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Table 21 <br /> Soil Vapor Extraction System-Operating Data <br /> Parcel 2A-L&M OU <br /> 666 West Weber Avenue, Stockton, CA <br /> Definitions: <br /> °F = Degrees Fahrenheit FID = Flame Ionization Detector <br /> inHg = Inches of mercury VOC =Volatile Organic Compounds <br /> acfm =Actual cubic feet per minute ppmv = Parts per million by volume <br /> [ ] = Indicates reference to equation SJVAPCD =San Joaquin Valley Air Pollution Control District <br /> scfm =Standard cubic feet per minute ATC =Authority to Construct <br /> Notes: <br /> -Column under heading VOC(Hexane)Removed(Ib/day)added 2Q10 to track removal rate of total VOCs. <br /> a =VOC reported as Hexane(molecular weight 86.17)for VOC vapor mass removal rate calculation. <br /> Hexane was used because it was most representative of the lower carbon range organics. <br /> b =System inspected by the air board and started on 5/31/2007. <br /> c =Vapor flow data collected as SCFM. <br /> d = Flow rate(acfm)derived from Roots 59 curve with temperature being the average for the system. <br /> Equations: <br /> Ill ACFM T. (P°j [2]VOC Removed (Ib/day) <br /> SCFM = 460+T)• P tm removal rate=influent VOC -effluent VOC <br /> Tstd =Temperature at standard conditions(528 Rankine) <br /> Pabs =Atmospheric pressure at standard conditions minus manifold <br /> vacuum (inHg) <br /> Patm=Atmospheric pressure at standard conditions(29.92 inHg) <br /> T = Manifold vapor temperature reading (°F) <br /> Permits: <br /> -Air emissions are permitted under SJVAPCD ATC Number N-4878-2-0. <br /> \\Us1345-f01\secor\projects-077\Tidewater\TW Stockton (Parcel 2A-0415)\Engineering\O&M\Tables\O&M Tables <br /> 2010\4Q10\Parcel 2A OM Tables 4Q10.xlsx Page 2 of 2 <br />