what we do

NEPA Documentation

Streamlining environmental solutions

Parametrix is recognized as a go-to firm in the West when it comes to developing and delivering high quality environmental documentation on the most complex and controversial projects. We have completed more than 200 EISs over the past 10 years. Our environmental documents ensure accountability, improve decision-making, engage the public, and protect critical elements of the natural and built environment. Our staff routinely trains environmental professionals nationally on improving the quality of NEPA documents and streamlined environmental program approaches.

Aquatic Resources Habitat Conservation Plan EIS | Parametrix
Aquatic Resources Habitat Conservation Plan EIS
Washington State
Client: Washington Department of Natural Resources (DNR)

Parametrix prepared an EIS to support the implementation of a habitat conservation plan (HCP) to protect 23 species of fish and wildlife that live on state-owned aquatic lands. The EIS evaluated effects of the HCP to species living on 2.4 million acres of aquatic lands. The intent was to maintain, improve, or provide habitat for the species, including several that are threatened or endangered.



  • Northern Mid-Columbia EA | Parametrix

    Northern Mid-Columbia EA

  • San Juan Basin | Parametrix

    San Juan Basin Energy Connect EIS

  • Columbia River Crossing | Parametrix

    I-5 Columbia River Crossing

  • Aquatic Resources Habitat | Parametrix

    Aquatic Resources Habitat Conservation Plan EIS

  • Idaho Forestry Program | Parametrix

    Idaho Forestry Program EIS

  • Portland-Milwaukie LR EIS | Parametrix

    Portland-Milwaukie Light Rail Project EIS