This document covers Washington State noise regulation exemptions under WAC 173-60-050, listing activities exempt from standard noise limits—such as construction, aircraft flight operations, emergency equipment, hunting, and railroad traffic—along with time-based conditions (e.g., 7 a.m. to 10 p.m.) that apply to some exemptions. It also includes a Growth Management Act county map showing which Washington counties are mandated to plan, opting to plan, or planning only for critical areas and resource lands. Together, these materials provide regulatory context for noise policy and land-use planning relevant to airport-adjacent communities like those near Sea-Tac.Open full document
Notes
This document presents Appendix C of WAC 173-60-050, which outlines exemptions from Washington State noise regulations under WAC 173-60-040. The exemptions cover a wide range of sound sources including residential maintenance, construction, aircraft, motor vehicles, railroads, and natural phenomena, organized by time-of-day applicability and EDNA class. The document also notes that exemptions do not preclude the department from requiring best available noise abatement technology.