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  Architecture & Engineering

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November 21, 2012

HDJ Design Group


Jason L. Mattox re-joined HDJ Design Group in the Tri-Cities as an associate principal, primarily managing design for residential and commercial projects. Mattox has 9-plus years of civil engineering experience with residential, commercial and public works projects. He has also managed roadway, drainage and stormwater projects, sewer and water and irrigation systems, and has experience in permitting for government agencies.