Odor standards
Seattle Mun. Code § 23.47A.020
in effectA. The venting of odors, vapors, smoke, cinders, dust, gas, and fumes shall be at least 10 feet above finished sidewalk grade, and directed away to the extent possible from uses within 50 feet of the vent. B. Major odor sources 1. Uses that employ the following odor-emitting processes or activities are major odor sources: a. Lithographic, rotogravure, or flexographic printing; b. Film burning; c. Fiberglassing; d. Selling of gasoline and/or storage of gasoline in tanks larger than 260 gallons; e. Handling of heated tars and asphalts; f. Incinerating (commercial); g. Tire buffing; h. Metal plating; i. Vapor degreasing; j. Wire reclamation; k. Use of boilers (greater than 106 British thermal units per hour, 10,000 pounds steam per hour, or 30 boiler horsepower); l. Animal food processing; m. The production or processing of cannabis products by a major cannabis activity; and n. Other similar processes or activities. 2. Uses that employ the following processes are considered major odor sources, except when the entire activity is conducted as part of a commercial use other than food processing or heavy commercial services: a. Cooking of grains; b. Smoking of food or food products; c. Fish or fishmeal processing; d. Coffee or nut roasting; e. Deep fat frying; f. Dry cleaning. C. When an application is made for a use that is a major odor source, the Director, in consultation with the Puget Sound Clean Air Agency (PSCAA), will determine the appropriate measures to be taken by the applicant in order to significantly reduce potential odor emissions and airborne pollutants. The measures to be taken must be indicated on plans submitted to the Director and may be required as conditions for the issuance of any permit. After a permit has been issued, any measures that were required by the permit must be maintained. (Ord. 127099 , § 25, 2024 [changed "marijuana" to "cannabis"]; Ord. 124969 , § 6, 2016; Ord. 123046, § 33, 2009; Ord. 122311 , § 44, 2006.)
Source: Seattle Municipal Code (Municode library)URL: https://library.municode.com/wa/seattle/codes/municipal_codeFetched: 7/25/2026