EPA is taking direct final action approving revisions to the Montana State Implementation Plan (SIP) submitted by the Governor of Montana on August 26, 1999. The revisions adopt Administrative Rules of Montana (ARM), Sub-Chapter 14, "Conformity of General Federal Actions," Sections 17.8.1401 and 17.8.1402, into the SIP. The rules require conformity of general Federal actions to assure that actions of federal agencies that take place in nonattainment or maintenance areas, other than transportation actions, are consistent with the goals of the Montana SIP. EPA is taking this action under section 110 and 176 of the Clean Air Act (Act).