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CM0001790 <br />SCOPE OF WORK • <br />NO. 1 DAM IMPOUNDMENT <br />CLIMAX MINE - CLIMAX, COLORADO <br />Contractor's scope of work for the construction of the No. 1 Dam Impoundment at the Climax Mine <br />in Climax, Colorado shall include implementation of the following items: <br />• Mobilization; <br />• Installation of temporary surface water controls around all work areas; <br />• Access/haul road construction/upgrade in the areas of the specified work; <br />• Clearing/grubbing as required to access all site work areas; <br />• Placement of Chalk Mountain Reservoir's discharge pipeline and associated construction; <br />• Development and reclamation of the on-site borrow area(s); <br />• Excavation/hauling of unsuitable foundation materials to an on-site disposal area; <br />• Excavation/stockpiling of suitable foundation materials for reuse in dam construction; <br />• Dewatering of the dam foundation work area; <br />• Placement of excavation embankment controls, as necessary, to minimize sloughing of <br />embankment materials and control placement of foundation soils; <br />• Excavation/hauling/placement of the dam foundation materials; <br />• Cutoff wall trench excavation and installation of a low-permeability cut-off wall; <br />• Soil-bentonite amendment and placement of the dam inner core material; <br />• Placement of the dam outer core random fill material; <br />• Placement of the dam rockfill material; <br />• Placement of riprap on the dam faces; <br />• Construction of a concrete spillway crest and riprap spillway channels on the dam face; <br />• Installation of concrete headwalls and a conveyance pipe through the dam; <br />• Restoration of all areas disturbed by construction to pre-mobilization grades; <br />• Revegetation of all areas above the dam crest elevation disturbed by construction; and <br />• Demobilization. <br />Contractor's general requirements and a complete description of the requirements to implement each <br />of the above listed items will be detailed in the final `No. 1 Dam Impoundment Technical <br />Specifications and Drawings' to be included as an exhibit to the final bid package to be issued for <br />construction. Contractor shall sequence the above work items to complete all project work in the <br />one construction season. • <br />U-WRIMAMCLuinXMOL\CLUdA"IC4 sownoc[Invs7]