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September 11, 2019
Jason Yunlong Liu, Ph.D., has returned to HNTB Corp. as senior technical advisor in the Seattle tunnel ventilation and fire life safety engineering group. Based in the Bellevue office, he delivers tunnel ventilation engineering design and analysis in the U.S. Liu worked with HNTB on Seattle-area projects between 2011-2016 and has over 20 years of industry experience. He has led the concept design of tunnel ventilation systems and done ventilation and fire safety design for road and railway tunnels. He has contributed to over 100 infrastructure, commercial, industrial and residential developments, including abroad. His Seattle work includes the detailed design of the SR 99 tunnel ventilation and fire engineering. HNTB is an infrastructure firm.