors are installing water lines as well some carbon filters at those homes which are or may become impacted by the groundwater · contamination in the area. Earlier this year EPA offered to provide you with either a connection to the water line or a carbon filter and one year of maintenance. This was based on the location of your home over the area of actual or potential groundwater contamination. You elected to receive the carbon filter. It has since come to our attention that the well from which you receive y01.J'drinking water is the community well located on Briar Oak Drive. This well is not in the area of concern for Site-related contamination, and is considered to be "safe." EPA should not have offered you the filter installation option, since there is no Site-related contamination to "filter" from your water supply. Therefore EPA is not planning at this time to install a filter at your home. I apologize for this misunderstanding. Please feel free to call me if you would like to discuss this further, or if you would like to reconsider the opportunity to connect to City water services. Also, please contact me if for some reason I am still not correctly understanding the location of the source of your well water. I can be reached at 1-800-435-9233. Sincere_,~>-j' ~--· fl " •;,+-, C\)}-50---r v,,\V v Philip H. Vorsatz, Chief NC Site Management Section cc: "Doc" Thompson, Gaston County Health Department Internet Address (URL)• http://www.epa.gov Recycled/Recyclable • Pnnted with Vegetable Oil Based Inks on Recycled Paper (Minimum 30'% Postconsumer) Date: To: From: Subject: Phil: • MEMORANDUM November 22, 2000 Phil Vorsatz, EPA Flip Bombardier, City of Gastonia Davis Park Water Line Extension Project • I apologize for the delay in getting back with you, but I have since talked with the Contractor (Troy Reeves) and the City's (Building) Inspection Department. (I am awaiting a call back from Doug Mauney of Weston.) However, the following information is my understanding of the concerns to date and is herein provided. Trans State (through their sub-contractor) has applied for 67 plumbing permits for the subject project. · There are six (6) additional ones (properties) without permits that we're checking on; these may have been properties that went with a filtering system in lieu of a water hook-up. The 67 permits are ready to be picked up. Unfortunately, the contractor will also have to pay for these; City staff cannot waive said fees. · In addition, in. order to verify that the (service) lines have been installed to State (plumbing) Code, each connection point (at both ends) will need to be uncovered and inspected. To do otherwise could shift a potential liability to the City for accepting non-inspected work. It is my understanding that the NC Plumbing Code also requires a "cut-off' between the meter (box) assembly and the pressure reduction valve (PRV). Deleting such could again could place liability on the City for allowing non- conforming work. I regret that I couldn't provide more favorably information, but I also believe that it's in everyone's best interest (both EPA, Weston, and the City) to complete the work in accordance with the State Plumbing Code. This minimizes potential (future) liability to all three parties concerned. Please call if you need further information. As always, we appreciate the efforts of the EPA to jointly solve a community's water system concern(s). PC: Donald E. Carmichael, Director of Public Works/ Utilities Thorne A. Martin, Assistant City Engineer Margaret Pearson, Land Development Engineer David Dickson, Civil Engineer II Randy Murphy, Assistant Inspections Superintendent Doug Mauney, P.E., Roy F. Weston, Inc. H: \ word \epa_letterO 1.doc UNITE.ATES ENVIRONMENTAL PROTECTIO.GENCY~ 1 ~/J/ REGION 4 /i !)v'-" {)f-1 ATLANTA FEDERAL CENTER / \ .-f'1J,f)I I ·1~6 61 FORSYTH STREET __,) JI ~ ATLANTA. GEORGIA 30303-8960 imr IP',p.J(;;(I October I 2, 2000 [) 1 4WD-NSMB Mr. William Meyer, Director Division of Waste Management NCDENR 40 I Oberlin Road Suite 150 Raleigh, NC 27605 RECEIVED OCT 172000 SUPERFUND SECTIO~', SUBJECT: Supcrfund Preliminary Close Out Reports Dear Mr. Meyer: •.:.... EPA is pleased to announce the substantial completion ofremedial construction at four National Priorities List (NPL) Sites in North Carolina. The EPA Waste Management Division Director signed the enclosed Superfund Preliminary Close-Out Reports for these Sites during September 27-29, 2000. Although, minor punch list items and operation and maintenance of the groundwater treatment systems remains to be completed, these sites are considered by EPA to have achieved the status of Construction Complete. The Sites include: 111•1~111 Davis Park Road TCE Site Gastonia Gaston NC 9/27/2000 Potter's Septic Tank Service Pits Site Sandy Creek Brunswick NC 9/27/2000 General Electric/Shepherd Farm Site East Flat Rock Henderson NC 9/28/2000 JFD Electronics/Channel Master Site Oxford Granville NC 9/29/2000 If you have any questions, I can be reached at (404) 562-8789. s;,re0(¥8- Philip Vorsatz, Chief North Carolina Site Management Section Enclosures ( 4) Internet Address (URL)• http://www.epa.gov Recycled/Recyctable • Printed with Vegetable OH Based Inks on Recycled Paper (Mrnrmum 30% Pos1consumen • . · ....... _ • SUPERFUND PRELTh1INARY CLOSE-OUT REPORT DA VIS PARK ROAD TCE SITE GASTONIA, NORTH CAROLINA NCD986175644 I. INTRODUCTION 1This Preliminary Close Out Report documents that the U.S. Environmental Protection Agency (EPA) completed construction activities at the Davis Park Road TCE Site (Site) in accordance with Close Out Procedures for National Priorities List Sites (OSWER Directive 9320.2-09A-P). EPA and the North Carolina Department of Environment and Natural Resources (State) conducted a pre-final inspection on September 13, 2000, and determined that the contractors have constructed the remedy in accordance with remedial design (RD) plans and specifications, and no further response is anticipated. EPA and the State have initiated the activities necessary to achieve performance standards and Site completion. Il. SUMMARY OF SITE CONDITIONS Background The Davis Park Road TCE Site includes approximately 20 acres of residential homes and private businesses in unincorporated Gaston County, southwest of the City of Gastonia. T_he Site consists of a contaminated soil area that was reporteQly behind an automobile transmission shop located at 2307 Davis Park Road, and a plume of contaminated groundwater that emanates from this property and extends south along Davis Park Road to Blackwood Creek. The plume of contaminated groundwater underlies residences at the Site along the plume's entire horizontal extent. A majority of homes within the Site area obtain their water from private or community wells. Tetrachloroethene (PCE), Trichloroethene (TCE), 1, 1-Dichloroethene (I, 1, -DCE), Chloroform, and Methyl-ter-butyl ether (MTBE) are the groundwater contaminants of concern identified in the ROD. EPA proposed the Site to the National Priorities List (NPL) on July 28, 1998, and added it to the final list on January 19, 1999. Remedial Construction Activities After the Remedial Investigation and Feasibility Study (RI/FS) were completed, on September 29,' 1998, the Director, Waste Management Division, Region 4, signed the Record of Decision (ROD) for this Site. The major components of the selected remedy are: • Reduction of exposure to contaminated groundwater by connection of homes, churches, and businesses in the Davis Park Road Site area to the City of Gastonia public water supply; • . ·.: · .... _ • 2 • Optional wellhead treatment for affected private wells; • Natural attenuation to restore the contaminated aquifer to the lower of either the Maximum Contaminant Levels (MCLs) or North Carolina Part 2L Drinking Water Requirements. The primary attenuation processes occurring at the Davis Park Road TCE S_ite are dispersion and intrinsic biodegradation; ) • Continued analytical monitoring for contaminants in groundwater; and • Collection of additional information during the first year of the Remedial Design effort in order to support the predicted dispersion and intrinsic biodegradation rates for the contaminated groundwater. · · · The ROD also contained a contingency remedy which would be implemented if the data collected during the natural attenuation study did not substantiate that natural attenuation would achieve remedial goals. The contingency remedy specified groundwater pumping, using a minimum of three extraction wells, with treatment of contaminated groundwater using activated carbon. The RI/FS concluded that soil contamination at the probable source area for the groundwater plume was no longer at levels warranting further ·action. It was also concluded that migration of the groundwater plume toward Blackwood Creek would not result in a measurable release of Site-related contaminants to the creek. ·' Remedial goals for groundwater were selected as the most conservative of the chemical-. specific ARARs or the health-based risk goals and are: CONT AMIN ANTS OF MAXIMUM VALUES REMEDIAL GOALS CONCERN MEASURED (ug/1) (ug/1) Tetrachloroethene (PCE) 14 I Trichloroethene (TCE) 34 2.8 I, 1-Dichloroethene 3.8 7 (I, 1,-DCE) Chloroform 40 I Methyl-ter-butyl ether 709 200 (MTBE.) • • 3 On July 23, 1999, EPA processed a work assignment under one of our available Remedial Action Contracts (RAC) for the RD. As part of the RD a final list of homes to be connected to the public water supply system or to receive carbon filters was determined. The remedial design of the water lines and carbon filters was determined to be substantially complete in December 1999. After obtaining funding, on February 16, 2000, EPA processed a work assignment under the same Remedial Action Contract to begin the Remedial Action (RA). Actual on-site construction of the water lines began on May 15, 2000. RA construction included approximately 5625 linear feet of 12-inch, 8-inch and 6-inch ductile iron pipe, plus related service lines and appurtenances. Roads, rights-of-way, and private properties were returned to undisturbed conditions. A total of sixty three (63) residences were connected to the City of Gastonia water system and are now receiving water from that system. EPA installed carbon filters at five ( 5) residences where the homeowners would not agree to be connected to the public water supply system. Two homeowners with private wells in the Site area elected not to be connected to the public water supply system or receive a filter system ( one of whom had initially agreed to receive public water). Water servict; is available to these two homes via the EPA constructed water lines should the homeowners change their minds in the future, however the physical connection would be their responsibility. Other changes from the RD included the addition of one home not previously identified as impacted by the Site, the deletion of one home already connected to City water, and the deletion of two homes connected to a · community well not impacted by the Site. EPA also physically abandoned 19 private wells by plugging with a cement grout. EPA physically abandoned only those wells where the homeowners agreed to have them plugged. With the conditional concurrence of local Public Health Department, other wells were disconnected from the homes but left operational for watering gardens, etc. A sampling effort for the natural attenuation study was conducted in November 1999. A thorough review of the data, review of all historical data, and predictive analyses were conducted and summarized in an EPA Region 4 Memorandum Report dated September 25, 2000. The report focuses on TCE and PCE as the critical contaminants of concern. TCE concentrations are projected to diminish to less than the 5 ug/1 Safe Drinking Water Act Maximum Contaminant Level (MCL) in 12 years for the worst (slowest) estimate. Data from most wells suggest that TCE concentrations in most wells will be less that the MCL in about 5 years. Remedial goals for this Site are based on North Carolina's groundwater standard for TCE, which at 2. 8 ug/1 is lower than the MCL. A worst case estimate is that it will take 26 years to achieve concentrations below that level in all parts of the plume. However, since the average groundwater travel time to Blackwood Creek is estimated at 13 years, this estimate is probably overly conservative. • • 4 PCE concentrations are expected to diminish to less than the MCL (5 ug/1) in 15 years assuming extreme worst case conditions. The remedial goal for PCE for this Site, 1.0 ug/1, is based on North Carolina's groundwater standard and the minimum detection level. A worst case estimate is that it will take 43 years to achieve concentrations below that level in all parts of the plume. Since the estimated contaminant migration rate from the area of highest PCE contamination to Blackwood Creek is approximately 7 -10 years, this indicates that our worst case estimates for PCE may also be overly conservative. The estimated time frames for natural attenuation are longer than, but basically consistent with the ROD assumption and eliminates the need for the contingency remedy. EPA currently plans to monitor groundwater from identified private wells and monitoring wells quarterly for the next two to three years, for wells with limited historical data, and then annually thereafter for all wells, until remedial goals are demonstrated to be achieved. Monitoring frequency will be reevaluated as needed. ' The City of Gastonia has agreed in writing to assume responsibility for operation and maintenance of the water lines, up to the water meter, after EPA completes the remedial action construction. The homeowners will become responsible for maintenance of their service lines and pressure reducing valves. EPA has agreed to maintain the five filter systems for a minimum of one year from installation, including periodic testing of the pre-and post-filter water quality during the first year. EPA will evaluate the efficiency of the filters to remove Site-related contaminants and replace filter media as needed.· EPA may con_duct some additional testing at these wells as a part of the long term sampling of the -groundwater plume. The homeowners have agreed to assume responsibility for continued maintenance of the filters after the first year. Remaining activities to be completed by the EPA contractor include periodic adjustments and/or modifications to the carbon filters, including changing of filter media and testing to maintain optimum performance during the first year after installation. Also, as outlined above, implementation of the long term groundwater monitoring plan will also take place. EPA and the State have not yet concurred on the operational and functional (O&F) period, however, the City of Gastonia has agreed in writing to assume operation and maintenance responsibility for the water lines at that time. The homeowners have agreed to assume primary responsibility for operation and maintenance of the water service lines and of the five carbon filters. No activities using removal authority were conducted at this Site. • • 5 ID. DEMONSTRATION OF CLEANUP ACTMTY QUALITY ASSURANCE AND QUALITY CONTROL EPA and the State reviewed the remedial action contract and construction for compliance with quality assurance and quality control (QNQC) protocols. Construction activities at the Site were determined to be consistent with the ROD, RD plans and specifications, and the RD and RA stateme,its of work issued to the RAC contractor. Plans and specification for the water line construction were also made consistent with City of Gastonia water system requirements and State requirements for erosion control. All confirmatory inspections, testing, and evaluations of materials and workmanship were performed in accordance with the construction drawings and technical specifications. Construction quality assurance was performed by the RAC contractor, which maintained a constant on-site presence during the water line construction. The City of Gastonia construction inspector maintained a part-time on-site presence and oversaw the water line testing required for acceptance by the City. The EPA project manager visited the Site during construction activities to review construction progress and adherence to the QNQC protocols, safety requirements, drawings, and specifications. Changes were properly documented and will be reflected in the as- built plans. The Quality Assurance Project Plan (QAPP) incorporated all EPA and State QNQC procedures and protocol. EPA procedures and analytical methods were used for all samples collected during RD and RA activities. EPA and the ·state determined that analytical results are accurate to the degree needed. Sampling for the November 1999 natural attenuation study was conducted as specified in the USEP A, Region 4, Science and Ecosystem Support Division, Environmental Investigations Standard Operating Procedures and Quality Assurance Manual, May 1, 1996. All analyses were conducted as specified in the USEP A, Region 4, Science and Ecosystem Support Division, Analytical Support Branch Operations and Quality Control Manual, December 1997. • • 6 IV. ACTIVITIES AND SCHEDULE FOR SITE COMPLETION The following activities remain for the Davis Park Road TCE Site: . Task Estimated Completion Responsible Organization 1) Cpmplete Final Inspection 11/15/2000 EPNState 2) Finalize Groundwater 12/15/2000 EPNState Monitoring Plan and Initiate Work Assignment 4) Approve Interim RA Report 12/15/2001 EPNState 4) Determine Remedy O&F 09/15/2001 EPNState and Officially Transfer Responsibility to the City and homeowners 5) Five-Year Review 09/15/2005 EPNState 5) Achieve Clean-up Levels/ 06/30/2043 . ' EPA /State Approve Final RA report 6) Approve final Close Out 09/15/2043 EPNState Report 7) Deletion from NPL 03/31/2044 EPA /State V. SUMMARY OF REMEDIATION COSTS The original cost estimate to implement the remedial action described in the ROD was $3,873,299 (net present worth). Costs were estimated for an anticipated 30-year time period (assuming groundwater monitoring may need to continue that long) and a discount rate of3.5 % was used ii) th{ ROD estimate. More detailed cost estimate documentation can be found in the Feasibility Study for the Site. The estimated final RA cost for the water lines, carbon filters and well abandonment is $725,000. This does not include the long-term groundwater monitoring, for which EPA has yet to contract. It is estimated that the final total present worth costs for the RA will be significantly less than the ROD estimate. • • 7 VI. FIVE-YEAR REVIEW Upon completion of this remedy no hazardous substances will remain at the Site above levels that allow unlimited use and unrestricted exposure after the completion of the remedial action. However, it is expected that it will take greater than five years to achieve the groundwater clean-up goals. As provided in the current guidance on Five Year Reviews: OSWER Directive 9355. 