GENERAL CONTRACTORS
- Archer Western
- Balfour Beatty
- Barnard Construction
- Bechtel
- Boeing
- Brutoco Engineering
- CH2M Hill
- Clark Construction
- DMJM
- Fluor
- General Construction
- Griffith Company
- Hensel Phelps Construction
- Kenny Construction
- Kiewit
- Lockheed
- Malcolm Drilling
- McCarthy Brothers
- Mortenson
- Northrup
- OHL-Owens Lake
- Pankow Builders
- PCL
- Peterson Chase Construction
- Shaw
- Skanska U.S.A.
- Swinerton Builders
GENERAL CONTRACTORS
- Traylor Pacific
- Turner Construction
- Tutor Perini
- Tutor-Saliba
- URS
- Walsh Group
- Webcor Builders
- Whiting Turner
SUBCONTRACTORS
- ACCO
- Bergelectric
- Critchfield Mechanical
- Dynaelectric
- Faith Technologies
- MC Dean
- Pierce & Associates
- Poole & Kent
- Singleton Electric
- Southland Industries
- T.A. Beach
- Truland Electrical
- Tyler Mechanical
- University Mechanical
GOVERNMENT AGENCIES
- Army Corp of Engineers
- Bureau of Reclamation
- Coast Guard
- Department of the Interior
- NASA
- National Park Services
- U.S. Army
- U.S. Navy
CA UTILITIES
- Los Angeles Dept of Water and Power (LADWP)
- Southern California Edison (SCE)
- San Diego Gas and Electric (SDG&E)
- Pacific Gas and Electric (PG&E)