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Table 2 <br /> Groundwater Elevation and Analytical Data <br /> Tosco(Circle K)Store 1205 <br /> 16470 Cambridge Street <br /> Lathrop,CA <br /> Well Depth to Groundwater TPH as Ethyl- Total <br /> Well Date Elevation Water Elevation Gasoline Benzene Toluene benzene Xylenes MtBE UPE ETBE TAME TBA Ethanol Methanol <br /> Number Gauged feet, MSL) feet, TOC feet, MSL b b b b b b b b b b b b <br /> GP-1 ---------- ---------- ---- ------ 52,000 56 2,400 1,700 15,000 61 ND ND ND ND NO NO <br /> MW- 1 10/08/98 1762 1127 635 29,000 180 2,500 3,200 13,000 3,400 ND ND 22 320 NO 7100 <br /> MW-2 10/08/98 1750 11 17 633 18,000 210 100 1,600 1,700 4,000 ND ND 76 620 NO 6800 <br /> MW-3 10/08/98 1816 1167 649 11,000 14 34 580 560 NO ND ND ND ND NO ND <br /> MW-4 10/08198 1775 1129 646 7,600 66 23 430 860 NO NO ND ND NO ND ND <br /> MSL = Mean sea level <br /> TOC =Top of casing <br /> TPH =Total petroleum hydrocarbon <br /> DIPE = Di-isopropyl ether <br /> ETBE = Ethyl tertiary-butyl ether <br /> TBA =Tertiary-butanol <br /> TAME =Tertiary-amyl methyl ether <br /> MtBE = Methyl tertiary-butyl ether <br /> ppb = Parts per billion <br /> NO =Not detected <br /> ---------- = Not applicable <br /> Note All analyses by EPA Method 8260 <br /> See certified analytical reports for detection limits <br /> 3118199 <br /> 911005 1 B/rable 1 21TABLE2 <br />