Pine Mountain Lake Dredging Project Moffatt & Nichol Project Engineers Cooper Crane & Rigging, Inc. Contractor The Right Contractor Adaptability Communication
Project Need: Improve Channel Flow & Water Quality Project Need: Restore Navigable Depth
Disposal Area Project Layout
REGULATORY Required Studies, Reports and Testing Standard Requirements $ Sediment Quality & Sources Biological Water Quality Vegetation/ Habitat CH 3 Hg +
Hydraulic Disposal REGULATORY Construction Conditions Thin Layer Placement to aid benthic recovery Construction Windows: Nov 1 – Mar 31 Placement within 10’ of lake bottom Diffuser at end of discharge pipe Silt Curtain (if needed)
CONSTRUCTION CHALLENGES Mobilization New Priest Grade
Toyo Portable Barge Toyo Pump CONSTRUCTION CHALLENGES Toyo Portable Barge
Excavator Portable Barge Material Handling Portable Barge CONSTRUCTION CHALLENGES Excavator Portable Barge
“Mechanical-Hydraulic” Disposal Hydraulic Disposal CONSTRUCTION CHALLENGES Material Disposal Portable Barge
CONSTRUCTION CHALLENGES Varying Material
CONSTRUCTION CHALLENGES Weather
THE CREW