Single-case exceptions from this part may be authorized in writing by the Director or Deputy Director of SC or the Head of a Contracting Activity upon the written request of DOE staff, an applicant for an award, or a recipient. A request from an applicant or a recipient must be submitted to or through the cognizant contracting officer. Whenever a proposed exception from this part would be a exception from 2 CFR part 200 as amended by 2 CFR part 910, the exception must also be authorized in accordance with the procedures prescribed in that part.