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TABLE OF CONTENTS <br /> 1.0 EXECUTIVE SUMMARY ................ ... ..... .......... ........................ ........ . ....... 1 <br /> 2.0 SITE DESCRIPTION AND BACKGROUND.. ......... ..... ........... ....... . ...... ...3 <br /> 21 Site Setting 3 <br /> 22 Topography and Surface Conditions 3 <br /> 3.0 HISTORICAL AND 2005 SITE ASSESSMENT ACTIVITIES...... ......... ..... 5 <br /> 31 Summary of Environmental Investigations 5 <br /> 32 2005 Site Characterization Activities 5 <br /> 4.0 SUBSURFACE CONDITIONS. ....... ......... .......... .... ............ ...... ........ . .... ... S <br /> 41 Geologic Conditions 8 <br /> 42 Hydrogeology 8 <br /> 43 Extent of Petroleum Hydrocarbon Impact to Soil 9 <br /> 44 Extent of Petroleum Hydrocarbon Impact to Groundwater 9 <br /> 5.0 REMEDIAL ACTIONS............. ....... ................ ......... ........ ....... . .... . . ...... 12 <br /> 51 Soil Overexcavation and Site Renovation 12 <br /> 6.0 POTENTIAL EXPOSURE PATHWAYS AND SENSITIVE RECEPTOR <br /> SURVEY ......... ................ ....... ...... .......... ........ ...... ................. ........ ....... ............ .. 13 <br /> 61 Potential On-site Exposure Pathways 13 <br /> 62 Potential Off-site Receptors - Water Supply Wells 14 <br /> 70 SUMMARY AND DISCUSSION.......................... .......... ......... ..... .. ...... . .. 15 <br /> 71 Summary 15 <br /> 72 Discussion 15 <br /> 73 Recommendation 16 <br /> 8.0 LIMITATIONS............ ...... . ..... .................................... .. ........... ..... ......... . . 17 <br /> K\USA Gasolme108351Reportslusa835-scm-assessment-report doc Page in 5TKAW5 <br />