Finding of Attainment and Approval of Attainment Plan for Klamath Falls, Oregon Fine Particulate Matter Nonattainment Area

The Environmental Protection Agency (EPA) is finalizing the finding of attainment and approving the attainment plan submitted on December 12, 2012 by the Oregon Department of Environmental Quality (ODEQ) for the 2006 24-hour fine particulate matter (PM2.5) National Ambient Air Quality Standards (NAAQS) for the Klamath Falls, Oregon nonattainment area. Based upon 2012-2014 quality-assured, quality-controlled, and certified ambient air monitoring data available in the EPA's Air Quality System (AQS), the area has monitored attainment of the 2006 24-hour PM2.5 NAAQS. The EPA determined that the attainment plan addressed the nonattainment planning requirements of the Clean Air Act (CAA) and provided for attainment of the PM2.5 NAAQS. The attainment plan's strategy for controlling direct and precursor PM2.5 emissions relied primarily on an episodic woodstove curtailment program and a program to change-out uncertified woodstoves.