Approval and Promulgation of Air Quality Implementation Plans; Colorado; Revisions to Common Provisions and Regulation Number 3; Correction

The Environmental Protection Agency (EPA) is approving State Implementation Plan (SIP) revisions submitted by the State of Colorado on March 31, 2010, May 16, 2012 and May 13, 2013. The revisions are to Colorado Air Quality Control Commission (Commission) Regulation Number 3, Parts A, B and D and Common Provisions Regulation. The revisions include administrative changes to permitting requirements for stationary sources, updates to the fine particulate matter less than 2.5 microns in diameter (PM<INF>2.5</INF>) implementation rule related to the federal New Source Review (NSR) Program, changes to address previous revisions to Air Pollutant Emission Notice (APEN) regulations that EPA disapproved or provided comments on, revisions to definitions, and minor editorial changes. Also in this action, EPA is correcting a final rule pertaining to Colorado's SIP published on April 24, 2014. In our April 24, 2014 action, regulatory text and corresponding "incorporation by reference" (IBR) materials were inadvertently excluded for greenhouse gas permitting revisions to the Common Provisions Regulation and minor editorial changes to the Common Provisions Regulation and Parts A, B and D of Regulation Number 3 (adopted October 10, 2010). This action is being taken under section 110 of the Clean Air Act (CAA).