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General Services Agreement

DEA's Experience and Qualifications


For more than 25 years, DEA has worked closely with its clients to provide outstanding, award-winning project designs. Our environmental scientists are highly experienced in providing practical, innovative solutions to meet our client's environmental challenges. These services are augmented by a full complement of professional disciplines.

Our environmental specialties include:


Fish and Aquatic Biology

  • fish and habitat surveys, fluvial geomorphology, stream channel form and function, fish passage, riparian restoration, watershed and limiting factor analysis, bioengineering, and monitoring.

Wildlife Habitat/Biological Diversity

  • threatened, endangered, and sensitive species surveys; population viability analysis; monitoring; habitat mapping; and habitat restoration

Plant Ecology and Botany

  • plant community analysis; mapping and restoration plans; integrated vegetation management; and sensitive, threatened, and endangered plant surveys and management strategies

Water Quality

  • watershed analysis, stormwater management, wetlands creation, wetlands treatment for water quality improvements

Environmental Documentation

  • environmental assessments and impact statements, biological assessments

Landscape Design

  • sustainable landscape design, habitat restoration, seed collection, and plant collection

Resource Economics

  • habitat restoration value assessment, economic assessment of environmental conditions, and return-on-investment analysis for ecosystem improvements

Our professionals are experienced helping federal agencies comply with environmental laws and regulations, including:

  • Archaeological and Historic Preservation Act
  • Archaeological Resources Protection Act
  • Clean Air Act
  • Clean Water Act
  • Endangered Species Act
  • Executive Orders addressing wetlands, floodplains, farmland protection, and environmental justice
  • Fish and Wildlife Coordination Act
  • Migratory Bird Treaty Act
  • National Environmental Policy Act
  • National Historic Preservation Act
  • Native American Graves Protection and Repatriation Act
  • Pollution Prevention Act
  • Safe Drinking Water Act
  • State, regional, and local planning, zoning, and subdivision laws
  • U.S. Department of Transportation Act
  • U.S. Rivers and Harbors Act

DEA's federal agency clients include:

  • Bonneville Power Administration
  • Federal Aviation Administration
  • Federal Bureau of Prisons
  • Federal Highway Administration
  • General Services Administration
  • National Oceanic and Atmospheric Administration
  • National Park Service
  • U.S. Air Force
  • U.S. Army
  • U.S. Army Corps of Engineers
  • U.S. Bureau of Land Management
  • U.S. Bureau of Reclamation
  • U.S. Coast Guard
  • U.S. Department of Commerce
  • U.S. Department of Energy
  • U.S. Department of Housing
  • U.S. Department of Veterans Affairs
  • U.S. Environmental Protection Agency
  • U.S. Fish and Wildlife Service
  • U.S. Forest Service
  • U.S. Geological Survey
  • U.S. Marine Corps
  • U.S. Navy
  • U.S. Postal Service