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• • 91of1 Table 2 Sad Analytical Data ARCO Service Station No 4932 f 6 East Harding Way Stockton,California Analyzed By The DHS/LUFT Method Analyzed By EPA Method 8260B Ethyl- Sample Depth Date TPHg Benzene Toluene benzene Xylenes MtBE TAME DIPE EtBE TBA 1,2-DCA EDB ID (feet bgs) Sampled (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) DMW-1, 15' 15 3114/02 <1 0 <0 0050 <0 0050 <0 0050 <0 0050 <0 20 <0 10 <0 10 <0 10 41 <0 10 <0 20 DMW 1 30' 30 3/14/02 <5 0 <0 025 <0 025 <0 025 <0 025 40 <0 20 <0 20 <0 20 <5 0 <0 20 <0 40 DMW-1,40 40 3114/02 <1 0 <0 0050 <0 0050 <0 0050 <0 0050 0 31 <0 10 <0 10 <0 10 <2 5 <0 10 <0 20 DMW-1,50' 50 3114/02 3 2 0 57 <0 0050 034 0 33 71 <0 10 <0 10 <0 10 <2 5 <0 10 <0 20 DMW-1,69 5' 695 3/14102 <1 0 00081 <0 0050 <0 0050 <0 0050 0 40 <0 10 <0 10 <0 10 <2 5 <0 10 <0 20 DMW-1 80' 80 3/14102 <1 0 <0 0050 <0 0050 <0 0050 <0 0050 <0 20 <0 10 <0 10 <0 10 <2 5 <0 10 <0 20 EW-1, 15' 15 3/15/02 <1 0 0 010 <0 0050 0 017 00098 7 5 <0 10 <0 10 <0 10 <2 5 <0 10 <0 20 EW-1,27 5' 275 3115102 780 51 73 23 120 290 <0 40 <0 40 <0 40 <10 <0 40 <0 80 EW-1,40' 40 3/15102 72 027 0 69 037 1 8 20 <0 10 <0 10 <0 10 <2 5 <0 10 <0 20 EW 1,47 5' 475 3/15/02 1 8 8 1 2 025 042 2 0 1 024 <0 10 <0 10 <0 10 <2 5 <0 10 <0 20 Explanation DHS/LOFT=California Department of Health Servroes/Leakmg Underground Fuel Tank EtBE=Ethyl tertiary Butyl Ether bgs=below ground surface TBA=Tertiary Butyl Alcohol TPHg=Total Petroleum Hydrocarbons as gasoline 1,2-DCA=1 2 Dichloroethane MtBE=Methyl tertiary Butyl Ether EDB=Ethyl Drbromide or 1,2-Dibromoethane TAME=Tertiary Amyl Methyl Ether mg/kg=milligrams per kilogram DI PE=Di-isopropyl Ether <=Below given laboratory detection limit 11ARCO149321Reportsllnvestigatron TableslTable 2