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0 0 <br /> Table 1 <br /> Groundwater Monitoring Data <br /> 1995 to Present <br /> ARCO Service Station No. 548, 1612 Hammer Lane, Stockton, California <br /> Well Elevation Static Top Elevation Ground►►ater <br /> Sample of Top Water of of Flu►► Ethyl- Total <br /> Number Date of Casing Leel Screen Ground►►ater Dire(-tion TPHG Benzene Toluene benzent X lents MTBE [11 Observations <br /> VW-51) 12/30/98 NM Well not located Inaccessible becduse of soil stockpites <br /> VW-51) 03/31/99 NM 2565 -- ELSE Not scheduled for sampling No I-P,Yes S, Yes O <br /> VW-51) 06/28/99 NM 2674 SE Not scheduled for sampling No FP,No S,O=NE <br /> VW-5D 09/10/99 NM 2900 -- L Not scheduled for sampling No FP,No S,O=NF <br /> VW-5D 12/13/99 NM 2820 -- E Not scheduled for sampling No FP,No S,O=NE <br /> VW-5D 03/28/00 NM 2497 -- SE Not scheduled for sampling No FP,No S,O=NE <br /> VW-5D 06/26/00 NM 2981 -- 13 Not scheduled for sampling No FP,No S,O=NE <br /> VW-5D 09/28/00 NM 2831 -- 1 -NL Not scheduled for sampling No FP,No S,O=NE <br /> nalylical results in nucrogranrs per Liter P=Putge <br /> TPHG- Iotal petroleum hydiocarbons as gasoline NP=No purge, <br /> M 113E-Methyl-tert-butyle,lhe, <-Below detection limits used by laboi atory <br /> Elevation datum is mean sea level [11 M I BE was analyzed using USEPA Method 8020 <br /> Measurements in feet [2]MTBE u as analyzed using USEPA Method 8260 <br /> NA-Not analyzed Sample designations <br /> NM-Not measured MW4(34)-Well 1D and sample depth(feet) <br /> NL-Not evaluated <br /> * Raised MRL due to nnatrne urtetfereiwc <br /> **- I lie sample contains a lover boiling point hydrmaibon nuxtuie quantified as gasoline,the e.hromalograun does not nnateln the typical gasoline fingerprint <br /> ***-Raised MRL due to high analyte,concentration rctluuing sanrple dilution <br /> N-Bailee blank <br /> I P-I rye product <br /> S- shten <br /> O-Obvious product odor <br /> I <br /> C 1ARC0105491QTRLY10548Q300 Delta <br /> Page 9 of 9 11/1400 <br />