United States Nuclear Regulatory Commission - Protecting People and the Environment

American Nuclear Corporation

Site Summary

1.0 Site Identification

Type of Site: Uranium Recovery Facility
Location: Casper,WY
License No.: SUA-667
Docket No.: 40-4492
License Status: Possession Only License
Project Manager:

Dominick Orlando

2.0 Site Status Summary

The ANC site is located in the Gas Hills region in eastern Fremont County, Wyoming. The Gas Hills is a remote, sparsely populated, rural region in Wyoming with the nearest population center (Riverton, Wyoming) approximately 45 miles (72.4 kilometers) west-northwest of the site. The site occupies approximately 550 acres (222 hectares) that were used for uranium mining and milling activities between 1959 and 1981. The ANC suspended milling activities in 1981 due to poor uranium market conditions and began the decommissioning process. Two tailings impoundments, totaling approximately 120 acres (49 hectares), are located on the site. Some decommissioning and stabilization of the impoundments have been completed, but neither impoundment has been decommissioned to the requirements in Title 10 of the Code of Federal Regulations Part 40, Appendix A. Approximately 130 acres (53 hectares) of the site may contain contaminated soil in excess of the Appendix A criteria that will need to be collected and emplaced in the tailings impoundments. In addition, isolated “hot spots” on or near the site have been identified. Due to the remote nature of the site, these concerns do not appear to pose an immediate threat to the public health and safety. Groundwater contamination, as a result of mill activities, is present on and off-site, however, it does not pose an immediate threat to public health and safety at this time because groundwater is not a current source of drinking water in this area.

Since 1994 the Wyoming Department of Environmental Quality has been performing limited decommissioning of the site pursuant to a Confirmatory Order. Specifically, the WDEQ completed placement of an interim cover on Tailings Pond No.1, removed windblown tailings, and performed limited decommissioning and capping of Tailings Pond No. 2 and ground water monitoring. The Order was most recently revised in 2017 to direct the WDEQ to perform interim stabilization of the site. WDEQ completed the majority of the interim stabilization activities in the Fall of 2018 and will complete final over-seeding in the Spring of 2019.

3.0 Major Technical or Regulatory Issues

The licensee is insolvent and funds are not available to complete decommissioning of the site.

4.0 Estimated Date For Closure


Page Last Reviewed/Updated Friday, March 29, 2019