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TABLE 1 <br /> CUMULATIVE RESULTS OF GROUNDWATER SAMPLING AND ANALYSES <br /> QUIK STOP MARKET NO.132 <br /> 2555 WEST HAMMER LANE <br /> STOCKTON,CALIFORNIA <br /> 1 <br /> Ethyl- Total Well Depth to Groundwater <br /> ' Date TPS-G Benzene Toluene benzene Xylenes MTBE CO2 Elevation Groundwater Elevation <br /> Sampled (ug/L) (ug/L) (ug/L) (ug/L) (ugAL) (ug/L) (mg/L) (ft above MSL) (feet) (ft above MSL) <br /> Well MW-7(cont'd) <br /> 03/27/00 <50 <0.5 40.5 <0.5 <0.5 <5 NR 7.47 -4.25 <br /> ' 06/15/00 <50 <0.5 <0.5 <0.5 <OS <5 NR 8.31 -5.09 <br /> 09/18/00 <50 <0.5 <0.5 <0.5 �0S <0.50 NR 9.44 -6.22 <br /> 11!30/00 <50 <0.5 <0.5 <0.5 <0.5 <5 NR 10.88 -7.66 <br /> 02/23/01 <50 <0.5 <0.5 <0.5 <0.5 <$ NR 9.74 -6.52 y 0522/0[ <50 <0.5 <0.5 <0,5 <0.$ <5 NR 9.06 -5,84 <br /> 0823101 <50 <0.5 <0.5 <0.5 <0.5 <5 NR 9.94 -6,72 _ <br /> 11/30/01 <50 <1.0 <t_0 ❑.0 <1.0 3,7 NR 10.56 -734 l <br /> 02!27102 <50 [0.50 m,50 <0,50 <1.0 t 2.0 NR -644 <br /> -6.44 <br /> Wel!MW-8 <br /> 12/09/99 <50 <0.9 <0.5 <0.5 <0.5 <5 NR 3.07 9,78 -6,71 <br /> 03/27/00 <50 <0.5 <0.5 <0,5 <0,5 <5 NR 7,22 4.15 <br /> 06/15/00 <50 <0.5 <0.5 <0,5 <0,5 <5 NR 8,13 -5.06 <br /> 09118!00 <50 <0.5 <0.5 <0,5 <0,5 <0.50 NR + 8,87 <br /> 11/30/00 no access••• <br /> 0223/01 <50 <0.5 <0,5 <0.5 <0.5 <5 NR 2.64 8.05 -5.41 <br /> 0527/01 99 0.86 Loo 0.78 17 <5 NR 8.40 -5.76 <br /> 0823101 <50 <0,5 <0.5 <0.5 0,65 e5 NR 9.03 -5.81 <br /> L <br /> 11130/01 <50 <L0 Q.0 <1.0 <1.0 8.5 NR 9.87 -6.65 JA <br /> 0227/02 <50 W.50 m.50 <0.50 <1.0 <0.50 NR 9.01 -L Y <br /> ' Well MW-9 <br /> 08/23/01 <50 <0.5 <0.5 <0.5 40S <5 NR 3.15 9.70 -6.55 <br /> 11/30/01 <50 Q.0 U.0 <1.0 <1.0 <0.50 NR 10.46 -7.31 <br /> 02127/02 <50 <0.50 <0.50 <0.50 <L0 <0.50 NR 9.54 -6.39 <br /> Well MW-10 <br /> 08/23101 <50 <0.5 <0.5 <0.5 <0.5 <5 NR 3.16 9.97 -6.81 <br /> 11!30101 <50 <I.0 <1,0 <1.0 <1.0 <0.50 NR 10.50 -7.34' <br /> 0221!02 <50 <0.50 <0,50 <0.50 <LO <0.50 NR 9.58 -6,42 <br /> Notes; <br /> Well MW-8 was installed on 11-19-99 and surveyed by Siegfried Engineering Inc. ed <br /> c.on 12-9-99;MW-2,MW-5,and MW-6 were also surve <br /> ells MW-9 and MW-10 were installed on August 7,2001 and surveyed by Morrow Surveying on August 29,2001 <br /> PH-G denotes total petroleum hydrocarbons as gasoline <br /> MTBE denotes methyl-ten-butyl ether;from 12-3-98 MTBE analyses were performed by EPA Method 8260 <br /> R denotes analysis not requested. NA denotes not available <br /> u8/L denotes micrograms per liter. mg/L denotes milligrams per liter <br /> [denotes not detected above listed detection limit for the method <br /> R denotes feet <br /> MSL denotes mean sea level <br /> CO2 denotes carbon dioxide <br /> 'Due to construction activities,the well MW-8 elevation has been changed,but the well could not be resurveyed prior to this monitoring event, <br /> -Because MW-8 needs to be resurveyed,the groundwater elevation for MW-8 could not be determined. <br /> ' <br /> "*MW-8 was recently paved over by the City of Stockton preventing access to it. ATC was unable to collect a sample from this well <br /> and the groundwater elevation could not be c0culaled for well MW-8 this quarter <br /> 1 <br /> mrr,ar..,v tsunwzvrirvsiaiun;rr.n.. ,u arsna.m,,, ..i <br /> Page 8of8 <br />