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Jl. i i <br /> Remedial Actkon Plan and Further Site Assessment 11 <br /> 7-Eleven Store No 19976 1399 N Main St Manteca CA May 30 2000 <br /> I <br /> CONTENTS <br /> ' 10 GEOLOGY AND HYDROGEOLOGY 1 _ <br /> 20 SUMMARY OF SITE ASSESSMENT DATA AND PROPOSED NEW ASSESSMENT 2 <br /> 30 INTERIM REMEDIATION AND GENERAL CLEANUP GOALS 4 <br /> 40 FEASIBLE SUPPLEMENTAL REMEDIATION ALTERNATIVES 5 <br /> 41 Vapor Extraction/Air Sparging 5 <br /> 42 Electrokinesis 7 <br /> 43 Enhanced Intrinsic Biodegradation 7 <br /> ' 50 SUPPLEMENTAL REMEDIATION ALTERNATIVE COST COMPARISON 9 <br /> 51 Capital Costs 9 <br /> 52 Installation Costs 9 <br /> ' <br /> 53 Monthly O&M Costs 10 <br /> 54 Life-Cycle O&M Costs 10 <br /> ' <br /> 60 REMEDIATION IMPLEMENTATION 11 <br /> 61 Length of Remediation 11 <br /> 62 Progress Monitoring 11 <br /> 63 Permitting/Reporting 12 <br /> 64 Health and Safety 12 <br /> 70 SITE CLOSURE 13 <br /> 1 <br /> FIGURES <br /> 1 Site Location Map <br /> 2 Sensitive Receptor Map <br /> 3A/B Site Plan and Radius of Interim Treatment Influence in Relation to Hydrocarbon Concentrations <br /> 4AIB Cross-Sections <br /> 5 General Remediation Feasibility Analysis <br /> 1 <br /> 1 <br />