GEOHAZ performs geologic mapping of dam sites and spillway/outlet works at scales of 1 inch=10 ft and smaller, to document all the rock types and discontinuities that can affect later dam performance and safety. Such mapping is also integrated with geologic maps of reservoir region to identify geologic hazards that may affect reservoir operation (active faults, landslides).
Here are some of the dams we have worked on: (Click for larger images)

Alaska: Cooper Lake Dam

California: Folsom Dam

Colorado: Peterson Dam

Colorado: Mountain Home Dam

Utah: Joes Valley Dam

Utah: Mountain Dell Dam

Utah: Twin Lakes Dam

Utah: First Dam

Chile: San Pedro Dam

GEO-HAZ has performed geologic mapping and hazard analyses for new road alignments and existing highways. Slope stability of natural and cut slopes and rockfall hazards are assessed via mapping, drilling, trenching, geophysics, and modeling (static and dynamic).

Critical facilities often have siting requirements and operational safety requirements that greatly exceed those for residential and commercial construction. Broadly requirements are to avoid and/or mitigate geological conditions and hazards. GEO-HAZ specializes in this field, and can often recommend modifications to siting, orientation, or design that reduce hazards while saving the project money.

We specialize in analyzing Earthquake Hazards and Landslide Hazards, as explained at those links.

Since 1984 GEO-HAZ personnel have interfaced with the Association of Environmental & Engineering Geologists (AEG) to keep abreast of the latest trends in engineering geology. In many cases GEO-HAZ scientists have defined the state-or-the-art, as indicated by our Principal receiving the AEG's Holdredge Award in 1999, the Geological Society of America's Burwell Award in 2000, and the AEG/GSA Jahns Disinguished Lectureship in 2013.