# 40 CFR 420.96 - Pretreatment standards for new sources (PSNS).

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.

(a) Sulfuric acid pickling (spent acid solutions and rinse waters) -

(1) Rod, wire, coil.

Subpart I

Pollutant or pollutant property | Pretreatment standards for new sources | |
---|---|---|

Maximum for any 1 day | Average of daily values for 30 consecutive days | |

Kg/kkg (pounds per 1,000 lb) of product | ||

Lead | 0.0000939 | 0.0000313 |

Zinc | 0.000125 | 0.0000417 |

(2) Bar, billet, and bloom.

Subpart I

Pollutant or pollutant property | Pretreatment standards for new sources | |
---|---|---|

Maximum for any 1 day | Average of daily values for 30 consecutive days | |

Kg/kkg (pounds per 1,000 lb) of product | ||

Lead | 0.0000563 | 0.0000188 |

Zinc | 0.0000751 | 0.0000250 |

(3) Strip, sheet, and plate.

Subpart I

Pollutant or pollutant property | Pretreatment standards for new sources | |
---|---|---|

Maximum for any 1 day | Average of daily values for 30 consecutive days | |

Kg/kkg (pounds per 1,000 lb) of product | ||

Lead | 0.0000751 | 0.0000250 |

Zinc | 0.000100 | 0.0000334 |

(4) Pipe, tube, other products.

Subpart I

Pollutant or pollutant property | Pretreatment standards for new sources | |
---|---|---|

Maximum for any 1 day | Average of daily values for 30 consecutive days | |

Kg/kkg (pounds per 1,000 lb) of product | ||

Lead | 0.000131 | 0.0000438 |

Zinc | 0.000175 | 0.0000584 |

(5) Fume scrubber.

Subpart I

Pollutant or pollutant property | Pretreatment standards for new sources | |
---|---|---|

Maximum for any 1 day | Average of daily values for 30 consecutive days | |

Kilograms per day | ||

Lead | 0.0368 | 0.0123 |

Zinc | 0.0491 | 0.0164 |

Note: The above limitations are applicable to each fume scrubber associated with sulfuric acid pickling operations.

(b) Hydrochloric acid pickling (spent acid solutions and rinse waters) -

(1) Rod, wire, coil.

Subpart I

Pollutant or pollutant property | Pretreatment standards for new sources | |
---|---|---|

Maximum for any 1 day | Average of daily values for 30 consecutive days | |

Kg/kkg (pounds per 1,000 lb) of product | ||

Lead | 0.000113 | 0.0000376 |

Zinc | 0.000150 | 0.0000501 |

(2) Strip, sheet, and plate.

Subpart I

Pollutant or pollutant property | Pretreatment standards for new sources | |
---|---|---|

Maximum for any 1 day | Average of daily values for 30 consecutive days | |

Kg/kkg (pounds per 1,000 lb) of product | ||

Lead | 0.0000751 | 0.0000250 |

Zinc | 0.000100 | 0.0000334 |

(3) Pipe, tube, and other products.

Subpart I

Pollutant or pollutant property | Pretreatment standards for new sources | |
---|---|---|

Maximum for any 1 day | Average of daily values for 30 consecutive days | |

Kg/kkg (pounds per 1,000 lb) of product | ||

Lead | 0.000206 | 0.0000688 |

Zinc | 0.000275 | 0.0000918 |

(4) Fume scrubber.

Subpart I

Pollutant or pollutant property | Pretreatment standards for new sources | |
---|---|---|

Maximum for any 1 day | Average of daily values for 30 consecutive days | |

Kilograms per day | ||

Lead | 0.0368 | 0.0123 |

Zinc | 0.0491 | 0.0164 |

Note: The above limitations shall be applicable for each fume scrubber associated with hydrochloric acid pickling operations.

(c) Combination acid pickling (spent acid solutions and rinse waters) -

(1) Rod, wire, and coil.

Subpart I

Pollutant or pollutant property | Pretreatment standards for new sources | |
---|---|---|

Maximum for any 1 day | Average of daily values for 30 consecutive days | |

kg/kkg (pounds per 1,000 lb) of product | ||

Chromium | 0.000292 | 0.000117 |

Nickel | 0.000263 | 0.0000876 |

(2) Bar, billet, and bloom.

Subpart I

Pollutant or pollutant property | Pretreatment standards for new sources | |
---|---|---|

Maximum for any 1 day | Average of daily values for 30 consecutive days | |

kg/kkg (pounds per 1,000 lb) of product | ||

Chromium | 0.000167 | 0.0000667 |

Nickel | 0.000150 | 0.0000501 |

(3) Strip, sheet, and plate - continuous.

Subpart I

Pollutant or pollutant property | Pretreatment standards for new sources | |
---|---|---|

Maximum for any 1 day | Average of daily values for 30 consecutive days | |

kg/kkg (pounds per 1,000 lb) of product | ||

Chromium | 0.000710 | 0.000284 |

Nickel | 0.000638 | 0.000213 |

(4) Strip, sheet, and plate - batch.

Subpart I

Pollutant or pollutant property | Pretreatment standards for new sources | |
---|---|---|

Maximum for any 1 day | Average of daily values for 30 consecutive days | |

kg/kkg (pounds per 1,000 lb) of product | ||

Chromium | 0.000250 | 0.000100 |

Nickel | 0.000225 | 0.0000751 |

(5) Pipe, tube, and other products.

Subpart I

Pollutant or pollutant property | Pretreatment standards for new sources | |
---|---|---|

Maximum for any 1 day | Average of daily values for 30 consecutive days | |

Kg/kkg (pounds per 1,000 lb) of product | ||

Chromium | 0.000418 | 0.000167 |

Nickel | 0.000376 | 0.000125 |

(6) Fume scrubber.

Subpart I

Pollutant or pollutant property | Pretreatment standards for new sources | |
---|---|---|

Maximum for any 1 day | Average of daily values for 30 consecutive days | |

Kilograms per day | ||

Chromium | 0.0819 | 0.0327 |

Nickel | 0.0735 | 0.0245 |

Note: The above limitations shall be applicable for each fume scrubber associated with combination acid pickling operations.