Local sites and projects

Restoration activity along the waterfront of Duluth, Minnesota.

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Nashwauk | Mesabi Metallics

Mesabi Metallics is currently constructing a new taconite mine and taconite pellet production facility on the site of the former Butler Taconite Mining Company facility near Nashwauk.

Silver Bay | Northshore Mining

Northshore Mining Company has applied for updated wastewater and air quality permits for its Silver Bay taconite processing plant and Mile Post 7 tailings basin.

St. Paul | Ford Motor Company - Area C

“Area C” is the name given to Ford Motor Company’s former industrial waste dump on the floodplain of the Mississippi River, at the base of the bluff below the former Twin Cities Assembly Plant in Saint Paul.

Babbitt | Northshore Mining — Peter Mitchell Mine

Northshore Mining operates the Peter Mitchell Mine, a taconite ore mining operation, in Babbitt. It sends the ore that it mines there via rail to a processing plant in Silver Bay, which is a separate facility with its own individual air permit.

Scott County | Dem-Con anaerobic digestion facility

A new facility that will process organic materials through anaerobic digesters in Shakopee.

Cottage Grove | 3M Chemical Operations

3M will use an advanced wastewater treatment system to remove per- and polyfluoroalkyl substances (PFAS) from its Chemical Operations facility in Cottage Grove.

Keewatin | U.S. Steel Keetac

U.S. Steel Corp. operates a taconite mine and processing plant known as Keetac north of Keewatin, where it produces taconite pellets for use at iron and steel mills.

Grand Rapids | MagIron

MagIron LLC proposes to restart a mining and processing facility near Grand Rapids, which will require new air and industrial wastewater permits from the MPCA.

Anoka | Federal Ammunition

The MPCA and the U.S. Environmental Protection Agency (EPA) are working together on an enforcement investigation to address elevated lead emissions at Federal Ammunition in Anoka.

Saint Paul | Northern Iron

Northern Iron operates an iron foundry in an area of concern for environmental justice in Saint Paul's Payne-Phalen neighborhood.

Dakota County | Pine Bend Landfill

The operator of Pine Bend Landfill proposes to increase the height of the landfill by 85 feet, expanding its capacity by nearly 8.2 million cubic yards and extending its operational life through 2045.

Saint Paul | Pig's Eye Dump Task Force

Pig’s Eye Dump in Saint Paul has been slated for cleanup and restoration.

Minneapolis | Smith Foundry

Smith Foundry has ceased operations at its East Phillips facility after an investigation and settlement with the U.S. EPA that the MPCA supported.

Statewide | Air quality sensors

Understanding small-scale differences in air pollution is important for minimizing exposure to harmful air pollutants, particularly for vulnerable communities.

Andover | Eastbrook Terrace area groundwater contamination

The chemical 1,4-dioxane, a likely carcinogen, was detected in a private residential well in the Eastbrook Terrace area in Andover.

Minneapolis | Former Precision Plating Superfund site

The Precision Plating site in north Minneapolis was formerly home to a metal plating facility where solvents and metals were released into the soil and groundwater.

Enbridge Line 3 pipeline replacement project

Enbridge Energy is continuing restoration work around its new Line 3 crude oil pipeline across Minnesota. The new line replaces an aging Line 3 and began operating in October 2021, after Enbridge completed the project’s construction phase.

Mountain Iron | Minntac Taconite

The Minntac Taconite facility near Mountain Iron holds MPCA water and air permits. It is pursuing a renewed water permit for operation of its tailings basin.

Minneapolis | Southeast Hennepin area groundwater and soil contamination

Trichloroethylene and perchloroethylene have contaminated groundwater and caused vapor intrusion issues at this site.

St. Paul | Metropolitan Council Environmental Services incinerator expansion

The Metropolitan Council proposes adding a fourth wastewater incinerator which requires an amendment to the facility’s current air emissions permit.

Minneapolis | General Mills/Henkel Corp. contamination

A legacy of trichloroethylene disposal at the General Mills/Henkel Corp. Superfund Site at 2010 East Hennepin created an area of groundwater contamination that has led to vapors traveling upward through the soil, where it can enter houses and buildings.

Local sites and projects

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Nashwauk | Mesabi Metallics

Silver Bay | Northshore Mining

St. Paul | Ford Motor Company - Area C

Babbitt | Northshore Mining — Peter Mitchell Mine

Scott County | Dem-Con anaerobic digestion facility

Cottage Grove | 3M Chemical Operations

Keewatin | U.S. Steel Keetac

Grand Rapids | MagIron

Anoka | Federal Ammunition

Saint Paul | Northern Iron

Dakota County | Pine Bend Landfill

Saint Paul | Pig's Eye Dump Task Force

Minneapolis | Smith Foundry

Statewide | Air quality sensors

Andover | Eastbrook Terrace area groundwater contamination

Minneapolis | Former Precision Plating Superfund site

Enbridge Line 3 pipeline replacement project

Mountain Iron | Minntac Taconite

Minneapolis | Southeast Hennepin area groundwater and soil contamination

St. Paul | Metropolitan Council Environmental Services incinerator expansion

Minneapolis | General Mills/Henkel Corp. contamination

Andover | Red Oaks neighborhood groundwater contamination

St. Louis Park | Highway 100 and County Road 3 area groundwater contamination

St. Paul | Morning Star Church area soil contamination

Burnsville | Burnsville Sanitary Landfill expansion