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Rifle Gravel Pit#1 January 2021 (Amendment to File No. M-2020-008) <br /> O Dewsterme Well Active 0urirKSUge 1 Mlmmg <br /> Estimated Drawdovm of Groundwater Levels Following I Year of Continuom Dawaterinq•3%WII%at ICf%/WVII <br /> Figure 10. Estimated Drawdown of Groundwater Levels Following 1 year of Continuous <br /> Dewatering (estimated 3 wells) <br /> 5.2.2 Mining Preparation (Phase 2) <br /> This phase of the project will include mobilization of the heavy equipment, work trailer, <br /> screening and wash equipment, and major site grading to prepare the site for mining <br /> activities. <br /> 5.2.2.1 Topsoil and Overburden Handling <br /> This phase of the project will include additional minor site grading and vegetation removal, <br /> as needed. Equipment for this phase will include, but not be limited to, a bulldozer, track- <br /> hoe, and a 35-ton haul truck. <br /> 5.2.2.2 Water Handling and Dewatering <br /> Phase 1 dewatering activities will continue throughout this phase. No additional water <br /> diversions nor impoundments will be required during this phase. <br /> 19 <br />