Superfund Sites in Reuse in Missouri

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12TH AVENUE SOLVENTS

The 12th Avenue Solvents site is in Ava, Missouri. It includes four properties: the former Emerson Electric Company facility, the former Rawlings facility, part of the Douglas County Health Department and part of the Sentinel Wood Treating Superfund site. Since 1968, companies have used the area for manufacturing activities. These activities contaminated site soil and groundwater. From 1994 to 2000, Emerson Electric Company, the potentially responsible party, led a series of time-critical removal actions on-site. Actions included installing and sampling three groundwater monitoring wells under the southwest part of the facility. They also included putting in a dual-purpose groundwater and soil vapor extraction well and a dual vapor extraction system and removing and treating about 57 tons of soil. In 2001, EPA, the Missouri Department of Natural Resources and the PRP signed an agreement. The PRP agreed to continue with cleanup activities. EPA’s long-term cleanup plan includes groundwater treatment and land use restrictions. Due to perceived risks, office space in only one of the warehouse buildings was in use. The PRP did a vapor intrusion assessment. It confirmed indoor air safety. In 2021, a beehive manufacturing company purchased the warehouse. The company is upgrading the warehouse and putting in a new loading dock. Other uses on-site include a police station, a heating, ventilation, air conditioning and refrigeration manufacturing business, and other commercial businesses.
Last updated October 2025

As of December 2024, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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ANNAPOLIS LEAD MINE

The 200-acre Annapolis Lead Mine Superfund site is in Iron County, Missouri. It includes historic mining areas, Sutton Branch Creek and its floodplain, and the town of Annapolis. Lead mining activities from 1919 to 1940 generated over one million tons of mining wastes, contaminating soils and sediments with heavy metals, primarily lead. Massive piles of mining waste left on site eroded over time, resulting in lead contamination of soils, sediments and nearby bodies of water. EPA added the site to the National Priorities List in 2004. EPA worked with the Missouri Department of Natural Resources and the U.S. Fish and Wildlife Service to develop a cleanup plan. It addressed contaminated sediments in the Sutton Branch Creek floodplain and contaminated soils in nearby residential yards. Workers excavated and combined contaminated materials and capped them. EPA and the MoDNR also planted over 1,000 trees, revegetating parts of the site. Cleanup activities also stabilized parts of the creek to prevent heavy metals from washing into the river along with more stabilization of the historical mining area. In the town of Annapolis, EPA and the MoDNR tested soils and removed contamination. Studies focused on areas attractive to children, such as residential yards, school yards and church yards. Remedy construction finished in 2007. EPA deleted the site from the NPL in 2020. EPA and MoDNR continue to inspect the site and MoDNR conducts regular maintenance activities to make sure the remedy remains protective of human health and the environment. Hay production takes place on a small part of the Sutton Branch Creek floodplain. 
Last updated October 2025

As of December 2024, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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ARMOUR ROAD

The Armour Road Superfund site is in North Kansas City, Missouri. From the 1920s to 1986, several different parties ran an herbicide mixing and packaging facility on the 1.8-acre site property. A 1989 environmental assessment found high levels of arsenic and other herbicide-related contaminants in soil and groundwater. To protect public health and the environment, EPA conducted a time-critical removal action. EPA covered the site property with geofabric and crushed rock and put a perimeter fence around the property in May 1996. EPA added the site to the National Priorities List in 1999. Under EPA oversight, the site’s responsible parties continued cleanup activities. In 2004, a removal action was conducted to decontaminate, demolish and dispose of the former herbicide mixing facility and foundation and to dispose of construction debris in a permitted landfill. North Kansas City acquired the property at auction that same year. Two additional removal actions were completed in 2006 and 2017 to excavate, treat and dispose of contaminated soil. Today, the former facility infrastructure has been removed, soil cleanup is complete and all parts of the property are available for redevelopment. EPA continues to work with the responsible parties on the final groundwater remedy.    Cleanup enabled the reuse of the site property and opened the door to redevelopment opportunities in the area. In 2016, Northern Kansas City released its Northern Kansas City Master Plan. It included the site as part of a large redevelopment project called the One North Redevelopment Area. In 2019, EPA Region 7 presented its Leading Environmentalism and Forwarding Sustainability Award to Northern Kansas City and U.S. Borax, one of the site’s responsible parties. EPA Region 7 also recognized the Missouri Department of Natural Resources (MoDNR) for their partnership at the site. To date, redevelopment at and around the site includes a medical center with a solar array on its covered parking lot and a fast-food restaurant. Road realignments and extensions across the site facilitate access to the larger One North Redevelopment Area, improving traffic flow and establishing a gateway to North Kansas City’s downtown. EPA continues to work with the local government to ease property transactions and construction planning, ensuring the long-term protectiveness of the site’s remedy and supporting the site’s successful redevelopment. 
Last updated October 2025

As of December 2024, EPA had data on 3 on-site businesses. These businesses employed 45 people and generated an estimated $6,490,000 in annual sales revenue. For additional information click here.

