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Underground Storage Tank Removal Report and Work Plan for Monitoring Well Installation 4 . Southland Store#17334,4501 North Pershing Avenue,Stockton,California October 27, 1998 were capped with Teflon tape and plastic caps, sealed with tape, labeled and placed in an insulated container for transport under chain-of-custody manifest to Acculabs, Inc in Davis, California for analysis The samples were analyzed for BTEX, MTBE, and TPH-G by EPA Methods 8020/8015 modified In addition, sample NTP-E-14' was analyzed for the oxygenates TBA, MTBE, DIPS, ETBE, and TAME by EPA Method 8260 4 4 Results of Soil Sample Analysis Analytical results for the soil samples collected from the new tank pit excavation are summarized in Table 1 Laboratory analytical reports and chain-of-custody are included in Appendix C BTEX, MTBE, and TPH-G were not detected in the four samples collected from the new tank excavation TBA, DIPE, ETBE, and TAME were not detected in sample NTP-E-14' 5 0 UNDERGROUND STORAGE TANK REMOVAL On September 14, 1998, Ecology Control Industries (ECI) of Richmond, California triple rinsed the three 10,000-gallon single-walled steel USTs at the site The tank rinse water was pumped from the three USTs using a vacuum truck and transported under hazardous waste manifest to Romic Chemical Corporation in East Palo Alto, California to be recycled (Appendix D) Approximately 185 cubic yards of tank overburden, generated during the excavation of the USTs, was stockpiled on site On September 14, 1998, the Maness Corporation, through a subcontractor, coordinated the removal and disposal of the three USTs Mr Michael Kith and Mr Harlin Knoll of the SJCPHS were on site to witness the UST removal The USTs were removed from the excavation using a crane and loaded onto trailers The tanks were transported from the site by ECI under hazardous waste manifest to Erickson, Inc in Richmond, California for disposal (Appendix E) All three USTs were in good condition with no visual holes or pits Groundwater was not encountered in the excavation 5 1 Soil Sample Collection On July 17, 1998, Fluor Daniel GTI personnel collected six soil samples from the floor of the UST excavation Soil samples were collected beneath each end of the three USTs at a depth of approximately 14 feet BGS (Figure 2) All soil and groundwater sampling was conducted at the direction and observation of Mr Michael Kith and Harlin Knoll of the SJCPHS Soil samples were collected in 2-inch-diameter by 6-inch-long brass tubes directly from a backhoe bucket The sample tubes were sealed with teflon pads, plastic caps and tape, labeled, placed on ice in an insulated container, and submitted for analyses under chain-of-custody manifest to state-certified Acculabs, Inc in Davis, CA The six soil samples were analyzed for BTEX, MTBE, and TPH-G by EPA 17334ust rpt FLUOR DANIEL GTI i