Geotechnical Engineering

AB Consultants, Inc. is a multidisciplinary consulting and engineering firm in the Baltimore-Washington area, with offices in Baltimore and Lanham, Maryland, serving clients in Maryland, Virginia, Delaware and Washington, D.C. Founded in 1993, it is a minority-owned small business providing engineering and engineering support services as a one-stop-shop for civil engineering design projects.

air vacuum excavationconstruction inspectionConstruction ManagementDrone Surveysenvironmental engineeringGround Penetrating RadarHighway Engineeringland surveyingmaterials testingPipeline Assessments / CCTVSite Civil EngineeringSubsurface Utility Explorationutility engineeringWater Resources Engineering

ACER Associates, LLC, founded in 2003 and based in West Berlin, New Jersey, is a regional environmental consulting and engineering firm serving New Jersey, Pennsylvania and the broader Northeast and Mid-Atlantic. It provides environmental consulting, geotechnical engineering, geophysical and non-destructive testing, and cultural resource management services, from due diligence through site investigation, remediation and permitting.

Archaeological investigationsconcrete scanningconstruction inspectionenvironmental consultingGeophysical testingGround Penetrating Radarnon destructive testingsite remediationwetland delineation

Achievement Engineering Corp. (Achieveng) is a minority-owned small business engineering firm founded in 2010 in San Jose, California, now with four offices across the Bay Area and Central Valley. Its team of engineers, geologists, inspectors, and administrative staff provides materials testing, inspection services, and engineering solutions for projects ranging from transportation infrastructure to commercial and residential buildings.

construction observationenvironmental site assessmentsfield testingmaterials testingnon destructive testingPSC B510PSC B517PSC B519PSC C1JBPSC F999PSC H156PSC H238PSC H256PSC H266PSC H338PSC H356PSC H956PSC H966PSC Q301PSC R428Quality assurance/quality controlremediation designseismic hazard evaluationSpecial inspectionTensile and Compression Testing

ACS Services, LLC is a Mesa, Arizona-based multidisciplinary service company founded in 2008 by Annemarie and Tom Haenfler. It provides geotechnical engineering and design, QA/QC materials testing in the field and laboratory, special inspections, environmental assessments, and drilling services to the construction industry in Arizona and the Southwest.

drillingEnvironmental assessmentsfield testingfloor flatness testinglaboratory testingmobile laboratoriespost tension inspectionQC/QA materials testingrebar inspectionspecial inspectionswaterproofingweld and bolt inspection

Advanced Engineering Services (AES) Inc. provides geotechnical engineering, construction QA/QC testing and inspection services in northwest Indiana and south Chicago areas. AES is an INDOT pre-qualified geotechnical engineering consultant (Section 7.1) and Construction Inspection firm (Section 13.1), and a certified DBE firm by INDOT and MBE firm with the Indiana Department of Administration (IDOA).

construction QA/QC testing and inspectionengineering analysisfield explorationlaboratory testingpreconstruction planning and due diligence

Advanced Remediation Technologies, Co., Inc. (ART) is a woman-owned, small business specializing in comprehensive environmental management, civil, geotechnical, and environmental engineering, coupled with design-build construction services. The company provides expert consulting services aimed at keeping the environment clean.

civil engineeringdesign build constructionenvironmental consultingenvironmental engineeringSite investigationSoil and groundwater treatment

Advanced Testing and Materials, Inc. (ATMI) opened in 2003 and is a locally owned, full-service geotechnical engineering and materials testing company based in Las Cruces, New Mexico, serving Southern New Mexico and Southwest Texas. ATMI provides construction materials testing services, field inspections, and lab analysis for residential, commercial, and industrial projects, and is accredited by AASHTO for ASTM and AASHTO testing standards.

field inspectionslab analysismaterials testingQA/QCSuperpave analysis

AEPAC is an award-winning architecture, engineering, and construction (AEC) firm founded in 2003 in Honolulu, Hawaii, and is a Woman-Owned Small Business. It specializes in historic preservation and provides civil, environmental, structural, electrical, surveying, geotechnical, landscaping, and traffic engineering services, with offices in Hawaii, Washington D.C., and Guam.

Archaeology & Cultural Managementarchitecturecivil engineeringconstructionConstruction Managementelectrical engineeringEnvironmental assessmentshistoric preservationInterior DesignlandscapingLEED designmechanical engineeringplumbing engineeringPROJECT MANAGEMENTstructural engineeringsurveyingtraffic engineering

AIMRIGHT Testing & Engineering, LLC (AIMRIGHT) is a privately held testing and engineering firm founded in 2008, serving the Midwest including Oklahoma, Kansas, Arkansas and Texas. It has 60+ employees, including registered civil/geotechnical engineers and construction inspectors, and provides site development and construction services for public and private clients.

building envelope inspectionsgeotechnical field investigation and samplinglaboratory testingmaterials testingspecial inspections

