Regulations last checked for updates: Feb 12, 2026

Title 40 - Protection of Environment last revised: Dec 22, 2026
§ 427.50 - Applicability; description of the asbestos millboard subcategory.

The provisions of this subpart are applicable to discharges resulting from the process in which asbestos in combination with various other materials such as cement, starch, clay, lime, and mineral wool are used in the manufacture of asbestos millboard.

authority: Secs. 301, 304 (b) and (c), 306 (b) and (c), 307(c), Federal Water Pollution Control Act, as amended; 33 U.S.C. 1251,1311,1314,1316,1317; 86 Stat. 816
source: 39 FR 7527, Feb. 26, 1974, unless otherwise noted.
cite as: 40 CFR 427.50