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r r � r r r r rr r r r � r � ■r � � <br /> i <br /> Table 1A <br /> Historical Groundwater Analytical Results <br /> 7-Eleven Store#21756 <br /> 853 E Yosemite Avenue <br /> Manteca Caldomia <br /> Well IDI Ethyl- MTBE MTBE Dissolved <br /> Elevation Benzene Toluene Benzene Xylenes TPH-G 8020 8260 TSA DIPE ETBE TAME 1,2-DCA EDB Oxygen DTW SPT WTE <br /> (TOC) Dale (pgIL) (pg/L) (pg/L) (pg/L) (NgIL) (pgfL) (NgtL) (pgfL) (pts) (pgIL) (pgrL) (pgfL) (NgIL) (mg1L) (feet) (feet) {feet) <br /> MW-3 <br /> 10/04/01 <0 5 099 <0 5 17 <50 -- <5 <20 <5 <5 <5 — -- 24 21 50 000 1481 <br /> 01!07!02 <0 5 1 056 29 <50 -- <5 <20 <5 <5 <5 - — 21 1827 000 1804 <br /> 04/08/02 <0 5 <0 5 <0 5 <0 5 <50 -- <0 5 <5 <0 5 <0 5 <0 5 — -- 19 1920 000 1711 <br /> 07/01/02 <0 5 <0 5 <0 5 061 <50 <5 <0 5 <5 <0 5 <0 5 <0 5 -- -- 12 21 16 000 1515 <br /> MW-4 <br /> 04/08/02 <0 5 105 <0 5 <0 5 <50 <0 5 <5 <0 5 1 <05 1 <0 5 - — 19 1 1712 1000 <br /> 07/01/02 <0 5 <0 5 <0 5 078 <50 <5 <0 5 <5 <0 5 <05 1 <0 5 — -- 1 1 6 1 1916 1000 -- <br /> Explanation <br /> —=Not available/not sampled ETBE=ethyl-tertiary-butykether WTE=Water table elevation Ng/L=Micrograms per liter <br /> TPH G=total petroleum hydrocarbons-as-gasoline TAME=tertiery-amyl-methyl ether TOC=Top of casing elevation(in feet above mean sea level) mg1L=Milligrams per liter <br /> MTBE=methyl tort butyl ether 1 2-DCA=1 2 dichloroethane DTW=Depth to water <br /> TBA=terhery butanol EDB=1 2-dibromoethane SPT=Separate-phase hydrocarbon thickness <br /> DIPE=dusopropyl ether <br /> `Method Bank Contamination The associated method blank containing the target analyte of a reportable level <br /> I <br /> i <br /> 7-11121756 tbl As 2 of 2 8-15-02 <br />