Who We Are

CE&G is a well-established (since 1993) Bay Area geotechnical consulting and design firm that provides the full range of geotechnical and geologic investigation, analysis, and reporting, plus observation and testing services during construction. CE&G distinguishes itself from other geotechnical firms by providing full geotechnical, civil, and structural design focused on renewal and repair of public works infrastructure.

With offices in Walnut Creek, San Jose, and an office/Lab in Hayward California, we routinely prepare complete PS&E packages for public works agencies on geotechnical-related flood control and transportation projects. CE&G works extensively with public agencies directly and as a subconsultant to other engineering firms working for public agencies.

CE&G’s engineers realize the financial and environmental constraints that client projects are typically faced with. We rely on the experiences of the agency and our engineers to form the basis for selecting appropriate solutions for each project. We use known and proven technologies and methods to design and construct new and renewed/repaired infrastructure. We do not “re-invent the wheel,” but instead strive to effectively apply knowledge gained while “using the wheel” to inform our work.

Areas of Specific Expertise

  • Landslide characterization, slope stability analysis, and stabilization system design
  • Difficult-access subsurface investigation programs
  • Instrumentation and in-situ testing design, implementation, monitoring, and interpretation
  • 3D modeling of surface topography for geotechnical analyses using UAS-derived digital data sets
  • Earth retention system evaluation and full design (PS&E and structural)
  • Trenchless pipe installation design
  • Creek stabilization study and design
  • Liquefaction and settlement evaluation
  • Development and design of ground improvements for liquefiable soils and weak, settlement-prone soils
  • Geotechnical, geologic, and civil review for land development projects
  • Geo-Construction Management and administration
  • Cost estimating for geotechnical construction
  • GIS-based geotechnical asset management
  • Expert witness and neutral expert services for complex landslide litigation


Phil Gregory, PE, GE

Senior Principal Engineer, Founder, President

Mr. Gregory is an experienced geotechnical engineer and project manager who has completed more than 150 road, flood control, and creek improvement projects for public agencies over the past ten years. He is one of the founders of CE&G and remains the majority shareholder of the firm. Phil’s technical expertise is in the analysis and design of earth embankments, a wide variety of slope stabilization measures including geosynthetic reinforced slopes and embankments, CIDH pile structures, segmental block retaining walls, soil nail retaining structures, lightweight fill, and slope dewatering systems. Mr. Gregory is also an experienced Caltrans-based specification writer and estimator of earth construction costs for public works. Phil was one of the lone non-academic contributing authors of the ASCE GeoInstitute’s recently published Remote Sensing for Monitoring Embankments, Dams, and Slopes: Recent Advances, GSP 322.

Mitch Wolfe, PG, EG

Consulting Principal Geologist

Mr. Wolfe put the “Geology” in Cal Engineering & Geology. Mitch is a registered geologist and certified engineering geologist with more than 40 years of professional experience. As one of CE&G’s founders, he has coordinated and oversaw geologic site characterization for projects. Mitch has extensive experience in the characterization and mitigation of large landslides and has managed all geotechnical peer review, special inspection, and field observation services. Mr. Wolfe has served as an engineering geology peer reviewer and grading special inspector for many of the large residential hillside subdivisions in Alameda and Contra Costa Counties. His portfolio of projects includes Bettencourt Ranch, Five Canyons, Mira Vista Hills, Dublin Ranch, Fallon Village, Fallon Crossing, Jordan Ranch, Palos Colorados, Moller Ranch, Faria Preserve, Dublin Highlands, and Wallis Ranch.

On-Call Contracts

CE&G’s extensive experience has earned the confidence of many Bay Area cities, counties, and districts, resulting in nearly 30 long-term, on-call engineering services contracts. Through these relationships, CE&G has gained an invaluable understanding of the specific needs and expectations of municipal departments and how to best work with their engineers and staff.


Our approach is straightforward and simple. We understand that the best and most productive way to assist our municipal clients is to simply “fit in” and work as part of the agency’s team of department professionals.

CE&G Provides On-call Services Throughout the Bay Area

County On-Call Contracts:


Contra Costa
San Benito

San Mateo
Santa Cruz
Marin (FCWCD)

City On-Call Contracts:

San Ramon
San Pablo

Walnut Creek

Los Altos Hills
Daly City

District On-Call Contracts:

Santa Clara Valley Water District
Dublin/San Ramon Services District
Zone 7 Water Agency
Central Contra Costa Sanitary District
Canyon Lakes GHAD
Blackhawk GHAD
SF USACE (Civil / Geotech Engineering Services)

Now Hiring!

Looking for a new opportunity? Contact us at careers@caleng.com to discuss how you can be part of our growing team.
Contact Us Today!