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Table 1 <br /> Second Quarter 2003 Groundwater Monitoring and Analytical Data <br /> 7-Eleven Store#17647 <br /> 1048 West Yosemite Avenue <br /> Manteca CA <br /> Well ID! Ethyl- 1,2- Dissolved <br /> ElevationDate Benzene Toluene Benzene Xylene TPHg MtBE TBA DIPE ETBE TAME DCA EDB Notes Oxygen DTW SPT WTE <br /> (TOC) (pg1L) (pglL) (pgfL) (pglL) (p L) (pglL) (pglL) (pglL) (pglL) (pglL) (pg (pg1L) (mglL) I (feet) (feet) (feet) <br /> MW-1 04/17/03 <0 50 <0 50 <0 50 <0 50 <50 <0 50 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 20 15 75 0 00 15 39 <br /> 31 14 <br /> MW-2 04/17/03 <0 50 <0 50 <0 50 <0 50 <50 <0 50 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 44 1518 000 1531 <br /> 3049 <br /> MW-3 04/17/03 <0 50 <0 50 <0 50 <0 50 <50 056 <50 <0 50 <0 50 <0 501. <0 50 <0 50 1 0 7 15 06 000 15 30 <br /> 3036, <br /> Explanation <br /> TPHg=Total petroleum hydrocarbons-as-gasolrne 1 2-DCA= 1 2-Dichloroethane pq/L=micrograms per liter <br /> MtBE=Methyl-tert-butyl ether EDB=1 2-Dibromoethane mglL=milligrams per liter <br /> TSA=Tert-butanol DTW=Depth to water ft=feet <br /> DIPE=Dusopropyl ether SPT=Separate-phase hydrocarbon thickness —=Not sampledinot measured <br /> EtBE=Ethyl4eft-butyl ether WTE=Water table elevation NIA=Not Applicable <br /> TAME=Tort-amyl-methyl ether TOC=Top of casing elevation in feet above mean sea level <br /> Note All samples analyzed using EPA Method 82606 <br /> i <br /> 7-Elevenl7-11 Store1140631TableW 7647 03-2Q As Page 1 of 1 <br />