Ribbon Cutting Celebrating of Reopening of Westside Road in Record Time!

In February, Sonoma County’s Westside Road suffered a crippling landslide, cutting off an important access route for the community. Less than seven months later, the community celebrated the successful emergency engineering response and fast-paced design and construction, making it possible to reopen the road to the community.  GLA’s Petaluma-based Principal Engineering Geologist and Project Manager…

NGWA M. King Hubbert Awardee: Marvin Glotfelty

Principal Hydrogeologist and GLA’s wholly owned subsidiary Clear Creek Associates’ Co-Founder Marvin Glotfelty, PG, has been selected as the 2025 recipient of the National Ground Water Association (NGWA) M. King Hubbert Award. The award is presented to a person who has made a major science or engineering contribution to the groundwater industry through research, technical…

GLA Recognized Among ENR’s Top Regional Design Firms for 2024

We’re proud to share that GLA has been named to Engineering News-Record’s (ENR) 2024 Top Design Firms lists for multiple U.S. regions, including the West (Alaska, California, Hawaii, Nevada, Oregon, and Washington), and the Mountain States and Southwest (Arizona, Colorado, Idaho, Montana, New Mexico, Utah, and Wyoming). This recognition reflects our strong regional presence and…

Safety and Groundwater Experts Featured in Water Well Journal

The June 2025 edition of Water Well Journal (WWJ) features GLA subject matter experts Russell Granfors, CSP, GLA’s Corporate Health and Safety Program Administrator, and  Marvin Glotfelty, RG, Co-Founder, Principal Hydrogeologist of wholly owned subsidiary Clear Creek Associates. Mr. Granfors was featured in WWJ Closeup discussing keys to a good safety program, overlooked regulations, safety…

ENR Top Environmental Firm

GLA was ranked #134 (up from #137) on the 2024 Engineering News-Record (ENR) Top 200 Environmental Firms list. GLA and its wholly owned subsidiaries, including  Clear Creek Associates,  Daniel B. Stephens & Associates, Kunkel Engineering Group, Geo-Logic Perú, Summit Water Resources, and The MINES Group provide environmental consulting and engineering services to reduce risks to human…

Top International Design Firm

For the first time in company history, GLA has ranked on the Engineering News-Record (ENR) Top 225 International Design Firms list. GLA’s international work comprised nearly 20% of GLA’s revenue in 2023 with projects in Brazil, Bulgaria, Canada, Turkey, and of course, Peru, where we have a full-service office location. GLA’s successful application of an…

Effective-Stress Site Response Analysis Published

Seismic site response analysis is an analysis performed to evaluate the behavior of soil deposits and/or earthfill facilities such as landfills and dams when subjected to strong ground shaking.  The most advanced version of this analysis is called effective-stress site response analysis because it includes seismically-induced pore water pressure generation and dissipation.  Effective-stress analysis is…

ENR Top Design Firm

GLA jumped up the Engineering News-Record (ENR) Top 500 Design Firms rankings to #245. GLA and its wholly owned subsidiaries, including  Clear Creek Associates, Daniel B. Stephens & Associates, Kunkel Engineering Group, Geo-Logic Perú, Summit Water Resources, and The MINES Group had our best year yet with a wide range of successful projects—especially, the highly effective…