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CAMBRIA Table 3 Groundwater Analytical Data,Former Texaco Service Station/ARCO,440 West Charter Way,Stockton,California Sample Depth Date TPHg B T E X MTBE DIPE ETBE TAME TBA 1,2-DCA EDB Ethanol Methanol (feet) Sampled ( ) ( ) ( ) ( ) (AgV ( ) WQ ( ) ( ( ) ( ) ( ) (AWL) ( ) CPT-8-85W 85 02-Sep-04 100 14 12 10 29 050 <2 0 <2 0 C2 0 70 22 <0 50 NA NA CPT-8-127W 127 01-Sep-04 360 <0 50 0S3 6.4 17 <0 50 <2 0 <2 0 <2 0 <5 0 <0 50 <0 50 NA NA CPT-8-137W 137 01-Sep-04 <50 <0 50 <0 50 <0 50 11 <0 50 <2 0 <2 0 Q 0 <5 0 <0 50 <0 50 NA NA CPT-8-144W 144 01-Sep-04 64 <0 50 <0 50 11 29 <0 50 <2 0 <2 0 <2 0 <5 0 <0 50 <0 50 NA NA CPT-9-85W 85 31-Aug-04 27,000 11,000 340 2,200 600 <100 <400 <400 <400 <1,000 <100 <100 NA NA CPT-9-108W 108 31-Aug-04 190 42 2.3 52 29 <0 50 38 <2 0 <2 0 82 0.55 <0 50 NA NA CPT-9-121W 121 31-Aug-04 260 39 94 79 13 <0 50 <2 0 <2 0 <2 0 64 <0 50 <0 50 NA NA CPT-9-146W 146 31-Aug-04 290 35 11 83 15 <0 50 <2 0 <2 0 <2 0 <5 0 <0 50 <0 50 NA NA Abbreviations and Notes yg/L=Micrograms per liter(ppb) NA=Not analyzed <x=Not detected at reporting lima x TPHg=Total petroleum hydrocarbons as gasoline by EPA Method 8015(Modified)or equivalent BTEX=Benzene,toluene,ethylbenzene,and xylenes by EPA Method 8020 or equivalent MTBE=Methyl tertiary butyl ether by EPA Method 8260 Methanol=by EPA Method 8015(Modified) Ethanol=by EPA Method 8260E Tertiary amyl methyl ether(TAME),tertiary butyl alcohol(TBA),di-isopropyl ether(DIPE),1,24bromoethane(EDB), 1,2-Dichloroethane(1 2-DCA) and ethyl teruary butyl ether(ETBE)by EPA Method 8260B 1399 Page 2 of 2