Dalton, Olmsted & Fuglevand

Our hands on project experience spans conceptual feasibility studies, engineering design, project specifications, bid and award, and construction oversight.

Who we are

DOF is a specialized firm whose mission is to provide hands-on senior level environmental consulting services to industrial, commercial, and municipal clients.

By balancing technical, regulatory, and political demands from inception through completion, we help clients resolve environmental issues with smart, cost-effective solutions.

The principals of the firm are recognized industry experts bringing in-depth understanding of environmental, engineering, geological, hydrogeological, and construction issues to every project.

What we do

DOF provides environmental consulting services focused on stormwater management, soil and groundwater remediation, sediment remediation, and permitting and regulatory negotiations. DOF’s staff of industry experts often take projects from the early site investigations and feasibility studies all the way through to construction management and project closeout.


One of DOF’s principals, Tasya Gray, has joined the Women in Environment (WIE) board. Click here to learn more about the current board members.

DOF’s Teal Dreher has been working with the Western Dredging Association to create a women-focused newsletter for their Women of WEDA group, check out the latest issue here

We’re Hiring!

Our Portland and Seattle offices are looking for qualified individuals to join our team! Click here for more information.

Environmental Services