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Table 19 <br /> Apartment Soil Vapor Extraction System-Soil Vapor Influent Analytical Data and Mass Recovery <br /> Parcel 2A-L&M OU <br /> 666 West Weber Avenue,Stockton,CA <br /> Definitions: <br /> <=Value is less than laboratory reporting limit <br /> --=Data not available <br /> lbs=Pounds <br /> MtBE=Methyl tert-butyl ether <br /> ppmv=Parts per million by volume <br /> scfm=Standard cubic feet per minute <br /> TPHg=Total petroleum hydrocarbons as gasoline <br /> 3 <br /> Notes: Cones (ppmv�•Molecular Weight •Flow ft 60 min 24 hour <br /> a=System permitted under ATC number N-487 -2,-0. Source test for air .boar lb min (hour ) day <br /> 1 Recovery Rate <br /> Molecular Weights: Equations: <br /> day V, ft 3).106 <br /> TPHg=102 g/mol <br /> Benzene=78 g/mol (day <br /> MtBE=88 g/mol Recovery Rate I• Hour Meter Reading t —Hour Meter Reading[2] Period Net Recovery (lbs�= J <br /> Specific Weight: r hour 1 <br /> Specific Weight of TPHg=6.1 pounds per gallon 24\ J <br /> Specific Weight of benzene=7.4 pounds per gallon day <br /> Specific Weight of MtBE=6.18 pounds per gallon <br /> [3] Cumulative Recovery (lbs)_ Period Net Recovery lbs <br /> [4] Period Pounds Removed (lbs)=Reporting Period Net Recovery (lbs) <br /> [5] Period Gallons Removed (gallons) = Period Pounds Removed (lbs) <br /> Density Clb <br /> 1 <br /> 9 <br /> [6] Total Pounds Removed (lbs)=Cumulative Recovery lbs <br /> [7] Total Gallons Removed gallons )= Total Pounds Removed (lbs) <br /> DensityC lb ) <br /> l gallon J <br /> Vjde =Volume of 1.0 mole of an ideal gas is 386.6 ft 3 at 70'F and 29.92 inHg <br /> I:\Tidemter\TW Stockton(Parcel 2A-0415)\Engineering\O&M\Tables\O&M Tables 2010\4Q10\Parcel 2A OM Tables 4Q10.xlsx Page 2 of 2 <br />