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estimate of the total flow of the exhaust gas stream is approximately 5,000 <br /> cfm. The anticipated exhaust temperature is approximately 10 to 20OF above <br /> ambient temperatures. <br /> The estimated air emissions were derived from estimated stream flow rates <br /> and assumed particulate loadings. The particulates will consist almost <br /> entirely of dry sodium bicarbonate product. <br /> D. Pregnant Tank Vent <br /> The hot pregnant liquor coming from the production wells in to the plant may <br /> contain small amounts of methane. This methane is vented prior to <br /> crystallization of the sodium bicarbonate. <br /> The pregnant tank will be a horizontal, cylindrical, pressurized vessel <br /> equipped with an inlet at one end, an outlet at the other end, and a pressure <br /> regulated vent outlet in the dome of the vessel. Hot pregnant liquor from the <br /> wells will flow through the separator to allow the entrained methane and CO2 <br /> to rise to the liquid surface, and migrate into the vessel dome from which it <br /> will exit through a vent. This gas mixture will be non-combustible. <br /> The methane vent air emissions are not known at this time because of a lack <br /> of documented experience. It is anticipated that the vent rate will be up to 10 <br /> cfm. <br /> E. Cooling Tower Evaporation <br /> Water will be used for cooling various streams in the process. The water will <br /> be cooled by recirculating through a cooling tower. A relatively large amount <br /> of water will be evaporated in the cooling tower to produce the required <br /> cooling effect. <br /> Approximately 12,000 Ibs per hour of water vapor from evaporation plus a <br /> very small amount of drift as liquid droplets from the water circulating in the <br /> tower will be emitted to the atmosphere. <br /> G:\LMW 78545.002\Reclamation\Reclamexh.DOC D-50 <br />