C(4e (!)C)-S Hr File: 180 Further disseimination only as directed by Manager, Environmental Restoration Program D.B Directorate, Ejelson Air Force Base, February 19,93, or higher DoD authority United States Air Force Environmental Restoration Program Elelson Air Force Base, Alaska Site Management Plan Elelson Air Force Base, Alaska April 1993 Site Management Plan Eielson Air Force Base, Alaska April 1993 Prepared for U.S. Air Force Eielson Air Force Base * ~~~~~~~Environmental Restoration Program Fairbanks Alaska under Contract DE-ACO6-76RL0 1830 Prepared by Pacific Northwest Laboratory for Environmental Management Operations under a Related Services Agreement with the U.S. Department of Energy Environmental Management Operations Richland, Washington 99352 TABLE OF CONTENTS 1.0 INTRODUCTION .. .. .......................... ................ 1 2.0 OPERABLE UNIT INVESTIGATIONS. .. ...... ...................... 17 3.0 SOURCE EVALUATION REPORTS. .. ............................... 30 4.0 TECHNOLOGY DEMONSTRATIONS. .. ............................... 34 5.0 SITE-WIDE INVESTIGATION. .. ............................ .... 35 6.0 REFERENCES .. .. .......................... ................. 40 APPENDIX A: FIELD SAMPLING PLAN .. ........ .................... A.1 APPENDIX B: QUALITY ASSURANCE PROJECT PLAN. .. ........ ..........B.1 APPENDIX C: HEALTH AND SAFETY PLAN .. .. ........................ C.1 LIST OF TABLES 1.1 Summary of IRP Investigations and Reports .. .. ...... ........ 5 1.2 Source Area Descriptions. .. .. ...... .. ...... ............. 7 1.3 List of Potential ARARs. .. .. ......... ........ .... ..... 13 2.1 Schedule for Operable-Unit Investigations. .. .... ...........20 2.2 Operable Unit Source Areas. .. .. ...... .. ...... ........... 21 3.1 Summary of Source Evaluation Report Recommendations for Eiel son AFB .. .. ...... .. ...... ......... ........... 31 5.1 Schedule for Site-Wide Investigation. .. .. ...... ...........39 LIST OF FIGURES 1.1 Site Location Map .. .. ...... ........ .... ..... ......... 16 2.1 Operable Unit 1 Source Areas. .. .. ...... ........ .... ..... 23 . ~2.2 Blair Lakes Source Areas. .. .. ...... .. ...... ............. 24 2.3 Operable Unit 2 Source Areas. .. .. ...... ........ .... ..... 25 2.4 Operable Unit 3 Source Areas. .. .. ...... ............ ..... 26 2.5 Operable Unit 4 Source Areas. .. .. ...... ........ .... ..... 27 2.6 Operable Unit 5 Source Areas. .. .. ...... ........ .... ..... 28 2.7 Operable Unit 6 Source Areas. .. .. ...... ....... ......... 29 3.1 Source Evaluation Report Source Areas .. .. ...... .... ....... 33 * ~~~~~~~~~1.0INTRODUCTION Elelson Air Force Base (AFB) is located in central Alaska approximately 25 miles southeast of Fairbanks (Figure 1.1). During the 1980s, soil and ground-water contamination at the base were identified and evaluated through the Department of Defense's Installation Restoration Program (IRP). In November 1989, Elelson AFB was listed by the U.S. Environmental Protection Agency (USEPA) on the National Priorities List of Federal Superfund sites. In May 1991, the United States Air Force (USAF), USEPA, and the Alaska Department of Environmental Conservation (ADEC) signed a Federal Facilities Agreement (FFA) for Eielson AFB that established the framework and schedule for environmental clean-up efforts under the Comprehensive Environmental Response and Compensation Liability Act (CERCLA), the Resource Conservation and Recovery Act, and applicable state law. Remedial investigation and feasibility study (RI/FS) activities were initiated to satisfy the requirements of these regulations. This Site Management Plan (SMP) is the planning document for implementing * ~~RI/FS activities at Eielson AFB. Purposes of the SMP are as follows: *to describe the approach for confirming the nature and extent of contamination at the base and selecting appropriate remedial actions *to coordinate investigations, to maximize the effective use of data and resources, and to expedite remediation *to provide generic methods for conducting field investigations to ensure comparability of data. This SMP does not provide a review or interpretation of past studies at Eielson, and does not include planning for remedial design or remedial action. The SMP is a primary document required by the FFA for Eielson AFB. The FFA is the overall controlling document for all activities identified in this SMP. 1.1 SITE DESCRIPTION Discussions of Site background, physical setting, and past waste management practices can be found in the IRP reports for Eielson AFB (Table 1.1). The primary contaminants of concern are petroleum, oil, and * ~~lubricant (POL) products and chlorinated solvents. The FFA identifies 60 1 known or potential source areas of contamination at the Site. In the FFA, 26 