Approval and Promulgation of Air Quality Implementation Plans; Montana; Revisions to the Administrative Rules of Montana-Air Quality, Subchapter 7, Exclusion for De Minimis Changes; Final Rule

Résumé

The Environmental Protection Agency (EPA) is taking final action to correct final rules pertaining to the State of Montana's State Implementation Plan (SIP). On February 13, 2012, EPA took final action to partially approve and partially disapprove SIP revisions and new rules as submitted by the State of Montana on June 25, 2010 and May 28, 2003. EPA subsequently discovered errors in our February 13, 2012 final action related to the materials incorporated by reference and the associated regulatory text that inadvertently reversed portions of our July 8, 2011 final action. EPA is taking final action, under section 110 of the Clean Air Act (CAA).