Maryland Surface Impoundments regulations & environmental compliance analysis

Maryland Surface Impoundments: What you need to know

Governing Law and Regulations

Hazardous waste surface impoundment rules: Code of Maryland Regulations (COMAR)

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Waste analysis and trial tests: COMAR

Design standards: COMAR

Liner standards: COMAR 26.13 .05.11D(2) and COMAR 26.13 .05.11D(3)

Earthen dikes: COMAR and COMAR

Leak detection:

Contingency plan: COMAR

Notification of leaks: COMAR

Certification of repairs: COMAR

Post-closure leaks: COMAR

Inspections: COMAR

Federal organic air emissions rules: 40 CFR 264 Subparts BB and CC and 40 CFR 265 Subparts BB and CC (interim status)

Regulatory Agencies

Maryland Department of the Environment (MDE) Land Management Administration Hazardous Waste Program

U.S. Environmental Protection Agency (EPA) Region 3

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. Maryland's surface impoundment requirements include both the federal requirements and the state's more stringent rules. The state's rules cover:

—Analysis of wastes

—Design standards

—Earthen dikes


—Leak detection and response


—Facility permits and fees


Administration and enforcement. MDE's Land Management Administration administers and enforces the surface impoundment requirements in Maryland. The federal air emissions standards are enforced in Maryland by EPA's Region 3 office.

State Requirements



In addition to the federal treatment, storage, and disposal facility (TSDF) waste analysis ...

Read more about Surface Impoundments