36 CFR 219.58: Timing of a plan, plan amendment, or plan revision decision.

(a) The responsible official may not issue a decision document concerning a plan, plan amendment, or plan revision subject to the provisions of this subpart until the reviewing officer has responded in writing to all objections.

(b) A decision by the responsible official approving a plan, plan amendment, or plan revision must be consistent with the reviewing officer's response to objections.

(c) When no objection is filed within the allotted filing period, the reviewing officer must notify the responsible official. The responsible official's approval of the plan, plan amendment, or plan revision in a plan decision document consistent with § 219.14, may occur on, but not before, the fifth business day following the end of the objection-filing period.