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Table 1 <br /> Second Quarter 2003 Groundwater Monitoring and Analytical Data <br /> 7-Eleven Store#21756 <br /> 653 East Yosemite Avenue <br /> Manteca CA <br /> Well IDI Ethyl- Dissolved <br /> Elevation Date Benzene Toluene Benzene Xylene TPHg MtBE TBA DIPE ETBE TAME Notes Oxygen DTW SPT WTE <br /> (TOC) (pg1L) (pglL) I (pglL) (pglL) (pglL) I (pg1L) (pglL) (pg1L) (pglL) (pglL) (mglL) (feet) (feet) (feet) <br /> MW-1 04/17/03 <2 0 <2 0 <2 0 <2 0 <200 - 720 <20 <2 0 <2 0 33 03 2038 000 1647 <br /> 3685 <br /> MW-2 04/17/03 <0 50 <0 50 <0 50 <0 50 <50 076 <5 0 <0 50 <0 50 <0 50 17 21 13 000 1659 <br /> 3772 <br /> MW-3 04/17/03 <0 50 <0 50 <0 50 <0 50 <50 <0 50 <5 0 <0 50 <0 50 <0 50 30 1979 000 1652 <br /> 3631 <br /> MW-4 04117/03 <0 50 <0 50 <0 50 <0 50 <50 <0 50 <5 0 <0 50 <0 50 <0 50 28 1774 000 1639 <br /> 3413 <br /> Explanation <br /> TPHg=Total petroleum hydrocarbons-as-gasoline TAME=Tert-amyl-methyl ether pg/L=micrograms per liter <br /> MtBE=Methyl-tert-butyl ether DTW=Depth to water mglL=milligrams per liter <br /> TBA=Tert-butanol SPT=Separate-phase hydrocarbon thickness ft=feet <br /> WE=Dusopropyl ether WTE=Water table elevation —=Not sampled/not measured <br /> EtBE=Ethyl-tert-butyl ether TOC=Top of casing elevation in feet above mean sea level <br /> Note All samples analyzed using EPA Method 8260B <br /> 7-Elevenl7-11 StoreX14063kTables\21756 03-2Q xls Page 1 of 1 <br />