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

Columbia River Crossing

DEA led the national consulting team that provided transportation planning, traffic highway and bridge engineering, and public involvement for the corridor study of Interstate 5 between Portland, Ore., and Vancouver, Wash.

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Featured DEA Project

MAX I-205 LRT Extension

DEA was the lead designer for this $150 million design-build light-rail extension project in Portland, Ore.

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