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UST CIosure Report <br /> ABF Freight System,Inc <br /> Manteca,California Page 6 <br /> 4.3 Sampling Equipment Decontamination <br /> All sampling equipment and tools that came in contact with sample media were decontaminated <br /> by washing with water containing Alconox detergent, followed with a deionized water rinse, and <br /> second deionized water rinse All nnsate water generated during the sampling equipment <br /> decontamination activities was disposed to the sanitary sewer <br /> 5.0 RESULTS OF CHEMICAL ANALYSES <br /> 5.1 Soil <br /> The soil samples were analyzed for TPH-D (total petroleum hydrocarbons as diesel) and BTEX <br /> (benzene, toluene, ethylbenzene, and xylenes) All soil samples analyzed yielded non-detectable <br /> levels of BTEX THP-D levels were found to range from <5 0 to 220 mg/kg Copies of the <br /> analytical reports are presented in Appendix 3 Analytical results for soil samples collected from <br /> the excavation area are presented in the following table <br /> Table 1. <br /> Soil Sample Analytical Results <br /> Date TPH-D Benzene Toluene Ethylbenzene Xylenes <br /> Sample Sampled (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) <br /> Identification <br /> TI-NW-1034" 3/20/98 <0 5 <0 005 <0 005 <0 005 <0010 <br /> • T1-SE-10'4"#2 3/20/98 <0 5 <0 005 <0 005 <0 005 <0010 <br /> D1-4' 3/20/98 <0 5 <0 005 <0 005 <0 005 <0010 <br /> SP 1-S 3/20/98 220 <0 005 <0 005 <0 005 <0010 <br /> SPI-N 3120/98 35 <0 005 <0 005 <0 005 <0010 <br /> mg/kg=milligrams per kilogram <br /> TPH-D=Total Petroleum Hydrocarbons as Diesel <br /> 5.2 Groundwater <br /> The groundwater samples were also analyzed for TPH-D and BTEX One sample analyzed <br /> yielded non-detectable levels of BTEX The other sample was found to contain from 2 to 27 <br /> µg/L of BTEX THP-D levels were found to range from 41 to 53 mg/L in both samples Copies <br /> of the analytical reports are presented in Appendix 3 Analytical results for groundwater samples <br /> collected from the excavation area are presented in the following table <br /> Table 2 <br /> Groundwater Sample Analytical Results <br /> Sample Date TPH-D Benzene Toluene Ethylbenzene Xylenes <br /> Identification Sampled (mg/L) (pg/L) (µg(L) (Ag/L) (pg/I.) <br /> Excavation 11' 3/18/98 53 <2 5 <2 5 <2 5 <5 0 <br /> Pit Water 3/20/98 41 <0 005 2 2 27 <br /> mg/L=milligrams per Liter <br /> µglL=micrograms per Liter <br /> . TPH-D=Total Petroleum Hydrocarbons as Diesel <br /> \\SERVE.RIC-DRIVE\PRO]ECTSU732\Plans and Reports\UST Closure Report doe May 21, 1998 <br />