RGH Engineering

What RGH Engineering does

RGH Consultants, Inc. is a Northern California geotechnical engineering and consulting firm founded in 1991 by three engineers — Gary Russey, Keith Gregory, and Juan Hidalgo — whose last initials form the company name. Headquartered in Santa Rosa with a secondary office in Napa, the firm serves public works, healthcare, educational, residential, commercial, winery, and construction clients across Northern California with four integrated service lines: geotechnical engineering (foundations, slope stability, drainage), geological services (fault, landslide, and hazard assessment; forensic geology; expert witness), soil and material testing through an AASHTO Re:source-accredited in-house laboratory, and special inspection services for building-code compliance.

The firm operates its own materials testing laboratory accredited by AASHTO Re:source, Caltrans, the Cement and Concrete Reference Laboratory, the Division of the State Architect, and the US Army Corps of Engineers. Technical delivery is led by three principals (two geotechnical engineers and an engineering geologist), supported by senior and project geologists, staff engineers, a lab manager, lab technicians, field engineers, and an office manager. Technicians maintain individual NICET, American Concrete Institute, and Caltrans certifications supporting the firm's qualification to bid on federal, state, and public-school projects. The firm is a member of the American Society of Civil Engineers, the Association of Environmental & Engineering Geologists, the American Council of Engineering Companies, the California Geotechnical Engineering Association, and the Construction Specifications Institute.

RGH operates as a wholly owned subsidiary of Geo-Logic Associates (GLA), an employee-owned environmental, civil, and geotechnical engineering consulting firm employing nearly 400 professionals across 31 offices in the United States and Peru. Revenue is generated through project-based professional services contracts, with each engagement quoted individually on scope and complexity; pricing is not publicly disclosed. Client acquisition runs through direct engagement (website contact forms, phone outreach) and the firm's project and inspection work in support of public agencies, institutions, and private developers.

Name

RGH Engineering

Legal name

RGH Consultants, Inc.

Website

https://rghgeo.com

Company type

Private

Founded year

1991

Operating status

Operating

Headcount range

11–50 employees

Short description

RGH Consultants is a Northern California geotechnical engineering, geological services, soil/material testing, and special inspection firm founded in 1991 and based in Santa Rosa and Napa. It serves public works, healthcare, educational, residential, winery, and construction clients and operates as a wholly owned subsidiary of Geo-Logic Associates.

Ownership category

akta.pro rank

Product category

Geotechnical Engineering Services

NAICS

Architectural, Engineering, and Related Services (5413), Geophysical Surveying and Mapping Services (541360)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Geotechnical & Subsurface Engineering Consulting (BPAHAIAB)

akta.pro secondary industry

Civil & Structural Engineering Consulting (BPAHAIAA)

Keywords

• Geotechnical engineering services
• Soil materials testing
• Geological consulting
• Special inspection services
• Foundation engineering consulting

Headquarters

HQ city

Napa

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Marketing or Sales, Technology or R&D, Others

Revenue model

1. Geotechnical Engineering Consulting: Professional consulting services providing geotechnical recommendations for deep and shallow foundations, slope stability, drainage, and other engineering concerns. Revenue is generated through project-based consulting engagements.
2. Geological Services: Geological analysis services including fault analysis, landslide assessment, hazard evaluation, dams and reservoirs, foundations, ground improvement, groundwater management, liquefiable soils, retaining walls, rock mechanics, and slope stability.
3. Soil and Material Testing: Laboratory testing services for soils and construction materials including asphalt concrete, quarried materials, concrete, and steel testing. Revenue generated through testing fees per project or specimen.
4. Special Inspection Services: Special inspection services for construction materials compliance including anchor pull testing, bolt torque verification, concrete sampling, reinforcing steel assessment, and post-tension tendon verification.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels3 records

Core offering

RGH Consultants delivers full-service geotechnical engineering, geological services, soil and material testing, and special inspection services to public and private sector clients in Northern California. The firm leverages an AASHTO-accredited in-house laboratory and a multidisciplinary team of professional engineers, geologists, and certified technicians to provide foundation, slope stability, drainage, geological hazard, and code-compliance solutions for projects ranging from dams and hospitals to residential developments and wineries.

Product overview

RGH Consultants is a geotechnical engineering and consulting firm offering four core service offerings: Geotechnical Engineering, Geological Services, Soil and Material Testing, and Special Inspection Services. These services work together to provide comprehensive analysis and insight for construction and public works projects, helping clients understand ground conditions and materials for safer building design. The company operates an AASHTO-accredited laboratory supporting its testing services.

Differentiator

Problem solved

Functional benefit

Products and services

• Geotechnical Engineering Provides geotechnical recommendations for deep and shallow foundations, slope stability, drainage, and other engineering concerns, including analysis to help design effective foundations, retaining walls, drainage systems, dams, and reservoirs for public works, healthcare, education, residential, and commercial clients.
• Geological Services Cornerstone service offering fault analysis, landslide evaluation, hazard assessment, dams and reservoirs analysis, foundations, ground improvement, groundwater management, liquefiable soils, retaining walls, rock mechanics, slope stability, failure analysis, and expert witness consultation for construction, public works, and legal clients.
• Soil and Material Testing AASHTO-accredited laboratory providing comprehensive soil and construction material testing services including maximum dry density, sieve/hydrometer analysis, Atterberg limits, consolidation, unconfined compressive strength, triaxial compression, and lime stability testing for construction and public works projects.
• Special Inspection Services Provides special inspection services including anchor pull testing, bolt torque verification, concrete sampling and strength testing, epoxy installation, reinforcing steel assessment, post-tension tendons verification, grout and mortar inspection, and shear nailing verification to ensure code compliance for construction projects.

Quantifiable outcome

• Over 30 years of continuous operation since 1991
• +2 more outcomes

Named customers6 records

Segments4 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Eight partnerships are on record, tiered core and minor.

• Geo-Logic Associates (GLA)coreOthersRGH Consultants is a wholly owned subsidiary of Geo-Logic Associates (GLA), an employee-owned environmental, civil and geotechnical engineering consulting firm. GLA provides solutions for landfills, mines, contaminated sites, municipal projects, natural resources, and water resources with nearly 400 professionals in 31 offices throughout the U.S. and Peru.
• Clear Creek AssociatesminorOthersSubsidiary of Geo-Logic Associates alongside RGH Consultants, providing environmental and geotechnical services.
• Daniel B. Stephens & Associates, Inc.minorOthersSubsidiary of Geo-Logic Associates alongside RGH Consultants, providing environmental consulting services.
• Geo-Logic PeruminorOthersInternational subsidiary of Geo-Logic Associates providing environmental and geotechnical services in Peru.
• Kunkel Engineering GroupminorOthersSubsidiary of Geo-Logic Associates providing specialized engineering services.
• Loughlin Water AssociatesminorOthersSubsidiary of Geo-Logic Associates providing water resources engineering services.
• Summit Water ResourcesminorOthersSubsidiary of Geo-Logic Associates providing water resources consulting services.
• The MINES GroupminorOthersSubsidiary of Geo-Logic Associates providing mining engineering services.

Scale indicators4 records

Recent moves7 records

Expansion highlights4 records

Market position

Competitive moat5 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/rghgeo
• LinkedInlinkedin.com/company/rgh-consultants

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about RGH Engineering