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Indiana Department of Environmental Management

Compliance and Technical Assistance Program

CTAP > Plating > Chromium Electroplating Operations Chromium Electroplating Operations

Amendments to 40 CFR 63, Subpart N

After September 21, 2015 additions of Perfluorooctane Sulfonic Acid and Perfluorooctane Sulfonate (PFOS) to any chromium electroplating and/or anodizing tank are prohibited. The U.S. Environmental Protection Agency (U.S. EPA) may grant a one year extension from this date to assist with compliance.

For further information as to non-PFOS alternatives, please contact Compliance Technical Assistance Program (CTAP) staff (800-988-7901, A CTAP consultation request can be made as well.

Emission Limit Reductions

By September 19, 2014, existing operations must meet the following limits:

  • Regarding open & enclosed hard chromium electroplating tanks:
    • large – reduced from 0.015 to 0.011 mg/dscm
    • small – reduced from 0.030 to 0.015 mg/dscm
  • Regarding decorative electroplating/chromium anodizing:
    • reduced from 0.010 to 0.007 mg/dscm

Immediately upon startup, new operations must meet the following limits:

  • Hard chromium electroplating:
    • 0.006 mg/dscm
  • Decorative Electroplating/Chromium Anodizing:
    • reduced from 0.010 to 0.006 mg/dscm

Testing Requirements for Chromium Emissions

If a facility completed its performance test for chromium emissions after January 25, 1995 and those results meet the lower limits, that facility is not required to re-test. However, if the test occurred prior to January 25, 1995, the facility is required to re-test.

Best Management Practices Requirements

BMPs must be added to your O&M Plan and put into practice no later than March 19, 2013.

For specific information concerning the amendments, please review Changes to 40 CFR 63, Subpart N [PDF].

For basic information on how to comply with the regulation, please review A Guidebook on How to Comply with the Chromium Electroplating and Anodizing National Emission Standards for Hazardous Air Pollutants [PDF], revised September 2004.


U.S. EPA Resources

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