Record of Decision (Rods)
Total Page:16
File Type:pdf, Size:1020Kb
DEPARTMENT OF THE NAVY BASE REALIGNMENT AND CLOSURE PROGRAM MANAGEMENT OFFICE WEST 1455 FRAZEE RD, SUITE 900 SAN DIEGO, CA 92108-4310 5090 Ser BPMOW.mep/0026 1 5 0CT 2007 Ms. Anna-Marie Cook (3 copies) U.S. EPA Region 9 75 Hawthorne Street San Francisco, CA 94105-3901 Ms. Dot Lofstrom (3 copies) Department ofToxic Substances Control 8800 Cal Center Drive Sacramento, CA 95826-3200 Mr. John West San Francisco Bay Regional Water Quality Control Board 1515 Clay Street, Suite 1400 Oakland, CA 94612 Dear Ms. Cook, Ms. Lofstrom, and Mr. West: I am pleased to submit to you the Final Record ofDecision, Site 25 Soil, Alameda Point, Alameda, California dated September 2007. This Record ofDecision (ROD) documents the remedy for Site 25 soil and summarizes results of the remedial investigation and feasibility study. Unless otherwise noted, recipients receive one hard copy and one CD ofthe signed ROD. If you have any questions, please call Ms. Mary Parker, the Navy Project Manager, at 619 532-0945, or me at (619) 532-0907. THOMAS L. MACCHIARELLA BRAC Environmental Coordinator By direction ofthe Director Enclosure: 1. Final Record ofDecision, Site 25 Soil, Alameda Point, Alameda, California dated September 2007 5090 Ser BPMOW.mep/0026 15 OCT 2007 Copy to: Ms. Suzette Leith Mr. Kevin McDonald U.S. EPA Region 9 U.S. Coast Guard Housing Office 75 Hawthorne Street 99 Mosley Avenue San Francisco, CA 94105-3901 Alameda, CA 94501 Mr. Yvan Le Mr. Leo Lozano U.S. Coast Guard Maintenance U.S. Coast Guard 130I Clay Street, Suite 700N 1301 Clay Street, Suite 700N Oakland, CA 94612 Oakland, CA 94612 Ms. Debbie Potter Mr. Jack P. Hug City of Alameda, ARRA Chief, Environmental Law Branch 950 Mall Square, Bldg I U. S. Coast Guard MLCPAC (Legal) Alameda, CA 94501 Coast Guard Island, Bldg. 54A Alameda, CA 94501-5100 Mr. George Humphreys Mr. Peter Russell Alameda Point RAB Co-Chair Russell Resources 25 Captains Drive 440 Nova Albion Way Alameda, CA 94502 San Rafael, CA 94903 Mr. Mike McGowan Mr. Michael E. Quillin Arc Ecology Principal, ERM 4634 Third Street 1777 Botelho Drive, Suite 260 San Francisco, CA 94124 Walnut Creek, CA 94596 Ms. Carole Hossom (CD only) Mr. Craig Hunter (CD only) ATSDRlCDC Tetra Tech EMI Mailstop E-32 1080 Gold Center Drive, Suite 200 1600 Clifton Road Rancho Cordova, CA 95670 Atlanta, GA 30333 2 FINAL RECORD OF DECISION SITE 25 SOIL ALAMEDA POINT ALAMEDA, CALIFORNIA September 2007 Prepared for: Base Realignment and Closure Program Management Office West 1455 Frazee Road, Suite 900 San Diego, CA 92108-4310 Prepared under: Naval Facilities Engineering Command, Southwest Contract Number N62473-06-D-2201 Contract Task Order No. 0011 TABLE OF CONTENTS PAGE LIST OF TABLES.........................................................................................................................v LIST OF FIGURES .......................................................................................................................v APPENDICES ..............................................................................................................................vi ABBREVIATIONS AND ACRONYMS....................................................................................vii DECLARATION .......................................................................................................................D-1 1.0 SITE NAME, LOCATION, AND DESCRIPTION .............................................................1-1 1.1 SITE NAME............................................................................................................1-1 1.2 SITE LOCATION...................................................................................................1-1 1.3 SITE DESCRIPTION .............................................................................................1-2 2.0 SITE HISTORY AND ENFORCEMENT ACTIVITIES.....................................................2-1 2.1 SITE HISTORY ......................................................................................................2-1 2.2 INVESTIGATION ACTIVITIES...........................................................................2-2 2.2.1 CERCLA Investigation Activities .............................................................2-3 2.2.2 RCRA Investigation Activities ..................................................................2-4 2.2.3 EBS Investigation Activities......................................................................2-4 2.3 PREVIOUS REMOVAL ACTIONS ......................................................................2-4 2.3.1 Clover Park ................................................................................................2-5 2.3.2 Site 25 USCG North Village Housing and Estuary Park Areas ................2-5 3.0 COMMUNITY