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 Code of Federal Regulations (Last Updated: July 5, 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 B - Sintering Subcategory

  § 420.25 - Pretreatment standards for existing sources (PSES).  

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  • § 420.25 Pretreatment standards for existing sources (PSES).

    Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart that introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and must achieve the following pretreatment standards for existing sources (PSES):

    (a) Sintering operations with wet air pollution control system. The following table presents PSES for sintering operations with wet air pollution control systems:

    Subpart B - Pretreatment Standards for Existing Sources (PSES)

    Regulated parameter Maximum daily1 Maximum monthly avg.1
    Ammonia-N2 3 0.0150 0.00501
    Cyanide2 0.00300 0.00150
    Phenols (4AAP)2 0.000100 0.0000501
    Lead 0.000451 0.000150
    Zinc 0.000676 0.000225
    2,3,7,8-TCDF <ML

    1 Pounds per thousand lb of product.

    2 The pretreatment standards for these parameters apply only when sintering wastewater is co-treated with ironmaking wastewater.

    3 The pretreatment standards for ammonia are not applicable to sources that discharge to a POTW with nitrification capability (defined at § 420.02(s)).

    (b) Sintering operations with dry air pollution control system. There shall be no discharge of process wastewater pollutants to POTWs.

    [67 FR 64265, Oct. 17, 2002]