Cal Engineering & Geology provided complete geotechnical services for planning, design, and construction of the City Offices Facility for the City of Orinda. The new (2007) facilities included a two-story, 15,000 square foot building situated on a hillside overlooking downtown Orinda. The primary geotechnical challenge at the site included highly localized variations in subsurface soil conditions. As a result the project included heavy involvement with project architects and structural engineers regarding the design and construction of the most cost-effective foundation system. The selected foundation system utilized a hybrid of piles, spread footings, and retaining wall all supported on bedrock. The completed project was the first public building in Contra Costa County to attain LEED certification.