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Table 25 <br /> Soil Gas Analyticals <br /> Parcel 2A and Adjacent Properties <br /> West Weber Avenue and Lincoln Streets <br /> Stockton, California <br /> TO-3 GC/FID TO-15 GC/MS Full Scan ASTM D-1946 <br /> 82606 8260B 8015M <br /> TPH C2+HC's (Ref. BTEX SVOCs Fuel Oxygenates Natural Gas <br /> Gas) Analysis <br /> Casing Length Dilution Ethyl- <br /> Sample or Depth(bgs) Factor Date TPHg Benzene Toluene benzene Total Xylenes Naphthalene MTBE DIPE ETBE TBA TAME Methane Gas <br /> ID (feet) I(TO-15) Sampled (ug/m3) (ppmV) (ug/m3) (ppmV) (ug/m3) (ppmV) (ug/m3) (ppmV) (ug/m3) (ppmV) (ug/m3) ppmV (ug/m3) ppmV (ug/m3) ppmV (ug/m3) ppmV (ug/m3) ppmV (ug/m3) ppmV ppmV <br /> Area 2A/213 And Adjacent Pro erties <br /> Trip Blank 1 6/2/2009 2 <5,000 <1.2 <100 <0.03 <200 <0.05 <100 <0.02 <100 <0.02 <100 <0.02 <100 <0.03 <100 <0.02 <100 <0.02 <1,000 <0.33 <100 <0.02 <1,000 <br /> (cont) 1 10/30/2009 2 <10,000 <2.4 <100 <0.03 <200 <0.05 <100 <0.02 <100 <0.02 <100 <0.02 <100 <0.03 <100 <0.02 <100 <0.02 <1,000 <0.33 <100 <0.02 <1,000 <br /> 1 2/19/2010 2 <10,000 <2.4 <100 <0.03 <200 <0.05 <100 <0.02 <100 <0.02 <100 <0.02 <100 <0.03 <100 <0.02 <100 <0.02 <1,000 <0.33 <100 <0.02 NS <br /> 1 5/7/2010 2 <10,000 <2.4 <100 <0.03 <200 <0.05 <100 <0.02 <100 <0.02 <100 <0.02 <100 <0.03 <100 <0.02 <100 <0.02 <1,000 <0.33 <100 <0.02 <1,000 <br /> 1 7/23/2010 2 <10,000 <2.4 <100 <0.03 <200 <0.05 <100 <0.02 <100 <0.02 <100 <0.02 <100 <0.03 <100 <0.02 <100 <0.02 <1,000 <0.33 <100 <0.02 <1,000 <br /> <2.4 <100 <0.03 <0.02 <100 <100 100 <0.02 <1,000 <0.33 <0.02 <1,000 <br /> Explanation: <br /> bgs =below ground surface TBA =Tertiary-Butyl Alcohol 2 =Samples analyzed by TEG under specified EPA Methods <br /> ppmV =parts per million by volume TAME =Tertiary-Amyl-Methyl-Ether ESL =Environmental Screening Levels <br /> Pg/m' =micrograms per cubic meter BTEX =Benzene,Toluene,Ethylbenzene,Xylenes NS =Not Sampled during this quarter <br /> TPHg =Total petroleum hydrocarbons in gasoline range organics SVOCs =Semi-Volatile Organic Compounds 3 <br /> =Summa Cannister collected and duplicate sample analyzed by Calscience Environmental laboratories <br /> MTBE =Methyl Tertiary-Butyl-Ether < =Less than method reporting limit <br /> DIPE =Di-Isopropyl Ether 1 =Samples analyzed by Air Toxics Ltd.under specified EPA methods 4 =Sample was contaminated following leak check analysis with 1,1 Diflouroethane.The sample was discarded and a <br /> ETBE =Ethyl-Tertiary-Butyl-Ether duplicate sample was re ran in UPSV-3. <br /> I:\Tidewater\TW Stockton(Parcel 2A-0415)\Tables\QMR Tables\2010\4Q10\Parcel2A Soil Gas Table(Table 25,Figures 36,37,38,and 39)4Q10.xls <br /> Page 9 of 9 <br />