1. LawStack
  2. Title 40 - Protection of Environment
  3. Chapter I - ENVIRONMENTAL PROTECTION AGENCY
  4. Subchapter N - EFFLUENT GUIDELINES AND STANDARDS
  5. Part 421 - NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY
  6. Subpart B - Primary Aluminum Smelting Subcategory
  7. 40 CFR § 421.20
40 CFR § 421.20
Applicability: description of the primary aluminum smelting subcategory
June 9, 2020
CFR

The provisions of this subpart are applicable to discharges resulting from the production of aluminum from alumina in the Hall-Heroult process.

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§ 421.21 Specialized definitions

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