EXH2064031728

PCHBPollution Control Hearings Board of the State of Washington

Elizabeth Leavitt asked me to send the attached copy of our synthetic minor permit to you. Here's a little background: On September 21, 1999, the Puget Sound Clean Air Agency issued an Order to the Port of Seattle limiting facility-wide air emissions of sulfur dioxide, nitrogen oxides, and carbon monoxide at the Seattle-Tacoma International Airport to less than 99 tons each during any 12 consecutive months. In order to demonstrate compliance with this Order, the Port is required to monitor fuel usage of natural gas and estimate fuel oil usage for stationary air emission sources, and calculate air emissions on a monthly basis using specified emission factors. The Port is required to review these emission factors on an annual basis or more frequentlywhen requested to do so by the Puget Sound Clean Air Agency. The Port is also required to perform an emission inventory survey of stationary air emission sources under common control of the Port every 5 years. (Not_ The term stationary air emission source includes, but is not limited to, all stationary fuel burning equipment and internal combustion engines, spray coating operations (e_cluding painting of building structures), solvent cleaning operations, gasoline refueling operations, woodworking operations, and soil and groundwater remediation systems.) Based on a quick review of our monthly records, we are well below are emission limits. Typically, emissions of nitrogen oxides are between 15 and 17 tons over the previous 12 month period, and emissions of carbon monoxide and sulfur dioxide are each 10 tons or less…
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