40 CFR 421.332: Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

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 practicable technology currently available:

(a) Sand drying wet air pollution control.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

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

mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced

Chromium (total) 0.250 0.102

Cyanide (total) 0.165 0.068

Lead 0.239 0.114

Nickel 1.091 0.721

Ammonia (as N) 75.710 33.280

Total suspended solids 23.290 11.080

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times.

(b) Sand chlorination off-gas wet air pollution control.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

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

mg/kg (pounds per million pounds) of zironium dioxide and hafnium dioxide produced

Chromium (total) 19.130 7.825

Cyanide (total) 12.610 5.216

Lead 18.260 8.694

Nickel 83.460 55.210

Ammonia (as N) 5,795.000 2,547.000

Total suspended solids 1,782.000 847.700

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times.

(c) Sand chlorination area-vent wet air pollution control.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

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

mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced

Chromium (total) 3.751 1.534

Cyanide (total) 2.472 1.023

Lead 3.580 1.705

Nickel 16.370 10.830

Ammonia (as N) 1,136.000 449.500

Total suspended solids 349.500 166.200

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times.

(d) SiCl4 purification wet air pollution control.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

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

mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced

Chromium (total) 3.299 1.350

Cyanide (total) 2.174 0.900

Lead 3.149 1.500

Nickel 14.400 9.522

Ammonia (as N) 999.500 439.400

Total suspended solids 307.400 146.200

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times.

(e) Feed makeup wet air pollution control.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

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

mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced

Chromium (total) 2.501 1.023

Cyanide (total) 1.648 0.682

Lead 2.387 1.137

Nickel 10.910 7.217

Ammonia (as N) 757.500 333.000

Total suspended solids 233.000 110.800

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times.

(f) Iron extraction (MIBK) steam stripper bottoms.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

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

mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced

Chromium (total) 0.987 0.404

Cyanide (total) 0.651 0.269

Lead 0.942 0.449

Nickel 4.308 2.850

Ammonia (as N) 299.100 131.500

Total suspended solids 92.000 43.760

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times.

(g) Zirconium filtrate.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

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

mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced

Chromium (total) 17.070 6.982

Cyanide (total) 11.250 4.655

Lead 16.290 7.758

Nickel 74.480 49.260

Ammonia (as N) 5,171.000 2,273.000

Total suspended solids 1,590.000 756.400

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times.

(h) Hafnium filtrate.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

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

mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced

Chromium (total) 0.000 0.000

Cyanide (total) 0.000 0.000

Lead 0.000 0.000

Nickel 0.000 0.000

Ammonia (as N) 0.000 0.000

Total suspended solids 0.000 0.000

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times.

(i) Calcining caustic wet air pollution control.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

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

mg/kg (pounds per million pounds) of zirconium dioxide and hafnium dioxide produced

Chromium (total) 3.959 1.619

Cyanide (total) 2.609 1.080

Lead 3.779 1.799

Nickel 17.270 11.430

Ammonia (as N) 1,199.000 527.200

Total suspended solids 368.900 175.400

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times.

(j) Pure chlorination wet air pollution control.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

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

mg/kg (pounds per million pounds) of zirconium and hafnium produced

Chromium (total) 16.860 6.897

Cyanide (total) 11.110 4.598

Lead 16.090 7.663

Nickel 73.570 48.660

Ammonia (as N) 5,108.000 2,245.000

Total suspended solids 1,571.000 747.200

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times.

(k) Reduction area-vent wet air pollution control.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

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

mg/kg (pounds per million pounds) of zirconium and hafnium produced

Chromium (total) 1.622 0.663

Cyanide (total) 1.069 0.442

Lead 1.548 0.737

Nickel 7.077 4.681

Ammonia (as N) 491.300 216.000

Total suspended solids 151.100 71.880

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times.

(l) Magnesium recovery off-gas wet air pollution control.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

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

mg/kg (pounds per million pounds) of zirconium and hafnium produced

Chromium (total) 9.123 3.732

Cyanide (total) 6.013 2.488

Lead 8.708 4.147

Nickel 39.810 26.330

Ammonia (as N) 2,764.000 1,215.000

Total suspended solids 850.100 404.300

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times.

(m) Magnesium recovery area-vent wet air pollution control.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

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

mg/kg (pounds per million pounds) of zirconium and hafnium produced

Chromium (total) 5.068 2.073

Cyanide (total) 3.340 1.382

Lead 4.838 2.304

Nickel 22.110 14.630

Ammonia (as N) 1,535.000 675.000

Total suspended solids 472.200 224.600

pH (1) (1)

1 Within the range of 7.5 to 10.0. .

(n) Zirconium chip crushing wet air pollution control.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

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

mg/kg (pounds per million pounds) of zirconium and hafnium produced

Chromium (total) 0.000 0.000

Cyanide (total) 0.000 0.000

Lead 0.000 0.000

Nickel 0.000 0.000

Ammonia (as N) 0.000 0.000

Total suspended solids 0.000 0.000

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times.

(o) Acid leachate from zirconium metal production.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

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

mg/kg (pounds per million pounds) of pure zirconium produced

Chromium (total) 12.970 5.304

Cyanide (total- 8.545 3.536

Lead 12.380 5.893

Nickel 56.570 37.420

Ammonia (as N) 3,928.000 1,727.000

Total suspended solids 1,208.000 574.600

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times.

(p) Acid leachate from zirconium alloy production.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

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

mg/kg (pounds per million pounds) of zirconium contained in alloys produced

Chromium (total) 6.939 2.839

Cyanide (total) 4.574 1.893

Lead 6.624 3.154

Nickel 30.280 20.030

Ammonia (as N) 2,102.000 924.200

Total suspended solids 646.600 307.600

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times.

(q) Leaching rinse water from zirconium metal production.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

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

mg/kg (pounds per million pounds) of zirconium produced

Chromium (total) 25.930 10.610

Cyanide (total) 17.090 7.072

Lead 24.750 11.790

Nickel 113.200 74.840

Ammonia (as N) 7,856.000 3,453.000

Total suspended solids 2,416.000 1,149.000

pH (1) (1)

1 Within the range of 7.5 to 10.0.

(r) Leaching rinse water from zirconium alloy production.

BPT Limitations for the Primary Zirconium and Hafnium Subcategory

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

mg/kg (pounds per million pounds) of zirconium in alloys produced

Chromium (total) 0.347 0.142

Cyanide (total) 0.229 0.095

Lead 0.331 0.158

Nickel 1.515 1.002

Ammonia (as N) 105.200 46.240

Total suspended solids 32.350 15.390

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times.