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i <br /> • TaTle 1 - <br /> Page 2 of 2 <br /> Groundwater Elevation and Analytical Data <br /> Former ARCO Service Station#4493 <br /> 205 N Center St,Stockton,CA <br /> Well Depth Groundwater Groundwater Ethyl- Xylenes MtBE MtBE <br /> Well Date Elevation to Water Devahon Elevation TPHg Benzene Toluene benzene (total) (8020) (8260) DO <br /> Number Sam led it,MSL ft,TOC ft,MSL Change ftb b b b b b b m L <br /> MW-6 6/19100 P 1203 1298 -096 -- <50 275 <0 500 <0 500 <0 500 <2 50 <2 0 209 <br /> 9119100 P 1365 -162 -067 <50 119 <0 500 <0 500 <0 500 <2 50 <2 0 0 6 <br /> 11/30/00 P 1488 -2 85 -123 <50 0 0 694 <0 500 <0 500 <0 500 -- <2 00 121 <br /> 9113101 P 1598 -395 -110 <50 <0 50/<2 0* <0 50/<2 0* <0 5W<2 0* <0 5W<2 0* — QA 088 <br /> MW-6 6/19100 P 1326 13 81 -055 -- <60 187 <0 500 0 523 2 34 171 144 183 <br /> 9119/00 P 1466 -130 -0 75 <50 130 <0 500 <0 500 <0 500 119 102 07 <br /> 11/30/00 P 1579 -253 -1 23 <50 0 <0 500 <0 50012 08* <0 500 <0 60018 00* -- 412 0 64 <br /> 9113101 P 13 60 -034 219 <50 <0 50/<2 0* <0 501d 0* <0 50/<2 0* <0 50/4 0* -- Q.0 078 <br /> MW-7 6/19100 P 11 07 11 87 -0 80 -- <50 <0 500 <0 500 <0 500 <0 500 <2 50 <2 0 178 <br /> 9/19/00 P 1259 -152 -072 <50 <0 500 <0 500 <0 500 <0 500 <2 50 <2 0 10 <br /> 11/30/00 P 1383 -276 -124 <50 0 <0 500 <0 500/3 80* <0 500 <0 50018 96* -- 234 062 <br /> 9113104 P 1217 -110 1.66 <30 4.W 0* <0 50/<2.0* <0.501<2 0* <0 501<2,0* -- <2 0 109 <br /> Notes <br /> TPHg=Total petroleum hydrocarbons as gasoline <br /> MtBE=Methyl tart-butyl ether <br /> DO=Dissolved oxygen <br /> ft=feet <br /> MSL=mean sea level <br /> TOC=top of casing <br /> ppb=parts per billion <br /> mg/L=milligrams per liter <br /> PMP=purged/not purged <br /> =analyzed using EPA Method 8260 <br /> <or ND=below given laboratory detection limit <br /> I <br /> 8020=Analyzed by EPA Method 8020 <br /> 8250=Analyzed by EPA Method 8260 <br /> - =not measured or analyzed <br /> I <br /> ProiscWARCO/4493/Reports/Tables/gwtables4493 As <br /> I <br />