40 CFR 421.305: Pretreatment standards for existing sources.

Except as provided in 40 CFR 403.7 and 403.13, any existing 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 existing sources. The mass of wastewater pollutants in primary and secondary titanium process wastewater introduced into a POTW must not exceed the following values:

(a) Chlorination off-gas wet air pollution control.

PSES for the Primary and Secondary Titanium Subcategory

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

mg/kg (pounds per million pounds) of TiCl4 produced

Chromium (total) 0.346 0.140

Lead 0.262 0.122

Nickel 0.515 0.346

Titanium 0.496 0.215

(b) Chlorination Area-vent wet air pollution control.

PSES for the Primary and Secondary Titanium Subcategory

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

mg/kg (pounds per million pounds) of TiCl4 produced

Chromium (total) 0.385 0.156

Lead 0.291 0.135

Nickel 0.572 0.385

Titanium 0.551 0.239

(c) TiCl4 handling wet air pollution control.

PSES for the Primary and Secondary Titanium Subcategory

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

mg/kg (pounds per million pounds) of TiCl4 handled

Chromium (total) 0.069 0.028

Lead 0.052 0.024

Nickel 0.103 0.069

Titanium 0.099 0.043

(d) Reduction area wet air pollution control.

PSES for the Primary and Secondary Titanium Subcategory

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

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

Chromium (total) 1.528 0.620

Lead 1.156 0.537

Nickel 2.272 1.528

Titanium 2.189 0.950

(e) Melt cell wet air pollution control.

PSES for the Primary and Secondary Titanium Subcategory

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

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

Chromium (total) 0.787 0.319

Lead 0.595 0.276

Nickel 1.169 0.787

Titanium 1.127 0.489

(f) Chlorine liquefaction wet air pollution control.

PSES for the Primary and Secondary Titanium Subcategory

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

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

Chromium (total) 11.010 4.463

Lead 8.332 3.868

Nickel 16.370 11.010

Titanium 15.770 6.844

(g) Sodium reduction container reconditioning wash water.

PSES for the Primary and Secondary Titanium Subcategory

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

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

Chromium (total) 0.474 0.192

Lead 0.359 0.167

Nickel 0.705 0.474

Titanium 0.679 0.295

(h) Chip crushing wet air pollution control.

PSES for the Primary and Secondary Titanium Subcategory

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

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

Chromium (total) 0.848 0.344

Lead 0.642 0.298

Nickel 1.261 0.848

Titanium 1.215 0.527

(i) Acid leachate and rinse water.

PSES for the Primary and Secondary Titanium Subcategory

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

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

Chromium (total) 4.381 1.776

Lead 3.315 1.539

Nickel 6.512 4.381

Titanium 6.275 2.723

(j) Sponge crushing and screening wet air pollution control.

PSES for the Primary and Secondary Titanium Subcategory

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

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

Chromium (total) 0.239 0.097

Lead 0.181 0.084

Nickel 0.356 0.239

Titanium 0.343 0.149

(k) Acid pickle and wash water.

PSES for the Primary and Secondary Titanium Subcategory

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

mg/kg (pounds per million pounds) of titanium pickled

Chromium (total) 0.023 0.009

Lead 0.017 0.008

Nickel 0.034 0.023

Titanium 0.032 0.014

(l) Scrap milling wet air pollution control.

PSES for the Primary and Secondary Titanium Subcategory

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

mg/kg (pounds per million pounds) of scrap milled

Chromium (total) 0.084 0.034

Lead 0.064 0.030

Nickel 0.125 0.084

Titanium 0.120 0.052

(m) Scrap detergent wash water.

PSES for the Primary and Secondary Titanium Subcategory

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

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

Chromium (total) 6.684 2.710

Lead 5.058 2.348

Nickel 9.935 6.684

Titanium 9.574 4.155

(n) Casting crucible wash water.

PSES for the Primary and Secondary Titanium Subcategory

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

mg/kg (pounds per million pounds) of titanium cast

Chromium (total) 0.176 0.072

Lead 0.134 0.062

Nickel 0.262 0.176

Titanium 0.253 0.110

(o) Casting contact cooling water.

PSES for the Primary and Secondary Titanium Subcategory

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

mg/kg (pounds per million pounds) of titanium cast

Chromium (total) 27.000 10.950

Lead 20.430 9.486

Nickel 40.140 27.000

Titanium 38.680 16.780