Approval and Promulgation of Air Quality Implementation Plans; State of South Dakota; Revisions to the Administrative Rules of South Dakota and New Source Performance Standards Delegation

EPA is taking direct final action approving State Implementation Plan (SIP) revisions submitted by the State of South Dakota on September 12, 2003. The September 12, 2003 submittal revises the Administrative Rules of South Dakota, Air Pollution Control Program, by modifying the chapters pertaining to definitions, operating permits for minor sources, new source review and performance testing. In addition, the State made revisions to the Prevention of Significant Deterioration program, which has been delegated to the State. The intended effect of this action is to make these revisions federally enforceable. We are also announcing that on October 31, 2003, we updated the delegation of authority for the implementation and enforcement of the New Source Performance Standards to the State of South Dakota. These actions are being taken under sections 110 and 111 of the Clean Air Act.