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Environmental Requirements

Each MDOT transportation business unit maintains an updated list of all legal and other requirements to which they are subject. The majority of legal requirements are found in 40 Code of Federal Regulations (CFR) and Code of Maryland Regulations (COMAR) Title 26. Local codes only apply to state facilities where delegated by state and federal regulations.

Other regulatory programs, such as the National Environmental Policy Act (NEPA), are applicable to the planning, design and construction aspects of Department activities. Click the link for more information.

Regulatory Updates

Air Quality

Climate Change

Cultural Resources


Hazardous Waste

Natural Resources





Solid Waste & Recycling

Storage Tanks


Toxics (Asbestos, Lead, PCBs)

Wastewater/Water Quality