Governing Law and Regulations
Massachusetts Department of Environmental Protection (DEP) Bureau of Waste Prevention Planning and Evaluation Division Air Program Planning Unit
U.S. Environmental Protection Agency (EPA) Region 1
See ADDRESSES & CONTACTS for addresses and telephone numbers.
See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. Massachusetts has no additional state-listed hazardous air pollutants (HAPs). Sources of HAPs in Massachusetts must comply with the applicable federal NESHAP rules, including the source-specific NESHAPs known as maximum achievable control technology (MACT) standards. However, EPA has granted DEP the authority to implement and enforce the state regulations in place of the MACT for perchloroethylene dry cleaners considered to be area sources. Major source perchloroethylene dry cleaners are still required to comply with the MACT. Refer to the national section HAZARDOUS AIR POLLUTANTS for a definition of an area source.
In addition, DEP has implemented numerous programs to limit the release of mercury into the environment.
• Administration and enforcement. DEP, in conjunction with EPA, administers and enforces the NESHAPs ...