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i • M Table 1. Soil Vapor Extraction and Treatment System Influent Data, ARCO Facility 2133, Stockton, California Continuous operation began on 1/11195 I Sample Average/low Days in Down days Percent Influent concentration m Removal rate lbs/day Net removal lbs&gallons date Period rate of n period in period o erational TPH-G B TPH-G B TPH-G B 1111/95 Source test 100 1 0 100% 590 1 7 22 l 005 22 lbs 00 lbs 219195 1111/95 2/9/95 80 29 1 97% 480 45 144 0 11 403 lbs 29 His 3128195 2/9/95 3128/95 80 47 34 28%u 160 062 48 001 62 lbs 02 lbs 414195 3/28/954/4/95 80 7 0 100`7 190 047 5 7 001 40 lbs 0 1 lbs 5/3195 4/4/95-513195 100 29 1 97%v 460 12 172 035 482 lbs 9 8 lbs 5/15/95 5/3/95-5115195 100 12 1 96% 340 88 127 026 146 lbs 30 lbs 6/12/95 5/15/95-6112195 100 28 3 89% 240 1 8 90 005 225 lbs 1 3 lbs 7/8195 6112195-718195 100 26 0 100% 140 <0 016 52 000 136 lbs 00 lbs 8/22/95 718195-8/22195 80 45 0 100`7 1200 41 35 9 096 1618 lbs 43 1 lbs 9/19/95 8122195-9119/95 100 28 0 100% 480 <0 016 180 000 503 lhs 00 lbs 10/23/95 9/19/95-10123/95 100 34 0 100% 240 <0 016 90 000 306 lbs 00 lbs 11115/95 10/23/95-11115195 100 23 0 100% 170 47 64 000 146 lbs 00 lbs 13/15/95 (a) 11115195-12115195 100 30 6 80% 31 NA 1 2 NA 28 lbs NA lbs 1126196 12/15/95 1126196 t00 42 35 17! 117 NA 44 NA 31 lbs NA the 2/14/96 1126196 2/14/96 100 19 0 100^/ 110 NA 4 I NA 78 lk NA Ihv 3137196 2/14/96-3/27/96 100 42 33 2t% 103 NA 3 9 NA 35 lbs NA lbs 4/15/96 3P'7/96-4/15/96 NA 19 19 0% NA NA NA NA NA lbs NA lbs 5115/96 4115196 5115196 NA 30 30 0% NA NA NA NA NA lbs NA lbs 6121196 5115196 6121/96 NA 37 37 0`k NA NA NA NA NA lbs NA His Totals and averages 3127/96-6121196 NA 86 86 0`7 NA NA NA NA NA lbs NA lbs for reporting penod NA gals NA gals Towls and averages 1111195 6121196 95 528 200 62% 316 84 109 0 IS 4261 lbs 604 lbs cnrnrdalive 687 gals 8 3 gals Sample calculations Runoval rate calculation lbs/day=(gm/molc)*(umole/mole)*(moles/IOE+6 umoles)*(10E+3 mg/gm)*(I 177 molelcubic feet)*(—)204640E-6 Iblmg)*(60 rant/hr)*(cubic feet1min)*(24 hrs/day) where(gmlmole)is molecular weight,(umoleslmole) is ppm mfluu1t concentration, molecular weights of TPH G and Benzene are 1002 and 78 1, respectively For pounds cumulatn+c n.movtd we used the rLmoval Ib/day result and multiplied A by the difterence in the number of days between the current and previous samphng went Gallons removal calculation allons removed = lbs* allon/densis in lbs(density for TPH-G is 6 2, benzene is 7 32) Notes (a) = Beginmg 12115195, samples analyzed in the field with a portable Photo Ionization Decteetor(PID) NA = Not available