10/20/2026
As part of the ongoing Pitkin County Geohazard, Fluvial Hazard, and Floodplain Hazard Land Use Code Update, WWE's Dr. Andrew Earles, P.E., P.H., BC.WRE, delivered a Geohazards 101 presentation to County engineering and planning staff. The session was designed to establish a common understanding of the geologic and geomorphic processes that influence development throughout Pitkin County, providing a technical foundation for future code discussions and policy decisions. A video of the presentation is available here: https://www.youtube.com/watch?v=vzKlK4a7yQU
Topics included steep and potentially unstable slopes, watercourses and drainage, floodplain hazards, fluvial hazard zones, avalanche hazards, landslides, rockfall, alluvial fans, talus slopes, Mancos shale, expansive soils, faults, and subsidence.
The presentation emphasized how both natural processes and human activities can contribute to geohazard risk, while highlighting practical mitigation strategies ranging from hazard avoidance and land-use planning to engineering design and infrastructure protection. By developing a shared vocabulary and understanding of hazard mechanisms, the training will help ground future code updates in sound science, consistent risk management principles, and the unique geologic conditions found throughout Pitkin County.
The project is being managed by Scott Schreiber, with Andrew serving as principal-in-charge.