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i • I <br /> Table 1 <br /> Historical Soil Sample Analytical Results <br /> 7 Eleven Store#32262 <br /> 2360 West Grant Line Road <br /> Tracy California <br /> Sample Ethyl Total <br /> Sample Date Depth Benzene Toluene Benzene Xylenes TPHg MtBE DIPS EtBE TAME TBA Lead 1,2-DCAJ EDB NOTE <br /> D $am led (ft bgs) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg} (mg/kg) {mg/kg} (mg(kg} <br /> �0 0a�a �o o0so �a 0oso �a 0050 X10 019 -- <br /> COMP-1A,1B,1C,D 10/17/03 - -- -- - <br /> Ex lap natron <br /> BTEX TPHg MtBE,DIPS EtBE TAME &TBA by 82608 TPHg=Total petroleum hydrocarbons as-gasoline <br /> Total Lead analyzed using EPA 60108 MtSE=Methyl tert butyl ether <br /> f3 bgs=Feet below ground surface DIPS=Di-Isopropyl ether <br /> mg/kg=milligrams per kilogram EtBE=Ethyl tertiary butylether <br /> <=Not detected above laboratory reporting lima TAME=Tertiary amyl methyl ether <br /> TBA=Tertiary Butanol <br /> 1,2 DCA=1,2 Dichloroethane <br /> EDB=Ethylene dibromide <br /> J=TBA results may be biased slightly high a fraction of MtBE(up to 5%)converts 10 TBA during the analysis Laboratory considers this conversion effect to be mathmatically significant in <br /> samples that contain MtBE/TBA in ratios of over 3 1 <br /> Page 3 of 3 <br /> 7 Eleven1322621Tables132262 Historical Soil <br />