# List of Superfund sites in Utah

This is a list of Superfund sites in Utah 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 1, 2010, there were sixteen Superfund sites on the National Priorities List in Utah. Three more sites have been proposed for entry on the list and four others have been cleaned up and removed from it.

## Superfund sites

    Proposed for addition to National Priorities List
    Deleted from National Priorities List
| CERCLIS ID | Name | County | Reason | Proposed | Listed | Construction completed | Partially deleted | Deleted |
| UT0001119296 | Bountiful/Woods Cross PCE Plume | Davis | Groundwater contamination by VOCs, primarily PCE and TCE, from petroleum distribution and dry cleaning companies. | 12/01/2000 | 09/13/2001 | – | – | – |
| UTD988075719 | Davenport and Flagstaff Smelters | Salt Lake | Soil contamination by lead and arsenic from smelting. | 12/01/2000 | 04/30/2003 | – | 10/19/2004 | – |
| UT0002240158 | Eureka Mills | Juab | Soil contamination by lead and arsenic from mining and milling. | 06/14/2001 | 09/05/2002 | – | – | – |
| UTN000802654 | Five Points PCE Plume | Davis | Groundwater contamination by PCE from an unknown source. | 03/07/2007 | 09/19/2007 | – | – | – |
| UT0571724350 | Hill Air Force Base | Davis and Weber | Air, soil and groundwater contamination by VOCs, chromium, cadmium, manganese and arsenic from Air Force maintenance activities. | 10/15/1984 | 07/22/1987 | – | – | – |
| UT0001277359 | Intermountain Waste Oil Refinery | Davis | Stored waste and solvent contamination of soil and groundwater. | 10/12/1999 | 05/11/2000 | 10/01/2004 | – | – |
| UTD093120921 | International Smelting and Refining | Tooele | Arsenic, cadmium, copper, lead, mercury and zinc contamination of soil. | 04/23/1999 | 07/27/2000 | 09/27/2007 | – | – |
| UT0002391472 | Jacobs Smelter | Tooele | Lead and arsenic contamination of soil. | 07/22/1999 | 02/04/2000 | – | 09/04/2001 11/29/2005 | – |
| UTD070926811 | Kennecott (North Zone) | Salt Lake | Soil, groundwater, surface water and sludge contaminated by lead, arsenic and selenium from ore smelting and processing. | 01/18/1994 | Deferred | – | – | – |
| UTD081834277 | Midvale Slag | Salt Lake | Soil, air, ground water, surface water, sediment and solid waste contaminated by lead, arsenic, chromium and cadmium from smelting. | 06/10/1986 | 02/11/1991 | – | – | – |
| UT3890090035 | Monticello Mill Tailings (DOE) | San Juan | Soil, groundwater, surface water, sediment and solid waste contaminated by uranium, thorium-230, radium-226, radon-222 and heavy metals including arsenic, selenium, vanadium, molybdenum and manganese from uranium milling operations associated with the Manhattan Project. | 07/14/1989 | 11/21/1989 | 09/29/2004 | 10/14/2003 | – |
| UTD980667208 | Monticello Radioactive Contaminated Properties | San Juan | Debris and soil and air contamination by radioactive dust and tailings from the Minticello Mill, and radon from radioactive decay. | 10/15/1989 | 06/10/1986 | 09/02/1999 | – | 02/28/2000 |
| UTD980951420 | Murray Smelter | Salt Lake | Groundwater, surface water, soil, sediment and debris contaminated by lead and arsenic from former ASARCO smelter. | 01/18/1994 | – | – | – | – |
| UT9210020922 | Ogden Defense Depot (DLA) | Weber | Debris; groundwater contamination contaminated by VOCs; soil contamination by semi-volatile compounds, metals including arsenic, lead, zinc, cadmium, mercury and barium and pesticides. | 10/15/1984 | 07/22/1987 | 09/28/1995 | – | – |
| UTD093119196 | Petrochem Recycling Corp./Ekotek Plant | Salt Lake | Liquid waste, debris and residuals; groundwater, surface water and soil contamination by oil refining and recycling wastes, PCBs and acidic sludge. An owner and an operator of the plant were subsequently convicted of environmental crimes. | 07/29/1991 | 10/14/1992 | 04/12/2000 | – | 06/30/2003 |
| UTD980718670 | Portland Cement | Salt Lake | Debris and soil, air groundwater contamination from arsenic, lead, chromium, cadmium and molybdenum contained in cement kiln dust dumped on site. | 10/15/1984 | 06/10/1986 | 08/18/1998 | – | – |
| UTD980952840 | Richardson Flat Tailings | Summit | Groundwater, surface water and air contamination by arsenic, cadmium, copper, lead, mercury, silver and zinc from mining and milling. | 02/07/1992 | – | – | – | – |
| UTD980635452 | Rose Park Sludge Pit | Salt Lake | Solid waste and soil contamination from dumped acidic petroleum refinery waste sludge containing PAHs and sulfur dioxide, with potential for groundwater contamination. | 12/30/1982 | 09/18/1983 | 06/17/1992 | – | 06/03/2003 |
| UTD980951388 | Sharon Steel Corporation (Midvale Tailings) | Salt Lake | Liquid waste and air, surface water, groundwater and soil contamination by lead, arsenic, iron, manganese, zinc and other heavy metals. Local residents had been using tailings from the site for gardening and children's sandboxes. | 10/15/1984 | 08/30/1994 | 05/12/1999 | – | 09/24/2004 |
| UT3213820894 | Tooele Army Depot (North Area) | Tooele | Solid waste, debris and groundwater and soil contamination by explosives, lead, cadmium, barium, pesticides, hydrocarbons, solvents, waste oils and PCBs from maintenance, munitions disposal and other industrial activities. | 10/15/1984 | 08/30/1990 | – | – | – |
| UTN000802704 | U.S. Magnesium | Tooele | Largely uncontrolled release of heavy metals, acidic waste, PCBs, dioxins, furans, HCB and PAHs into the air, soil, surface water, and groundwater. | 09/03/2008 | 11/04/2009 | – | – | – |
| UTD980667240 | Utah Power & Light/American Barrel Co. | Salt Lake | Soil and groundwater contamination by PAHs, benzene, styrene, toluene, xylene, lead, pesticides and cyanides from wood treatment, coal gasification and barrel storage. | 05/05/1989 | 10/04/1989 | 09/30/1996 | – | – |
| UTD000716399 | Wasatch Chemical Co. | Salt Lake | Liquid and solid waste; air, surface water, groundwater and soil contamination by herbicides, pesticides and VOCs including xylene and toluene. | 01/22/1987 | 02/11/1991 | 09/30/1997 | – | – |