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FINAL SCREENING LEVEL ECOLOGICAL RISK ASSESSMENT EMMELL's SEPTIC LANDFILL SUPERFUND SITE GALLOWAY TOWNSHIP, NEW JERSEY Work Assignment No

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FINAL SCREENING LEVEL ECOLOGICAL RISK ASSESSMENT EMMELL's SEPTIC LANDFILL SUPERFUND SITE GALLOWAY TOWNSHIP, NEW JERSEY Work Assignment No I SDMS Document 103078 FINAL SCREENING LEVEL ECOLOGICAL RISK ASSESSMENT EMMELL'S SEPTIC LANDFILL SUPERFUND SITE GALLOWAY TOWNSHIP, NEW JERSEY Work Assignment No. 135-RICO-02JW May 30, 2007 Prepared for U.S. Environmental Protection Agency 290 BroadAvay ii New York, New York 10007-1866 Prepared by CDM Federal Programs Corporation 125 Maiden Lane, 5* Floor New York, New York 10038 EPA Work Assignment No. 135-RICO-02JW EPA Region 2 Contract No. 68-W-98-210 CDM Federal Programs Corporation Document No. : 3223-135-RA-ECRA-06698 Prepared by : CDM FEDERAL PROGRAMS CORPORATION Site Manager Demetrios Klerides, P.E. Telephone Number (212) 785-9123 EPA Remedial Project Manager Joseph Gowers Telephone Number (212) 637-4413 Date Prepared May 30, 2007 P I 300598 Rantan Plaza I Raritan Center Edison, New Jersey 08818-3142 tel: 732 225-7000 fax: 732 225-6147 May 30, 2007 Mr. Joseph Gowers Remedial Project Manager U.S. Environmental Protection Agency 290 Broadway - 20* Floor . New York, NY 10007-1866 PROJECT: RAC II Contiact No.: 68-W-98-210 Work Assignment No.: 135-RICO-02JW DOC CONTROL NO.: 3223-135-RA-ECRA-06698 SUBJECT: Final Screening Level Ecological Risk Assessment Emmell's Septic Landfill Superfund Site Remedial Investiagation/Feasibility Study Galloway Township, New Jersey Dear Mr. Gowers: ii CDM Federal Programs Corporation (CDM) is pleased to submit seven bound and one lurbound copies of the Final Screening Level Ecological Risk Assessment for the Emmell's Septic Landfill Superfund Site in. Galloway Township, New Jersey, as partial fulfillment of Subtask No. 7.2 of the Statement of Work. If you have any questions regarding this submittal, please contact Demetiios Klerides at or me at (212) 785-9123. Very truly yours, CDM FEDERAL PROGRAMS CORPORATION Jeanne Litwin, REM RAC II Program Manager Enclosure cc: F. Rosado, EPA Region II (Letter Only) D. Butler, EPA Region II (Letter Only) R. Goltz/PSO File, CDM D. Klerides, CDM J. Mayo, CDM N. Luke, CDM f RAC II Document Contiol 300599 I consulting • engineering • construction • operations or r 300600 Contents Section 1 Introduction 1-1 1.1 Objectives 1-1 f 1.2 Report Organization 1-2 Section 2 Problem Formulation 2-1 2.1 Environmental Setting 2-1 2.1.1 Site Location and Description 2-1 2.1.2 Site History 2-1 2.1.3 Site Geology and Hydrogeology 2-2 2.1.4 Habitat and Biota .2-3 2.1.5 Threatened, Endangered Species/Sensitive Environments 2-3 2.2 Nature and Extent of Contamination 2-4 2.2.1 Surface Soil Sampling 2-4 2.2.2 Background 2-5 2.3 Risk Questions 2-5 2.4 Preliminary Conceptual Site Model 2-6 2.4.1 Sources of Contamination 2-6 2.4.2 Exposure Pathways 2-6 2.4.3 Assessment Endpoints 2-7 2.5 Selection of Chemicals of Potential Concern 2-8 Section 3 Exposure Assessment 3-1 3.1 Chemical Properties of COPCs 3-1 » 3.1.1 Bioavailability 3-1 3.1.2 Environmental Persistence 3-2 Section 4 Ecological Effects Assessment 4-1 4.1 Literature-Based Effects Data 4-1 4.2 Evaluation of Site-Specific Data 4-1 Section 5 Risk Characterization 5-1 5.1 Hazard Quotient Approach 5-1 5.2 HQ-based Risk Estimates 5-1 5.3 Evaluation of Site-Specific Data 5-2 5.4 Approach of Evaluations 5-2 5.5 Identification of Chemicals of Potential Concern 5-2 5.5.1 Aluminum 5-6 5.5.1.1 Fate and Transport 5-6 5.5.1.2 Toxicity 5-6 5.5.2 Aroclor 1254 5-7 5.5.2.1 Fate and Transport 5-7 5.5.2.2 Toxicity 5-7 5.5.3 Barium 5-8 5.5.3.1 Fate and Transport 5-8 5.5.3.2 Toxicity 5-8 f CDM Final SLERA I 300601 Table of Contents Final SLERA 5.5.4 Benz;aldehyde 5-8 5.5.4.1 Fate and Transport 5-8 r 5.5.4.2 Toxicity 5-9 5.5.5 Cadmium 5-9 5.5.5.1 Fate and Transport 5-9 5.5.5.2 Toxicity 5-9 5.5.6 Chromium 5-10 5.5.6.1 Fate and Transport 5-10 5.5.6.2 Toxicity 5-10 5.5.7 Cyanide 5-11 5.5.7.1 Fate and Transport 5-11 5.5.7.2 Toxicity 5-11 5.5.8 Iron 5-12 5.5.8.1 Fate and Transport 5-12 5.5.8.2 Toxicity 5-12 5.5.9 Lead 5-13 5.5.9.1 Fate and Transport 5-13 5.5.9.2 Toxicity 5-13 5.5.10 Mercury 5-14 5.5.10.1 Fate and Transport 5-14 5.5.10.2 Toxicity 5-14 5.5.11 Seleruum 5-14 5.5.11.1 Fate and Transport 5-14 5.5.11.2 Toxicity 5-15 5.5.12 Silver 5-15 5.5.12.1 Fate and Transport 5-15 5.5.12.2 Toxicity 5-16 5.5.13 Vanadium 5-16 5.5.13.1 Fate and Transport 5-16 5.5.13.2 Toxicity 5-16 5.5.14 Zinc 5-17 5.5.14.1 Fate and Transport 5-17 5.5.14.2 Toxicity 5-18 5.6 Risk Summary 5-18 Section 6 