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CIN CONTINENTAL 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. A water truck will be used to increase the moisture content of the fill as it is placed <br /> and compacted. The amount of water added will depend on recent precipitation, wind, and other <br /> variables, and the compaction monitoring will be used to demonstrate that the required <br /> compaction and density was achieved. The compaction method specification of traversing the <br /> material at least twice with a haul truck or bulldozer will be utilized for the duration of the project; <br /> the method specification will be confirmed near the start of reclamation operations by testing <br /> compacted fill. CIVIC will demonstrate that compaction is being achieved by testing the fill density <br /> at a rate of at least once per 5,000 cubic yards so that there will be two tests per day on average. <br /> Additional compaction testing will be performed throughout the reclamation process as new <br /> borrow sources are utilized. Records of the fill testing shall be kept on site and made available to <br /> DRMS for inspection. The tests results will also be included in monthly monitoring reports (see <br /> below) Each lift will be limited to less than one-foot in thickness to promote compaction. Granite <br /> materials that are pushed by dozer from the top of the quarry will be a downhill push to move bulk <br /> general fill (granite). Once the material is generally located to its final position a second dozer <br /> push will distribute the granite parallel to the quarry face in an appropriate lift thickness. Once the <br /> loose fill is watered compaction efforts will complete the placement in a level fashion that is cross <br /> hill and horizontal. These slopes achieve the required factor of safety and eliminate nearly all of <br /> 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 reduced to <br /> monthly inspections following the completion of construction. The slopes will be inspected using <br /> a drone on a monthly basis. CIVIC 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. CIVIC will submit monitoring summary reports on a monthly <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. The monthly monitoring summary; this <br /> summary will include construction quality assurance test results, geotechnical monitoring results, <br /> construction volumes, and drone survey results. <br /> Pikeview Quarry Amendment 4 <br /> D-4 <br />