Amending Minnesota rules governing land treatment practices for petroleum contaminated soil

Examining land for spreading contaminated petroleum compounds.

The Minnesota Pollution Control Agency (MPCA) plans to amend its 20-year-old rules governing land treatment of petroleum-contaminated soil. Land treatment involves spreading and incorporating the soils contaminated with petroleum compounds into the upper-most soil layer at a specific rate on pre-approved treatment sites. This treatment method allows natural biological, physical and chemical processes to break down the petroleum compounds over time into harmless constituents.


The MPCA plans to update the sampling protocols, methodologies, terminology and references found in existing rules to reflect accumulated program experience and current scientific data. The amendments are also intended to safely reduce unnecessary burdens to site owners, operators and regulated parties while assuring that the soils are treated under controlled conditions that do not endanger public health or the environment. They improve land treatment practices for small quantities of petroleum contaminated soil (under 10 cubic yards). They also increase the contamination standards allowed for land treating gasoline range organics/diesel range organics (GRO/DRO) from 10 ppm to 100 ppm, reduce post-application monitoring frequency from three to two times per year, and improve rule clarity.

These amendments mostly affect land treatment site owners and operators, parties with regulated soils, consultants and local communities. The MPCA believes that these amendments align well with related standards in other states, are necessary and non-controversial, and will generally be welcomed by most affected parties.


Binary Data Rule status: Land Treatment Practices for Petroleum Contaminated Soil (R-04079)

PDF icon Proposed permanent rules related to Petroleum-contaminated soil management (sw-rule3-01g)

The MPCA shared preliminary amendments in conjunction with its request for comments and GovDelivery notice in order to provide interested parties the opportunity to provide early input, prior to proposing a notice of intent to adopt rules in the State Register for general public comment.

Staff contacts

Program coordinator
Amy Jendro: 218-316-3857 or

Rulemaking coordinator
Nathan Cooley: 651-757-2290 or