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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; therefore, a Substitute Water Supply Plan will not <br />be necessary. <br />The John Martin Reservoir is the only natural water resource in the area, <br />located southwest of the proposed site. The State Engineer's Office AQUAMAP <br />database was accessed for area water structures. Both water structures on the <br />property are permitted to the property owner, Verhoeff Farms. A 25 foot setback will <br />be maintained from the water structure. <br />The proposed operation will develop a pit that will not discharge stormwater <br />or process water drainage. In the event precipitation pooling in the pit does not <br />percolate within 72 hours, a discharge permit will be obtained from CDPHE Water <br />Quality Control Division. <br />Runoff occurs as overland flow to natural drainage ravines in the vicinity. <br />Stormwater best management practices such as waddles, straw bales, and perimeter <br />berms will be placed to effectively manage stormwater. Historic flow will be <br />maintained during mining. <br />Consumptive use of water may occur as dust suppression on the haul road <br />and working face. The operator will purchase the necessary volume of water from <br />an appropriate supplier. The amount required for dust suppression is undetermined <br />at this time. <br />The permittee will complete a stormwater management plan and file a <br />stormwater discharge application with Colorado Department of Public Health and <br />Environment, Water Quality Division. Diversionary berms and impoundments will be <br />constructed as recommended by the Water Quality Division. <br />E:3 <br />