(a) The Regional Administrator shall process an application of an Indian Tribe submitted pursuant to § 233.61 in a timely manner. The Regional Administrator shall promptly notify the Indian Tribe of receipt of the application.

(b) The Regional Administrator shall follow the procedures described in § 233.15 in processing a Tribe's request to assume the 404 dredge and fill permit program.

(c) The Regional Administrator shall follow the procedures for substantial program revisions described in § 233.16 in processing a Tribe's request to add additional geographic area(s) to its assumed 404 dredged or fill material permit program that would add reservation areas to the scope of its approved program. A Tribe making such a request shall provide an application meeting the requirements of § 233.61 that describes how the Tribe meets the eligibility criteria in § 233.60 for the new area.