Maine Title V regulations & environmental compliance analysis

Maine Title V: What you need to know

Governing Law and Regulations

Non-Title V operating permits: Code of Maine Rules (CMR) 06-096.115

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Title V operating permits: CMR 06-096.140 and 40 CFR 70 Appendix A

Regulatory Agency

Maine Department of Environmental Protection (DEP)

Bureau of Air Quality

Comparison: State vs. Federal
  • Rules. Maine is authorized by the U.S. Environmental Protection Agency (EPA) to administer its own air emissions permit program. DEP requires all new or modified sources of air pollution to obtain an air emissions license, with major sources required to obtain a Title V operating permit referred to in Maine as a Part 70 air emissions license. The Maine Title V program follows the federal provisions, including provisions establishing greenhouse gas permitting thresholds, and received full approval from the U.S. Environmental Protection Agency (EPA).
  • Administration and enforcement. DEP's Bureau of Air Quality administers and enforces the state's air emissions permitting rules.
  • State Requirements


    CMR 06-096.115

    Air Emissions License

    Maine does not differentiate between construction permits and operating permits. Non-Title V sources satisfy their permitting obligations by obtaining a single permit referred to as an air emissions license. Any source that has the potential to emit regulated pollutants below the established thresholds must obtain a minor source air emissions license from DEP before beginning actual construction, modification, or operation, unless the source is specifically exempted for licensing requirements. See the state section AIR EMISSIONS PERMITS for more information.

    Synthetic Minor Sources

    Sources wishing to accept restrictions on emissions and operations in order to avoid being subject to ...

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