(a) Purpose and scope. This section sets forth the applicable State Implementation Plan for South Dakota under section 110 ofthe Clean Air Act, 42 U.S.C. 7410 and 40 CFR part 51 to meet national ambient air quality standards or other requirements under the Clean Air Act.(b) Incorporation by reference.(1) Material listed in paragraphs (c) and (d) of this section with an EPA approval date prior to November 15, 2004 was approved for incorporation by reference by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51.
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