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out ground as part of reclamation, stored in the stockpile area, or be sold as fill. Details on <br /> topsoil and overburden quantities and material balance can be found in Table D-3 and Table E- <br /> 3. <br /> 3. Mining Sequence <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 four feet below ground level based <br /> on Western Slope's experience at their existing mine in the same aquifer, to the southeast <br /> (Grand River Park). Since groundwater will be exposed/encountered during mining, the entire <br /> pit will be dewatered using a pump. Details regarding this dewatering can be found in 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. Most of this area will be within the lake area. A <br /> maximum of 11 acres of disturbed ground requiring topsoiling will be active at any given 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 /> A discussion on water rights for groundwater exposure can be found in Exhibit G. Prior to the <br /> exposure of any groundwater, the permittee will provide the Division with a copy of the approved <br /> gravel well permit and any associated water supply plan. <br /> North Hangs <br /> December 2024 D'2 Lewicki&Associates <br />