Our History​

Red Arrow

Parametrix was founded in 1969 in Sumner, Washington by Waite Dalrymple and George Capestany as Delta Engineering. Originally focused on the wastewater business, the firm grew quickly and diversified into six business divisions by 1974. Two divisions, Delta Engineering and Seattle Marine Laboratories, were restructured as Parametrix. 

From the beginning, Parametrix had an entrepreneurial spirit; a culture of integrity, client service, fun, inclusion, and collaboration; and a commitment to the well-being of its employees.

The Parametrix Employee Stock Ownership Plan (ESOP) was established in 1992, and through regular sales of the owners’ stock to the ESOP trust, became 100% employee-owned in 1999.

The entrepreneurial spirit spurred growth through diversity in services and locations and through acquisitions. Today, we are a full-service consulting firm with offices across the western United States. 

Key milestones of our growth

1969
Parametrix founded

Founded in Sumner, WA as Delta Engineering

1974
Became Parametrix
1977
Parametrix expands

Opened Bellevue, WA office (currently Seattle, WA office)

1989
Parametrix expands to Oregon

Opened Portland, OR office

1992
ESOP established

 Parametrix Employee Stock Ownership Plan (ESOP) established

1999
100% Employee-Owned

Parametrix became 100% employee-owned

2001
Expands to New Mexico

Opened Albuquerque, NM office

2003
Expands to Idaho

Opened Boise, ID office

2008
Acquired Taschek Environmental Consulting

Acquired Taschek, offering cultural resource services

2014
Acquired Vector Engineering

Acquired Vector, expanding transportation services

2015
Expands in Oregon and Utah

Opened Bend, OR office

Acquired InterPlan in Salt Lake City, UT

2016
Acquired Taylor Engineering

Acquired Taylor Engineering with offices in
Spokane, WA and Coeur d'Alene, ID

2018
Expands to Nevada

Opened Las Vegas, NV office

2020
Acquired Civil FX

Acquired Civil FX, providing visualization services.

2021
Acquired Pacific Geomatic Services

Acquired Pacific Geomatic Services, expanding bathymetry survey capabilities and opening an office in Mukilteo, WA

2023
Expansion in California, Oregon, and Nevada

Acquired Good Company, expanding our presence in climate change consulting with an office in Eugene, OR

Acquired Parisi Transportation Consulting with offices in Berkeley and Marin County, CA

Opened Reno, NV office

2024
Further expansion in California

Opened San Diego, CA office

2024
Expansion to Midwest

Opened Chicago, IL office

Scroll to Top