Connecticut Hazardous Air Pollutants: What you need to know

Governing Law and Regulations

National Emissions Standards for Hazardous Air Pollutants (NESHAP): 40 CFR 61 and 40 CFR 63

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Connecticut hazardous air pollutants (HAPs) program:

Overview: 22a-174-29 Regulations of Connecticut State Agencies (RCSA)

Permitting requirements for HAPs: 22a-174-3a RCSA

Regulatory Agency

Connecticut Department of Energy and Environmental Protection (DEEP) Environmental Protection Bureau of Air Management

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. Sources of hazardous air pollutants (HAPs) in Connecticut must comply with the federal NESHAP standards, including source-specific NESHAPs, also known as maximum achievable control technology (MACT) standards. In addition, Connecticut has implemented a regulation for the control of state HAPs, in addition to the federal HAPs, which establishes emissions limits for over 850 substances on the basis of health standards. The regulation is designed to address localized impacts of state HAP emissions by limiting the concentration at the source's property line. All sources must comply with the requirements, not just selected source categories, as is the case with MACT standards.

Administration and enforcement. DEP's Bureau of Air Management implements and enforces the HAP rules and mercury management programs in Connecticut.

State Requirements



22a-174-29 RCSA

Connecticut has established hazard limiting values (HLVs) for over 850 chemicals. The HLV is the highest acceptable ambient concentration of a given pollutant over an 8-hour and 30-minute averaging time. The HLVs are listed in Tables 29-1 ...

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State Requirements

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Connecticut Hazardous Air Pollutants Resources

Hazardous Air Pollutants Products

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