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Rifle Gravel Pit#? Augu,# 2021 <br /> See Exhibit D1, Figure 10 and Exhibit D3 and D4, Figures 12 and 13 for a cross-section <br /> of the typical mine strata and additional information regarding the topsoil and overburden <br /> handling locations. Note overburden materials across the site vary. The boring holes <br /> indicate the overburden depth can vary from 5.5 feet to 6 feet. Attachment C includes the <br /> typical cross-sections at the boring holes. <br /> 5.2.2.2 Water Diversions and Impoundments <br /> Scott Contracting, Inc. will install the required portable Spill Prevention, Control, and <br /> Countermeasure secondary containment during Phase 2 as needed. <br /> 5.2.2.3 Water Handling and Dewatering <br /> Phase 1 dewatering activities will continue throughout this phase. Stormwater Management <br /> BMPs will be installed during Phase 1. <br /> w�rawrrNwrrw�. <br /> (} Dtwatt*nY ,,. �Cti7CtlurifySti�l 1 M:n.nt <br /> E.timatwd Orawdawn of Groundwater L.vwk following 1 Ywarof Cantinuou- Dwwatwrins•3 WWII%at Ichf.W11 <br /> Figure 14. Estimated Drawdown of Groundwater Levels Following 1 year of Continuous <br /> Dewatering (estimated 3 wells). <br /> 25 <br />