REMEDIAL ACTION PLAN (RAP) for the DREDGING of 2080806 IMPACTED SEDIMENTS SDMS Docid at the FORMER UGI COLOMBIA GAS PLANT SITE Columbia, Pennsylvania
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REMEDIAL ACTION PLAN (RAP) for THE DREDGING OF 2080806 IMPACTED SEDIMENTS SDMS DocID at the FORMER UGI COLOMBIA GAS PLANT SITE Columbia, Pennsylvania Submitted To: Clean Sites Environmental Services, Inc. 635 Slaters Lane, Suite 130 Alexandria, Virginia 22314 Submitted By: OHM Remediation Services Corp. Northern Region 200 Horizon Center Boulevard Trenton, New Jersey 08691 DECEMBER 1997 OHM Remediation Services Corp. OHM Project 2024 d:\graphics\732412\ohmcv.ds AR400721 PARSONS ENGINEERING SCIENCE, iNC. 290 Elwood Davis Road, Suite 312- Liverpool, New York 13088 • (315) 451-9560 • Fax (315)451-9570 December 12, 1997 Clean Sites Environmental Services, Inc. Attn: Mr. Scott Miller Former UGI MGP Site Columbia, Pennsylvania 17512 RE: Former UGI Columbia Gas Plant Site Final Sediment Removal Remedial Action Plan (RAP) Dear Mr. Miller: Forwarded is one copy of the revised Final Sediment Removal Remedial Action Plan (RAP) for the Former UGI Columbia Gas Plant Site in Columbia, Pennsylvania. Revisions have been made in accordance with the November 19, 1997 meeting minutes and subsequent comments. Copies have also been forwarded to Steve Donohue of EPA (1), Tony Martinelli of PADEP(2) and Jim Villaume of PP&L (1). Should you have any questions please feel free to call me at (315) 451-9560 or Mr. Michael Evanko of OHM at (609) 588-6382. Sincerely, PARSONS ENGINEERING SCIENCE, INC. William J. Long Project Manager CF: S. Donohue, EPA A. Martinelli, PADEP J. Villaume, PP&L M. Evanko, OHM -WJSERSV10030\PPLSED\FinalWP\PPLLtrF2.DOC 12/12/97 PARSONS AR400722 fjSi»*il .i "-'•-) OHM Remediation Services Corp. A Subsidiary of OHM Corporation OPERA TIONS PLAN FOR THE DREDGING OF IMPACTED SEDIMENTS AT THE FORMER UGI COLUMBIA GAS PLANT SITE COLUMBIA, PENNSYLVANIA Submitted to: Clean Sites Environmental Services, Inc. 635 Slaters Lane, Suite 130 Alexandria, Virginia 22314 Submitted by: OHM Remediation Services Corp. Northern Region 200 Horizon Center Boulevard Trenton, New Jersey 08691 -1904 Michael Evanko Project Manager December 3, 1997 OHM Project 20240 AR400723 TABLE OF CONTENTS 1.0 INTRODUCTION 1-1 1.1 SCOPE OF WORK 1-1 1.2 SITE LOCATION/DESCRIPTION 1-2 1.3 SITE HISTORY 1-2 1.4 PREVIOUS INVESTIGATIONS 1-2 1.5 STATE AND LOCAL AUTHORITIES'ROLE 1-3 2.0 PROJECT ORGANIZATION 2-1 2.1 MANPOWER REQUIREMENTS 2-1 2.2 MANAGERIAL APPROACH TO CONSTRUCTION 2-1 2.3 PERSONNEL-DUTIES AND RESPONSIBILITIES 2-1 3.0 PRE-CONSTRUCTION ACTIVITIES 3-1 3.1 PERMITTING 3-1 3.2 PRE-CONSTRUCTION SUBMITTALS 3-1 3.3 PRE-CONSTRUCTION MEETINGS 3-1 4.0 MOBILIZATION AND SITE SETUP 4-1 4.1 SITE MOBILIZATION 4-1 4.2 SITE SETUP 4-1 5.0 DREDGE AREA WATER CONTAINMENT 5-1 6.0 DREDGING 6-1 7.0 AIR MONITORING 7-1 8.0 SAMPLING 8-1 8.1 CONFIRMATORY SEDIMENT SAMPLING 8-1 8.2 TREATED WATER SAMPLING 8-2 8.3 RIVER LEVEL MONITORING 8-2 9.0 TRANSPORTATION AND DISPOSAL 9-1 10.0 SHEETPILING/CUTOFF WALL INSTALLATION 10-1 11.0 BACKFILLING/PORTADAM REMOVAL 11-1 12.0 GEOTEXTILE AND RIPRAP INSTALLATION 12-1 OHM Project 20240 Columbia Gas-Columbia, PA December 3, 1997 Information herein is proprietary and confidential and to be used or released to others only with explicit written permission of OHM Remediation Services Corp. AR400724 TABLE OF CONTENTS (CONTINUATION) 13.0 DEMOBILIZATION 13-1 14.0 CLOSURE REPORT 14-1 APPENDICES APPENDIX A Personnel Resumes APPENDIX B Borough of Columbia Access Agreement APPENDIX C Treatability Study APPENDIX D Health and Safety Plan APPENDIX E Verification Sampling and Analysis Plan APPENDIX F Quality Assurance / Quality Control Plan APPENDIX G Contingency Plan APPENDIX H R3 Technologies Audit APPENDIX I Water Treatment System Standard Operating Procedures APPENDIX J Sheetpiling Specifications FIGURES FIGURE 1-1 Site Location Map FIGURE 1-2 Area Map FIGURE 1-3 Areal Extent of Coal Tar Impacted Sediments "Low End" FIGURE 2-1 Project Organization FIGURE 3-1 Schedule of Project Activities FIGURE 4-1 Details FIGURE 5-1 Portadam System FIGURE 6-1 Water Treatment System Detail FIGURE 6-2 Sediment Removal Plan FIGURE 6-3 Sediment Removal Section FIGURE 6-4 Atlantic Environmental Services Figure E-1 FIGURE 8-1 Confirmatory Sample Location Plan OHM Project 20240 Columbia Gas-Columbia, PA December 3, 1997 Information herein is proprietary and confidential and to be used or released to others only with explicit written permission of OHM Remediation Services Corp. ii AR400725 1.0 INTRODUCTION OHM Remediation Services Corp. (OHM), in conjunction with Parsons Engineering Science, Inc. (Parsons ES), were retained by Clean Sites Environmental Services, Inc. (CSES) on behalf of Pennsylvania Power & Light (PP&L) Company to provide remediation services at the Former UGI Columbia Gas Plant Site in Columbia, Pennsylvania. Subsequent reference to OHM and Parsons ES will be made as the "OHM Team" throughout the remainder of the text. 1.1 SCOPE OF WORK The OHM Team was contracted