Title 40
SECTION 421.305
421.305 Pretreatment standards for existing sources.
§ 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 |