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Superfund Site Report: WELDON SPRING FORMER ARMY ORDNANCE WORKS
 
 
  • Map Locating Superfund Site
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  • Site Description
    Stage of Clean-up: Construction Underway

    Missouri Conditions at proposal (July 14, 1989): The Weldon Spring Army Ordnance Works occupied over 17,000 acres in St. Charles County, 25 miles west of St. Louis, Missouri, during November 1941-January 1944, when it produced TRINITROTOLUENE (TNT) and DINITROTOLUENE (DNT) for the Armed Services. A series of land transfers left the Army with 1,655 acres, which it has operated since 1959 as the Weldon Spring Training Area for the Army Reserve. The land transfers included 220 acres to the Atomic Energy Commission. Some of the transferred land, now owned by the U.S. Department of Energy (USDOE), is radioactively contaminated and is on the NPL as Weldon Spring Quarry/Plant/Pits (USDOE/Army). Other major portions of the original Ordnance Works which were transferred included 7,000 acres to the State of Missouri to establish the August A. Busch Memorial Wildlife Area, and 8,000 acres to the University of Missouri for an agricultural research area, a majority of which was later transferred to the State and is now the Weldon Spring Wildlife Area.  More...

    Sources of Contamination:
    • Discharge to sewer/surface water
    • Explosive disposal/detonation
    • Inadvertent spill
    • Incineration residuals handling
    • Lagoon disposal
    • Manufacturing process
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  • Threats and Contaminants
    In 1987, a Department of Defense (DoD) investigator found explosives such as TNT and DNT in monitoring wells near the lagoons. TNT, DNT, and LEAD have been identified in soil in several areas at the site, and TNT was detected in 1987 in surface water downstream of the lagoons. The Mississippi watershed, which supports wetlands, wildlife, and recreational activities, may be threatened by runoff from the site. The TNT and DNT contamination on the site represent a physical hazard with some potential for explosion. Ingestion of polluted surface water, groundwater, or contaminated soil may pose a threat to human health. DNT is a probable human carcinogen and may be absorbed through direct contact.


    Contaminants Detected

      Ground
    Water
    Surface
    Water
    Air Soil Other
    RADON  X  
    THORIUM    X
    URANIUMXXX  


    Groundwater and Drinking Water

    Were drinking water wells shut down due to contamination? No data
    Are drinking water wells potentially threatened? No data
     
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  • Pre-Cleanup Rankings
    EPA Hazard Ranking System scores for WELDON SPRING FORMER ARMY ORDNANCE WORKS:

    Less Hazard National Average More Hazard
    0%         50%         100%

    Overall site:
    Surface water migration:
    Ground water migration:
    Air migration:


    Rank Superfund sites in the U.S., MISSOURI, or in ST. CHARLES County by EPA Hazard Ranking Scores.

    *Note: EPA's Hazard Ranking System is designed to screen and prioritize sites for the Superfund program, based on limited data available at time of listing. These scores are not based on a comprehensive risk assessment of the site and do not reflect conditions after initiation of cleanup work.
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  • Site Information
    Site Name: WELDON SPRING FORMER ARMY ORDNANCE WORKS
    EPA ID: MO5210021288
    Address: 25 MI W OF ST LOUIS
    ST CHARLES, MO 63301
    Other Names: FT LEONARD WOOD WELDON SPRGS SS#07BC
      US ARMY TRNING CNTR & FT LNRD WD SS#07BC
      WELDON SPRINGS CHEMICAL QUARRY (FINDS)
      WELDON SPRINGS NATIONAL GUARD FACILITY
      WELDON SPRINGS-EX ARMY ORDNANCE PLANT
    Site Ownership: Federally Owned
    Category of Site: Military Related
    Date of Final Listing on the NPL: February 21, 1990
     
    List Standard Industrial Classifications (SIC) associated with current and past activities at the WELDON SPRING FORMER ARMY ORDNANCE WORKS Superfund site.
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  • Potentially Responsible Party (PRP) Involvement
    Number of PRPs currently associated with this site: 1
    Hazardous waste received from off-site generators/transporters? No
    Number of past and present PRPs who contributed less than 1% of the waste: 0
    Number of owners/operators which are also municipalities: 0
    Percent of waste at the site that is municipal solid waste: 1 - 10%

    List Potentially Responsible Parties identified by U.S. EPA as associated with the WELDON SPRING FORMER ARMY ORDNANCE WORKS Superfund site.
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