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TABLE OF CONTENTS <br /> PROBLEM ASSESSMENT REPORT AND CORRECTIVE ACTION PLAN <br /> EXECUTIVESUMMARY...........................................................................................................................i <br /> 1.0 BACKGROUND.....................................................................................................................................1 <br /> 1.1 Site Description and History...........................................................................................................l <br /> 1.2 Previous Environmental Studies.....................................................................................................1 <br /> 1.3 Summary of Current Environmental Study...................................................................................2 <br /> 2.0 INVESTIGATIVE METHODS .............................................................................................................3 <br /> 2.1 Vapor Extraction Pilot Test............................................................................................................3 <br /> 3.0 INVESTIGATIVE FINDINGS..............................................................................................................4 <br /> 3.1 Site Geology....................................................................................................................................4 <br /> 3.2 Site Hydrogeology..........................................................................................................................4 <br /> 3.3 Soil Analytical Results....................................................................................................................4 <br /> 3.4 Groundwater Analytical Results.....................................................................................................4 <br /> 3.5 Vapor Extraction Pilot Test............................................................................................................4 <br /> 4.0 DATA EVALUATION AND DISCUSSION........................................................................................5 <br /> 4.1 Petroleum Hydrocarbons in Soil....................................................................................................5 <br /> 4.2 Vapor Extraction Pilot Test............................................................................................................5 <br /> 5.0 CONCLUSIONS.....................................................................................................................................6 <br /> 6.0 DISCUSSION OF INTERIM SOIL REMEDIAL OPTIONS ..............................................................7 <br /> 6.1 No Remediation Alternative........................... ...............................................................................7 <br /> 6.2 Excavation of Soil...........................................................................................................................7 <br /> 6.3 On-site Soil Aeration,Off-site Soil Treatment..............................................................................7 <br /> 6.4 Bioremediation................................................................................................................................7 <br /> 6.5 Soil Vapor Extraction.....................................................................................................................8 <br /> 7.0 PROPOSED CORRECTIVE ACTION PLAN......................................................................................9 <br /> 7.1 Preliminary Design Criteria............................................................................................................9 <br /> 7.2 Off-Gas Treatment........................................................................................................................10 <br /> 7.3 VES Design........................., ..................................................................................10 <br /> 7.4 Schedule <br /> 8.0 RECOMMENDATIONS......................................................................................................................12 <br /> 9.0 REPORT LIMITATIONS ....................................................................................................................13 <br />