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0 Table 1. Soil Vapor Extraction treatmentp System Influent Data <br /> Stan-update 1/4/96 ARCO Station 2093,Tracy, California <br /> Sample Average flow Days in Down day Percent I Influent concentration,pprnv Removal rate,lbs/da I Net removal,lbs&gallons <br /> date Period rate,cfm 2criod in pertod operational I TPH-G B 'I PH-G 13 FPH-G Q <br /> 12/15/95 Source test -- -- 1200 570 70 05 -- lbs -- lbs <br /> 1/4196 Startup 95 20 196 2% 1455 -- 52 22 lbs lbs <br /> I/26/96 114/96-1126/96 95 22 01 99% 931 -- 33 -- 722 lbs -- lbs <br /> 2126/96 1/26196-2126/96 75 31 22 31% 713 -- 20 -- 189 lbs -- lbs <br /> 3127/96 2/26/96-3/27196 75 30 30 2% 713 -- 20 -- 9 lbs -- lbs <br /> 4/15196 3/27/96-4/15/96 74 19 0 100% 605 17 -- 317 lbs -- lbs <br /> 512196 4/15/96-5/2/96 76 17 11 36% 584 -- 17 -- 103 lbs lbs <br /> 5/15/96 5/2/96-5115/96 60 13 3 81% 582 13 -- 137 lbs lbs <br /> 613/96 5/15196-6/3196 63 19 11 41% 482 -- 11 89 lbs -- lbs <br /> 6121196 5115/96-6/21196 70 37 35 8% 533 -- I4 -- 21 lbs -- lbs <br /> 7110/96 6/21/96-7/10196 65 37 32 28% 639 -- 16 -- 81 lbs -- lbs <br /> 8112196 7110196-8112/96 68 52 50 7% 1000 -- 25 -- 60 lbs -- lbs <br /> 9116196 8/12196-9116/96 80 68 61 21% 702 -- 21 -- 157 lbs -- lbs <br /> 1018/96 9/16/96-10/8/96 60 22 20 9% 486 -- 11 -- 21 lbs -- lbs <br /> 11/5196 1018/96-11/5196 60 28 7 74% 92 -- 2 -- 43 lbs -- lbs <br /> 12/20/96 1115196-12120196 63 45 37 18% 58 __ 1 II lbs lbs <br /> 1/13/97 12/20196-1/13/97 55 24 6 75% 23 <br /> -- I -- 9 lbs -- lbs <br /> System shut off 1/13/97-6/18/97 <br /> 6118/97 6/18197-6130/97 45 12 5 61% 370 -- 6 -- 45 lbs <br /> lbs-- <br /> Totals and averages 3/31197-6/ 0/97 45 91 84 8% 370 -- 6 -- 45 lbs -- lbs <br /> for reporlingperiod 7 gals -- gals <br /> Totals and averages 12/I5/95-6130197 69 652 504 23% 620 57 192037 lbs lbs <br /> cumulative -- <br /> 329 gals -- gals <br /> ='=Not available or not analyzed <br /> Sample Calculations <br /> Mass extraction rate calculation <br /> lbs/day=("x"ppm)* (I E-6)*(molecular weight Ib/lb-mol)*("y"cubic feet/min)* (24 hr/day)*(60 min/hr)*(Ib-mol/380 cubic feet) <br /> where"x"is influent concentration in ppm and"y"is the flow rate in cubic feet/min <br /> For pounds cumulative removal,the removal lb/day result is multiplied by the number of days between sampling events <br /> Gallons removal calculation(for TPH) <br /> gallons removed=lbs*gallon/6 2 lbs <br /> (E 1ARC0SMIwork0upyi81981VeS2093 xiw) <br />