Under a full service contract with Western Federal Lands Highway Division (WFLHD), DJ&A provides civil engineering, environmental engineering and environmental compliance support for transportation projects across the states of Montana, Idaho, Wyoming, Oregon, and Washington.

Recently, DJ&A supported WFLHD in completing a variety of environmental tasks to support the NEPA documentation required to complete roadway repairs along eleven damaged sites in northern Idaho. The subject roadway was damaged by major flooding events, and needed a variety of repairs for damaged roadbeds, culverts, and bridges, and the deposition of significant amounts of coarse alluvial material across the roadway.

DJ&A first completed a Biological Resource Survey and Report of the project area to determine the presence of any species of concern and habitat that could be impacted by the road repairs.  The final report included recommendations for avoiding and mitigating the impacts of the project.

DJ&A then completed a Wetlands and Other Waters of the U.S. Survey and Report to delineate wetlands in the project area and to explore the potential impact of the project. Wetland boundaries were mapped and used to support compliance with Section 404 permitting for the project.

Key Services

  • Provided project management including coordination with U.S. Forest Service (USFS), FHWA staff, and U.S. Fish Wildlife Service (USFWS)
  • Wetland delineation and reporting
  • Produced environmental documents compliant with NEPA and Section 404 of the Clean Water Act
  • Completed GIS mapping of wetland boundaries
  • Utilized GPS to physically identify the boundaries of the wetlands at 20 to 40-foot intervals
  • Completed wetland functions and values assessment

Value Added

In order for this potential project to meet the funding schedule for the following year, DJ&A mobilized a team of specialists within 10 days of a signed contract to complete the necessary field work prior to the onset of winter.