EPA is taking direct final action approving State Implementation Plan (SIP) revisions submitted by the State of Montana on June 28, 2000 and April 16, 2007. The revisions update Administrative Rules of Montana (ARM) provisions for Particulate Matter, and address Interstate Transport Pollution requirements of Section 110(a)(2)(D)(i) of the Clean Air Act. On June 28, 2000, the Governor of Montana submitted revisions to ARM rules 17.8.101-Definitions; 17.8.308-Particulate Matter, Airborne; and 17.8.320-Wood Waste Burners. In the April 16, 2007 submission, the Governor of Montana requested EPA's review and approval of the "Interstate Transport Rule Declaration" adopted into the State SIP on February 12, 2007. The June 28, 2000 submittal included also a declaration certifying the adequacy of the State SIP in regard to the infrastructure-related PM<INF>2.5</INF> elements of Section 110. EPA is not taking action on this declaration since the State rescinded the request for approval with the April 16, 2007 submittal. This action is being taken under section 110 of the Clean Air Act.