# List of Superfund sites in Minnesota

This is a list of Superfund sites in Minnesota designated under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) environmental law. The CERCLA federal law of 1980 authorized the United States Environmental Protection Agency (EPA) to create a list of polluted locations requiring a long-term response to clean up hazardous material contaminations. These locations are known as Superfund sites, and are placed on the National Priorities List (NPL).
The NPL guides the EPA in "determining which sites warrant further investigation" for environmental remediation. As of May 4, 2010, there were 25 Superfund sites on the National Priorities List in Minnesota. 21 others have been cleaned up and removed from the list; none are currently proposed for addition.

## Superfund sites

    Deleted from National Priorities List
| CERCLIS ID | Name | County | Reason | Proposed | Listed | Construction completed | Partially deleted | Deleted |
| MND980904023 | Adrian Municipal Well Field | Nobles | Groundwater pollution by VOCs including benzene and toluene. Contaminated municipal drinking wells have been closed and underground storage tanks near the site have been removed. | 10/15/1984 | 06/10/1986 | 07/20/1992 | – | 12/30/1992 |
| MND980898068 | Agate Lake Scrapyard | Cass | Groundwater contamination by VOCs including TCE, benzene, toluene and methylene chloride and soil contamination by PCBs, dioxins, furans and lead. | 10/15/1984 | 06/10/1986 | 03/31/1995 | – | 08/01/1997 |
| MND980823975 | Arrowhead Refinery Company | St. Louis | Highly acidic sludge, soil and sediment were contaminated by VOCs, PAHs, petroleum hydrocarbons and lead. | 09/08/1983 | 09/21/1984 | 12/19/1996 | – | – |
| MND982425209 | Baytown Township Ground Water Plume | Washington | TCE contamination of a groundwater aquifer used for local drinking water supplies, from a metal-working facility and possibly from Lake Elmo Airport. | 10/14/1992 | 12/16/1994 | – | – | – |
| MND053417515 | Boise Cascade/Onan Corp./Medtronic, Inc. | Anoka | Soil, sediment and groundwater contamination by creosote, phenols and other organic compounds, from former wood treatment operations. The groundwater is used for local drinking water supply. | 09/08/1983 | 09/21/1984 | 09/30/1992 | – | 02/15/1995 |
| MND000686196 | Burlington Northern (Brainerd/Baxter) | Crow Wing | Soil and groundwater contamination and risk of surface water contamination by creosote, PAHs, oil and grease, salts and phenols from former wood treatment operations. | 12/30/1982 | 09/08/1983 | 09/18/1995 | – | – |
| MND981191570 | Dakhue Sanitary Landfill | Dakota | Groundwater contamination by VOCs, chloroform and heavy metals, including cadmium and lead. | 10/26/1989 | 08/30/1990 | 06/30/1994 | – | 07/24/1995 |
| MND981088180 | East Bethel Demolition Landfill | Anoka | Soil contamination by VOCs, including toluene and vinyl chloride. An aquifer, which provides drinking water to some local residents, was contaminated by VOCs, barium, cadmium, mercury and lead, though most residents use a deeper aquifer. Local wetland and surface water may have been at risk from contamination. | 09/18/1985 | 06/10/1986 | 06/30/2000 | – | 05/07/1996 |
| MND006481543 | FMC Corporation (Fridley Plant) | Anoka | Soil was contaminated by TCE. Groundwater is contaminated by VOCs including TCE, which probably contributed to the detection of VOCs in the Minneapolis drinking water supply. | 12/30/1982 | 09/08/1983 | 09/08/1992 | – | – |
