Approval and Promulgation of Implementation Plans; Washington: Update to the Spokane Regional Clean Air Agency Solid Fuel Burning Device Standards

The Environmental Protection Agency (EPA) is proposing to approve a State Implementation Plan (SIP) revision submitted by the Washington State Department of Ecology (Ecology) on July 10, 2015. The SIP submission contains revisions to the Spokane Regional Clean Air Agency (SRCAA) solid fuel burning device regulations to control particulate matter from residential wood combustion. The updated regulations reflect the State of Washington's statutory changes setting fine particulate matter trigger levels for impaired air quality burn bans. The submission also contains updates to the regulations to improve the clarity of the language. We are proposing to approve these changes because they meet the requirements of the Clean Air Act and strengthen the Washington SIP.