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Table 18 <br /> Apartment 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 VOC =Volatile Organic Compound <br /> inHg = Inches of mercury ppmv = Parts per million by volume <br /> acfm =Actual cubic feet per minute Ib = Pound <br /> scfm =Standard cubic feet per minute SJVAPCD = San Joaquin Valley Air Pollution Control District <br /> [ ] = Indicates reference to equation ATC =Authority to Construct <br /> FID = Flame Ionization Detector <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. Hexane was used <br /> 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 56 curve with temperature being the average for the system. <br /> e = Flame Out <br /> Equation SCFM —s: ACFM • Ts,d • (Pubs) <br /> 1 <br /> 460+ T). Ptm <br /> Tstd Temperature at standard conditions(530 Rankine) <br /> Pabs Atmospheric pressure at standard conditions minus manifold 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 2010\4Q10\Parcel 2A OM Tables <br /> 4Q10.xlsx Page 2 of 2 <br />