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Table 3 <br /> Groundwater Elevation and Analytical Data <br /> Tosco Service Station #1205 <br /> 16470 Cambridge Street <br /> Lathrop,California <br /> EPA Method 8260 EPA Method 8260 <br /> Well Depth Grouner TPH as Ethyl- <br /> Well Date Elevation to Water ElevGasoline Benzene Toluene benzene Xylenes MtBE DIPE TAME EtBE TBA 1 2-DCA EDB Ethanol <br /> Number Sampled (feet,amsl) (feet TOC) (feet,�emsl) (LLO) (µg/l) ( } (µ9l!) (µ ) (µg4) (µglf) (µ91t) -(W) (pg/]) (µ ) (µg/1) (µg/1) <br /> Geoprobe Water Samples <br /> GP-1 6/5/2002 104 17,000 44 260 830 2,500 <10 <10 <10 <10 <100 <10 <10 <1,000 <br /> GP-2 6/5/2002 97 16,000 170 <25 1,800 360 <25 <25 <25 <25 <250 <25 <25 <2,500 <br /> GP-3 6/5/2002 117 4,100 <10 <10 310 140 <10 <10 <10 <10 <100 <10 <10 <1000 <br /> GP 4 6/5/2002 121 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <0 50 <0 50 <50 <br /> GP-5 6/5/2002 — 113 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <0 50 <0 50 <50 <br /> GP-6 6/21/2002 10 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <20 <0 50 <0 50 <40 <br /> GP-7 6/21/2002 112 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <20 <0 50 <0 50 <40 <br /> GP 8 6/21/2002 10 15,000 110 <50 740 1,300 230 <50 <50 <50 <2,000 <50 <50 <4,000 <br /> GP-9 6/21/2002 10 <50 <0 50 <0 50 096 12 22 <0 50 <0 50 <0 50 <20 <0 50 <0 50 <40 <br /> r <br /> Monitoring Well Samples <br /> MW 10 11/2112002 1531 1255 276 <50 <0 50 054 <0 50 1 1 <2 0 <0 50 <0 50 <0 50 <5 0 <0 50 <0 50 <50 <br /> MW 11 11/21/2002 1418 11 67 251 <50 <0 50 1 1 <0 50 1 6 <2 0 <0 50 <0 50 <0 50 <5 0 <0 50 <0 50 <50 <br /> MW 12 11/2112002 1425 11 84 241 <50 13 42 280 1,100 1,300 <0 50 98 <0 50 250 <0 50 <0 50 <50 <br /> MW-13 11/21/2002 1386 1149 237 <50 <0 50 098 <0 50 0.50 <2 0 <0 50 <0 50 <0 50 <5 0 <0 50 <0 50 <50 <br /> MW-14 11/21/2002 1432 1208 224 <50 <0 50 063 <0 50 062 17 <0 50 <0 50 <0 50 <50 <0 50 <0 50 <50 <br /> MW-15 11/21/2002 1476 1256 220 <50 <0 50 14 <0 50 17 <2 0 <0 50 <0 50 <0 50 17 <0 50 <0 50 <50 <br /> c <br /> Notes <br /> TOC=Top of Casing <br /> amsl=above mean sea level <br /> DHS/LUFT=California Department of Health Services/Leaky underground fuel tank method <br /> TPH=Total Petroleum Hydrocarbons <br /> MtBE=Methyt tertiary butyl ether <br /> DIPE=Di-isopropyl ether <br /> TAME=Tert-amyl methyl ether <br /> ELBE=Ethyl tertiary butyl ether <br /> TBA=Tertiary butyl alcohol <br /> 1,2-DCA=1 2-Dich[oroethane <br /> EDS=Ethylene dibromide or 1,2-Dibromoethane <br /> (µg11)=micrograms per liter <br /> <=Denotes less than Laboratory Reporting Limits <br /> Tosco marketing112051tableslwell instalRtable3 As Page 1 of 1 <br />