1. ECM Consultants, Inc.
sub: APS Engineering and Testing, LLC
sub: GOTECH, Inc.
sub: Huval & Associates, Inc.
sub: Royal Engineers and Consultants, L.L.C.
sub: Stantec Consulting Services Inc.
sub :Volkert, Inc.
2. Meyer Engineers, Ltd.
sub: GOTECH, Inc.
sub: Gresham Smith
sub: Hardesty & Hanover, LLC
3. G.E.C., Inc.
sub: GOTECH, Inc.
sub: Greenman-Pedersen, Inc.
sub: HNTB Corporation
4. Infrastructure Consulting & Engineering, PLLC
sub: GOTECH, Inc.
sub: Greenman-Pedersen, Inc.
sub: Modjeski and Masters, Inc.
sub: Richard C. Lambert Consultants, A Professional Limited Liability Company
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