7-92, Structure and Components of Five-Year Reviews, May 23, 1991, OSWER Directive 9355.702A, Supplemental Five-Year Review Guidance, July 26, 1994, and the Second Supplemental Five-Year Review Guidance, December 21, I 995, EPA will conduct a five-year review for this Site. The Five-Year Review Report will be completed prior to September 27, 2005 (five years after completion of this Preliminary Close Out Report). Richard D. Green, Director Waste Management Division Date UNITE.ATES ENVIRONMENTAL P~;;~CTIO.GENCY ·REGION 4 David Nelson, P.G. WESTON Site Manager Roy F. Weston, Inc. Suite 200 5405 Metric Place ·1 Norcross, Georgia 30092-2250 ' Dear ~on~J____ ATLANTA FEDERAL CENTER 61 FORSYTH STREET ATLANTA, GEORGIA 30303-8960 September 27, 2000 RECEIVE" SEP 2 ti 2000 SUPERFUND SECTIO This letter serves a my formal approval of the Final Remedial Design for the Davis Park Road TCE Site, US EPA Contract 68-W7-0026, Work Assignment 043-RDRD-04PN. Final remedial design changes were submitted with your letter of August 14, 2000. Approval has also been obtained from the North Carolina Department of Environment and Natural Resources (copy enclosed). I very much appreciate all your good work on· this project If you should have any questions please call me at (404) 562-8789 or email at: vorsatz.philip@epa.gov. Philip H. Vorsatz, PE., Chief North Carolina Site Management Section Enclosure lntemet Address (URL) • http://www.epa.gov Recycled/Recyclable. Prin1ed with Vegetanle 011 Based lnKs on Recycled Paper (Minimum 30% PostconsumerJ • • EXPLANATION OF SIGNIFICANT DT.FFERENCE DA VIS PARK ROAD TCE SITE GASTON COUNTY, NORTH CAROLINA NCD986175644 1.0 lNTRODUCTION Section l l 7(c) of the Comprehensive Environmental Response, Compensation, and Liability Act of 1980, 42 U.S C. § 96 l 7(c), as amended (CERCLA), and Section 300.435(c)(2)(i) of the National Oil and Hazardous Substances Pollution Contingency Plan (NCP), 40 C.F. R. Part 300.435(c)(2)(i), require that the Environmental Protection Agency (EPA) publish an Explanation of Significant Difference (ESD) when significant changes in a Superfund remedy occur after the Record of Decision (ROD) is signed. The purpose of this ESD is to notify all parties of concern that the EPA, as the lead agency, with the support of North Carolina Department of Environment and Natural Resources (NC DENR), is announcing a significant change to the remedy for the Davis Park Road TCE Site (Site), located in Gaston County, North Carolina. The ROD for this Site was signed on September 29, I 998. This change is being made based on information collected during the Remedial Design and the Remedial Action (RD/RA). The information collected indicates that natural attenuation will achieve groundwater clean-up goals for this Site, and that implementation of an active groundwater clean-up remedy is not needed. The information collected also indicates that it may take longer than previously estimated for groundwater to reach remedial clean-up goals. As required by Sections 300.435(c)(2)(i)(A) and 300.825(a)(2) of the NCP, a copy of this ESD will be added to the Site Administrative Record and Information Repository. The Administrative Record and Information Repository can be found in the Gaston County Public Library in Gastonia, North Carolina, and in the US EPA Region 4 Record Center in Atlanta, Georgia. Both addresses are provided in Section 7.0 of this document. The public is encouraged to review the Administrative Record and the Information Repository at either of these locations. 2.0 SITE HISTORY, CONTAMINATION, AND SELECTED REMEDY The Davis Park Road TCE Site includes approximately 20 acres o[residential hollies and private businesses in unincorporated Gaston County, southwest of the City of Gastonia. The Site consists of a contaminated soil area that was reportedly behind an automobile transmission shop located at 2307 Davis Park Road, and a plume of contaminated groundwater that emanates from this property and extends south along Davis Park Road to Blackwood Creek. The plume of contaminated groundwater underlies residences at the Site along the plume's entire horizontal extent. A majority of homes within the Site area obtain their water from private or community wells. Tetrachloroethene (PCE), Trichloroethene (TCE), I, 1-Dichloroethene (I, 1,-DCE), Chloroform, and Methyl-ter-butyl ether (MTBE) are the groundwater contaminants of concern identified in the ROD. • • 2 The ROD also included natural attenuation of groundwater contaminants as an integral part of the remedy for the Site, and contains an estimate of seven years to achieve remedial goals through natural attenuation. The ROD specified that groundwater sampling, including parameters_ necessary to complete a natural attenuation study, would be conducted as part of the RD phase of this project, and that a natural attenuation review would be conducted and a report prepared. The ROD contained a contingency remedy, to add pumping and active treatment of the contaminated groundwater to the selected remedy, if data collected during the natural attenuation study did not substantiate the occurrence of natural attenuation. The Rl/FS concluded that soil contamination at the probable source area for the groundwater plume was no longer at levels warranting further action. It was also concluded that migration of the groundwater plume toward Blackwood Creek would not result in a measurable release of Site-related contaminants to the creek. 3.0 BASIS FOR THIS DOCUMENT AND DESCRIPTION OF SIGNIFICANT DIFFERENCES A sampling effort for the natural attenuation study was conducted in November 1999. A thorough review of the data, review of all historical data, and predictive analyses were conducted and summarized in an EPA Region 4 Memorandum Report dated September 25, 2000. The report focuses on TCE and PCE as the critical contaminants of concern. TCE concentrations are projected to diminish to less than the 5 ug/1 Safe Drinking Water Act Maximum Contaminant Level (MCL) in 12 years for the worst (slowest) estimate. Data from most wells suggest that TCE concentrations in most wells will be less that the MCL in about 5 years. Remedial goals for this Site are based on North Carolina's groundwater standard for TCE, which at 2.8 ug/1 is lower than the MCL. A worst case estimate is that it will take 26 years to achieve concentrations below that level in all parts of the plume. However since the average groundwater travel time to Blackwood Creek is estimated at 13 years, this estimate is probably overly conservative. PCE concentrations are expected to diminish to less than the MCL (5 ug/1) in 15 years assuming extreme worst case conditions. The remedial goal for PCE for this Site, 1.0 ug/1, is based on North Carolina's groundwater standard and the minimum detection level. A worst case estimate is that it will take 43 years to achieve concentrations below that level in all parts of the plume. Since the estimated contaminant migration rate from the area of highest PCE contamination to Blackwood Creek is approximately 7 to IO years, this indicates that our worst case estimates for PCE may also be overly conservative. The estimated time frames for natural attenuation are longer than projected in the Record of Decision. However the conclusion that natural attenuation will achieve remedial goals, and that contaminant levels in groundwater will reach Safe Drinking Water Act Maximum Contaminant levels in an even shorter time frame, remains consistent with the ROD and eliminates· the need for the contingency remedy. Cost estimates are not changed based on this significant difference. The estimated costs in the 1998 ROD are based on 30 years of groundwater monitoring. • • 3 EPA currently plans to monitor groundwater from identified private wells and monitoring wells quarterly for the next two to three years, for wells with limited historical data, and annually for all wells, until remedial goals are demonstrated to be achieved. Monitoring frequency will be reevaluated as needed. Sample collection and data review will follow EPA' s guidelines for . monitored natural attenuation. 4.0 SUPPORT AGENCY COMMENTS The NC DENR Superfund Section was given the opportunity to review this ESD. They concur with this modification to the remedy. 5.0 STATUTORY DETERMINATIONS The modified remedy satisfies CERCLA Section 121. EPA and NC DENR believe that the changes made to the remedy have not decreased the protectiveness for human health and the environment, comply with Federal and State requirements that are applicable or relevant and appropriate to the Remedial Action, and are cost-effective. In addition, the revised remedy utilizes permanent solutions and alternative treatment technologies to the maximum extent practicable for this Site. 6.0 PUBLIC PARTICIPATION COMPLIANCE As required by sections 300.435(c)(2)(i)(A) and 300.825(a)(2) of the NCP, this ESD will be added to the Administrative Record for the Davis Park Road TCE Superfund Site. Copies of the Administrative Record are kept at the two locations listed below: Gaston County Public Library I 555 E. Garrison Boulevard Gastonia, North Carolina 28054 (704) 868-2167 Hours: Mon.-Thurs. 9 am - 9 pm Fri./Sat. 9 am -6 pm US EPA Region 4 Record Center 61 Forsyth Street, SW Atlanta, Georgia 30303 (404) 562-8946 Hours: Mon. -Fri. 8 am -4:30 pm As required by Section 300.435(c)(2)(i)(B) of the NCP, a notice of availability and a brief description of the ESD will be placed in the Gaston Gazette newspaper. Richard D. Green, Director Waste Management Division Date • • SUPERFUND PRELil\HNARY CLOSE-OUT REPORT DA VIS PARK ROAD TCE SITE GASTONIA, NORTH CAROLINA NCD986175644 I. INTRODUCTION This Preliminary Close Out Report documents that the U.S. Environmental Protection Agency (EPA) completed construction activities at the Davis Park Road TCE Site (Site) in accordance with Close Out Procedures for National Priorities List Sites (OSWER Directive 9320.2-09A-P). EPA and the North Carolina Department of Environment and Natural Resources (State) conducted a pre-final inspection on September 13, 2000, and determined that the contractors have constructed the remedy in accordance with remedial design (RD) plans and specifications, and no further response is anticipated. EPA and the State have initiated the activities necessary to achieve performance standards and Site completion. II. SUJ\'I.MARY OF SITE CONDITIONS Background The Davis Park Road TCE Site includes approximately 20 acres of residential homes and private businesses in unincorporated Gaston County, southwest of the City of Gastonia. The Site consists of a contaminated soil area that was reportedly behind an automobile transmission shop located at 2307 Davis Park Road, and a plume of contaminated groundwater that emanates from this property and extends south along Davis Park Road to Blackwood Creek. The plume of contaminated groundwater underlies residences at the Site along the plume's entire horizontal extent. A majority of homes within the Site area obtain their water from private or community wells. Tetrachloroethene (PCE), Trichloroethene (TCE), 1, 1-Dichloroethene (l, 1,-DCE), Chloroform, and Methyl-ter-butyl ether (MTBE) are the groundwater contaminants of concern identified in the ROD. EPA proposed the Site to the National Priorities List (NPL) on July 28, 1998, and ~dded it to the final list on January 19, 1999. Remedial Construction Activities After the Remedial Investigation and Feasibility Study (RI/FS) were completed, on September 29, 1998, the Director, Waste Management Division, Region 4, signed the Record of Decision (ROD) for this Site. The major components of the selected remedy are: Reduction of exposure to contaminated groundwater by connection of homes, churches, and businesses in the Davis Park Road Site area to the City of Gastonia public water supply; • • 2 Optional wellhead treatment for affected private wells; Natural attenuation to restore the contaminated aquifer to the lower of either the Maximum Contaminant Levels (MCLs) or North Carolina Part 2L Drinking Water Requirements. The primary attenuation processes occurring at the Davis Park Road TCE Site are dispersion and intrinsic biodegradation; Continued analytical monitoring for contaminants in groundwater; and • Collection of additional information during the first year of the Remedial Design effort in order to support the predicted dispersion and intrinsic biodegradation rates for the contaminated groundwater. The ROD also contained a contingency remedy which would be implemented if the data collected during the natural attenuation study did not substantiate that natural attenuation would achieve remedial goals. The contingency remedy specified groundwater pumping, using a minimum of three extraction wells, with treatment of contaminated groundwater using activated carbon. The RI/FS concluded that soil contamination at the probable source area for the groundwater plume was no longer at levels warranting further action. It was also concluded that migration of the groundwater plume toward Blackwood Creek would not result in a measurable release of Site-related contaminants to the creek. Remedial goals for groundwater were selected as the most conservative of the chemical-. specific ARARs or the health-based risk goals and are: CONTAMINANTS OF MAXIMUM VALVES REMEDIAL GOALS CONCERN MEASURED (ug/1) (ug/1) Tetrachloroethene (PCE) . 