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i <br /> TABLE OF CONTENTS <br /> EXECUTIVESUMMARY........................................................................................................................II <br /> 1.0 INTRODUCTION...............................................................................................................................1 <br /> 2.0 SITE DESCRIPTION.........................................................................................................................1 <br />` 3.0 HISTORICAL BACKGROUND .......................................................................................................1 <br /> 4.0 HYDROGEOLOGY............................................................................................................................4 <br /> 5.0 DISTRIBUTION OF SOIL AND GROUNDWATER CONTAMINATION.................................5 <br /> 5.1 DISTRIBUTION OF SOIL CONTAMINATION ..............................................................................5 <br />' 5.2 DISTRIBUTION OF GROUNDWATER CONTAMINATION........................................................6 <br /> 6.0 SENSITIVE RECEPTOR SURVEY AND RISK BASED CORRECTIVE ACTION <br /> EVALUATION............................................................................................................................................7 <br /> 6.1 SENSITIVE RECEPTOR SURVEY...................................................................................................8 <br /> 6.1.1 Wells Within 2,000 Feet...............................................................................•--................................8 <br /> 6.1.1 Surface Waters................................................................................................................................9 <br /> 6.1.2 Schools............................................................................................................................................9 <br /> 6.1.3 Utilities ...........................................................................................................................................9 <br /> 6.1.4 Site Reconnaissance............................................................................••--....•......-----........................9 <br />' 6.1.5 City Wells...........................................................................................•---......................................10 <br /> 6.1.6 Neighbors......................................................................................................................................10 <br /> 6.1.7 Old Farm Houses and Orchards....................................................................................................10 <br /> 6.1.8 LUST Sites....................................................................................................................................10 <br /> r 6.2 TIER 1 RISK BASED CORRECTIVE ACTION EVALUATION..................................................10 <br /> 7.0 CORRECTIVE ACTION PLAN.....................................................................................................11 <br />' 7.1 DESCRIPTION OF CORRECTIVE ACTION STRATEGIES ........................................................11 <br /> 7.2 COMPARISONS OF REMEDIATION ALTERNATIVES.............................................................12 <br />' 7.3 COST EVALUATION......................•----�-�--..........................................--�-�-�----...............................-.13 <br /> 7.4 PREFERRED ALTERNATIVE. .14 <br /> 8.0 TARGET CLEAN-UP LEVELS......................................................................................................14 <br /> 9.0 SUMMARY AND CONCLUSIONS................................................................................................14 <br /> 10.0 LIMITATIONS..................................................................................................................................15 <br /> 1 <br /> APPENDICES <br /> APPENDIX A—FIGURES <br /> Figure i Vicinity Map <br /> Figure 2 Site Map With Monitor Well and Soil Boring Locations <br /> Figure 3 Generalized Geological Section (View Looking North) <br /> Figure 4 Generalized Geological Section (View Looking East) <br /> Figure 5 Generalized Geological Section (View Looking East) <br /> Figure 6 Hydrograph November 1993 - April 2002 <br /> Figure 7 Distribution of TPH-G In Soil 1994 <br /> 4M iv <br /> CONDOR <br />