Title 40

PART 421 SUBPART J

Secs. 301, 304 (b), (c), (e), and (g), 306 (b) and (c), 307 (b) and (c), 308 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) and the Water Quality Act of 1987 (the “Act”); 33 U.S.C. 1311, 1314 (b), (c), (e), and (g), 1316 (b) and (c), 1317 (b) and (c), 1318 and 1361; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217; 101 Stat. 7, Pub. L. 100-4.
49 FR 8790, Mar. 8, 1984, unless otherwise noted.

40:31.0.1.1.21.10.5.1	SECTION 421.100	421.100 Applicability: Description of the primary tungsten subcategory.
40:31.0.1.1.21.10.5.2	SECTION 421.101	421.101 Specialized definitions.
40:31.0.1.1.21.10.5.3	SECTION 421.102	421.102 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
40:31.0.1.1.21.10.5.4	SECTION 421.103	421.103 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
40:31.0.1.1.21.10.5.5	SECTION 421.104	421.104 Standards of performance for new sources.
40:31.0.1.1.21.10.5.6	SECTION 421.105	421.105 Pretreatment standards for existing sources.
40:31.0.1.1.21.10.5.7	SECTION 421.106	421.106 Pretreatment standards for new sources.
40:31.0.1.1.21.10.5.8	SECTION 421.107	421.107 [Reserved]