Contents Acronyms and Abbreviations .......................................................................................................... v Executive Summary ......................................................................................................................... vii 1.0 Introduction ........................................................................................................................ 1-1 2.0 Site Chronology ................................................................................................................. 2-1 3.0 Site Background ................................................................................................................. 3-1 3.1 Site Description and Current Land Uses ............................................................. 3-1 3.1.1 Upland Area ............................................................................................... 3-1 3.1.2 Lauritzen Channel ..................................................................................... 3-1 3.1.3 Parr Canal ................................................................................................... 3-2 3.1.4 Santa Fe Channel and Richmond Inner Harbor Channel .................... 3-2 3.2 Physical Setting ....................................................................................................... 3-2 3.2.1 Lithology ..................................................................................................... 3-3 3.2.2 Hydraulics .................................................................................................. 3-3 3.3 History of Contamination ..................................................................................... 3-4 3.4 Initial Response ....................................................................................................... 3-5 3.5 Basis for Taking Action .......................................................................................... 3-5 3.5.1 Upland Area ............................................................................................... 3-5 3.5.2 Marine Area ............................................................................................... 3-6 4.0 Remedial Actions............................................................................................................... 4-1 4.1 Selected Remedial Actions .................................................................................... 4-1 4.1.1 Upland Area ............................................................................................... 4-1 4.1.2 Marine Area ............................................................................................... 4-1 4.2 Remedial Actions Implementation ...................................................................... 4-4 4.2.1 Upland Area ............................................................................................... 4-4 4.2.2 Marine Area ............................................................................................... 4-5 4.3 Operations and Maintenance ................................................................................ 4-6 4.3.1 Upland Area ............................................................................................... 4-6 4.3.2 Marine Area ............................................................................................... 4-7 5.0 Progress Since the Last Five-Year Review .................................................................... 5-1 5.1 Protectiveness Statements from Last Review ..................................................... 5-1 5.2 Issues and Recommendations from Last Five-Year Review ............................ 5-1 5.3 Follow-up Actions from Last Five-Year Review ................................................ 5-2 6.0 Five-Year Review Process ................................................................................................ 6-1 6.1 Administrative Components................................................................................. 6-1 6.2 Community Involvement ...................................................................................... 6-1 6.3 Document Review .................................................................................................. 6-1 6.4 Data Review ............................................................................................................ 6-1 6.4.1 Upland Area ............................................................................................... 6-1 6.4.2 Marine Area ............................................................................................... 6-2 6.5 Regulatory Review ................................................................................................. 6-6 6.6 Site Inspection ......................................................................................................... 6-7 7.0 Technical Assessment ....................................................................................................... 7-1 ES061611063729BAO\112130001 ii CONTENTS, CONTINUED 7.1 Question A: Is the Remedy Functioning as Intended by the Decision Documents? ............................................................................................................. 7-1 7.1.1 Upland Area ............................................................................................... 7-1 7.1.2 Marine Area ............................................................................................... 7-1 7.2 Question B: Are the Assumptions Used at the Time of Remedy Selection Still Valid? ................................................................................................................ 7-2 7.2.1 Upland Area ............................................................................................... 7-2 7.2.2 Marine Area ............................................................................................... 7-2 7.3 Question C: Has Any Other Information Come to Light that Could Call Into Question the Protectiveness of the Remedy? ............................................. 7-3 7.3.1 Upland Area ............................................................................................... 7-3 7.3.2 Marine Area ............................................................................................... 7-3 8.0 Issues .................................................................................................................................... 8-1 9.0 Recommendations ............................................................................................................. 9-1 10.0 Protectiveness Statement ............................................................................................... 10-1 11.0 Next Five-Year Review ................................................................................................... 11-1 12.0 References ......................................................................................................................... 12-1 Tables 2-1 Chronology of Site Events .................................................................................................. 2-1 4-1 Summary of Remediation Goals ....................................................................................... 4-3 8-1 Issues ..................................................................................................................................... 8-1 9-1 Recommendations ............................................................................................................... 9-1 Figures 1-1 Site Location Map ................................................................................................................ 1-2 4-1 Location of Stormwater Interceptors at Levin Richmond Terminal ............................ 4-2 4-2 Sampling Locations for Marine Monitoring Program and Additional Sampling 2007 and 2009 ....................................................................................................................... 4-9 4-3 Sediment Sample Locations 2007-2008 ........................................................................... 4-11 6-1 DDT Concentrations in Water and Mussel Tissue at Marine Monitoring Stations ... 6-3 6-2 Comparison of Post-Remediation DDT Concentrations in Lauritzen Channel Sediment: 1997 Confirmation Results vs. 1999-2003 Investigation Results ................ 6-5 6-3 Storm Water System and Outfall Sampling Results ....................................................... 6-8 iii ES061611063729BAO\112130001 CONTENTS, CONTINUED Appendices A Documents Reviewed B Data Review C Risk Assessment and Toxicology Analysis D ARARs Review E Site Inspections: Site Inspection Checklist and Marine Signage Inspection Memo F Institutional Controls Assessment Review ES061611063729BAO\112130001 iv Acronyms and Abbreviations μg/kg micrograms per kilogram ARARs Applicable or Relevant and Appropriate Requirements AWQC Ambient Water Quality Criteria CDHS California Department of Health Services CERCLA Comprehensive Environmental Response, Compensation, and Liability Act of 1980 COC contaminants of concern DDT dichlorodiphenyl trichloroethane DTSC California Department of Toxic Substances Control ESD Explanation of Significant Differences ETS Environmental Technical Services FDA Food and Drug Administration FFS Focused Feasibility Study LRTC Levin Richmond Terminal Corporation mg/kg milligrams per kilogram MIT Massachusetts Institute of Technology MLLW mean lower low water NAS National Academy