§ 17.20.110. Noise.

A.

Noise levels shall comply with WAC 173-60. The operator shall ensure that noise levels are monitored by a technician with the qualifications contained in WAC 173-58, or acceptable qualifications as determined by the health officer, using instruments that meet the qualifications of WAC 173-58, at the property boundaries, at least quarterly after the initiation of the mining or other permitted activity, during normal operating conditions and periods, and until or unless the health department determines that such monitoring is not necessary. Noise monitoring reports shall be provided to the health department and the resource stewardship department. Mineral extraction and asphalt plant activity within the residential zoning districts of the county shall be considered a Class "A" EDNA pursuant to WAC 173-60-030 (2), the state noise standards. If the noise levels exceed the levels permitted by WAC 173-60, the health department or the resource stewardship department may take any enforcement measures necessary to ensure compliance with WAC 173-60.

B.

The approval authority may require additional measures to control noise, such as placing rubber or urethane screens and liners or crushing and screening equipment, equipping loaders and dozers with ambient-sensitive back-up alarms, or muffling engine noise, if site conditions or the site's proximity to residential zoned properties or residential uses warrants them.

(Ord. 10368 § 3 (part), 1993)

(Ord. No. 14782, § 4(Att. C), 8-14-2012)