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Greenhorne & O'Mara Consulting Engineers
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Headline: Market Sectors
Water & Environment
NEPA Compliance
G&O offers NEPA specialists that have a thorough understanding of the requirements of the National Environmental Policy Act of 1969 (NEPA) and Council on Environmental Quality (CEQ) regulations for implementing the provisions of NEPA. We have the in-house capabilities to offer a full array of environmental services from conducting technical studies to preparing compliance documentation. Our projects range from transportation corridor studies for state DOTs, to government and private development on federal lands, and supporting municipal projects receiving federal funding. Our multi-disciplinary approach during project planning results in the minimization of opposition and early resolution of issues.

Services include:
  • Environmental Assessments / Findings of No Significant Impact
  • Draft and Final Environmental Impact Statements/Records of Decision
  • Categorical Exclusions
  • NEPA Reevaluations
  • Section 4(f)/Section 6(f) Evaluations
  • Indirect and Cumulative Effects (ICE) Analysis
  • Community Effects Assessments, including Environmental Justice
  • Cultural Resources including Archaeology
  • Natural Resources including Biological Surveys
  • Hazardous Materials/Hazardous Waste Surveys
  • Public Involvement
  • Graphic Design/Presentation Materials
  • Agency Coordination
Representative Projects:

St. Elizabeths West Campus Master Plan
St. Elizabeths West Campus Master Plan for the Department of Homeland Security Headquarters Environmental Impact Statement, General Services Administration, Washington, DC



National Park
National Park Service Rehabilitation of the North Section of the George Washington Memorial Parkway Environmental Assessment, Fairfax and Arlington Counties, Virginia




Penn DOT US 219 Environmental Impact Statement, Pennsylvania

Penn DOT US 219 Environmental Impact Statement, Pennsylvania