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Ninth Technical Revision(TR09)to Permit M-1973-021,Holcim-WCR,Inc.Morrison Quarry <br /> Quarry for stockpiling. The average haul distance from the South Quarry to the Central Quarry <br /> stockpile area is 0.25 miles and 1.3 million yd3 will be generated. Based on the current average <br /> mining production of 10,000 tons/day (8,333 yd3/day), assuming 7 days per week of operation <br /> and 12 hour work days, it is assumed that drilling, blasting, and stockpiling will take up to 160 <br /> days to complete. <br /> Item 2.2 Mined Area Earthwork: Fill and Compaction <br /> The average haul distance for the Satellite South Pit from the Central Quarry stockpile area is 0.25 <br /> miles. Material will be loaded from the stockpile area using two front-end wheel loaders (Caterpillar <br /> 992 or equivalent) and transported to the Satellite South Pit using four rigid 100-ton haul truck <br /> (Caterpillar 777 or equivalent). All fill material will be placed and compacted using a two CAT D9 <br /> bulldozer as follows: <br /> • Placed in loose, horizontal lifts not to exceed 30-inches thick, assuming maximum rock sizes are <br /> limited to two-thirds of the lift thickness <br /> • Compacted to achieve greater than 80% of the maximum dry density determined in accordance <br /> with ASTM D698 <br /> • Placed in a manner that allows for a moisture content within 3% of optimum based on <br /> ASTM D698 <br /> Based on an estimated backfill requirement of 2,648,832 yd3, 7 days per week of operation and 12 <br /> hour work days, it is assumed that it will take up to 320 days, or 10.5 months, to complete fill and <br /> compaction activities. <br /> Item 2.3 Compaction Testing <br /> Throughout backfill and compaction activities, quality assurance and quality control testing shall be <br /> performed. Testing for in-place density and moisture content will be performed in accordance with <br /> ASTM D6938 and it is assumed this testing will be done once per lift. Costs for QA/QC testing <br /> assume a unit rate for each lift for reclamation of Satellite South Pit. For purposes of cost estimating <br /> it is assumed up to 48 days (based on 48 anticipated lifts)will be needed. <br /> Item 3.0 Dewatering <br /> During backfill operations, groundwater and surface water will be collected in sumps constructed <br /> within the pit where water will collect and be pumped using an electric dewatering pump to Outfall <br /> 006 for discharge. For purposes of cost estimating it is assumed up to 11 months of dewatering will <br /> be needed. <br /> October 2023 1 12 <br />