14 1 ! Trichloroethene (TCE) 34 2.8 I, 1-Dichloroethene 3.8 7 (1,1,-DCE) Chloroform 40 1 Methyl-ter-butyl ether 709 200 (MTBE.) • • 3 - On July 23, 1999, EPA processed a work assignment under one of our available Remedial Action Contracts (RAC) for the RD. As part of the RD a final list of homes to be connected to the public water supply system or to receive carbon filters was determined. The remedial design of the water lines and carbon filters was determined to be substantially complete in December 1999. After obtaining funding, on February 16, 2000, EPA processed a work assignment under the same Remedial Action Contract to begin the Remedial Action (RA). Actual on-site construction of the water lines began on May I 5, 2000. RA construction included approximately 5625 linear feet of 12-inch, 8-inch and 6-inch ductile iron pipe, plus related service lines and appurtenances. Roads, rights-of-way, and private properties were returned to undisturbed conditions. A total of sixty three (63) residences were connected to the City of Gastonia water system and are now receiving water from that system. EPA installed carbon filters at five (5) residences where the homeowners would not agree to be connected to the public water supply system. Two homeowners with private wells in the Site area elected not to be connected to the public water supply system or receive a filter system ( one of whom had initially agreed to receive public water). Water service is available to these two homes via the EPA constructed water lines should the homeowners change their minds in the future, however the physical connection would be.their responsibility. Other changes from the RD included the addition of one home not previously identified as impacted by the Site, the deletion of one home already connected to City water, and the deletion of two homes connected to a community well not impacted by the Site. EPA also physically abandoned 19 private wells by plugging with a cement grout. EPA physically abandoned only those wells where the homeowners agreed to have them plugged. With the conditional concurrence oflocal Public Health Department, other wells were disconnected from the homes but left operational for watering gardens, etc. A sampling effort for the natural attenuation study was conducted in November 1999. A thorough review of the data, review of all historical data, and predictive analyses were conducted and summarized in an EPA Region 4 Memorandum Report dated September 25, 2000. The report focuses on TCE and PCE as the critical contaminants of concern. TCE concentrations are projected to diminish to less than the 5 ug/1 Safe Drinking Water Act Maximum Contaminant Level (MCL) in 12 years for the worst (slowest) estimate. Data from most wells suggest that TCE concentrations in most wells will be less that the MCL in about 5 years. Remedial goals for this Site are based on North Carolina's groundwater standard for TCE, which at 2.8 ug/1 is lower than the MCL. A worst case estimate is that it will take 26 years to achieve concentrations below that level in all parts of the plume. However, since the average groundwater travel time to Blackwood Creek is estimated at 13 years, this estimate is probably overly conservative. • • 4 PCE concentrations are expected to diminish to less than the MCL (5 ug/1) in 15 years assuming extreme worst case conditions. The remedial goal for PCE for this Site, 1.0 ug/1; is based on North Carolina's groundwater standard and the minimum detection level. A worst case estimate is that it will take 43 years to achieve concentrations below that level in all parts of the plume. Since the estimated contaminant migration rate from the area of highest PCE contamination to Blackwood Creek is approximately 7 -IO years, this indicates that our worst case estimates for PCE may also be overly conservative. The estimated time frames for natural attenuation are longer than, but basically consistent with the ROD assumption and eliminates the need for the contingency remedy. EPA currently plans to monitor groundwater from identified private wells and monitoring wells quarterly for the next two to three years, for wells with limited historical data, and then annually thereafter for all wells, until remedial goals are demonstrated to be achieved. Monitoring frequency will be reevaluated as needed. The City of Gastonia has agreed in writing to assume responsibility for operation and maintenance of the water lines, up to the water meter, after EPA completes the remed.ial action construction. The homeowners will become responsible for maintenance of their service lines and pressure reducing valves. EPA has agreed to maintain the five filter systems for a minimum of one year from installation, including periodic testing of the pre-and post-filter water quality during the first year. EPA will evaluate the efficiency of the filters to remove S,ite-related contaminants and replace filter media as needed. EPA may conduct some additional testing at these wells as a part of the long term sampling of the groundwater plume. The homeowners have agreed to assume responsibility for continued maintenance of the filters after the first year. Remaining activities to be completed by the EPA contractor include periodic adjustments and/or modifications to the carbon filters, including changing of filter media and testing to maintain optimum performance during the first year after installation. Also, as outlined above, implementation of the long term groundwater monitoring plan will also take place. EPA and the State have not yet concurred on the operational and functional (O&F) period, however, the City of Gastonia has agreed in writing to assume operation and maintenance responsibility for the water lines at that time. The homeown~rs have agreed to assume primary re;ponsibility for operation and maintenance of the water service lines and of the five carbon filters. No activities using removal authority were conducted at this Site. • • 5 ID. DEMONSTRATION OF CLEANUP ACTIVITY QUALITY ASSURANCE AND QUALITY CONTROL EPA and the State reviewed the remedial action contract and construction for compliance with quality assurance and quality control (QNQC) protocols. Construction activities at the Site were determined to be consistent with the ROD, RD plans and specifications, and the RD and RA statements of work issued to the RAC contractor. Plans and specification for the water line construction were also made consistent with City of Gastonia water system requirements and State requirements for erosion control. All confirmatory inspections, testing, and evaluations of materials and workmanship were performed in accordance with the construction drawings and technical specifications. Construction quality assurance was performed by the RAC contractor, which maintained a constant on-site presence during the water line construction. The City of Gastonia construction inspector maintained a part-time on-site presence and oversaw the water line testing required for acceptance by the City. The EPA project manager visited the Site during construction activities to review construction progress and adherence to the QNQC protocols, safety requirements, drawings, and specifications. Changes were properly documented and will be reflected in the as- built plans. The Quality Assurance Project Plan (QAPP) incorporated all EPA and State QNQC procedures and protocol. EPA procedures and analytical methods were used for all samples collected during RD and RA activities.· EPA and the State determined that analytical results are accurate to the degree needed. Sampling for the November 1999 natural attenuation study was conducted as specified in the USEP A, Region 4, Science and Ecosystem Support Division, Environmental Investigations Standard Operating Procedures and Quality Assurance Manual, May I, I 996. All analyses were conducted as specified in the USEPA, Region 4, Science and Ecosystem Support Division, Analytical Support Branch Operations and Quality Control Manual, December 1997. • • 6 IV. ACTIVITTES AND SCHEDULE FOR SITE COMPLETION The following activities remain for the Davis Park Road TCE Site: Task Estimated Completion Responsible Organization 1) Complete Final Inspection I 1/15/2000 EPA/State 2) Finalize Groundwater 12/15/2000 EPA/State Monitoring Plan and Initiate Work Assignment 4) Approve Interim RA Report 12/15/2001 EPA/State 4) Determine Remedy O&F 09/15/200 I EPA/State and Officially Transfer Responsibility to the City and homeowners 5) Five-Year Review 09/15/2005 EPA/State 5) Achieve Clean-up Levels/ 06/30/2043 EPA /State Approve Final RA report 6) Approve final Close Out 09/15/2043 EPA/State Report 7) Deletion from NPL 03/31/2044 EPA /State V. SUMMARY OF REMEDIATION COSTS The original cost estimate to implement the remedial action described in the ROD was $3,873,299 (net present worth). Costs were estimated for an anticipated 30-year time period (assuming groundwater monitoring may need to continue that long) and a discount rate of3.5 % was used in the ROD estimate. More detailed cost estimate documentation can be found in the Feasibility Study for the Site. The estimated final RA cost for the water lines. carbon filters and well abandonment is $725,000. This does not include the long-term groundwater monitoring, for which EPA has yet to contract. It is estimated that the final total present worth costs for the RA will be significantly less than the ROD estimate. • 7 VI. FIVE-YEAR REVIEW Upon completion of this remedy no hazardous substances will remain at the Site above levels that allow unlimited use and unrestricted exposure after the completion of the remedial action. However, it is expected that it will take greater than five years to achieve the groundwater clean-up goals. As provided in the current guidance on Five Year Reviews: OSWER Directive 9355. 7-02, Structure and Components of Five-Year Reviews, May 23, 1991, OSWER Directive 9355.702A, Supplemental Five-Year Review Guidance, July 26, 1994, and the Second Supplemental Five-Year Review Guidance, December 21, 1995, EPA will conduct a five-year review for this Site. The Five-Year Review Report will be completed prior to September 27, 2005 (five years after completion ofthis Preliminary Close Out Report). Richard D. Green, Director Waste Management Division Date • • UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION 4 61 Forsyth Street Atlanta, Georgia 30303-3104 September 22, 2000 4WD-OTS MEMORANDUM SUBJECT: MNA Evaluation & Recommendations for the Davis Park Road TCE Site, Gastonia, Gaston County, North Carolina ___ _ FROM: David N. Jenki~s, Environmental Scientis\,,.,-3/n~·.. R~C:FIVEO Office of Technical Services, Waste Managemen vIsIon · - CC: Elmer Akin, Chief . SEP 200 Office of Technical Services, Waste Management Division 2 5 0 TO: Phil Vorsatz, Remedial Project Manager SUPERFUND SECTION Phil, I have reviewed the results from the latest sampling effort at the Davis Park R9ad site as you requested. My review focused only on issues related to site characterization and the hydrogeology of the site and does not address risk assessment issues. These comments are intended to: 1.) summarize the history of groundwater contamination at the site and areas down gradient from the site within the framework of a groundwater concept model; . 2.) evaluate the progress of natural attenuation which effected the groundwater plume during the 1990s; 3.) provide the background data necessary to justify the remedial measures selected for implementation at the site; 4.) project clean-up times by natural attenuation; 5.) recommend wells to be sampled during a groundwater monitoring program. GENERAL COMMENTS Sample results for which the laboratory analysis were "Non-Detect", are plotted at 1 microgram/liter (µg/L) on the graphs which accompany this memo to show that something happened on that date. This evaluation was performed using results from the November, 1999 sampling event, plus data from earlier events dating back to 1990, to evaluate contaminant trends versus time . .Data from the most recent sample event was down- loaded from the EPA Region 4 R4LIMS. Data from all other, older events were translated from a spreadsheet provided by the consultant, or typed from reports in tables. The original laboratory reports have not been examined. The concentrations for PCE and TCE found in groundwater since 1990 were used in this evaluation. Observations regarding the distribution of these chlorinated solvents are supported by dissolved oxygen data collected on November 15, 1999 (USEPA, 2000, Table 7). Other natural attenuation data collected on November 15, 1999 is available. These data may be useful in evaluating natural attenuation processes, but only after more observations have been collected. Page 1 September 22, 2000 (1:18PM) / F:IPROJECTSIDAVISPARIRPMMAIL\recomend5.wpd • • The discussion of groundwater contamination is organized around two groups of wells. Wells 49, 121 and 131 are located in the•vicinity of the suspected source area. These wells are up gradient from the second group of wells, which includes wells 232, 239 (CW5), 285 (PW1 ), plus the MW2. well pair and MW5S. The evaluation of historic trends in groundwater quality presented in this memo is one of three lines of evidence recommended in the EPA Guidelines for evaluating Monitored Natural Attenuation (MNA). A groundwater monitoring program should be established to confirm that contaminant degradation continues as predicted in this memo. The locations of all wells described in this report are shown in the Remedial Investigation (RI) report by EPA's contractor, Weston Inc., dated July, 1998 Figure 3-1 and Figure 5-6. However, neither of these figures shows all of the wells, and some wells are called by different names on the two figures in the same report. The most common names are used in this memo where possible. Clean-up time estimates presented in this memo are based on the Federally.mandated Maximum Contaminant Levels (MCL) for drinking water because water of this quality could be considered suitable for delivery to residents on community water supplies. The MCL for both of the contaminants of concern at this site, trichloroethene (TCE) and tetrachlorethene (PCE), is 5 µg/L. The remedial groundwater clean-up goals prescribed in the Record of Decision (ROD) for this site are goals of 2.8 µg/L for TCE and 1 µg/L for PCE. These concentrations are similar to the detection limits commonly used for analyses of these contaminants. Times at which groundwater contaminant concentrations are estimated to reach these more pristine conditions, based on conservative assumptions, are 2 to 3 times longer than the times estimated in this memo to be required to achieve the MCL. GROUNDWATER CONCEPT MODEL The site is located on. a ridge on or near a groundwater flow divide between Blackwood and Crowders Creeks. The creeks flow southward on both sides of the ridge, and groundwater level contour maps indicate that groundwater flows from the source area in all directions except north (RI Figures 4-7 to 4-10). Numerous domestic water supply wells are located in the area surrounding the suspected source, and scime wells south and south-southeast of the site are known to have been contaminated. Contamination appears to be flushing through the aquifer. Groundwater samples from wells near the source area have not been contaminated in recent sample events, while concentrations in wells located south of the source area, closer to the natural discharge area, have increased. The data available suggests that the source has been depleted or removed from the unsaturated zone, and that residual groundwater contamination is migrating toward natural and man-made discharge areas. Page 2 September 22, 2000 (1:18PM) F:IPROJECTS\DAVISPARIRPMMAIL\recomend5.wpd • • Groundwater flows through an upper saprolite layer, which consists of silty sand and clayey sand with varying percentages of gravel. The saprolite is 10-80 feet thick and is underlain by partially weathered and unweathered granite. The granite is fractured, and fracture traces typically are oriented NE/SW. The fracture trend is similar to the orientation of the ridge and the creeks. The depth to water is near zero in topographically low areas near the creeks, and as much as 42 feet beneath topographic highs. The average groundwater velocity is estimated to be 197 ft/year (Feasibility Study (FS), p.7-16), based on the observed hydraulic gradients and hydraulic conductivities determined from slug tests and a pumping test. The total organic carbon content of both the saprolite and granite are very low (FS, p. 7-17), therefore, the retardation factor for the contaminant of concern, TCE, is estimated to be very low. Contamination is expected to move at rates similar to uncontaminated groundwater. The estimated con tam in ant velocity is 188 ft/year (FS, p.7-17). The typical flow-path length from the source area to the discharge areas, where groundwater enters surface water, is approximately 2,500 feet (RI Figure 4-7 to 4-10). Based on length of the typical flow path and the estimated annual contaminant velocity, the average contaminant travel time to the creeks is approximately 13 years. If contamination is assumed to have originated in the mid-1980s (FS, p.7-18), and if the contaminant velocity estimates are correct, much of the contaminant has already completed travel along the flow path to Blackwood Creek. This may explain the absence of contamination in the most recent source area groundwater samples, and the absence of degradation products, such as vinyl chloride, in the groundwater samples anywhere in the flow system. The absence of daughter products may also be due, in part, to the geology and topography of the site, which are likely to help maintain relatively high dissolved oxygen levels observed in November, 1999 (USEPA, 2000, Table 7). The combination of oxygen rich water from precipitation, which moves vertically downward in recharge areas beneath ridges, and the relatively rapid groundwater movement through this aquifer create conditions unfavorable for the build-up of TCE daughter products. In particular, vinyl chloride, the TCE daughter product with the lowest MCL, is easily oxidized and typically is not found in aerobic environments. 1 SUMMARY OF OBSERVATIONS AND RECOMMENDATIONS 1. TCE contamination in groundwater, which was observed in the suspected source area during the early 1990s, has diminished. In November, 1999, TCE was either not detected or was less than the MCL in two of the three wells (wells 49 and 121) which were contaminated when the site was first discovered. The third well, Well 131 was not sampled in November, 1999. 2. Although TCE concentrations in the source area wells vary, and some future samples may still show concentrations of TCE, the suspected source for TCE appears to be depleted. Page 3 September 22, 2000 (1:18PM) F:IPROJECTS\DAVISPAR\RPMMAIL\recomend5.wpd • • 3. TCE has migrated down gradient from the source area. Wells which were not contaminated with TCE in the early 1990s (wells 181 and 285) are now contaminated with TCE. The concentration trends appear to have peaked and may be beginning a gradual decline as natural attenuation reduces contaminant concentrations. 