Gayle Johnson, P.E.
Senior Principal
Simpson Gumpertz & Heger Inc. (SGH)
Oakland, California, United States
Gayle S. Johnson, P.E. – Simpson Gumpertz & Heger Inc. (SGH)
Marc I. Percher, P.E. – GHD
Jhon P. Smith, Ph.D., P.E., S.E., M.ASCE – Seattle University
Stuart Stringer, P.E., S.E. – Moffatt & Nichol
Stephen E. Dickenson, Ph.D., P.E., BC.PE., M.ASCE – New Albion Geotechnical
Nason McCullough, Ph.D., P.E., G.E., M.ASCE – Jacobs
Julie A. Galbraith, P.E. – Simpson Gumpertz & Heger Inc.
Brett W. King, P.E., SE – WSP USA, Inc.
Carlos E. Ospina, PhD, P.E. – Simpson Gumpertz & Heger Inc.