| MND038384004 | Freeway Sanitary Landfill | Dakota | Groundwater contamination by VOCs (including benzene, ethyl benzene and xylene) and heavy metals (including arsenic, chromium, copper, lead and manganese). Risk of transfer of contaminants to Burnsville municipal water supply and the Minnesota River. | 09/18/1985 | 06/10/1986 | – | – | – |
| MND985701309 | Fridley Commons Park Well Field | Anoka | VOCs, including TCE have been discovered in some municipal wells, but at levels below Federal drinking water limits. The situation is being monitored but no remedial action is currently felt necessary. | 09/29/1998 | 01/19/1999 | 10/25/2005 | – | – |
| MND051441731 | General Mills/Henkel Corporation | Hennepin | The site is a former research laboratory. Groundwater is contaminated by VOCs, including TCE, benzene, chloroform, toluene and xylenes and soil was contaminated by VOCs from solvent disposal. | 09/08/1983 | 09/21/1984 | 06/05/1992 | – | – |
| MND044799856 | Joslyn Manufacturing & Supply Company | Hennepin | Soil and groundwater contamination by PCP, PAHs, phenol and heavy metals from former wood treatment operations. | 09/08/1983 | 09/21/1984 | 12/21/1995 | 04/22/2002 | – |
| MND000686071 | Koch Refining Company/N-Ren Corporation | Dakota | The site is an active oil refinery. Groundwater is contaminated by VOCs, PAHs phenols and lead; soil is contaminated by PAHs and VOCs including benzene, toluene and xylenes. | 10/15/1984 | 06/10/1986 | 07/16/2008 | – | 06/15/1995 |
| MND000819359 | Koppers Coke | Ramsey | Soil and groundwater contamination by VOCs, semi-VOCs, PAHs, metals and cyanides from a former coking plant. | 12/30/1982 | 09/08/1983 | 07/20/1998 | – | – |
| MND980904049 | Kummer Sanitary Landfill | Beltrami | The site is a closed landfill with a history of operational violations. Site groundwater contains by VOCs, including vinyl chloride, xylenes, carbon tetrachloride and naphthalene and is at risk of contaminating nearby Lake Bemidji and wetlands. | 10/15/1984 | 06/10/1986 | 06/22/2000 | – | 04/26/1996 |
| MND059680165 | Kurt Manufacturing Company | Anoka | The site is an active electronic component manufacturing facility. Shallow groundwater and soil are contaminated by PCE, TCA, TCE and DCE. | 10/15/1984 | 06/10/1986 | 09/20/1995 | – | – |
| MND981090483 | LaGrand Sanitary Landfill | Douglas | Groundwater contamination by volatile hydrocarbons. | 06/10/1986 | 07/22/1987 | 08/07/1995 | – | 10/23/1997 |
| MND980792469 | Lehillier/Mankato Site | Blue Earth | Groundwater contamination by VOCs, including TCE from uncontrolled dumping. Domestic wells were contaminated and a municipal well was close to the plume, though no contamination was detected there. | 12/30/1982 | 09/08/1983 | 04/08/1992 | – | – |
| MND980904072 | Long Prairie Ground Water Contamination | Todd | A former dry cleaning operation contaminated soil and groundwater with PCE, TCE, DCE and vinyl chloride. Private drinking water wells were contaminated and municipal wells were closed from 1983 to 1985. | 10/15/1984 | 06/10/1986 | 09/19/1997 | – | – |
| MND006192694 | MacGillis & Gibbs/Bell Lumber & Pole Company | Ramsey | Groundwater, sediments, and soil are contaminated with PAHs, PCP and heavy metals such as copper, chromium and arsenic from wood treatment operations. Municipal wells are unaffected but private wells have been contaminated and there is a risk of contamination to local wetlands. | 09/08/1983 | 09/21/1984 | 09/25/2002 | – | – |
| MND980792287 | Morris Arsenic Dump | Stevens | Stevens County reportedly buried around 1,500 lb (680 kg) of surplus arsenic-containing pesticide in a disused gravel pit in the 1940s. Arsenic was present in soil, groundwater and private drinking water well samples but at levels within the naturally occurring range in Minnesota, which do not pose a health hazard. No cleanup action was taken. | 09/08/1983 | 09/21/1984 | 08/07/1985 | – | 03/07/1986 |