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BIG RIVER MINE TAILINGS/ST. JOE MINERALS CORP.

The 110-mile Big River Mine Tailings/St. Joe Minerals Corp. Superfund site is in St. Francois county, Missouri. From 1742 to 1972, mining operations resulted in enormous piles of mine waste tailings and chat on-site. The site includes nine large areas of mine waste. Over 100 years of lead mining left behind large piles of mine waste that dwarfed the towns of St. Francois County. The chat has been used extensively as aggregate for ballast in railroads, aggregate in concrete and asphalt and construction fill. Some chat is still used today as aggregate and fill. Tailings have been used as agricultural amendments due to the lime content. The mine waste contains elevated levels of lead and other heavy metals, which pose a threat to human health and the environment. Erosion of these deposits have resulted in contaminated soil, sediment, surface water and groundwater through transport by wind and water erosion and have been manually relocated to other areas throughout the county. EPA added the site to the National Priorities List in 1992. The cleanup includes mine waste removal and stabilization and providing alternate drinking water to impacted residents. Land uses at the site include residential, commercial, industrial, recreational, public services, agricultural and ecological areas. EPA and potentially responsible parties test residential properties, schools, daycares and parks for heavy metals, and replace contaminated soil as needed. In 2019, EPA’s Superfund Redevelopment Program started a regional support project, working on a reuse assessment for the site. It identified community redevelopment priorities across four cities – Park Hills, Bonne Terre, Leadwood and Desloge – in St. Francois County. Development of a solar reuse assessment for the site followed. In 2024, EPA issued updated lead guidance that lowered the residential screening level for lead at Superfund sites. EPA published the second five-year review for the site in February 2025 and recommended the evaluation of the residential soil cleanup level for lead to ensure it is consistent with the updated EPA soil lead guidance. EPA will determine whether additional actions should be taken to further reduce the risk of future elevated blood levels in young children at the site. 
Last updated October 2025

As of December 2024, EPA had data on 999 on-site businesses. These businesses employed 12,913 people and generated an estimated $1,690,622,611 in annual sales revenue. For additional information click here.

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CARTER CARBURETOR

The Carter Carburetor site is in St. Louis, Missouri. From 1915 to 1984, companies made carburetors on-site. Manufacturing activities led to contamination of soil and debris. EPA’s cleanup included asbestos and debris removal as well as demolition and capping of on-site structures. EPA partnered with local leaders and other stakeholders and hosted public meetings and information sessions to make sure the community had a voice in site activities. Cleanup finished in 2020. Long-term monitoring is ongoing. EPA’s Region 7 and EPA’s Superfund Redevelopment Program launched a reuse planning process in 2019 to align reuse planning with remedy features and long-term monitoring. The Herbert Hoover Boys and Girls Club (the Club) is next to the site. In September 2020, EPA signed a Prospective Purchaser Agreement with the Club. The agreement provides the Club with liability protections. In 2021, the Club acquired the site with plans to open an urban golf center in collaboration with Gateway PGA Reach. A non-profit, Gateway PGA Reach is dedicated to positively affecting the lives of youth by increasing access to the game of golf. In addition to golf activities, the center will provide after-school resources, mentoring and a path to college for neighborhood youth. EPA and local partners also worked to refine the reuse plan for another part of the site owned by the city of St. Louis. Potential uses include pollinator habitat, commercial and community facilities, and parking.
Last updated October 2025

As of December 2024, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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COMPASS PLAZA WELL TCE

The Compass Plaza Well TCE Superfund site is in Rogersville, Missouri. It consists of contaminated groundwater that has contaminated domestic wells and irrigation wells. The site includes a small cluster of wells in Greene County near Compass Plaza, a commercial area in Rogersville. In 2010, the Missouri Department of Natural Resources found trichloroethene in the Compass Plaza strip mall drinking water well and at two nearby public wells. EPA provided water treatment systems to residents with private wells contaminated with TCE. EPA, in cooperation with the MDNR, Greene County Resource Management and the Natural Resource Conservation Service, capped a well with high levels of TCE to protect groundwater resources and oversaw the construction of a new drinking water well. EPA added the site to the National Priorities List in 2012. Investigations and monitoring are underway. A manufacturing business is active on-site.
Last updated October 2025

As of December 2024, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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ELLISVILLE SITE

