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TABLE 1 <br /> CUMULATIVE RESULTS OF GROUNDWATER SAMPLING AND ANALYSES <br /> QUIK STOP MARKET NO. 132 <br /> 2555 WEST HAMMER LANE <br /> �j STOCKTON,CALIFORNIA <br /> Ethyl- oto a ept to Groundwater <br /> Date TPH-C Benzene Toluene benzene Xyftnes MTBE CO2 Elevation Groundwater Elevation <br /> Sampled (uglL) (ug/L) (uglL) (ug/L) (ug/L) (uglL) (rn&L) (ft above MSL) {feet) (ft above MSL) <br /> Well MW-7(cont'd) <br /> 03/27100 <50 <0.5 <0.5 <0.5 <0.5 <5 NR 7.47 -4.25 <br /> 06/15/00 <50 <0,5 <0.5 <0.5 <0.5 <5 NR� 8.31 -$.09] 091€8100 <50 <0,5 <0.5 <0.5 <0.5 <0.50 NR 9.44 .6.22 <br /> ! 11/30/00 <50 <0.5 <0.5 <0.5 <0.5 <5 NR 10.88 -7.66 <br /> 02123/01 <50 <0.5 <0.5 <0.5 <0.5 <5 NR 9.74 6.52 <br /> 05/22/01 <50 <0,5 <0.5 <0.5 <0.5 <5 NR 9.06 -5.84 <br /> 08/23/01 <50 I <0.5 <0.5 <0.5 <0.5 <5 NR 9.94 -6.72 <br /> � <br /> Well MW-8 <br /> 12/09/99 <50 <0.5 <0.5 <0.5 <0.5 <5 NR 3.07 9.78 -6.71 <br /> 03/27/00 <50 <0.5 <0.5 <0.5 <0.5 <5 NR 7.22 4.15 <br /> 06/15/00 <50 <0.5 <0.5 <0.5 <0.5 <5 NR 8.13 -5.06 <br /> 09/18!00 <50 <0.5 <0.5 <0.5 <0.5 <0.5o NR • 8.87 ** <br /> 11/30100 no access'•• <br /> 02123/01 <50 <0.5 <0.5 <0.5 <0.5 <5 NR 2.64 8.05 -5.41 <br /> 1! 05/22/01 99 0.86 1.00 0.78 17 <5 NR 8.40 -5.76 <br /> 08/23/01 <50 <0.5 <0.5 <0.5 0.65 <5 NR 9.03 -5.81 <br /> Well MW-9 <br /> 08/23/01 <50 <0.5 <0.5 <0.5 <0.5 1 <5 1 NR 3.15 9.70 -6.55 <br /> Well MW-10 <br /> 08/23/01 <50 <0.5 <0.5 75 <0.5 <5 1 NR 3.16 9.97 -6.81 <br /> ores: <br /> ! Well MW-8 was installed on 11-19-99 and surveyed by Siegfried Engineering Inc.on 12-9-49;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 Morrosy,Surveying on August 29,2001 �I <br /> H-G denotes total petroleum hydrocarbons as gasoline <br /> MTBE denotes methyl-cert-butyl ether;from 12-3-98 MTBE analyses were performed by EPA Method 8260 <br /> i� 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 /> ft denotes feel <br /> MSL denotes mean sea level <br /> ' COs 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 gToLundwaler elevation could not be calculated for well MW-8 this quarter <br /> t� <br /> ` i_v�t��n,;+tu�4c„rw_sns�,�.ia:aMK��rnen3�..�m��..n��•,snn��.�*�,t.ni�.ri.vr�,,..��si <br /> Page 8of8 <br />