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Tao - • <br /> Groundwater Analytical Results-Oxygenate Compounds <br /> Tosco (Circle K) Unit#1205 <br /> 16470 Cambridge Street <br /> Lathrop, Califorma <br /> Well ED Date Methanol Ethanol TBA MTBE DIPE ETRE TAME <br /> (Ppb) (Ppb) WN (ppb) (PPb) WN (ppb) <br /> MW-1 10/08/98 7,100 NDi 320 3,400 NDi ND' 22 <br /> 07/16/99 -- NDi NDi 820 NDi ND' ND <br /> MW-2 10/08/98 6,800 ND' 620 4,000 NDi NDi 76 <br /> 07/16/99 -- ND' NDi 560 NDi NDt NDi <br /> MW-3 10/08/98 ND ND ND ND ND ND ND <br /> 07/16/992 — ND ND ND ND ND ND <br /> MW4 10/08/98 ND ND ND ND ND ND ND <br /> 07/16/993 — ND ND ND ND ND ND <br /> Groundwater laboratory results were compiled from reports prepared by Pacific Environmental Group, Inc <br /> TBA = Tertiary Butyl Alcohol <br /> MTBE = Methyl Tertiary Butyl Ether <br /> DIPE = Di-isopropyl Ether <br /> ETBE = Ethyl Tertiary Butyl Ether <br /> TAME = Tertiary Amyl Methyl Ether <br /> ppb = Parts per billion <br /> ND = Not Detected <br /> I Detection limit raised Refer to analytical results <br /> 2 Analyzed past hold time by 20 minutes <br /> 3 Analyzed past hold time by 59 minutes <br /> EPA Method 8260 for Oxygenate Compounds <br /> 1205 x1s/180183 1 As of 07/16/99 <br />