Approval and Promulgation of Air Quality Implementation Plans; Montana; Revisions to the Administrative Rules of Montana

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EPA is taking direct final action approving State Implementation Plan (SIP) revisions submitted by the State of Montana on January 16, 2009 and May 4, 2009. The revisions are to the Administrative Rules of Montana. Revisions include minor editorial and grammatical changes, updates to the citations and references to federal laws and regulations, and a clarification of agricultural activities exempt from control of emissions of airborne particulate matter. This action is being taken under section 110 of the Clean Air Act.