The U.S. Department of Energy (DOE) prepared this supplement analysis for the Pacific Northwest National Laboratory Sequim Campus Future Development (DOE/EA-2130).
Office of NEPA Policy and Compliance
July 16, 2026
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Pacific Northwest National Laboratory Sequim Campus Future Development; Clallam County, Washington
The U.S. Department of Energy (DOE) prepared this supplement analysis (SA) to evaluate and determine whether the impacts to the human environment previously analyzed in the Pacific Northwest National Laboratory (PNNL) Sequim Campus Future Development Environmental Assessment (DOE/EA-2130) continue to be accurate considering recent changes to Federal Emergency Management Agency (FEMA) floodplain maps of the area.
For more information, see Pacific Northwest National Laboratory Sequim Campus Future Development; Clallam County, Washington.