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Table 11 <br /> Dual Phase Extraction System -Groundwater Analytical Data <br /> Parcel 2A-L&M OU <br /> 666 West Weber Avenue, Stockton, CA <br /> HEM I Ethyl- Total <br /> TRPH w/SGT TPHg TPHd TPHo Benzene Toluene benzene Xylenes MtBE DIPE ETBE TAME TBA <br /> Date Sampled Sample ID Notes pH (mg/L) (mg/L) (Ng/L) (Ng/L) (Ng/L) (Ng/L) (pg/L) (Ng/L) (Ng/L) (Ng/L) (Ng/L) (Ng/L) (Ng/L) (Ng/L) <br /> 7/12/2010 GW-INF -- 750 92,000 78,000 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 7/12/2010 MID-1 520 5,800 2,800 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 7/12/2010 MID-2 <50 360 300 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 7/12/2010 MID-3 <50 110 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 7/12/2010 MID-4 <50 <50 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 7/12/2010 MID-5 <50 <50 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 7/12/2010 GW-EFF <1.0 <50 <50 <100 <0.10 <0.10 <0.10 <0.10 <5.0 <0.50 <0.50 <0.50 <12 <br /> 8/4/2010 GW-INF 750 49,000 38,000 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 8/4/2010 MID-1 67 5,000 3,000 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 8/4/2010 MID-2 <50 1,200 920 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 8/4/2010 MID-3 18 97 130 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 8/4/2010 MID-4 <50 <50 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 8/4/2010 MID-5 <50 <50 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 8/4/2010 GW-EFF -- <1.0 <50 <50 <100 <0.10 <0.10 <0.10 <0.10 <5.0 <0.50 <0.50 <0.50 <12 <br /> POTW Discharge Limits: 5.0-10.0 100 100 -- 500 Benzene/4,570 Total BTEX <5.0 <12 <br /> Definitions: <br /> DIPE =Diisopropyl ether <br /> ETBE =Ethyl tertiary-butyl ether <br /> lbs =Pounds <br /> ATC =Authority To Construct <br /> BTEX =Benzene,Toluene,ethyl-Benzene,and Total Xylenes <br /> PAH =Polynuclear Aromatic Hydrocarbons <br /> GAC =Granular Activated Carbon <br /> pg/L =Micrograms per liter <br /> mg/L =Milligrams per liter <br /> MtBE =Methyl tert-butyl ether <br /> -- =Not analyzed or not applicable <br /> < =Value is less than laboratory reporting limit <br /> pH =Concentration of hydrogen ions <br /> TAME =Tertiary-amyl methyl ether <br /> TBA =Tertiary-butyl alcohol <br /> TPHd =Total petroleum hydrocarbons as diesel(diesel range organics) <br /> TPHg =Total petroleum hydrocarbons as gasoline(gasoline range organics) <br /> TPHo =Total petroeum hydrocarbons as motor oil(motor oil range organics) <br /> TRPH =Total recoverable petroleum hydrocarbons <br /> HEM w/SGT =Hexane extractable material with silica gel treatment <br /> POTW =Publically Owned Treatment Works <br /> Notes: <br /> 1 =System permitted under ATC No.N-4878-1-1. Source test for air board. Extracted groundwater being held in onsite holding tank. <br /> System shut down following source test. <br /> I:\Tidewater\TW Stockton(Parcel 2A-0415)\Engineering\O&M\Tables\O&M Tables 2010\3Q10\Parcel 2A OM Tables 3010.xlsx Page 12 of 13 <br />