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A total of three soil samples were collected during UST excavation, one from each end of the excavation (NCS-3 and NCS-4), and one from the product supply piping trench (NCS-5) Locations and approximate depths of the soil samples are provided on Figure 3 Soil samples were analyzed for benzene, toluene, ethylbenzene, and xylene (BTEX) by EPA Method 8020, total petroleum hydrocarbons (TPH) as gasoline by modified EPA Method 8015, ethylene dibromide using EPA Method 8010, organic lead using EPA Method 7420 and total lead using EPA Method 6010 Analytical results are summarized in Table 1 In sample NCS-3, collected from the west end of the UST excavation immediately after tank removal, total petroleum hydrocarbons (TPH) as gasoline was reported at a concentration of 3,500 milligrams per kilogram (mg/kg) Other organic ' compounds reported above laboratory detection limas in sample NCS-3 were 30 mg/kg benzene, 140 mg/kg toluene, 330 mg/kg total xylenes, and 77 mg/kg ethylbenzene TPH as gasoline was reported ' at a concentration of 13,000 mg/kg in sample NCS-4, collected from the east end of the UST excavation immediately after tank removal Other organic compounds reported above laboratory detection limits in sample NCS-4 were 110 mg/kg benzene, 440 mg/kg toluene, 900 mg/kg total xylenes, and 240 mg/kg ethylbenzene TPH as gasoline was reported at a concentration of 35 mg/kg in sample NCS-5, collected from under the product delivery piping approximately 6 feet east of the tank Other organic compounds reported above laboratory detection limits in sample NCS-5 were ' 0 13 mg/kg toluene The three isomers of xylene were reported as below detection limits Each of the three soil samples was analyzed for 1,2-dibromoethane (ethylene dibromide) and concentrations were reported as below detection limits in each sample ' Total lead was reported above laboratory detection limits in each of the soil samples Total lead concentrations ranged from 22 1 to 64 2 mg/kg Organic lead was reported as below laboratory ' detection limits in each of the soil samples Reported lead concentrations are below California Code of Regulations hazardous material classification criteria Total threshold limit concentration (TTLC) ' for inorganic lead is 1,000 mg/kg However, the total lead values of 64 2 mg/kg for sample NCS-5 is greater than 10 times the soluble threshold limit concentration (STLC) level of 5 mg/kg SAMP[_AN 162 044-0162UTATR1-W/06M 6 1