1) AZ SCHOOL RISK RETENTION TRUST

2) BUCKEYE WATER CONSERVATION & DRAINAGE DISTRICT

3) CALPINE ENERGY SOLUTIONS

4) CAPITAL POWER

5) DRAKE CEMENT, LLC

6) EDF RENEWABLES

7) ELECTRICAL DISTRICT NO. 8

8) FLORENCE COPPER

9) FREEPORT-MCMORAN INC.

10) H V W P MANAGEMENT LLC

11) INTERWEST ENERGY ALLIANCE

12) INVENERGY, LLC

13) KAIROS HEALTH ARIZONA, INC.

14) MOHAVE VALLEY IRRIGATION AND DRAINAGE DISTRICT

15) NATIONAL KIDNEY FOUNDATION OF ARIZONA

16) NEXTERA ENERGY RESOURCES, LLC

17) OPTUM, INC.

18) PALOMA IRRIGATION AND DRAINAGE DISTRICT

19) PASCUA YAQUI TRIBE

20) PRIORITY AMBULANCE, LLC

21) ROCKET LIMITED PARTNERSHIP

22) ROOSEVELT WATER CONSERVATION DISTRICT

23) SOUTHERN ARIZONA HOMEBUILDERS ASSN

24) THE ARIZONA SCHOOL ALLIANCE FOR WORKERS COMPENSATION

25) UNITED HEALTHCARE COMMUNITY PLAN

26) UNITED HEALTHCARE SERVICES, INC.

27) WALMART INC.

28) WATER ASSET MANAGEMENT