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r <br /> TABLE i <br /> CUMULATIVE RESULTS OF GROUNDWATER SAMPLING AND ANALYSES <br /> QUIK STOP MARKET NO.132 <br /> 1 2555 WEST HAMMER LANE <br /> STOCKTON,CALIFORNIA <br /> Ethyl- Total Well Depth to Groundwater <br /> Date TPH-G Benzene Toluene benzene Xylenes MTBE CO2 Elevation Groundwater Elevation <br /> Sampled (ugfL) (ug/L) (ug1L) (ug/L) (ug(L) (ug/L) (mg/L) (ft above MSL) (feet) (ft above MSL) <br /> Well MW-7(cone'd) <br /> 0327/00 <50 <0.5 <0.5 <0.5 <0.5 <5 1 NR 7.47 4.25 <br /> 06115/00 <50 <0.5 <0.5 <0.5 <0.5 <5 NR 8,31 -5.09 <br /> 09118/00 <50 <0J <0.5 <0.5 <0.5 <0.50 NR 9.44 -6.22 <br /> t t/30/00 <50 <05 <0.5 <0.5 <0.5 <5 NR 10.88 -7.66 <br /> 0223101 <50 <0,5 <0.5 <0.5 <0.5 <5 NR 9,74 -6.52 <br /> 0522/01 <50 <0,5 <0.5 <0.5 <0.5 <5 NR 9,06 -5.84 <br /> 0823/01 <50 <0.5 <0.5 <0.5 <0.5 <5 NR 9.94 -6.72 <br /> 11[/30/01 <50 <1,0 <I.0 <1.0 <1.0 3.7 NR 10.56 -7.34 <br /> Wel!MW-8 <br /> 12/09/99 <5o <0.5 <0.5 <0.5 <D.5 <5 NR 3,07 9,78 4.71 <br /> 0327100 <50 <0.5 <0.5 40.5 <0.5 <5 NR 7,22 4.15 <br /> 06/15/00 <so <0.5 <0.5 <0.5 <0.5 <5 NR 8,13 -5.06 <br /> 09/1[8!00 <50 <0.5 <0.5 <0.5 <0.5 <D.50 NR • 8.87 •• <br /> 11/30/00 no access••• <br /> 02/23/01 <50 <0.5 <0.5 <0.5 <05 <5 NR 2.64 8.05 -5.41 <br /> 0522/0! 99 0.86 1.00 0,78 17 <S NR 8.40 -5.76 <br /> 0823/01[ <50 <0.5 <0.5 <0.5 0.65 <5 NR 9.03 -5.81 <br /> 11/30/01 <50 <1.0 <1.0 I <I.0 <l,0 8.5 NR 9.87 -6.65 <br /> Well MW-9 <br /> 0823/01 <50 <0.5 <0.5 <OS <o.S I <5 NR 3.15 9.70 -6.55 <br /> 11/30/01 <50 <1.0 <1.0 <I.0 <1.0 W.50 NR 10.46 -7.31 <br /> Well MW-IO <br /> 0823101 <50 <5 <0.5 m.5 <0.5 1 NR 3.16 9.97 -6LL ,81 <br /> ' 11130/O1[ <50 <1.0 <1.0 <L0 <1.0 <0.50 NR 10.50 -7.34 <br /> _j <br /> Notes: <br /> ell MW-8 was installed on S 1-19-99 and surveyed by Siegfried Engineering Inc.on 12-9-99;MW-2,MW-5,and MW-6 were also surveyed. <br /> Wells 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-tert-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 /> ug/L denotes micrograms per liter. mg/L denotes milligrams per liter <br /> <denotes not detected above listed detection limit for the method <br /> ft denotes feet <br /> MSL denotes meansea level <br /> CO,denotes carbon dioxide <br /> 'Due to cunstruchon 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 /> ***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 calcuiated for well MW-8 this quarter <br /> i <br /> 1� <br /> 1 .rr„ w s sum nzsoregs Page 8 of 8 <br />