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42 U.S.C. 7401 et seq.
43 FR 51393, Nov. 3, 1978, unless otherwise noted.
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After notice and opportunity for public hearing in each affected State, the Administrator may revise any provision of an applicable plan if:
(a) The provision was promulgated by the Administrator and
(b) The plan, as revised, will be consistent with the Act and with the requirements of part 60, subpart B of this chapter.