to perform the dredging of approximately 496 cubic yards of coal-tar impacted sediments from the Susquehanna River, stabilize the river bank with geotextile and riprap material, and install a sheetpile cutoff wall along the shoreline of the Former UGI Columbia Gas Plant Site in Columbia, Pennsylvania. The scope of work for the scheduled site remediation activities includes the following: • Prepare the necessary permit applications required by the Pennsylvania Department of Environmental Protection (PADEP), United States Environmental Protection Agency (USEPA), and the Army Corps of Engineers (ACE). • Prepare a Remedial Action Plan (RAP) for the project. The RAP includes an Operations Plan, Health and Safety Plan, Verification Sampling and Analysis Plan, Quality Assurance / Quality Control Plan and a Contingency Plan. The RAP includes all drawings necessary to perform the sediment removal. All specifications are included on the drawings. • Mobilization to the site from the OHM Team Windsor, New Jersey shop location. • Site setup activities which will include a survey of existing conditions in the dredge area, clearing and grubbing of the work area, office trailer setup, decontamination area setup, access road construction, and the installation of two 12,000-galIon containment pools (one influent or settling tank and one effluent or filtrate tank). • Portable dam installation around the dredging limits and dewatering of the contaminated area. • Dredging of impacted sediments from within the contaminated area, stockpiling of excavated sediments, and gravity dewatering of the excavated sediments. • Water treatment and discharge. • Air monitoring and post-excavation soil sampling. OHM Project 20240 Columbia Gas-Columbia, PA December 3, 1997 Information herein is proprietary and confidential and to be used or released to others only with explicit written permission of OHM Remediation Services Corp. 1-1 AR400726 ^lib. OHM Remediation INTRODUCTION • Transportation and disposal of impacted sediments. • Sheetpile cutoff wall installation • Backfilling of dredge area and the placement of geotextile and riprap. • Demobilization of all equipment, materials, and personnel. 1.2 SITE LOCATION/DESCRIPTION Site Location The Former UGI Columbia Gas Plant Site is located at 441 South Front Street in the Borough of Columbia, Lancaster County, Pennsylvania and currently owned by PP&L. The property is approximately 1.6 acres in size and is enclosed by chain-link fencing. A Site Location Map is included as Figure 1-1. Work Area Description The work area scheduled for the remediation activities consists of an approximately 35,000 square foot area extending along the river bank of the site and into the Susquehanna River. Figure 1-2 has been included depicting the limits of the work area. Referring to Figure 1-2, the work area is situated approximately 300 feet west of the Municipal Authority of Columbia Wastewater Treatment Plant and approximately 300 feet south of the Columbia Borough Municipal Garage. 1.3 SITE HISTORY The site was historically utilized as a gas manufacturing facility from approximately 1851 to 1948. The site was first utilized as a gas manufacturing facility in 1851, wherein gas was generated by the wood carbonization process. By 1886, the Lowe Process of water gas production had replaced the wood gas process. The property was owned and operated by Columbia Gas until 1935, when the property was transferred to PP&L. In 1949, the property was transferred to the Lancaster County Gas Company, which later merged with UGI Corporation (UGI). In 1976, a portion of the property was purchased by Thomas Grouse from UGI. In October 1979, George Roach purchased two-thirds of the property from UGI and began operating a boat dealership. In 1992, the property was inherited by George Roach's daughter and on January 27, 1994 re-purchased by PP&L. The site was placed on the National Priorities List in 1994. 1.4 PREVIOUS INVESTIGATIONS From 1985-1986, PP&L sponsored several site investigations and several remedial measures were instituted onsite, including the capping of two former holding pits. In 1985, PP&L and UGI contracted TRC Environmental Consultants, Inc. (TRC) to perform a site investigation. In the "Final Report of Investigations" (TRC, 1986), TRC reported that a former gas plant employee stated that overflows from the tar/water separator at the gas plant were directed offsite to the Susquehanna River, in a shallow open trench. Sediment samples collected immediately downgradient of the former manufacturing gas plant indicated elevated levels of coal-tar constituents in a limited portion of the Susquehanna River and adjacent riverbank of the site. Additional sediment and soil sampling was performed to delineate the areal extent of coal-tar contamination as required by PADEP. The areal extent of coal-tar impacted OHM Project 20240 Columbia Gas-Columbia, PA Decembers, 1997 Information herein is proprietary and confidential and to be used or released to others only with explicit written permission of OHM Remediation Services Corp.