| Ascent Strategies, LLC | AMERICAN CHEMISTRY COUNCIL | Monitoring | 2018-2019 |
| Aloria Governmental Affairs | AUDUBON ROCKIES | Supporting | 2018-2019 |
| IRWIN, LESLIE | BOULDER COUNTY | Supporting | 2018-2019 |
| RUZZIN, MARK | BOULDER COUNTY | Supporting | 2018-2019 |
| Laws, Summer | Boulder County | Supporting | 2018-2019 |
| Twigg, George | Boulder County | Supporting | 2018-2019 |
| Valdez Public Affairs, LLC | CITY OF THORNTON | Monitoring | 2018-2019 |
| Colorado Municipal League | COLORADO MUNICIPAL LEAGUE | Monitoring | 2018-2019 |
| Brandeberry McKenna Public Affairs | City and County of Denver | Supporting | 2018-2019 |
| Headwaters Strategies | City of Boulder | Supporting | 2018-2019 |
| SEADER, SANDRA L. | City of Longmont | Supporting | 2018-2019 |
| Lombard & Clayton, Inc. | Colorado Counties Inc. | Opposing | 2018-2019 |
| DeLange, Brandy | Colorado Municipal League | Monitoring | 2018-2019 |
| Mendez, Barkis and Associates | Colorado Sierra Club | Supporting | 2018-2019 |
| Belgard, Katie A | Conservation Colorado | Supporting | 2018-2019 |
| Myers, Amelia A | Conservation Colorado | Supporting | 2018-2019 |
| Siegel Long Public Affairs, LLC | Conservation Colorado | Supporting | 2018-2019 |
| Siegel Public Affairs, LLC | Conservation Colorado | Supporting | 2018-2019 |
| Stauffer, Heather LaVon | Denver Water | Monitoring | 2018-2019 |
| Attwood Public Affairs | Douglas County | Opposing | 2018-2019 |
| BALCEROVICH, STEVE | Douglas County Colorado/Attwood Associates | Opposing | 2018-2019 |
| Allied Agenda, LLC | League of Women Voters of Colorado | Supporting | 2018-2019 |
| Schultz Public Affairs, LLC | Recycle Colorado | Supporting | 2018-2019 |
| Sewald Hanfling Public Affairs | Republic Services | Amending | 2018-2019 |
| Sewald Hanfling Public Affairs | Republic Services | Monitoring | 2018-2019 |
| Sewald Hanfling Public Affairs | Republic Services, Inc. | Opposing | 2018-2019 |
| Valdez Public Affairs LLC. | Valdez Public Affairs LLC | Monitoring | 2018-2019 |
| Fulcrum Group US | Waste Management | Monitoring | 2018-2019 |