4. TCE concentrations in monitoring wells installed near the natural groundwater discharge area (MW2S and MW2D) may not have peaked yet. These wells are farthest down gradient from the source and closest to the natural groundwater discharge area. These wells would be expected to be the last wells effected by contaminated groundwater as it is flushed along the natural pathway from recharge area to discharge area. The peak concentrations which will be observed in these wells will be less than has been observed in wells 181 and 285 (PW1 ), due to natural attenuation with travel time and distance from the source. 5. PCE was found in soils in the source area, has never been found in groundwater in the suspected source area (wells 49, 121 and 131) since the site was discovered in 1990. If PCE was ever present in groundwater in this area, it had degraded or migrated away before the first groundwater samples were collected. PCE is present in groundwater down gradient from the suspected source area. 6. PCE concentrations in groundwater from well 239 (CW5) exceeded the MCL for PCE in 1990 and remained above the MCL in January, 1998. PCE concentrations are not diminishing at rates which can be simulated by a first-order decay coefficient, as is often observed when contamination is being reduced by natural attenuation. Instead, PCE concentrations are declining at a much ·slower rate. The slow rate of decline in PCE concentrations at well 239 suggests that the source for PCE may not be depleted. Well 239 (CW5) was not sampled in November, 1999, so recent concentrations in this well are unknown. If PCE concentrations in well 239 (CW5) continue to decline at the rate observed between 1990 and 1997, the concentration· of PCE in well 239 should be near the MCL by the year 2015. 7. TCE concentrations in well 232 and MW5S suggest that contamination is migrating toward the south, down gradient to Blackwood Creek, and not directly south- southeast toward the MW2 well pair. The concentrations of TCE in these wells have been near the MCL and may be increasing. Contaminant concentrations may rise in these wells, particularly MW5S, but the concentrations are not expected to exceed those observed farther up gradient. 8. TCE contamination in groundwater appears to be diminishing at rates which can be approximated by a first-order decay coefficient. TCE concentrations are projected to diminish to less than the MCL (5 µg/L) in 12 years for the worst (slowest) estimate. Data from most wells suggests that TCE concentrations will be less than the MCL in about 5 years. 9. Wells which should be monitored in the future include 49, 121, 131, 172,181,230, 232, 239, 285, MW1 S, MW1 D, MW2S, MW2D, MW5S. EPA guidelines for evaluating Monitored Natural Attenuation should be followed. Page 4 September 22, 2000 (1:18PM) F:IPROJECTS\DAVISPAR\RPMMAIL\recomend5.wpd • • 10. EPA guidelines regarding MNA recommend quarterly monitoring until seasonal variations in long-term trends are established. However, wells at this site have been sampled intermittently for as long as 10 years and the long-term trends identified in this memo appear to be greater than potential seasonal variations. Wells which have been contaminated in the past but have been uncontaminated in recent samples should be sampled annually. Wells which are contamin_ated currently should be sampled quarterly for one year, and annually thereafter, except for wells where an increasing trend in contaminant concentrations is apparent. Wells with increasing contaminant concentrations, and wells where contaminant concentrations are expected to become contaminated should be sampled quarterly for at least one year, after which, the sample frequency should be re-evaluated based on observed contaminant trends, seasonal variations and estimated travel times to the next down gradient monitoring wells. Based on groundwater flow directions and contaminant distributions shown in RI Figures 5-3 and 5-4, TCE concentrations are expected to increase in the vicinity of well 172. Both TCE and PCE concentrations are expected to increase in wells southeast of. well 239. Smaller increases in TCE and PCE may be observed in wells south and south west of well 239. TCE and PCE concentrations increased in well 232 between 1996 and 1999. These increases will occur as known contamination moves through the groundwater flow system toward the natural discharge areas at Blackwood Creek. 11. Well depths have not been determined for many of the wells which have been sampled in the vicinity of the Davis Park Road site. The depth to water has not been measured routinely, so variations in groundwater flow directions are unknown .. Relationships between contaminated wells and suspected source areas can not be defined with the certainty often acquired at other sites. The following sections of this memo describe the data which supports the observations listed above, and presents plots of sample results versus time which demonstrate these observations. TCE TRENDS VERSUS TIME (Wells 49. 121 and 131. Figure 1 & 21 TCE and PCE have been the contaminants of concern (COCs) at this site. Figure 1 shows the TCE concentration in these wells 49, 121, 131 over time. These wells are located near the suspected source area, and were found to be contaminated in the earliest sample events. The TCE concentration in well 131, the most down gradient of the 3 wells, was greater than the MCL in 1990. The TCE concentration in well 131 rose to levels similar to those observed in well 49 and 121 between 1990 and January, 1993, suggesting that contaminant migration from the vicinity of the suspected source area \"✓as occurring. Figure 1 shows some irregularities in the samples collected in 1993 and 1994. TCE was not detected in every sample from wells 49, 121 and 131 during this period. These irregularities complicate the evaluation of Natural Attenuation and must be described before other trends are evaluated. It is important to note that when TCE was not detected · Page 5 September 22, 2000 (1 :35PM) F:IPROJECTS\DAVISPARIRPMMAIL\recomend5.wpd • • in one well it was not detected in any of these three wells. When TCE was detected i~ one well, it was detected in all three wells. When _detected, TCE was present a concentrations similar to the concentration detected In previous samples. The time between detect and non-detect samples is sometimes as little as 2 weeks. - The "W' pattern during 1993, shown on Figure 1, is result of this intermittent detection of TCE at wells 49, 121 and 131. Because these wells are located at different distances from the source, it seems unlikely that 3 wells in different parts of a natural flow system w?uld all be non-detect, all at the same time on so many days, yet return to previous concentrations all at the same time on other days. It seems more likely that some factor in the way the samples were collected or handled after collection resulted in a loss of volatile organic components from the samples. The results of the 1993/94 samples when TCE was not detected probably are not valid, but the cause has not been addressed in any of the investigations at the site. Figure 2 shows that when the "W is ignored, contaminant concentrations in wells 49, 121 and 131 have diminished since 1990, generally following a trend which can be· approximated by drawing a straight line between the highest sample and the most recent • sample for each well. By the 1998 and 1999 sample events, concentrations in these wells i had declined and were at or near the MCL. This downward trend toward the MCL suggests that the source has been depleted over time. Based on nearly 1 O years of observation, TCE concentrations are expected to continue to diminish, and eventually TCE concentrations in these \rvells 'Nill be consistently belovv' the l\1CL. The degradation trend is irregular as shown by the sharp rise in TCE concentrations in Fall of 1998 in wells 121 and 131 (Figure 2). After the sharp rise in TCE concentrations in the Fall of 1998, the TCE concentration in well 121 declined to concentrations below the M~L by November, 1999. Well 131 was not sampled in November, 1999, but the concentration probably declined below the MCL also. The variation in apparent degradation rates may be due to variations in rainfall, changes in the depth to water at the time of sampling or other factors which may cause resid~al contamination to be leached into the ground water system occasionally . .However, thEjlre may be other reasons. For example, note that in October, 1998, the TCE concehtration in well 131 rose from 1 µg/L to 16 µg/L in just 3 days. The two samples were analyzed py different laboratories, and presumably collected by different field teams using different procedures. The intermittent occurrence of MCL exceedances in these wells make prediction of clean up times difficult. However, despite the irreg~larities, the over all trend in TCE concentrations for 10 years of record is downward. Clean up time estimates in this memo are based on this observed trend. In all figures after Figure 1, the line between sample events is broken at the suspect samples from 1993/94. Page 6 September 22, 2000 (1:18PM) F:IPROJECTSIDAVISPARIRPMMAIL\recomend5.wpd • • TCE TRENDS VERSUS TIME (Wells 181, 239 and 285 IPW1I, Figure 3 & 41 Wells 181 and 285 (PW1) are located relatively far down gradient toward the natural groundwater discharge area. These wells were not contaminated in the earliest sample events (Figure 3). The maximum concentrations observed in these wells are similar to the concentrations shown on Figures 1 and 2 for the same time period (Figure 4). These observations indicate that the plume has moved down gradient from the source area toward the natural discharge area at Blackwood Creek. The TCE concentrations have been diminished by natural attenuation processes with time and distance from the source, so concentrations in the down gradient area are unlikely to ever be as high as those once observed in the source area. PCE TRENDS VERSUS TIME (Wells 49. 121 and 1311 PCE was detected in soil in the source area, but has never been detected groundwater samples from wells 49, 121, 131, located near the suspected source, but only in wells located farther down gradient. If PCE once was present in groundwater beneath the source area, it was removed by migration or natural attenuation prior to 1990. The absence of PCE in groundwater from the suspected source area during the 1990s seems inconsistent with the slow degradation of PCE in wells further down gradient. However, the EPA consultant has never reported that another source for PCE might be present. Regardless of the source for the PCE, it is commingled with the TCE, it is degrading, and it is migrating toward the natural discharge area. PCE concentrations down gradient from the source area are presented in Figure 5 and described later in this memo. PCE TRENDS VERSUS TIME (Wells 232, 239 (CW5), 285 (PW1). MW2 and MW5, Figure 51 PCE was detected in weU239 (CW5) in 1990. However, neither PCE nor TCE were detected in the June 1992 sample from well 239 (CW5). The line between the June 1992 sample from well 239 (CW5) and samples before and after this date is broken (Figure 5). The PCE concentration in well 239 (CW5) has been .1 0 to 20 µg/L in all other samples. The results from the June 1992 samples from well 239 (CW5) probably are not valid. PCE well 239 (CW5) has diminished only slightly since 1990 (Figure 5). No other:well at this site has ever shown PCE concentrations as high as those observed in well 239 (CW5). Well 239 (CW5) was not sampled in November, 1999, so recent concentrations in this well are not known. Trends in contaminant concentrations in this well are described later in this memo (Figures 10, 13 and 15). Well 285 (PW1) was not contaminated in 1990, but was contaminated in excess of the MCL for PCE by 1996 (Figure 5). The results from the November, 1999 sample in well 285 (PW1) showed PCE concentrations continue to be above the MCL for PCE. This well is relatively far down gradient from the suspected source area. These data suggest that PCE contamination has moved into the vicinity of well 285 (PW1) from the up gradient area near wel! 239 (C\AJ5). Page 7 September 22, 2000 (1:18PM) F:\PROJECTSIOAVISPARIRPMMAIL\recomend5.wpd • • PCE concentrations are rising in well 232. This well has been considered to be on the edge of the PCE plume in previous sample events (Weston RI, Figure 5-3). A slow, downward trend in PCE concentrations appears to be occurring in all other wells (Figure 5), but as shown later in this memo, the rate of decline is less than would be expected by natural attenuation through reductive dechlorination. This process, which includes the normal degradation of PCE to TCE, DCE, vinyl chloride and ultimately ethene, can usually be approximated by a first-order decay coefficient. PCE degradation in well 239 is proceeding much less rapidly than the slowest degradation rate given in published references (Howard and others, 1991 ). The source of the PCE may not be depleted. PCE concentrations may rise in the MW2 and MW5 wells. These wells are farthest down gradient and closest to the natural discharge area at Blackwood Creek. If a source for residual PCE is present, degradation rates may increase in the future once the source is depleted. TCE TRENDS VERSUS TIME (Wells 232. 239 (CW5l, 285 (PW1l. MW2 and MW5. Figure Sl Figure 6 shows the TCE concentrations in the same wells as shown in Figure 5. The TCE concentration in well 239 (CW5) has been 30 to 60 µg/L in all samples except for the sample in mid-1992. Overall, a downward trend is apparent in well 239 (CW5). Farther down gradient, concentrations peak at consecutively lower levels with travel time and distance from the source. A comparison between Figure 5 and 6 shows that the trends in TCE and PCE concentrations are generally the same for each \a.rel!. From Figure 5-6 in the Weston RI, well 239 (CW5) is the most up gradient well contaminated with PCE, well 285 (PW1) is down gradient, and the MW2 wells are most down gradient. Both of the MW2 wells are contaminated with TCE and PCE, but to date, concentrations have _been near the MCLs. The TCE and PCE concentrations may increase in the MW2 and MW5 wells during the next two years. This indicates migration of contamination from up gradient areas toward the natural discharge area, and is consistent with the observed diminishment of PCE and TCE concentrations with trav'el time and distance from the source area. TCE and PCE concentrations in MW2S and MW2D are not expected to exceed those observed in well 285 (PW1) between 1996 and 1999. CLEAN UP TIME ESTIMATES The natural attenuation of organic contamination in groundwater has been observed to diminish with time and distance from a source, often at a rate which can be approximated by a first-order decay coefficient. These coefficients are commonly expressed in terms of a half-life, measured in days. For each chemical (TCE and PCE), the shortest and longest half-life from the Handbook of Environmental Degradation Rates (Howard and others, 1991 ), plus two additional degradation rates chosen to best fit the observed data, are superimposed on the data presented in Figures 1-6. Page 8 September 22, 2000 ( 1: 18PM) F:\PROJECTS\DAVISPAR\RPMMAIL\recomend5.wpd • • Published half-lives for TCE in groundwater range between approximately 10 months and 4.5 years. Published half-lives for PCE range between 1 and 2 years. Clean up times are estimated by taking the data presented in Figures 1-6 of this memo, and superimposing 4 half-lives on the graphs. The different "Assumed Initial Concentrations" shown on each graph represent the concentrations assumed to be present in that portion of the plume on January 1, 1990. These concentrations are selected so that concentrations observed in the wells during the 1990s will be less than the concentration calculated from the Assumed Initial Concentration using the longest half-life. Figure 7 shows that the TCE contamination in well 49 degraded at rate equivalent to a half- '"e be'-.. nnn 5nn nnr1 650 dn"r Ill i.Vyc:;c:;11 VV C:UIU o.y-3. Figure 8 shows that the TCE contamination in well 121 has degraded at rate equivalent to a half-life of about 650 days, except for the Fall, 1998 sample. From Figure 8, a "worst case" for the time required for clean-up by natural attenuation is approximately 12 years (year 2012). This estimate is based solely on the relatively high concentration of TCE reported in this well from the sample of October 21, 1998. However, 13 months later, the November, 1999 sample was already below the MCL. Based on the November, 1999 sample and a degradation trend at an apparent half-life of 650 days, concentrations in this u,oll shru 1lrl he rnns;s•en+h, a• rlo+o,...t;nn l;m;•s a• ♦his +;me IW._,I VUI .... l,J ..,.._,II I l I ll1 l Y~L,._,,._, 1\,11 Ill IL I. LIii lll I • Figure 9 shows that the TCE contamination in well 131 has degraded at rate equivalent to a half-life between 300 and 500 days, except for the October 21, 1998 sample. Note that the TCE concentrations in both the June 25, 1998 and the October 19, 1998 samples from this well were 1 µg/L. This well was not sampled in November, 1999. From Figure 9, a "worst case" for the time required for clean-up by natural attenuation is approximately 5 years (year 2005). Figure 1 O suggests that the TCE contamination in well 239 has degraded at rate equivalent to the longest reported half-life. A TCE degradation rate, equivalent to a half-life of about 4.5 years is indicated from the data from well 239. This well is at the center TCE plume shown in the Weston RI Figure 5-4. If TCE contamination continues to degrade'at this rate, TCE concentrations in this well will be near the MCL for TCE during the year 2009. Guidelines for monitored natural attenuation should be implemented to confirm degradation trends predicted in this memo .. See the comments regarding PCE at this well described on Figure 13. Figure 11 shows that well 285 was not contaminated in 1990. The well was contaminated with TCE at concentrations greater than the MCL by 1995. A TCE degradation rate, equivalent to a half-life of about 4.5 years is indicated from the data from well 285. If TCE contamination continues to degrade at this rate, TCE concentrations in this well will be near the MCL for TCE during the year 2006. Figure 11 shows that at this well, the clean- , on •·1me es•;mn+n ir basnrl nn ♦he resu'ts f•om nn'" t'"'0 snmp'er Ho• .. nuer 'he t·1me . UtJ l llll CllC. 1..:, C:U VII lll I I Ill VI 1y "" Clll I ..:,. I ..