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Table 1. Summary of Soil Vapor Extraction and Treatment System Influent Data <br /> ARCO Station 2093,Tracy,California <br /> Start-update: 114196 <br /> Sample Average flow Days in Down days Percent Influent concenttution m Removal rnte lbs/day Net removal lbs&lZallons <br /> date Period rate elm petiod in period operational TPH-G B TPH-G B TPH-G B <br /> 12/15/95 Source test NA NA NA NA 1200 57.0 70 0.5 NA lbs NA lbs <br /> 114196 Startup 95 20 19.6 2% 1455 NA 52 NIA 22 lbs NA lbs <br /> 1126196 1/4/96-1/26/96 95 22 0.1 99% 931 NA 33 NIA 722 lbs NA lbs <br /> 2126196 1/26/96-2126196 75 31 22 31% 713 NA 20 NIA 189 lba NA lbs <br /> 3127196 2126196-3127196 75 30 30 2% 713 NA 20 NIA 9 lbs NA lbs <br /> Totals and averages 114196-3127196 85 103 71 31% 953 NA 31 NA 942 lbs 0 lbs <br /> for reporting period 152 gals 0 gals <br /> Totals and averages 12/15195-3127/9 85 103 71 31% 1002 57 39 0.5 942 lbs 0 lbs <br /> cumulative 152 gals 0 gals <br /> Sample calculations: <br /> Removal rate calculation: <br /> Ibslday=(gmlmole ibe/day=(gmlmole)*(umole/mole)*(motes/10E+6 umoles)*(IOE+3 mglgm)4(1.177 mole/cubic feet)*(2.204640E-6 Ib/mg)*(60 min/hr)*(cubic feet/min)*(24 hrs/d <br /> where(gmlmoln)is molecular weight; (umolea/mole)is ppm influent concentration;molecular weights of TPH-G and Benzene are I00.2 and 76.1,respectively <br /> 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. <br /> Gallons removal calculation: <br /> ,gallons-removed' s - a on egatt_to lbs. (density:for TPH=G is 62`benzene is 7:32-- <br /> i <br /> I, <br /> IEAARCO$WWorkcopM 194AVE S2093.XLM <br />