Partial Approval and Partial Disapproval and Promulgation of Air Quality Implementation Plans; South Dakota; Revisions to South Dakota Administrative Code; Permit: New and Modified Sources

The Environmental Protection Agency (EPA) is taking final action to partially approve and partially disapprove State Implementation Plan (SIP) revisions submitted by the State of South Dakota on June 14, 2010, June 20, 2011, and July 29, 2013. All three SIP submittals revise the portion of the Administrative Rules of South Dakota (ARSD) that pertain to the issuance of South Dakota air quality permits. In addition, the June 14, 2010 submittal revises certain definitions and dates of incorporation by reference. The June 14, 2010 submittal contains new, amended and renumbered rules; the June 20, 2011 submittal contains new rules; and the July 29, 2013 submittal contains amended rules. In this rulemaking, we are taking final action on all portions of the June 14, 2010 submittal, except for those portions of the submittal which do not belong in the SIP. We are also taking final action on portions of the June 20, 2011 submittal that were not acted on in our April 18, 2014 rulemaking regarding greenhouse gases and the State's Prevention of Significant Deterioration (PSD) program. We are taking final action on portions of the July 29, 2013 submittal that supersede portions of the two previous submittals; the remainder of the July 29, 2013 submittal will be acted on at a later date. This action is being taken under section 110 of the Clean Air Act (CAA).