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Table 8 <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 Operating System Flow VOC VOC VOC' <br /> Reading Reading Flow Discharged Flow Rate Rate Temperature Temperature Pressure Rate [FID] [FID] Removed <br /> Date hours al al al al/da m °F °F in H2O scfm my my Ib/da H'2 Notes <br /> Equation: <br /> [Avg of consecutive(Inf Con-Eff Con)(ppmv)] <br /> VOC Removed/day= ------------------------------------------------------ X[86.17(g/mole)]X[1 lbs/453.59 g]X[1.2641 moles/1 cf]X[Avg of consecutive flow rates(scfm)]X[60 min/hr]X[24 hr/day] <br /> [1,000,000 parts] <br /> Definitions: <br /> gal =gallons scfm =standard cubic feet per minute PAH =Polycyclic Aromatic Hydrocarbons <br /> gpm =gallons per minute VOC=Volatile Organic Compound acfm=actual cubic feet per minute <br /> 'F=degrees Fahrenheit ppmv=parts per million by volume GAC=Granular Activated Hydrocarbon <br /> inHg=inches of Mercury gal =gallons <br /> gpm =gallons per minute ATC =Authority to Construct <br /> Notes: <br /> a =System switched to operate in catalytic mode <br /> b=System switched to operate in thermal mode. <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 separator transfer pump. Repairs were made and the system was restarted on October 4,2010. <br /> 16=System hour meter was replaced. 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 /> 17=System shut down with regulatory approval for remainder of 4Q11 due to declining influent concentrations. Will be restarted following rebound testing. <br /> 18=System restarted <br /> 19=System measurements not collected during this visit. <br /> 20=System measurements taken post blower on and after this date.System Vacuum now System Pressure in units of'in H2O' <br /> 21 =VOCs measured with a photoionization detector on this date. <br /> 22=System off,system measurments not collected on this date. <br /> I:\Tidewater\TW Stockton(P2A)\Engineering\O&M\Tables\O&M Tables 2013\3Q13\Parcel 2A OM Tables 3Q13.xlsx Page 4 of 4 <br />