Below is a current list of registrants.
| Full Name | Company |
|---|---|
| Jim Curry | ADS |
| Brian Rustia | ADS/BaySaver |
| evan fischgrund | Advanced Drainage Systems |
| Eliot Wong | Advanced Water Resources Engineering |
| Tom Fuentes | AECOM |
| Heather Pasch | AECOM |
| Tim Benenati | AECOM |
| Kevin Klimek | AECOM |
| Remmet deGroot | AECOM |
| Dave Center | AECOM |
| Rigel Rucker | AECOM |
| Kimberley Pirri | AECOM |
| Laura Kindt | AECOM |
| Geoffrey Uhlemann | AECOM |
| Griffin Cullen | AECOM |
| John Sikora | AECOM |
| Isaac Allen | AECOM |
| Mary Gilliland | AECOM |
| Joseph Roerkohl | AECOM |
| Jon Pink | AECOM/COMPASS |
| Alan Taylor | Alan Taylor Consulting, LLC |
| Brad Anderson | Anderson Consulting Engineers, Inc. |
| Jamis Darrow | Anderson Consulting Engineers, Inc. |
| Greg Koch | Anderson Consulting Engineers, Inc. |
| Chris Pauley | Anderson Consulting Engineers, Inc. |
| Daniel Knapp | Anthem Structural Engineering |
| Mark Miller | AquaShield, Inc. |
| John Santos | AquaShield, Inc. |
| Suping (Sue) Liu | Arapahoe County |
| Sarah White | Arapahoe County |
| Kurtis Cotten | Arapahoe County |
| Bryan Gustafson | Ascent Geomatics Solutions |
| Si Na Chau | Ascent Geomatics Solutions |
| Christine Sveum | Atwell |
| Dusty Robinson | Ayres Associates |
| Anthony Alvarado | Ayres Associates |
| Matt Simpson | Ayres Associates |
| Dale Mathison | Ayres Associates |
| Matthew Hickox | Ayres Associates |
| Glenn Van Horn | Basalite Concrete Products, LLC |
| Laddie Fromelius | Bio Clean, A Forterra Company |
| Cole Bedford | Bohannan Huston, Inc. |
| Craig Hoover | Bohannan Huston, Inc. |
| Olin Brown | Bohannan Huston, Inc. |
| Erin Cooper | Boulder County |
| Olivia Cecil | Boulder County Transportation |
| Mick Pyle | Bowman Construction Supply Inc. |
| Becky Brock | Brierley Associates |
| Catherine Kornbrust | BT Construction, Inc. |
| Chris Knott | BT Construction, Inc. |