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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 /> Ethyl- Total Well Depth to Groundwater <br /> Date TPH-G Benzene Toluene benzene Xylenes MTBE CO2 Elevation Groundwater Elevation <br /> Sam led u !L u 1L u 1L u IL u 1L u 1L m 1L ft above MSL feet K above MSL <br /> Well MIM-10 <br /> 08/23/01 <50 <0.50 <0.50 <0.50 <0.50 <5.0 NR 3.16 9.97 6.81 <br /> 11/30101 550 <1.0 <1.0 <1.0 <1.0 <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 /> 05/31102 <50 <0.50 <0.50 <0.50 <1.0 <0.50 NR 9.56 .6.40 <br /> 06130!02 <50 <0.50 <0.50 <0.50 <1.0 <0.50 NR 10.51 -7.35 <br /> 11/19102 <50 <0.50 <0.50 <0.50 <1,0 <0.50 NR 10.90 -7.74 <br /> 03106103 <60 <0.50 <0.50 50.50 <1.0 0.60 NR 10.56 -7.40 <br /> 05128103 <50 <0.50 50.50 <0.50 <1.0 0.96 NR 10.36 -7,22 <br /> 09111103 <50 <0.50 50.50 <0.50 <1,0 0,68 NR 11.07 -7.91 <br /> 01130104 550 <0.50 <0.50 <0.50 <1.0 3.10 NR 10.58 -7.40 <br /> 03130104 NR NR NR NR NR 3.40 NR 10.07 -6.91 <br /> 06/17104 NR NR NR NR NR 1.70 NR 10.34 -7.18 <br /> 09/30104 NR NR NR NR NR 0.80 NR 11.1 -7.94 <br /> 12/14/04 NR NR NR NR NR 0.63 NR 11.91 -6.75 <br /> 03/14/05 NR NR NR NR NR <0.50 NR 9.32 -6.16 <br /> 05/24/05 NR NR NR NR NR <0.50 NR 9.13 -5.97 <br /> 08124/05 NR NR NR NR NR 50.50 NR 9.95 -6.79 <br /> 08/24/05 1 NR NR NR NR NR <0.50 1 NR micro ur a 9.95 -6.79 <br /> 11/30105 1 Car Parked on Well <br /> 03113106 525 <0.50 <0.50 <0.50 <0.50 <1.0 I NR l microu e 9.06 5.90 <br /> Notes: <br /> In Bold denotes results from recent sampling event <br /> Well MW-8 was Insialled 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 /> TPH-G denotes total petroleum hydrocarbons as gasoline <br /> MTBE denotes methyl-tent-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 /> uglL denotes micrograms per liter. mg1L denotes milligrams per liter <br /> <denotes not detected above listed detection limit for the method <br /> it denotes feet <br /> MSL denotes mean sea level <br /> COI 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 tolled a sample from this well <br /> and the groundwater elevation could not be calculated for well MW-e this quarter <br /> "Hydrocarbon reported in the gasoline range does not match the gasoline standard <br /> "Sample contains desctete peak in gasoline'range <br /> "'Quantity of unknown hydrocarbon(s)in sample based on gasoline. <br /> J <br /> Page 9 of 9 <br />