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33 U.S.C. 1251 et seq.
88 FR 66661, Sept. 27, 2023, unless otherwise noted.
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(a) Provided that the Federal agency and the certifying authority agree in writing that the certifying authority may modify a grant of certification (with or without conditions), the certifying authority may modify only the agreed-upon portions of the certification. The certifying authority is not required to obtain the Federal agency's agreement on the language of the modification.
(b) The certifying authority shall not, through a modification pursuant to paragraph (a) of this section:
(1) Revoke a grant of certification (with or without conditions); or
(2) Change a grant of certification (with or without conditions) into a denial or waiver of certification.