AKRF is a consulting firm serving the land development, transportation, energy, and water sectors. It provides services including acoustics, noise and vibration, air quality, civil engineering, climate resilience and adaptation, construction monitoring and inspection, cultural resources, economics and real estate consulting, environmental impact assessment, geotechnical engineering, landscape architecture, municipal and land planning, natural resources, permitting and compliance, site assessment and remediation, sustainability consulting, and traffic and

acoustics, noise and vibration consultingair quality modeling and monitoringcivil engineeringclimate resilience and adaptationconstruction monitoring and inspectionenvironmental impact assessmentlandscape architecturepermitting and compliancesite planning and designSustainability consultingtraffic and transportationwater resources

AKA is an independent, privately-owned geotechnical consulting firm located in the San Francisco Bay Area. The firm provides geotechnical engineering solutions for mitigating seismic risks and geohazards, with a diverse portfolio of engineering projects spanning multiple market sectors. AKA led an expert team of consultants for the New Ohlone Creek project in Newark, California, which received an APWA 2025 Project of the Year Award.

aerial imageryconstruction servicesexpert servicesfault assessmentgeo-hazard assessmentsgeo-investigationshazard mitigationlandslide assessmentliquefaction assessmentPSC B519seismic upgrade/historic preservation

Alliance Geotechnical Group, Inc. (AGG) is a geotechnical engineering firm described as a growing leader in the industry, building on the diverse expertise of its senior staff in a broad range of geologic settings. AGG serves a wide-ranging client base across numerous industries, with six locations across Texas and headquarters in Dallas, TX. Its fully accredited Dallas, Fort Worth, and Houston laboratories are certified by AASHTO (R18) in concrete, soil, aggregate, and asphalt, meeting ASTM E329 requirements.

construction inspectionconstruction materials testingdrillingfield testing and instrumentationforensic studieslaboratory testingpavement designQA/QC program

Alta Environmental & Infrastructure (Alta EI) is an Arizona-based engineering consulting firm providing geotechnical engineering, surveying, materials testing, civil engineering, environmental consulting, and health & safety services. It is one of Arizona's largest privately owned engineering firms with offices in Tempe, Tucson, Florence, Sierra Vista, and Flagstaff, and a multidisciplinary team of 250+ employees.

civil engineeringconstruction materials testingenvironmental consultingfoundation and pavement designhealth & safety servicesinfrastructure planningland and right-of-way servicesmaterials testingSite investigationsspecial inspectionsstormwater permittingsurveyingvertical inspection

AMEL Technologies, Inc. (AMEL) is a multidisciplinary engineering consulting firm based in Honolulu providing services in Mechanical Engineering, Energy Consulting Services, Sustainability, Commissioning, Construction Management and Geotechnical Engineering since 2004. It serves federal, state, city, commercial, medical, school, industrial, and private clients with projects across Hawaii, Guam, Japan, American Samoa and the South Pacific. It is 100% woman owned with 20+ years of experience.

Building PerformanceCommissioningConstruction ManagementEnergy Consultingmechanical engineeringSustainability

AMERIGEO, Inc. is a professional engineering consulting firm founded in 2009 that provides engineering and construction support services in the New York and New Jersey area. It is qualified as a Class 1 Special Inspection Agency in New York City and serves public and private clients. Its staff includes engineers, geologists, technicians, inspectors, field data collectors, and CADD personnel.

Construction support servicesFoundation engineeringGeophysical testingInstrumentation and monitoringlaboratory testingLiquefaction analysisRock coringSeismic retrofit analysis and designsoil samplingSpecial inspectionstructural engineeringTest boring

Anchor QEA is an environmental science and engineering consulting firm that provides engineering, environmental sciences, environmental planning and restoration, and environmental analytics services. The firm serves industrial, energy, federal, state and local, ports and waterfront, and shipyard/maritime clients across the United States, working from planning and site investigation through design, construction management, permit compliance, and environmental monitoring.

civil engineeringcoastal engineering and modelingConstruction Managementdecommissioning, decontamination, and demolitionenvironmental modelingenvironmental remediationgeospatial analysishabitat restorationpermittingsediment dredging and cappingshoreline stabilizationstormwater management

Anubis Engineering is a full-service civil, environmental, and geotechnical engineering firm based in Edinburg, Texas. It specializes in water and wastewater treatment solutions for municipalities and industries, offering support from project planning and permitting to design, construction, commissioning, and operations training. The firm reports over 40 years of technical expertise and has worked on over 200 water and wastewater treatment plants in Texas.

civil engineeringCommissioningconstruction supportdesignenvironmental consultingoperations trainingpermittingPSC C219system planningwater and wastewater treatment design

ENVIRONMENTAL & GEOTECHNICAL CONSULTANTS AP ENGINEERING & CONSULTING, INC. (APEC) is a full-service geotechnical engineering, environmental consulting, compliance management, and construction materials testing firm. To all services We are AP Engineering & Consulting, a team of licensed professional engineers, geologists, and scientists focused on client commitment and satisfaction by providing quality, efficient, and value-added solutions for our clients. AP Engineering & Consulting, Inc. (APEC) is an industry leader for geotechnical engineering, environmental consulting, and construction materials testing. We best serve our clients by being responsive, innovative, consultative, and detail oriented, by focusing on what's important on your project. We are an extension of your team, your environmental and geotechnical experts. GEOTECHNICAL INVESTIGATIONS The field of geotechnical.

