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.


October 11-13, 2018—Western Navajo Fair & Parade, Tuba City, AZ

October 22, 2018—STEM Event Day @ Whitehorse High School, Whitehorse, UT

October 23, 2018—STEM Event Day @ Red Mesa High School, Red Mesa, AZ

October 25, 2018—STEM-sation Event Day @ Navajo Prep High School, Farmington, NM

October 25, 2018—Dine Uranium Remediation Advisory Commission Mtg. Rough Rock Chapter House

November 8, 2018—STEM-sation Event Day @ Chinle High School, Chinle, AZ

November 16-17, 2018—Monument Valley Balloon Festival, Monument Valley, UT

November 29, 2018—Dine Uranium Remediation Advisory Commission Mtg.  Dine College Tsaile, AZ


Lakewood uranium company gets federal OK to expand in Utah (Feb. 28)




Navajo, Havasupai resist uranium mining (Feb. 27)




Amid Calls for a U.S. Uranium Mining Renewal, Recalling Its Toxic Past (Feb. 27)



Before the US Approves New Uranium Mining, Consider Its Toxic Legacy (Feb. 24)



Navajo President: Go To College, Then Bring That Knowledge Home (Feb. 18)



Researchers measure mixed metals mining contamination on Native Americans (Feb. 4)