CX-034540: Offsite Seismic Monitoring Operations – CA, NV, UT

The NNSA/NFO Management and Operating (M and O) Contractor maintains seismic monitoring stations at mines in the Nevada National Security Site regi…

Office of NEPA Policy and Compliance

September 24, 2025
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The NNSA/NFO Management and Operating (M and O) Contractor maintains seismic monitoring stations at mines in the Nevada National Security Site region (California, Nevada, and Utah). There is an ongoing mission need to maintain monitoring capabilities at these sites for the purpose of continuity of data collection for comparable analysis, transparency, and verification monitoring under current program needs and potential future use as part of the Comprehensive Test Ban Treaty Program.