Governing Law and Regulations
Maryland Department of the Environment (MDE) Air and Radiation Management Administration (ARMA) Air Toxics Office
See ADDRESSES & CONTACTS for addresses and telephone numbers.
See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. Maryland has developed a list of TAPs significantly more extensive than the federal HAP list, and has established a state program to permit and control the discharge of TAPs that requires sources to quantify emissions, install emissions controls, and evaluate the ambient impact of emissions. EPA has established National Emissions Standards for Hazardous Air Pollutants (NESHAP), including source-specific NESHAPs, known as maximum achievable control technology (MACT) standards, to regulate emissions of hazardous air pollutants (HAPs) into the atmosphere. Sources in Maryland must comply with any applicable NESHAPs, but any sources subject to such provisions are not required to comply with the state's requirements for emissions controls or ambient impact evaluations.
In addition, Maryland has promulgated regulations ...