GEI Consultants, Inc. GEI Consultants, Inc. ATLANTIC ENVIRONMENTAL DIVISION AugUSt 21, 1998 188 Norwich

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  • GEI Consultants, Inc.

    SDMS DocID 2079866

    ATLANTIC ENVIRONMENTAL DIVISION

    VALIDATED ANALYTICAL RESULTS PRIVATE GROUNDWATER WELL SAMPLES COLLECTED MAY 1998

    FORMER UGI COLUMBIA GAS PLANT COLUMBIA, PENNSYLVANIA

    Submitted to:

    PP&L Two North Ninth Street Allentown, PA 18101

    and

    UGI Utilities P.O. Box 12677 100 Kachel Boulevard, Suite 400 Reading, PA 196122677

    P.O. Box 297 Tel.: (860) 537-0751 August 1998 188 Norwich Avenue Fax: (860) 537-6347 Project No. 96437 Colchester, CT 06415

    AR302627

  • GEI Consultants, Inc. ATLANTIC ENVIRONMENTAL DIVISION

    AugUSt 21, 1998 188 Norwich Avenue

    Project 96437-1007 p-°-Box 297 J Colchester, CT 06415

    A* c ^ .A^- I I (860)537-0751Mr. Scott Miller (860) 537.6347 Fax Project Engineer Clean Sites Environmental Services, Inc. 635 Slaters Lane Alexandria, VA 22314

    RE Private Well Analytical Results Former UGI Columbia Gas Plant Columbia, Pennsylvania

    Dear Mr. Miller:

    We have enclosed the validated analytical results of water samples collected at private residences on Safe Harbor Water Power Corporation land near the former UGI Columbia Gas Plant in May 1998. These residences are illustrated and identified in Figure 1. The wells at these residences were originally sampled by Atlantic Environmental Services, Inc. in July 1995.

    Samples collected from the ------- --- - ------ - wells were obtained from faucets on the outside of the residences, after purging the wells and systems of 250 gallons. A Grundfos™ submersible pump was used to purge the wells at the-------- - --- - ------- - cottages. Twelve gallons of water was purged from the ------- - - leaching field "standpipe." (This "standpipe" was initially identified by the residence owner as a groundwater well.) At the ------- - --- - ------- - wells, 100 gallons of water was purged. A new, clean bailer was used to collec ----- - -- ---- - -------- es at the Dregge and Shupp wells when purging was complete. A blind duplicate sample was collected during each separate sampling event (a total of two duplicates). A matrix spike/matrix spike duplicate was also collected.

    Two separate analytical laboratory contractors were used because one of the contractors (Lancaster Laboratories) had an abnormally large backlog of samples and was unable to make commitments for additional samples.

    The samples were analyzed for selected volatile and semivolatile organic and inorganic compounds, using drinking water methodologies. This ensured that detection limits were low enough to compare the results with the United States Environmental Protection Agency (EPA) drinking water Maximum Contaminant Levels (MCL), published by the EPA Office of Water in May 1994. The MCL for the inorganic compound nickel has been remanded from that list since that time.

    The analytical data were validated to ensure that quality control/quality assurance standards were acceptable. In general, the data were unqualified. However, the cyanide results for samples

    Additional Offices Nationwide AR302628

  • Mr. Scott Miller Clean Sites Environmental Services, Inc. August 21, 1998 Page 2

    collected at the-------- - --- - ------- - residences were rejected due to matrix spike recovery outside of the acceptab - ---------

    The organic compound toluene was detected in the water sample collected from the leaching field at the-------- - - residence. The toluene concentration of 8.8 parts per billion (ppb) was nonetheless below the EPA MCL of 1 part per million (ppm). We do not believe the presence of toluene in this sample can be related to the former UGI Columbia Gas Plant, as follows.

    • The-------- - - residence is approximately 1500 feet northwest of the former gas plant.

    • Overburden groundwater flow is to the southwest and discharges to the Susquehanna River (refer to the Remedial Investigation report for the former manufactured gas plant [MGP] dated April 1998).

    • Groundwater in the ------- - - leaching field is overburden groundwater. The nearest other overburden well (MW-02R, close to the borough garage and closer to the former MGP) did not produce samples containing organic compounds in either of two sampling rounds.

    • Based on apparent overburden groundwater flow and analytical results from well MW- 02R, organic compounds from the gas plant site are unlikely to migrate to the location of the ------- - - leaching field.

    • Organic compounds in the leaching field groundwater are more likely to originate from an upgradient location, or from liquids disposed down the dram at the residence.

    No other water samples contained detected concentrations of organic compounds. Some inorganic compounds were detected; however they did not exceed EPA MCLs.

    Please call me if you have any questions.

    Sit

    JZ:jmb Enclosure

    c: Douglas Ammon, Clean Sites Dennis Unites, GEI/Atlantic

    AR302629

  • CLEAN SITES ENVIRONMENTAL SERVICES, INC.

