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TABLE 1 <br /> CUMULATIVE RESULTS OF GROUNDWATER SAMPLING AND ANALYSES <br /> +... QUIK STOP MARKET NO.132 <br /> 3555 WEST HAMMER LANE <br /> STOCKTON,CALIFORNIA <br /> w <br /> Ethyl- Total Well Depth to Groundwater <br /> Date TPH-G Benzene Toluene benzene Xylenes MTBE CO2 Elevation Groundwater Elevation <br /> Sampled (ug/L) (ug/L) (ug/L) (ug/L) (ug1L) (ug/L) (mg1L) (ft above MSL) (feet) (ft above MSL,) <br /> V <br /> Well AIW--9 <br /> 08/23/01 <50 <0,5 <0,5 <05 <0.5 <5 NR 3.15 9,70 -6.55 <br /> 11130/01 <50 <1.0 <1.0 <7,0 <10 <D.50 NR 10,46 -7,31 <br /> 0-0 02127/02 <50 <0.50 <0.50 <0.50 <I,0 <0.50 NR 9.54 -6,39 <br /> 05/31/02 <50 <0 so <0.50 <0.50 <L0 <0.50 NR 955 -6.40 <br /> 08136102 <50 <0.50 <0.50 60.50 <1.0 <0.50 NR 10.53 -7.38 <br /> 11/19102 60 <0.50 L I <050 1.7 1.1 NR 10.89 -7.74 <br /> 4„0 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 <1.0 1.4 NR 10.40 -7.25 <br /> 09/11/03 <50 <0.50 <0.50 <0.50 <10 4,8 NR 11.05 -7.90 <br /> 01130104 <50 <0.50 <0,50 <050 <1.0 3.9 NR 10.56 -7.41 <br /> 6"f 03/30/04 NR <0.50 <0 so <0.50 <0.1 2.9 NR 10,07 -6.92 <br /> 06/17/04 NR <0.50 <0 so <0.50 <1.0 1.3 NR 10.40 -7.25 <br /> 09/30/04 NR <0.50 <0.50 <0.50 <1.0 1 1.5 1 NR 11.10 -7.95 <br /> Lr Well MW--1 t7 <br /> 08/23/01 <50 <05 <D.5 <0.5 <0,5 <5 NR 3.16 9.97 -6.81 <br /> _ 11/30/01 <50 <10 <1.0 <1.0 <1.0 <050 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 /> �r 05/31/02 <50 <0.50 <0.50 <050 <1.0 <0.50 NR 9.56 -6,40 <br /> 98/30/02 <50 <0.50 <0.50 <0.50 Q.0 <0.50 NR 10.51 -7,35 <br /> 11119/02 <50 <0.50 <0.50 <050 <1A <0.50 NR 10.90 -7.74 <br /> 03/06/01 <50 <050 <0.50 <0.50 <1.0 0.60 NR 10.56 -7.46 <br /> 05/28/03 <5o <0.50 <050 <0.50 <1.0 0.96 NR 10.38 -7.22 <br /> 09/11/03 <50 <a50 <0.50 <0.50 Q.0 0.68 NR 11.07 -7.91 <br /> 01/30/04 <50 <0.50 <0.50 <0.50 <J.0 3.10 NR 10.56 -7.40 <br /> 6r 03130/04 NR NR NR NR NR 3.40 NR 10.07 -6.91 <br /> 06117/04 NR NR NR NR NR 1.70 NR 10.34 -7.18 <br /> 09/30104 1 NR NR I NR I NR I NR I 0.60 I NR 11.10 -7.94 <br /> Notes: <br /> In Bold denotes results from recent sampling event <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 an August 7,2001 and surveyed by Morrow Surveying on August 29,2001 <br /> PH-G denotes total petroleum hydrocarbons as gasoline <br /> I.r <br /> MTBE denotes methyl-tent-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 mean sea level <br /> COs denotes carbon dioxide <br /> Lot '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 /> ***MVV-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 /> i.r <br /> ^Hydrocarbon reported in the gasoline range does not match the gasoline standard <br /> ^^Sample contains descrete peak in gasoline range <br /> i.r <br /> 4.r <br /> it Page 10 of W <br />