The Ellisville Site Superfund site is in St. Louis County, Missouri. It includes three separate areas, or operable units. The 85-acre Rosalie property is OU-1. A sewer worker found buried drums on the property in 1980. Investigations found the buried drums had also contaminated soil at OU-1. The 11.6-acre Bliss property is OU-2. The Bliss Waste Oil Company was active there during the 1960s and 1970s. The company put waste on-site, dumping and burying drums. The 8-acre Callahan property is OU-3. In 1980, investigations found buried drums at OU-3. EPA added the site to the National Priorities List in 1983. To clean up OU-1 and OU-3, EPA removed contaminated soil and drums, backfilled with clean soil, and reseeded the area. EPA took OU-3 off the NPL in 2017. Cleanup for OU-2 included removing contaminated soil and incinerating it or taking it to a permitted landfill. EPA did more short-term cleanup activities west of the Bliss property in an area considered for residential development. Groundwater investigations by EPA and the Missouri Department of Natural Resources are ongoing. A housing subdivision is on the Rosalie property. Ecological uses on the Bliss and Callahan properties include streams and small ponds. 
Last updated October 2025

As of December 2024, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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FINDETT CORP.

The Findett Corp. site is in St. Charles, Missouri. The Findett Corporation opened an industrial facility on-site in 1962. It reprocessed heat transfer fluids, hydraulic fluids, solvents and catalysts. The process fluids and materials contained hazardous substances, including volatile organic compounds and polychlorinated biphenyls. Facility operations contaminated soil and groundwater. The site came to EPA's attention in the late 1970s, when Findett Corp. reported handling PCBs. EPA’s inspection found improper waste disposal practices on-site. EPA did not add the site to the National Priorities List but it is an NPL-caliber site. EPA is addressing the site through the Superfund Alternative Approach. Historically, cleanup involved the use of a groundwater pump-and-treat system to contain contamination and prevent off-site migration. Additional remedial actions are being evaluated to accelerate site cleanup and overcome technical challenges with running the pump-and-treat system, however. A separate source area was discovered in 2012 at the Ameren MO Huster Road substation located about ½-mile northeast of Findett. The electrical substation is still active and remedial actions are being evaluated to address contamination originating from the substation. 
Last updated October 2025

As of December 2024, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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FULBRIGHT LANDFILL

The Fulbright Landfill Superfund site is in Springfield, Missouri. It consists of two closed landfills – the 98-acre Fulbright Landfill and the 114-acre Sac River Landfill. From 1962 to 1974, the landfills accepted industrial and domestic wastes that contaminated soil and groundwater. In 1983, EPA added the site to the National Priorities List. EPA and the parties responsible for the contamination, including the city of Springfield, cleaned up known areas of contamination at both landfills. Cleanup activities, which included the removal of drummed waste and contaminated soil, finished in 1992. Groundwater monitoring is ongoing. The site’s location near the Little Sac River is ideal for recreational use. The city expressed interest in expanding nearby trails onto cleaned-up areas of the site. EPA’s Superfund Redevelopment Program supported a reuse planning process to identify potential future uses that could be compatible with the site’s remedy. Stakeholders met to explore reuse options as well as innovative techniques to protect the site’s remedy. A police department firing range remains active on-site. In 2020, a segment of the Fulbright Spring Greenway Trail opened on-site. It connects to several local parks, neighborhoods and an elementary school. People use it for walking, biking and running. More trail work is underway.
Last updated October 2025

As of December 2024, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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MADISON COUNTY MINES

The 511-square-mile Madison County Mines Superfund site is in Fredericktown, Missouri. Mining operations began in the area in the early 1700s. They ended in the mid-1900s. Mine operations left behind 13 major tailings and chat deposit areas. Contaminated soil, tailings and chat were used in residential areas for fill, foundation bases, driveway aggregate and topsoil. Contaminated materials were also used as aggregate for road construction and as traction on public roadways during winter weather. EPA added the site to the National Priorities List in 2003. Cleanup includes removing contaminated soil and replacing it with clean soil. Mine waste locations are being addressed in stages, as cleanup plans are finalized. A Health Education Program and a Voluntary Institutional Controls Program are in place through cooperative agreements with the Missouri Department of Health and Senior Services. The U.S. Forest Service manages part of Mark Twain National Forest on-site. The federal recreation area supports hiking, camping and water access for fishing and kayaking. Other continued uses at the site include residential, recreational, commercial, industrial, ecological and agricultural areas. At the site, over 2000 residences have been remediated and 200 properties remain to be cleaned up. About 35 businesses are active on-site.
Last updated October 2025

As of December 2024, EPA had data on 32 on-site businesses. These businesses employed 493 people and generated an estimated $21,652,010 in annual sales revenue. For additional information click here.

