25 CFR § 226.35 - Formations to be protected.

---
identifier: "/us/cfr/t25/s226.35"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "25 CFR § 226.35 - Formations to be protected."
title_number: 25
title_name: "Indians"
section_number: "226.35"
section_name: "Formations to be protected."
chapter_name: "BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR"
subchapter_number: "I"
subchapter_name: "ENERGY AND MINERALS"
part_number: "226"
part_name: "LEASING OF OSAGE RESERVATION LANDS FOR OIL AND GAS MINING"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
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."
regulatory_source: "81 FR 39573, June 17, 2016, unless otherwise noted."
cfr_part: "226"
---


# 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.