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Table 1 <br /> Summary of Soil Sampling Results <br /> AST Excavation and <br /> Stockpile Soil Sampling Results <br /> March to July 2003 <br /> Mountain House Parkway <br /> Tracy,Callifornia <br /> "ITII-r Benzene Toluene lahyl- "total Total <br /> on <br /> (mg/kg) (pg(kg) '_(pg/kg), Benzene Xylenes. Lead <br /> 26881-ASTI Initial Soil Sampling/AST 03/17/03 5.4 3,300 900 ND <200 ND <200 ND <200 320 4 <br /> 26883-AST2 Area 5 6,200 480 ND <200 ND QO0 ND <200 ND <200 5 <br /> 274881 -SSW 10 ND <I ND <l ND <5 ND <5 ND <5 ND <5 6.7 <br /> 27482-ESW 9 ND <1 ND <IND <5 ND <5 ND <5 ND <5 4.4 <br /> 27483-NSW 06/18/03 11 ND <3 ND <l ND <5 ND <5 ND <5 ND <5) 5.3 <br /> 27484-WSW AST Excavation 9 1.7 ND <1 ND <5 ND <5 ND 15 ND <5 3.5 <br /> 27485-B 1 14.5 2.3 ND <I ND <5 ND <5 ND <5 ND <5 4.5 <br /> 27486-B2 14.5 ND(<1) ND <5 ND <5 ND <5 ND <5 6.2 <br /> 28745-B3 07/02/03165.1 ND <1 • * • s 5.4 <br /> Composite CA 2,700 290 * * • * 6.0 <br /> Excavation Stockpile Are 09/02/03 Varies * . * * 6.6 <br /> Composite CB 1,900 87 <br /> Notes: <br /> mg/kg =milligrams per kilogram(parts per million) ASTI =above ground storage tank sample No. I <br /> pg/kg =micrograms per kilogram(parts per billion) SSW =south side wall <br /> ND =not detected at or above laboratory reporting limits ESW =east side wall <br /> • =not applicable or not analyzed NSW =north side wall <br /> TPH-G =total petroleum hydrocarbons as referenced to gasoline WSW =west side wall <br /> TPH-D =total petroleum hydrocarbons as referenced to diesel B I =bottom sample No.1 <br /> B-I =former boring B-1 CA =composite sample CA(Includes subsets CAI,CA2,CA3 and CA4) <br /> MW-1 =well boring MW-1 CB =composite sample CB(Includes subsets CB I,CB2,CB3 and CB4) <br /> 21073/STO2ED45 <br /> Copyright 2003 Keinfelder,Inc. Pape T-t <br /> July 28,2003 <br /> k9i KLEINFEIDER <br />