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 Code of Federal Regulations (Last Updated: November 8, 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 J - Cold Forming Subcategory

  § 420.102 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).  

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  • § 420.102 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

    Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

    (a) Cold rolling mills -

    (1) Recirculation - single stand.

    Subpart J

    Pollutant or pollutant property BPT effluent limitations
    Maximum for any 1 day Average of daily values for 30 consecutive days
    Kg/kkg (pounds per 1,000 lb) of product
    TSS 0.00125 0.000626
    O&G 0.000522 0.000209
    Chromium1 0.0000209 0.0000084
    Lead 0.0000094 0.0000031
    Nickel1 0.0000188 0.0000063
    Zinc 0.0000063 0.0000021
    Naphthalene 0.0000021
    Tetrachloroethylene 0.0000031
    pH (2) (2)

    1 The limitations for chromium and nickel shall be applicable in lieu of those for lead and zinc when cold rolling wastewaters are treated with descaling or combination acid pickling wastewaters.

    2 Within the range of 6.0 to 9.0.

    (2) Recirculation - multiple stands.

    Subpart J

    Pollutant or pollutant property BPT effluent limitations
    Maximum for any 1 day Average of daily values for 30 consecutive days
    Kg/kkg (pounds per 1,000 lb) of product
    TSS 0.00626 0.00313
    O&G 0.00261 0.00104
    Chromium1 0.000104 0.0000418
    Lead 0.0000469 0.0000156
    Nickel1 0.0000939 0.0000313
    Zinc 0.0000313 0.0000104
    Naphthalene 0.0000104
    Tetrachloroethylene 0.0000156
    pH (2) (2)

    1 The limitations for chromium and nickel shall be applicable in lieu of those for lead and zinc when cold rolling wastewaters are treated with descaling or combination acid pickling wastewaters.

    2 Within the range of 6.0 to 9.0.

    (3) Combination.

    Subpart J

    Pollutant or pollutant property BPT effluent limitations
    Maximum for any 1 day Average of daily values for 30 consecutive days
    Kg/kkg (pounds per 1,000 lb) of product
    TSS 0.0751 0.0376
    O&G 0.0313 0.0125
    Chromium1 0.00125 0.000501
    Lead 0.000563 0.000188
    Nickel1 0.00113 0.000376
    Zinc 0.000376 0.000125
    Naphthalene 0.000125
    Tetrachloroethylene 0.000188
    pH (2) (2)

    1 The limitations for chromium and nickel shall be applicable in lieu of those for lead and zinc when cold rolling wastewaters are cotreated with descaling or combination acid pickling wastewaters.

    2 Within the range of 6.0 to 9.0.

    (4) Direct application - single stand.

    Subpart J

    Pollutant or pollutant property BPT effluent limitations
    Maximum for any 1 day Average of daily values for 30 consecutive days
    Kg/kkg (pounds per 1,000 lb) of product
    TSS 0.0225 0.0113
    O&G 0.00939 0.00376
    Chromium1 0.000376 0.000150
    Lead 0.000169 0.0000563
    Nickel1 0.000338 0.000113
    Zinc 0.000113 0.0000376
    Naphthalene 0.0000376
    Tetrachloroethylene 0.0000563
    pH (2) (2)

    1 The limitations for chromium and nickel shall be applicable in lieu of those for lead and zinc when cold rolling wastewaters are treated with descaling or combination acid pickling wastewaters.

    2 Within the range of 6.0 to 9.0.

    (5) Direct application - multiple stands.

    Subpart J

    Pollutant or pollutant property BPT effluent limitations
    Maximum for any 1 day Average of daily values for 30 consecutive days
    Kg/kkg (pounds per 1,000 lb) of product
    TSS 0.100 0.0501
    O&G 0.0417 0.0167
    Chromium1 0.00167 0.000668
    Lead 0.000751 0.000250
    Nickel1 0.00150 0.000501
    Zinc 0.000501 0.000167
    Naphthalene 0.000167
    Tetrachloroethylene 0.000250
    pH (2) (2)

    1 The limitations for chromium and nickel shall be applicable in lieu of those for lead and zinc when cold rolling wastewaters are treated with descaling or combination acid pickling wastewaters.

    2 Within the range of 6.0 to 9.0.

    (b) Cold worked pipe and tube -

    (1) Using water.

    Subpart J

    Pollutant of pollutant property BPT effluent limitations
    Maximum for any 1 day Average of daily values for 30 consecutive days
    Kg/kkg (pounds per 1,000 lb) of product
    TSS 0.00125 0.000626
    O&G 0.000522 0.000209
    Chromium1 0.0000209 0.0000084
    Lead 0.0000094 0.0000031
    Nickel1 0.0000188 0.0000063
    Zinc 0.0000063 0.0000021
    pH (2) (2)

    1 The limitations for chromium and nickel shall be applicable in lieu of those for lead and zinc when cold forming wastewaters are treated with descaling or combination acid pickling wastewaters.

    2 Within the range of 6.0 to 9.0.

    (2) Using oil solutions.

    Subpart J

    Pollutant or pollutant property BPT effluent limitations
    Maximum for any 1 day Average of daily values for 30 consecutive days
    Kg/kkg (pounds per 1,000 lb) of product
    TSS 0.00125 0.000626
    O&G 0.000522 0.000209
    Chromium1 0.0000209 0.0000084
    Lead 0.0000094 0.0000031
    Nickel1 0.0000188 0.0000063
    Zinc 0.0000063 0.0000021
    Naphthalene 0.0000021
    Tetrachloroethylene 0.0000031
    pH (2) (2)

    1 The limitations for chromium and nickel shall be applicable in lieu of those for lead and zinc when cold forming wastewaters are treated with descaling or combination acid pickling wastewaters.

    2 Within the range of 6.0 to 9.0.

    [47 FR 23284, May 27, 1982, as amended at 49 FR 21034, May 17, 1984; 49 FR 24726, June 15, 1984]