source areas were grouped into six Operable Units (OUs) based on the type of release that occurred at each area. Three additional source areas were assigned to OUs after the FFA was signed. Each CU will be characterized through an RI/FS to confirm the nature and extent of contamination at each source area and to develop and evaluate remedial alternatives. Thirty-four potential source areas were not initially included in the RI/FS process because they did not appear to present a significant risk to human health or the environment. These areas are collectively referred to as Source Evaluation Report (SER) sources. Four additional potential source areas were designated as SER sites after the FFA was signed. Each SER site will be evaluated to determine if no further action (NFA), assignment to an CU for complete RI/FS characterization, or interim remedial action is required. Table 1.2 identifies each source area at Eielson AFE and identifies the OU or SER to which it belongs. 1.2 GOALS OF REMEDIATION The goal of site remediation under CERCLA is to reduce contamination to levels that protect human health and the environment. During the RI/FS process, remediation goals are established in part through the consideration of applicable or relevant and appropriate requirements that specify acceptable exposure levels for various constituents. After remediation is complete, concentrations of contaminants must not exceed federal and state environmental regulations, criteria, and standards that are determined legally applicable or relevant and appropriate to the site. Relevant and appropriate requirements are those that are not legally applicable, but address circumstances that are sufficiently similar to conditions at the site. Other nonpromulgated criteria, advisories, and guidance may also be considered in the development of remediation goals. A preliminary list of potential laws and regulations that may be applicable or relevant and appropriate to Eielson AFB is provided in Table 1.3. 2 . ~1.3 APPROACH TO CERCLA INVESTIGATIONS Four types of CERCLA investigations will be coordinated to accomplish the objectives of environmental cleanup at Eielson AFB: OU RI/FS - The RI/FS evaluates the nature and extent of contamination at each source area within an OU and identifies and evaluates remedial alternatives. The RI/FS includes a baseline risk assessment, which evaluates the potential threat to human health and the environment in the absence of any remedial action. *Source evaluation reports - Potential source areas will be evaluated based on existing data, and an appropriate course of action for each will be recommended. *Site-wide investigation - Information needed to support other investigations and to complete the characterization of the site will be collected and analyzed. Technology demonstrations - These investigations will assess the field performance and feasibility of potential remedial alternatives. These investigations are closely related, and data generated by one type of study will be used to support others. 1.4 ORGANIZATION OF SMP Sections 2 through 5 of this SMP describe the objectives and approach to each type of CERCLA investigation at the Site. The appendices contain the Field Sampling Plan, Quality Assurance Project Plan, and Health and Safety Plan that apply to all Site activities. The purpose and contents of each appendix are briefly described below. *Appendix A, Field Sampling Plan, presents the procedures to be used for field investigation tasks identified in the work plans. Procedures used by subcontractors CH2M Hill and Pacific Northwest Laboratory are included in this appendix. Appendix B, Quality Assurance Project Plan, defines procedures to ensure that data quality objectives identified in the work plans are met. Quality assurance procedures used by CH2M Hill and Pacific Northwest Laboratory are included in this appendix. *Appendix C, Health and Safety Plan, provides procedures and information needed to safely perform field work at Eielson AFB. 3 These generic plans are intended to provide consistency among the different investigations and ensure comparability of data. Variations from or additions to these generic plans will be documented in OU Management Plans or event- specific sampling and analysis plans (SAPs). 4 TABLE 1.1. Summary of the IRP Investigations and Reports for Elelson Air Force Base IMP Author Report and Information Obtained Date Status PHASE)I CH2M HILL IRP Records Search: Detailed review of pertinent installation 11-82 complete records, contacts with 15 gov't organizations, she reconnaissance, calculated Hazardous Assessment Rating Methodology on 43 source areas. Recommended 17 source areas for further investigation. PHASE 11 Dames and IRP Phase 11Confirmation/Ouantification Stage