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�R w w w w i i 1• i i i i i i i i i i <br /> Ak <br /> OZONE SPARGE GROUNDWATER ANALYTICAL DATA <br /> Farmer Chevron Service Station 9-0557 <br /> 139 South Center Street <br /> Stockton,California <br /> Date Well Ground <br /> Well Sample Head Depth water Ethyl- Total <br /> ID Collected Elevation to Water Elevation TPHd TPHmo TPHg Benzene Toluene benzene Xylenes MtBE TBA 1,2 DCA EDB Methanol Ethanol <br /> (ft MSI) (ft bgs) (ft mal) WL) 040 (ugh) WA) MVL) OWL) 09fl-) (119,L) 41WL) OdL) 41A) 01WL) WA) <br /> MW-11 3/12/20021 11.63 22.44 -10.81 65 <1,000 <50 <0.5 <0.5 <0.5 <0.5 <0.5 54 <0.5 <0-5 <200 <50 <br /> 4/15/2002 11.63 22.31 -10.68 <50 <1,000 <50 <0.5 <0.5 <0.5 <1.5 <2 <100 <2 <2 <1,000 <500 <br /> 5/10/20023 11.63 NA NA <50 <0.5 <0.5 <0.5 <0.5 3 <5 <0.5 <0-5 <200 <50 <br /> 6!5120023 11.63 <50 <400 <50 <0.5 <0.5 <0.5 <0.5 1 <5 <0.5 <0.5 <200 <50 <br /> 7/15/20022 11-63 23.33 -11.70 <50 <400 <50 <0.5 <0.5 <0.5 <0.5 <2 <100 <2 <2 <1,000 <500 <br /> 8/12/20023 11.63 23.64 -12.01 <50 <400 <50 <0.5 <0.5 <0.5 <0.5 0.9 <5 <0.5 <0-5 <200 <50 <br /> 9/13/20023 11.63 24.20 -12.57 <50 <400 <50 <0.5 <0.5 <0.5 <0.5 1 <5 <0.5 <0.5 <200 <50 <br /> 10!18120022 11.63 24.62 -12.99 <50 <400 <50 <0.5 <0.5 <0.5 <0.5 <2-0 <100 <2 <2 <1,000 <500 <br /> Ym 101V20022 11.63 <50 <400 <50 <0.5 <0,5 <0.5 <0.5 <0.5 <5 <0.5 <0.5 <200 <50 <br /> 11/7/20023 11.63 <50 <400 <50 <0.5 <0.5 <0.5 <0.5 0.5 <5 <0.5 <0.5 <200 <50 <br /> 12J3/20023 11.63 24.73 -13.10 57 <400 <50 <0.5 <0.5 <0.5 <0,5 <0-5 <5 <0.5 <0.5 <200 <50 <br /> 1!3!20032 11,63 140 <400 <50 <0.5 <0.5 <0.5 <0.5 <0-5 <5 <0.5 <0.5 <200 <50 <br /> Explanations: <br /> mgt = micrograms per liter <br /> msl = mean sea level <br /> bgs = below ground surface <br /> TPHg = total petroleum hydrocarbons quantified as diesel <br /> TPHmo = total petroleum hydrocarbons quantified as motor oil <br /> TPHg = total petroleum hydrocarbons quantified as gasoline <br /> MtBE = methyl tertiary butyl ether <br /> TBA = tertiary butyl alcohol <br /> RIPE di-isopropyt ether <br /> TAME - tertiary amyl methyl ether <br /> 1,2 DCA _ 1,2-clichlofethane <br /> EbB = 1,2-dibronwethane(ethylene dibromide) <br /> ELBE = ethyl tertiary butyl ether <br /> NA = not analyzed for this constituent <br /> well parameter was not taken <br /> Notes: <br /> 1 = Samples were collected by SECOR prior to iniliaUon of ozone sparging(baseline samples), Wells were not purged prior to collection of samples. Ozone sparging was initiated on March 29,2002. <br /> 2 = Samples were collected by Gettier-Ryan,Inc.as part of regular quarterly groundwater monitoring event. Weds were purged prior to sample collection Analytical results tot these samples are included in Gettler-Ryan's <br /> 'Groundwater Monitoring&Sampling Report'for the respective event <br /> 3 = Samples were collected by SECOR- Wells were not purged priorto oollection of samples. <br /> 4 = Samples also analyzed for RIPE,TAME,and ErsE. Resufis were nondetect. See analytical repots for sample detection limits- <br />' I tChevrm'90557lrableslOS Table Concur vs Time.xls 4 of 4 <br />