Subpart D - Industrial Sand Subcategory Source:42 FR 35851, July 12, 1977, unless otherwise noted.
Secs. 301, 304 (b) and (c), Federal Water Pollution Control Act, as amended (33 U.S.C. 1251, 1311, 1314 (b) and (c), 86 Stat. 816 et seq., Pub. L. 92-500) (the Act).