Rio Algom Mining LLC

Current Activities

Rio Algom Mining LLC has a current RML for a former uranium milling facility in the Lisbon Valley, San Juan County, Utah. The License includes groundwater monitoring requirements and concentration limits which are based on previous modeling approvals of an Application for Alternate Concentration Limits (ACLs), approved by the U.S. Nuclear Regulatory Commission (NRC) per a May 11, 2004 License Amendment 66 (Source Materials License SUA-1119). The state of Utah obtained primacy to administer the Uranium Mill program in Utah from the NRC in August 2004, and the DRC included the conditions previously approved by the NRC in the License. Based on DRC concerns regarding the ACL concentrations, the ground water monitoring compliance requirements and compliance limits were revised and included in an amendment of the License on March 6, 2006 (Amendment 2). All changes to the concentration limits were based on ground water concentration break through curves (groundwater model) included in the Long-Term Groundwater Monitoring Plan (LTGMP).

Compliance History

About Radiation

For those wanting to learn more about Radiation, we recommend Radiation Answers, sponsored by the Health Physics Society.


Division of Waste Management and Radiation Control
Adam Wingate (—Compliance Activities
(385) 499-0293


Supplemental Site Assessment

Public Notice

2021 Public Notices

Rio Algom LLC: Public Notice, License Extension of 11e.(2) By Product License UT1900481

  • Email Comments:  (See Public Notice for submission details.)
  • Contact: (Email): Ryan Johnson (
  • Type: Public Notice, Renewal of 11e.(2) By Product License UT1900481

2016 Public Notices

Rio Algom LLC: Public Notice, Renewal of 11e.(2) By Product License UT1900481, Rio Algom, Lisbon Valley

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