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Since 1993 GEO-HAZ has performed slope stability reviews for ski areas and associated base facilities in Colorado. The chart below mainly lists studies made as part of an Environmental Assessment (EA) or Environmental Impact Statement (EIS), for clients such as the SE Group or the individual ski area. Projects listed for private clients are related to base-area developments on private land. Regardless of client, our task is to:
1-locate and map sites of past landslides and debris flows,
2-subdivide them by movement type and age,
3-assess their hazard in the current condition and in any anticipated future conditions, and
4-recommend a suite of mitigation measures, comparing their associated costs and degrees of hazard mitigation.

Ski area Year Title Client
Keystone 2013 Geotechnical Impacts of 2012-2013 Proposed Improvements on Keystone Mountain Front Side SE Group
Buttermilk 2012 Tiehack Express Lift Aspen Ski Co.
Aspen Mountain 2010 Geologic and Hydrologic Impacts of 2010 Proposed Improvements SE Group
Eldora 2009 Reconnaissance of the Corona Grading Area and Stream Realignment SE Group
Buttermilk 2009 Geology and Geologic Hazards of the 2009 Proposed Improvements SE Group
Vail 2008 Geology and Geologic Hazards of 2007 Vail Ski Area Improvements SE Group
Eclipse Snowpark 2007 Geology and Geologic Hazards of the Eclipse Snow Park SE Group
Crested Butte Mountain Resort 2007 Geology and Slope Stability of the Snodgrass Mountain Ski Area CBMR
Durango Mountain Resort 2006 Geology and Geologic Constraints for the Proposed Durango Mountain Resort Expansion Area SE Group
Snowmass 2005 "Geological Reconnaissance of the Slump Area, Funnel TrailSnowmass Ski Area" SE Group
Keystone 2005 Keystone Front Side Improvements SE Group
Keystone 2002 Geology and Slope Stability of the Ski Tip Expansion Area and Related Features SE Group
Copper Mountain 2002 "Photogeologic Analysis of Suspected Landslide LandformsKokomo Lift and Teaching Terrain" SE Group
Copper Mountain 2002 Quaternary Geologic Mapping of the Copper Mountain 7.5° Quadrangle Colorado Geological Survey
Breckenridge 2001 Quaternary Geologic Mapping of the Breckenridge 7.5° Quadrangle Colorado Geological Survey
Breckenridge 2001 Quaternary Geologic Mapping of the Breckenridge 7.5° Quadrangle Colorado Geological Survey
Powderhorn 2000 "Geology of the spring2000 Landslides at Powderhorn Ski areaMesaColoradoand recommendations for stabilization" Powderhorn Resort
Powderhorn 1999 "Geologic Hazards of Proposed Expansion Activities at Powderhorn Ski AreaCO" Sno Engineering
Keystone 1999 "Debris Flow Hazards at the Proposed Schick Lodge, KeystoneCO" Bowen Construction Services
Aspen 1998 "Geology and Geologic Hazards of the Buttermilk Ski Area Master PlanColorado" Aspen Ski. Co.
Aspen 1998 "Digitize Geologic and Mine Maps of Aspen MountainColorado" Aspen Ski. Co.
Aspen 1998 "Geologic Impacts of Proposed Snowmaking, Aspen Mountain Ski AreaColorado" Aspen Ski. Co.
Keystone 1998 "Geologic Hazards of the Proposed Jones Gulch ExpansionKeystone Ski AreaColorado" Sno Engineering
Keystone 1998 "Slope Stability of the Access Road to the Proposed Schick LodgeKeystoneCO" Bowen Construction Services
Aspen 1996 "Geology and Geologic Hazards Along the Aspen Highlands-Snowmass GondolaCO" Pioneer Environmental Services
Aspen 1993 "Geology, Geologic Hazards, and Hydrology of the Aspen Highlands Ski Area, Colorado" Aspen Highlands Ski Corp.