40 CFR 421.336: Pretreatment standards for new sources.

Except as provided in 40 CFR 403.7, any new source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for new sources. The mass of wastewater pollutants in primary zirconium and hafnium process wastewater introduced into a POTW shall not exceed the following values:

(a) Sand drying wet air pollution control.

PSNS 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) 0.210 0.085

Cyanide (total) 0.114 0.045

Lead 0.159 0.074

Nickel 0.312 0.210

Ammonia (as N) 75.710 33.280

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

PSNS 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) 16.080 6.521

Cyanide (total) 8.690 3.478

Lead 12.170 5.651

Nickel 23.910 16.080

Ammonia (as N) 5,795.000 2,547.000

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

PSNS 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) 3.154 1.279

Cyanide (total) 1.705 0.682

Lead 2.387 1.108

Nickel 4.688 3.154

Ammonia (as N) 1,136.000 499.500

(d) SiCl4 purification wet air pollution control.

PSNS 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) 2.774 1.125

Cyanide (total) 1.500 0.600

Lead 2.099 0.975

Nickel 4.124 2.774

Ammonia (as N) 999.500 439.400

(e) Feed makeup wet air pollution control.

PSNS 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) 2.103 0.852

Cyanide (total) 1.137 0.455

Lead 1.591 0.739

Nickel 3.126 2.103

Ammonia (as N) 757.500 333.000

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

PSNS 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) 0.830 0.337

Cyanide (total) 0.449 0.180

Lead 0.628 0.292

Nickel 1.234 0.830

Ammonia (as N) 299.100 131.500

(g) Zirconium filtrate.

PSNS 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) 14.350 5.819

Cyanide (total) 7.758 3.103

Lead 10.860 5.043

Nickel 21.340 14.350

Ammonia (as N) 5,171.000 2,273.000

(h) Hafnium filtrate.

PSNS 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

(i) Calcining caustic wet air pollution control.

PSNS 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) 3.329 1.350

Cyanide (total) 1.799 0.720

Lead 2.519 1.170

Nickel 4.948 3.329

Ammonia (as N) 1,199.000 527.200

(j) Pure chlorination wet air pollution control.

PSNS 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) 14.180 5.748

Cyanide (total) 7.663 3.065

Lead 10.730 4.981

Nickel 21.007 14.180

Ammonia (as N) 5,108.000 2,245,000

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

PSNS 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) 1.364 0.553

Cyanide (total) 0.737 0.295

Lead 1.032 0.479

Nickel 2.027 1.364

Ammonia (as N) 491.300 216.000

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

PSNS 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) 7.671 3.110

Cyanide (total) 4.147 1.659

Lead 5.805 2.695

Nickel 11.400 7.671

Ammonia (as N) 2,764.000 1,215.000

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

PSNS 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) 4.262 1.728

Cyanide (total) 2.304 0.921

Lead 3.225 1.497

Nickel 6.335 4.262

Ammonia (as N) 1,535,000 675.00

(n) Zirconium chip crushing wet air pollution control.

PSNS 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

(o) Acid leachate from zirconium metal production.

PSNS 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) 10.900 4.420

Cyanide (total) 5.893 2.357

Lead 8.250 3.831

Nickel 16.210 10.900

Ammonia (as N) 3,928.000 1,674.00

(p) Acid leachate from zirconium alloy production.

PSNS 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) 5.835 2.366

Cyanide (total) 3.154 1.262

Lead 4.416 2.050

Nickel 8.674 5.835

Ammonia (as N) 2,102.000 895.800

(q) Leaching rinse water from zirconium metal production.

PSNS 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) 21.810 8.840

Cyanide (total) 11.790 4.715

Lead 16.500 7.661

Nickel 32.410 21.810

Ammonia (as N) 7,856.000 3,453.000

(r) Leaching rinse water from zirconium alloy production.

PSNS 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) 0.292 0.118

Cyanide (total) 0.158 0.063

Lead 0.221 0.103

Nickel 0.434 0.292

Ammonia (as N) 105.200 46.240