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' �r �r r r r r rr r r r r� r �r r ■r rr <br /> Table 2 <br /> Historical Groundwater Monitoring Data <br /> 7-Eleven Store#20632 <br /> 4627 DaVinci Drive <br /> Stockton,Calrfomla <br /> Welf fOtl ethyl- MTBE 1lssuitr <br /> IE:I6VOWn Bate Donxetne TOluett Melte Xylene TP"-G 8020 8284 TBA DIPS ,TBR TAMIE Oxygen DTW SPT WE0 <br /> (Y I (OW t111,W it+en.1 (WW (IL-1 tpw #tK1A.) 44L) ((L1 411+rlw) 0104 i0wo F"4 <br /> 282 10117797 2.8 11.6 38 110 820 IC50 820 0,00 -5.47 <br /> 03/22198 ND 4 18 31 120 -• ND ND ND ND ND 019 655 000 -373 <br /> 061tSM 403 1111 8.3 t8 <i 410 <100 <5 <5 <5 10 6.72 000 390 <br /> 08/25/98 06 <0 3 936 <0 6 <50 -- <5 <50 <5 <5 <5 -- 756 000 -474 <br /> 12r2M <0 3 1.84 2.38 8.8 <50 «- <5 <20 <5 <5 <5 0 4 16S OW 4X3 <br /> 02/17/99 <0 5 <0 5 27 <0 5 <50 <5 <5 <20 <5 <5 <5 07 604 000 -322 <br /> =10 <0.3 1.08 3.41 18.6 <50 «« <5 .0 <5 <5 <5 0.9 7.3D IRM -4.48 <br /> 08/28/99 <0 3 <0 3 <03 <0 6 50 -- <5 <20 <5 <5 <5 09 795 000 -513 <br /> MW-4 <br /> 256 IOA7/97 810 780 320 2,800 20,OW 18,000 23,000 -. •« *_ +- U4 MOO -SAS <br /> 03/22/98 81 56 32 27 2,600 -- 281000 ND ND ND ND 030 627 000 -369 <br /> 0/15/618 700 20 470 73 22,000 « 17,000 <5,000 <2S4 <250 <250 2.1 647 aSO <br /> 08/14/98-Well Abandoned <br /> MW-5 <br /> 257 02117199 85 <1 30 110 B90 49 62 <20 45 <5 <5 07 519 0;0D 4.22 <br /> 05/21/99 242 0.86 141 172 220 -- 188 <20 <5 <5 <5 09 7 QO 000 -443 <br /> i < <br /> Exolanatlan <br /> —=Not avaihablelnot sampled TOC=Top of casing elevation(in feet above mean sea level) <br /> TPH-G=Total petroleum hydrocarbons-as-gasoline DTW=Depth to water <br /> MTBE=Methyl-tert-butyl ether SPT=Separate-phase hydrocarbon thickness <br /> TBA=tert-Butanol WTE=Water table elevation <br /> DIPE=Dilsoprophyl ether pg/L=Micrograms per Itter <br /> ETBE=Ethyt-tert-buy ether mg&=Milligrams per liter <br /> TAME=ten Amylmsthyl ether <br /> 2M27B1 WK4 Page 2 of 2 IT CORPORATION <br />