liquefaction evaluation

Grounded in science. Built for progress Geotechnical solutions that protect investments, people, and the future.Geotechnical services Learn more Special inspections Learn more Pavement engineering Learn more Municipal services Learn more Geological services Learn more Every decision supported by real geotechnical insight. From risk mitigation to smart foundations, we help progress move safely.Request a Proposal Services Geotechnical services Geological services Pavement engineering Special inspections Municipal services More Services Services Field Services Lab Services Geotechnical services Understand your site before it impacts your budget. We translate subsurface data into clear design guidance to reduce risk, avoid delays, and prevent costly surprises.Municipal services Build with materials you can trust. We validate performance in the lab and field to prevent rework and keep.

asphalt mix designCold In-Place Recycling designcompaction testingfault investigationgeotechnical investigationsnon-destructive testing (UT, MT, PT)pavement designseismic hazard analysisslope stability analysiswelding inspection

Dan Brown and Associates, LLC specializes in deep foundation design, construction, and testing, and slope stability problems. The firm provides geotechnical engineering services including foundation design, foundation testing, construction observation, risk assessment, and research, working on bridge foundations, micropiles, ground improvement, and landslide stabilization projects across the United States.

construction observationdeep foundation constructiondeep foundation designdrilled shaft designFoundation Testingground improvementmicropile designnumerical modelingrisk assessmentseismic analysisslope stability analysis

GeoTek is a full service consulting engineering firm incorporated in 1997, specializing in geotechnical engineering, construction materials testing, special inspections, and environmental consulting. Licensed crews work out of six offices across Nevada, California, Idaho, and New Mexico, covering the western United States including remote sites.

field testingfoundation designgeotechnical drilling and subsurface explorationICC special inspectionslaboratory testingNEPA assessmentsPhase I/II ESAsite remediationslope stability analysiswelding inspection