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TABLE 2 <br /> VAPOR EXTRACTION SYSTEM PERFORMANCE DATA <br /> Former Beacon Station No 12419 <br /> 2350 Waterloo Road,Stockton,California <br /> TPH as Gasoline Benzene <br /> INF EFF AIR INF INF TOTAL EFF MAXIMUM MINIMUM fNF INF TOTAL EFF MAXIMUM MINIMUM <br /> HOUR OPERATING FLOW FLOW SPARGE CONC' RATE REMOVED CONC` EFF RATE ABATEMENT CONC' RATE REMOVED CONC' EFF RATE ABATEMENT <br /> DATE METER DAYS (scfm) (scfm) (offlon) (ppmv) (ppd) (lbs) (ppmv) (ppd) EFFICIENCY (ppmv) (ppd) (Ibs) (ppmv) (ppd) EFFICIENCY <br /> 812105 45 0 31 1 1413 off 9800 10815 00 180 90 982% 10 0 091 000 040 0 02 960% <br /> 8111105 143 04 209 829 off 2300 1702 69 98 29 957% 12 0 007 000 0 085 000 929% <br /> 8/30105 294 06 330 1187 off ns 2687 239 ns 41 nm ns 0 012 001 ns 000 nm <br /> 9113105 3667 141 281 1665 off 3300 3286 4857 53 31 984% 34 0 028 040 0 089 000 974% <br /> 9126105 680 7 131 204 1054 off ns 2382 7974 ns 20 nm ns 0 020 0 66 ns 000 nm <br /> Total days 282 <br /> NOTES TPH=total petroleum hydrocarbons scfm=standard cubic feet per minute lbs=pounds <br /> INF=influent ppmv=parts per million by volume nm=not measured <br /> EFF=effluent ppd=pounds per day ns=not sampled <br /> CONC=concentration <br /> '=field measurement or analytical concentration(BOLD) <br /> VESdataTbl2 <br /> Project No 1419 31 Page 1 of 1 HORIZON ENVIRONMENTAL INC <br />