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Table 8 <br /> Dual Phase Extraction System-Groundwater Analytical Data <br /> Parcel 2A-L&M OU <br /> 666 West Weber Avenue, Stockton, CA <br /> HEM 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) (Ng/L) (Ng/L) (Ng/L) (Ng/L) (Ng/L) (Ng/L) (Ng/L) (Ng/L) <br /> 8/15/2012 GW-INF 19 <50 2,400 1,100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 8/15/2012 MID-1 <50 200 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 8/15/2012 MID-2 <50 <50 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 8.7 <br /> 8/15/2012 MID-3 -- <50 <50 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 8/15/2012 MID-4 <50 <50 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 8/15/2012 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 /> 9/21/2012 GW-INF 150 5,800 2,800 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 7.4 <br /> 9/21/2012 MID-1 <50 270 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 7.7 <br /> 9/21/2012 MID-2 <50 <50 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 9.9 <br /> 9/21/2012 MID-3 <50 <50 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 9/21/2012 MID-4 29 <50 92 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 9/21/2012 GW-EFF 29 <1.0 <50 110 <100 <0.10 <0.10 <0.10 <0.10 <5.0 <0.50 <0.50 <0.50 <12 <br /> 10/19/2012 GW-INF 170 17,000 10,000 0.75 <0.50 <0.50 <0.50 < <0.50 <0.50 10 <br /> 10/19/2012 MID-1 <50 220 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 8.1 <br /> 10/19/2012 MID-2 <50 <50 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 9.2 <br /> 10/19/2012 MID-3 <50 <50 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 10/19/2012 MID-4 <50 <50 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 10/19/2012 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 /> 11/28/2012 GW-INF <50 940 120 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 11/28/2012 MID-1 <50 180 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 11/28/2012 MID-2 <50 <50 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 8.3 <br /> 11/28/2012 MID-3 <50 <50 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 11/28/2012 MID-4 <50 <50 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 11/28/2012 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 /> 12/21/2012 GW-INF <50 1,400 510 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 12/21/2012 MID-1 - -- <50 330 120 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 5.3 <br /> 12/21/2012 MID-2 - -- <50 <50 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 5.9 <br /> 12/21/2012 MID-3 - -- <50 <50 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 12/21/2012 MID-4 - -- <50 <50 <100 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 12/21/2012 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 -- =Not analyzed or not applicable <br /> ETBE =Ethyl tertiary-butyl ether < =Value is less than laboratory reporting limit <br /> lbs =Pounds pH =Concentration of hydrogen ions <br /> ATC =Authority To Construct TAME =Tertiary-amyl methyl ether <br /> BTEX=Benzene,Toluene,ethyl-Benzene,and Total Xylenes TBA=Tertiary-butyl alcohol <br /> PAH =Polynuclear Aromatic Hydrocarbons TPHd =Total petroleum hydrocarbons as diesel(diesel range organics) <br /> GAC =Granular Activated Carbon TPHg =Total petroleum hydrocarbons as gasoline(gasoline range organics) <br /> pg/L =Micrograms per liter TPHo =Total petroeum hydrocarbons as motor oil(motor oil range organics) <br /> mg/L =Milligrams per liter TRPH =Total recoverable petroleum hydrocarbons <br /> MtBE =Methyl tert-butyl ether HEM w/SGT =Hexane extractable material with silica gel treatment <br /> POTW =Publically Owned Treatment Works <br /> I:\Tidewater\TW Stockton(P2A)\Engineering\O&M\Tables\O&M Tables 2012\4Q12\Parcel 2A OM Tables 4Q12.xlsx Page 15 of 16 <br />