Specifications include, but are not limited to: Project Phase 1 consists of improvements to the Holman Road Crossing, channel construction, energy dissipation features relocation and lowering of utilities & installation of fencing. Holman Road Crossing will consist of (5) 10’x10’ double opening box culverts & wingwalls underneath Holman Road. Channel construction will include 28,550 CY of earthwork to be excavated and stored within the designated deposition area, with top soil stripped and stockpiled to cap deposition area at the end of earthwork activity. Energy dissipation features will include 292 CY of soil cement and 170 CY of wire enclosed rip rap to construct a soil cement pad on upstream side of box culverts and riprap dissipation on the downstream side. Utility work includes relocation of 466 LF of force main, installation of 4 new sewer manholes, and lowering of 520 LF of ductile iron waterline. Fencing improvements will include removal of 310 LF of existing fencing and installation of 1,816 LF of new 4 strand wire fencing. Phase 2A consists of channel construction, energy dissipation & access features, maintenance road construction, installation of fencing and lowering of existing agricultural waterlines. Channel construction will included 244,000 CY of earthwork to be excavated and stored within the designated deposition area, with top soil stripped and stockpiled to cap deposition area at the end of earthwork activity, approximately 15,000 CY of excavation off site to waste, and 34,600 CY of excavation to embankment to construct channel. Energy dissipation & access features will include 5,342 CY of soil cement and 1200 CY of wire enclosed rip rap to construct (4) 5’ tall soil cement drop structure consisting of 1’ stair stepped lifts, and soil cement maintenance ramps on each side of the channel for every section in between drops. Additional energy dissipation will be constructed with a rip rap erosion dissipation pad at the entrance to Isaacks Lake. Maintenance road construction will consist of 15,500 SY of 4” base course in 12’ width along both sides of the channel. Installation of fencing will include installation of 9,450 LF of new 4 strand wire fencing along both sides of the channel. 720 LF of existing 1 ¼” black poly agricultural water lines will need to be lowered underneath channel bottom and encased within a 4” HDPE Gas line sleeve and connected to existing lines on either end of the channel.
