Regulations last checked for updates: Feb 11, 2026

Title 25 - Indians last revised: Dec 01, 2025
§ 226.35 - Formations to be protected.

Lessee shall, to the satisfaction of the Superintendent, take all proper precautions and measures to prevent damage or pollution of oil, gas, fresh water, or other mineral bearing formations.

authority: Sec. 3, 34 Stat. 543; secs. 1, 2, 45 Stat. 1478; sec. 3, 52 Stat. 1034, 1035; sec. 2(a), 92 Stat. 1660; and Sec. 701, Pub. L. 114-74, 129 Stat. 599
source: 81 FR 39573, June 17, 2016, unless otherwise noted.
cite as: 25 CFR 226.35