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MINKER/STOUT/ROMAINE CREEK

The Minker/Stout/Romaine Creek Superfund site is an unincorporated residential area near Imperial, Missouri. In the early 1970s, the Bubbling Springs Ranch horse arena sprayed dioxin-contaminated oil to control dust. The dioxin-contaminated soil from the horse arena was later used as fill material in local residential areas. These areas included the Minker, Stout, Cashel and Sullins homes. Much of the fill from the Minker residence eroded into Romaine Creek. In 1983, EPA found dioxin in soil on site and in Romaine Creek sediments. EPA added the site to the National Priorities List in 1983 and permanently relocated 11 families affected by the contamination. From 1985 to 1989, EPA removed about 26,420 tons of soil. The contaminated soil was taken off-site for incineration in 1996 and 1997. In all but one area at the site, cleanup levels were achieved, excavating dioxin-contaminated soils exceeding one part per billion to a maximum depth of 4 feet or to bedrock. The one area with residual concentrations of up to 266 ppb at a depth of 4 feet remains covered by clean backfill with permanent survey markers. EPA completed cleanup in 1997. The site remains in continued residential use.
Last updated October 2025

As of December 2024, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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MISSOURI ELECTRIC WORKS

The 6.4-acre Missouri Electric Works Superfund site is next to U.S. Highway 61 (South Kings Highway) in Cape Girardeau, Missouri. It consists of soil and groundwater affected by polychlorinated biphenyls related to servicing and remanufacturing electric equipment. Missouri Electric Works, Inc., sold, serviced and remanufactured electric motors, transformers and equipment controls at the site from 1953 to 1992. The company processed electrical equipment that was filled with oil containing PCBs. Part of its operations recovered oil from electrical equipment and recycled or disposed of the oil. These operations resulted in soil and groundwater contaminated with PCBs. During a facility inspection in 1984, the Missouri Department of Natural Resources found soil contaminated with PCBs and over 100 drums containing PCB-contaminated oil. EPA added the site to the National Priorities List in 1990. EPA did more investigations from 1985 to 1988 to characterize the contamination. Soil cleanup included the excavation, processing and treatment of PCB-contaminated soils using thermal desorption technology. On-site construction activities to put the remedy in place began in June 1999 and finished in September 2000. Soil cleanup has finished. Ongoing groundwater monitoring and institutional controls address the two groundwater aquifers affected by site contamination. Land use restrictions limit the use of the site property to industrial and commercial uses. In 2010, a buyer bought and redeveloped the property. The renovated former facility building now hosts a commercial business. A self-storage facility is also on-site. 
Last updated October 2025

As of December 2024, EPA had data on 2 on-site businesses. These businesses employed 7 people and generated an estimated $1,899,490 in annual sales revenue. For additional information click here.

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NATIONAL MINE TAILINGS

The National Mine Tailings site is in a former mining region known as the “Old Lead Belt,” about 70 miles south of St. Louis, Missouri. The site is part of the larger Big River Mine Tailings site, which includes eight large areas of mine waste and covers about 110 square miles. Cleanup included moving lead contaminated mine waste and regrading and covering the removal area with clean fill. EPA worked with the potentially responsible parties and property owners to make sure businesses at Park Hills Industrial Park could remain open during the cleanup. Today, several businesses and new facilities are located at the industrial park. Commercial, industrial, recreational, ecological and public-service uses are active on parts of the site. Facilities on-site include manufacturers of tank trailer parts and plastics as well as a mechanical construction contracting business.
Last updated October 2025

As of December 2024, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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NEWTON COUNTY MINE TAILINGS

The Newton County Mine Tailings Superfund site encompasses over 600 square miles of Newton County and part of Lawrence County. Extensive mining in the area from the mid 1800s to 1970 resulted in underground mine openings with exposed lead, cadmium and zinc ores. Waste from mining activities contaminated surface soil, sediments, surface water and groundwater with heavy metals. EPA added the site to the National Priorities List in 2003. Cleanup activities include the removal and disposal of contaminated soils and sediments, capping of disposal areas, revegetation of the excavated and capped areas, and monitoring. Institutional controls restrict the use of the disposal areas. Removal of contaminated residential yard soils and temporary replacement of residential water supplies has restarted. Cleanup of heavy metal-contaminated wastes, soil and sediment is ongoing. EPA will continue to work on road repair and revegetation. A city park has reopened on-site. It includes sand courts for volleyball, a playground, picnic pavilions, open space and a walking trail. Its cleanup and restoration restored a vital recreation resource in the community, providing access to facilities for sports and other outdoor activities. Overall, the ongoing cleanup of mine waste and contaminated soils has returned over 375 acres to beneficial use, including residential and agricultural uses. 
Last updated October 2025

As of December 2024, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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NEWTON COUNTY WELLS

