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TABLE 1 <br /> SOIL VENT SYSTEM HYDROCARBON RECOVERY ISEPTEMBER 1992 ,SEPTEMBER 1993) <br /> 10RNKEY VAC 25 (250 CFM! THERMTECH THERMALICATALYTIC OXIDIZER SYSTEM <br /> 0 W CHARTER WAY, STOCKTON, CA <br /> DATE TPN CONC TPH CONC. TPH EXTR TPH EXTR. BENZENE BENZENE <br /> (FID) (LAB) (FID) (LAB) CONC EXTR <br /> (PPMV) (PPMV) (LBS/DAY) (LBS/DAY( (PPMV) (LBS/DAY) <br /> 9117192 21,400 91900 8409 i 4068 1100 4095 <br /> 10/1192 5,563 14,000 4359 390 390 11 <br /> 1115/92 3,350 80 <br /> 12/10/92 1,725 44 <br /> 1/7193 1,867 1,052 76 41 7 18 065 <br /> 2/9193 1,507 29 1 <br /> 3/5/93 873 152 <br /> 4/9/93 1,617 1,200 80 596 7 5 034 <br /> 5111193 1,289 85 <br /> 6/16/93 260 15 26 013 <br /> 716/93 140 g <br /> 7/13/93 310 18 ND(<0 016) < <br /> 813/93 147 220 9 124 ND(<0 016) < <br /> 9/1193 300 200 18 11 5 ND(<O 016) < <br /> (Start pulsing) <br /> NOTES <br /> SOIL VENT SYSTEM OPERATION STARTED ON 9/17/1992 <br /> SYSTEM "PULSING" {INTERMITTENT ONIOFF OPERATION CYCLES}COMMENCED ON 9/111993 <br /> TPH = total petroleum hydrocarbons <br /> FID = flame ionization detector (Model Century OVA 128 - Foxboro Company) <br /> CFM = cubic feet per minute airflow <br /> Field FID measurements for TPM reported as hexane (molecular wt - 86 2 Ib/ib mole) <br /> PPMV = parts per million by volume <br /> LAB = laboratory <br /> LBS = pounds <br />�= not detected at indicated laboratory detection or reporting limit <br /> CLOVES XLS <br />