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St. Paul Brass manufactures brass, bronze, and aluminum castings in the Frogtown neighborhood of Saint Paul, an environmental justice area.
To ensure that every person in Minnesota has healthy air to breathe, the MPCA studies, monitors, and regulates air pollutants, primarily in three categories: criteria pollutants, air toxics, and greenhouse gases.
Hot mix asphalt plants in Minnesota must follow federal and state air standards.
The MPCA enforces federal and state requirements for air quality permitting.
The MPCA is granting $4.4m from VW settlement funds to replace dirty diesel trucks with cleaner drivetrains. Similar previous grants show how the program works.
Environmental information and permits that affect businesses using stationary engines or generators.
Training resources for feedlot officers in Minnesota.
Environmental information and permits that affect metal fabrication and finishing businesses.
In Minnesota, about 18,000 regulated underground storage tanks (UST) are in use. State rules specify requirements for underground storage tanks (UST) that store petroleum or hazardous substances, and any piping or other structures that are part of the tank systems.
The MPCA closed 118 enforcement cases for water quality, air quality, waste, stormwater, and wastewater violations in the second half of 2023.
Many residents have questions and concerns about loud noises or unpleasant odors that may be associated with industries or businesses in their community.
Smith Foundry has ceased operations at its East Phillips facility after an investigation and settlement with the U.S. EPA that the MPCA supported.
From January through March 2025, MPCA air monitoring data showed elevated lead levels that exceeded national ambient air quality standards near the facility. An MPCA inspection of Gopher Resource in spring 2025 confirmed that the source of the elevated lead levels was addressed.
Resources for the dry cleaning industry
Any facility that emits air pollutants above certain levels is required to have an air quality permit.
State and community leaders visited Faribault and Northfield to observe Minnesota climate resiliency efforts in action.
Environmental information and permits that affect wood-finishing industries.
Sugar beet processing facility emitted higher levels of hydrogen sulfide and particulates than its permit allows between 2020 and 2022. The Polk-Norman-Mahnomen Community Health Board will receive 40% of the $350,000 penalty according to a new Minnesota statute enacted in 2023.
Industrial Stormwater Steps to Compliance - Step 2: Consider certifying for No Exposure
MPCA is planning new rules governing air quality, establishing new rules for odor management plan requirements.