The Newton County Wells Superfund site is in Joplin, Missouri. From 1972 to 1982, FAG Bearings, now Schaeffler Group USA Inc., made ball bearings on-site. These operations contaminated soil and groundwater. The Missouri Department of Health initially found the contamination during an investigation in 1991. The contaminated groundwater extends from the facility under parts of the villages of Saginaw and Silver Creek. The total area affected is about 2.5 square miles. EPA added the site to the National Priorities List in 2000. Cleanup, overseen by the Missouri Department of Natural Resources, included connecting affected homes to the public water supply, abandoning some private wells, removing and treating contaminated soil, and monitoring groundwater to assess the natural breakdown of site-related contaminants. Groundwater monitoring is ongoing. Institutional controls prevent contact with the groundwater. Schaeffler Group USA Inc.’s manufacturing facility remains active on-site.
Last updated October 2025

As of December 2024, EPA had data on one on-site business. This business employed 293 people and generated an estimated $4,614,000 in annual sales revenue. For additional information click here.

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OAK GROVE VILLAGE WELL

The Oak Grove Village Well Superfund site is in Franklin County, Missouri. It consists of two areas of groundwater contaminated by volatile organic compounds. The contaminated groundwater is located in the city of Sullivan and Oak Grove Village. In 1986, sampling by the Missouri Department of Natural Resources first detected contamination at the site. EPA added the site to the National Priorities List in 2002. Cleanup activities included providing residents previously served by private wells with an alternative water supply and the use of air mitigation systems at a local commercial show cave. Groundwater sampling at municipal and private wells and air sampling at the show cave is ongoing. Site uses include residential and commercial areas that remain in continued use as well as the show cave, which has reopened to visitors after the successful cleanup of airborne contaminants. 
Last updated October 2025

As of December 2024, EPA had data on one on-site business. This business employed 10 people and generated an estimated $572,222 in annual sales revenue. For additional information click here.

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ORONOGO-DUENWEG MINING BELT

The 646-square-mile Oronogo-Duenweg Mining Belt Superfund site is in Joplin, Missouri. Mining, milling and smelting of lead and zinc ores at the site began in the 1850s. These operations continued in some site areas until the 1970s. Smelting operations dispersed airborne contaminants, contaminating site groundwater, surface water and soil with metals, including lead. EPA added the site to the National Priorities List in 1990. Cleanup addressed contamination at over 3,000 residential properties and agricultural lands in surrounding communities and included installing 51 miles of water mains, connecting over 500 homes to public water supplies, removing an estimated 25 million cubic yards of mine waste and contaminated soil, and constructing wetlands. Cleanup is ongoing.     Collaboration among EPA, the state of Missouri and the community resulted in innovative approaches to encouraging productive new uses. After signing a Prospective Purchaser Agreement with EPA, a scrap metal recycler bought and cleaned up 40 acres of the site before building its facility. The Missouri Highway and Transportation Department built a Route 249 highway bypass across part of the site that was cleaned up by EPA. Cleanup of a 12-acre former mine pit and waste area provided new level areas that supported a 23-acre expansion and infrastructure improvements at neighboring King Jack Park.   Former mining land in Webb City has been transformed into the 300-acre Centennial Park development. New businesses there include a farm and home goods retailer, restaurant and hotel. Nearby, a new 1.3-mile trail provides public access to the Cardinal Valley Habitat Restoration Project. The project features restored prairie, wetland, woodland and pollinator habitat on former mining lands. In 2024, 10 graduates of EPA’s Superfund Job Training Initiative received training to prepare them for environmental jobs in the community. The site continues to support other residential, agricultural, commercial, industrial and public service uses. More reuse planning is underway. Over 4,000 acres of cleaned-up land are ready for redevelopment. 
Last updated October 2025

As of December 2024, EPA had data on 356 on-site businesses. These businesses employed 3,797 people and generated an estimated $742,213,207 in annual sales revenue. For additional information click here.

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PCB INC - MISSOURI

The PCB Inc – Missouri site is in Kansas City, Missouri. Since 1982, PCB Treatment, Inc. treated and disposed of polychlorinated biphenyl-containing materials at its 7-story building. Combined with its second location in Kansas City, Kansas, the business received more than 25 million pounds of PCB-containing materials from about 1,500 parties. Facility operations contaminated soils as well as building walls and floors. EPA inspected the facility in 1985 and issued a Notice of Violation. Facility operations stopped in 1986. EPA took down the building in 2005. EPA took over 19,000 tons of contaminated materials to landfills, including drums containing chemical waste. Cleanup finished in 2005. A mixed-use development opened on-site in 2019. The 12-story building includes a luxury apartment complex with 126 residential units, first-floor retail space, parking and an infinity pool overlooking Liberty Memorial, Penn Valley Park and the Arts District. 
Last updated October 2025

As of December 2024, EPA had data on 2 on-site businesses. These businesses generated an estimated $550,000 in annual sales revenue. For additional information click here.

