KIN-BUC LANDFILL v S OPERABLE UNIT 2 v;U^>vx DRAFT FINAL FEASIBILITY STUDY REPORT * VOLUME II - APPENDICES A THROUGH D -^ Prepared For KIN-BUC, INC. AND SCA SERVICES, INC. Edison Township, Middlesex County, New Jersey Draft March 1992 • Revised Draft June 1992 ) Draft Final July 1992 WEHRAN ENGINEERING CORPORATION > Middletown, New York .1 Environmental Engineers • Scientists • Constructors i :r - . - .-^. .,,•. -. -. .. •-.•-•1. KIN-BUC LANDFILL OPERABLE UNIT 2 DRAFT FINAL FEASIBILITY STUDY REPORT VOLUME II - APPENDICES A THROUGH D Prepared for KIN-BUC, INC. AND SCA SERVICES INC. Edison Township, Middlesex County, New Jersey Prepared by WEHRAN ENGINEERING CORPORATION 666 East Main Street Middletown, New York 10940 WE Project No. 09406 F9 5 o Draft March 1992 ° Revised Draft June 1992 i-» Draft Final July 1992 of TABLE OF CONTENTS VOLUME I! - APPENDICES A - D Appendix A - USEPA Correspondence and Reports Appendix B - Calculation of Marsh Ground Pressures Appendix C - Description and Cost Estimate for Groundwater Monitoring Program Appendix D - Raritan River Data and Monitoring Program Cost Estimate VOLUME III - APPENDICES E - H Appendix E - Two-Dimensional Groundwater Flow and Solute Transport Model Appendix F - Sediment Recovery Model Appendix G - Cost Estimates For Detailed Analyses Appendix H - Criteria For the FS Cost Estimates for Sediment Removal, Disposal and Related Components CD O o O fO APPENDIX A USEPA CORRESPONDENCE AND REPORTS CD O o O N) SI C71 RECEIVED DEC 2 6 1991 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION II •F' 20 '99J JACOB K. JAVITS FEDERAL BUILDING NEW YORK. NEW YORK 1O278 Kevin Burger, C.E.P. Wehran Engineering Corporation Andover Research Park Six Riverside Drive, Suite 101 Andover, Massachusetts 01810-1121 Re: Operable Unit 2 Feasibility Study, Kin Buc Landfl Superfund Site, Edison New Jersey. Administrative Order No. ll-CERCLA-001 14 (Order). Dear Mr. Burger: The U. S. Environmental Protection Agency (EPA) has determined appropriate remediation goals for the wetlands sediments to be addressed in the selected remedy for Operable Unit 2 of the Kin Buc Landfill Superfund Site, Edison, New Jersey. On the basis of the Remedial Investigation report and its supplements, as well as the draft Risk Assessment prepared by EPA, EPA has identified PCBs as the primary contaminant of concern in the wetlands, and has developed a cleanup level of 5.0 parts per million (ppm) for all contaminated wetlands sediment in Operable Unit 2. This area includes the Edmonds Creek and Connecting Channel. This goal reflects several different contributing factors: EPA's preliminary calculations based on an evaluation of btoavailability using the Interim Equilibrium Partitioning (EP) Method, biological effects data from literature studies, as well as remediation goals for PCBs in sediments at other Superfund sites. These factors were considered against such competing factors as the technical feasibility of full remediation and the desire to minimize, as much as possible, the impact of remediation on the existing wetlands. EPA believes that the remediation goal will greatly reduce the ecological threats associated with the contaminated sediment while preserving a significant portion of the existing ecosystem. Sediments contaminated by PCBs at lower levels (<5 ppm) will remain undisturbed. The Interim EP Method has been developed by EPA as a means of evaluating sediment quality, and applies to nonpolar organics and inorganic contaminants. The sediment quality criteria (SOC) developed with this method are based on the partitioning of contaminants between the sediment and the water in contact with that sediment. For a particular contaminant, the Interim EP method may be utilized to back-calculate from the Ambient Water Quality Criteria (AWOC) the concentration of that contaminant in the sediment which will have no adverse effects on organisms exposed to the sediment-water interface. For each contaminant, the method provides PRINTED ON RECYCLED PAPER a range of SQCs based on the range of partitioning coefficients reported in literature. The lower value represents the concentration, normalized to the organic carbon content, with which 97.5% certainty will protect organisms from adverse chronic effects, while the upper value represents the normalized concentration with which 97.5% certainty will not protect organisms from adverse chronic effects. For PCBs, the tower, mean, and upper SQCs are 3.87, 19.5, and 99.9 ug PCB/g carbon. The attached document describes the basis and application of this method to sediment qualify data As part of the Feasibility Study, Wehran should apply the Interim Equilibrium Partitioning Method to all wetlands sediment data points for which both PCS and Total Organic Carbon (TOC) concentrations