West Lake Landfill

West Lake Landfill. It is a closed, inactive landfill located in Bridgeton, Missouri, within St. Louis County, Missouri. The site gained significant notoriety due to the confirmed presence of radioactive waste from mid-20th century activities linked to the nation's early nuclear weapons program. This contamination has led to its designation as a Superfund site, prompting ongoing federal oversight, complex cleanup negotiations, and sustained community activism over environmental and health risks.

History

The landfill began operations in the 1960s as a municipal and commercial waste disposal facility. In 1973, approximately 8,700 tons of leached barium sulfate residues, containing uranium and radium, were illegally mixed with soil and brought to the site. This material originated from the Mallinckrodt Chemical Works, which processed uranium ore for the Manhattan Project during World War II. Ownership of the landfill changed hands over subsequent decades, involving companies such as Cotter Corporation and later Republic Services. The site ceased accepting waste and was officially closed in the 1980s, with a clay cap installed over portions of the property.

Environmental concerns

Primary environmental concerns center on the potential migration of contaminants through groundwater, surface water, and air. Investigations have monitored for the release of radon gas and possible contamination of the underlying Burlington Limestone aquifer, which is part of a regional karst system. Adjacent to the site is the separate Bridgeton Landfill, where a subsurface smoldering event has raised fears that increased temperatures could affect the stability and containment of the radioactive materials. The Missouri Department of Natural Resources and the United States Environmental Protection Agency have conducted extensive environmental sampling to assess these pathways.

Radioactive contamination

The radioactive contamination primarily consists of processed wastes from the early Cold War era. Analyses confirm the presence of radium-226, thorium-230, and decay products, with some areas exhibiting significantly elevated levels of gamma radiation. The waste is commingled with general landfill debris, complicating its characterization and isolation. Studies by the Agency for Toxic Substances and Disease Registry have evaluated potential off-site exposure risks to surrounding communities from both particulate matter and gamma rays.

Superfund designation and cleanup

The site was added to the National Priorities List in 1990, placing it under the federal Superfund program administered by the Environmental Protection Agency. For decades, the cleanup process was stalled by debates over the appropriate remedy and responsible parties. A major decision was reached in 2018 when the EPA, under Administrator Scott Pruitt, selected a plan for partial excavation of the radioactive material, estimated to cost over $200 million. The United States Army Corps of Engineers is involved in oversight due to the site's connection to the nation's legacy atomic waste. Implementation has been a protracted process involving negotiations with potentially responsible parties like Republic Services and Bridgeton Landfill, LLC.

Community impact and activism

The situation has profoundly impacted local communities, including Bridgeton and neighboring St. Louis suburbs, fostering a persistent environmental justice movement. Groups such as Just Moms STL and the Missouri Coalition for the Environment have organized sustained advocacy, demanding complete removal of the waste and transparent health monitoring. Concerns over elevated rates of cancer and other illnesses in the area have been a central focus, though definitive epidemiological links remain difficult to establish. The activism has drawn attention from state and federal representatives, including former Senator Claire McCaskill and Congresswoman Ann Wagner.

Category:Superfund sites in Missouri Category:Landfills in the United States Category:Bridgeton, Missouri Category:Radioactive waste in the United States