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Table 1 <br /> Historical Sod Sample Analytical Results <br /> 7-Eleven Store#32262 <br /> 2360 West Grant Line Road <br /> Tracy Califomia <br /> Sample Ethyl Total <br /> Sample Date Depth Benzene Toluene Benzene Xylenes TPHg MtBE DIPE EtBE TAME TBA Lead 1,2-DCA EDB NOTE <br /> D sampled (ft bgs) (mg/kg) (mglkg) (mglkg) (mg/kg) (mglkg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) <br /> Remediation Wells <br /> EX-1 06/02/04 20 -- -- -- -- -- -- -- -- -- -- _ -- -- <br /> 25 <0 0050 <0 0050 <0 0050 <0 0050 <1 0 037 <00050 <00050 <00050 <00050 — -- -- <br /> Stockpile Samples <br /> SP1-A,B,C,D 06/02/03 -- <0 0050 <0 0050 <0 0050 <0 0050 <1 0 085 <0 0050 <0 0050 <0 0050 14 807 -- -- <br /> SP2-A,B,C,D 06/02/03 -- <0 0050 <0 0050 <0 0050 <0 0050 <1 0 53 <0 0050 <0 0050 <0 0050 29 606 — -- <br /> SP3-A,B,C,D 06/02/03 - <0 0050 <0 0050 <0 0050 <0 0050 <1 0 68 <0 0050 <0 0050 0 012 071 658 -- -- <br /> SP4-A,B,C,D 06/02/03 <0 0050 <0 0050 <0 0050 <0 0050 <1 0 <0 0050 <0 0050 <0 0050 <0 0050 <0 0050 3 64 -- -- <br /> SP5A,B,C,D 06/02/03 -- <0 0050 <0 0050 <0 0050 <0 0050 <1 0 <0 0050 <0 0050 <0 0050 <0 0050 <0 0050 133 - -- <br /> SP6 A,B,C,D 06/02/03 -- <0 0050 <0 0050 <0 0050 <0 0050 <1 0 <0 0050 <0 0050 <0 0050 <0 0050 <0 0050 1 41 -- <br /> COMP-1A,1 B,1C,D 10/17/03 -- <0 0050 <0 0050 <0 0050 <0 0050 <1 0 019 -- -- -- -- -- -- <br /> SP-7 ABCD 06/02/04 -- <0 0050 <0 0050 <0 0050 <0 0050 <10 017 -- -- -- 639 -- -- <br /> SP-8(ABCD) 07/26/04 -- <0 0050 <0 0050 <0 0050 <0 0050 <10 0 028 -- -- -- -- 761 --Explanation <br /> BTEX TPHg MtBE DIPE EtBE TAME 8 TBA by 8260B TPHg=Total petroleum hydrocarbons-as-gasoline <br /> Total Lead analyzed using EPA 6010B MtBE=Methyl tert-butyl ether <br /> ft bgs=Feet below ground surface DIPE=Di isopropyl ether <br /> mglkg=milligrams per kilogram EtBE=Ethyl tertiary-butylether <br /> <=Not detected above laboratory reporting limit TAME=Tertiary-amyl methyl ether <br /> UST=Underground Storage Tank TBA=Tertiary Butanol <br /> —=Not analyzed t 2-DCA=1,2-Dichloroethane <br /> EDB=Ethylene dibromrde <br /> J=TBA results may be biased slightly high a fraction of MtBE(up to 5%)converts to TBA during the analysis Laboratory considers this conversion effect to be mathmatrcally significant in <br /> samples that contain MtBE1TBA in ratios of over 3 1 <br /> i <br /> 7-Eleven1322621Tables132262 Historical Sod As Page 3 of 3 <br />