StacksVerified U.S. regulatory reference

40 CFR §421.53

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable:
  1. (a)Subpart E—Casting Contact Cooling.
  2. (b)Subpart E—Anode and Cathode Rinse.
  3. (c)Subpart E—Spent Electrolyte.
  4. (d)Subpart E—Casting Wet Air Pollution Control.
  5. (e)Subpart E—By-Product Recovery.