Weldon Spring Site, Missouri

Weldon Spring Site Cercla Five-Year Review Survey header

Take Our Survey!

The U.S. Department of Energy (DOE) is currently conducting its seventh Five-Year Review for the Weldon Spring Site.

Please take our survey and return by November 30, 2025. Just download the pdf (using the link below) and submit your comments electronically or by mail. The collected survey results will be included in the seventh Five-Year Review Report.

[Download and complete the Weldon Spring Site Five Year Review Survey]

Remediation at the Weldon Spring Site was conducted in accordance with Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) regulations. The Weldon Spring Site was transferred to the Office of Legacy Management (LM) in 2003. LM conducts long-term surveillance and maintenance at the site which includes routine inspections, site maintenance, records-related activities, stakeholder support, and operation of an Interpretive Center. For more information about the Weldon Spring Site, view the fact sheet.

Weldon Spring Ordnance Works served the nation during World War II. Weldon Spring Uranium Feed Materials Plant served the nation during the Cold War. Continuing this legacy of service, LM’s Weldon Spring Site in Missouri serves as a community asset, protecting and conserving the environment. Watch this short video about the history and ongoing work at the site.

Department of Energy Office of Legacy Management

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Discover the history and design of the engineered disposal cell at LM’s Weldon Spring Site in St. Charles County, Missouri, and its crucial role in the community.
U.S. Department of Energy Office of Legacy Management
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A glance to the past provides meaning and purpose as doors open at the Weldon Spring Site Interpretive Center.
Department of Energy Office of Legacy Management
- Community Involvement
- Weldon Spring Site Mapping and Monitoring
The Weldon Spring Site Interpretive Center offers a window to the past and demonstrates the U.S. Department of Energy’s commitment to the future. Exhibits address the history of the Weldon Spring area, the site’s contributions to World War II and the Cold War, cleanup, and continuing long-term stewardship. The interpretive center provides educational programs, tours, research opportunities, and meeting rooms for public use. The surrounding gardens, prairie, trails, and disposal cell viewing platform are open to the public to explore.
Visit Weldon Spring Site Interpretive Center for more information.
Mailing Address:
Weldon Spring Site
7295 Highway 94 South
St. Charles, Missouri 63304
Phone: (636) 300-2601
Email: weldoncomments@lm.doe.gov
For media, government officials, or community stakeholders’ inquiries, email: wsspublicinquiries@lm.doe.gov