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POOLS PRAIRIE

The Pools Prairie Superfund site is near Neosho, Missouri. The U.S. government purchased the property in the 1940s for a U.S. Army installation named Fort Crowder. The facility supported rocket engine production and testing and later jet airplane engine manufacturing, testing and refurbishing. Waste disposal and weed control practices at several military and private industrial facilities in the area contaminated groundwater and soil. EPA added the site to the National Priorities List in 1999. The site’s potentially responsible parties are cleaning up the contamination. EPA and the Missouri Department of Natural Resources provide oversight. EPA and the PRPs identified four source areas that resulted in groundwater contamination affecting private drinking water wells nearby. Cleanup includes connecting 200 homes to the public water supply, digging up and treating soil, and monitoring groundwater. Investigations and cleanup are ongoing. Uses on-site include a storage building, a tiny house manufacturing business and corporate apartments. The Missouri Army National Guard is active on the area of the site that is part of Camp Crowder.
Last updated October 2025

As of December 2024, EPA had data on one on-site business. This business employed one person and generated an estimated $88,939 in annual sales revenue. For additional information click here.

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RIVERFRONT

The 321-acre Riverfront Superfund site is in New Haven, Missouri. In 1986, the Missouri Department of Natural Resources found that the public water supply wells on-site were contaminated with industrial chemicals. EPA identified six different areas of concern where different sources contributed to the contamination. EPA added the site to the National Priorities List in 2000. Cleanup includes groundwater monitoring and use restrictions, land use restrictions, treatment of soil and groundwater contamination, and installation of water treatment units for area homes. Contaminated groundwater vapor in one home resulted in the decision to relocate one resident. Today, the site supports new and continued uses. One site area is now a New Haven Public Works Department yard waste/gravel storage and composting area. After the cleanup of this area finished, EPA and the state of Missouri took it off the NPL in September 2021. Another site area is now a part of an industrial park that hosts warehouses and manufacturers. On part of the site near the Missouri River, a bed and breakfast, a distillery, a brewery and a kayak/paddleboard manufacturer attract people visiting area wineries. Other parts of the site include residential and rural areas.
Last updated October 2025

As of December 2024, EPA had data on 7 on-site businesses. These businesses employed 108 people and generated an estimated $12,985,140 in annual sales revenue. For additional information click here.

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SHENANDOAH STABLES

The 7-acre Shenandoah Stables Superfund site is located near Moscow Mills, Missouri. In 1971, a St. Louis waste oil hauler sprayed the horse arena with dioxin-contaminated oil for dust control. Afterward, several adults and children became ill and many birds, rodents and horses died. In 1971, site operators removed contaminated soil for use as fill material for a new highway. In 1972, site operators put more soil from the arena in a swampy area on-site. EPA sampling in 1982 confirmed dioxin contamination of the arena soil. EPA added the site to the National Priorities List in 1983 and started cleanup in 1990. Cleanup included the removal and off-site burning of 6,452 tons of dioxin-contaminated soils at the Times Beach incinerator. After the removal of contaminants, the cleanup of storage structures and fencing further protected public health and safety. Cleanup finished in 1997 and EPA took the site off the NPL in 2001. Today, the site remains in continued use as a horse stable and home on-site.
Last updated October 2025

As of December 2024, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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SOUTHWEST JEFFERSON COUNTY MINING

The Southwest Jefferson County Mining Superfund site includes all of Jefferson County, except for the Herculaneum site. Jefferson County is located in the northern part of the Old Lead Belt, a region where heavy metal mining began in the early 1700s and expanded into industrial-scale operations during the 1800s. By 1855, Jefferson County was home to three operational smelters and numerous active mines, collectively shipping over 3 million pounds of lead each year. As a result of mining activities, lead and other heavy metals contaminated the soil, sediment, surface water, and ground water. Mine waste was also transported via the Big River and used throughout the county as topsoil, fill material and road aggregate in residential areas. Sampling at the site began in 2004, with additional assessment work carried out in 2007. That same year, EPA initiated removal activities, excavating contaminated residential soils and transporting them off-site for disposal. EPA added the site to the National Priorities List in 2009 and continued its cleanup efforts. Cleanup included backfilling and revegetation of these areas. The remedy also included health education for residents and institutional controls to protect areas from lead recontamination. A remedial investigation and feasibility study for the Big River and floodplain are ongoing. In 2021, the site was among those selected by EPA to receive additional cleanup funding. With this funding, EPA is working on backlogged remedial construction projects and accelerating cleanups at NPL sites. As of December 2024, EPA has sampled over 7,121 residential properties and led cleanups at more than 1,773 properties. Sampling and remediation work are ongoing and are expected to continue until remedial action objectives are met. Over 1,300 private residential wells have been sampled across the county; more than 130 of these wells had unsafe levels of lead. EPA is providing point-of-use water (POU) treatment filters to these homes. More POU filters are available for homes with young children and people with special needs. Several years' worth of replacement filters are also being provided. Sampling of private residential groundwater wells is ongoing. As more contaminated wells are found, those homes will also be offered POU units. Current site uses include residential, commercial, industrial, ecological, public service and recreational areas.
Last updated October 2025

As of December 2024, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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ST. LOUIS AIRPORT/HAZELWOOD INTERIM STORAGE/FUTURA COATINGS CO.

