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CAMBRIA Table 5. Comparison of Soil Analytical Data-BP Site No 11191 1469 East Hammer Lane,Stockton,California Sample Year Depth TPHg Benzene Toluene Ethylbenzene Xylenes MTBE Location sampled (feet) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) Northwestern Dwyenser Island THP-2 1994 10 <10 <0 005 <0 005 <0 005 <0 005 -- MW-1 2001 11 <0 05 <0 005 <0 005 <0 005 <0 005 <0 005 THP-2 1994 25 <10 <0 005 <0 005 <0 005 <0 005 -- MW-1 2001 255 <005 <0 005 <0 005 <0 005 <0 005 <0 005 B-4 1992 30 <10 0 025 <0 005 <0 005 00092 -- MW-1 2001 31 <0 05 <0 005 <0 005 <0 005 <0 005 <0 005 B-5 1992 365 <10 <0 005 <0 005 <0 005 <0 005 -- MW-1 2001 36 <0 05 <0 005 <0 005 <0 005 <0 005 <0 005 B-4 1992 45 <10 0 049 0 052 00067 0 014 -- B-5 1992 465 <10 015 013 0 014 004 -- MW-1 2001 46 0 095 <0 005 <0 005 <0 005 <0 005 0 026 Southeastern Dispenser Island B-3 1992 10 <10 <0 005 <0 005 <0 005 <0 005 -- MW-2 2001 11 <0 05 <0 005 <0 005 <0 005 <0 005 <0 005 B-3 1992 45 <10 <0 005 <0 005 <0 005 <0 005 -- MW-2 2001 46 <0 05 <0 005 <0 005 <0 005 <0 005 <0 005 North of Underground Storage Tanks B-1 1992 10 <10 00078 <0 005 <0 005 <0 005 0 096* MW-3 2001 11 <0 05 <0 005 <0 005 <0 005 <0 005 <0 005 B-1 1992 45 <10 <0 005 <0 005 <0 005 <0 005 -- MW-3 2001 46 10 <0 005 <0 005 <0 005 <0 005 097 South of Underground Storage Tanks B-2 1992 10 <10 0 088 0 011 <0 005 0 041 0 37* MW4 2001 11 <0 05 <0 005 <0 005 <0 005 <0 005 <0 005 B-2 1992 45 <10 <0 005 <0 005 <0 005 <0 005 -- MW-4 2001 46 050 <0 005 <0 005 <0 005 <0 005 035 Abbreviations and Notes- . TPHg=Total pertroleum hydrocarbons as gasoline MTBE=Methyl tert-butyl ether mg/kg=Mllhgrams per kilogram <n=Below detection limit of n mg/kg --=Not analyzed *=Suspected to be MTB Eby laboratory EVM11191WApn1AMdytkd7aCl UXS—O,C p&&w Page 1 of t