1) CALIFORNIA STATE LABOR MANAGEMENT COOPERATION COMMITTEE FOR THE INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS AND THE NATIONAL ELECTRICAL CONTRACTORS ASSOCIATION

2) CALIFORNIA STATE PIPE TRADES COUNCIL

3) CALIFORNIA UNIONS FOR RELIABLE ENERGY

4) COMMUNICATIONS WORKERS OF AMERICA, DISTRICT 9

5) INTERNATIONAL ASSOCIATION OF PLUMBING AND MECHANICAL OFFICIALS

6) INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS, LOCAL 1245

7) INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS, LOCAL 465

8) INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS, LOCAL 47

9) INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS, LOCAL 659

10) UTILITY WORKERS UNION OF AMERICA, LOCAL 132

11) UTILITY WORKERS UNION OF AMERICA, LOCAL 246

12) UTILITY WORKERS UNION OF AMERICA, LOCAL 522

13) WESTERN STATES COUNCIL OF SHEET METAL WORKERS