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cmcCONTINENTAL MATERIALS CORPORATION <br /> Moisture conditioning (based on standard proctor results) and truck and bulldozer traffic are <br /> expected to provide sufficient compaction of the fill material to achieve at least 90% standard <br /> proctor density. The compaction method specification of traversing the material at least twice <br /> with a haul truck or bulldozer will be utilized for the duration of the project; the method specification <br /> will be confirmed near the start of reclamation operations by testing compacted fill. Additional <br /> compaction testing will be performed throughout the reclamation process as new borrow sources <br /> are utilized. Each lift will be limited to less than three (3) feet in thickness to promote compaction. <br /> Granite from the upper highwalls will be bulldozed over the existing slope. These slopes achieve <br /> the required factor of safety and eliminate nearly all of the existing highwall. <br /> Monitoring <br /> CMC proposes to monitor the slope conditions starting after each lift is completed and continuing <br /> for at least one-year following the commencement of grading operations. The need for additional <br /> monitoring will be evaluated following the completion of the monitoring. Data will be collected from <br /> within the slide area and from adjacent areas where no movements have occurred. Slope <br /> monitoring will include visual inspections of the slopes and benches for signs of instability such <br /> as seeps, springs, erosion, cracking, slumping, or oversteepened slopes. Daily inspections will <br /> occur during construction to protect worker safety. The inspection frequency will be reducedto <br /> monthly inspections following the completion of construction. The slopes will be inspected using <br /> a drone on a monthly basis. CMC also proposes to continue monitoring the slope using the robotic <br /> prism monitoring system during grading operations and for the one-year (or longer if necessary) <br /> monitoring period. This system operates on a continuous basis. The monitoring methods and <br /> frequency are listed in Table D-1. CMC will submit monitoring summary reports on a quarterly <br /> basis until one-year following the completion of grading operations when the monitoring methods <br /> and frequency will be revised based on the results. <br /> Table D-1 <br /> Monitoring Frequency <br /> Monitoring Type Frequency <br /> Visual inspection Daily/Monthly <br /> Robotic theodolite/prism Continuous <br /> Drone inspection Monthly <br /> CMC proposes these slope stability monitoring evaluation criteria: <br /> • Generally, there should be no signs of instability, such as seeps, springs, erosion, <br /> cracking, slumping, or oversteepened slopes. <br /> Pikeview Quarry Amendment 4 <br /> D-4 <br />