PARTICIPATION ......................................................................................3-1 3.1 RESTORATION ADVISORY BOARD ................................................................3-1 3.2 PUBLIC MAILINGS ..............................................................................................3-2 3.3 COMMUNITY PARTICIPATION FOR SITE 25 .................................................3-2 4.0 SCOPE AND ROLE OF OPERABLE UNIT AND RESPONSE ACTION........................4-1 5.0 SITE CHARACTERISTICS.................................................................................................5-1 5.1 GEOLOGY..............................................................................................................5-1 5.2 HYDROGEOLOGY ...............................................................................................5-2 5.3 NATURE AND EXTENT OF SOIL CONTAMINATION ...................................5-4 5.3.1 Extent of PAHs in Soil...............................................................................5-4 5.3.2 Extent of Metals and Cyanide in Soil ........................................................5-5 5.4 CONCEPTUAL SITE MODEL..............................................................................5-5 ALAMEDA CTO 0011 0011-0003 FnlROD_Soil_Site25 i Final Record of Decision Site 25 Soil Alameda Point DCN: ECSD-2201-0011-0003 September 2007 TABLE OF CONTENTS (Continued) PAGE 6.0 CURRENT AND POTENTIAL FUTURE SITE AND RESOURCE USES.......................6-1 6.1 CURRENT AND FUTURE LAND USES FOR SITE 25......................................6-1 6.2 CURRENT USES OF ADJACENT LAND............................................................6-1 6.3 GROUNDWATER USES.......................................................................................6-1 6.4 SURFACE WATER USES.....................................................................................6-2 7.0 SUMMARY OF SITE RISKS..............................................................................................7-1 7.1 BASELINE HHRA APPROACH...........................................................................7-2 7.1.1 Identification of Chemicals of Potential Concern......................................7-2 7.1.2 Exposure Assessment.................................................................................7-2 7.1.3 Toxicity Assessment ..................................................................................7-3 7.1.4 Risk Characterization.................................................................................7-3 7.2 SCREENING LEVEL ERA APPROACH .............................................................7-5 7.3 NCP POINT OF DEPARTURE ANALYSIS.........................................................7-6 7.3.1 Exposure Factors........................................................................................7-7 7.3.2 Uncertainty.................................................................................................7-9 7.3.3 Technical..................................................................................................7-11 8.0 REMEDIAL ACTION OBJECTIVES .................................................................................8-1 9.0 DESCRIPTION OF ALTERNATIVES ...............................................................................9-1 9.1 ALTERNATIVE 1 – NO ACTION ........................................................................9-1 9.2 ALTERNATIVE 2 – ICS........................................................................................9-2 9.3 ALTERNATIVE 3 – ICS AND EXCAVATION FROM 0 TO 2 FEET DEPTH IN UNIMPROVED AREAS OF DA 1, 2, 3, AND 6 IN PARCEL 181 WITH OFF-SITE DISPOSAL AND BACKFILL...........................................9-2 10.0 COMPARATIVE ANALYSIS OF ALTERNATIVES....................................................10-1 10.1 OVERALL PROTECTION OF HUMAN HEALTH AND THE ENVIRONMENT .................................................................................................10-1 10.2 COMPLIANCE WITH ARARS ...........................................................................10-2 10.3 LONG-TERM EFFECTIVENESS AND PERMANENCE..................................10-2 10.4 REDUCTION OF TOXICITY, MOBILITY, OR VOLUME THROUGH TREATMENT.......................................................................................................10-2 10.5 SHORT-TERM EFFECTIVENESS .....................................................................10-3 10.6 IMPLEMENTABILITY........................................................................................10-3 10.7 COST.....................................................................................................................10-3 10.8 STATE ACCEPTANCE .......................................................................................10-3