The U.S. Geological Survey requires a contractor to build and upgrade site infrastructure for geophysical monitoring stations across California, supporting earthquake and volcano early warning systems. Initial work includes upgrading 15 volcanic-area seismic stations in Northern California, building or upgrading 15 ShakeAlert stations, and conducting wildfire mitigation construction on nine additional stations. The contract has a five-year ordering period with an estimated start date of September 15, 2026, and further similar construction is anticipated at other California locations. The scope covers installation of equipment vaults, DC power systems (including solar), grounding, telemetry, and drainage, requiring skills in demolition, excavation, concrete, electrical (DC/solar), general construction, and landscaping. No specific budget amount is provided; the work will be performed throughout California.