    August 26, 1998

    Mr. Anthony L. Martinelli Project Officer Environmental Cleanup Program Pennsylvania Department of Environmental Protection 615 Howard Avenue Altoona, Pennsylvania 16601

    Subject: Private Well Analytical Results UGI Columbia Gas Plant Site Columbia, Pennsylvania

    Dear Mr. Martinelli:

    Enclosed are the validated analytical results for the private wells that were sampled on the Safe Harbor Water Power Corporation property near the UGI Columbia Gas Plant Site (Site). The samples were collected in May 1998 and the analytical results were independently validated.

    Drinking water methods were used to analyze the samples this time to ensure detection limits low enough so that the results could be compared with Maximum Contaminant Levels (MCLs). Consistent with the results from the previous sampling event conducted in July 1995, organic compounds were not detected in any of the well samples. Toluene was detected; however, in a sample mistakenly collected from a leachfield standpipe (owner originally identified as a well) at a concentration of 8.8 parts per billion (ppb), well below the MCL of 1000 ppb. See the attached letter from GEI for further details regarding this sample. In addition, some inorganics were detected at levels below their respective MCL.

    Should you have any questions regarding this matter, please call me at (717) 684-1619 or Douglas Ammon at (703) 519-2135.

    Very truly yours,

    C

    Scott R. Miller, P.E. Project Manager

    Enclosure

    cc: Douglas C. Ammon, CSES Steven J. Donohue, USEPA J Rondeau, UGI James Villaume, PP&L

    CLEAN SITES ENVIRONMENTAL SERVICES. INC * 635 SLATERS LANE. SUITE I 30 * ALEXANDRIA. VIRGINIA 223 H * TEL: (703) S I 9-2 I 40 * FAX: (703) 5 I 9-2 I 4 I

    A subsidiary of CLEAN SITES. INC QAR302630

  • CLEAN SITES ENVIRONMENTAL SERVICES, INC.

    September 28, 1998

    --- ------ - ---------- - ---- - --------- ----- ----------- --------------- - ------ -

    Subject: Private Well Analytical Results UGI Columbia Gas Plant Site Columbia, Pennsylvania

    Dear Mr.-----------

    Enclosed are the validated analytical results for your well that was sampled in May 1998. As I discussed over the phone with your wife, no organic compounds were detected in your sample. Some inorganic compounds were detected; however, they did not exceed EPA Maximum Contaminant Levels (MCLs). MCLs are defined as the maximum permissible levels of a contaminant in water delivered to the free flowing outlet of the ultimate user of a public water system.

    Should you have any questions regarding these results, please call me at (717) 684-1619 or EPA's project manager, Steve Donohue, at (215) 814-2135.

    truly yours,

    Scott R. Miller, P.E. Project Manager

    Enclosure

    cc: Steven J. Donohue, USEPA J Rondeau, UGI James Villaume, PP&L

    CLEAN SITES ENVIRONMENTAL S E R V I C E S . INC » 635 SLATERS LANE. SUITE I 30 * ALEXANDRIA, VIRGINIA 223 14 A_JEL (7_OJ) 5 I 9 - 2 M O _ » FAX: (703) 5 I 9^

    A subsidiary of CLEAN SITES. INC AR302631

  • CLEAN SITES ENVIRONMENTAL SERVICES. INC.

    September 28, 1998

    --- -------- --------- --- - ------------ ------ - ----------- --------------- - ------- -

    Subject: Private Well Analytical Results UG1 Columbia Gas Plant Site Columbia, Pennsylvania

    Dear Mr. -------- »

    Enclosed are the validated analytical results for your well that was sampled in May 1998. As my message indicated, no organic compounds were detected in your sample. Some inorganic compounds were detected; however, they did not exceed EPA Maximum Contaminant Levels (MCLs). MCLs are defined as the maximum permissible levels of a contaminant in water delivered to the free flowing outlet of the ultimate user of a public water system.

    Should you have any questions regarding these results, please call me at (717) 684-1619 or EPA's project manager, Steve Donohue, at (215) 814-2135.

    Very truly yours,

    Scott R. Miller, P.E. Project Manager

    Enclosure

    cc: Steven J. Donohue, USEPA J Rondeau, UGI James Villaume, PP&L

    CLEAN SITES ENVIRONMENTALJERyiCESJNC » 635 SLATERS LANE. SUITE 130 ' ALEXANDRIA. VIRGINIA 22|M_* TEL: (703) 5 I 9-2 140 "_FAX: (703) 5 I9 -2HI

    A subsidiary of CLEAN SITES, INC OAR302632

  • CLEAN SITES ENVIRONMENTAL SERVICES, INC.

    September 28, 1998

    --- ------ - ------ - --- - ------ - ----- - ------- --------- ----------------- --------- -

    Subject: Private Well Analytical Results UGI Columbia Gas Plant Site Columbia, Pennsylvania