43 CFR § 3131.4 Oil and Gas Leasing: National Petroleum Reserve, Alaska§ 3131.4 Lease sales.Current through Aug 12, 2026 · Read all of Part 3130⚠ 2 pending changes to Part 3130Oil and Gas LeasingProposed Rule · Interior DepartmentNational Petroleum Reserve in Alaska Production Site DevelopmentProposed Rule · comments close Nov 9, 2026 · Interior Department