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TABLE OF CONTENTS <br /> 1.0 INTRODUCTION.......................................................................... .......... . ........ 1 <br /> 2.0 HISTORICAL AND 2005 SITE ASSESSMENT ACTIVITIES........ .............3 <br /> 21 Summary of Environmental Investigations 3 <br /> 22 2005 Site Characterization Activities 3 <br /> 3.0 SUBSURFACE CONDITIONS........ ..... ..... ............ .... . .. ... ... . .... .. .. ........ 8 <br /> 31 Geologic Conditions 8 <br /> 32 Hydrogeology 8 <br /> 33 Extent of Petroleum Hydrocarbon Impact to Soil 9 <br /> 34 Extent of Petroleum Hydrocarbon Impact to Groundwater 10 <br /> 4.0 REMEDIAL ACTIONS..................................................................................... 12 <br /> 41 Soil Excavation and Removal 12 <br /> 42 Free Product Removal 12 <br /> 43 Soil Vapor Extraction 12 <br /> 5.0 SUMMARY.............................................. ..... ....... ..... ....... .. .. ....•..... . .. .. . . 13 <br /> 6.0 LIMITATIONS... . .. .. . ....... .......................................................................... 15 <br /> • <br /> K 113p Arco for URS161001Reports16100 assessment rpt&scm update doc Page iii <br />