Established 2011 · Riverside, California

Engineering the ground beneath every great structure.

Sable Canyon Geotechnical helps developers, architects and public agencies build with certainty. From subsurface investigations to foundation design and construction oversight — our licensed engineers deliver reports you can defend and designs that last decades.

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Sable Canyon drill crew performing a soil boring investigation on a Riverside hillside

Who We Are

A boutique geotechnical firm with the depth of a national practice.

Founded in 2011 by Robert Ryan, Sable Canyon Geotechnical grew from a two-person consultancy into a trusted partner for Southern California's most demanding hillside, industrial and public-works projects. We combine field-tested craft with the analytical rigor of modern soil mechanics.

Every report is stamped by a California-licensed Geotechnical Engineer, reviewed in-house, and delivered on a schedule you can plan around.

Meet the Team

What We Do

Six core service lines. One accountable team.

Geotechnical Investigations

Rotary-wash and hollow-stem borings, CPTs, seismic refraction and lab testing calibrated to your project's footprint and life-safety category.

Foundation Design

Shallow, mat and deep-foundation recommendations engineered around soil-structure interaction, settlement limits and 2022 CBC compliance.

Slope Stability & Grading

Static and pseudo-static slope analyses, remedial grading plans and shoring for hillside developments across Riverside and Orange counties.

Seismic & Fault Studies

Site-specific seismic hazard assessments, liquefaction evaluations and Alquist-Priolo fault-rupture investigations.

Pavement Engineering

R-value and CBR-based flexible and rigid pavement designs for commercial lots, industrial yards and municipal roadways.

Construction Observation

Full-time and part-time observation, compaction testing, pier inspection and final geotechnical certification letters.

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Why Sable Canyon

Reports that hold up in plan-check, in court, and in the ground.

Licensed authorship. Every report signed by a California GE — no ghost-authored deliverables.
Local subsurface knowledge. A proprietary database of 800+ SoCal borings speeds evaluations and reduces surprises.
Plan-check friendly. Formatting and content that Riverside County, San Bernardino County and City of Los Angeles reviewers already know.
Responsive scheduling. Field mobilization within 5–7 business days on standard investigations.
Independent lab. In-house AASHTO-accredited soil laboratory — no outsourcing delays.

Layered soil core samples on the Sable Canyon laboratory inspection table

Client Voices

Trusted by developers, agencies and design teams.

Sable Canyon turned a difficult expansive-soil site into a buildable pad. Their remedial grading plan saved us four weeks in the field.

Their liquefaction report cleared plan-check on the first submittal. That never happens on projects near the fault.

The observation team caught a compaction issue our contractor missed. Professional, thorough, and always available on the phone.