-VC.1' 1 1 l I Page 9 September 22, 2000 (1 :18PM) F:IPROJECTSIDAVISPARIRPMMAIL\recomend5.wpd • • estimate is similar to those obtained at other wells, the contaminants and the levels of contamination are similar to those observed at other wells, and both the contaminant concentrations and trends are consistent with observations from other wells, given the location of this well in the groundwater flow system. As described in the comments regarding Figure 10, the degradation rate should be verified by a groundwater monitoring Program ,.,h;rh fnlln,us i::pA gu;de';nos ronard;nn ~•t.lA I I II 11111\.; l VIIVWI' L.. I Ill V V!::f I Ill~ 1w'it• . Figure 12 shows that well 181 was not contaminated in 1990. The well was contaminated with TCE at concentrations greater than the MCL by 1995. A TCE degradation rate, equivalent to a half-life of about 4.5 years is indicated from the data from well 181. If TCE contamination continues to degrade at this rate, TCE concentrations in this well will be near the MCL for TCE during the year 2006. As described in the comments regarding Figure 10, the degradation rate should be verified by a groundwater monitoring program which follows EPA guidelines regarding MNA. · Figure 13 shows the concentration of PCE in well 239 since 1990. Figure 13 shows that the PCE concentration in well 239 is not degrading at a rate which can be approximated by a first-order decay rate (the tri-angles don't fit any of the lines). The reported half-lives for PCE are between 1 and 2 years (365 to 731 days), but PCE concentrations in this well are not diminishing at these rates. Clean up times for PCE in this well can not be projected by this method (See Figure 15 instead). The failure of the PCE in this well to degrade at the expected rates may mean that a source for PCE may be present in the area. If so, degradation of PCE in groundwater will not proceed until the source is depleted. The fact that none of the PCE concentrations from the 1990 samples were near the Assumed Initial Concentration of 300 µg/L shown on Figure 13, also supports the suggestion that PCE is dissolving into groundwater at a constant rate from a small source. See the comments regarding Figure 15. Figure 14 shows the <eancentration of PCE in well 285 since 1990. Well 285 was not contaminated in 1990, but groundwater from the well exceeded the MCL by 1996. There are relatively few samples from this well, and the data on Figure 14 are insufficient to determine which degradation rate is applicable to this well. The PCE concentrations in well 285 may be following a trend similar to well 239. As described in the comments regarding Figure 10, the degradation rate should be verified by a groundwater monitoring program which follows EPA guidelines regarding MNA. PCE Summary (Figure 15) Figure 15 shows the PCE concentration data from wells down gradient from the Davis Park Road site (see Figure 5, 13 and 14). Based on the trend through the highest concentrations observed in well 239, the clean up time for well 239 is projected to be approximately 15 years (year 2015). If there is a residual source for PCE, once this source is depleted, degradation rates should approximate rates typically observed for PCE in groundwater, which are faster than have been observed in well 239 to date. The data for Page 10 September 22, 2000 (1:18PM) F:IPROJECTS\DAVISPARIRPMMAIL\recomend5.wpd • • • • well 239 plotted on Figure 15 suggest the source is becoming weaker with time. As described in the comments regarding Figure 10, the degradation rate should be verified by a groundwater monitoring program which follows EPA guidelines regarding MNA. · PCE concentrations in wells 232 and 285 (PW1) exceed the MCL, but were less than twice the MCL in November, 1999. Concentrations of PCE in these wells should continue to diminish at a rate similar to that projected for well 239. PCE was found in soils in the source area, but has never been observed in groundwater near the source area. If PCE was ever present near the source area, ii appears to have attenuated at rates which approximate half-lives observed at other sites and in laboratory experiments. The PCE which remains in the aquifer down gradient from the suspected source area is not diminishing at these rates. If the PCE in the down gradient area is from the same source as the TCE discovered in 1990, ii has migrated into an area in which conditions are less favorable for PCE degradation than the conditions near the source area. The maximum flow-path length in the area contaminated by PCE shown on Weston RI Figure 5-3 is 1,500 to 2,000 feet. This is approximately the distance from the line of MCL exceedance to Blackwood Creek. The contaminant travel time across this distance is approximately 7-10 years. Regardless of the source of the PCE observed near well 239, if the estimated contaminant migration rates are correct, much of the contamination in the vicinity of well 239 should discharge to Blackwood Creek by the year 2005. Remaining residual contamination should attenuate al rates similar to published half-lives, probably by the year 2017. Groundwater between Wf:lll 239 and Blackwood Creek will be contaminated during this period. REFERENCES Howard, P.H., R.S. Boethling, W.F. Jarvis, W,M, Meyhan, E.M. Michalenko, 1991, Handbook of Environmental Degradation Rates, Lewis Publishers USEPA, 2000, Letter from Dan Thoman to Jennifer Wendell, dated Feb. 2, 2000. Weston, 1998, Remedial Investigation Report, Davis Park Road TCE Site, Gastonia, Gaston County, North Carolina, Roy F. Weston, Inc. Suite 200 5405 Metric Place, Norcross, Georgia 30092 July, 1998 Weston, 1998, Feasibility Study Report, Davis Park Road TCE Site, Gastonia, Gaston County, North Carolina, Roy F. Weston, Inc. Suite 200 5405 Metric Place, Norcross, Georgia 30092 June, 1998 Page 11 September 22, 2000 (1:18PM) F:IPROJECTS\DAVISPAR\RPMMAIL\recomend5.wpd Mr. Phil Vorsatz U.S. EPA Region IV 11 th Floor, North, WMD 61 Forsyth Street SW Atlanta, Georgia 30303 • Roy F. Weston, Inc. Suite 200 5405 Metric Place Norcross, Georgia 30092-2550 ® 7i0-263-5400 • Fax 770-263-5450 www.rfweston.com RECFIVED AUG 2 82000 SUPERFUND SECTION RE: Errata/Revised Pages for Final Remedial Design Davis Park Road TCE Site Gastonia, Gaston County, North Carolina U.S. EPA Contract No. 68-W7-0026 Work Assignment No. 043-RDRD-04PN Document Control Number RFW043-3A-AGDS Dear Phil, • August 14, 2000 Roy F. Weston, Inc. (WESTON) is submitting to you four (4) copies of revised pages for the Final Remedial Design (dated February 2000) for the Davis Park Road TCE Site. In addition, WESTON is submitting one (I) copy of the approved final drawings for the Sediment and Erosion Control Plan, as originally presented with the Final Remedial Design drawings. WESTON has produced the revised pages for final closure of the Remedial Design. Specifically, these pages represent the revision of any outstanding errors in the document prior to the start of the Remedial Action. However, none of the errors were carried forward into the design used for the Remedial Action. If you have any additional questions or require clarification, please do not hesitate to contact me at (770) 263-5443 or email at: nelsond@mail.rfweston.com . Thank you very much for your time and consideration. Sincerely, Roy F. WESTON, Inc. ;?~])~ David Nelson, P.G. WESTON Site Manager • • 4.1.14 Transfer of Ownership of \Vaterlines to the City FinaJ Remedial Design Section: 4 Dale: Fcbmary 2000 Prior to connection to "existing" City of Gastonia water lines, an appropriate agreement/memorandum of understanding will be completed between EPA and the City of Gastonia. When the construction phase is completed and all items are corrected on the "punch list", EPA will be notified that the construction has been finalized. At this point, EPA will be responsible for the negotiation of transfer of ownership of water lines to the City. The selected subcontractor responsible for installation of the carbon filtration units will also be responsible for maintenance of the system. WESTON will be responsible for replacement of the filters and sampling of the treated water for a one year period beyond date of installation. 4.1.15 Permitting During the design process and during the advertising of bids, WESTON will complete all permits required by the North Carolina Department of Transportation for excavation and construction along state maintained roads. WESTON will also examine requirements by the North Carolina Department of Environment and Natural Resources as well as other pertinent requirements by state and local agencies. 4.2 IMPLEMENTATION SCHEDULE This Section presents a revised Preliminary Design schedule of the activities described in Section 4.1. The schedule is provided as Figure 4-1. NOFVK:\WP\20064\043\FRDDDNOOl .DOC 4-5 Thi.-. document was prepared by Roy F. Weston, Inc., cxprcs.,;Jy for U.S. EPA. It shall not be rcll'ascd or dl-.closcd in whole or in part without the express, written permission of U.S. EPA. • SECTION 5 BASIS OF DESIGN • Final Remedial Design Section: 5 Date: February 2000 The design criteria for the proposed water distribution improvements and carbon filtration units are presented below. These design criteria conform to City of Gastonia Standard Details and Specifications dated June 1, 1997, and general guidelines presented in Section 8 through 8. 10 of Recommended Standards for Water Works, GLUMRB, 1992. Subsequent to receipt of the preliminary survey and comments on the Preliminary Design document, the design criteria have been revised accordingly. The goal of the design is to provide the homeowners a supply of drinking water that results in minimum risk to their health. Figure 5-1 illustrates the locations of the proposed water main and distribution lines. Figure 5-2 illustrates a typical 10 gpm carbon filtration unit installation which could serve a single household. Standard waterline design details and manufacturer's cut sheets (revised since submittal of the Preliminary Design document) are referenced in Section 7 -Preliminary Design Documents and presented as exhibits in the Appendices. Municipal Water From City of Gastonia Line Sizes: Line Type: Service Line: NOR/K:\WP\20064\043\FRDDDNOO 1. DOC 12-inch water main -850 linear ft 8-inch distribution lines -1,575 linear ft. 6-inch distribution lines -3,200 linear ft. 2-inch service lines -1,000 linear ft. Ductile Iron, Class 50 (for 6, 8, and 12 inch line) PVC AWWA C900 (for 2-inch line) ¾-inch copper, with a corporation stop 5-1 This document was prepared by Roy f<'. Weston, Inc., expressly for U.S. EPA. It shall not be released or disclosed in whole or in part without the express, writlcn permission of U.S. EPA. ITEM Trench Excavation -Pipelines Trenching -Service Lines Trench Backfill Bedding Blow-offs (3) Isolation Valves (20) Hydrants ( I 0) Service Lines¾" Copper Corporation stops Push-on D.I.P. 12-inch -850' Push-on D.I.P. 8-inch -1575' Push-on D.1.P. 6-inch • 2000' 2" PVC AWWA C900-1200' 1-1/2" Service Line -550' Meter Boxes Erosion Control Testing & Clean-up Pavement Repair Seeding Subtotal Mobilization I 0% Contingency 7.5% Total Construction Cost Estimate • • Table 6-2 Construction Cost Estimate -Water Line Year 2000 Dollars COST($) Final Remedial Design Section: 6 Date: February 2000 COST($) (for 6-inch and 2-inch lines) (for no 2-ineh line usage) 15,265 15,265 4,627 4,627 4,977 4,977 2,183 2,183 6,120 6,120 9,150 10,500 20,000 20,000 36,806 36,806 2,365 2,365 29,750 29,750 36,225 36,225 42,000 67,200 19,200 NIA 3,300 3,300 21,304 21,304 5,000 5,000 4,642 4,642 7,500 7,500 4,050 4,050 $229,244 $255,794 22,924 25,579 17,193 19,185 $269,361 $300,558 $269,361 $300,558 *2000 Costs estimated by: (1997 dollars)x( 1.19)= Year 2000 dollars [ 1.19=( I)( 1.06)(1.06)(1.06] NOFVK:\WP'20064\043\FRDDDN001.D0C 6-2 This document was prepared by Roy F. Weston, Inc., expressly for U.S. EPA. It shaU not he released or di'>closcd in whole or in part without the express, written permission oru.s. EPA. • • Final Remedial Design Section: Appendix D Date: Fcbmary 2000 Example Utility Easement Agreement STATE OF NORTH CAROLINA DEED FOR WATER MAIN AND GENERAL UTILITY EASEMENT COUNTY OF GASTON KNOW ALL MEN BY THESE PRESENTS, that----------~---- of Gaston County, North Carolina; hereinafter referred to as Grantors, for the sum of One Dollar ($1.00) and other good and valuable consideration, the receipt of which is hereby acknowledged, in hand paid by the U.S. Environmental Protection Agency, a federal agency of the Government of the United States of America, hereinafter referred to as Grantee, do hereby convey and grant unto Grantee, its successors and assigns, a perpetual right, privilege and casement, the boundaries of which arc specifically described hereinafter by plat reference, to go in, upon and through that certain tract of land and premises described 111 those certain deeds to ________________ , dated _____ , __ , and recorded ___ _ __ , and recorded in the Office of the Register of Deeds of Gaston County, North Carolina, in Deed Book ___ al Page_, to which reference is made, to construct, maintain, and operate in, upon and through said premises in a proper manner, water lines and utility systems as the Grantee may hereinafter desire to locate within said right-of-way and easement, including but not limited to water mains, storm drains, sewer mains and outfall lines, power lines, gas mains and telephone lines, together with supporting slope and construction easements, over, in, or on that portion of the realty of the Grantors and which is more particularly described as follows: Being a perpetual right-of-way and casement in the widths shown on the plat referred to below. The location of the right-of-way and easements acquired and the width thereof is shown on that certain plat or map thereof in the Office of the City Engineer for the City of Gastonia, File# ___ dated______ , __ , and entitled "Proposed Permanent Water Main/General Utility Easement and Temporary Construction Easement lo be Acquired from ___________ ," a copy of which said map is on file in the Office of the Register of Deeds for Gaston County in Plat Book_ at Page_, to which reference is hereby made for greater certainty of description. It is agreed that once construction is completed and the waterline and all appurtenances arc accepted by the City of Gastonia that the U.S. Environmental Protection Agency will transfer ownership of this easement to the City of Gastonia, a North Carolina Corporation, for the long-term maintenance and operation of the water lines constructed within this easement. It is agreed that the cost of constructing, installing, and maintaining any utilities on the aforedescribed right-of-way and easement shall be borne entirely by the Grantee and that no assessment is to be levied against the remaining property of the Grantors by the Grantee by reason or such right-of-way and e,L,ement. The Grantee, its successors and assigns, shall have the perpetual right-of-way and easement at all times to enter said easement premises <LS described hereinabove for the purpose of inspecting said lines and systems and making necessary repairs and alterations thereon NQR/K:\WP\20064\043\F ADDDN001. DOC • NEW B"DISTRIBUTION LINE NORTH Ci • 0 0 LEGEND NEW 6" DISTRIBUTION LINES CREEK CENTERLINE. EXISTING ROADS. EXISTING STRUCTURES. NEW 2" DISTRIBUTION LINES ---- -···-· EXISTING HOMES TO RECEIVE REMEDIAL OPTIONS. CURRENT 12" MAIN. NEW 12" MAIN. NEW 8" DISTRIBUTION LINES. NEW 6" DISTRIBUTION LINES. NEW 2" DISTRIBUTION LINES. [) BARNO D <I::-+ Q__"'<. >--z z c.CJ ~ D 0 D I) oo 0 \~ ~ 'f n D ~ () 0 ~ ~ LJ ~ 1'- \) 0 TAYLOR MEMORIAL/ BAPTIST CHURCH I CURRENT END OF 12" MAIN NEW 12" MAIN ' ~ ~ / I I I \ I I I I I NEW 8" DISTRIBUTION LINE ~ END OF 12" MAIN I I ~ \l-0 ~OD CREEi< <l'. wz I-_J -0 (/) O'.'. 0 <l'. <l'. u OJ: O'.'. I- ~ O'.'. O'.'. 0 <l'. z 0... • <l'. (/) -_z >O <l'. I- Q(/) <l'. (.'.) D (/) w z o_J Zz <l'. 0 zl--:::) <l'. (I) ~-O'.'. I- (/) 0 ~ I "' w Cl:'. ::::, (.!) G: z O• vi 5 w Cl:'. §;' Cl:'. 