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 Code of Federal Regulations (Last Updated: May 6, 2024)
 Title 40 - Protection of Environment
 Chapter I - Environmental Protection Agency
 SubChapter N - Effluent Guidelines and Standards
 Part 420 - Iron and Steel Manufacturing Point Source Category
 Subpart I - Acid Pickling Subcategory

  § 420.96 - Pretreatment standards for new sources (PSNS).  

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  • § 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.

    [47 FR 23284, May 27, 1982, as amended at 47 FR 41739, Sept. 22, 1982; 49 FR 21033, May 17, 1984]