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.

Portland-Milwaukie Light Rail Project EIS | Parametrix
Portland-Milwaukie Light Rail Project EIS
Portland to Milwaukie, Oregon
Client: Metro & TriMet
Partner: David Evans & Associates

The Portland-Milwaukie Light Rail project will extend Portland’s MAX light rail system from downtown and the South Waterfront District, across the Willamette River to Southeast Portland and Milwaukie. The 7.3 mile light-rail extension features a transit/pedestrian/bike-only bridge across the Willamette River, a critical habitat for salmon species protected under the ESA. The alignment also passes through areas with brownfields, degraded shorelines, and contaminated sediments.

Parametrix completed a detailed cumulative effects review of related projects such as trails, street, and streetcar connections, supporting their expedited NEPA clearances. The EIS was completed in less than 3 years.

  • FTA’s Outstanding Achievement Award for Excellence in Environmental Document Preparation, EIS Category, 2011


  • 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