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Working To Restore Nature <br /> Addendum One to Remedial Action Plan March 1, 1993 <br /> Coca-Cola Former Distribution Facility, Stockton, California 54006.01 <br />' MONTH 2 EXTRACTION RATES, AND EMISSION RATES AFTER ABATEMENT BY <br /> THERMAL OXIDIZER <br />' Month 2: TPHe Extraction Rate - VEW-Z VEW 3 and VEW 7 On Line <br /> Assuming an average reduction in Month 2 of one-third (33.3%) of the TPHg vapor <br /> concentration, the Month 2 vapor concentration is estimated at 0.666 x 1,185 ppmv = 789 <br /> ppmv Then, at a total flow rate of 225 cfm with three wells on line, <br /> The TPHg Average Extraction Rate during Month Two, prior to abatement is. <br /> = 789 1 TPHe x 225 Ft' x 1,440 min x 2832 lair x 1 mole TPH� x 100 e x 11 <br /> 1,000,000 1 air nun day 1 ft3 22.414 1 vapor mole TPHg 454 g <br /> = 71 lb TPH¢ <br /> day <br /> = 2,130 lb TPHg/month <br /> Month 2: TPHg Emission Rate After Abatement by ThermalO d exi iz r <br /> With three wells on line during Month 2, assuming a worst case treatment efficiency for the <br /> thermal oxidizer of 95%- <br /> TPHg Emission Concentration after Abatement = (1 - 0.95) x 789 ppmv <br /> = 39.5 ppmv <br /> And, <br /> TPHgMass Emission Rate from — - <br /> Stack — (1 0.95) 71 lb TPHg/day <br /> = 3.6 lb TPHg/day <br /> Month 2: Benzene Extraction Rate - VEW 2 VEW 3 and VEW 7 On Line <br /> Similarly to the Month 2 TPHg concentration drop, assume approximately a 1/3 decrease <br /> in the benzene concentration, so that benzene concentration = 0.66 x 271 mg/m3 = 178 9 <br /> ppmv. Then the average benzene concentration during Month 2 is: <br /> 178 9 mg benzene x _ 1 g x 1 mole benzene x 22.4141 vapor x 1 W x 1 cm3 x 1,000 ml <br /> M3 1,000 mg 78 g benzene mole benzene 1W cm3 1 ml 11 <br />' B-3 <br /> 1 <br />