[Code of Federal Regulations] [Title 25, Volume 1] [Revised as of April 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 25CFR900.21] [Page 996] TITLE 25--INDIANS CHAPTER V--BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR, AND INDIAN HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES PART 900_CONTRACTS UNDER THE INDIAN SELF-DETERMINATION AND EDUCATION ASSISTANCE ACT--Table of Contents Subpart E_Declination Procedures Sec. 900.21 When can a proposal be declined? As explained in Sec. Sec. 900.16 and 900.17, a proposal can only be declined within 90 days after the Secretary receives the proposal, unless that period is extended with the voluntary and express written consent of the Indian tribe or tribal organization.