Adams County Quincy Municipal Landfills #2 & #3 Superfund Site
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Third Five-Year Review Report us EPA RECORDS CENTER REGION 5 for the 449688 Adams County Quincy Municipal Landfills #2 & #3 Superfund Site Quincy, Adams County, Illinois Prepared By: United States Environmental Protection Agency Region 5 Chicago, Illinois Approved by: Date: ""H^^^riTV. (^ 6/^ j TOiS Richard C. Karl, Director Superfund Division U.S. EPA Region 5 Cover Photograph: Landfill cap, with groundwater monitoring well in the background, at the Adams County Quincy Municipal Landfills #2 & #3 Superfund site. (Photograph by Howard Caine, June 13, 2012) Five-Year Review Report Table of Contents List of Acronyms I Executive Summary ill Five Year Review Summary Form v \. Introduction 1 II. Site Chronology 2 III. Background 2 Physical Characteristics 2 Land and Resource Use 3 History of Contamination 4 Initial Response 4 Basis for Taking Action 4 IV. Remedial Actions 7 Remedy Selection 7 Remedy Implementation 8 Institutional Controls ; 11 System Operations/Operation and Maintenance (O&M) 13 V. Progress Since the Last Five-Year Review 14 VI. Five-Year Review Process 17 Administrative Components 17 Community Notification and Involvement 18 Document Review 18 Data Review 18 Site Inspection 20 Interviews 21 VII. Technical Assessment 21 Question A: Is the remedy functioning as intended by the decision documents? 21 Question B: Are the exposure assumptions, toxicity data, cleanup levels, and remedial action objectives (RAOs) used at the time of the remedy still valid? 21 Question C: Has any other information come to light that could call into question the protectiveness of the remedies? 22 Technical Assessment Summary: 22 VIII. Issues : 22 IX. Recommendations and Follow-Up Actions 23 X. Statement of Protectiveness 23 XI. Next Review 24 Tables Table 1 - Chronology of Site Events Table 2 - Hazardous Substances Released at the Site Table 3 - Cancer Risk Level and Hazard Index Results Table 4 - Institutional Controls Summary Table Table 5 - Operation and Maintenance Costs Table 6 - Operation and Maintenance Schedule Table 7 - Actions Taken Since the Last Five-Year Review Table 8 - Summary of Leachate Concentration Compared to the Surface Water Criteria Table 9 - Other Recommendations Attachments Attachment A - Site Map Attachment B - Five Year Review Correspondence Attachment C - Five Year Review Inspection Report Attachment D - Public Notice of Five Year Review Attachment E - Leachate Permits Attachment F - Monthly Leachate Volumes Attachment G - Environmental Covenant April 1, 2011: Uniform Environmental Covenant Act Documents Reviewed Record of Decision - 1993 Consent Order-1996 Explanation of Significant Differences - 1998 Five Year Review - 2008 Site Data-2007 to 2012 LIST OF ACRONYMS AOC Administrative Order on Consent ARARs Applicable or Relevant and Appropriate Requirements BOD Biological Oxygen Demand CERCLA Comprehensive Enviroimiental Response, Compensation, and Liability Act CFR Code of Federal Regulations COD Chemical Oxygen Demand DMF Design Maximum Flow ESD Explanation of Significant Differences FIT Field Investigative Team FFS Focused Feasibility Study lAC Illinois Administrative Code ICs Institutional Controls Illinois EPA Illinois Environmental Protection Agency GCL Geosynthetic Clay Liner MCL Maximum Contaminant Level NCP National Contingency Plan NPDES National Pollution Discharge Elimination System NPL National Priorities List O&M Operation and Maintenance QAPP Quality Assurance Project Plan QA/QC Quality Assurance/Quality Control PCBs Polychlorinated Biphenyls POOR Preliminary Close Out Report PM Project Manager POTW Publically Owned Treatment Works PRPs Potentially Responsible Parties RAOs Remedial Action Objectives RD/RA Remedial Design/Remedial Action RI/FS Remedial Investigation/Feasibility Study ROD Record of Decision RPM Remedial Project Manager STP Sewage Treatment Plant SDWA Safe Drinking Water Act SWRAU Site-Wide Ready for Anticipated Use TSS Total Suspended Solids WPCP Water Pollution Control Permit UUAJE Unlimited Use or Unrestricted Exposure U.S. EPA United States Environmental Protection Agency VOC Volatile Organic Compound [This page intentionally left blank.] 