| MN3170022914 | Naval Industrial Reserve Ordnance Plant | Anoka | Groundwater and soil are contaminated by solvents, including TCE and methylene dichloride and PAHs were found in surface soil. Groundwater flows into the Mississippi River, upstream of the Minneapolis drinking water treatment plant uptake. | 07/14/1989 | 11/21/1989 | 09/23/2003 | – | – |
| MN7213820908 | New Brighton/Arden Hills/Twin Cities Army Ammunition Plant (US Army) | Ramsey | Groundwater, soil, sediments, and surface water contaminated with volatile organic compounds (VOCs), semi-VOCs, metals, PCBs, cyanide, pesticides, and explosives. | 12/30/1982 | 09/08/1983 | – | – | – |
| MND097891634 | NL Industries/Taracorp/Golden Auto | Hennepin | Soil was contaminated by lead from former smelting operations. | 12/30/1982 | 09/08/1983 | 09/27/1995 | – | 05/21/1998 |
| MND006154017 | Nutting Truck & Caster Company | Rice | Groundwater contamination by TCE and DCE. Municipal wells were also contaminated by TCE but there is no definitive link to the site. | 09/08/1983 | 09/21/1984 | 09/24/1992 | – | – |
| MND980609515 | Oakdale Dump | Washington | Hazardous waste, including VOCs such as isopropyl ether and benzene were disposed of at three sites; one has low-level heavy metal contamination. Residential drinking water wells were contaminated. | 12/30/1982 | 09/08/1983 | 09/07/1995 | – | – |
| MND980904056 | Oak Grove Sanitary Landfill | Anoka | Groundwater, leachate and sediments contaminated by VOCs, phenols and heavy metals. Groundwater also contaminated by phthalates. | 10/15/1984 | 06/10/1986 | 08/18/1993 | – | 10/17/1996 |
| MND000874354 | Olmsted County Sanitary Landfill | Olmsted | The first cell of the landfill was unlined and the second poorly lined, resulting in groundwater contamination by VOCs and heavy metals, including chromium, cadmium and lead and extensive leachate seeps. Waste has been capped and a leachate collection system installed. | 10/15/1984 | 06/10/1986 | 06/21/1994 | – | 02/15/1995 |
| MND980609572 | Perham Arsenic Site | Otter Tail | Groundwater and soil are contaminated by arsenic pesticide dumped in a shallow pit in 1947. The site was redeveloped for commercial use and eleven people were poisoned by a well installed in 1972. The well and dump have been capped and groundwater treatment is ongoing. | 09/08/1983 | 09/21/1984 | – | 09/29/1998 | – |
| MND000245795 | Pine Bend Sanitary Landfill | Dakota | Groundwater VOC contamination from leachate. | 10/15/1984 | 06/10/1986 | 09/28/1995 | – | 06/23/1998 |
| MND980609804 | Reilly Tar & Chem (St. Louis Park Plant) | Hennepin | Soil and groundwater are contaminated by PAHs from former coal tar distillation and wood treatment operations. Contaminated groundwater aquifer is used by around 43,000 people and seven municipal wells have been closed. | 12/30/1982 | 09/08/1983 | 06/30/1997 | – | – |
| MND980904064 | Ritari Post & Pole | Wadena | Soil and groundwater contamination by PCP and dioxins and groundwater contamination by phenols from former wood treatment operations. | 01/22/1987 | 07/22/1987 | 09/26/2001 | – | – |
| MND981002256 | St. Augusta Sanitary Landfill/Engen Dump | Stearns | Groundwater is contaminated by heavy metals, including arsenic, barium and lead, VOCs, atrazine and phthalates. | 09/18/1985 | 07/22/1987 | 09/26/2000 | – | 11/14/1996 |
