1) AHIP

2) Cleaner Iowa, Inc.

3) Conlin Properties

4) Federation of Iowa Insurers

5) FFF Enterprises, Inc.

6) Google LLC and its Affiliates

7) Holistic Alternative Recovery Trust, Inc.

8) Iowa Association of Water Agencies

9) Iowa Chapter, American Institute of Architects

10) Iowa Economic Alliance

11) Iowa League of Cities

12) Iowa Recycling Association

13) Iowa Select Farms, L.L.P.

14) Lederman Bonding Company

15) Lightstar

16) Lutheran Family Services of Nebraska

17) Maverik, Inc.

18) Municipal Fire & Police Retirement System of Iowa (MFPRSI)

19) Nationwide Mutual Ins. Co.

20) Planet Care Biofilters

21) Principal Financial Group

22) Sun Valley Iowa Lake Association

23) The Philanthropy Roundtable