Governing Law and Regulations
Montana Department of Environmental Quality (DEQ) Permitting and Compliance Division
Montana Department of Natural Resources
U.S. Environmental Protection Agency (EPA) Region 8
See ADDRESSES & CONTACTS for addresses and telephone numbers.
See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rule. Montana has established the Montana Environmental Policy Act (MEPA), which is similar to the National Environmental Policy Act (NEPA). MEPA applies to any major state action that will have a significant impact on the environment. Those undertaking such action must prepare either an environmental assessment (EA) of the project or a more in-depth environmental impact statement (EIS).
• Administration and enforcement. DEQ is responsible for administering and enforcing the MEPA rules. DNR retains some administration authority in limited cases, but the rules are the same regardless of the administering entity. EPA Region 8 administers and enforces NEPA in Montana.