39 C.F.R. § 3021.2

(a) The rules in this part apply when:

(1) The Postal Service decides to close or consolidate a post office, and

(2) A patron of that post office appeals the closing or consolidation.

(b) Subparts A through D to part 3010 of this chapter apply to appeals of post office closings or consolidations.

(c) Answers to motions filed by the Postal Service are due within 10 days.