RGH Geotechnical and Environmental Consultants

GEOTECHNICAL, ENVIRONMENTAL, SOILS & MATERIALS LAB, CONSTRUCTION OBSERVATION & TESTING


Landslide investigation and prevention
Landslide studies and investigations

 

RGH staff are members of:

 

American Society of Civil Engineers (ASCE)

Association of Engineering Geologists

Consulting Engineers and Land Surveyors of California (CELSOC) (Redwood and Napa-Solano Chapters)

Napa Engineering Society

North Bay Engineers Club

Lake-Mendocino Engineers Club

Napa City and County Development Corporation

Wine Country Water Works Association

Construction Specification Institute (CSI)

American Public Works Association

Home Builders Association

About
RGH Geotechnical and Environmental Consultants

RGH Geotechnical and Environmental Consultants was founded in 1991. Our staff of professional engineers and geologists, field engineers and engineering technicians collectively have hundreds of years of experience in geotechnical engineering, engineering geology, construction observation and materials testing in Northern California.

We have conducted geotechnical, geologic and environmental investigations and provided construction observation and testing services for projects that include:

  • commercial and public buildings
  • residential developments
  • pipelines
  • roadways and bridges
  • water and wastewater treatment facilities
  • landfills
  • power plants
  • dams and levees

Typical geotechnical investigation/design services include evaluation of soil, geologic and groundwater conditions; and preparation of recommendations and specifications addressing grading, foundation type and design criteria, pavement construction, and surface and subsurface drainage.

Construction services include observation and field/laboratory testing of embankments, foundation excavations, pavement components, reinforced concrete and drainage facilities.

A significant percentage of our experience has involved investigations and construction observation for projects in the Coast and Mayacama Mountain Ranges. The steep terrain and complex geologic conditions in those areas requires a high level of expertise and the practical application of sound engineering judgement to design and construction problems.

We have completed thousands of projects in Sonoma, Napa, Lake and Mendocino Counties. This experience has enabled us to develop a good working knowledge of the soil and geologic conditions in the area and an understanding of the performance of projects after construction.

Our environmental projects have included; Phase I & II Preliminary Site Assessments for commercial, residential and industrial projects; soil and groundwater monitoring programs; and design and construction of impermeable liners for landfills, reservoirs and wastewater facilities.

The relevant project experience of our principals and personnel includes projects performed by RGH; our former subsidiary company, Hidalgo Associates; or with previous employers. These projects include geotechnical investigations for pipelines, pump stations, wastewater treatment facilities, and quarries in Napa, Sonoma, Lake, Alameda, Contra Costa and other counties in California, as well as projects in other states and countries.

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