Nuclear Regulatory Commission
The U.S. Nuclear Regulatory Commission (NRC) is considering approval of a premobilization notification (PMN) under source materials license SUA-1605, which the NRC issued to DISA Technologies, Inc. (DISA) in 2025 for the operation of its high-pressure slurry ablation (HPSA) technology to remediate abandoned uranium mine (AUM) waste. If the NRC approves the PMN, DISA could conduct HPSA operations at the Mary Ann AUM waste pile site (Mary Ann site) in Montrose County, Colorado. The NRC staff is issuing an environmental assessment (EA) and finding of no significant impact (FONSI) associated with the proposed approval. This EA tiers from the NRC staff's 2025 generic EA for the license issuance and the 2026 generic EA for the use of flocculant in the HPSA process.
Document Headings Document headings vary by document type but may contain the following: the agency or agencies that issued and signed a document the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to the agency docket number / agency internal file number the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Nuclear Regulatory Commission [Docket No. 040-38417; EAXX-429-00-000-1784158908; NRC-2026-3631] AGENCY: Nuclear Regulatory Commission. ACTION: Notice; issuance. SUMMARY: The U.S. Nuclear Regulatory Commission (NRC) is considering approval of a premobilization notification (PMN) under source materials license SUA-1605, which the NRC issued to DISA Technologies, Inc. (DISA) in 2025 for the operation of its high-pressure slurry ablation (HPSA) technology to remediate abandoned uranium mine (AUM) waste. If the NRC approves the PMN, DISA could conduct HPSA operations at the Mary Ann AUM waste pile site (Mary Ann site) in Montrose County, Colorado. The NRC staff is issuing an environmental assessment (EA) and finding of no significant impact (FONSI) associated with the proposed approval. This EA tiers from the NRC staff's 2025 generic EA for the license issuance and the 2026 generic EA for the use of flocculant in the HPSA process. DATES: The EA and FONSI referenced in this document are available on July 30, 2026. ADDRESSES: Please refer to Docket ID NRC-2026-3631 when contacting the NRC about the availability of information regarding this document. You may obtain publicly available information related to this document using any of the following methods: Federal Rulemaking Website: Go to https://www.regulations.gov and search for Docket ID NRC-2026-3631. Address questions about Docket IDs in Regulations.gov to Bridget Curran; telephone: 301-415-1003; email: Bridget.Curran@nrc.gov .…
Other Federal Register documents from the same docket.
DISA Technologies, Inc.; Environmental Assessment and Finding of No Significant Impact
DISA Technologies, Inc.; Environmental Assessment and Finding of No Significant Impact
Disa Technologies, Inc.; Draft Generic Environmental Assessment and Finding of No Significant Impact
Disa Technologies, Inc; License Application
Citation: 91 FR 52733