are available. All PCB data should be normalized to the fraction of organic carbon contained in the sediment at that data point The normalized data should be mapped, with contour intervals representing the lower, upper and mean sediment quality criteria as described. This information will assist EPA in confirming the preliminary calculations which led to the establishment of the 5 ppm cleanup goal, should be submitted to EPA within 18 working days from receipt of this letter. Because the Risk Assessment has not been finalized, EPA wil transmit a summary of those portions it considers necessary for Wehran to complete the draft Feasibility Study as soon as possible. These portions include the human health and ecological pathways considered, the contaminants of concern, and the results of the quantitative risk assessment At that time, a schedule for the Feasibility Study win be established. Until that time, Wehran should begin the revision of the October 1990 Feasibility Study submtttals (Chapters 1.0, 2.0, 3.0, 4.0) based on the draft Final Remedial Investigation Report and the contents of this letter. If you have any questions or comments concerning these matters, please contact Alison Barry, of my staff, at (212) 264-8678. Sincerely yours, Raymond Basso, Chief New Jersey Superfund Branch II Attachments cc: Ralph Sundstrom, Kin Buc (w/o attachment) o Richard Karr, Waste Management NA (w/o attachment) lan Curtis, NJDEPE o Robert Miller, Wehran " Jeanne Litwin, COM FPC *>• INTERIM SEDIMENT CRITERIA VALUES FOR NONPOLAR HYDROPHOBIC ORGANIC COMPOUNDS INTRODUCTION Toxic contaminants in the bottom sediments of lakes, rivers and coastal waters can degrade the environment. Available data Indicate many locations where existing sediment contaminant concentrations are now causing significant adverse environmental effects on aquatic life, even when water column contaminant concentrations comply with established water quality criteria (Malins et al. 1980, 1982). Since 1985, the Criteria and Standards Division of EPA has been pursuing the Equilibrium Partitioning (EP) approach for estimating sediment quality criteria for nonpolar and metal contaminants. .In anticipation of favorable review of the approach by EPA's Science Advisory Board, interim sediment criteria values based on the EP approach for selected nonpolar, hydrophobic organic compounds were developed. These interim criteria values can be used to evaluate the appropriate applications of. sediment criteria in existing regulatory programs. This report describes how the interim numbers were developed and briefly how the criteria values can be used to evaluate the extent of sediment contamination. Preparation of this report has resulted in a great deal of discussion regarding choice of partition coefficients and _,. DO methods for determining the uncertainty in the interim criteria values. ° Therefore, It 1s very likely that the final values that EPA will recommend § will differ from these values although not substantially. Any user of these numbers should be aware that these numbers are indeed interim and not final SgI criteria values. The main part of this report describes the development of interim criteria values for nonpolar organic contaminants for which chronic water quality 1 criteria have been generated. In Appendix E of the report, additional interim criteria for selected PAHs are given. EQUILIBRIUM PARTITIONING APPROACH Before describing how the interim criteria were estimated, the technical approach that forms the basis for the sediment criteria development effort will be discussed. The approach that is being pursued by the Criteria and Standards Division for establishing sediment quality criteria, on the recommendation of participants in the technical workshops and steering committees, is the EP approach (Neff 1985, Cowan 1986, Cowan 1987). The EP approach is based on two interrelated assumptions. First, that the interstitial water concentration of the contaminant is controlled by partitioning between the sediment and the water at contaminant concentrations well below saturation in both phases. Thus, the partitioning can be calculated from the quantity of the sorbent(s) on the sediment and the appropriate sorption coefficient(s). For nonpolar organic contaminants, the primary sorbent is the organic carbon on the sediment; therefore, the partition coefficient is called the organic carbon normalized partition coefficient, KQC. Second, the toxicity and accumulation of the contaminant by benthic organisms is correlated to the interstitial, or port water concentration and not directly to the total concentration of the contaminant on the sediment. When the EP approach is used to estimate sediment quality criteria, chronic water quality criteria (WQC) are used