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TABLE OF CONTENTS <br /> 10 EXECUTIVE SUMMARY...... ............ ............................... ......... . ... . .... . ....... .. . ........ 1 <br /> 2 0 INTRODUCTION... ................................................ .......... . ..... . .... . ........... ............2 <br /> 3 0 BACKGROUND INFORMATION,,,,,,,, ............ ...... ..... .... . . .... ..... ........................... 2 <br /> 3 1 INITIAL INVESTIGATION 2 <br /> 3 2 REMOVAL OF UNDERGROUND STOP-AGE TANKS 2 <br /> 3 3 ADDITIONAL SOIL BORING INVESTIGATION 3 <br /> 4.0 INTERIM CORRECTIVE ACTION..................... ....... .................... .. ....... . . ... <br /> 41 RESOURCES 3 <br /> 4 2 SOIL EXCAVATION AND SAMPLING 4 <br /> 421 Analytical Results of Soil Confirmation Samples 5 <br /> 4 3 SOIL STOCKPILE COMPOSITE SAMPLING 5 <br /> 431 Analytical Results of Soil Stockpile Samples 5 <br /> 4 4 INTERIM GROUNDWATER REMEDIATION 6 <br /> 441 Analytical Results of Groundwater•Samples • •• 6 <br /> 5.0 CONCLUSIONS . 7 <br /> 6 0 RECOMMENDATIONS. ........... ... ... . .... ... . 7 <br /> 7 0 CERTIFICATION. .. ... ............. . 8 <br />'� TABLES <br /> I Analytical Results,Limited Subsurface Investigation,December 1999 <br /> 2 Analytical Results,UST Excavation Soil and Groundwater Samples,January 21, 1999 <br /> 3 Analytical Results,Additional Subsurface Investigation,July 1999 <br /> 4 Analytical Results of Confirmation Soil Samples <br /> 5 Analytical Results of Composite Soil Samples <br /> 6 Analytical Results of Groundwater Samples,Interim Corrective Action <br /> FIGURES <br /> I Site Location Map <br /> 2 Site Plan Showing Borings form Imoal Investigation(December 1996) <br /> 3 Site Plan Showing Sample Locations through UST Removal (January 1999) <br /> 4 Site Plan Showing Sample Locations through Additional Investigation(July 1999) <br /> 5 Site Plan Showing Excavation Limits and Confirmation Sample Locations <br /> 6 Locations of Segregated Soil Piles <br /> 7 Site Plan Showing Locations of Proposed Monitoring Wells <br /> APPENDICES <br /> A Laboratory Reports for Confirmation Soil Samples <br /> B Laboratory Reports for Soil He Composite Samples <br /> C Temporary Discharge Permit from Sacramento County Water Quality Division <br /> D Laboratory Reports for Water Samples Collected During Interim Remedial Measures <br /> E Ground Zero General Field Procedures <br /> G\Data\GROLNDZEIMANSER\Reports\soilexsuni doc <br />