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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 1: TPHe Emission Rate at Startup After Abatement by the Thermal Oxidizer <br /> According to the manufacturer data summarized in Appendix C, the thermal oxidizer is <br /> designed to maintain, at a minimum, a temperature of 1800 T. This will result in a <br /> treatment efficiency of > 95%, but no less than 95% at worst case. Assuming worst case: <br /> TPHg Emission Concentration after Abatement = (1 - 0.95) x 1,185 ppmv <br /> = 59.3 ppmv <br /> ' And, <br /> TPHg Mass Emission Rate from Stack = (1 - 0.95) 35.6 Ib TPHg/day <br /> i ' = 1.8 lb TPHg/day <br /> Month 1: Benzene Extraction Rate at Starts - VEW 3 On Line <br /> Vapor samples collected during the vapor extraction test (RESNA, January ry1993 rep <br /> orted <br /> an average benzene concentration for all nine well samples of 271 mg/&. Benzene <br /> generally comprised about 5%of the TPHg vapor (weight to volume). The maximum initial <br /> benzene concentration at startup in ppmv (volume to volume) is: <br /> = 271 mg benzene x I g x 1 mole benzene x 22 414 I vapor x 1 m' x 1 cm3 x i.000 ml <br /> M) 1,000 mg 78 g benzene mole benzene 106 cm3 i ml 1 1 <br /> = 77 9 jpgM benzene = 77.9 ppmv <br /> 106 parts vapor <br /> And, the Benzene Extraction Rate at Startup is: <br /> 77 9 ppmv benzene x 35.6 lb TPHg/day = 2.3 lb benzene/day <br /> ' 1,185 ppmv TPHg <br /> Month 1: Benzene Emission Rate at Startup after Abatement by Thermal Oxidizer <br /> ' Using the worst case 95% destruction efficiency achieved by the thermal oxidizer, the <br /> approximate initial benzene mass emission rate after abatement is: <br />-, Benzene Mass Emission Rate from Stack = 1 - 0.95 23 lb benzene da <br /> t ) benzene/day <br /> = 0.121b benzene/day <br /> B-2 <br />