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U.S Department of Energy Office of Legacy Management Letter of Notification of Exceedance of Groundwater Protection Standards for Monitoring Wells SWAB-4 and SWAB-12R at the Split Rock, Wyoming, Disposal Site

Accession Number: ML26020A132

Date Released: Wednesday, January 21, 2026

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• ML26020A133 - U.S Department of Energy Office of Legacy Management Letter of Notification of Exceedance of Groundwater Protection Standards for Monitoring Wells SWAB-4 and SWAB-12R at the Split Rock, Wyoming, Disposal Site (1/15/2026)
• ML26020A134 - Sample Locations & Flow Direction Paths Split Rock, Wy, Disposal Site (11/14/2025)