geotechnical investigations

Aaron Swan & Associates, Inc. is a materials testing and engineering consulting firm founded in 1975 in Pierre, South Dakota. It operates multiple materials laboratories and a fleet of mobile labs, offering materials testing, geotechnical investigations, civil engineering, and construction services to federal, state, local, tribal, and private construction clients.

asphalt testingbridge inspectionscivil designconcrete testingconstruction monitoringfield materials testinggeotechnical drillingmaterials laboratory testingsoil testing

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 investigationliquefaction evaluationnon-destructive testing (UT, MT, PT)pavement designseismic hazard analysisslope stability analysiswelding inspection

Burgess Engineering and Testing, Inc. is a locally owned and operated civil engineering firm and construction material testing laboratory based in Moore, Oklahoma. The company has worked on over a billion dollars worth of engineering and construction projects and provides geotechnical and construction material testing services with rapid response times.

asphalt mix designconcrete inspectionsconstruction material testingcoringdrilling and samplingFalling Weight Deflectometer testingfoundation designground penetrating radarpavement designpavement evaluationseismic refractionsoil stabilization mix designsteel and welding inspectionsutility potholing

CMJ Engineering, Inc. (CMJ) is a geotechnical engineering and construction materials testing company in Fort Worth, Texas. It provides specialty engineering consulting focused on soils and geology, foundation engineering, and related geotechnical and geological engineering, and observes/tests soils, foundations, and pavements for compliance with construction specifications. It operates a full geotechnical laboratory in Fort Worth and serves clients across North Texas, particularly Tarrant County.

concrete testingConstruction materials testingearthwork inspectionfoundation designlaboratory testingpavement designpile and pier foundationsretaining wall designrock coringslope stability studiessoils testingstructural steel inspectionultra-sonic weld inspection

Corestone Engineering, Inc. (CEI) is a geotechnical engineering and construction inspection firm based in the Reno-Sparks area of Nevada. CEI was formed in 2011 by founder Vimal P. Vimalaraj to provide fee-based geotechnical engineering, construction inspection and materials testing services. CEI is certified by NDOT, Caltrans and Utah DOT as a Disadvantaged Business Enterprise (DBE).

Construction Inspectiondrilling explorationengineering analysesfoundation designmaterials testingretaining wall designseismic site class characterizationtest pit exploration

Data Testing, Inc. is a third-generation, privately owned commercial testing laboratory based in Fort Smith, Arkansas, serving Western Arkansas and Eastern Oklahoma since 1959. It provides geotechnical investigations, construction materials testing, and environmental wastewater lab services, specializing in the analysis of soils, concrete, asphalt, water and wastewater for municipal, industrial, and private clients.

aggregate testingasphalt testingconcrete testingConstruction materials testingfield and laboratory testingrock core drilling and samplingsoil testingwastewater analysis

Despiau Associates Corp. (DAC) is a consulting geotechnical engineering firm founded in 1986 in San Juan, Puerto Rico. It performs geotechnical investigations and provides engineering assessments and recommendations to structural engineers, project developers, planners, and architects. The firm has been involved in foundation solutions for over 3,000 projects in Puerto Rico and has provided geotechnical consulting, materials testing, and inspection services on over 6,500 public and private sector projects.

analysisfoundation designinspection servicesmaterials testingsupervision

Earth Consultants International (ECI) is a geological consulting firm based in southern California. Since 1997, ECI has solved complex earth science problems for oil and gas, energy, geological hazards, and environmental industries, using 3D geologic modeling, analytics, and disciplined data management.

3D geologic modelinganalyticsdata managementexpert testimonymachine-learning modelspetrophysicsregulatory complianceseismic hazard evaluationwell log analysis

Ethos Engineering, LLC is a certified DBE/SBE engineering firm specializing in structural, geotechnical, and civil design. Founded in 2012 by Sergio Oliden in Tempe, Arizona, the company provides engineering and assessments for bridges, retaining and noise walls, drainage structures, buildings, roadway and freeway design, parking lots, and pedestrian and vehicle bridges, along with geotechnical investigations and soil/pavement recommendations.

bridge designcivil designengineering assessmentsgeotechnical engineeringgrading and drainage designstructural engineering

Foundation Engineering, Inc. is an Oregon-based geotechnical engineering firm that has provided geotechnical design and construction monitoring services since 1982. It serves the Pacific Northwest with expertise in geotechnical and geological properties, delivering analyses, designs, and recommendations for projects including airports, buildings, transportation, energy, water and wastewater, and waterfront facilities.

construction monitoringconstruction observationdewateringDynamic pile testing (PDA)Engineering Geologyforensic engineeringgeotechnical designground improvementinstrumentation and monitoringLandslide investigations and mitigationpavement designSeismic hazard studies and retrofitvalue engineering