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4.0 Soil'Disposal 3r During UST removal and over-excavation activities, approximately 520 tons (400 cubic yards)of soil were excavated and stockpiled on-site. Based on the results of the laboratory analysis, the stockpiled soils from the initial tank and fuel dispenser island excavation activities were used to L{ - F backfill the excavation. The soil stockpile generated from the over-ekcavation activities was transported to Forward Landfill, a Class II facility located in Manteca, California, for disposal. A copy of the non-hazardous waste manifest and the weight ticket is included in Appendix F. . 5.0 Site Restoration Following completion of the UST removal activities, Gettler backfilled the tank excavation using r the original stockpile and clean imported fill material and then compacted. Site restoration activities were conducted by Gettler personnel independent of Shaw oversight. f 6:0 Conclusions Based on the field observations and laboratory analytical data presented in this report, Shaw concludes the following: • On December 18, 2002, both the diesel and gasoline compartments of the split- walled 15,000-gallon UST were emptied and rinsed, with the removed fuel and '. rinsate being transported off-site For disposal. • On August 7, 2003, the split-walled 15,000-gallon UST.was excavated and transported off-site for disposal. ' F Results of the analysis detected TPH-D in one of the dispenser island samples } [DI-01(51/2')] at a concentration of 210 ppm. No other petroleum hydrocarbon analytes or fuel oxygenates were detected in any of the remaining initial soil samples. , • Following over-excavation activities, no petroleum hydrocarbon analytes or fuel oxygenates were detected in the sample collected from the fuel dispenser island area. • Approximately 7 cubic yards of stockpiled soils were transported off-site for disposal. CNC17110-7-0310:SHARaUS'nO3-0122_doc 5 ii 1', e IL ; R i - i