UMTRA Program

Navajo UMTRA entered into Cooperative Agreement with the U.S. Department of Energy (DOE) to assist/participate in the remedial actions activities of four Navajo UMTRA sites pursuant to the Uranium Mill Tailings Radiation Control Act of 1978 (UMTRCA).  These sites are located in Tuba City, AZ; Monument Valley, AZ; Mexican Hat, UT; and Shiprock, NM.

Navajo UMTRA provides oversight, monitoring and review of the remedial action work at these sites. By 1994, all surface remediation which included disposal of residual radioactive materials and debris has been completed pursuant to US EPA cleanup  standards and regulations.  By 1999, subsurface remediation work commenced by completing site characterization, developing remedial action plans with conceptual models and designs, and monitoring ground water remediation activities at three sites:  Mexican Hat site requires no further active ground water remediation.

Interactive Web Map

The map below shows the Navajo Nation and Chapter boundaries (brown lines) and the location of the four UMTRA sites.  The yellow building symbol shows the location of an UMTRA site.  Click on the map to start view an interactive map viewer of the UMTRA sites.  Clicking on an UMTRA site will show information in a table about each project area.  Included in the table are weblinks to the:

·DOE-Legacy Management (LM) webpage for the UMTRA sites

·DOE-LM Geospatial Environmental Mapping System (GEMS) website

·DOE-LM PDF factsheet for the UMTRA sites

  • Interactive Web Map

    Interactive Web Map

    Click the Map to access the interactive Web Map

Interactive Web Map

For more information about how to use the interactive web map

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