Summary of Seattle Particulate Matter (PM-10) Attainment and Maintenance Plans
The Seattle, Washington area was designated nonattainment for PM10 and classified as moderate upon enactment of the Clean Air Act Amendments of 1990.
Washington submitted a PM10 maintenance plan on August 23, 1999. EPA approved the plan on March 13, 2001 (66 FR 14492 (PDF)(9 pp, 159 K, About PDF)).
On November 29, 2013, Washington submitted a 2nd 10-year maintenance plan ensuring continued maintenance until May 2021, which the EPA approved on August 20, 2014 (79 FR 49239 (PDF)(6 pp, 286 K)).
The plan relies on control strategies needed to assure attainment of the PM10 National Ambient Air Quality Standards (NAAQS). The strategy focuses on control of residential woodsmoke, fugitive dust, industrial source controls, open burning, and programs applicable to diesel exhaust.
- WAC 173-433, Residential Wood Combustion Control Program
- PSCAA Regulation I, Article 13, Residential Wood Combustion Control Program
- PSCAA Regulation I, Section 9.15, Fugitive Dust Emission Standard
- WAC 173-425, Outdoor Burn Ban
- PSCAA Regulation I, Article 8, Outdoor Fires
- RCW 70.94.521-551 (dated November 13, 1992), Transportation Demand Management Program
- WAC 173-422, Motor Vehicle Emission Inspection
- Emission Limits for Significant Stack Sources
- Resolution No. 639 (passed & approved January 12, 1989)
- PSCAA Regulation I, Section 13.07
EPA Effective Date
May 14, 2001