ROD) Presents the Selected Remedies for Installation Restoration Program (IRP) Sites 63, 64, and 77 Located in the Site-Wide Operable Unit at Andersen AFB, Guam
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SDMS DOCID # 1150011 THE UNITED STATES NAVY INSTALLATION RESTORATION PROGRAM FINAL RECORD OF DECISION FOR SITES 63, 64, AND 77 SITE-WIDE OPERABLE UNIT ANDERSEN AIR FORCE BASE, GUAM December 2010 THE UNITED STATES NAVY INSTALLATION RESTORATION PROGRAM FINAL RECORD OF DECISION FOR SITES 63, 64, AND 77 SITE-WIDE OPERABLE UNIT ANDERSEN AIR FORCE BASE, GUAM December 2010 I Form Approved REPORT DOCUMENTATION PAGE OMB No. 0704-0188 The public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources. gathering and maintaining the data needed, and completing and review ing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of I information, including suggestions for reducing the burden. to the Department of Defense, Executive Services and Communications Directorate (0704·0188}. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number . PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ORGANIZATION. j 1. REPORT DATE (00-MM-YYYY) , 2. REPORT TYPE 3. DATES COVERED (From - To} 12-2010 Final 4. TITLE AND SUBTITLE 5a. CONTRACT NUMBER Final Record of Decision for Sites 63 , 64, and 77, FA8903-08-D-879 l Site-Wide Operable Unit, Andersen Air Force Base, Guam 5b. GRANT NUMBER I 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) 5d. PROJECT NUMBER ] Brenda Nuding, Summer Barbina, and Scott Moncri ef, P.O. AJJY20087006S2 5e. TASK NUMBER ] Task Order 0002 5f. WORK UNIT NUMBER 7. PERFORMING ORGANIZATION NAME[$) AND ADDRESS(ES) 8 . PERFORMING ORGANIZATION REPORT NUMBER 1 EA Engineering, Science, & Technology, Inc. NIA 1 P.O. Box 4355, Andersen AFB, Yigo, Guam 96929-4355 9 . SPONSORING/MONITORING AGENCY NAME(Sl AND ADDRESS(ESl 10. SPONSOR/MONITOR'S ACRONYM(S) Air Force Center for Engineering and the Environment AFCEE I Unit 14007 APO AP 96543-4007 11 . SPONSOR/MONITOR'S REPORT NUMBER(S) I NIA 12. DISTRIBUTION/AVAILABILITY STATEMENT ] Approved for public release; distribution is unlimited 13 . SUPPLEMENTARY NOTES 1 14. ABSTRACT This Record of Decision (ROD) presents the selected remedies for Installation Restoration Program (IRP) Sites 63, 64, and 77 located in the Site-Wide Operable Unit at Andersen AFB, Guam. This ROD summa1izes the history, enviro1m1ental background, extent of contamination, associated human health and ecological risks, public involvement, and rationale for the preferred remedies for Sites 63, 64, and 77. I 15. SUBJECT TERMS - Andersen AFB - Public Involvement - No Acti on 1 - Installation Restoration Program - Record of Decision 16. SECURITY CLASSIFICATION OF : 17. LIMITATION OF 18. NUMBER 19a. NAME OF RESPONSIBLE PERSON a. REPORT b. ABSTRACT c . THIS PAGE ABSTRACT OF PAGES ] u u u uu 1 9b. TELEPHONE NUMBER (Include area code) St andard Form 298 (Rev. 8/98) Prescribed by ANSI Std. Z39. 18 Table of Contents Table of Contents............................................................................................................................. i List of Tables ................................................................................................................................. iv List of Figures................................................................................................................................. v Acronyms and Abbreviations ........................................................................................................ vi 1.0 Declaration .........................................................................................................................1-1 1.1 Site Name and Location................................................................................................1-1 1.2 Statement of Basis and Purpose....................................................................................1-1 1.3 Assessment of Sites.......................................................................................................1-2 1.4 Description of Selected Remedies ................................................................................1-2 1.5 Statutory Determinations ..............................................................................................1-3 1.6 Data Certification Checklist..........................................................................................1-4 1.7 Authorizing Signatures .................................................................................................1-4 2.0 Decision Summary .............................................................................................................2-1 2.1 Site Names, Locations, and Descriptions .....................................................................2-1 2.2 Site History and Enforcement Activities ......................................................................2-2 2.3 Community Participation..............................................................................................2-3 2.4 Scope and Role of Operable Unit .................................................................................2-4 2.5 Site Characteristics........................................................................................................2-5 2.5.1 Physiography and Climate .....................................................................................2-5 2.5.2 Geology and Hydrogeology ...................................................................................2-6 2.5.3 Surface Water Hydrology ......................................................................................2-7 2.5.4 Ecology ..................................................................................................................2-7 2.5.5 Previous Site Characterization Activities ..............................................................2-8 2.5.6 Nature and Extent of Contamination ...................................................................2-10 2.5.7 Conceptual Site Model.........................................................................................2-12 2.6 Current and Potential Future Land and Resource Uses ..............................................2-12 2.6.1 Land Use ..............................................................................................................2-12 2.6.2 Ground and Surface Water Uses..........................................................................2-13 2.7 Summary of Site Risks................................................................................................2-14 2.7.1 Site 63 ..................................................................................................................2-17 2.7.1.1 Summary of Human Health Risk Assessment for Site 63 ................................2-17 2.7.1.2 Summary of Ecological Risk Assessment for Site 63 ......................................2-18 2.7.2 Site 64 ..................................................................................................................2-19 Final Record of Decision i December 2010 for Sites 63, 64, and 77 Site-Wide OU, Andersen AFB, Guam 2.7.2.1 Summary of Human Health Risk Assessment for Site 64 ................................2-19 2.7.2.2 Summary of Ecological Risk Assessment for Site 64 ......................................2-20 2.7.3 Site 77 ..................................................................................................................2-20 2.7.3.1 Summary of Human Health Risk Assessment for Site 77 ................................2-20 2.7.3.2 Summary of Ecological Risk Assessment for Site 77 ......................................2-21 2.7.4 Basis for Action – Sites 63, 64, and 77................................................................2-21 2.8 Remedial Action Objectives .......................................................................................2-22 2.8.1 Site 63 ..................................................................................................................2-22 2.8.2 Site 64 ..................................................................................................................2-22 2.8.3 Site 77 ..................................................................................................................2-22 2.9 Description of Alternatives for Sites 63, 64, and 77...................................................2-23 2.9.1 Description of Remedy Components ...................................................................2-23 2.9.2 Common Elements and Distinguishing Features of Each Alternative.................2-25 2.9.3 Expected Outcome of Each Alternative...............................................................2-25 2.10 Summary of Comparative Analysis of Alternatives for Sites 63, 64, and 77.............2-25 2.10.1 Overall Protection of Human Health and the Environment.................................2-26 2.10.2 Compliance with Applicable or Relevant and Appropriate Requirements..........2-27 2.10.3 Long-Term Effectiveness and Permanence .........................................................2-27 2.10.4 Reduction of Toxicity, Mobility, or Volume through Treatment ........................2-28 2.10.5 Short-Term Effectiveness ....................................................................................2-28 2.10.6 Implementability ..................................................................................................2-29