Bay Area Region

For more than 40 years, we’ve been providing environmental analysis and planning on a wide range of projects—from downtown high rises to regional water systems.

We partner with our clients to deliver solutions that are unique to the San Francisco Bay Area.

Founded and headquartered in the Bay Area, we’ve grown into a broad-based environmental science and planning firm with a nationwide presence. Critical to our success is the depth of technical resources in our local offices along with support from national practices throughout the company.


1425 North McDowell Blvd Ste 200
Petaluma, CA 94954
Jim O’Toole
Fax: 707.795.0902


180 Grand Avenue Ste 1050
Oakland, CA 94612
Jorgen Blomberg, MLA
Fax: 510.839.5825

San Francisco

550 Kearny St Ste 800
San Francisco, CA 94108
Brian Boxer, AICP
Fax: 415.896.0332