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DOWNLOAD Final Preliminary Assessment Report FINAL PRELIMINARY ASSESSMENT REPORT FOR THE NORWOOD LANDFILL NORWOOD, DELAWARE COUNTY, PENNSYLVANIA Prepared for: U.S. Environmental Protection Agency Region III Hazardous Site Cleanup Division 1650 Arch Street Philadelphia, PA 19103 Prepared by: Region III Superfund Technical Assessment and Response Team IV Weston Solutions, Inc. 1400 Weston Way West Chester, PA 19380 EPA Contract No.: EP-S3-15-02 Technical Directive Document No.: W503-17-03-001 Document Control No.: W0146.1A.02089 July 2017 (b) (4) (b) (4) (b) (4) (b) (4) Norwood Landfill Final Preliminary Assessment Report TABLE OF CONTENTS Section Page 1.0 INTRODUCTION..............................................................................................................1 2.0 SITE BACKGROUND ......................................................................................................1 2.1 LOCATION AND DESCRIPTION ........................................................................1 2.2 SITE OWNERSHIP .................................................................................................2 2.3 PREVIOUS INVESTIGATIONS ............................................................................2 3.0 SOURCE DESCRIPTION AND CHARACTERISTICS...............................................5 4.0 GROUNDWATER MIGRATION PATHWAY .............................................................5 4.1 REGIONAL AND SITE GEOLOGY ......................................................................5 4.2 REGIONAL AND SITE HYDROGEOLOGY .......................................................6 4.3 GROUNDWATER TARGETS ...............................................................................6 4.4 GROUNDWATER CONCLUSIONS .....................................................................7 5.0 SURFACE WATER MIGRATION PATHWAY ...........................................................8 5.1 HYDROLOGIC SETTING .....................................................................................8 5.2 SURFACE WATER TARGETS .............................................................................9 5.3 SURFACE WATER CONCLUSIONS ...................................................................9 6.0 SOIL EXPOSURE AND AIR MIGRATION PATHWAYS ........................................11 6.1 PHYSICAL CONDITIONS...................................................................................11 6.2 SOIL AND AIR TARGETS ..................................................................................11 6.3 SOIL EXPOSURE AND AIR MIGRATION PATHWAY CONCLUSIONS....................................................................................................13 7.0 SUMMARY AND CONCLUSIONS ..............................................................................13 8.0 REFERENCES .................................................................................................................16 July 2017 Page i TDD NO. WS05-17-03-001 DOCUMENT CONTROL NO. W0146.1A.02089 Norwood Landfill Final Preliminary Assessment Report LIST OF TABLES Title Page TABLE 1 DRINKING WATER WELLS WITHIN A 4-MILE RADIUS OF THE SITE .....7 TABLE 2 ESTIMATED POPULATION WITHIN A 4-MILE RADIUS OF THE SITE ....12 TABLE 3 WETLAND ACREAGE WITHIN A 4-MILE RADIUS OF THE SITE .............13 LIST OF APPENDICES APPENDIX A FIGURES Figure 1 Site Location Map Figure 2 Site Layout Map Figure 3 4-Mile Radius Map with Distance Rings Figure 4 15-Mile Downstream Surface Water Pathway Map APPENDIX B TABLES Table 1 1999 USFWS Analytical Data – Surface Water Samples Table 2 1999 USFWS Analytical Data – Sediment Samples July 2017 Page ii TDD NO. WS05-17-03-001 DOCUMENT CONTROL NO. W0146.1A.02089 Norwood Landfill Final Preliminary Assessment Report LIST OF ACRONYMS AND ABBREVIATIONS µg/kg micrograms per kilogram µg/L micrograms per liter 4,4-DDD 4,4-dichlorodiphenyldichloroethane 4,4-DDE 4,4-dichlorodiphenyldichloroethylene 4,4-DDT 4,4-dichlorodiphenyltrichloroethane Aqua Pennsylvania Aqua Pennsylvania Water Company BTAG Biological Technical Assistance Group CERCLA Comprehensive Environmental Response, Compensation, and Liability Act of 1980 EPA U.S. Environmental Protection Agency mg/kg milligrams per kilogram PA preliminary assessment PaGWIS Pennsylvania Groundwater Information System PAH polycyclic aromatic hydrocarbon PCB polychlorinated biphenyl RBC Risk-Based Concentration Ref. Reference START Superfund Technical Assessment and Response Team SVOC semivolatile organic compound TAL Target Analyte List TCL Target Compound List TDD Technical Directive Document TDL target distance limit USFWS U.S. Fish and Wildlife Service VOC volatile organic compound WESTON® Weston Solutions, Inc. July 2017 Page iii TDD NO. WS05-17-03-001 DOCUMENT CONTROL NO. W0146.1A.02089 Norwood