asbestos inspection and mitigationconstruction inspectionenvironmental site assessmentfoundation designlaboratory testingmaterials testingsubsurface drilling and sampling

APTIM is a global professional solutions firm headquartered in Baton Rouge, Louisiana, with more than 3,000 employees across the Americas. It specializes in environmental, sustainability, resilience, and infrastructure solutions for government agencies, commercial, industrial, and energy customers, and has more than 30 years of experience in emergency management and disaster services.

civil engineeringCoastal sciences and engineeringConstruction ManagementDisaster recoverydisaster responseelectrical engineeringEmergency ManagementFACILITY MAINTENANCEfire protection engineeringFlood control engineeringFuel systems engineering and constructiongrants managementhazard mitigationmechanical engineeringPort engineeringprocess engineeringprogram managementReliability Centered Maintenancestructural engineering

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architecturecivil engineeringCost and Commercial ManagementEcological and SustainabilityEnvironmental Construction, Management and DemolitionEnvironmental Permitting and PlanningEnvironment, Health and Safety ComplianceinteriorsInvestigation and Remediationmechanical and electrical engineeringPlanning, Landscape Architecture, and Urban Designprocess engineeringProject and Program ManagementPSC 1375PSC AH11PSC AH12PSC AH31PSC AH32PSC AH33PSC AH34PSC AH35PSC B510PSC B533PSC C211PSC C212PSC C219PSC F100PSC F101PSC F103PSC F105PSC F107PSC F108PSC F109PSC F110PSC F111PSC F112PSC F113PSC F114PSC F115PSC F999PSC H291PSC H391PSC P400PSC P500PSC R404PSC R425structural engineering

Arias & Associates, Inc. is a Geotechnical Engineering and Construction Materials Testing firm in Texas, founded by Robert P. Arias, P.E. in 1996. The firm provides geotechnical engineering and construction materials testing services to public and private sector clients across Texas, with offices in San Antonio, Austin, and Arlington. It is designated as a Minority Business Enterprise (MBE) and Small Business Enterprise (SBE).

Certified Welding Inspections (CWI)construction materials testingFalling Weight Deflectometer (FWD)Foundation analysisGround improvement and soil modificationground-penetrating radar (GPR)laboratory testingNon-destructive testing of weldsPavement EvaluationPSC C1AAPSC C1ABPSC C1AZPSC C1BAPSC C1BBPSC C1BCPSC C1BDPSC C1BEPSC C1BGPSC C1BZPSC C1CAPSC C1CZPSC C1DAPSC C1DBPSC C1DZPSC C1EAPSC C1EBPSC C1ECPSC C1EDPSC C1EEPSC C1EZPSC C1FAPSC C1FBPSC C1FCPSC C1FDPSC C1FEPSC C1FFPSC C1GAPSC C1GBPSC C1GCPSC C1GDPSC C1GZPSC C1HAPSC C1HBPSC C1HCPSC C1HZPSC C1JAPSC C1JBPSC C1JZPSC C1KAPSC C1KBPSC C1KEPSC C1KZPSC C1LAPSC C1LBPSC C1LCPSC C1LZPSC C1MDPSC C1MFPSC C1MGPSC C1MHPSC C1MZPSC C1NAPSC C1NBPSC C1NCPSC C1NDPSC C1NEPSC C1NZPSC C1PAPSC C1PCPSC C1PDPSC C1PZPSC C219

ARM Group is a nationally recognized engineering and science firm offering civil and environmental engineering, electrical and automation solutions, and technical field services. It is a 100% employee-owned company with offices throughout the Mid-Atlantic and a team of 200-plus members including licensed civil, geotechnical, environmental, structural, and electrical engineers and geologists, as well as environmental scientists, hydrologists, biologists, and geophysicists.

civil engineeringConstruction Phase Servicesdesign-buildelectrical and automationelectrical repairelectrical testingenvironmental engineeringenvironmental remediationEPC managementequipment fabricationgeophysicsinfrastructure developmentsurveyingtechnical field services

Associated Earth Sciences, Inc. (AESI) is a multi-disciplinary professional consulting firm that has provided integrated geotechnical engineering, geophysical, and hydrogeological services in the Pacific Northwest since 1981 to clients in both the private and public sectors. AESI's staff of approximately 70 includes geotechnical engineers, licensed geologists, hydrogeologists, and geophysicists.

construction observationGeologic assessmentgeophysicsgeotechnical testinghydrogeologyinfiltration testingSubsurface exploration

Aviles Engineering is a Houston, Texas-based firm providing geotechnical engineering, construction materials testing and inspection, and environmental site assessment services. Its staff of 50+ employees includes licensed engineers, geologists, and certified technicians, and the firm has completed over 500 geotechnical projects and over 300 construction materials testing projects in the Houston area.

Construction ManagementConstruction materials testing and inspectionConstruction supervision and inspectionEnvironmental baseline studiesenvironmental site assessmentsOperational monitoring programsPermitting and consultingRegional geological studies