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Table 9 <br /> Groundwater Monitoring Data <br /> April 10,2002 <br /> E <br /> 7-Eleven Store No 20632 <br /> 4627 DaVinci Drive <br /> Stockton,California <br /> Well !Di Ethyl- MTBE MTBE DissolvedElevation Benzene Toluene Benzene Xylene TPH-G 8020 8260 TBA DIPE ETBE TAME Oxygen DTl�f SPT' WTE � <br /> (TOC) Date (jig/L) (1a91L) (1191 ) (lig/L) (lag/t-) (pgIL) (pg/L) (p91L) (N9/L) (pg/L) (VgIL) (mg!!_) (feet) (feet) (feet) <br /> MW 1 1731 04110102 <0 5 073 <0 5 <05 <50 <5 i 9 <5 <0 5 <0 5]___<O 5 0 8 6 02 [_0-00 <br /> MW-2 <br /> 2 82 04/10/02 <1 <1 <1 <1 <100 2,200 9,900 <620 <62 j <62 <62 10 7 30 000 -448 <br /> MW-3 — <br /> 2 82 04/10/02 <5 14 180 110 3,800 <50 6 <5 <0 5 <0 5 1 <0 5-1-0 9 720 1 000 -4 38 <br /> MW4 <br /> Well destroyed 8198 <br /> MW-4R <br /> l <br /> 04/10/02 330 31 120 480 3,700 x,200 5,900 230,000 <50Q <500 <500 .61 6 72 0 00 – <br /> 2 57 04110/02 20 <0 5 <0 5 <0 5 92 85 80 <25 <2 5 1 <2 5 j <2 5 1 2 6 96 10 00 4 39 <br /> MW-6 <br /> 04/10/02 <0 5 <0 5 <0 5 <0 5 <50 <5 1 1 <5 <0 5 <0 5 <0 5 60 670 000 -- <br /> MW-7 <br /> 04110102 <5 __711 <5 S 2 <500 13,000 22,000 <5,000 <500 <500 <500- – 5 7 7 20 0 QO -- <br /> EXPLANATION <br /> TPH-G=Total petroleum hydrocarbons-as-gasoline SPT=Separate-phase hydrocarbon thickness <br /> MTBE=Methyl4ert-butyl-ether WTE=Water table elevation <br /> r TBA=Tert-Butanol pg/L=micrograms per liter <br /> RIPE=Di-isopropyl ether mg1L=Milligrams per liter <br /> ETBE=Ethyl-tertiary-butyl-ether --=Not avadablelnot sampled <br /> TAME=Tertiery-amyl-methyl ether TOC=Top of casing elevation(in feet above mean sea level) <br /> DTW=Depth to water <br /> 7-11120632 thl xis 1 of 1 05-31-02 <br />