Services & Projects
Geotechnical
By Sector
Eighth Avenue Slope Stabilization
San Francisco County
Treadwell & Rollo performed an investigation of hillside soil movement as part of our on-call emergency contract with the City and County of San Francisco. Earthquakes in 1989 triggered displacement ...
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Spyglass Hill Rock Topple/Landslide
Marin County
Treadwell & Rollo, assisted by Gilpin Geosciences, Inc., performed geotechnical and geological assessment and consultation for a landslide at the Spyglass Hill Condominium complex. Our services included a geologic assessment ...
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Yerba Buena Island Landslide
San Francisco County
Treadwell & Rollo provided emergency consultation to stabilize a landslide at Yerba Buena Island that resulted in closure of the western viaduct between the Bay Bridge and Treasure Island. Emergency ...
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