CSU Homestake Arkansas River Diversion

July update:  The crew is working along with our concrete and utility subcontractors.  Our utility subcontractor has mobilized on site and have commenced with the installation of the 66” pipeline.  Our concrete subcontractor is currently casting one of the concrete vaults on site.

Description of Project: This project generally includes demolition and removal of an existing raw water intake, pipeline, and rock fill diversion dam with articulated concrete bock armoring, and construction of a reinforced concrete intake structure, steel pipeline, concrete diversion weir, and grouted boulder spillway, fish way, and boat chute.

Project Major Activities:

  • Mobilization
  • Surveying
  • Erosion and Sediment Control
    • Construction Entrance
  • Access & Restoration
    • Excavation for bridge abutments
    • Structural Backfill
    • Right bank access road grading
    • Right bank base rock and gravel
  • Dewatering, Diversion, Care of Water
    • Phase 1 Super Sack
    • Phase 1 Labor
    • Phase 2 Super Sacks
    • Phase 2 Labor
    • Pumping at weir and I
  • Demolition
    • Removal of articulated concrete and landfill
    • Removal of existing intake structure and landfill
    • Removal of Concrete Pipe and landfill
  • Upstream Riprap
    • Filter Blanket – 4” X ¾”
  • Weir
    • Excavation and storage of material
    • Weir Subgrade
    • Cutoff Trench Mass concrete
    • Weir slab
    • Weir Wall
    • Silica Fume Concrete
  • Spillway & Fish way
    • Excavation, Haul Off and Dispose
    • Riprap Filter Blanket
    • Grouted Riprap
    • Fish way Grouted Riprap
  • Divide Wall & Boater Channel
    • Process Existing Material
    • Riprap Filter Blanket
    • Grouted Riprap
    • Divide Wall Grouted Stone
    • Boat Chute Concrete
  • Intake and Pipeline
    • Excavation, Haul Off and disposal
    • Structural Backfill
    • Trash Rack
  • Access & Restoration
    • Left Bank Access Road Grading
    • Left Bank Base Rock and Gravel
    • Revegetation
  • Intake and Pipeline
    • Gate Slot Liners
    • Stainless Steel Gate Slot Liners
    • Bilco Hatches
    • Intake Slide Gates
    • Junction Box Slide Gates
    • 48” Diameter Sleeve Couplings
    • 66” Diameter Sleeve Couplings
    • 8” Diameter Gate Valves
    • 48” Diameter Manholes
    • 8” Diameter HDPE Pipe Fittings
    • 12” Diameter HDPE Pipe
    • 4” Diameter Gate Valves & Stem Risers
    • 4” Diameter HDPE Pipe Fittings
    • Valve Vault Excavation
    • Valve Vault Structural Backfill
    • Valve Vault Concrete Slab
    • Valve Vault Concrete Walls
    • Valve Vault Precast Lid
    • 66” Steel Pipe