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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 VOC' <br /> Reading Reading Flow Discharged Flow Rate Rate Temperature Vacuum Rate Rate [FID] [FID] Removed <br /> (hours) (gal) (gal) (gal) (gal/day) (gpm) (°F) (inHg) (acfm) (Flow) <br /> (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. <br /> gals <br /> SPH -- - -- --6 -- 6 - 1,731 1,731 <br /> TPHd -- - 359.9 50.1 359.9 50.1 9,485 1,321 9,485 1,321 <br /> TPHo -- -- 274.9 36.1 274.9 36.1 -- 5,090 668 5,090 668 <br /> TPHg 56.3 9.2 0.6 0.1 56.9 9.3 7,439 1,220 150 25 7,590 1,244 <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 I I 10.0 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)•Pt„ <br /> Tstd =temperature at standard conditions(530 Rankine) <br /> Pabs=atmospheric pressure at standard conditions minus manifold vacuum(inHg) <br /> Pam =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 <br /> =p 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 /> I:\Tidewater\TW Stockton(Parcel 2A-0415)\Engineering\O&M\Tables\O&M Tables 2010\3Q10\Parcel 2A OM Tables 3Q10.xlsx Page 3 of 3 <br />