Architectural/Construction/Engineering Services - (ACE)

Organization Date of Certification 1 Bechtel Corporation and affiliates 10/16/2001 01:18:15 PM 2 Black & Veatch Corporation 01/25/2007 07:35:25 PM 3 CH2M Hill International, Ltd. 11/07/2002 04:18:38 PM 4 Chicago Bridge & Iron Company (Delaware) (This is a Delaware corporation which is a subsidiary of the 09/18/2008 01:50:48 PM 5 Det Norske Veritas 01/06/2003 05:50:21 PM 6 ENVIRON Holdings, Inc. 07/18/2005 01:28:46 PM 7 Hill International, Inc. 07/17/2009 09:52:05 AM 8 HOK Group, Inc. 01/08/2009 10:16:43 AM 9 Insituform Technologies, Inc. 10/09/2003 04:42:14 PM 10 Intergraph Corporation 04/19/2002 10:36:35 AM 11 Luvata Fabrication North America, Inc 12/22/2008 10:29:17 AM 12 Luvata North America, Inc. 12/22/2008 10:29:08 AM 13 Masco Corporation 11/18/2008 01:11:26 PM 14 PreScreen America, Inc. 01/03/2003 12:24:13 PM 15 Roush Industries, Inc. 06/15/2001 10:23:59 AM 16 Safetran Systems Corporation 06/02/2008 11:08:17 AM 17 Select Personnel Investigations LLP 12/19/2005 12:39:27 PM Previous More