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Focus and Commitment
From Hopper & Dennis to Hopper Dennis Jellison, and now HDJ Design Group, we continue to build and enhance relationships with our clients.

For 36 years, our focus on quality, service, and commitment to our clients has remained constant.

Vancouver Waterfront

HDJ is providing civil engineering design and support
for this $1.5 billion project.

About HDJ Design Group
HDJ Design Group is a full service civil engineering firm situated in the Pacific Northwest. Our corporate headquarters is located in Vancouver, Washington, with our Tri Cities and Walla Walla offices serving eastern Washington.

Effective April 1st, HDJ will be a division of PBS Engineering and Environmental. [Read More]


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