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Indiana Department of Environmental Management

CTAP > Collision Repair/Auto Refinishing Shops Collision Repair/Auto Refinishing Shops

Along with applicable waste and water regulations, Collision Repair and Auto Refinishing Shops may be subject to federal and state environmental regulations concerning air emissions. 40 CFR 63, Subpart HHHHHH (6H or the U.S. EPA Autobody Rule) regulates emissions of Cadmium, Chromium, Lead, Manganese, Nickel, and Methylene Chloride resulting from overspray during surface coating operations.

The Indiana state rule, 326 IAC 8-10, regulates emissions of volatile organic compounds (VOCs). For example, evaporation of solvent used as an ingredient in a base coat formula would be regulated by 326 IAC 8-10. The CTAP Automobile Refinishing presentation [PDF] identifies both similarities and differences between the two (2) regulations (state and federal), as well as identifying key features of both.

A presentation [PDF] on the specific aspects of 6H and some elements of 326 IAC 8-10, was made on December 6, 2016 to air inspectors. Compliance and Technical Assistance Program (CTAP) staff are available to assist Collision Repair and Auto Refinishing Shops with general or specific questions and concerns as well as to help them understand and comply with applicable environmental regulations.

40 CFR 63.11169 To 63.11180 - Subpart HHHHHH

Area Source forms must be submitted to:

U.S. EPA Region 5
Air Enforcement & Compliance Assurance Branch AE-17J
77 West Jackson Boulevard
Chicago, IL 60604

Courtesy copies may be sent to:

Indiana Department of Environmental Management
Office of Air Quality, Compliance and Enforcement Branch
100 North Senate Avenue IGCN 1003
Indianapolis, IN 46204-2251

Owners or operators may petition U.S. EPA for exemption from this regulation if none of the coatings contain any of the target HAPs listed above. The petition must be submitted to and approved by U.S. EPA.

Information Required By U.S. EPA For A Petition For Exemption:

Other Resources

Regarding 40 CFR 63, Subpart HHHHHH (6H or the U.S. EPA Autobody Rule), Indiana collaborated with five (5) other states (Illinois, Michigan, Minnesota, Ohio and Wisconsin) to develop informational tools to help an autobody shop comply with 6H. The results of this collaboration can be found within the Environmental Results Program (ERP) for Autobody Refinishing Shops Project [PDF].

The State of Wisconsin hosts the website where informational tools can be found..

The following resources are available to provide further assistance:

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