Minnesota Surface Impoundments regulations & environmental compliance analysis

Minnesota Surface Impoundments: What you need to know

Governing Law and Regulations

Hazardous waste surface impoundment rules: Minnesota Rules (MR) 7045.0532 and MR 7045.0630 (interim status)

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Organic air emission rules: MR 7045.0540 and MR 7045.0551; MR 7045.0645 and MR 7045.0648 (interim status)

Location: MR 7045.0532, Subpart 2(A)

Hydrogeologic report: MR 7045.0532, Subpart 2(C)


Double liners: MR 7045.0532, Subpart 3(A)

Leak detection, collection, and removal (LDCR) systems: MR 7045.0532, Subpart 3(C)

Liner and LDCR system certification: MR 7045.0532, Subpart 5(D)

Liner inspections: {LNK!Type=03!RegscanDoc=db=mnenvr&doc=008100WO.htm#Subp. 4.!}MR 7045.0532, Subparts 4{/LNK!Type=03!} and 5

Operating standards: MR 7045.0532, Subpart 3

Regulatory Agencies

Minnesota Pollution Control Agency (MPCA)

U.S. Environmental Protection Agency (EPA) Region 5

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. Minnesota's surface impoundment rules include the federal requirements and additional state regulations covering:


—Hydrogeologic reports

—Double liners

—Operating standards

—Facility permits and fees

—Closure and post-closure

Administration and enforcement. MPCA administers and enforces the surface impoundment requirements in Minnesota. EPA's Region 5 office enforces the federal air emissions standards found at 40 CFR 264, Subpart CC and 40 CFR 265, Subpart CC.

State Requirements


MR 7045.0532, Subpart 2(A)

Surface impoundments and landfills may not be built in surficial (surface) karst areas. ("Karsts" are areas characterized by irregular limestone, underground streams, and caverns. The most common example ...

Read more about Surface Impoundments