Regulations last checked for updates: Feb 07, 2026

Title 30 - Mineral Resources last revised: Jan 27, 2026
All TitlesTitle 30Chapter IPart 77Subpart C - Subpart C—Surface Installations
View all text of Subpart C [§ 77.200 - § 77.217]
§ 77.201 - Methane content in surface installations.

The methane content in the air of any structure, enclosure or other facility shall be less than 1.0 volume per centum.

authority: 30 U.S.C. 811.
source: 36 FR 9364, May 22, 1971, unless otherwise noted.
cite as: 30 CFR 77.201
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