Division III. General Conditions Applicable to All Zones
Chapter 18.185
NOISE LEVELS
Sections
18.185.050 Limit on noise impacts on residential neighborhoods.
18.185.060 Requirement for noise mitigation plan.
18.185.010 Title.
This section shall be entitled “General Conditions Applicable to All Zones.” This chapter shall be entitled “Noise Levels.” [Ord. 1591 § 375, 2014.]
18.185.020 Application.
This chapter shall be applicable to all zones. [Ord. 1591 § 376, 2014.]
18.185.030 Purpose.
The purpose of this chapter is to regulate and limit the adverse impact of specific noise exposure levels and require, when appropriate, noise mitigation plans. [Ord. 1591 § 377, 2014.]
18.185.040 Authority.
This chapter is adopted pursuant to the provisions of chapters 35.63, 35A.63 and 36.70A RCW and other applicable laws. [Ord. 1591 § 378, 2014.]
18.185.050 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. 1591 § 379, 2014.]
18.185.060 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 Planning, Building and Public Works Department of the City for review and approval before required permits are issued to allow the project to proceed. [Ord. 1591 § 380, 2014.]