StacksVerified U.S. regulatory reference

40 CFR §421.153

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)Solvent extraction raffinate from bertrandite ore.
  2. (b)Solvent extraction raffinate from beryl ore.
  3. (c)Beryllium carbonate filtrate.
  4. (d)Beryllium Hydroxide Filtrate.
  5. (e)Beryllium oxide calcining furnace wet air pollution control.
  6. (f)Beryllium hydroxide supernatant.
  7. (g)Process water.
  8. (h)Fluoride furnace scrubber.
  9. (i)Chip treatment wastewater.
  10. (j)Beryllium pebble plant area vent wet air pollution control.
  11. (k)Beryl Ore Gangue Dewatering.
  12. (l)Bertrandite Ore Gangue Dewatering.
  13. (m)Beryl Ore Processing.
  14. (n)Alumium Iron Sludge (AIS) Area Wastewater.
  15. (o)Bertrandite Ore Leaching Scrubber.
  16. (p)Bertrandite Ore Countercurrent and Decantation (CCD) Scrubber.