11 Executive Summary The Adams County Quincy Municipal Landfills #2 & #3 (Adams County Landfill) Superfund site is located in Quincy, Adams County, Illinois. Drinking water wells at two homes adjacent to the site were found to be contaminated with volatile organic compound (VOC) contamination exceeding Maximum Contaminant Levels (MCLs) under the Safe Drinking Water Act in 1985. Illinois EPA notified the home owners of the contamination and recommended that the use of private wells be discontinued. The city of Quincy connected both homes to the local public water supply in April 1986. Illinois EPA selected a cleanup remedy for the Adams County Landfill site in a 1993 Record of Decision (ROD). The selected remedy included: 1) installation of a security fence around the landfill, 2) deed restrictions to prohibit groundwater use and building construction on the site, 3) leachate collection, treatment and monitoring, 4) installation of surface controls to reduce erosion, 5) landfill cap improvements to provide a minimum of three feet of cover on the landfill over a Geosynthetic Clay Liner/Layer (GCL), 6) provision of a public water supply to nearby residents, 7) groundwater monitoring, and 8) groundwater containment and treatment if groundwater cleanup goals are not met and maintained. The potentially responsible party group began construction of the remedy in 1998 and substantially completed it in 1999. U.S. EPA conducted the third Five-Year Review at the Adams County Landfill site under the authority of Section 121(c) of the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) and in accordance with the National Contingency Plan (NCP). U.S. EPA found that the remedy was implemented in accordance with the requirements of the ROD and Explanation of Significant Differences (ESD). U.S. EPA found that the remedy at the Adams County Quincy Municipal Landfills #2 & #3 site is protective of human health and the environment. All engineered remedies are functioning as designed. Immediate threats to human health and the environment have been addressed. There is no known consumption of contaminated groundwater and no current exposure to the contaminants in the landfill. Institutional controls are in place and are effective. U.S. EPA will place a copy of this third Five-Year Review Report for the Adams County Landfill site into the site file and into the local information repository at the following locations: Quincy Public Library U.S. EPA Region 5 526 Jersey Street Records Center-7''^ Floor Quincy, Illinois 62301 77 West Jackson Boulevard Chicago, Illinois 60604 111 [This page intentionally left blank.] IV Five-Year Review Sunnmary Form SITE IDENTIFICATION Site Name: Adams County Quincy Municipal Landfills #2 & #3 EPA ID: ILD 980 607 055 Region: 5 State: IL City/County: Quincy/Adams 1 NPL Status: Final Multiple Operational Units Has the site achieved construction completion? (OUs)? Yes No Lead agency: U.S. EPA Author name (Federal or State Project Manager): Howard Caine, Remedial Project Manager Author affiliation: U.S. EPA Region 5 Review period: May 2012-January 2013 Date of site inspection: 6/13/2012 Type of review: Statutory Review number: 3 Triggering action date: 3/21/2008 Due date (five years after triggering action date): 3/21/2013 Five-Year Review Summary Form (continued) Issues/Recommendations OU(s) without Issues/Recommendations Identified In the Five-Year Review: OU 1 Protectiveness Statement(s) Operable Unit: Protectiveness Determination: OU 1 Protective Protectiveness Statement: The remedy at the Adams County Quincy Municipal Landfills #2 & #3 site is protective of human health and the environment. All engineered remedies are functioning as designed. Immediate threats to human health and the environment have been addressed. There is no known consumption of contaminated groundwater and no current exposure to the contaminants in the landfill. Institutional controls are in place and are effective. Site-wide Protectiveness Statement Protectiveness Determination: Protective Protectiveness Statement: The remedy at the Adams County Quincy Municipal Landfills #2 & #3 site is protective of human health and the environment. All engineered remedies are functioning as designed. Immediate threats to human health and the environment have been addressed. There is no known consumption of contaminated groundwater and no current exposure to the contaminants in the landfill. Institutional controls are in place and are effective. VI Third Five-Year Review Report I. Introduction The United States Environmental Protection Agency (U.S. EPA), in consultation with the Illinois Environmental Protection Agency (Illinois EPA), has conducted the third Five-Year Review of the remedial actions implemented at the Adams County Quincy Municipal Landfills #2 & #3 (Adams County Landtlll) Superfund site in Quincy, Adams County, Illinois. The review was conducted from May 2012 tlirough January 2013. This report documents the results of the review. The Purpose of the Review The purpose of a Five-Year Review is to determine whether the remedy at a site is protective of human health and the environment. The methods, findings, and conclusions of reviews are documented in Five-Year Review reports. In addition, Five-Year Review reports identify issues found during the review, if any, and provide recommendations to address them. Authority for Conducting the