40 CFR Part 421 - NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY

  1. Subpart A - Bauxite Refining Subcategory (§§ 421.10 - 421.16)
  2. Subpart B - Primary Aluminum Smelting Subcategory (§§ 421.20 - 421.27)
  3. Subpart C - Secondary Aluminum Smelting Subcategory (§§ 421.30 - 421.37)
  4. Subpart D - Primary Copper Smelting Subcategory (§§ 421.40 - 421.47)
  5. Subpart E - Primary Electrolytic Copper Refining Subcategory (§§ 421.50 - 421.57)
  6. Subpart F - Secondary Copper Subcategory (§§ 421.60 - 421.67)
  7. Subpart G - Primary Lead Subcategory (§§ 421.70 - 421.77)
  8. Subpart H - Primary Zinc Subcategory (§§ 421.80 - 421.87)
  9. Subpart I - Metallurgical Acid Plants Subcategory (§§ 421.90 - 421.97)
  10. Subpart J - Primary Tungsten Subcategory (§§ 421.100 - 421.107)
  11. Subpart K - Primary Columbium-Tantalum Subcategory (§§ 421.110 - 421.117)
  12. Subpart L - Secondary Silver Subcategory (§§ 421.120 - 421.127)
  13. Subpart M - Secondary Lead Subcategory (§§ 421.130 - 421.137)
  14. Subpart N - Primary Antimony Subcategory (§§ 421.140 - 421.147)
  15. Subpart O - Primary Beryllium Subcategory (§§ 421.150 - 421.157)
  16. Subpart P - Primary and Secondary Germanium and Gallium Subcategory (§§ 421.180 - 421.187)
  17. Subpart Q - Secondary Indium Subcategory (§§ 421.190 - 421.197)
  18. Subpart R - Secondary Mercury Subcategory (§§ 421.200 - 421.207)
  19. Subpart S - Primary Molybdenum and Rhenium Subcategory (§§ 421.210 - 421.217)
  20. Subpart T - Secondary Molybdenum and Vanadium Subcategory (§§ 421.220 - 421.227)
  21. Subpart U - Primary Nickel and Cobalt Subcategory (§§ 421.230 - 421.237)
  22. Subpart V - Secondary Nickel Subcategory (§§ 421.240 - 421.247)
  23. Subpart W - Primary Precious Metals and Mercury Subcategory (§§ 421.250 - 421.257)
  24. Subpart X - Secondary Precious Metals Subcategory (§§ 421.260 - 421.267)
  25. Subpart Y - Primary Rare Earth Metals Subcategory (§§ 421.270 - 421.277)
  26. Subpart Z - Secondary Tantalum Subcategory (§§ 421.280 - 421.287)
  27. Subpart AA - Secondary Tin Subcategory (§§ 421.290 - 421.297)
  28. Subpart AB - Primary and Secondary Titanium Subcategory (§§ 421.300 - 421.307)
  29. Subpart AC - Secondary Tungsten and Cobalt Subcategory (§§ 421.310 - 421.317)
  30. Subpart AD - Secondary Uranium Subcategory (§§ 421.320 - 421.327)
  31. Subpart AE - Primary Zirconium and Hafnium Subcategory (§§ 421.330 - 421.337)
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 (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.