The St. Louis Airport/Hazelwood Interim Storage/Futura Coatings Co. Superfund site, also known as the Formerly Utilized Sites Remedial Action Program site, is in St. Louis City and St. Louis County, Missouri. It includes two areas – the St. Louis Downtown site and the North County site. The St. Louis Downtown site includes the Mallinckrodt Chemical Plant and 63 nearby properties. From 1942 to 1957, under contracts with the U.S. government, operators processed uranium ore on-site. Byproducts containing radioactive residuals went to properties near the St. Louis Airport during this same period. In 1966, some of this byproduct material was moved about a half-mile northeast to a property on Latty Avenue for interim storage. From 1977 to 1986, the U.S. Department of Energy brought more contaminated soils to the Latty Avenue properties. Residues from these operations contaminated other properties nearby as well as Coldwater Creek. Coldwater Creek flows through northern St. Louis County until it discharges into the Missouri River. The North County site consists of the St. Louis Airport site properties and the Latty Avenue properties (including the Hazelwood Interim Storage site and the Future Coatings Company). It also includes Coldwater Creek, which extends 15 miles from the St. Louis Airport site to the Missouri River, and over 148 nearby properties located along haul routes and in the 10-year floodplain of Coldwater Creek. EPA added the North County site to the National Priorities List in 1989. The U.S. Army Corps of Engineers manages cleanup activities. EPA provides oversight. Cleanup includes soil removal and disposal. Sampling and cleanup are ongoing. Commercial and industrial businesses, homes and recreation areas are on-site. These areas include stores as well as metal salvage and steel fabrication facilities. The areas also include residential properties and parks in the 10-year floodplain of Coldwater Creek, and a section of the St. Louis Riverfront Trail. Public service uses are also on-site. These uses include railroad lines, bridges and part of a floodwall that protects the St. Louis area from Mississippi River floodwaters. There is also a timber salvage yard on-site. 
Last updated October 2025

As of December 2024, EPA had data on 73 on-site businesses. These businesses employed 6,947 people and generated an estimated $3,171,728,860 in annual sales revenue. For additional information click here.

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SYNTEX FACILITY

The Syntex Facility Superfund site is in Verona, Missouri. Before development, the 180-acre area along the Spring River hosted agricultural and recreational uses. Hoffman-Taff began making chemicals on-site in the 1960s for the U.S. Department of Defense as part of the production of Agent Orange. Hoffman-Taff leased part of the facility to Northeastern Pharmaceutical and Chemical Company for the production of hexachlorophene, a chemical antiseptic. Syntex Agribusiness bought the facility in 1969, with NEPACCO continuing to operate until 1972. Waste disposal in several areas at the facility contaminated soil and groundwater. Fish downstream in the Spring River also showed signs of contamination. State and federal agencies began investigating waste management and disposal practices at the facility in 1979. The EPA added the site to the National Priorities List in 1983. Contaminated soils were addressed using excavation and treatment, capping and revegetation. Aquifers in the surrounding area are used by rural households for domestic purposes and some agriculture and by water utilities and large-scale agricultural operations. In 1996, Syntex sold the East Area of the site to DuCoa, L.P. In 2001, DuCoa, L.P. sold the East Area to BCP Ingredients, Inc., which is the current owner of the East Area and operator of the facility. The facility makes human-grade and feed-grade choline chloride products. The West Area of the site is not in use and remains owned by Syntex.
Last updated October 2025

As of December 2024, EPA had data on one on-site business. This business employed 59 people and generated an estimated $88,851,000 in annual sales revenue. For additional information click here.