Uncertainty Assessment 6-1 6.1 Problem Formulation 6-1 6.2 Exposure Assessment 6-2 6.3 Effects Assessment 6-2 6.4 Risk Characterization 6-3 Section 7 Summary and Conclusions 7-1 Section 8 Literature Cited 8-1 f CDM I Final SLERA 300 602 Table of Contents Final SLERA List of Tables 2-1 Dominant Vegetation List f 2-2 Observed Wildlife Species 2-3 Summary of Surface Soil Samples Collected 2-4 Summary of Soil Screening Results 4-1 Contaminants of Potential Concern in Surface Soil List of Figures 1-1 Site Location Map 2-1 Site Boundary and Surrounding Habitats 2-2 Location of Bald Eagle Foraging Habitat 2-3 Surface Soil Sampling Locations 2-4 Aroclor 1254 Detections in Surface Soil Samples 2-5 Preliminary Site Conceptual Exposure Model (SCEM) Appendices Appendix A Letters from tlie United States Fish and Wildlife Service (USFWS) and tJie Neiv Jersey Department of Environmental Protection (NJDEP) Appendix B Analytical Results H Appendix C Data Quality Assessment Report p CDM I Final SLERA 300603 Table of Contents Final SLERA f Acronyms amsl above mean sea level ACHD Atlantic County Health Department BERA baseline ecological risk assessment bgs below ground surface CCE Churchill Consulting Engineers CDM CDM Federal Programs Corporation CEC cation exchange capacity COPC chemical of potential concern CSM conceptual site model DDT dichlorodiphenyl tiichloroethane EC exposure concentiation EcoSSL Ecological Soil Screening Level EPA Environmental Protection Agency ERAGS Ecological Risk Assessment Guidance for Superfund ERT Environmental Response Team ESL ecological screening level FS feasibiUty study HI hazard index HQ hazard quotient kg kilogram » km kilometer MCL maximum contaminant level mg milligram mg/kg milligrams per kilogram mg/L milligrams per liter NJ New Jersey NJDEP New Jersey Department of Environmental Protection NJGQS New Jersey Groundwater Quality Standards NOAEL no-observed-adverse-effect level NPL National Priorities List PCB polychlorinated biphenyl PRG preliminary remediation goal QAPP quality assurance project plan RAB Removal Action Branch RAC Response Action Contiact RAGS Risk Assessment Guidance for Superfund RCRA Resource Conservation and Recovery Act RI remedial investigation RTECS Registiy of Toxic Effects of Chemical Substances SLERA screening level ecological risk assessment SMDP Scientific Management Decision Point SVOC semi-volatile organic compound TAL target analyte list P TCL target compound list CDM I Final SLERA 300604 IV Table of Contents Final SLERA TCLP toxicity characteristic leaching procedure TOC total organic carbon r USFWS United States Fish and Wildlife Service USGS United States Geological Survey VOC volatile organic compound h f CDM I Final SLERA 3 00605 n % o 9 300606 I Section 1 !» Introduction CDM Federal Programs Corporation (CDM) received Work Assignment Number 135- RICO-02JW under the Option Period Response Action Contiact (RAC) II program to perform a Remedial Investigation/Feasibility Study (RI/FS) for the Emmell's Septic Landfill Superfund Site (the site) located in Galloway Township, Atlantic County, New Jersey (NJ). The overall purpose of the work assignment is to investigate the nature and extent of contamination at the site and,to develop and evaluate remedial alternatives, as appropriate. This screening level ecological risk assessment (SLERA) evaluates the ecological risks at the Emmell's Septic Landfill site. The site is located in a rural area of Galloway Township, NJ (Figure 1-1). It was historically used for the disposal of septic waste and sewage sludge. Other wastes including chemical waste, drums of paint sludge, gas cylinders, household garbage, and constiuction debris, were also reportedly disposed of at the site. The site was proposed for inclusion on the National Priority List (NPL) in April 1999, and was placed on the NPL on July 22,1999. The United State Environmental Protection Agency (EPA) is the lead agency for the site and has primary responsibility for conducting remedial actions there. 1.1 Objectives The objective of this SLERA is to evaluate the potential ecological impact of contaminants at the site. Conservative assumptions were used to identify exposure pathways and, where possible, quantify potential ecological risks. This report.was prepared in accordance with the following documents: • EPA's Ecological Risk Assessment Guidance for Superfund: Process for Designing and Conducting Ecological Risk Assessments, Interim Final (ERAGS) (EPA 1997) • EPA's Guidelines for Ecological Risk Assessment (EPA 1998) The SLERA consists of Steps 1 and 2 of the eight step process presented in the EPA Guidance (EPA 1997).
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