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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 � Elevatlon Groundwater Elevation <br /> Sampled <br /> (ug/ u 1L u 1L u 1L u 1L u 1L m 1L ft above MSL feet ft above MSL <br /> Well MW-Y0 <br /> 08/23101 <50 <0.50 <0.50 <0.50 <0.50 <5.0 NR 3.16 9.97 -6.81 <br /> 11/301011 <50 <1.0 -41.0 <1.0 0.0 -40.50 NR 10.50 -7.34 <br /> 02/27102 <50 <0.50 <0.50 -40.50 <1.0 <0.50 NR 9.5B -6.42 <br /> 05!31102 <50 <0.50 <0.50 <0.50 <1.0 <0.50 NR 9.56 -6.40 <br /> 08130/02 <50 <0.50 <0.50 <0.50 <1.0 <0.50 NR 10.51 -7.35 <br /> 11/19/02 <50 -40.50 <0.50 -40.50 <1.0 <0.50 NR 10,90 -7.74 <br /> 03106/03 <50 -40.50 <0.50 <0.50 <1.0 0.60 NR 10.56 -7.40 <br /> 05/28/03 <50 <0.50 -40.50 <0.50 <1.0 0.96 NR 10.38 -7.22 <br /> 09/11/03 <50 <0,50 -40.50 <0.50 <1.0 0.66 NR 11.07 -7.91 <br /> 01/30/04 <50 <0.50 <0,50 -40.50 <1.0 3.10 NR 10.56 -7.40 <br /> 03/30/04 NR NR NR NR NR 3.40 NR 10.07 -6.91 <br /> 06/17/04 NR NR NR NR NR 1.70 NR 10.34 -7.18 <br /> 09130!04 NR NR NR NR NR 0.80 NR 11.1 -7.94 <br /> 12/14104 NR IVR NR NR NR 0.63 NR 11.91 -8,75 <br /> 03/14105 NR NR NR NR NR <0.50 NR 9.32 -6.16 <br /> 05/24/95 NR NR NR NR NR <0.50 NR 9.13 -5.97 <br /> 08/24105 NR NR NR NR NR <0.50 NR 9.95 -6.79 <br /> 08/24105 NR NR I NR NR NR 1 -40.50 NR I microur a 9.95 -6,79- <br /> 11130105 Car Parked on Well <br /> Notes: <br /> In Bold denotes results from recent sampling event <br /> Rows in grey were micro purged <br /> Well MW-B 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 /> • TPH-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 /> ug1L denotes micrograms per liter. mg1L 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 /> 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 MWS needs to be resurveyed,the groundwater elevation for MW-8 could not be determined. <br /> *MM11V-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 /> "Hydrocarbon reported in the gasoline range does not match the gasoline standard <br /> ""Sample contains descrete peak in gasoline range <br /> 4"Quantitv of unknown hydrocarbon(s)in sample based on gasoline. <br /> Page 9 of 9 <br />