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Table 10 <br /> Dual Phase Extraction System-Operating Data <br /> Parcel 2A-L&M OU <br /> 666 West Weber Avenue,Stockton,CA <br /> Period Influent Effluent <br /> Hourmeter Totalizer System Volume Average Flow Well Field System Flow Flow VOC VOC VOC1 <br /> Reading Reading Flow Discharged Flow Rate Rate Temperature Vacuum Rate Rate [FID] [FID] Removed <br /> Date (hours) (gal) (gal) (gal) (gal/day) (gpm) (°F) (inHg) (acfm) (scfm) (ppmv) (ppmv) (Ib/day) pH 12 Notes <br /> Constituent Period Vapor Period Liquid Period Total Historical Vapor Historical Liquid Historical Total <br /> lbs. gals lbs. gals lbs. gals lbs. gals lbs. gals lbs. gals <br /> SPH - -- - 6 - 6 1,731 1,731 <br /> TPHd - -- 62.8 8.7 62.8 8.7 9,548 1,330 9,548 1,330 <br /> TPHo -- -- 28.6 3.7 28.6 3.7 -- 5,119 672 5,119 672 <br /> TPHg 114.0 18.7 1.1 0.2 115.1 18.9 7,553 1,238 152 25 7,705 1,263 <br /> Benzene 0.00 0.00 0.0 0.00 0.0 0.00 5.03 0.69 0.06 0.01 5.09 0.69 <br /> MtBE 0.00 0.00 0.0 0.00 0.0 0.00 0.00 0.00 0.00 0.00 0.01 0.00 <br /> TBA -- // 0.0 0.00 0.0 0.00 1.07 0.16 1.07 0.16 <br /> SCFM <br /> Equation: ACFM •T,-lP as <br /> = <br /> 460+T)•P,m <br /> Tsid =temperature at standard conditions(530 Rankine) <br /> Pabs=atmospheric pressure at standard conditions minus manifold vacuum(inHg) <br /> Patin =atmospheric pressure at standard conditions(29.92 inHg) <br /> Definitions: <br /> gal =gallons scfm =standard cubic feet per minute <br /> gpm =gallons per minute VOC=Volatile Organic Compound <br /> °F=degrees Fahrenheit ppmv=parts per million by volume <br /> inHg =inches of Mercury gal=gallons <br /> gpm =gallons per minute ATC=Authority to Construct <br /> °F=degrees Fahrenheit GAC=Granular Activated Hydrocarbon <br /> acfm =actual cubic feet per minute PAH=Polycyclic Aromatic Hydrocarbons <br /> Notes: <br /> Column under heading VOC(Hexane)Removed(Ib/day) added 2Q10 to track removal rate of total VOCs. <br /> 1 =VOC represented as Hexane(molecular weight 86.17)for VOC vapor mass removal rate calculation. Hexane was used because it was most representative of the lower carbon range <br /> organics. <br /> 2=System permitted under ATC number N-4878-1-1. Source test for air board. Extracted groundwater being held in onsite holding tank. System shut down following source test. <br /> 3=System started for 24-hour collection of vapor PAH samples. <br /> 4=System shut down following completion of vapor PAH sample collection. PAH results outside of ATC limits(no detectable PAHs in influent vapor stream);alternate ATC needed to operate. <br /> 5=Approximately 5,840 gallons of groundwater stored in holding tank discharged to sanitary sewer. <br /> 6=ATC Number N-4878-1-2 issued 7/20/2004.System restarted. <br /> 7=Source test for air board. System shut down following source test due to on-site excavation activities. <br /> 8=Samples collected from wastewater treatment system.Carbon change-out needed. <br /> 9=System shut down following completion of vapor PAH sample collection. <br /> 10=System non-operational since 5/2005.No sampling and no discharge activities occurred. <br /> 11 =System effluent sampled on 7/6/2005 following startup. <br /> 12=Start-up on fresh GAC <br /> 13=pH measurement recorded in the field beginning December 9,2009. <br /> 14=Hourmeter and totalizer readings recorded on Feb 4,2010,all else occurred on Feb 5,2010. <br /> 15=System shutdown on August 28,2010 due to the failure of the oil-water seperator transfer pump. Repairs were made and the system was restarted on October 4,2010. <br /> 16=DPE wells were closed during pilot test conducted from 11/16/10 to 11/19/10. Nowell field temperature or flow rate were collected;therefore,values from the most recent visit with the same system <br /> vacuum was used instead(07/12/10). <br /> \\Us1345-f01\secor\projects-077\Tidewater\TW Stockton(Parcel 2A-0415)\Engineering\O&M\Tables\O&M Tables 2010\4Q10\Parcel 2A OM Tables 4Q10.xlsx Page 3 of 3 <br />