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Regulations last checked for updates: Nov 22, 2024
Title 40 - Protection of Environment last revised: Nov 20, 2024
All Titles
Title 40
Chapter I
Part 421 - PART 421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY
GENERAL PROVISIONS
§ 421.1 - Applicability.
§ 421.2 - [Reserved]
§ 421.3 - Monitoring and reporting requirements.
§ 421.4 - Compliance date for pretreatment standards for existing sources (PSES).
§ 421.5 - Removal allowances for pretreatment standards.
Subpart A [§ 421.10 - § 421.16] - Subpart A—Bauxite Refining Subcategory
Subpart B [§ 421.20 - § 421.27] - Subpart B—Primary Aluminum Smelting Subcategory
Subpart C [§ 421.30 - § 421.37] - Subpart C—Secondary Aluminum Smelting Subcategory
Subpart D [§ 421.40 - § 421.47] - Subpart D—Primary Copper Smelting Subcategory
Subpart E [§ 421.50 - § 421.57] - Subpart E—Primary Electrolytic Copper Refining Subcategory
Subpart F [§ 421.60 - § 421.67] - Subpart F—Secondary Copper Subcategory
Subpart G [§ 421.70 - § 421.77] - Subpart G—Primary Lead Subcategory
Subpart H [§ 421.80 - § 421.87] - Subpart H—Primary Zinc Subcategory
Subpart I [§ 421.90 - § 421.97] - Subpart I—Metallurgical Acid Plants Subcategory
Subpart J [§ 421.100 - § 421.107] -
Subpart K [§ 421.110 - § 421.117] - Subpart K—Primary Columbium-Tantalum Subcategory
Subpart L [§ 421.120 - § 421.127] - Subpart L—Secondary Silver Subcategory
Subpart M [§ 421.130 - § 421.137] - Subpart M—Secondary Lead Subcategory
Subpart N [§ 421.140 - § 421.147] - Subpart N—Primary Antimony Subcategory
Subpart O [§ 421.150 - § 421.157] - Subpart O—Primary Beryllium Subcategory
Subpart P [§ 421.180 - § 421.187] - Subpart P—Primary and Secondary Germanium and Gallium Subcategory
Subpart Q [§ 421.190 - § 421.197] - Subpart Q—Secondary Indium Subcategory
Subpart R [§ 421.200 - § 421.207] - Subpart R—Secondary Mercury Subcategory
Subpart S [§ 421.210 - § 421.217] - Subpart S—Primary Molybdenum and Rhenium Subcategory
Subpart T [§ 421.220 - § 421.227] - Subpart T—Secondary Molybdenum and Vanadium Subcategory
Subpart U [§ 421.230 - § 421.237] - Subpart U—Primary Nickel and Cobalt Subcategory
Subpart V [§ 421.240 - § 421.247] - Subpart V—Secondary Nickel Subcategory
Subpart W [§ 421.250 - § 421.257] - Subpart W—Primary Precious Metals and Mercury Subcategory
Subpart X [§ 421.260 - § 421.267] - Subpart X—Secondary Precious Metals Subcategory
Subpart Y [§ 421.270 - § 421.277] - Subpart Y—Primary Rare Earth Metals Subcategory
Subpart Z [§ 421.280 - § 421.287] - Subpart Z—Secondary Tantalum Subcategory
Subpart AA [§ 421.290 - § 421.297] - Subpart AA—Secondary Tin Subcategory
Subpart AB [§ 421.300 - § 421.307] - Subpart AB—Primary and Secondary Titanium Subcategory
Subpart AC [§ 421.310 - § 421.317] - Subpart AC—Secondary Tungsten and Cobalt Subcategory
Subpart AD [§ 421.320 - § 421.327] - Subpart AD—Secondary Uranium Subcategory
Subpart AE [§ 421.330 - § 421.337] - Subpart AE—Primary Zirconium and Hafnium Subcategory
authority:
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
,
c
,
e
,
and
, 1316 (b) and
c
, 1317 (b) and
c
,
1318
; 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.
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