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Last updated May 25, 2017

Weldon Spring Site Remedial Action Project - Department of Energy Site

The Department of Energy's Weldon Spring Site Remedial Action Project (now the Weldon Spring Site) consisted of two distinct locations, the chemical plant area and the quarry. The active remediation of the Weldon Spring Site was conducted under the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) and as part of the Department of Energy Environmental Restoration and Waste Management Program. This site contained chemical and radiological contaminants in various media originating from previous operations at the site.

The chemical plant area is located approximately two miles southwest of U.S. Route 40/61 on State Route 94. This 217-acre site has a history of explosives production, uranium feed materials plant and raffinate pit storage areas. Remediation of this area included demolition of buildings, raffinate pit cleanup, placement of waste into an on-site engineered disposal cell and site restoration. Active remediation at the site has been completed and areas that still have contamination, such as the groundwater, are being monitored as part of the selected remedy for the site.

Remediation of the chemical plant included a 170-acre prairie restoration surrounding the disposal cell. A Missouri Department of Natural Resources ecologist has conducted vegetation sampling and analysis to verify the success of the prairie restoration.

The quarry area is located approximately four miles southwest of the chemical plant. This nine-acre limestone quarry was once used as a limestone gravel supply for operations at the site. Remediation of the quarry included bulk waste removal, residual waste removal and land use controls restricting use of groundwater in the area and limiting use of the quarry to recreational purposes. The quarry continues to be monitored to ensure protection of human health and the environment. To find additional site information, including key documents, site history fact sheet, site brochure, site mapping and monitoring and an online virtual tour of the on-site interpretive center, visit the U.S. Department of Energy Weldon Spring webpage.

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