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American Geotechnical & Environmental Services, Inc.

Canonsburg, PA

American Geotechnical & Environmental Services (A.G.E.S.), Inc. is a specialty engineering practice that provides comprehensive geotechnical design and environmental services. Headquartered in Canonsburg, Pennsylvania, with branch offices in King of Prussia, Pennsylvania, McLean, Virginia, and New Jersey, it has grown to become one of the largest specialty geotechnical consultancies in the northeastern United States. The practice focuses on delivering geotechnical engineering solutions for public infrastructure projects, including highways, bridges, transit, rail, aviation, and water resources.

WebsitePhone3 offices12 leaders1 credentialsFounded 1995Size Estimate: 70-99 employees

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Subsurface Explorations and InstrumentationService: Soil and Rock Laboratory TestingIndustry: TransportationIndustry: TransitType: Geotechnical Engineering+11 more

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Building & Earth Sciences, Inc.

Birmingham, AL

The Benchmark for Professional Services

Website5 offices3 credentialsUpdated Jun 2026

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Geotechnical ConsultingService: Subsurface ExplorationIndustry: CommercialIndustry: InfrastructureType: Geotechnical Engineering+37 more

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Dulles Engineering, Inc.

Sterling, VA

Your Trusted Partner in Quality Control & Geotechnical Solution

WebsitePhone1 office8 projects1 leaders7 credentialsFounded 2017

Project: New Frederick Douglass Memorial Bridge and Suitland Parkway / I-295 Interchange

Service: Geotechnical EngineeringService: Construction Materials TestingService: Laboratory TestingIndustry: InfrastructureIndustry: TransportationType: Geotechnical Engineering+6 more

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ECS Group of Companies

Chantilly, VA

Your Go-To Engineering Consulting Partner

Website1 office6 projects1 leadersFounded 1988Size Estimate: 1,000+ employeesUpdated Jun 2026

Project: SK Innovation EV Battery Site

Service: Geotechnical EngineeringService: Subsurface ExplorationService: In-Situ TestingIndustry: CommercialIndustry: IndustrialType: Geotechnical Engineering+48 more

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Engineering Materials Technologies, Inc.

Manassas, VA

Quality Matters

WebsitePhone1 office4 projects5 leadersFounded 1997Updated Jun 2026

Project: Ronald Reagan Washington National Airport (DCA) Geotechnical and Special Inspections

Service: Geotechnical EngineeringService: Subsurface ExplorationService: Problem Soil EvaluationIndustry: AirportsIndustry: Highways & RoadsType: Geotechnical Engineering+31 more

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Engineering and Testing Services, Inc.

Hampton Roads, VA

Local Experience, Local Team, Locally Focused

WebsitePhone1 office10 projects2 credentialsFounded 2002Size Estimate: 1-25 employees

Project: Old Dominion University

Service: Geotechnical EngineeringService: Drilling ServicesService: Preliminary and General StudiesIndustry: GovernmentIndustry: FederalType: Geotechnical Engineering+21 more

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Froehling & Robertson

Richmond, VA

Froehling & Robertson (F&R) is a geotechnical engineering, environmental consulting, and materials testing firm headquartered in Richmond, Virginia. With more than 70 years of subsurface exploration experience, F&R serves clients across the Mid-Atlantic and Carolinas through an in-house fleet of drill rigs, soils laboratories, and an interdisciplinary team of engineers, geologists, scientists, and inspectors. Core services span geotechnical engineering, environmental consulting, construction materials testing, geostructural monitoring, drilling, and specialty engineering.

WebsitePhone1 office2 credentialsUpdated Jun 2026

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Subsurface ExplorationsService: Foundation EngineeringIndustry: InfrastructureIndustry: TransportationType: Geotechnical Engineering+22 more

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GEO Consultants Corporation

Kevil, KY

Providing Environmental, Geological Engineering and Planning Solutions Since 1997

WebsitePhone4 offices13 leadersFounded 1997Updated Jun 2026

Service detail: Environmental Consulting & Compliance

Service: Environmental Consulting & ComplianceService: Environmental ComplianceService: Groundwater CharacterizationIndustry: Environmental & RemediationIndustry: GovernmentType: Environmental Engineering+19 more

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Geo-Technology Associates, Inc.

Laurel, MD

Growing Together To Enhance Our Built Environment

WebsitePhone28 offices5 projectsSize Estimate: 600 employeesUpdated Jun 2026

Project: Ewing Town Center

Service: Geotechnical ServicesService: Construction ServicesService: High-Rise Building ConstructionIndustry: CommercialIndustry: ResidentialType: Geotechnical Engineering+13 more

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Global Geotechnical Consultants, LLC

Woodbridge, VA

Innovative Engineering with Quality Service

WebsitePhone1 office4 projects1 leaders3 credentialsFounded 2012

Project: Dulles Metro Silver Line Phase II

Service: Geotechnical EngineeringService: Geotechnical Exploration and AnalysisService: Retaining Wall DesignIndustry: TransportationIndustry: CommercialType: Geotechnical Engineering+23 more

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Pons & Associates, LLC

Herndon, VA

Sustainable Solutions

WebsitePhone1 office8 projects3 leaders5 credentials1 publications

Project: Arbor Row Athletic Fields and Stream Restoration

Service: Geotechnical EngineeringService: Geotechnical Subsurface InvestigationsService: Foundation EngineeringIndustry: CommercialIndustry: GovernmentType: Geotechnical Engineering+31 more

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Potesta & Associates, Inc.

Charleston, WV

Professional engineering and environmental consulting services

WebsitePhone4 offices3 leaders2 credentialsFounded 1997Updated Jun 2026

Service detail: Civil Engineering and Site Design

Service: Civil Engineering and Site DesignService: Site DesignService: Roadway EngineeringIndustry: MiningIndustry: Oil & GasType: Civil Engineering+48 more

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Soil Consultants Engineering, LLC

Manassas, VA

Geotechnical Engineering | Inspections | Material Testing | Environmental Compliance

WebsitePhone1 office1 projects1 credentialsFounded 1960Size Estimate: 10-60 employees

Project: Vint Hill Data Center - OVH Cloud

Service: Geotechnical EngineeringService: Subsurface InvestigationService: Soil AnalysisIndustry: Data CentersIndustry: GovernmentType: Geotechnical Engineering+20 more

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Summit Design and Engineering Services

Raleigh, NC

Impactful Project Solutions

WebsitePhone12 offices4 projects5 leaders3 credentialsFounded 1997

Project: 1000 Social Office Building & Parking Garage

Service: ArchitectureService: Architectural DesignService: New ConstructionIndustry: GovernmentIndustry: TransportationType: Architecture & Engineering+81 more

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Zannino Engineering, Inc.

Glen Allen, VA

Innovative & Reliable

WebsitePhone1 office4 projects16 leaders10 credentialsFounded 1991

Project: Manchester Condos

Service: Geotechnical EngineeringService: Subsurface InvestigationsService: Foundation Design RecommendationsIndustry: CommercialIndustry: ResidentialType: Geotechnical Engineering+25 more

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