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i • J <br /> �1 of 1 <br /> Table 2 _ <br /> Groundwater Analytical Results <br /> Tosco Service Station No 4409 <br /> 1502 North EI Dorado Street <br /> Stockton,California <br /> Analyzed by EPA Methods 8015M and 8021E Analyzed by EPA Method 8260E <br /> Depth TOC Groundwater Ethyl- Total 12- <br /> Sample Date To Water Elevation Elevation TPHG Benzene Toluene benzene Xylenes MtBE MtBE DIPE EtBE TAME TBA DCA EDB Ethanol <br /> ID Date (feet,bgs) (feet,MSL) (feet,MSL) (µgA) (9911) (9911) (49l1) (µgA) (pgA) (9911) 649A) (119/1) (99A) (µg/1) (µgA) (4g11) (µgA) <br /> MW-1 10/10/01 3019 1144 -1875 <50 <0 50 <0 50 <0 50 <0 50 <5 0 <2 0 <2 0 <2 0 <2 0 <100 <2 0 <2 0 <1,000 <br /> MW-2 10/10/01 3168 1268 -19 <50 <0 50 <0 50 <0 50 <0 50 <5 0 <2 0 <2 0 <2 0 <2 0 <100 <2 0 <2 0 <1,000 <br /> MW-3 10/10/01 31 00 1202 -1898 <50 <0 50 <0 50 <0 50 <0 50 91 12 <2 0 <2 0 <2 0 <100 <2 0 <2 0 <1,000 <br /> MW-4 10/10/01 3021 11 49 -1872 <50 <0 50 <0 50 <0 50 <0 50 64 90 <2 0 <2 0 <2 0 <100 <2 0 <2 0 <1,000 <br /> MW-5 10/10/01 3098 1217 -1881 8,100' <10 12 340 560 <100 <2 0 <2 0 <2 0 <2 0 <100 <2 0 <2 0 <1,000 <br /> MW-6 10/10/01 3045 11 62 -1883 2,3002 130 45 70 58 <50 <2 0 <2 0 <2 0 <20 <100 <2 0 <2 0 <1,000 <br /> MW-7 10/10/01 3027 1140 -1887 <50 <0 50 <0 50 <0 50 16 <5 0 <2 0 <2 0 <2 0 <20 <100 <2 0 <2 0 <1,000 <br /> MW-8 10/10/01 3062 1261 -1801 2,3002 600 22 78 19 <100 <5 0 <5 0 <5 0 <5 0 <250 <5 0 <5 0 <2,500 <br /> MW-9 10/10/01 2698 1087 -1611 22,000' 490 260 1,100 3,600 <200 <25 <25 <25 <25 <1,200 <25 <25 <12,000 <br /> MW-10 10/10/01 3093 1130 -1963 9,200' <20 <20 94 230 <200 <50 <5 0 <5 0 <5 0 <250 <5 0 <5 0 <2,500 <br /> TB-LB 10/10/01 - -- -- <50 <0 50 <0 50 <0 50 <0 50 <5 0 -- -- -- -- __ -- <br /> Explanation <br /> MSL=mean sea level D1PE=Di-isopropyl Ether <br /> TOC=top of casing EtBE=Ethyl Tertiary Butyl Ether <br /> µgA=micrograms per liter TAME=Tertiary Amyl Methyl Ether <br /> <=less than laboratory method reporting limit 1,2-DCA=1,2-Dichloroethane <br /> MtBE= Methyl-tertiary-butyl ether EDB=1,2-Dibromoethane <br /> TPHg=Total Petroleum Hydrocarbons as Gasoline ' =Chromatogram Pattem Weathered Gasoline C6-C12 <br /> DIPS=Di-isopropyl Ether 2=Chromatogram Pattem Gasoline C6-C12 <br /> 11Tosco Marketing1440MAsmtTblslTable 2 <br />