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I <br /> TABLE 3 VAPOR EXTRACTION SYSTEM PERFORMANCE DATA, <br /> FORMER EXXON RS 7-0137, 1605 SOUTH EL DORADO STREET, STOCKTON,CALIFORNIA <br /> Influent Concentration (µg/L) Estimated <br /> Days Percent Flowrate TPH-g TPH-g Benzene Removed <br /> Date Operational Operational (cfm) Influent Effluent Effluent in Period* <br /> 11/13/95 NA NA 38 20,055 218 2 - <br /> 11/13/95 NA NA 38 21,110 289 3 000 <br /> 11/20/95 NA NA 38 5,278 95 1 315 59 <br /> 12/04/95 NA NA 38 3,518 60 0 21039 <br /> 01/03/96 NA NA 38 2,392 42 0 30296 <br /> 02/05/96 NA NA 38 1,500 13 ND 21946 <br /> 03/04/96 NA NA 38 900 10 ND 11481 <br /> 05/03/96 <br /> 02/21/97 0 - NM 380 <5 <0 05 000 <br /> 02/27/97 6 100% 7 52 <5 <0 05 0 82 <br /> 04/04/97 35 97% 53 1,200 24 01 5911 <br /> 05/06/97 17 53% 85 130 <10 <01 7014 <br /> 06/04/97 29 100/0 83 210 <10 <0 1 3724 <br /> 07/02/97 28 100% 80 3 440 <10 <0 1 6691 <br /> 08/11/97 40 100% 83 69 <10 <0 1 7474 <br /> 09/11/97 31 100% 83 200 10 <01 3112 <br /> 10/17/97 15 42% 97 51 <5 <0 05 1523 <br /> 12/04/97 31 65% 79 DS <10 <0 1 1251 <br /> 01/29/98 14 25% 83 280 <10 <0 1 16 88 <br /> 03/30/98 3 5% 83 <10 <10 <01 313 <br /> Total or Average 249 62% 1,551 <br /> *Est founds TPH g Removed in Period=Avg Influent conc (uglL)*avg flowrate(CFM)* 1440 min/day* I g/1,000,000 ug*0 002205 lbs/g*28 32 LHO <br /> TPH-g—Total Petroleum Hydrocarbons as gasoline <br /> RS=Tedlar bag was received deflated by laboratory,concentration assumed equal to 10/17/97 result for calculation <br /> NA=No available infolmation <br /> fYproiects170137VnasierNwpVclosure11o0Lsoilvapor2 xis PagL 1 oft <br /> I <br />