Clients     Acadian Gas Pipeline System     Air Liquide America Corporation     Air Products     ARCADIS     Bechtel Corporation     Boh Brothers Construction Company     BP America     C-K Associates     CDI Engineering Solutions, Inc.     CF Industries, Inc.     ChevronTexaco Pipe Line Company     ChevronTexaco, U.S.A., Inc.     CII Carbon, L.L.C.     Coastal Technical Services     Conestoga-Rovers & Associates     Conoco Phillips     CRA Engineering     Deutsch, Kerrigan & Stiles, LLP     Dow Chemical Company     Englobal Engineering Company     Entergy Corporation     Enterprise Products Company     Environmental Resources Management (ERM)     Explorer Pipeline Company     ExxonMobil Refining and Supply     ExxonMobil Chemical Company     ExxonMobil Pipeline Company     Fluor Corporation     Ford, Bacon & Davis, LLC     Harmony Corporation     Ibberson Engineering, Inc.     Industrial Specialty Contractors, L.L.C. (ISC)     International Matex Tank Terminals     J.E. Merit Constructors, Inc.     Jacobs Engineering Group     Kean, Miller, Hawthorne, D'Armond, McCowan & Jarman, LLP     LBC Houston - LBC Baton Rouge     Lone Star NGL, LLC (LDH Energy, LLC)     Louisiana Department of Natural Resources     Louisiana Generating, LLC     Mammoet     Marathon Oil Company     Motiva Enterprises, LLC     Noranda Alumina, LLC     NuStar Energy     Olin Chlor Alkali Products Corp.     PALA Interstate     Plant Performance Services, LLC (P2S)     PL Midstream, LLC     Praxair, Inc.     Providence Engineering     S & B Engineers and Constructors, Ltd.     The Shaw Group, Inc.     Shintech Louisiana, LLC     Total Petrochemicals USA, Inc.     Union Carbide Corporation     URS Corporation     Valero Energy Corporation     Waldemar S. Nelson & Company