0. <( 0 <( 0 > w Cl:'. NORTH LEGEND • NEW B"DISTRIBUTION LINE Cl D 0 NEW 6" DISTRIBUTION LINES CREEK CENTERLINE. EXISTING ROADS. EXISTING STRUCTURES. NEW 2" DISTRIBUTION LINES EXISTING HOMES TO RECEIVE REMEDIAL OPTIONS. CURRENT 12" MAIN. NEW 12" MAIN. NEW 8" DISTRIBUTION LINES. NEW 6" DISTRIBUTION LINES. NEW 2" DISTRIBUTION LINES. D 0 0 D (} o □ 0 I 0 0 D \~ ~ BARN 0 I I NEW 8" DISTRIBUTION LINE I I I I I I END OF 12" MAIN I I % \__l0 L] D TAYLOR MEMORIAL) BAPTIST CHURCH / CURRENT END OF I 12" MAIN NEW 12" MAIN ' D <( wz f-___J -0 (/) D::'. o<C <Cu O:r: D::'. f- :::,:: D::'. D::'. 0 <Cz Q_ • <( (/)-_z >O <( f- Q(/) <( (.'.) (I) w z 0 ___J Zz <Co zf--::::) <Cm ::;;;;-D::'. f- (I) 0 ~ I IO w a:: ::::, r., G: a lii 5 w a:: §! a:: a. < • Mr. Phil Vorsatz Remedial Project Manager U.S. EPA Region IV 61 Forsyth Street, SW Atlanta, GA 30303 Roy f. Weston, Inc. Suite 200 5405 Metric Place Norcross, Georgia 30092-2550 ® 770-263-5400 • Fax 770-263-5450 www.rfweston.com RE: Inspection Report For Waterline Installation Project Davis Park Road Site Remedial Action Gastonia, Gaston County, North Carolina U.S. Contract No. 68-W7-0026 Work Assignment No. 048-RARA-04PN Document Control No. RFW048-IC-AFUT Dear Phil: • RECEIVEr JUL 032000 SUPERFUNO SE June 28, 2000 This Inspection Report for the Davis Park Road Site Remedial Action in Gastonia, North Carolina presents information collected during. oversight of the water line installation along Davis Park Road and adjacent side streets, including Penny Park and Skyland Drives, Springbrook Circle, and Puritan, Rotan, and Tate Streets. The water line installation was preceded by a pre-construction meeting held at the City Hall of Gastonia, North Carolina. Actual work on the project began on May 22, 2000 with mobilization of equipment to the site. The following information is presented in chronological order: Week of May 22, 2000 During this first week of field acllvlly, Trans-State Construction Company, Inc. (TSCC) mobilized equipment to the site, conducted a utilities search, initiated excavation of pipe trenches, and installed piping. From May 22 to May 24, 2000, equipment was mobilized to the site including piping, fittings, valves, and other support material and was placed at the edge of the Douglas Bell property adjacent to James May's property. This is the laydown area for the entirety of the waterline installation phase. The materials were inspected by TSCC personnel and WESTON's on site inspector for compliance with the standards and specifications. On May 22, k:\200641048\lnspRpt.doc • • 2000, the City of Gastonia Inspector was on site to determine the actual start date of construction and to arrange for daily reviews of site activities. Excavation for the waterline was begun, as scheduled, on May 25, 2000 with the removal of the blow off valve at the end of the existing 12 inch water main along Davis Park Road. During this day, the contractor installed approximately 300 linear feet of 12-inch ductile iron pipe. The excavation along Davis Park Road continued on May 26, 2000 and was advanced another 200 feet. This portion of the pipe crossed under a gas line and, according to project specifications, was wrapped in 8 millimeter thick polyethylene sheeting. At the end of the day, as with all successive days, each excavation was backfilled to original grade. Week of May 29, 2000 Excavation and installation of the waterline continued this week with TSCC utilizing two work crews. Activity along Davis Park Road was continued and completed to the designed termination point at the bridge over Blackwood Creek on Monday, May 29, 2000. After completion of this portion of the pipeline, TSCC began installation of pipe along Skyland and Penny Park Drive. By the end of the work day Tuesday, May 30, 2000, 250 linear feet of pipe and one fire hydrant tap were installed along Penny Park Drive, a 6-inch tap had been placed at the intersection of Tate Street and Davis Park Road as well as Skyland Drive and Davis Park Road, and 100 linear feet of pipe was installed along Skyland Drive. On Wednesday, May 31, 2000, TSCC crews accidentally cut a gas line along Penny Park Drive that had not been demarcated by the local utilities locating service and actually was part of an out-of-service line. After the gas line was severed, the local gas company was contacted for immediate services. The line was shut off and removed from the main service lines without incident. By Friday , June 2, 2000, the water lines along Skyland and Penny Park Drive were complete and connections were made at Puritan Street and Springbrook Circle. During this week, approximately 900 feet of 8-inch pipe had been placed in the ground. Also, approval was provided by the City of Gastonia for the thrust blocking and rodding methods used for fire hydrant and line connection installation. Week of June 5, 2000 The week began with a rain event on Monday, June 5, 2000. The only activities to occur during this day were driveway pavement cuts along Puritan and Rotan Streets. Full pipeline installation activities resumed on Tuesday, June 6, 2000, as 375 linear feet of 6-inch ductile iron pipe were installed along Puritan Street with two fire hydrants. For the remainder of the week, TSCC completed the line along Puritan Street with installation of an additional 280 feet of 6-inch pipe k:120064\048\lnspRpt.doc 2 • • as well as installing 25 feet of pipe along Tate Street. On Friday, June 9, 2000, all areas that had been disturbed were seeded and covered with straw to return the area to original or equal conditions. Week of June 12, 2000 TSCC continued the installation of pipe along Tate Street and completed the installation for a total of 450 feet. Following the Tate Street completion, the contractor mobilized all effort towards Springbrook Circle. By Friday, June 16, 2000, the entire 1,410 feet of 6-inch ductile iron pipe had been completely installed along Springbrook, signaling completion of the installatfon of the main water lines at the Davis Park Road Site. Remainder of the Project TSCC is now in the testing phase of the water line installation project. This period of testing will also allow them time to set the meter boxes for each of the homes that are scheduled to receive the public water service. The setting of meter boxes and connection to the main lines is expected to begin during the week of June 26, 2000. According to the Project Manager for TSCC, the entire line installation project should be completed by August 15, 2000, well ahead of our projected schedule. If you have any questions or require clarification on any matter described within this letter, please do not hesitate to call me at (770)263-5443 or via email at nelsond@mail.rfweston.com Thank you very much for your time and consideration. k:\2006-1\048\lnspRpt.doc Sincerely, j)~{/,A.A.~ David D. Nelson, P.G. Site Manager 3 • Ci-,y of GASToNiA EvqiNEERiNq Divisio.'V May 4, 2000 F. Douglas Mooney, PE Roy F. Weston, Inc. Suite 200 5405 Metric Place Norcross, GA 30092-2550 Dear Mr. Mooney: Authorization to Construct • ... This letter is to confirm that the construction plans and specifications for USEPA TCE Site and 0300203-W comply with the City ofGastonia's Engineer's Report and the Water System Management Plan, dated January 31, 2000 and on file with the North Carolina Department of Environment and Natural Resources, Division of Environmental Health, Public Water Supply Section. The Authorization to Construct is valid for 24 months from the date of this letter. Authorization to Construct may be extended if the Rules Governing Public Water Supplies and site conditions have not changed. The attached Authorization to Construct and the engineering plans and specifications approval letter shall be posted at the primary entrance of the job site before and during construction. Approval must be secured from the City of Gastonia before any construction or installation if: Deviation from the approved engineering plans and specifications is necessary; or There arc changes in site conditions affecting capacity, hydraulic conditions, operating units, the function of the water treatment process, the quality of water to be delivered, or conditions imposed by the City in any approval letters. Upon completion of the construction or modification and in accordance with Rule.0303, the applicant shall submit a certification statement signed and sealed by a registered professional engineer stating that construction was completed in accordance with approved engineering plans and specifications, including any provisions stipulated in the City's engineering plan and specifications approval letter. Once construction is complete, and the certification statement is received, the City will grant Final Approval in accordance with I SA NCAC I SC.0309 (a). Therefore, no construction, alteration, or expansion of a water system shall be placed into service until the City has issued Final Approval. Sincerely, J;;f~ ~:i~ Thorne Martin,IE Assistant City Engineer PO Box 1748 •Gastonia• North Carolina• 28053-1748 (704) 866-6761 • Fax (704) 864-9732 • Cr,y of GASTONIA ENC,JNEERJN(j Dw1s10N March 20, 2000 Jennifer Wendel EPA Regional Office 61 Forsythe Street Atlanta, GA 30303-8960 SUBJECT: PERMIT 0300203-W • 3259 Linear Feet of 6" I 506 Linear Feet of 8" and 825 Linear feet of 12" waterline to serve the TCE site on Davis Park Rd Dear Ms. Wendel: In accordance with your completed application received March 14, 2000 we arc forwarding herewith permit number 0300203-W, dated 3-20-2000, to you for the construction of a water line distribution system to serve the TCE site on Davis Park Rd. This permit shall be effective from the date of issuance until rescinded, and shall be subject to the conditions and limitations as specified therein. If any conditions or limitations contained in this permit arc unacceptable to you, you have the right to appeal any such conditions to the office of the City Engineer within thirty days of issuance of said permit. Construction shall not commence prior to issuance of a Notice to Proceed at the Pre-Construction Conference. I Upon completion of the permitted extension, a certification must be received by the City of Gastonia, Engineering Division, from your Engineer certifying that the water distribution system extension has been installed in accordance with the approved plans and specifications. The certification statement is on page two of this permit. Please return a copy of the pennit with your Engineer's certification statement completed. The extension will not be accepted by the City until the certification statement is received. One (I) set of approved plans and specifications is being forwarded to you. If you need additional information concerning this matter, please contact David F. Dickson at 704/ 866-6021. Sincerely, _atA-i-<Y ~-b THORNE A. MARN, P.E. Assistant City Engineer pc: NCDNR Central Office NCDNR Regional Office Gaston County Health Department F. Douglas Mooney, PE Roy F. Weston, Inc. Suite 200 5405 Metric Place Norcross, GA 30092-2550 POBox/748 • GASTONIA • (704) 866-6022 • Notllll OulohNA • 28053-1748 FAX(704) 854-6654 • CITY OF GASTONIA PERMIT • For the discharg,· of Sewerage, Industrial Wastes, or other Wastes In accordance with the prov1s10ns of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and other applicable Laws, Rules, and Regulations for the Consolidated Water and Sanitary Sewerage System of the City of Gastonia. PERMISSION IS HEREBY GRANTED TO US EPA FOR THE construction and operation of approximately 3259 LF of 6", 1506 LF of 8", and 825 LF of 12" Waterline and AppurTenances to serve Davis Park Road, pursuant to the completed application received 3-14-2000, and in conformity with the requirements of the Department of Natural Resources and Community Development. This permit shall be effective from the date of issuance until rescinded, and shall be subject to the following specified conditions and limitations: 1. This permit shall become voidable unless the facilities are constructed in accordance with the approved plans, specifications and other supporting data. 2. Construction shall not commence prior to the execution of a Water and Sewer Agreement between the Developer and the City of Gastonia. 3. Upon completion of construction and prior to acceptance an operation of this permitted facility, a certification must be received from a professional engineer certifying that the permitted facility has been installed in accordance with the approved plans and specifications. 4. Construction to be in accordance with City of Gastonia Standard Specifications and Details. 5. A Pre-Construction Conference sl).all ve held between the City of Gastonia and the Contractor prior construction. • • • 6. The facilities shall be properly maintained and operated at all times: 7. This permit is not transferable. This approval is given with the understanding that upon installation of such works, the project shall be dedicated to the City of Gastonia who will operate the installation of the best accepted practice and in accordance with the recommendations of the Division of Health Services. The official copies of plans and specifications accompanying this application have been sealed and stamped with the serial number of this application - 0300203-W. Only such plans and specifications are included in this approval and any erasures, additions or alterations of the proposed improvements will make up such approval null and void. PERMIT NO. 0300203-W DATE ISSUED: ---------- THORNE A. MARTIN, P.E. Assistant City Engineer 3-20-2000 I, ______________ as a duly registered Professional Engineer in the State of North Carolina hereby certify that construction of these permitted facilities has been completed within substantial compliance and intent of the approved plans and specifications. Signature _________ Registration No. _____ Date ____ _ CITY OF GASTONIA • m@~UWrsiru ENGINEERING DIVISION ~1,-ll ~l!!J • APPLICATION FOR APPROVAL OF PLANS AND MAR, 1 4 2000 SPECIFI~ATIONS FOR WATER SUPPLY SYSTEM TO THE CITY OF GASTON] A.: CITY OF GASTONIA ENGINEERING DEPT. United States Environmental Protection Agency submits to the City of Gastonia plans (Name of Owner) and specifications prepared by __ R~oy'---F_._W_e_s_t_o_n~, _I_n_c_. _________________ of 5405 Metric Place, Suite 200 Norcross Georgia 30092 ________________________________________ for (Street or Box Number) (City) (State) (Zip) the installation or construction of ___ W.:_a.::.t e.:_r::..__:D:..:i:..:s:..:t-=r-=ic:.bccu.::.t=.io'--n:.:.__I:;.;mc.,p:..:r:...:o:..:v--=ec::m:.::e.:.:n.::.t=-s-__________ _ (Describe Project) Davis Park Road TCE Site at ____________________ _ (Name of Project) Gastonia, Gaston County, North Carolina (Location of Project) and herewith make application to the City of Gastonia for approval of such feature of said plans and specifications as relate to public health and the protection of public water supplies. This application is made under and in full accord with the provisions of Chapter I 30A-3 l 7 of the North Carolina General Statutes, and such other statutes as relate to water systems. The applicant agrees that no change or deviation from the plans ai1d specifications approved by ihe City of Gastonia will be made except with the written consent and approval of the City of Gastonia. REMARKS:-------------------------------- F. Douglas Mooney, P.E. (Type or print name signed above) Roy F. Weston, Inc. 5405 Metric Place, Suite 200 (Street or Box Number) Norcross, GA 30092 (City) (State) (Date) (Zip) pc/v.mup-app • • Engineer's Report (This fom1 to be filled out by engineer) ~@~UW!s@J MAR 1 4 2000 CITY OF GASTONIA ENGINEERING DEPT. Please altaeh all calculations with an estimate of on-site usage, not including fire flow. Residential Development Type of dwellings served (on-site): Single and Multi-Family Homes Maximum number of dwellings that will be served: _7_0 ________ _ Maximum estimated total demand (300 gal/day/unit): -=-2=-l ,'-'9-"'0-"0 _____ _ Commercial/Industrial Development Type of development: Maximum expected on-site demand (gal/day): _______ _ • • C,ry of GASTONIA EN(j!NEER'!V(j Dtll/5/0N i~nginccring Plans and Specs Approval March 17, 2000 F. Douglas Mooney, PE Roy F. Weston, Inc. Suite 200 5405 Metric Place Norcross, GA 30092-2550 THIS IS NOT AN AUTHORIZATION TO CONSTRUCT Dear Mr. Mooney, Enclosed please find one copy of the "Application for Approval of Plans and Specs". One copy of the referenced engineering plans and specifications bearing the Authorization to Construct stamp will be given to you at the pre-construction meeting. The contractor will also be given a set of plans and specifications bearing the Authori7.ation to Construct stamp and permit number for the referenced project. These engineering plans and specifications arc approved under Pcm1it Number: 0300203-W, dated March 17,2000. Engineering plans and specifications prepared by Roy F. Weston, Inc., call for F. Douglas Mooney, PE. The enclosed approval contaibs conditions on the project as follows: 3259 linear feet of 6", 1506 linear feet of8", and 825 linear feet of 12" waterline to serve Davis Park Road TCE site. Please note that an "Authorization to Construct" requires both this approval of Engineering Plans and