(a) If a plan is disapproved in whole or in part, FTA will specify which provisions are disapproved. Each entity shall amend its plan consistent with this information and resubmit the plan to the appropriate FTA Regional Office within 90 days of receipt of the disapproval letter.

(b) Each entity revising its plan shall continue to comply with the public participation requirements applicable to the initial development of the plan (set out in §37.137 of this part).