40 CFR 421.314: Standards of performance for new sources.

Any new source subject to this subpart shall achieve the following new source performance standards:

(a) Tungsten detergent wash and rinse.

NSPS for the Secondary Tungsten and Cobalt Subcategory

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

mg/kg (pounds per million pounds) of tungsten scrap washed

Copper 0.250 0.119

Nickel 0.107 0.072

Ammonia (as N) 25.990 11.430

Cobalt 0.538 0.236

Tungsten 0.679 0.302

Oil and grease 1.950 1.950

Total suspended solids 2.925 2.340

pH (1) (1)

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

(b) Tungsten leaching acid.

NSPS for the Secondary Tungsten and Cobalt Subcategory

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

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

Copper 3.291 1.569

Nickel 1.414 0.951

Ammonia (as N) 342.700 150.700

Cobalt 7.096 3.111

Tungsten 8.947 3.985

Oil and grease 25.710 25.710

Total suspended solids 38.570 30.850

pH (1) (1)

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

(c) Tungsten post-leaching wash and rinse.

NSPS for the Secondary Tungsten and Cobalt Subcategory

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

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

Copper 6.583 3.137

Nickel 2.829 1.903

Ammonia (as N) 685.600 301.400

Tungsten 17.900 7.972

Cobalt 14.194 6.223

Oil and grease 51.430 51.430

Total suspended solids 77.150 61.720

pH (1) (1)

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

(d) Synthetic scheelite filtrate.

NSPS for the Secondary Tungsten and Cobalt Subcategory

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

mg/kg (pounds per million pounds) of synthetic scheelite produced

Copper 21.330 10.170

Nickel 9.164 6.165

Ammonia (as N) 2,221.000 976.300

Cobalt 45.984 20.160

Tungsten 57.980 25.820

Oil and grease 166.600 166.600

Total suspended solids 249.900 199.900

pH (1) (1)

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

(e) Tungsten carbide leaching wet air pollution control.

NSPS for the Secondary Tungsten and Cobalt Subcategory

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

mg/kg (pounds per million pounds) of tungsten carbide scrap leached

Copper 2.241 1.068

Nickel 0.963 0.648

Ammonia (as N) 233.400 102.600

Cobalt 4.833 2.119

Tungsten 6.093 2.714

Oil and grease 17.510 17.510

Total suspended solids 26.270 21.010

pH (1) (1)

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

(f) Tungsten carbide wash water.

NSPS for the Secondary Tungsten and Cobalt Subcategory

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

mg/kg (pounds per million pounds) of tungsten carbide produced

Copper 10.670 5.083

Nickel 4.583 3.083

Ammonia (as N) 1,111.000 488.300

Cobalt 22.999 10.083

Tungsten 29.000 12.920

Oil and grease 83.330 83.330

Total suspended solids 125.000 100.000

pH (1) (1)

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

(g) Cobalt sludge leaching wet air pollution control.

NSPS for the Secondary Tungsten and Cobalt Subcategory

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

mg/kg (pounds per million pounds) of cobalt produced from cobalt sludge

Copper 45.80 21.83

Nickel 19.68 13.24

Ammonia (as N) 4,770.00 2,097.00

Cobalt 98.756 43.295

Tungsten 124.50 55.46

Oil and grease 357.80 357.80

Total suspended solids 536.70 429.40

pH (1) (1)

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

(h) Crystallization decant.

NSPS for the Secondary Tungsten and Cobalt Subcategory

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

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

Copper 53.310 25.410

Nickel 22.910 15.410

Ammonia (as N) 5,552.000 2,441.000

Cobalt 114.954 50.397

Tungsten 144.900 64.560

Oil and grease 416.500 416.500

Total suspended solids 624.800 499.800

pH (1) (1)

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

(i) Acid wash decant.

NSPS for the Secondary Tungsten and Cobalt Subcategory

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

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

Copper 24.400 11.630

Nickel 10.490 7.053

Ammonia (as N) 2,541.000 1,117.000

Cobalt 52.611 23.065

Tungsten 66.340 29.550

Oil and grease 190.600 190.600

Total suspended solids 285.900 228.700

pH (1) (1)

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

(j) Cobalt hydroxide filtrate.

NSPS for the Secondary Tungsten and Cobalt Subcategory

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

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

Copper 72.510 34.560

Nickel 31.160 20.960

Ammonia (as N) 7,551.000 3,320.000

Cobalt 156.346 68.543

Tungsten 197.100 87.800

Oil and grease 566.500 566.500

Total suspended solids 849.700 679.800

pH (1) (1)

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

(k) Cobalt hydroxide filter cake wash.

NSPS for the Secondary Tungsten and Cobalt Subcategory

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

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

Copper 139.600 66.510

Nickel 59.970 40.340

Ammonia (as N) 14,530.000 6,389.000

Cobalt 300.094 131.932

Tungsten 379.400 169.000

Oil and grease 1,090.000 1,090.000

Total suspended solids 1,636,000 1,308.000

pH (1) (1)

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