Specifications and an approved Engineer's Report, which complies with the Water System Management Plan and is on file at the City Engineering Dept. No construction shall be undertaken, and no contract for construction, alteration, or installation shall be entered into until. the City issues an Authorization to Construct letter in accordance with 15A NCAC l8C .0305 (a). One copy of each enclosed document is being forwarded to the NC DENR Regional Office and one copy is being retained in our permanent files. If you have any questions, please contact David F. Dickson at (704)-866-6021. Thank you, ~~ Thorne Martin,PE Assistant City Engineer Pc: James McGuire NC DEHNR Gaston County Health Dept. Eng plans specs app I PO Box 1748 • WSTONIA • (704) 866-6022 • Nond1 C..11ol1N11 • 28053-1748 fu(704) 854-6654 • C,,y of GASTONIA EN(jlNEERIN(j DtVISION April 5, 2000 Mr. Philip H. Vorsatz, Chief N. C. Site Management Section Waste Management Division U.S. Environmental Protection Agency Region 4 Atlanta Federal Center 61 Forsyth Street Atlanta, Georgia 30303-8960 Dear Mr. Vorsatz: • Enclosed is an (original) executed copy of the Letter of Agreement between the EPA and the City of Gastonia. Please advise as this project progresses. Should you have any questions or need further information, feel free to contact me at (704) 866-6738. Sincerely, Pc: Donald E. Carmichael, Director of Public Works/ Utilities Dennis J. Red wing, Deputy City Attorney Thorne A. Martin, Assistant City Engineer Reginald E. Davis, P.E., P.L.S., Asst. City Engineer Debby P. Key, Project Administrator JPB/ acf/ 043 PO Box 1748 • CAsroMA • Noml1 G,no/,NA • 28053-1748 (704) 866-6761 • FAX (704) 864-9732 UNll.STATES ENVIRONMENTAL PROTECT. AGENCY REGION 4 J. Philip Bombardier Asst. Director of Public Works/ City Engineer City of Gastonia P.O. Box 1748 ATLANTA FEDERAL CENTER 61 FORSYTH STREET ATLANTA, GEORGIA 30303-8960 March 28, 2000 Gastonia, North Carolina 28053-1748 Dear Mr. Bombardier: The United States Environmental Protection Agency (EPA) under the authority and requirements of the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA), 42 U.S.C. Sections 9601 et~ (The Superfund Law) will be constructing water lines in the Davis Park Rd. area of Gastonia to connect approximately 70 homes to the City Of Gastonia Water System. Hazardous substances, including tetrachloroethene (PCE) _and trichloroethene (TCE) have been discovered in groundwater in this area at levels above EPA action levels. As a result of these findings, and with community involvement, EPA has prepared a Record of Decision for the Site which outlines a plan for installation of the water lines. I EPA, through its prime contractor Roy F. Weston, Inc. (WESTON) and a subcontractor, will be initiating construction of the water lines. and related items in the near future and should be completing construction by September 2000. As reflected in the design documents and subcontractor solicitation materials already reviewed by the City, EPA contractors will construct and install the water lines and related items in accordance with City of Gastonia and State of North Carolina standards. The purpose of this letter is to request that the City agree, that after completion of construction and acceptance by the City, to take over the responsibility for operation and maintenance of the public portion of the water lines and related items shown on the final design plans for this Site. All rights and interests for the water line will transfer from El' A to the City at that time. Please sign below to indicate your acceptance (I have enclosed two signed copies), or respond separately to this letter. We appreciate your help and participation in this action to provide safe drinking water to the residents of the Davis Park Rd. Site area. Internet Address (URL)• http:flwww.epa.gov Recycled/Recyclable • Printed with Vegetable Oil Based Inks on Recycled Paper (Minimum 30% Pos1consumerJ ' . • • 2 This letter repJaces my previous letter to you on this subject dated.March 15, 2000. If you have any questions or would like to discuss this further, please call me at ( 404) 562-8789. cc: Jack Butler, Chief Superfund Section NCDENR David Nelson WESTON 5;,~~ Philip H. Vorsatz, Chief North Carolina Site Managenient Section Waste Management Division ... ;/ City ofG~sto .· ··· ·ncurrence: ✓ ,' ~/: / /'/;✓~ APnr: - /'/'✓, • • C,ry of GASTONIA -·:.~.:::.-.========:l== April 5, 2000 Mr. Philip H. Vorsatz, Chief N. C. Site Management Section Waste Management Division U.S. Environmental Protection Agency Region 4 Atlanta Federal Center 61 Forsyth Street Atlanta, Georgia 30303-8960 Dear Mr. Vorsatz: RECEIVED APR 1 7 2000 SUPEAFUNO SECTION Enclosed is an (original) executed copy of the Letter of Agreement between the EPA and the City of Gastonia. Please advise as this project progresses. Should you have any questions or need further information, feel free to contact me at (704) 866-6738. Sincerely, ~:;:'.H~H~~~~ Ass ec or o lie Works/ City Engineer Pc: Donald E. Carmichael, Director of Public Works/ Utilities Dennis J. Redwing, Deputy City Attorney Thorne A. ~~1ar-tin, Assistant City Engineer Reginald E. Davis, P.E., P.L.S., Asst. City Engineer Debby P. Key, Project Administrator JPB/ acf I 043 PO Box I i48 • C-1sro.v,.1 • Nomi, Cu1oh,vo • 28053-1 i48 (i04) 866-6i6/ • hr(i04) S64-9i32 • • UNITED STATES ENVIRONMENTAL PROTECTION AGENCY RccGION 4 J. Philip Bombardier Asst. Director of Public Works/ City Engineer City of Gastonia PO Box 1748 I\TLAIHA crnERAL CENTE" 61 FORSYTH STREET ATLANTA GEORGIA 30303-8960 March 28. 2000 Gastonia. North Carolina 28053-1748 Dear Mr. Bombardier The United States Environmental Protection Agency (EPA) under the authority and requirements of the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA), 42 U.SC Sections 960 I et~ (The Superfund Law) will be constructing water lines in the Davis Park Rd. area of Gastonia to connect approximately 70 homes to the City Of Gastonia Water System. Hazardous substances, including tetrachloroethene (PCE) and trichloroethene (TCE) have been discovered in groundwater in this area at levels above EPA action levels. As a result of these findings, and with community involvement, EPA has prepared a Record of Decision for the Site which outlines a plan for installation of the water lines. EPA, through its prime contractor Roy F. Weston, Inc. (WESTON) and a subcontractor, will be initiating construction of the water lines and related items in the near future and should be completing construction by September 2000. As reflected in the design documents and subcontractor solicitation materials already reviewed by the City, EPA contractors will construct and install the water lines and related items in accordance with City of Gastonia and State of North Carolina standards. The purpose of this letter i~ to request that the City agree. that after completion of construction and acceptance by the City, to take over the responsibility for operation and maintenance of the public portion of the water lines and related items shown on the final design plans for this Site. All rights and interests for the water line will transfer from EPA to the City at that time. Please sign below to indicate your acceptance (I have enclosed two signed copies), or respond separately to this letter. We appreciate your help and participation in this action to provide safe drinking water to the residents of the Davis Park Rd. Site area. In112rne1• Address I_URU • nttp:.·1www.eoo.gov Recycled/Rl!Cy::labie • Printed ','.'l\tl Vt:~11:'lallle Oil B<lSf!(l lf\1<.S u:1 RAC'/Cl•;'(l f°',tl)';! (f,111llll1Ufn '.,f)'", Pnr,;crinSIJl!li;;) • • 2 This letter replaces my previous letter to you on this subject dated March 15, 2000. If you have any questions or would like to discuss this further, please call me at (404) 562-8789. cc: Jack Butler, Chief Superfund Section NCDENR David Nelson WESTON Philip H. Yorsatz, Chief North Carolina Site Management Section Waste Management Division ,·' /' ,./' ,/,· City o~f Gasto.ni:,,concurre1ice: /// . vjl. _ __,/ ·" ' .. ED STATES ENVIRONMENTAL PROT.ION AGENCY J. Philip Bombardier Asst. Director of Public Works/ City Engineer City of Gastonia P 0. Box 1748 REGION 4 .. _ ATLANTA FEDERAL CENTERR ECE IVED 61 FORSYTH STREET ATLANTA, GEORGIA 30303-8960 MAR 3 0 2000 SUPERFUND SECTION March 28, 2000 Gastonia, North Carolina 28053-1748 Dear Mr. Bombardier: The United States Environmental Protection Agency (EPA) under the authority and requirements of the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA), 42 U.S.C. Sections 9601 et~ (The Superfund Law) will be constructing water lines in the Davis Park Rd. area of Gastonia to connect approximately 70 homes to the City Of Gastonia Water System. Hazardous substances, including tetrachloroethene (PCE) and trichloroethene (TCE) have been discovered in groundwater in this area at levels above EPA . . action leyels. As a result oft~ese findings, and wi\h community involvement, EPA has prepared a Record of Decision for the Site which outlines a plan for installation of the water lines. EPA, through its prime contractor Roy F. Weston, Inc. (WESTON) and a subcontractor, will be initiating construction of the water lines and related items in the near future and should be completing construction by September 2000. As reflected in the design documents and subcontractor solicitation materials already reviewed by the City, EPA contractors will construct and install the water lines and related items in accordance with City of Gastonia and State of North Carolina standards. The purpose of this letter is to request that the City agree, that after completion of construction and acceptance by the City, to take over the responsibility for operation and maintenance of the public portion of the water lines and related items shown on the final design plans for this Site. All rights and interests for the water line will transfer from EPA to the City at that time. Please sign below to indicate your acceptance (I have enclosed two signed copies), or respond separately to this letter. We appreciate your help and participation in this action to provide safe drinking water to the residents of the Davis Park Rd. Site area. Internet Address (URL)• http://www.epa.gov Recycled/Recyclable • Printed . ...,,r:h Vegetable Oil Based Inks on Recycled Paper (Minimum 30% Postconsumer) • • 2 This letter replaces my previous letter to you on this subject dated March 15, 2000. If you have any questions or would like to discuss this further, please call me at ( 404) 562-8789. cc: Jack Butler, Chief · Superfund Section NCDENR David Nelson WESTON Philip H. Vorsatz, Chief North Carolina Site Management Section Waste Management Division City of Gastonia concurrence: • RECiVED · 11111\n ~-r,, ?nno UNITED STATES ENVIRONMENTAL PROil'ECTION AGENCY REGION 4 J. Philip Bombardier Asst. Director of Public Works/ City Engineer City of Gastonia P.O. Box 1748 ATLANTA FEDERAL Qf;N~FUND SECTION 61 FORSYTH srnr~ -·. ATLANTA. GEORGIA 30303-8960 MAR l 5 2000 Gastonia, North Carolina 28053-1748 Dear Mr. Bombardier: The United States Environmental Protection Agency (EPA) under the authority and requirements of the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA), 42 U S.C. Sections 190 I et~ (The Superfund Law) will be constructing water lines in the Davis Park Rd. area of Gastonia to connect approximately 70 homes to the City Of Gastonia Water System. Hazardous substances, including tetrachloroethene (PCE) and trichloroethene (TCE) have been discovered in groundwater in this area at levels above EPA action levels. As a result of these findings, and with community involvement, EPA has prepared a Record of Decision for the Site which outlines a plan for installation of the water lines. EPA, through its prime contractor Roy F. Weston, Inc. (WESTON) and a subcontractor, will be initiating construction of the water lines and related items in the near future and should be completing construction by September 2000. As reflected in the design documents and subcontractor solicitation materials already reviewed by the City, EPA contractors will construct and install the water lines and related items in accordance with City of Gastonia and State of North Carolina standards. The purpose of this letter is to request that the City agree, that after completion of construction and acceptance by the City, to take over the responsibility for operation and maintenance of the public portion of the water lines and related items shown on the final design plans for this Site . . ' lnt9m'at Address (URL)• http://www.epa.gov Recycled/Recyclable• Pnnted with Vegetable Oil Based Inks on Recycled Paper (Minimum 30% Postconsumer) • • 2 Please sign below to indicate your acceptance (I have enclosed two signed copies), or respond separately to this letter. We appreciate your help and participation in this action to provide safe drinking water to the residents of the Davis Park Rd. Site area. If you have any questions or would like to discuss this further, please call me at (404) 562-8789. cc: Jack Butler, Chief Superfund Section NCDENR David Nelson WESTON s~'(S Philip H. Vorsatz, Chief North Carolina Site Managemeni·Section Waste Management Division City of Gastonia concurrence: • Roy F. Weston, Inc. Suite 200 5405 Metric Place Norcross, Georgia 30092•2550 ® 770-263-5400 • Fax 770-263-5450 wvvw.rfweston.com Mr. Phil Vorsatz Dr-'"' U.~. Environmental Protection AgencyH:: !,_.,.E /VEO 11 Floor, North, WMD 61 Forsyth Street SW MAR 13 2000 Atlanta, Georgia 30303 RE: Submittal of Sediment an~Ult~b~~~nYr~Ytb~ and NCDOT Encroachment Agreement U.S. EPA Contract No. 68-W?-0026 Work Assignment No. 043-RDRD-04PN Document Control No. RFW043-2C-AEUX W.O.# 20064-043-100-1180 Dear Mr. Vorsatz: March 8, 2000 Attached is one copy of the "Financial Responsibility/Ownership Form Sedimentation PoUution Control Act". As you will note, this form has been partially completed by WESTON, principally within those questions not requiring a signature. Please have the necessary person within the agency complete Part B, Number I only, and sign the back of the form at the bottom of the page in front of Notary Public, which will provide witness to your signature. This form can be sent separate from the Sediment and Erosion Control Drawings to Steve Allred of the Mooresville Regional Office of_NCDENR; however, as you know, the form should be completed as soon as possible. In addition, a copy of the North Carolina Department of Transportation Right of Way Encroachment Agreement has also been attached for legal review by your office. Please note that the form is from July I, 1977 and, according to the Gaston County NCDOT representative, has not been updated since. Thank you for your time·and consideration. If you have any additional questions or require clarification, please do not hesitate to contact me at (770)263-5443 or via email at nelsond@mail.rfweston.com. k: \2 0064 \04 3 \letters \ltdd n02 0 Sincerely, ~a David D. Nelson, P.G. Work Assignment Manager • • FINAN~IAL RESPONSIBILITY/OWNERSHIP FORM 1!:, :'r SEDfMENTA TION POLLUTION CONTROL -ACT:c:;· , 1 ,. '', .. . ' . No person may initiate a land-disturb_ing activity on one .or.more acres as covered by the Act before this form and an acceptable erosion and sedimentation control plan have been completed and approveci"by the Land Quality Section, North Carolina Department of Environment and Natural Resources. (Please type or print and, if question is not applicable. place NI A in the blank). Part A. I. Project Name DAVIS PARK ROAD TCE SUPERFUND SITE -WATER DISTRIBUTION IMPROVEMENTS 2. Location of land-disturbing activity: County __ G,,,A"'S'-'T,.,O"-N,__·_· _-_______________ _ City or Township__,G.,_.A,.S .... T..,,Ou,Nu.J.cA~---------· and Highway/StreetDAVIS PARK ROAD 3. Approximate date land-disturbing activity will be commenced:_-=MA=Yc..·-=l_,_,-=-20=-o=-o=--' ________ _ 4. Purpose cf development (residential, commercial, industrial, etc.): RESIDENTIAL WATER SERVICE EXT.· . . - 5. Total acreage disturbed or uncovered (including off-site borrow and waste areas):_.,?---"A,..CBo..Ec..Si:•~' ___ _ 6. Amount of fee enclosed$ $50.00 (see attached letter) 7. Has an erosion and sedimentation control plan been fiied? Yes XX No ___ Enclosed __ _ (revised plan issued also) S Person to contact should sediment control issues arise during land-disturbing activity. Name F. DOUGLAS MOONEY'." Telephone--'Y-'-7-"0_-::.;26"-'3c...-...