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6.4.7 Exhibit G <br />Water Information <br />Mining is expected to have no impact on the prevailing hydrologic balance. <br />Groundwater will not be exposed and stormwater will not leave the site. The site will not <br />discharge stormwater or process water drainage. In the event precipitation does pool at the <br />site for greater than 72 hours, a discharge permit will be obtained from CDPHE Water Quality <br />Control Division <br />According to the Division of Water Resources HydroBase Data Viewer, groundwater at <br />the site is anticipated to be approximately 37-68 feet in depth. The mining operation will only <br />mine to a depth of 20 feet. <br />Runoff occurs as overland flow to natural drainage ravines in the vicinity. Stormwater <br />best management practices such as waddles, straw bales, and perimeter berms will be placed <br />to effectively manage stormwater. Historic flow will be maintained during mining. <br />Consumptive use of Water may occur as dust suppression on the haul road and affected <br />areas. Hard Rock Paving and Redi Mix will purchase the necessary volume of water from an <br />appropriate supplier. The amount required for this is undetermined at this time. <br />The permittee will complete a stormwater management plan. Diversionary berms and <br />impoundments will be constructed as recommended by the Water Quality Division.