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Greenhorne & O'Mara Consulting Engineers
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Headline: About Us
Infrastructure & Design | Federal | Technology and GIS Services
Hazardous Materials / Hazardous Waste | Hazards Mitigation Services Transportation | Environmental Planning and Compliance
Water Resources Services | Natural Resources | Cultural Resources


Greenhorne & O'Mara (G&O) is a full-service, multidisciplinary consulting engineering firm with a culture of
  • Personalized client service
  • Innovative solutions
  • On-time project delivery

With 17 offices, we serve clients in the private and public sectors on projects located throughout the United States and overseas. Founded in 1950, G&O is an employee-owned firm that is consistently ranked by Engineering News Record among the top 25 percent of architectural/engineering design firms in the United States.

Our large and diversified staff of more than 650 knowledgeable and quality-oriented employees offers our clients a broad spectrum of engineering expertise.

Infrastructure & Design
  • Planning - Site and Master Plans
  • Military Planning
  • Landscape Architecture
  • Site Infrastructure - SWM/Roadways/Water/E&S
  • Geospatial Services and GIS
  • Site Infrastructure and Civil Engineering Design
Related Link:
Infrastructure & Design Projects

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Federal
  • Civil and Structural Engineering Design
  • Civil/Infrastructure Engineering
  • Structural Engineering
  • Transportation & Traffic Engineering
  • Geospatial Services & GIS
  • Military Master Planning
  • Security and Hazard Mitigation
  • Building Information Modeling
  • Public Private Partnerships
  • Enhanced Use Leasing
  • NEPA
  • Water Resources
  • Design Build
  • Disaster Response (Using FEMA and CEI resources)
  • Cultural Resources
  • Security Cleared Consulting Services
Related Links:
Federal Projects | Information Technology & GIS

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Technology and GIS Services
  • Technology systems design
  • Software applications and services development
  • Digital Public Square - Gov2.0 Stat and transparency systems
  • Building Information Model (BIM) CAFM (Computer-Aided Facility Management)
  • Facility and asset management
  • Hazard modeling
  • Critical infrastructure vulnerability assessment
  • Pedestrian safety
  • Campus support systems
  • Transportation modeling
Related Links:
IT & GIS Projects | IT & GIS Services

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Hazardous Materials / Hazardous Waste
  • Project and remediation oversight
  • Health and safety plan development
  • Regulatory compliance audits
  • Pollution prevention planning
  • Property transfer audits
  • Preliminary assessments and site investigations
  • Remedial Investigation / Feasibility Study (RI/FS)
  • All Levels of Environmental Site Assessments (ESAs)
Related Links:
Security & Hazard Mitigation Projects | G&O Hazard Mitigation Services (PDF) | Part-time opportunities on G&O FEMA contracts
FEMA MAT | MAT Expert Database | Information Technology & GIS

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Transportation
  • Transportation Planning
  • Traffic Engineering
  • Highway Design
  • Bridge and Structural Design
  • Construction Engineering and Inspection
  • Coatings Consulting and Inspection
  • Bicycle/pedestrian planning and design
  • Bridge Inspection
  • Maintenance of Traffic Engineering
  • Right of Way Acquisitions
Related Link:
Transportation Projects | Information Technology & GIS

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Environmental Planning and Compliance
  • National Environmental Policy Act (NEPA)
  • Project Development and Environmental (PD&E) Studies
  • Section 4 (f) evaluations
  • Air and noise assessments
  • Viewshed assessments
  • Environmental compliance reviews
  • Compliance support system development
  • Training and publications
  • Agency coordination and facilitation services
  • Public involvement and outreach
Related Links:
Water & Environment Projects | Environmental Sciences Services
Information Technology & GIS

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Water Resources Services
  • Hydrology and Hydraulics (H&H)
  • Flood control
  • Dredging and navigation studies
  • Stormwater
  • Stream / Channel
  • Sediment transport and scour analysis
  • Watershed
  • National Pollutant Discharge Elimination System (NPDES) MS4 (Municipal Separate Storm Sewer Systems)
  • Water quality
  • Water and wastewater engineering
  • GIS (Geographic Information Systems)
  • Public outreach and education
Related Links:
Water & Environment Projects | Environmental Sciences Services
Information Technology & GIS

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Natural Resources
  • Wetlands
  • Streams
  • Wildlife and forest management
  • GPS (Global Positioning System) surveys
  • GIS (Geographic Information System) modeling
Related Links:
Water & Environment Projects | Environmental Sciences Services
Information Technology & GIS

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Cultural Resources
  • Cultural resources surveys
  • Archaeological site surveys and excavations
  • GIS (Geographic Information System) mapping
  • National Register of Historic Places nominations
  • Section 106 compliance
Related Links:
Water & Environment Projects | Environmental Sciences Services
Information Technology & GIS
Featured Project
Residential Community Initiative
Residential Community Initiative
Ft. Belvoir, Virginia

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