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Environmental Management of Weldon Spring Site: Past, Present, and Future

Learn about the history, cleanup efforts, and future plans for the Weldon Spring site in Missouri. Explore current conditions, unresolved issues, and future concerns like groundwater safety and site maintenance.

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Environmental Management of Weldon Spring Site: Past, Present, and Future

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  1. Patrick Anderson, Environmental Engineer Missouri Department of Natural Resources Hazardous Waste Program Federal Facilities Section November 18, 2010 Weldon Spring Site:Past, Present, and Future 2010 Long-Term Surveillance and Monitoring Conference Grand Junction, Colorado

  2. Site Map

  3. Site Map

  4. Brief History of the Weldon Spring Site • 1940-1941 – U.S. Army acquires 17,000+ acres in St. Charles County, Missouri • 1941-1945 – Explosives produced at the Weldon Spring Ordnance Works • 1956 – 217 acres transferred to the Atomic Energy Commission (AEC); Quarry transferred in 1958 • 1956-1967 – Weldon Spring Uranium Feed Materials Plant processed uranium ore concentrates

  5. Weldon Spring Uranium Feed Materials Plant (a.k.a. Chemical Plant) 1956-1967

  6. Brief History of the Weldon Spring Site • 1968-1985 – Chemical Plant returned to the Army for defoliant production. Weldon Spring Site held in caretaker status. • 1985 – Chemical Plant transferred to DOE • 1987 – 30 July - Quarry placed on NPL list • 1989 – 30 March - Chemical Plant placed on NPL List

  7. Weldon Spring Quarry

  8. Condition of Site Prior to Cleanup

  9. Condition of Site Prior to Cleanup

  10. Condition of Site Prior to Cleanup

  11. Condition of Site Prior to Cleanup

  12. Public Reaction

  13. Cleanup and Final Disposition

  14. Cleanup and Final Disposition

  15. Cleanup and Final Disposition

  16. Cleanup and Final Disposition

  17. Cleanup and Final Disposition

  18. Present Conditions • Monitored Natural Attenuation • Institutional Controls • Long-Term Surveillance and Monitoring Plan • Annual Inspections • Interpretive Center • Hike and Bike Trails • Prairie • Outreach

  19. Present Conditions • Unresolved Issues • The State does not agree with some of DOE's statements about the site • Federal Facilities Agreement between DOE, EPA, and MDNR

  20. Future • Continuation of Liability and Due Diligence • Interpretive Center and Outreach • Training and Teaching the Next Generations • Hosting Events • Maintain a Site Presence • Institutional Knowledge (People forget) • Is the Groundwater Safe? • Is the Fish and Game Safe to Eat? • Development Pressure • Encroachment • Right Price, Meet Budget Shortfalls

  21. Thank You

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