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Federal regulations · Through 2026-08-25 · Newer source version available

40 CFR 421.153: Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

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Where this section sits in the code
  1. Title 40—Protection of Environment
  2. CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY
  3. SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS
  4. PART 421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY
  5. Subpart O—Primary Beryllium Subcategory

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:

(a) Solvent extraction raffinate from bertrandite ore.

BAT Limitations for the Primary Beryllium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of beryllium carbonate produced from bertrandite ore as beryllium

Beryllium 1,842.000 831.000

Chromium (total) 831.000 336.900

Copper 2,875.000 1,370.000

Cyanide (total) 449.200 179.700

Ammonia (as N) 299,400.000 131,600.000

Fluoride 78,610.000 44,700.000

(b) Solvent extraction raffinate from beryl ore.

BAT Limitations for the Primary Beryllium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of beryllium carbonate produced from beryl ore as beryllium

Beryllium 180.4 81.4

Chromium (total) 81.4 33.0

Copper 281.6 134.2

Cyanide (total) 44.0 17.6

Ammonia (as N) 29,330.0 12,890.0

Fluoride 7,700.0 4,378.0

(c) Beryllium carbonate filtrate.

BAT Limitations for the Primary Beryllium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of beryllium carbonate produced as beryllium

Beryllium 175.900 79.370

Chromium (total) 79.370 32.180

Copper 274.600 130.800

Cyanide (total) 42.900 17.160

Ammonia (as N) 28,590.000 12,570.000

Fluoride 7,508.000 4,269.000

(d) Beryllium Hydroxide Filtrate.

BAT Limitations for the Primary Beryllium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of beryllium hydroxide produced as beryllium

Beryllium 111.520 50.320

Chromium (Total) 50.320 20.400

Copper 174.080 82.960

Cyanide (Total) 27.200 10.880

Ammonia (as N) 18128.800 7969.600

Fluoride 4760.000 2706.400

(e) Beryllium oxide calcining furnace wet air pollution control.

BAT Limitations for the Primary Beryllium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of beryllium oxide produced

Beryllium 216.20 97.57

Chromium (total) 97.57 39.56

Copper 337.50 160.90

Cyanide (total) 52.74 21.10

Ammonia (as N) 35,150.00 15,450.00

Fluoride 9,230.00 5,248.00

(f) Beryllium hydroxide supernatant.

BAT Limitations for the Primary Beryllium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of beryllium hydroxide produced from scrap and residues as beryllium

Beryllium 188.6 85.1

Chromium (total) 85.1 34.5

Copper 294.4 140.3

Cyanide (total) 46.0 18.4

Ammonia (as N) 30,660.0 13,480.0

Fluoride 160,308.0 71,201.0

(g) Process water.

BAT Limitations for the Primary Beryllium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of beryllium pebbles produced

Beryllium 143.30 64.68

Chromium (total) 64.68 26.22

Copper 223.70 106.60

Cyanide (total) 34.96 13.98

Ammonia (as N) 23,300.00 10,240.00

Fluoride 6,118.00 3,479.00

(h) Fluoride furnace scrubber.

BAT Limitations for the Primary Beryllium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of beryllium pebbles produced

Beryllium 0.000 0.000

Chromium (total) 0.000 0.000

Copper 0.000 0.000

Cyanide (total) 0.000 0.000

Ammonia (as N) 0.000 0.000

Fluoride 0.000 0.000

(i) Chip treatment wastewater.

BAT Limitations for the Primary Beryllium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of beryllium scrap chips treated

Beryllium 6.355 2.868

Chromium (total) 2.868 1.163

Copper 9.920 4.728

Cyanide (total) 1.550 0.620

Ammonia (as N) 1,033.000 454.200

Fluoride 271.300 154.200

(j) Beryllium pebble plant area vent wet air pollution control.

BAT Limitations for the Primary Beryllium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of beryllium pebbles produced

Beryllium 0.000 0.000

Chromium (total) 0.000 0.000

Copper 0.000 0.000

Cyanide (total) 0.000 0.000

Ammonia (as N) 0.000 0.000

Fluoride 0.000 0.000

(k) Beryl Ore Gangue Dewatering.

BAT Limitations for the Primary Beryllium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of beryl ore processed

Beryllium 0.855 0.386

Chromium (Total) 0.386 0.156

Copper 1.335 0.636

Cyanide (Total) 0.209 0.083

Ammonia (as N) 139.032 61.120

Fluoride 36.505 20.756

(l) Bertrandite Ore Gangue Dewatering.

BAT Limitations for the Primary Beryllium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of bertrandite ore processed

Beryllium 2.185 0.986

Chromium (Total) 0.986 0.400

Copper 3.411 1.626

Cyanide (Total) 0.533 0.213

Ammonia (as N) 355.245 156.169

Fluoride 93.275 53.034

(m) Beryl Ore Processing.

BAT Limitations for the Primary Beryllium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of beryl ore processed

Beryllium 5.988 2.702

Chromium (Total) 2.702 1.095

Copper 9.348 4.455

Cyanide (Total) 1.461 0.584

Ammonia (as N) 973.490 427.956

Fluoride 255.605 145.330

(n) Alumium Iron Sludge (AIS) Area Wastewater.

BAT Limitations for the Primary Beryllium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg (pounds per million pounds) of total beryllium carbonate produced as beryllium

Beryllium 383.760 173.160

Chromium (Total) 173.160 70.200

Copper 599.040 285.480

Cyanide (Total) 93.600 37.440

Ammonia (as N) 62384.400 27424.800

Fluoride 16380.000 9313.200

(o) Bertrandite Ore Leaching Scrubber.

BAT Limitations for the Primary Beryllium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg of bertrandite ore processed

Beryllium 1.239 0.559

Chromium (Total) 0.559 0.227

Copper 1.934 0.922

Cyanide (Total) 0.302 0.121

Ammonia (as N) 201.416 88.545

Fluoride 52.885 30.069

(p) Bertrandite Ore Countercurrent and Decantation (CCD) Scrubber.

BAT Limitations for the Primary Beryllium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/kg of bertrandite ore processed

Beryllium 0.083 0.037

Chromium (Total) 0.037 0.015

Copper 0.129 0.062

Cyanide (Total) 0.020 0.008

Ammonia (as N) 13.463 5.919

Fluoride 3.535 2.010

Collected 2026-08-27T02:26:04Z. Source file · JSON

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