Clean Air Act Approval and Promulgation of Carbon Monoxide Implementation Plan for the State of Washington: Puget Sound Attainment Demonstration

EPA is approving the attainment demonstration portion of the Puget Sound carbon monoxide (CO) State implementation plan (SIP) revision submitted on September 30, 1994, by the State of Washington Department of Ecology (Washington) for the purpose of documenting attainment of the national ambient air quality standards (NAAQS) for CO. The implementation plan revision was submitted by the State to satisfy certain federal requirements for an approvable nonattainment area CO SIP for the Puget Sound nonattainment area in the State of Washington. The rationale for the approval is set forth in this notice. Additional information is available at the address indicated below. Under the Clean Air Act (CAA), EPA must approve or disapprove SIPs or portions of SIPs within time frames specified in the CAA; failure to do so would render EPA liable to citizen suits to conduct rulemaking on those SIPs and would delay making approvable rules federally enforceable.