Montana Environment - General regulations & environmental compliance analysis

Montana Environment - General: What you need to know

Overview of Montana's Environmental Rules


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In Montana, the counterpart to the U.S. Environmental Protection Agency (EPA) is the Montana Department of Environmental Quality (DEQ). DEQ is responsible for protecting Montana's land, water, and air from pollution. EPA has delegated authority to Montana to administer regulatory programs for air emissions, wastewater and stormwater discharges, hazardous waste management, solid waste management, and storage tanks. Montana's regulations generally follow, or simply adopt, federal standards, except that some hazardous waste management and storage tank rules are stricter than federal standards. The U.S. Department of Labor's Occupational Safety and Health Administration (OSHA) administers safety and health rules in private sector workplaces, and the state governs public sector workplaces.


Montana's air program is shaped by its state implementation plan (SIP), which sets forth basic strategies for implementation, maintenance, and enforcement of the National Ambient Air Quality Standards (NAAQS). As mandated by the federal Clean Air Act (CAA), each state must adopt and submit a SIP to EPA for approval. Montana's SIP was officially submitted to EPA in March 1972 and is frequently amended to comply with the 1990 CAA amendments. The SIP focuses on permitting, nonattainment areas, hazardous air pollutants, new source performance standards, and numerous other air-related requirements.

The Air Resources Management Bureau of DEQ's Permitting and Compliance Division is responsible for administering and enforcing Montana's air pollution rules.


The Montana Water Quality Act is designed to protect, maintain, and improve the quality of ...

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