Title 40

PART 421 SUBPART W

Subpart W - Primary Precious Metals and Mercury Subcategory Source:50 FR 38361, Sept. 20, 1985, unless otherwise noted.

• 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.
• Source: 49 FR 8790, Mar. 8, 1984, unless otherwise noted.

40:31.0.1.1.21.23.5.1	SECTION 421.250	421.250 Applicability: Description of the primary precious metals and mercury subcategory.
40:31.0.1.1.21.23.5.2	SECTION 421.251	421.251 Specialized definitions.
40:31.0.1.1.21.23.5.3	SECTION 421.252	421.252 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
40:31.0.1.1.21.23.5.4	SECTION 421.253	421.253 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
40:31.0.1.1.21.23.5.5	SECTION 421.254	421.254 Standards of performance for new sources.
40:31.0.1.1.21.23.5.6	SECTION 421.255	421.255 [Reserved]
40:31.0.1.1.21.23.5.7	SECTION 421.256	421.256 Pretreatment standards for new sources.
40:31.0.1.1.21.23.5.8	SECTION 421.257	421.257 [Reserved]

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