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Table 1. Soil Vapor Extraction and Treatment System Influent Data,ARCO Facility 2133, Stockton, California <br /> Continuous operation began on 1111195 <br /> Sample Average flow Days in Down days Percent Influent concentration,ppmv Removal rate,lbs/day Net removal,lbs&gallons <br /> date Pi riod rate,efin pLried in period operational fPTTG B TPH-G B TPH-G B <br /> 1/11/95 Source test 100 1 0 100% 590 17 22 1 005 22 lbs 00 lbs <br /> 219/95 1111195-219/95 80 29 1 97% 480 45 144 0 11 403 lbs 29 lbs <br /> 3/28/95 2/9195-3/28/95 80 47 34 28% 160 062 48 001 62 lbs 0 2 lbs <br /> 4/4/95 3/28/95-4/4195 80 7 0 100% 190 047 5 7 001 40 lbs 0 1 lbs <br /> 5/3195 4/4/95-5/3195 100 29 1 97% 460 12 172 035 482 lbs 98 lbs <br /> 5/15/95 5/3/95-5/15/95 100 12 1 96% 340 8 8 127 026 146 lbs 30 lbs <br /> 6/12195 5/15/95-6112195 100 28 3 89% 240 1 8 9 0 005 225 lbs 13 lbs <br /> 718195 6/12195-7/8/95 100 26 0 100% 140 <0 016 5 2 000 136 lbs 0 0 lbs <br /> 8/22/95 7/8195-8/22/95 80 45 0 100% 1200 41 35 9 096 1618 lbs 43 1 lbs <br /> 9119195 8122/95-9119/95 100 28 0 100% 480 <0 016 180 000 503 lbs 00 lbs <br /> 10/23/95 9/19/95-10/23/95 100 34 0 100% 240 <0 016 90 000 306 lbs 00 lbs <br /> 11115195 10/23/95-11/15/95 100 23 0 100% 170 47 6 4 000 146 lbs 00 lbs <br /> 12/15/95 (a) 11115/95-12/15/95 100 30 6 80% 31 NA 12 NA 28 lbs NA lbs <br /> 1/26/96 12/15/95-1126196 100 42 35 17 117 NA 4 4 NA 31 lbs NA lbs <br /> 2114196 1126/96-2/14196 100 19 0 100% 916 NA 343 NA 652 lbs NA lbs <br /> 3/27/96 (b) 2/14196-3/27/96 100 42 33 21% 10 NA 04 NA 3 lbs NA lbs <br /> 10/8/96 (e) 1018196-10/18/96 100 10 0 100% 33 NA 1 2 NA 12 lbs NA lbs <br /> Totals and averages 1011196-12/31/96 100 92 82 11% 33 NA 12 NA 12 lbs NA lbs <br /> for rc pornng period 2 gals NA gals <br /> Totals and averages 1/11/95-12/31/96 95 452 114 75% 341 8 4 11 9 0 15 4815 lbs 604 lbs <br /> cumulative 777 gals 8 3 gals <br /> Sample calculattons <br /> Mass extraction rate calculation <br /> lbs/day=("x"ppm/1,000,000)* ("Q"ft^31mm)*("M W"lb/lb-mol)*(60 min/hr)*(24 hr/day)*(Ib-mol/379 5 ft^3) <br /> where ..x"is influent concentration in ppm <br /> "Q"is the average flow rate in ft^3/mm <br /> "M W"is the molecular weight in lb/lb-mol (100 2 for TPH-G,78 1 for benzene) <br /> Gallons removal eafuilation <br /> gal removed=lbs/density,density in Ib/gal(density for TPH-G is 6 2,benzene is 7 32) <br /> Notes <br /> (a)13egmmng 12115195,samples analyzed in the field with a portable Photo Ionization Decteclor(PID) <br /> (b)System oil from 3127/96 through 10/8196 due to high groundwater levels <br /> (c)System turned off on 10/18/96 due to low influent concentrations <br /> NA=Not available <br />