US lawFederal (United States)RegulationsTitle 43 CFR — Public Lands: InteriorChapter II — BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIORPart 3130 — OIL AND GAS LEASING: NATIONAL PETROLEUM RESERVE, ALASKASubpart 3137 — Unitization Agreements—National Petroleum Reserve-Alaska3137.2643 C.F.R. § 3137.26When is a unit agreement effective?Last amended: 2016Year: 2026Length: 11 wordsOfficial source Cite as 43 C.F.R. § 3137.26 (2026)The unit agreement is effective on the date BLM approves it.Previous43 C.F.R. § 3137.25Next43 C.F.R. § 3137.27