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0 • <br /> Table 1. Soil Vapor Extraction and Treatment System Influent Data,ARCO Facility 2133, Stockton, California <br /> Continuous operation began on 1/]1195 <br /> Sample Average flow Days in Down days Percent Influent concentration ppmv Removal rate,lbs/day Net removal,lbs&gallons <br /> date Period rate cfm period in period operational TPH-G B TPH-G B TPH-G B <br /> 1/1 1/95 Source test 100 1 0 100% 590 1 7 22 1 005 22 lbs 00 lbs <br /> 2/9195 1/11195-219195 80 29 1 97% 480 4 5 144 Oil 403 lbs 29 lbs <br /> 3/28/95 219/95-3128/95 80 47 34 28% 160 062 4 8 001 62 lbs 02 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 4/4195-513195 100 29 1 97% 460 12 172 035 482 lbs 98 lbs <br /> 5/15195 5/3/95-5115195 100 12 1 96% 340 8 8 12 7 026 146 lbs 3 0 lbs <br /> 6/12195 5/15/95-6112195 100 28 3 89% 240 18 9 0 005 225 lbs 13 lbs <br /> 7/8195 6/12/95-7/8/95 100 26 0 100% 140 <0 016 5 2 000 136 lbs 00 lbs <br /> 8/22/95 7/8195-8122195 80 45 0 100% 1200 41 359 096 1618 lbs 43 1 lbs <br /> 9/19195 8/22/95-9119195 100 28 0 100% 480 <0 016 18 0 000 503 lbs 00 lbs <br /> 10/23/95 9119195-10123/95 100 34 0 100% 240 <0 016 9 0 000 306 lbs 00 lbs <br /> 11/15/95 0/23/95-11115/9 100 23 0 100% 170 4 7 6 4 000 146 lbs 00 lbs <br /> 12/15/95(a) 1115/95-1211519 100 30 6 80% 31 -- 12 -- 28 lbs -- lbs <br /> 1/26/96 12115/95-1/26/96 100 42 35 I7% 117 -- 4 4 -- 31 lbs -- lbs <br /> 2/14/96 1126/96-2/14/96 100 19 0 100% 916 -- 343 -- 652 lbs -- lbs <br /> 3127/96 (b) 2/14196-3127196 100 42 33 21% 10 0 4 3 lbs lbs <br /> 1018/96 (c) 10/8/96-10/18/96 100 10 0 100% 33 12 12 lbs -- lbs <br /> Totals and averages 1/1197-3/31/97 -- 90 90 0% -- -- -- - 00 lbs 00 lbs <br /> for reporting period 00 gals 00 gals <br /> Totals and averages 1111/95-3131197 95 542 204 62% 341 84 119 0 15 4815 lbs 604 lbs <br /> cumulative 777 gals 8 3 gals <br /> Sample calculations <br /> Mass extraction rate calculation <br /> lbs/day=("x"ppm/1,000,000)*("Q"fl^3/min)*("M W"Ib/Ib-mol)*(60 mm/hr)*(24 hr/da))*(Ib-mol/379 5 f1^3) <br /> where "x"is influent concentration in ppm <br /> "Q"is the average flow rate in ft^3/min <br /> "M W"is the molecular weight in Ib/lb-mol (100 2 for TPH-G,78 1 for benzene) <br /> Gallons removal calculation <br /> gat removed=lbs/density,density in Ib/gal(densit) for TPH-G is 6 2,benzene is 7 32) <br /> Notes <br /> (a)Beginning 12115/95,samples analyzed in the field"ith a portable Photo Ionization Dectector(PID) <br /> (b)System oft from 3/27/96 through 10/8/96 due to high groundwater levels <br /> (c)System turned off on 10/18/96 due to low influent concentrations <br /> "--"=Not available or not applicable <br />