Below is a current list of registrants.
| Full Name | Company |
|---|---|
| Josh Rice | Woody Creek Engineering, LLC |
| Taylor Reeves | Ware Malcomb |
| Lanae Raymond | SEMSWA |
| Erika Rasmussen | Town of Mead |
| Derek Rapp | Peak Stormwater Engineering, LLC |
| Kayla Ranney | HDR |
| Katie Radavich | SGM |
| Al Quintana | City of Thornton |
| Mick Pyle | Bowman Construction Supply Inc. |
| Tyler Purvis | City of Brush! |
| Brian Prunty | City of Rifle |
| Jamie Prochno | USACE Omaha District |
| Joel Price | Murraysmith, Inc. |
| Erin Powers | City of Colorado Springs, Water Resources Engineering |
| Alex Powers | Contech Engineered Solutions LLC |
| Mary Powell | CORVUS Environmental |
| Seth Plas | City of Westminster |
| Rachelle Plas | City of Thornton |
| Holly Piza | Urban Drainage and Flood Control District |
| Kimberley Pirri | AECOM |
| Jon Pink | AECOM/COMPASS |
| Jenna Phillips | Muller Engineering Company |
| Craig Perl | City of Aurora |
| Walt Pennington | Respec |
| Riley Pennington | City of Arvada |
| Susan Pearson | Town of Silverthorne |
| Sam Pavone | Denver Infrastructure Project Management |
| Chris Pauley | Anderson Consulting Engineers, Inc. |
| Thuy Patton | Colorado Water Conservation Board |
| Heather Pasch | AECOM |
| Greg Panza | HR Green, inc. |
| Charlie Pajares | Jacobs |
| Alan Pagan-Rivera | Calibre Engineering |
| Patrick Padden | Padden Permaculture |
| Candice Owen | City of Boulder |
| Bryan Ortiz | City of Boulder |
| John Oliver | Wilson & Company, Inc. |
| Deb Ohlinger | Olsson Associates |
| Mark Nyhoff | Muller Engineering Company |
| LeAndra Nelson | Kiewit Infrastructure Engineers |
| Jon Nelson | SEMSWA |
| Ela Nelson | City of Longmont |
| Caleb Nelson | Calibre Engineering |
| Jerry Naranjo | Naranjo Civil Constructors, Inc. |
| Nadia Naji | Muller Engineering Company |
| William Musser | Tetra Tech |
| PJ Murray | City of Aspen |
| Mark Murphy | The Sanitas Group |
| Lilly Murphy | Calibre Engineering |
| Greg Murphy | Calibre Engineering |