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CONTENTS <br /> 1 INTRODUCTION....................... ......... . .. ... .. ... . .. ..... ... .. . . ... .... .. .... . ... ...... ..1 <br /> 2 SITE DESCRIPTION. .. ....... .. ....2 <br /> 21 Site Description 2 <br /> 2 2 Topography and Surface Conditions 2 <br /> 2 2 1 Drainage 2 <br /> 2 2 2 Zoning and Land Use 2 <br /> 2 2 3 Meteorology Data 3 <br /> 3 SUMMARY OF SITE ASSESSMENT ACTIVITIES..... ... ..... .... .... .. .... . .... ........4 <br /> 4 SUBSURFACE CONDITIONS .. .. ..... ........................................ ...... ............................5 <br /> 41 Geologic Conditions 5 <br /> 4 2 Hydrogeology 6 <br /> 4 2 1 Utilities 8 <br /> 43 Extent of Petroleum Hydrocarbon Impact 8 <br /> 4 3 1 Extent of Residual Petroleum Hydrocarbon Impact 8 <br /> 4 3 2 Extent of Dissolved Petroleum Hydrocarbon Impact 10 <br /> 5 REMEDIAL ACTIONS........................................................... ..... ..... .......................... ..11 <br /> 6 POTENTIAL EXPOSURE PATHWAYS AND SENSITIVE RECEPTORS .. ... ..12 <br /> 61 Onsite Receptors 12 <br /> 62 Offsite Receptors 12 <br /> 6 2 1 Water Supply Wells 12 <br /> 6 2 2 California Aqueduct 13 <br /> 7 SUMMARY........... ............... .... ................ ................ ..... . .................. ... . ..... . .... . .14 <br /> 8 LIMITATIONS .... ............... ...... ........................... . ........................................ ..... ....16 <br /> P 113p-Arco for URS161001Reports16100 SCM doe Stratus <br />