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42 U.S.C. 7401 et seq.
57 FR 61992, Dec. 29, 1992, unless otherwise noted.
66 FR 3193, Jan. 12, 2001, unless otherwise noted.
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(a) In delegating implementation and enforcement authority to a State under section 112(d) of the Clean Air Act, the authorities contained in paragraph (b) of this section must be retained by the Administrator and not transferred to a State.
(b) The authorities which will not be delegated to States are listed in paragraphs (b)(1) through (4) of this section:
(2) Approval of a major change to test method under § 63.7(e)(2)(ii) and (f) and as defined in § 63.90.
(4) Approval of a major change to recordkeeping/reporting under § 63.10(f) and as defined in § 63.90.
[66 FR 3193, Jan. 12, 2001, as amended at 82 FR 47353, Oct. 11, 2017]