Industrial and commercial noise reaching homes in Spokane County is governed by WAC 173-60. An industrial (Class C) source may emit up to 60 dBA at a residence, 65 dBA at commercial property, and 70 dBA at another industrial property, with a 10 dBA night reduction for residential receivers.
WAC 173-60-040 sets limits by source and receiver EDNA class. Class C (industrial) sources are capped at 60 dBA at a Class A residence, 65 dBA at Class B commercial property, and 70 dBA at Class C industrial property. Between 10 p.m. and 7 a.m., limits at residential receivers drop 10 dBA (industrial-to-residential falls to 50 dBA). WAC 173-60-030 classifies storage, manufacturing and agricultural operations as Class C. The Department of Ecology and the county enforce these environmental-noise standards.
Industrial noise over WAC 173-60 limits is a nuisance enforceable by the county and Ecology; persistent violations can bring abatement orders and penalties. Complaints via county code enforcement and Ecology.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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See how Spokane County's industrial noise rules stack up against other locations.
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