Landfill Final Preliminary Assessment Report 1.0 INTRODUCTION Under the Superfund Technical Assessment and Response Team (START) IV Contract No. EP-S3-15-02, Technical Directive Document (TDD) No. W503-17-03-001, the U.S. Environmental Protection Agency (EPA) Region III tasked Weston Solutions, Inc. (WESTON®) to conduct a Preliminary Assessment (PA) at the Norwood Landfill (Site) located in Norwood, Delaware County, Pennsylvania. The Site PA was conducted in accordance with EPA Guidance for Performing Preliminary Assessments Under CERCLA (Reference [Ref.] 1). The purpose of this PA was to conduct an initial site assessment to determine the need for additional action under the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA). The scope of the Site PA included a review of available site information, a compilation and evaluation of potential targets, a site reconnaissance, and an evaluation of reconnaissance information. Samples were not collected as part of the Site PA. 2.0 SITE BACKGROUND This section presents a description of the Site and its location, provides a discussion of the Site’s ownership and history, and presents a summary of previous site investigation activities. 2.1 LOCATION AND DESCRIPTION The Site consists of an urban residential neighborhood in lower Norwood, Delaware County, Pennsylvania. The geographic coordinates of the approximate center of the Site are 39°52'55.76" north latitude and 75°17'29.04" west longitude (Ref. 2). Land use at the Site and the surrounding area consists of residential areas. Amosland Park borders the Site to the northeast, wooded areas and Muckinipattis Creek are located to the east, wooded areas and Darby Creek are located to the south, Norwood Elementary School is located to the northwest, and additional residential areas are located north and west of the Site (Figures 1 and 2, Appendix A). July 2017 Page 1 TDD NO. WS05-17-03-001 DOCUMENT CONTROL NO. W0146.1A.02089 Norwood Landfill Final Preliminary Assessment Report 2.2 SITE OWNERSHIP The Site consists of a residential area located in a lower Norwood neighborhood and the surrounding property between E. Winona Avenue and Darby Creek. Various individuals own the properties in the residential area. According to the Delaware County Real Estate Parcels and Tax Records System, the folio number for the property surrounding the lower Norwood neighborhood is 310000600903 and the current owner is the Norwood Borough Authority (Ref. 3). No previous owners are listed for this property. 2.3 PREVIOUS INVESTIGATIONS In 1993, the U.S. Fish and Wildlife Service (USFWS) conducted a Level I Contamination Survey of two tracts of land, Tract 24 and Tract 35, which are located near the Site. Tract 35 appears to be part of folio 310000600903, which is part of the undeveloped portion of the Site (Figure 2, Appendix A). The Level I Contamination Survey noted that the Borough of Norwood historically had used Tract 35 as municipal landfill and that debris was scattered across the property at the time of the survey. Observed debris included glass jars and bottles, automobile frames and parts, aluminum siding, asphalt, concrete, and tires (Ref. 4). In 1999, Program Management Company conducted a Level II Survey of Tracts 24 and 35 for USFWS, during which test pits were excavated and samples of soil (21 shallow and 17 deep), sediment (7), surface water (6), and groundwater (10) were collected. The samples were analyzed for Target Compound List (TCL) volatile organic compounds (VOCs), TCL semivolatile organic compounds (SVOCs), TCL pesticides, polychlorinated biphenyls (PCBs), chlorinated herbicides, Target Analyte List (TAL) metals (total and dissolved for groundwater samples), and cyanide. Analytical results were compared to EPA Region III Risk-Based Concentrations (RBCs) residential and industrial soil screening levels for surface soils and sediment samples and EPA RBCs for tapwater for the surface water and groundwater samples, where applicable (Ref. 4). Additionally, for this preliminary assessment, the surface water data and sediment data were compared to EPA Biological Technical Assistance Group (BTAG) Screening Values for freshwater and are discussed in Section 5.3 of this report (Ref. 20). July 2017 Page 2 TDD NO. WS05-17-03-001 DOCUMENT CONTROL NO. W0146.1A.02089 Norwood Landfill Final Preliminary Assessment Report VOCs were not detected in any of the soil samples above RBCs. Eleven of the 21 shallow soil samples contained benzo(a)pyrene concentrations above the residential RBC of 87 micrograms per kilogram (µg/kg), with results ranging from 160 µg/kg to 2,100 µg/kg, and 8 of the 17 deep samples contained concentrations above the residential RBC, with results ranging from 150 to 3,000 µg/kg. PCBs were detected in four shallow and two deep
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