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40 CFR §62.14615

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
You must renew a lapsed operator qualification by one of the two methods specified in paragraphs (a) and (b) of this section.
  1. (a)For a lapse of less than 3 years, you must complete a standard annual refresher course described in § 62.14610.
  2. (b)For a lapse of 3 years or more, you must repeat the initial qualification requirements in § 62.14605(a).