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42 U.S.C. 7401 et seq.
36 FR 24877, Dec. 23, 1971, unless otherwise noted.
84 FR 15884, Apr. 16, 2019, unless otherwise noted.
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You must renew a lapsed operator qualification by one of the two methods specified in paragraphs (a) and (b) of this section:
(a) For a lapse of less than 3 years, you must complete a standard annual refresher course described in § 60.2650; and
(b) For a lapse of 3 years or more, you must repeat the initial qualification requirements in § 60.2645(a).