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Underground Storage Tank Removal Report and Work Plan for Monitoring Well Installation 5 Southland Store#17334,4501 North Pershing Avenue,Stockton,California October 27, 1998 methods 8020/8015 modified, and total lead by EPA Method 6010 If MTBE was detected by EPA method 8020, the sample was additionally analyzed for the oxygenates TBA, MTBE, DIPE, ETBE, and TAME by EPA Method 8260 52 Results of the Soil Sample Analysis Laboratory analytical results of soil samples collected September 14, 1998 are summarized in Table 1, and copies of the analytical data are included in Appendix C The highest TPH-G concentration in the soil was detected in sample TNK-3S, collected beneath the south end of the southeastern UST at 4,300 mg/kg The highest MTBE concentration in soil was detected in sample TNK-1N at 1 3 mg/kg and confirmed by EPA 8260 at 0 84 mg/kg Total lead was detected in sample TNK-3N at 5 4 mg/kg Benzene was not detected in any of the samples collected beneath the USTs 5 3 Soil Stockpile Sampling/UST Excavation backfilling Approximately 185 cubic yards of sod was generated during the excavation of the USTs and stockpiled • on site A total of twelve soil samples were collected from stockpiled soil (SP-4) following the sampling protocol mentioned in the previous sections Soil stockpile and sample locations are shown on a site sketch included in Appendix A The twelve soil samples were combined in the lab into six samples and analyzed for BTEX, MTBE, and TPH-G by EPA Method 8020/8015 and total lead by EPA 6010 In addition, sample SP4E was analyzed for MTBE by EPA Method 8260 and sample SP-4D was analyzed for soluble (WET) lead by EPA Method 6010 TPH-G was detected in sample SP-4E at a concentration of 34 mg/kg MTBE was detected in sample SP-413 at 0 12 mg/kg by EPA Method 8020, and in sample SP-4E at 0 11 mg/kg by EPA Method 8260 Total lead was detected in samples SP-417 and SP4D at concentrations of 5 8 mg/kg and 66 mg/kg, respectively Soluble (WET) lead concentrations in sample SP-4D reported below method detection limit(0 25 milligrams per liter) Following sample collection, the stockpiled soil was used as backfill material In the former UST pit 6 0 WORK PLAN FOR MONITORING WELL INSTALLATION 6 1 Soil Boring/Soil Sampling Fluor Daniel GTI will drill one sod boring at the location shown on Figure 2 using a truck-mounted drill rig equipped with 10-inch-diameter hollow-stem augers The location of the well was chosen based on 17334ust rpt FLUOR DANIEL GTI 1�5_