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1 <br /> TABLE 1 <br /> CUMULATIVE RESULTS OF GROUNDWATER SAMPLING AND ANALYSES <br /> QUIK STOP MARKET NO. 132 <br /> -j.Y555 WEST HAMMER LANE <br /> STOCKTON,CALIFORNIA <br /> Ethyl- Total Well Depth to Groundwater <br /> Date TPH-G Benzene Toluene benzene Xylenes MTBE CO2 Elcvatirn Groundwater Elevation <br /> .- <br /> Sampled (ug/L) (ug/L) (ng/l,) (ug/L) (ug/L) (Ug/L) (rng/L) (ft above MSL) (feet) (ft above MSL) <br /> Well MW--9 <br /> 08/23101 <50 <0.5 1 <0.5 <0.5 <0.5 <5 NR 3.1$ 9.70 -6.55 <br /> 11/30/01 <50 <1,0 <1,0 <1,0 Q.0 <0.50 NR 10.46 -7.31 <br /> 02/27/02 <50 <0.50 <0.50 <0.50 4,0 <0.50 NR 9.54 -6.39 <br /> 05/31/02 <50 <0.50 <0.50 <0.50 4.0 <0.50 NR 9,55 -6.40 <br /> Well MW-9(Cantle!) <br /> 08!30102 <50 <0.50 <0.50 <0.50 <1.0 1 <0.50 NR 10.53 -7.38 <br /> 11/19/02 <50 <0.50 1.1 <0.50 1.7 1.1 NR 10.89 -7,74 <br /> 03/06/03 <50 <0.50 <0.50 <0.50 <1.0 0.97 NR 10.57 -7.42 <br /> 05/28/03 <50 <0.50 <0.50 <0.50 <I.0 1.4 NR 10.40 -7.25 <br /> 09/11/03 <50 <0.50 <0.50 <0.50 <1.0 4.8 NR 11.05 -7.90 <br /> Well mw-10 <br /> 08/23/01 <50 <0.5 <0.5 <0.5 <0.5 <5 NR 3.16 9,97 -6.91 <br /> 11/30/01 <50 <1.0 <1.0 <1.0 <L0 <0,50 NR 10.50 -7,34 <br /> 02/27/02 <50 <0.50 <0.50 <0.50 <1.0 <0.50 NR 9.58 -6.42 <br /> 05/31/02 <50 <0.50 <0.50 <0.50 <1.0 <0.50 NR 9.56 -6.40 <br /> t <br /> Oa/30/02 <50 <0.50 <0.50 <0.50 <1.0 <0.50 NR 10.51 -7,35 <br /> 11119!02 <50 <0.50 <0.50 <0.50 <t.0 <0.50 NR 10.90 -7.74 <br /> 03/06/03 <50 <0.50 <0.50 <0.50 <1.0 0.60 NR 10.56 -7.40 <br /> 05/28/03 <50 <0.50 <0.50 <0.50 <1.0 0.96 NR 10.38 -7.22 <br /> 09/11/03 <50 <0.50 c0,50 <0.50 <I.0 0.68 NR 11.07 7.91 <br /> :N tes; <br /> Well MW-8 was installed on 11-19-99 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 /> TPN-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 /> NR 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 /> 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 /> •**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 calculated for well MW-8 this quarter <br /> ^13ydrocarbon repotted in the gasoline range does not match the gasoline standard <br /> r <br /> r <br /> +: ; .,wzb�tws»>�st,sn ,nrwi�l�vo=:ptiu,��vi Page 10 of 10 <br />