StacksVerified U.S. regulatory reference

40 CFR §421.114

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Any new source subject to this subpart shall achieve the following new source performance standards:
  1. (a)Subpart K—Concentrate Digestion Wet Air Pollution Control.
  2. (b)Subpart K—Solvent Extraction Raffinate.
  3. (c)Subpart K—Solvent Extraction Wet Air Pollution Control.
  4. (d)Subpart K—Precipitation and Filtration.
  5. (e)Subpart K—Precipitation and Filtration Wet Air Pollution Control.
  6. (f)Subpart K—Tantalum Salt Drying.
  7. (g)Subpart K—Oxides Calcining Wet Air Pollution Control.
  8. (h)Subpart K—Reduction of Tantalum Salt to Metal.
  9. (i)Subpart K—Reduction of Tantalum Salt to Metal Wet Air Pollution Control.
  10. (j)Subpart K—Tantalum Powder Wash.
  11. (k)Subpart K—Consolidation and Casting Contact Cooling.