Chapter 18.38
NOISE LEVELS1
Sections
18.38.010 Definitions.
18.38.020 Limit on noise impacts on residential neighborhoods.
18.38.030 Requirement for noise mitigation plan.
18.38.010 Definitions.
(1) Use of Words and Phrases. As used in this chapter, unless the context or subject matter clearly requires otherwise, the words or phrases defined in this section shall have the indicated meanings.
(2) “Residential neighborhood” means all land within the city designated “residential” or “R-SE” in the official zoning map of the city, including single-family residential, RA, multifamily residential, and R-SE. [Ord. 1237 §§ 2, 4, 1999; Ord. 1197 § 28, 1997; Ord. 1127 § 1, 1995.]
18.38.020 Limit on noise impacts on residential neighborhoods.
Residential neighborhoods shall not be subject to adverse land uses, activities or traffic that generate exterior noise exposure levels exceeding 55 Ldn dBA, or existing levels as of April 20, 1995, whichever is greater. A reduction in the exterior noise level (greater than 55 Ldn) that existed as of April 20, 1995 shall become the new maximum exterior noise level. [Ord. 1127 § 2, 1995.]
18.38.030 Requirement for noise mitigation plan.
Proponents of projects that will increase exterior noise levels to which residential areas are exposed to levels exceeding those existing on April 20, 1995, or to levels exceeding an Ldn of 55 dBA, whichever is greater, must submit a noise mitigation plan to the community development department of the city for review and approval before required permits are issued to allow the project to proceed. [Ord. 1127 § 3, 1995.]
The provisions on trash container screening, originally codified in this chapter, have been recodified as DMMC 18.41.500 – 18.41.550. See also chapters 7.16 and 7.36 DMMC.