Approval and Promulgation of Air Quality Implementation Plans; South Dakota; Revisions to South Dakota Administrative Code

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The Environmental Protection Agency (EPA) is approving State Implementation Plan (SIP) revisions submitted by the State of South Dakota on July 29, 2013. This SIP submission revises the Administrative Rules of South Dakota (ARSD) Article 74:36--Air Pollution Control Program. These revisions include renumbering, revisions to the date of incorporation by reference of the federal regulations referenced throughout ARSD Article 74:36, and removal of obsolete language regarding variance provisions and clean units. EPA is also clarifying a final rule issued on January 29, 2015 pertaining to South Dakota's infrastructure SIP. This action is being taken in accordance with section 110 of the Clean Air Act (CAA).