Bull Lake Dam - Spillway Modifications
The principal of work include removal of water; ************ and improving ********* access roads to dam site; and grubbing new site; ************ ********* ********* upstream of dam across new ********** excavating for ************ of new ; placing and compacting zoned fill under footprint; ************ HDPE pipe underdrain drain system; installing secant pile cutoff wall; ************ crest structure including labyrinth weir with small slide gate mounted on weir wall; ************ stilling basin and chute; ************ embankment sections and backfill around new ; placing riprap downstream and upstream of new ; excavating discharge channel from new stilling basin to river channel; removing ********* ********* upstream at the new alignment and placing new sections of parapet wall and curb; ************ new sediment traps and weirs at the existing toe drain outfall; jack existing bridge truss upward and moving it southward and onto the dam crest near the new ; refurbishing and repairing damage to the relocated bridge truss; placing existing bridge truss on the new crest and casting a new deck on the bridge; removing portions of the existing walls and parapet wall upstream of dam crest and installing soil nail walls to maintain stability; ************ a upstream of the dam at the existing ********** removing and disposing of existing radial gates; saw cutting full width of existing chute, removing concrete in upper chute and c...