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TIMES BEACH

The 1-square-mile Times Beach Superfund site is 20 miles southwest of St. Louis, Missouri. The site is a former city that sprayed its roads with waste oil to control dust in the early 1970s. In 1982, EPA found that the city had used dioxin-contaminated oil to suppress dust. During the same time period, the Meramec River flooded the city and residents evacuated their homes. The Centers for Disease Control and Prevention recommended the permanent relocation of evacuated residents. EPA added the site to the National Priorities List in 1983. EPA transferred funds to the Federal Emergency Management Agency for the permanent relocation of residents and businesses. All residents relocated by the end of 1986. The state of Missouri took ownership of the site and cleanup activities finished in 1997. In 1999, Missouri opened the Route 66 State Park at the site. EPA took the site off the NPL in 2001. Route 66 State Park includes a section of the historic roadway, including a bridge across the Meramec River. The park provides more than 7 miles of trails for hiking, biking and equestrian use. Visitors can see a range of wildlife, including turkeys, geese, deer and more than 40 species of birds. Other park amenities include a visitor’s center, picnic areas and a boat ramp that provides access to the Meramec River. In 2012, EPA reassessed the park to see if any residual dioxin contamination remained above a recently revised cleanup goal. The reassessment found that the current use of Route 66 State Park does not pose risks to visitors or park workers.
Last updated October 2025

As of December 2024, EPA had data on one on-site business. This business employed 4 people. For additional information click here.

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VALLEY PARK TCE

The Valley Park TCE Superfund site is in Valley Park, Missouri. It consists of two source areas: the Wainwright Industries and Valley Technologies properties. Wainwright Industries ran a metal stamping and tool and die shop at the site from 1949 to 1979. Part of the manufacturing process included a solvent degreasing system that used the solvent trichloroethylene from 1963 to 1970 and perchloroethylene from 1970 to 1979. Wainwright Industries and Valley Technologies used the area for metal processing. Several other businesses operated at the former Wainwright Industries property in 1979. Beginning in 1954, Valley Technologies operated Prevision Forgings and Valley Heat Treat on-site. Precision Forgings made aluminum pressings and Valley Heat Treat provided heat treatment services for metal parts. EPA added the site to the National Priorities List in 1986. On November 16, 2020, EPA issued a ROD Amendment to change the soil remedy at the Wainwright Industries source area to thermal remediation. EPA began the remedial action for the Amended Remedy on August 30, 2024, which is ongoing. EPA issued the OU02 ROD Amendment dated September 30, 2019, to change the soil remedy at the Valley Technologies source area to thermal remediation. EPA began the remedial action for the Amended Remedy on September 28, 2022, which is ongoing. 
Last updated October 2025

As of December 2024, EPA had data on 4 on-site businesses. These businesses employed 42 people and generated an estimated $4,245,000 in annual sales revenue. For additional information click here.

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WESTLAKE LANDFILL

The 200-acre Westlake Landfill Superfund site is in Bridgeton, Missouri. In 1939, rock quarrying and crushing activities took place on site. Beginning in the early 1950s, operators used parts of the site property as a landfill for municipal solid waste and construction debris. An asphalt/concrete processing plant was also on the property during quarrying activities. In 1973, operators used soil mixed with uranium ore processing residues as daily cover in the landfilling operation, resulting in radiological contamination of two areas. The U.S. Nuclear Regulatory Commission investigated the site in the 1970s. It found two areas affected by radiological materials. EPA added the site to the National Priorities List in 1990. Active landfilling of new waste at the on-site Bridgeton Landfill ceased in 2004 and a waste transfer station later opened next to the former Bridgeton landfill. In 2008, EPA chose a cleanup plan for the site. Cleanup included putting in a landfill cover, restricting future land use and monitoring groundwater. In 2018, EPA amended the cleanup plan for radiological areas of the site. The cleanup now includes partial digging up and off-site disposal of contaminated material and placement of an engineered cover over the landfill. With oversight from EPA, the potentially responsible parties (PRPs) are working on the cleanup of the radiological and non-radiological areas and are investigating groundwater contamination. EPA will select a cleanup plan for site groundwater, if appropriate, after the PRPs finish the groundwater investigation. Non-landfill part of the site remains in industrial use. as a solid waste transfer station. A tractor-trailer storage facility is on another part of the site. 
Last updated October 2025

As of December 2024, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here.

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WHEELING DISPOSAL SERVICE CO., INC., LANDFILL

The Wheeling Disposal Service Co., Inc., Landfill Superfund site is in a rural area near the city of Amazonia in Andrew County, Missouri. Wheeling Disposal Service Company ran a sanitary and industrial landfill at the 200-acre property starting in the early 1970s. Waste disposal activities contaminated soil and groundwater with metals, organics and pesticides. The landfill closed in 1986. EPA added the area to the National Priorities List in 1989. Cleanup included upgrading the landfill cap with a clay and soil cover and monitoring groundwater and surface water. Land use restrictions do not allow farming on capped areas. Construction of the remedy finished in 1994. EPA took the site off the NPL in 2000. The landfill is fenced. The rest of the site is farmland. There is also a private hunting preserve on-site. 
Last updated October 2025

As of December 2024, EPA did not have economic data related to on-site businesses, or economic data were not applicable due to site use. For additional information click here. For additional information click here.

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Last updated on November 6, 2025