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Tablie <br /> Summary of Ground Water Monitoring and Analyses <br /> Former Mobil Oil Bulk Plant 04-343 <br /> 500 East Grantline Road <br /> Tracy, Califomia <br /> well Data of Casing Depth to Ground TPH-0 TPH-D Benzene Toluene Ethyl- Total Fecal Lead Phenol Diethyl 2-HEX Lab <br /> ID Samplrng Elevation Water Water (ppb) (ppb) (ppb) (ppb) benzene Xylenes colotonn (ppb) (ppb) Phthalate (ppb) <br /> (feet) (feet) Sefaeton (ppb) (ppb) (ppb) (ppb) <br /> AW-10 04/02183 31.48 10.10 21.39 ND<50 92 0.54 ND<0.5 ND<0.5 ND<0.5 - - - - SEQ <br /> h05VI93 10.14 21.34 NDwO ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 - - --- - - SEQ <br /> h � <br /> AW-11 04102193 81.00 9.58 21.42 ND<50 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 - -- - - - SEQ <br /> 05/27183 9.62 21.39 ND<50 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 - - - - - SEQ <br /> AW-12 041I021g3 31.58 10.00 21.56 ND<50 63 ND<0.5 ND<0.5 ND<0.5 ND<0.5 - - - - SEQ <br /> 0527183 10.08 21.48 ND<50 ND<50 9.6 ND<0.5 ND<0.5 ND<0.5 - - - - - $EQ <br /> I <br /> i <br /> h <br /> I NOTES: ppb = parts per billion W Top of casing elevations were surveyed In reference to a rallroad spike set in an <br /> TPH-0 - total petroleum hydrocarbons as gasoline island on the approArnala centarline of East Grantline Road 19.5 feet west torn to <br /> TPH-D - btal petroleum hydrocarbons as diesel oentarllne of the railroad spur tracks. <br /> ND = not detected at deted lon limits stated in official laboratory reports AU watis resurveyed on April 7,1992 b Land I <br /> y mprovementServices.Apnl7,and24, <br /> --- - not measurekirnot analyze0not applicable 1992 data reflect resurveyed elevations. <br /> MEX - 244exen-l-ol(E) <br /> ' - sample reported sa not matching typical gasoline patten <br /> - sampled reported as not appearing to contain gasoline <br /> AEL = American Erwironmantal Laboratories,Inc. <br /> SAL - Superior Anall+tical Laboratorkm(no. <br /> SEQ - Sequoia Analytical <br /> Page 6 of 5 30-13&aW TABLE Gn4M <br />