Providing premier environmental and geotechnical solutions since 1988.

Bacich Elementary School

Marin County

Treadwell & Rollo evaluated potential geologic hazards, performed geotechnical investigations, developed earthquake design criteria, and provided geotechnical engineering services during earthwork and foundation installation for Bacich Elementary School.  Our site ...

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Fireside Housing (115 Shoreline Highway)

Marin County

Treadwell & Rollo performed geotechnical investigation for this site, which backs up against a steep slope and former rock quarry.  Development consisted of demolishing the Fireside Motel and constructing three new ...

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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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