| MND039045430 | St. Louis River Site | St. Louis | Past industrial and disposal practices have contaminated river sediments with tar, PAHs, VOCs, cyanide, naphthalene and heavy metals including mercury. Operations at the US Steel Duluth Works site caused soil, sediment, shallow groundwater and surface water contamination by semi-VOCs, PAHs and metals. | 09/08/1983 | 09/21/1984 | – | – | – |
| MND057597940 | St. Regis Paper Company | Cass | Groundwater, soil and sediment contamination by PAHs, metals, PCP, dioxins and furans from former wood treatment operations. | 09/08/1983 | 09/21/1984 | – | – | – |
| MND980609614 | South Andover Site | Anoka | Waste disposal and salvage operations contaminated soil and groundwater with vinyl chloride and other VOCs. The 2021 FYR concluded that the remedy is currently functioning as intended and continues to be protective of human health and environment in the short term. However, in February of 2022, the Minnesota Pollution Control Agency (MPCA) notified EPA of private wells north of the South Andover site impacted with 1,4-dioxane and per- and polyfluoroalkyl substances (PFAS). |
| MNN000509136 | South Minneapolis Residential Soil Contamination | Hennepin | Arsenic contamination of soil over 1,480 acres (6.0 km$^2$), including 3,500 residential properties, along with other properties. Contamination is thought to have come from a former pesticide manufacturing plant. | 09/27/2006 | 09/19/2007 | 09/27/2011 | – | – |
| MN8570024275 | Twin Cities Air Force Reserve Base (Small Arms Range Landfill) | Hennepin | Arsenic, beryllium, cadmium, lead, nickel, selenium and vanadium contamination of groundwater. | 01/22/1987 | 07/22/1987 | 09/24/1992 | – | 12/16/1996 |
| MND022949192 | Union Scrap Iron & Metal Company | Hennepin | Battery recycling at two sites resulted in sludges and soil contaminated by PCBs and heavy metals including lead, arsenic, cadmium, nickel and copper. Airborne lead levels were high and there was potential for groundwater and surface water contamination. No significant contamination remains after removal actions. | 09/08/1983 | 09/21/1984 | 09/18/1990 | – | 09/10/1991 |
| MND980613780 | University of Minnesota (Rosemount Research Center) | Dakota | Soil contamination by lead, copper and PCBs from tenants and VOCs, primarily chloroform, from university laboratory waste disposal. | 10/15/1984 | 06/10/1986 | 06/29/1994 | – | 02/06/2001 |
| MND981002249 | Waite Park Wells | Stearns | Municipal wells are contaminated by TCE and PCE from two industrial sites. There is a light non-aqueous phase liquid layer of petroleum products above the water table, elevated levels of PCBs, lead and other heavy metals in the soil, and PCBs and VOCs in the groundwater. | 09/18/1985 | 06/10/1986 | 09/21/1999 | – | – |
| MND980704738 | Washington County Landfill | Washington | VOC contamination of soil and groundwater, including private wells. Potentially explosive methane concentrations. | 09/08/1983 | 09/21/1984 | 09/30/1992 | – | 05/16/1996 |
| MND980609119 | Waste Disposal Engineering | Anoka | Groundwater, soil gas and surface water contamination by VOCs. | 12/30/1982 | 09/08/1983 | 09/27/1995 | – | 06/05/1996 |
| MND006252233 | Whittaker Corporation | Hennepin | Groundwater and soil contamination by heavy metals, including cadmium and lead and VOCs. | 09/08/1983 | 09/21/1984 | 04/07/1992 | – | 02/11/1999 |
| MND980034516 | Windom Dump | Cottonwood | Groundwater contamination by VOCs and heavy metals including arsenic, cadmium and chromium. Soil contamination by VOCs. There was a risk of contamination of private and municipal drinking wells. | 10/15/1984 | 06/10/1986 | 12/24/1991 | – | 10/06/2000 |