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. Table2l Sod Vapor Extraction and Treatment Syst fluent Data,ARCO Station 434, Lodi,California Start-up date 6/3191 Sample Average Ilow Days in Down days Percent Influent concentration ppmv(a) Removal rate,lbs/day Nt,t removal,lbs&gallons date Period rate cfm period in period operational TPH-G B TPH-G 13 TI'I I-G 13 8/16/94 7 6 94-$ 161)4 62 41 3 9 % 261 19 6 0 230 lbs 0 lbs 919194 8/t6/94 9/27194 63 42 1 98% 230 <0016 5 0 221 Ibs 0 lbs 1014/94 9(27/94-10/4/94 62 —7 0 100% 130 <0007 3 0 21 lbs 0 tbs 1113(94 10/4/94-11/3194 62 30 1 97% 340 <0083 8 0 228 lbs 0 lbs 1219/94 11(3(94-12127194 62 54 2 96% 110 <0012 3 0 132 lbs 0 Ibs 1/6/95 12127194-1/18195 60 22 37 83% 76 0035 2 0 31 lbs 0 lbs 216/95 1/18195-2/13195 53 26 161 38% 140 l 1 3 0 28 lbs 0 Ibs 3/7/95 2/13/95-3116195 55 31 32 90% 89 0 18 2 0 51 lbs 0 lbs 4/5195 3/16/95-4/5/95 60 29 0 100% 24 0 1 0 16 Ibs 0 Ibs 5111195 (b) 415195-5/11/95 20 36 22 39% 33 0 0 0 3 lbs 0 Ibs 5/18195 5/11/95-5/t8195 20 7 0 100% 66 0 0 0 3 lbs 0 Ihs 5/16/95 5118/95-5126195 20 8 0 100% 80 0 1 0 5 Ibs 0 Ibs 6/21/95 5/26/95-6121/95 22 26 0 100% 44 0 0 0 9 Ibs 0 lbs 718195 6/21/95-7/8/95 22 17 0 100% 77 <M6 1 0 ll Ibs 0 lbs 8/22/95 718195-8/22195 22 45 0 100% 54 <016 0 0 20 Ibs 0 lbs 911 U95 8/22/95-9111195 22 20 0 100% 68 <016 1 0 11 lbs 0 lhs 12/31/95 9/11/95-12131/95 22 111 97 13% SYSTEM TURNED OFF ON 9125195 0 lbs 0 lbs 1 f2619 12131(96-3(31/96 26 91 55 40% 87 f NA I 1 I NA 30 Ibs NA lbs SYSTEM OPERATED 119196-2114195 Totals and averages 1/1/96-3/31196 26 91 55 40% 87 NA I NA 30 lbs NA lbs for reporting period 5 gals NA gals Totals and averages 6131/91-3/31196 80 1772 265 85% 1113 5 41 0 50862 lbs 153 lbs cumulative 8203 gals 21 gals Sample calculations Removal rate calculation lbs/day=(gm/mole)•(umole/mole)•(m011s/IOC+6 umoles)'(10C+3 mg/gm)*(I 177 moltdcubi,_fect)`(2 204640E 6 lb/mg)1(60 mmRu)'(cubie l"Vmm)"(24 lirs/day) where(gm/mote)is molecular weight,(umoles/mole)is ppm influent concentration molecular weights orTPH-G and Benzene are 100 2 and 78 1 respectively For pounds cumulative removal we used the removal lb/day result and multiplied it by the difference in the number of days between the current and previous sampling event Gallons removal calculation(for TPH) gallons removed—Ibs• allon/denst[ in Ibs(dinsitX for TPI -G is 6 2 bcm ene is 7 32 (a)From start-up through.lune 1992 influent samples were not taken because there was no sample tap on the inlet to the catalytic oxidizer Therefore,the influent concentrations(in parts per million by volume)are an estimate (b)The callytic oxidizer was taken off-line and replaced with a biofrlter system on 5111/95