WAIS Document Retrieval[Code of Federal Regulations] [Title 43, Volume 2] [Revised as of October 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 43CFR3137.25] [Page 398] TITLE 43--PUBLIC LANDS: INTERIOR CHAPTER II--BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIOR PART 3130_OIL AND GAS LEASING: NATIONAL PETROLEUM RESERVE, ALASKA-- Table of Contents Subpart 3137_Unitization Agreements_National Petroleum Reserve-Alaska Sec. 3137.25 How will the parties to the unit know if BLM approves the unit agreement? BLM will notify the unit operator in writing when it approves or disapproves the proposed unit agreement. The unit operator must notify, in writing, all parties to the unit agreement within 30 calendar days after receiving BLM's notice of approval or disapproval.