R2 HQ Parking Lot Drainage Project

2026-11-03

Background , Overview and GoalsCDOT Region 2 ( R2 ) has been experiencing some ponding in the employee parking lot after storm events . This has resulted in some icy areas in the winter resulting in some slips and falls . R2 has surveyed the parking lot in this area and has developed a storm drainage system design to help eliminate this issue . The contractor shall complete all work as detailed in the R2 HQ Parking Lot Drainage Removals Plan Sheet . This shall include saw cutting to a neat vertical face areas where removal of concrete , removal of asphalt mat , and removal of curb and gutter are called out in the plans . All removal materials including but not limited to the removal of concrete , removal of asphalt mat , removal of curb and gutter , and unclassified excavation shall be disposed of by the contractor . The contractor shall remove the existing irrigation valve box and cap off all active lines until valve box can be relocated to location noted on the R2 HQ Parking Lot Drainage Plan Sheet . The contractor shall complete all work as detailed in the R2 HQ Parking Lot Drainage Plan Sheet . This shall include providing and installing all Concrete Pavement ( Class P ), Wire Mesh , Hot Mix Asphalt ( Patching ), Aggregate Base Course ( Class 6 ), Structural Backfill ( Flow - Fill ), Loose Structural Backfill ( Class 1 ), Type 13 Inlet , 15 ” Flexible HDPE pipe , and 15 ” x 15 ” x 8 ” Wye . The Contractor shall also reinstall irrigation valve box as noted on the plans . This work shall include all necessary pipes , fittings , wire , or any other products required to relocate irrigation valve box from its current location to its proposed location . This work shall be included in the cost of the work and will not be paid for separately . See more

Colorado

2026-04-28