=5c::4..::;0.::_0 ________ _ 9. Landowner(s) of Record (Use blank page to list additional owners): N.C. Department of Transportation (ROW -State Roads) ------'-------'-------- 10. Nam 1! ( s) P.O. Box 47 Division 12 Curn:nt Mo.iiing Address Shelby, North Carolina 28151 City State Zip Recorded in Deed Book No. ______ _ Curre:i.t Slre:::~ Addn:::;s St:J.h:! Zip Page No. _________ _ Part B. L Person(s) or firm(s) who are financially responsible for this land-disturbing activity (Use a blank page to list additional persons or firms): Nrune of Person(s) or Finn(s) Mailing Addn::ss Street Address City State Zip City State Zip Telephone .,,}'-' ,J • • 1, ~· _:,£;\l 2. (a) lfthe Financially Responsible Pa11y is·not a resident ofN011h Carolina give name and address ofa >i;J/. North Carolina Agent: · T'' Name MJiling Address Street Address City Srate ... Zip City State Zip Telephone Telephone (b) If the Financially Responsible Pa11y is a Pal1nership or other person engaging in business under an assumed name, attach a copy of the ce11ificate of assumed name. If the Financially Responsible Pal1y is a Corporation give name and street address of the Registered Agent. ,,· Name of Registered Agent Mailing Address St.red Address City StJte Zip City State Zip Tde;::ihom:: Tdt::phone The above information is true and correct to the best of my knowledge and belief and was provided by me under oath. (This form must be s_igned by the financially responsible person if an individual or his attorney-in-fact or if not an individual by an officer. director. partner, or registered agent with authority to execute instruments for the financially responsible person). I agree to provide corrected information should there be any changes in the · information provided herein. Type or print nrunt:: Signarure Title or Autlioriry Date L ________________ , a Notary Public of the County of _________ _ Seate of North Carolina, hereby ce11ify that _________________ appeared personally before me this day and being duly sworn acknowledged that the above form was executed by him. Witness my hand and notarial seal, this ______ day of _____________ , 19 __ _ Seal Notary My commission expires _____________ _ INSTRUCTIONS \/hen the appl leant is a corporation or a municipality, this agreement must have the corporate sea; amd be attested by the corporation secretary or by the empowered city official, unless a waiver or corporate seal and attestation by the secretary or by the empowered City official Is on file In he Raleigh office of the llanager of Right of \lay. In the space provided ln this agreement for execution, the name of the corporation or municipality shal I be typed above the name and title of 11 I persons signing the agreement should be typed directly below their signature. This agreement must be accompanied, in the form of an attachment, by plans or drawings showing the following applicable In format Ion: I. A 11 roadways and ramps 2. Right of way I Ines and where appl lcable, the control of access I Ines J. Location of the existing and/or proposed encroachment ~-Length, s lze and type of encroachment • 5. llethod of lnstal lat Ion 6. Dimensions shc,...,ing the distance from the encroachment to edge of pal/ement, shoulders, structures, etc. 7. Location by highway survey station number. If station number cannot be obtained, location should be shown by dis- distance from some Identifiable point, such as a bridge, road, intersection, etc. (To assist in preparation of the encroachment plan, the Department's roadway plans may be seen at the various Highway Division Offices, or at the Raleigh office.) 8. Drainage structures or bridges if affected by encroachment (show vertical and horizontal dimensions from encroach- ment to nearest part of structure) 9. Kethod of attachment to drainage structures or bridges. 10. Kanhole design 11. On underground utilities, the depth of bury under all traveled lanes, shoulders, ditches, sidewalks, etc. 12. Length, size and type of encasement where required. I). On underground crossings, notation as to method of crossing -boring and jacking, open cut, etc. I~. Location of vents GENERAL REQUIREKENTS I. 2' 3' 4' 5' 6. 7. 8. Any attachment to a bridge or other drainage structure must be approved by the Head of Structure Design In Raleigh. prior to submission of encroachment agreement to the Division Engineer. All crossings should be as near as possible normal to the centerline of the highway. Hfninu.un vertical clearances of overhead wires and cables above al I roadways must conform to clearances set out In the National Electric Safety Code. Encasements shall extend from ditch line to ditch line In cut sections and 5' beyond toe of slopes In fill sections. All vents should be extended to the right of way I lne or as otherwise required by the Department. All pipe encasements as to material and strength shall meet the standards •nd specifications of the 0ep1rtmcnt. Any special provisions or specifications as to the performance of the work or the method of construction that may be required by the Department must be shown on a separate sheet attached to encroachment agreement provided thlt such information cannot be shown on plans or drawings. The Department's Division Engineer should be given notice by the applicant prior to actual starting of lnst-1H1tlon included in this agreement, //.o.(Q I C cl .1\/TA-6 T ROUTE ----------• PROJECT D EP/\RTMEIIT OF TR/INS ran T /IT I 011 -/1110- -/1110- • ST/\TE OF NORTII C/\ROl.lll/1 COUNTY OF TIIREE P/\RTY RI GIIT OF ',//\Y ENr.RO/\CIIMEI/T /\GREEMEIIT ot/ PRIH/\RY /IND SECONO/\RY SYSTEM the clay of part; ·and 19_ THIS. /\GREEMEIIT, made and entered into this by and between th~ Department of Transportation, pnrtyof the first arty of ti second pa rt ; party of the and third part, W Tt/ESSETII: TH/\T WHERE/IS, the party of· the second part des I res way of the ·public road ·deslonated as Route to encroach on the ri!)ht of located witl1 tl1e construction ancl/or erection of WHERE/IS, it Is to the material ;,rfvantage of the party of the second part to effec1 this encroachment, and the party of the first part, in the exercise of authority. con- ferred upon It hy statute, is s,i 11 i no to permit the encroachment wl th In the I imi ts of the ri!)ht of way as indicated, s11b_ject to the conditions of this agreement; 110\·/, THEREFORE, IT IS /\GREED that the p;,rty of the first part hereby orants to the party of the second part the ri9ht ,ind rrivileoe to make this encroachment as shown on attached plnn shcr.t (s), srcr.ific,,tions, nnd srccic1l provisions h,hich ore _made a part hereof upon the fol lowi n!J conditions, to wit: That the ln11t<'lll11tJon, opor,11tlon, nncl m.,Jnlon11nce of the .,bov" rle11crlbed f.,cl)1ty will be t'lccomr,llnhnd In c'IC• corrl,.mce 'With.the poHty of tho flret part'n I.,te11l 1101.JClr..':i Allll PR()(;f.01/Rf.S F'OI? Ar.C(Jt-l0/1ATltU; 1rrJI.JTJ[~ O!/ JIJr,lfNAY f?J(;Jf'/~j-Or-WA'f, anrt 1111ch revl11Jon11 ,3nc\ .,mondmonta thnruto ,lll m-:iy7)0lri-orrocr-11TTr;t,c!.it"oOrtldo <'l(Jfllnmr.111. ln- "fo"r'm.iTT'oii'"""dDto tlu111e poltcloa ond proc:ecluroa m.,y ho ohtnJnod from tho Olvlolon £nqlneer or Stato Utility J\qnnl of the puly of the firet put. That the .,.,Id party of the secnnd p.,rt hlnrlo ,,nd ohllqr'lto, hlmnnlf to lnatnll nncl m<'llntllln thn encronchlnq facility In 1111r.h rude onrl pror,er conclltlt'.Jn lhr'Jl It 1o1lll not lnlerfer11 1o1lth or end,,nr_p,r lrnvfll 11pon 11n1d hlql,w.,y, nor ohatruct nor Interfere with tho propllr m,,lnlt!n.,nr.e theroof, to rolmh11r110 the party of tho flrt1l p.,rl for the cont incurred for any rep11Jr11 or mnlnton,rnce lo lta ro,1d1o1,1y, .,,.c1 ntructuron nnce111111ry d11e to thn ln11t.,)lllllon nnrl r.-.:- latence ot the l.,cilltJea of lhu fJdrly nf tho aeconcl p.ut, ,lnd If <'II ,my time tho p<'lrty of the flr11t p<'lrl 11hllll require the removo!ll of or chan11oa In the loc.-tlion of the ulcl f.,cllltlon, thnt ttu1 nc'lld p.,rty of th" aeconcl pclrt bind• hlmaelf, hla 1111cce11nor11 ,oincJ dsal11n11, to promptly rcmovo or allor the en1d tncll1t1en, Jn order to conform to th11 11aid requlr'ement, wllhout clny coat to tl,e , ... irty ot tho llral part. Thot the party of tho Docnnrl l')drt MJref!11 to provlclo rlurlnq con11tructton and 11ny 1111h11er,11ent IMinter.,oincn prorr.r 11lqn11 alqnal llqhln, flclCJ'Tl'Ut:'I nnd ntlinr '-'nrnlnq duvlcea for the protection of traffic In conformc,ncn 1o1ith thn J.,tnat J.\1m1o!li on llnltorm Trnfflc Control llf:vlccn tor :'jtrr.cln .,net lfl~Jl\,1.-tya .,ncl J\mondmenl11 or S11pplement11 therfllo. lnfor- ;;;:;TTon"":;;J((J tho abovor\iT;ii"-411ir7C,'j;Jt:;riW\G"in.iy"f,0-0fiT:;rn~,l (fllm-tho OlvJ11lon Cnolneer ot the porty of thn flrat Pel rt, Thot tha po!lrty of the llf!concl pc,rl hflrr.hy nqrnna lo lndf?mnlfy """ 1111vn h,Hmlona thfl r:,nrty of tfu, (Jrnt J),Hr frora all cl,tm,.qea aut1 clo!1l1111 for' dclmdlJn lh.,t may ,irlno hy ru,111on of tho ln11toll<11tlon <11nd fflcllnlenonco of thin nn- cro"lcl1111ent. · Th<11t tho J"lclrly of tho nncnnrl f"l"rt ,11Jrnnn to rnntorn nl I <'lrn<1111 ll\11t11rh•d durlnl'J lnatnllntlon nnd mrdntnnnnr.r, to the 0<11tlnf.,,:tlon of lhtt IJlvlalon f.n(Jln,ior of llin r:,,uly of tho flrnt r>.1rt. Tho pnrty of the neconrl ri.,rt l!fJreen to exorclan every reaaonabln pr1?C<1111llun 1hirlnq cnriotructlon and m<llntenc1nce to prevent orocJlnq of 11011; ellllniJ or i,ollt1Hon of river•. atroamfll, lak-r.11. rnnnrvo1r11; nlher w.,tnr lmpo,,ndme,nls, 1Jro11nd 1111rfo!lct?11 or othor propnrly; or pollution of the elr. Thurn 11hall he t:om1,ll,1ncr. with cll•Plicahlu r1il1111 cltHI rel'}11l11tton11 of thn 1/orth 1;11rollnn /Jjvjaion of i:nYJro11mnnt.,.! H.,11.1,,r,,n11r.l, /!r.rll, 1·,.,0\111,1 ~cdlm1intnl Ion l'ontro,l C:omml1111lon, and 1o1lth ordln.,ncu" .,nrl reg11l<11llonn of V<'.lflouu co1mtlo11, m11n1.::1p,dJtic:1 .,,11! other ottlcl.,J "'Jcncion rol<'llin9 lo poiiullon·11rnt•en:Jo11 .1r,r\ control. Whnn any ln11toll.,tton Of lt\t'llnlcn,,ncc oporclllon cllnl11rh11 tho <1ro11nrl nurfllco clnrl the oxl1tllnq 9roun,/ r.ovnr; the p,oirly of the llccon1I p.-trl cl'7rcn:1 lo remove ,"Jnd rcr,L,cc lhe ,odor otherwlno reealclhl!nh tho 9r11nn covf!r to tnl!lol the acll!Hlo!lctlon of tha lllviolc,n t:nqinear ol \hn p.11ty of !ht first pdrt, Th,oit thG porty of the aocon<I p.,rt 11qrnr.11 to 1111n11mo tho .,ctu.,) co11t of any Jn1tpoctfon of lh1t 1o1ork: conalrlorod In he neco1111.,ry by lha flJvlnion tn11lnuor of lhn J),Hly o/ lhn !lr1tl pnrt. Thnt thn fMrly of !ho nncnn,I p,,rl .v1rr.r.n lo h,1vn ,1v.,l),1hlr. .,1 1hr. cnn11tr11ctlon alto, .,t ,ill atn,cllon, a copy of 1111• .icirnnmont :1ho1o1ln11 cvltle11r.o1 o( ,1pruov,d hy tho pdrly o( the flrnl p.,,t. flTnl p.,rt rcaervea the rlqht to utop .-tll 1o1orl.'. 11nlc11:1 ovldunce of np11rovol con be nhown. llrn~n d11rJnr1 r.nn- Thn J),'lrty of lhn flrcvldorl th1t -work r:ontnlruul In lhln .,..,rr.r.mr.nl la hcln.-, r,or/ormttd on n com11lnlncl hlqh-wny opnn In tr.,fflr.; lhn p-,rty ot tho ,econd fMrt d')rcc11 to ..,1vo -wrltlr.n nollr.r, to \hu lllvl11lon 1:nQln1tnr of lht1 pnrty of tlin flrnl p,111! l ••hon .,11 -wor\'.. cont.,lnecl h1tr1tJn h11, benn r.ninr,letod. llnlC"11n nr,cclllcnlly rnrp1n11lnd hy tho 11,,rty of 11111 llrnt pnrl, I o, t "Ji, ~-.•~n notico of co1t1plctlon of 1o1or\:: on hl11l11o111y prc..Jocl1t unolor cor111tn1ctlon 1o1tJJ not be rmpdrncl. 1110.,• ''• r"l J,, ti fr lr•t ti,. o,. ii, "41"t C'"o 1'J '• ro " r:.1 'rtt It l"Jfll,t ••r.-• ''c,,r: 0~ .,: ,,,.r:,'"1~., .. ')' 4t l'Jr,/''ic.•,., 11 '1 lo·'"'J •1 . ' wutk u:,ti'i''~1i~'•j~~'i'Jlty 1,ao bo~1; U~uu1,1ld.· 111lt1 co111pl1a1u.:u ur ,o. µ,:uly ul tho flrol vait, by both portl•• that lhlo .:11,,~uo1no11t 11h.Jll boco1no vold lf oCtunl conotructlon of th• work o lier• n 1a not be9un within 0110 llJ yo,u frma tho d.ilo or oulhorl1,atlo11 hy llio 1>-0rty of lhe lir11l µart wrltlen waiver h oacuretl by tho porly of th., oocu1HJ p.lrl from llio µarty of tho f1rnt po.rt. Durlnq the perlorMnce of thh contra.ct) tlio e••.:md party, for ilaoll, lta ao11l9nou and ouccoaaora in l11loroat (hereinafter roferred lo au the '"conlraclor'", ayroco oo lulluwo: •• "· c. d. .. Compliance with llegulal101101 'l'ho contrUctur oli,111 com1tlY with tho lll'f.JUltJ\lono rolollv" lo 1101n.llocrlml11- otlo11 lll Jedorally-oaahled pro9rorn11 of llie U; :.i. Ucp,,rl1ncml of 'l'r.J111:1i,orll)tlon, l"ltlo 19, Cot.lo of rP.t.leral Ucqulallone, Port 21, a• tl1•Y may Uo a1qu11Jod lru,n ll11m \u \h,u, lhcrol,,,,llor rolerroLl lo ,10 \ho llequlo- t1onoJ, whlch are heroin lncorporaloU,Ly 1ulu11.wcc ,111J a1JJu J µJI\ ul tl,lo cuulrac\. /1011dlncrlmlnatl0111 'l'ho conlr,1clor, vlth ruq,,rd \0 tho wor~ 11orforo111J by It <lurl,1? the co11\rnct, ohnll not i.119crlral'iiifiotttho QroumJo of raco, culor, u1 1111llu11,il orlqlli 111 lhu ool•,c\1011 a11J rolontlOn of oul.,co11- traclors, lncludl119 procuremenlo o/ 1n,1lorlols a1ul leatiuo uf •1qul)11111ml. Tho conlroclor ahall not µ,ullcl- pale either dlroctly or indirectly in tho Jlocrlmlli.1llo11 µrohlbllo<l liy !Jocllo11 21.5 of the Re,;mlatlonn, lncludl11c., e1nploy1nonl practicoo whou tho coutrocl co,orn ,1 JHUQrum oot fu1 th 111 lipµou<llx U of \ho l1oqulollon11, !Jollclt,"lllona for Subconlr11£1L.....J.DcluLll11y J>rocurt'1mnilo of f.l1lorJ,1ln ;11,d Eu~: ln all 11ollcllal101111 elther by competitlvo bltltll119 or 11eyollo1lTo11 1,uiluOy ll,u conlr,1clor for vod: lo bo perlor11111d under a nub- contract, inclu<linQ procureni•nh of Nterl,"lla or looaoa of oqulpmo11l, oach poloutlal aubc011lroclor or auppliar ahdl be notified bt the contractor o/ tho controctor'o 01Jlh,1at1011e undor thia co11tuct a11d lh• Ru9ulAU~:-.:i ,·reldiv,g, t.o. noudbt:rlrv.!untion en ·,Uit? .. ;lrou11tl~ oI raca, colo.i:,. or natior1ol origin. l11rorl'toltlon 1t1J nr.l!!!!JI: · The.cr,ntractor sh.1111 pro,,ldl' all lnlor,n,111lu" 111J rci,ort, ~r•1ulrl'd lly the 11.egul•tlo,.,, or dlr11,ctlve1 ls11.1ed pursuant thereto', and ,1,all pert111lt •cccu to lu .boolu, rec:unh, 11ccount\, other ,ourc:e\ of lnforl'latlo", a"d It, l•cllltle, II lftly be deter111lned by the Dep:irt1111mt of lran,porutlon or the rederal lll9hway Ad"dnl\tr•tlo" to be pertlroerot to uceruJ., co"'pll•"ct with such ReguhtlOf'!S or d\rectl1'u, \#here •"Y lnlorm,Hlon fl'qulreJ of ,11 co,11ractor 1, lro the eitcluslve PO\\l'Ulon of anothl'r who hlh or refuut lo furnish thl, lnforrnulon, the contrai:tor shill so certify to the Dep1rtml'nl of ,lransportatlon, or the Federal Highway Ad•lnhtratlon as •ppn,.prlue, at1d ,hall set lorth wh•t efforts It ha, 1111de lo obtain the lt1for111ulon. Sanctions for lloncC."'{1lhnce1 In the l'Yl'flt of the contractor's nor,Co<"pllance wllh the t1omll,crl111ln11lon pro,,lslon, of thl1 contract lr.e Uepartn,ent of lr1111porutlot1 1hall l'"1101e ,uch ctmltact u11ctlu111 u It or tl.e federal lllghw.ay Adml11l1tratlon may determln" to be tipproprht.e, lnc.ludlng, but. no\ 111111 ted to, ,(I) 'wlthholdlng or pay•enU lo the contr•ctor under the contr.act u11tll the contr1ctor co111pllu, and/or {2) cancell•tlon, ter•lru,tlon or su1p111ulu11 of tl11: cuutract, In whole or in p•rt. r. lt1corpor:itlon of rroYlslonsi The contractor 1ho1II l11cluJe the pro,,lslon, or p,H~9ravi., "a'' through "I" In every 1ullcon1ract, Including procurements ol •Uerlals anJ leases of eflulpment, unlciu e11c,npt by the llc•1ulatlon1, or directive\ luued pur\uOlnt thereto. The contractor shall ul\e such action with respect to a11y subcontract or procurc1nent •• lhe IJepartment or Trani;porutlon or the Federal lllghw•y Administration 111ay direct as a n1ean1 or enlorclnv such pro,,l,lons lncludln9 sanctlot11·for nonco111pllance1 Providedthowe'ler, that, In lhe nan\• contr•ctor becomes l11volved In, or IJ threatened with, lltl9atlon with a u,bcon1r.actor or supplier as• r111ult of suc.h direction, tho conractor 111.ay request the Dep.artment ol lran1portallon to enter Into such llti9.atlon to protect the Interests of the St:ite, and, In •ddltlon, the contractor ,nay rcqucll the United State\ to enter Into 1uch litigation to protect th• Interests or t.he.Unltad States, That.when title to the .subject that constitutes the aforesaitl encroachment pasees from the party. of the second part and vests in the party of Uie third part, the party''of the third part agrees to usswue ull respu11siul lities n11d rights a"'J to perform all obligations as ag,·eetl to herein uy the purty of the secoutl part. IN WITNESS WHEREOF, each o.f the parties to this agrcc111c11t has caused the same to lie executed in the day anti year first uuovc writte11. , lJEP/\1\TMEHT OF TR/\IISPORTAT I 011 UY UlVlSlON ENGINEE!l WlTNESS: Seconu Party WITNESS: Thiru Party • • • • • UNIT~ STATES ENVIRONMENTAL PROTECTION AGENCY REGION 4 ATLANTA FEDERAL CENTER 61 FORSYTH STREET ATLANTA, GEORGIA 30303-8960 JAN J 9 1999 Mr. Jack Butler North Carolina Division Waste Management North Caroli,-,a Department of Environmental, and Natural Resources P.O. Box 29603 Raleigh, North Carolina 27611 National P1·i0~·ities Lj_st Proposed Rule #27 Final R.1:.J.e #23 Dear Mr. Butler: JAN 1 9 1999 SUPERFUND SECTION The Agency &nn::.unced on J·ani....i.a1.y 19, :!.999, in the Fecl.s_~.:._e:.l• Register, Proposed Rule ,21 and Final Rule #23 to the Nati~nal Priorities List (NPL}. This rule pJ:oposes to add 11 site~., to finalize 17 sites to t~e NPL. Region 4 sites are as follows: Proposed Rule #27: 1. American Brass, Heacllanc., Alabama Georgia-Pacific Corporation Hardwood Sa\,rrnill, Ply-mouth., No:::-th Carolina. Final. R"Jle #23: 1. Davis Park Road TCE, Gastoni::i, North Ca:r:olina Various background and supplementary information pe:rtaining to the rule is lOcated on the Internet. The ir1.for:-matic,r; ca.n be accessed from the S"Jperf'cmd homepage unde:::-"What's New" <ind 11 Auxiliary Information,.. If you have any questio!l.s, ple.:j.5e contact. me at 404/562-8817. cc: )1;, . ?at De?osa, NCDEtJR Sincerely, cj=-:.:~.[l:'~ Region 4, NPL Ccordir1atc~r Site Asse3sme!l.t P!:'ocess Ov~ner Internet Address (URL) • http://www.epa.gov Recycled/Recyclable• Printed wnh Vegetable Oil Based Inks on Recycled Paper (Minimum 25% Postconsumer)