Applied Earth Sciences · Since 1973
Gorian & AssociatesGeotechnical engineers & engineering geologists in Thousand Oaks, CA
Practical and cost effective solutions to complex geotechnical and geological site conditions, from the first boring to the last compaction test.

Services
Three disciplines, one team
Geotechnical Engineering
Subsurface exploration, lab testing and analysis for foundations, slopes, retaining walls and grading.
Engineering Geology
Geologic mapping, fault trenching, landslide and slope stability evaluation for Southern California terrain.
Material Testing & Inspection
Soil and construction material testing and special inspection, with observation during construction.
Southern California ground
Steep slopes, landslides, active faults
Common constraints here include steep natural slopes, landslides, active faults, hard rock and expansive, compressible or liquefiable soils. Evaluating a site's geology early is how we help design development plans that fit the ground.
See representative projects
Common questions
- What does Gorian and Associates do?
- Geotechnical engineering, engineering geology and earthquake engineering, plus consultation, observation and testing services during construction.
- How long has the firm been in business?
- Since 1973. The firm was founded in Westlake Village by civil engineer Gerald Gorian with colleague Robert McCardell.
- Where is the office?
- 3595 Old Conejo Road, Thousand Oaks, CA 91320. The firm moved into its newly built facility at the west end of the Conejo Valley in 2002.
- Do you have a testing laboratory?
- Yes. Soil and construction material testing is performed in the firm's AASHTO and City of Los Angeles accredited laboratory.
- What areas do you work in?
- Mainly Ventura County and western Los Angeles County, including the Palmdale/Lancaster area, with projects from San Luis Obispo to San Diego.
- Who leads each project?
- Each project is directed by a principal or senior professional whose experience most closely matches the project requirements.
- How do I start a project?
- Call (805) 375-9262 or email info@gorian.net.
Planning a project in Ventura County?
3595 Old Conejo Road, Thousand Oaks, CA 91320