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4. Equipment <br /> Table D-1 shows the type of equipment that will be used for the operations of this site. Once <br /> operations are complete, all equipment will be removed from the site. <br /> Table D-1 -Typical Onsite Equipment <br /> Equipment Type Phase 1 Quantity <br /> Excavator 1 <br /> Bulldozer 1 <br /> Water Truck 1 <br /> On-highway Dump Varies with production <br /> Truck <br /> Road Grader 1(occasionally) <br /> Loader 1 <br /> A portable fuel tank will be set up in the mining area to supply equipment onsite. It will have full <br /> secondary containment. All equipment onsite will have onboard diesel tanks in full secondary <br /> containment. Full secondary containment has 110% of the volume of the tank that is in it. <br /> 5. General Mining Plan — Method of Mining <br /> Once topsoil and overburden are stripped from the site, the deposit will be mined using shovels <br /> or loaders and haul trucks. The groundwater table is roughly seven feet below ground level <br /> based on Western Slope's experience at their existing mine in the same aquifer, to the <br /> southeast (Grand River Park). Since groundwater will be exposed/encountered during mining, <br /> the entire pit will be dewatered using a pump. Details regarding this dewatering can be found in <br /> Exhibit G. <br /> Mining will progress in the dewatered pit areas as shown on Map C-2. All mining will be to final <br /> 2H:1V slopes on the perimeter. The active mining highwall will be mined to the halfway point of <br /> the final mining slope. This will allow the active mining highwall to be knocked down to the final <br /> mining slope with a dozer when mining is complete in an area. No more than 25 acres of total <br /> disturbance will take place at any time. <br /> Early mining will consist of mine operations on the north and south sides of the Bernudy Ditch <br /> with the ditch still in its pre-mining condition. Once the ditch has been moved into its new <br /> permanent route in a pipe, mining will commence through the ditch corridor. Prior to mining <br /> within 300 feet of the Colorado River, the permittee will submit a technical revision to the <br /> Division that includes the approved ditch reroute and designs for inflow/outflow structures along <br /> the Colorado River. <br /> North Hangs <br /> December 2024 D_3 El Lewicki&Associates <br />