10 C.F.R. § 1040.123
In cases in which the same or related facts are asserted to constitute noncompliance with this part with respect to two or more programs to which this part applies or noncompliance with this part and the regulations of one or more other Federal departments or agencies issued to implement the requirements of the laws cited in this part, the Secretary or a designee, in coordination with FERC may, by agreement with other departments or agencies, where applicable, provide for the conduct of consolidated or joint hearings and for the application to such hearings of rules of procedure not inconsistent with this part. Final decision in such cases, insofar as programs subject to this part are concerned, shall be made in accordance with procedures established by the FERC.
10 C.F.R. § 1040.123