34 C.F.R. § 361.62
(c) Separate State agency for vocational rehabilitation services for individuals who are blind. If there is a separate part of the vocational rehabilitation services portion of the Unified or Combined State Plan administered by a separate State agency to provide vocational rehabilitation services for individuals who are blind—
(d) Waiver or modification.
(1) The Secretary may waive or modify the maintenance of effort requirement in paragraph (a) of this section if the Secretary determines that a waiver or modification is necessary to permit the State to respond to exceptional or uncontrollable circumstances, such as a major natural disaster or a serious economic downturn, that—
(3) A written request for waiver or modification, including supporting justification, must be submitted to the Secretary for consideration as soon as the State has determined that it has failed to satisfy its maintenance of effort requirement due to an exceptional or uncontrollable circumstance, as described in paragraphs (d)(1) and (2) of this section.
(Authority: Sections 101(a)(17) and 111(a)(2) of the Rehabilitation Act of 1973, as amended; 29 U.S.C. 721(a)(17) and 731(a)(2))