Fact csite-021
The categorical exclusion (csite-020) describes a '24-month research program': about 12 months of operation, 6 of cooldown and 6 of decommissioning, a 'single limited-duration research mission', spent fuel as 'a single core loading' shipped in casks to a DOE-approved facility, and the site returned to unrestricted use; it states the proposal 'has not been segmented' (split up to look smaller). By the 22 April signing date, the record shows: a 10,270-acre 'Green River Gigasite' reactor/data-center application to BLM pending since 13 February (mine-006); an Emery County MOU item for site testing on parcel 04-0019-0030 on 17 February (orig-046); Trust Lands' map of the Carbon lease produced 9 April (mine-048); and the state's RDCC review of that lease, opened 20 April, two days before the signing (csite-032). Afterwards, per the board's minutes, Valar representatives told the state's economic board on 9 July that they plan 'to install additional commercial units in the area' (csite-024), and a Valar representative told the Trust Lands board on 20 August that the Emery lab is now its 'whole Utah operations' including its fuel facility (mine-019). The CX's own text says segmentation 'does not include' phased proposals where each phase gets its own decision, and the CX concerns one reactor; whether DOE was told of the other sites is not in the records read.
- NEPA Determination DOE-ID-26-005: Valar Ward250 Research Reactor (categorical exclusion B5.26) (U.S. Department of Energy, Office of Nuclear Energy, 2026-04-22) primary government “The proposal has not been segmented to meet the definition of a categorical exclusion.”
- 2. GOED Board Meeting Minutes - 7.9.26 (posted with the Sept 10, 2026 meeting) (Board of the Governor's Office of Economic Development (Utah Public Notice Website), 2026-09-10) primary government “plan to install additional commercial units in the area”
- 2026-08-20 TLA Board of Trustees Meeting Audio Transcript (auto-generated) (Utah Trust Lands Administration (Utah Public Notice Website), 2026-08-24) primary government “It's now our whole Utah operations that includes our fuel facility.”
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