1. G.E.C., Inc.
sub Arcadis U.S., Inc.
sub Intelligent Transportation Systems, L.L.C.
sub Buchart Horn, Inc.
sub T. Baker Smith, L.L.C.
sub Gulf South Research Corporation
sub The Lakvold Group, LLC
2. N-Y Associates, Inc.
sub Urban Systems Associates, Inc.
sub Coastal Environments, Inc.
sub Bowlby & Associates, Inc.
sub The Lakvold Group, LLC
3. Alliance Transportation Group, Inc.
sub Buchart Horn, Inc.
sub Coastal Environments, Inc.
sub Bowlby & Associates, Inc.
sub The Mumphrey Group
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