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Engeo Incorporated

San Ramon, CA

Expect Excellence

Website28 offices4 leaders1 credentialsFounded 1971Updated Jun 2026

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Geotechnical Earthquake EngineeringService: Environmental EngineeringIndustry: AirportsIndustry: CommercialType: Civil Engineering+37 more

Environmental Science Corporation

Honolulu, HI

Environmental Science Corporation (ESC) is a US-based multinational engineering and consulting practice. It provides architect-engineering design, geotechnical engineering, geophysics, topographic surveys, technical inspections, and environmental services across Hawaii, Guam, Japan, and other Pacific locations. With offices in Tokyo, Okinawa, Misawa, and Guam, ESC supports military and government facility engineering, Pacific island infrastructure development, and multilingual project execution.

Website6 offices3 projects7 leadersSize Estimate: 25-150 employeesUpdated Jun 2026

Project: Okinawa Branch Office Solar Installation

Service: Architect-Engineering DesignService: Civil DesignService: Sustainable Design DevelopmentIndustry: DefenseIndustry: GovernmentType: Architecture & Engineering+42 more

Marianas Geotech Services, LLC

Saipan, MP

Marianas Geotech Services, LLC is a consulting civil engineering practice specializing in geotechnical engineering, subsurface exploration, and construction materials testing in the CNMI and Guam. It is a licensed well driller in both territories, offering a broad spectrum of geotechnical and environmental services to support design and construction projects throughout the CNMI, Guam, the Republic of Palau, and the broader Micronesian region.

WebsitePhone3 offices1 leaders1 credentialsFounded 2016Updated Jun 2026

Service detail: Civil and Geotechnical Engineering

Service: Civil and Geotechnical EngineeringService: Analysis, Design, and Engineering ReportsService: Construction Monitoring and InspectionsIndustry: ResidentialIndustry: InfrastructureType: Civil Engineering+11 more

OYO Corporation, Pacific

Guam, GU

Doctor to the Earth

Website1 officeFounded 2010Updated Jun 2026

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Geotechnical investigationService: Subsurface explorationIndustry: DefenseIndustry: FederalType: Civil Engineering+27 more