Code of Federal Regulations > Title 40 > Chapter I > Part 415 > Subpart AW - Subpart AW—Oxygen and Nitrogen Production Subcategory

Regulations last checked for updates: Jul 29, 2025

Title 40 - Protection of Environment last revised: Nov 29, 2025

§ 415.490 - Applicability; description of the oxygen and nitrogen production subcategory.

§ 415.491 - Specialized definitions. [Reserved]

§ 415.492 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

authority: Secs. 301, 304 (b), (c), (e), and (g), 306 (b) and (c), 307 (b) and (c), and 501 of the Clean Water Act (the Federal Water Pollution Control Act Amendments of 1972, as amended by the Clean Water Act of 1977) (the “Act”); 33 U.S.C. 1311,1314,c,e,and, 1316 (b) andc, 1317 (b) andc,and; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217

source: 47 FR 28278, June 29, 1982, unless otherwise noted.