Technical Specialties

Environmental Planning and Documentation

Successfully balancing social, economic, and environmental interests is challenging for applicants, regulatory agencies, citizens, and decision makers. DEA works in partnership with all project stakeholders to identify and resolve environmental issues to create a sustainable future for people, plants, and wildlife.

Services

  • Biological studies, including assessments and evaluations for sensitive, threatened, and endangered species
  • Coastal resource plans
  • Erosion control plans
  • Fisheries studies
  • Forest Service special use permits
  • Mitigation and monitoring plans
  • National Pollutant Discharge Elimination System (NPDES) permits
  • NEPA/SEPA/CEQA documents, including EAs, EISs, and EIRs
  • Resource agency consultation
  • Shoreline and coastal zone management
  • Stormwater pollution control plans
  • Vegetation and revegetation management studies
  • Water quality studies
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Featured DEA Project

Broadway Bridge Rehabilitation

DEA provided full preliminary engineering and construction engineering assistance for the rehabilitation of the 90-year-old Broadway Bridge in Portland, Ore.

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Featured DEA Project

Sea-Tac Bagwell 3D Laser Scanning/Modeling

DEA used a combination of state-of-the-art, high-accuracy laser scanning and conventional surveying methods to create 3-D models and 2-D composite drawings charting the placement and route of all pipes and tubes with at least a one-inch diameter.

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