76 FR 1579
EPA is proposing to approve a State Implementation Plan (SIP) revision submitted by the State of Idaho on October 25, 2010, as meeting the requirements of Clean Air Act (CAA) section 110(a)(2)(D)(i)(II) as it applies to visibility for the 1997 8-hour ozone and 1997 particulate matter (PM2.5) National Ambient Air Quality Standards (NAAQS). EPA is also proposing to approve a portion of the revision as meeting certain requirements of the regional haze program, including the requirements for best available retrofit technology (BART).