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1 of 2 <br /> Table 3 <br /> Groundwater Analytical Data <br /> Tosco(Former Unocal)Service Station 5417 <br /> 1700 East Yosemite Avenue <br /> Manteca California <br /> Well GW TPH as Ethyl- Total Tert- <br /> Sample Date Elevation Elevation Gasoline Benzene Toluene benzene Xylenes MtBE DIPE ETBE TAME Butanol Methanol Ethanol <br /> ID Sampled Feet(TOC) Feet(TOG) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) <br /> GP-1 07/23/98 ——- ---- NO NO ND ND ND NO ND NO ND ND ND NO <br /> GP-2 07/24/98 _-------- ______ 4,700 NO ND ND 13 NO NO ND ND ND ND ND <br /> GP-3 07/24/98 ---------- ---------- 7 400 NO ND 170 210 200 ND ND ND 360 ND ND <br /> GP-4 07/24/98 -------- --------- ND ND ND NO NO NO NO ND NO ND ND ND <br /> GP-5 07/24/98 ------- - --------- ND NO ND NO 081 NO ND ND NO ND NO NO <br /> GP-6 07/23/98 --------- ________ ND NO NO NO NO NO ND ND NO ND NO NO <br /> TPH =Total Petrleum Hydrocarbon <br /> ppb =part per billion <br /> ND =Not Detected <br /> MtBE =Methyl-tertiary-Butyl Ether <br /> DIPE =Dusopropyl ether <br /> ETBE =Ethyl-tertiary-Butyl Ether <br /> TAME =Tert-Amyl Methyl Ether <br /> TOC =Top of Casing,measured relative to Mean Sea Level <br /> — -— =Not Applicable <br /> Note =See certifed analytical reports for reporting limits methods and results <br /> 911-007 1BITABLE 3 September 22 1998 <br /> I <br />