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Underground Storage Tank Removal Report and Work Plan for Additional Site investigation 5 Southland Store#14117 2725 Country Club Boulevard Stockton California September 29 1998 the soil sample NTP-SW-15 at 0 092 mg/kg and 1 5 mg/kg, respectively MTBE,TBA, and methanol were detected by EPA method 8260 at 23 mg/kg, 98 mg/kg, and 240 mg/kg, respectively 4.3 Tank Pit Dewatering ' On July 24 through July 30, 1998, approximately 30,900 gallons of water was removed from the new tank pit excavation using vacuum trucks to allow for the Installation of the two new 10,000 gallon USTs ' The water was transported by Integrated Wastestream Management as non-hazardous waste to Seaport Environmental in Redwood City, CA for recycling Non-hazardous water transport forms for the seven loads removed from the site are included in Appendix D 4 4 Conductor Casing Installation ' During the UST installation,three conductor casings were placed between the two 10,000-gallon USTs in the pea gravel backfill at the locations shown in Figure 2 Each of the three casings are constructed ' of 10-Inch diameter solid Schedule 40 PVC piping and extend to approximately 12 feet BGS Each conductor casing is protected at the surface by 10-diameter slip cap and traffic-rated street box(with watertight bolted lid) set in concrete The conductor casings were installed for possible use during future environmental investigations at the site ' 5 0 WASTE DISPOSAL Soil generated during the removal of the former USTs and the excavation of the new tank pit was stockpiled and removed from the site on five separate events Soil samples were collected in 6-inch diameter brass sleeves approximately 18-Inches beneath the surface of the soil stockpile Analytical ' results for the sod samples collected are included in Appendix C and summarized in Table 2 All soil generated at the site was transported by Belshire Environmental Services, Inc as non-hazardous waste to TPS Technologies, Inc in Richmond, California for treatment and disposal Non-hazardous Waste ' Transport forms are included in Appendix E On July 15 and 16 1998, prior to the removal of the USTs, approximately 278 tons(185 cubic yards) of 1 soil generated during the UST excavation was removed from the site and transported by Belshire Environmental Services, Inc to TPS Technologies, Inc in Richmond, California for proper treatment and disposal The soil was not sampled prior to removal from the site but was sampled upon arnval at TPS The soil sample was submitted to Weck Laboratories, Inc in Industry, California and analyzed for BTEX, TPH-G, and TPH-D following EPA methods 8015/8020 TPH-G and TPH-D were detected at 14117usirpt FLUOR DANIEL G71