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Table 14 <br /> Dual Phase Extraction System-Soil Vapor Influent Analytical Data and Mass Recovery <br /> Parcel 2A-L&M OU <br /> 666 West Weber Avenue,Stockton,CA <br /> In order to show best estimate,recovery calculations assume one-half of the detection limit when the compound is reported as less than the detection limit. <br /> Well Influent Concentrations TPHg Recovery TPHd Recovery Benzene Recovery MtBE Recovery <br /> Hour Field Recovery Recovery Recovery Recovery <br /> Meter Flow Rate Period Net Cumulative Rate Period Net Cumulative Rate Period Net Cumulative Rate Period Net Cumulative <br /> Date Sample Reading Rate TPHg TPHd Benzene MtBE (lbs/day) Recovery Recovery (lbs/day) Recovery Recovery (lbs/day) Recovery Recovery (lbs/day) Recovery Recovery <br /> ID Notes (hours) (scfm) (ppmv) (ppmv) (ppmv) (ppmv) [1] (lbs)[2] (lbs)[3] [1] (lbs)[2] (lbs)[3] [1] (lbs)[2] (lbs)[3] [1] (Ibs)[2] (lbs)[3] <br /> Notes: <br /> a=System permitted under ATC number N-4878-1-1. Source test for air board. Extracted groundwater being held in onsite holding tank. System shutdown following source test. <br /> b=System started for 24-hour collection of vapor PAH samples. <br /> c=System shut down following vapor PAH sampling. PAH results outside of ATC limits(no detectable PAHs in influent vapor stream);alternate ATC needed to operate. <br /> d =ATC Number N-4878-1-2 issued 7/20/2004.System restarted. <br /> e=Source test for air board. System shut down following source test due to on-site excavation activities. <br /> f=System shut down following completion of vapor PAH sample collection. <br /> g =System shut down since 6/3/2005 no discharge and no sampling activities. <br /> h =System sampled following startup. <br /> i =System running solely on ASVE-1 through ASVE-6. <br /> j =System air flow rate and temperature based on historical averages due to inadvertent omission from field notes. <br /> k=System not sampled for analytical due to electrical problems with the extraction blower.Removal calculation based on previous months analytical data. <br /> I =SV-INF collected one day after O&M readings due to collapse of sample bag collected on 7/30/2007. <br /> m =Diesel analyzed by Air Toxics LTD via EPA Method TO-17. <br /> Kiff Analytical Molecular Weights: Specific Weight: <br /> TPHg=95 g/mol Specific Weight of gasoline=6.1 pounds per gallon <br /> Benzene=78.1 g/mol Specific Weight of benzene=7.4 pounds per gallon <br /> MtBE=88.2 g/mol Specific Weight of MtBE=6.18 pounds per gallon <br /> Specific Weight of diesel=7.18 pounds per gallon <br /> Air Toxics Molecular Weights: <br /> TPHd= 233 g/mol <br /> Equations: <br /> [Average of consecutive concentrations(ppmv)] <br /> Recovery Calculations=------------------------------------------------------------ X[Molecular Weight(g/mole)]X[1 lbs/453.59 g]X[1.2641 moles/1 cf]X[Average of consecutive Flow Rates(scfm)]X[60 min/hr]X[24 hr/day]=XX.XXX lbs/day <br /> [1,000,000 parts] <br /> I:\Tidewater\TW Stockton(P2A)\Engineering\O&M\Tables\O&M Tables 2011\3Q11\Parcel 2A OM Tables 3Q11.xlsx Page 3 of 3 <br />