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1 <br />' CONTENTS <br /> Page <br /> LIST OF FIGURES <br /> LIST OF TABLES <br />' SITE CONTACTS <br /> 1 INTRODUCTION I <br />' 2 SITE BACKGROUND 2 <br />' <br /> 21 SITE LOCATION AND LAND USE 2 <br /> 22 SITE GEOLOGY AND HYDROGEOLOGY 2 <br /> 23 PREVIOUS ENVIRONMENTAL ACTIVITIES AT THE SITE 3 <br /> 3 CURRENT ACTIVITIES AND DATA GAP INVESTIGATIONS 5 <br />' <br /> 31 SOIL AND SOIL GAS INVESTIGATION 5 <br /> 32 WELL SEARCH 5 <br /> 4 EVALUATION OF REMEDIAL ALTERNATIVES 7 <br /> 41 SCREENING CRITERIA FOR REMEDIAL ALTERNATIVE <br /> DEVELOPMENT 7 <br /> 42 DEVELOPMENT OF CORRECTIVE ACTION ALTERNATIVES 7 <br /> 5 RISK-BASED CORRECTIVE ACTION ANALYSIS 10 <br /> 6 SUMMARY AND CONCLUSIONS 11 <br /> REFERENCES 14 <br /> FIGURES <br /> TABLES <br /> IAPPENDIX A Regulatory Correspondence <br /> APPENDIX B Hydrographs for Selected Wells <br /> APPENDIX C Historical Soil Analytical Results <br /> APPENDIX D Historical Soil Vapor Extraction System Data <br /> APPENDIX E Drilling and Sampling Protocols <br /> APPENDIX F Soil Sample Laboratory Analytical Reports <br /> APPENDIX G Soil Vapor Sample Laboratory Analytical Reports <br /> APPENDIX H California Water Service Company Records <br /> I APPENDIX I Environmental Data Resources Report <br /> APPENDIX J Vicinity Map Showing Results of 1987 Well Survey <br /> APPENDIX K Excerpts from Contaminant Hydrogeology <br /> . APPENDIX L Risk-Based Corrective Action Analysis <br /> I <br />