Water Quality Control on CDOT Projects in the Chatfield Basin - - PowerPoint PPT Presentation
Water Quality Control on CDOT Projects in the Chatfield Basin CDOT OVERSITE Intense monitoring and inspection conducted during construction Daily sediment and erosion control inspections Bi-Weekly inspections Monthly audits
Intense monitoring and inspection
Daily sediment and erosion control inspections Bi-Weekly inspections Monthly audits
After construction is completed,
Monthly inspections Inspections continue until project reaches
I-25 - Meadows to Fifth US 85 – Sedalia Extensions
US 85 Titan to Cook Ranch I-25 Douglas Lane to 5th St.
1 mile of reconstruction Pilot Project where the Contractor holds the
Cross culverts under US 85 with median inlets Extension of 6 ft x 6 ft CBC
Slope roughening Retention ponds Tracking pads Blankets Erosion logs Silt Fence Rock checks
5 Water Quality Ponds Drainage ditches to water quality ponds Utilizing an existing pond Riprap
Slopes Roughened as Work Progresses
Interim Excavations Capture Surface Runoff and Sediment in retention ponds
Tracking Pads for Vehicles Leaving Site
Riprap Placed in Areas of Concentrated Flows as Permanent BMP
CBC Extended and Temporary BMP Installed
Slopes Stabilized with Topsoil, Soil Amendment, Seed and Mulch.
Included reconstruction of I-25/Plum Creek
Most construction is complete All water quality structures are built and in
Final seeding and planting to be done April/May
Pipe work for a water quality pond planned for
Pond to be located East of I-25 and East of the
Pond to be constructed by CDOT Maintenance in
Sediment Pond at the NE Quadrant of Interchange
Sediment Pond at the SW Quadrant
Outlet Structure West of I-25 at the Southbound on-ramp
Detention Pond that drains into Plum Creek
Riprap along Plum Creek under the I-25 Bridge
I-25 Lincoln to County Line I-25 at Happy Canyon US 85 Cook Ranch to Louviers