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� i • Table 1. Soil Vapor Extraction and Treatment System Influent Data, ARCO Station 2133, Stockton, California Continuous operation began on 1111195 Influent Removal rate, Net removal, t Sample Average flow Days to Down days Percent concentration,ppm lbs/day lbs&gallons date Penod rate,cfm penod. to penod. operational TPH-G B TPH-G B TPH-G B 1111195 Source test 100 1 0 100% 590 17 221 005 22 lbs 00 lbs 219195 1111195 219195 80 29 1 97% 480 45 144 0 1 l 403 lbs 29 lbs 3/28195 219195-3128195 80 47 34 28% 160 062 48 � 001 62 lbs 02 lbs 414195 3128195-414195 80 7 0 100% 190 047 57 001 40 lbs 01 lbs 513195 414195-513195 100 29 1 97% 460 12 172 035 482 lbs 99 lbs 5115195 513195-5115195 100 12 1 96% 340 88 127 026 146 lbs 30 lbs 6112195 5115195-6112195 100 28 3 89% 240 18 90 005 225 lbs 13 lbs 718195 6112195-718195 100 26 0 100% 140 a0 016 52 000 136 lbs 00 lbs 8122195 718195-8122195 80 45 0 100% 1200 41 359 096 1618 lbs 43 1 lbs 9119195 8122195-9119195 100 28 0 100% 480 <0016 180 000 503 lbs 00 lbs 10/23/95 9119195-10123195 100 34 0 100% 240 c0 016 90 000 306 lbs 00 lbs 11/15/95 10/23/95 11/15/95 100 23 0 100% 170 47 64 000 146 lbs 00 lbs 12!15195(a) 11115195-12115195 100 30 6 80% 31 NA 12 NA 28 lbs NA lbs 1126196 (a) 12/15195-1126196 100 42 35 17% 117 NA 44 NA 31 lbs NA lbs 2114196 (a) 1126196-2114196 100 19 0 100% 110 NA 41 NA 78 lbs NA lbs 3127196 (a) 2114196-3127196 100 42 33 21% 103 1 NA 39 NA 35 lbs NA lbs Totals and averages 12/15/95-3127196 100 103 68 34% 110 NA 41 NA 144 lbs NA lbs for reporting period 23 gals NA gals Totals and averages 1111195-3127196 95 442 114 74% 316 84 109 015 4261 lbs 604 lbs cumulative 687 gals 8 3 gals Sample calculations Removal rite Cdlculabon Ib%fday—(gmlmole)*(umolelmote)*(molest 14C+6 umole%)*(l OC+3 mg/gm)*(1 177 mole/cubic feet)*(2 204640E-6 lb/mg) *(60 mm/hr)*(cubic feet/mtn)*(24 hrslday) where(gm/mole)i%molecular weight,(umoleVrnote)15 ppm influent concentration molecular weights of TPH-G and Benzene are 100 2 and 78 1 For pounds cumulative removal we used the removal Ib/day result and multiplied it by the difference to the number of days between the current and previou%sampling event Gallons removal calculation gallons removed—lbs*gallon/density in lbs(density for 17P1i G rs 6 2,benzene to 7 32) Notes (a)—Samples analyzed in the field with it portable Photo Ionization Declector(PID) NA-Not available (E%ARC0SM1WorkcopV%6196%VEs2133 XtW)