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Sonoma County Opens New Green Fleet and Materials Lab Facility


Sonoma County Opens New Green Fleet and Materials Lab Facility

Construction on Sonoma County’s new $9.5 million Fleet and Materials Lab facility was recently completed on time and within budget, providing a new home for the County’s green fleet in a building designed with the environment in mind. The project was completed by Alten Construction (, a full-service San Francisco Bay Area commercial construction company.

The Fleet and Materials Lab was designed by Kwan Henmi Architecture & Planning, and built sustainably by Alten Construction. The facility was designed to incorporate solar panels on the roofs and bio-swales on site that capture storm-water runoff and improve ground water absorption. Inside the service area, radiant heating and insulation regulate temperature fluctuations, providing a comfortable work environment and allowing for sensible energy use. A Leadership in Energy and Environmental Design (LEED) Silver green building certification is pending.

“The County of Sonoma’s vehicle fleet is the greenest in the nation. Our staff is excited and proud of our new green building, which is a reflection of our commitment to sustainability,” said Sonoma County Board of Supervisor’s Chairperson, Efren Carrillo.

The 21,000-square-foot facility will be used for servicing the county’s fleet of vehicles and for testing and analysis of soil and paving materials, which needed to be relocated due to planned new Courthouse construction. The facility includes full-service vehicle and equipment maintenance and repair for both the County and other jurisdictions.

Sonoma County has earned 30 awards since 2009 including 19 related to sustainability efforts and successes in managing its fleet, including being named the No. 1 Government Green Fleet in North America and recognized by the Environmental Protection Agency with a Clean Air Excellence Award for Transportation Efficiency Innovations in 2015. The fleet facility includes electric charging stations for 20 of the county’s 49 electric vehicles.