Technical Specialties

ESA/CWA Compliance

Environmental protection laws, such as the National Environmental Policy Act and the Endangered Species Act, provide a framework for the technical studies, impact assessments, and public involvement programs needed for balancing these interests. Since 1976, DEA has helped clients anticipate potential environmental impacts as well as permit procedures and requirements. We have developed an approach to conducting environmental analyses that helps us to successfully facilitate compliance with federal, state, and local regulations.

Services

  • Biological Assessments
  • Conservation Plans
  • NPDES Permitting
  • Section 404 Wetlands Permitting
  • Stormwater Management
  • TMDL Compliance/Water Quality Modeling
Search the Site:  
Featured DEA Project

Las Haciendas Models

DEA landscape architects provided design services for a complex of nine model homes and two demonstration gardens that the client wanted to have the look and feel of a hacienda style.

Learn More


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.

Learn More