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<br /> <br />1 <br /> <br /> <br />1 <br />1 <br /> <br />1 <br />1 <br />Project Water Requirements <br />The proposed Honing operation will consume water from plant operations, lake evaporation <br />from exposed groundwater, and moisture loss in materials transported from the site. An <br />estimate of the water consumption from the proposed operation during and after mining and <br />reclamation is completed is as follows: <br />Losses During Losses After Mining <br />Mining Operations and Reclamation is <br />Water Consumption Description in Ac Ft ComQeted in Ac.Ft. <br />Silt Pond Evaporation 39.1 0.0 <br />Haul Road Dust Suppression 2.0 0.0 <br />Moisture Loss in Materials 44.2 0.0 <br />TOTAL CONSUMED WATER 85.3 0.0 <br />The water losses will be accounted for in an approved Substitute Water Supply Plan (SWSP) <br />submitted to the State Engineer's office. Actual losses may vary from the estimates in the <br />above table. A Substitute Water Supply Plan (SWSP) was submitted to the State Engineers <br />Office on March 24, 1999 for review. CAMAS will demonstrate written compliance to the <br />DMG with all permitting requirements of the Office of State Engineer (OSE) prior to <br />exposure of groundwater. <br />' Water Quality and Stormwater Management and Dewatering Controls <br />The proposed mining operation will not adversely impact water quality to either groundwater <br />' or surface water. The proposed mining operation will control dewatering discharges from the <br />site under the controls of the Colorado Department of Health through an NPDES permit <br />(CCP#11). All water from dewatering operations is typically routed through small settling <br />ponds constructed in the bottom of the excavation for removal of sediment. Additional <br />settling capacity maybe constructed at grade depending on the area being worked. The size <br />ofthe ponds depends upon the inflow rate and is based on TSS limits set by the permit. The <br />location of the settling ponds will change as the mining operation moves. Typically, several <br />discharge locations will be specified in the permit to allow for relocation <br />' Control of sediment from stockpiles and disturbed areas will be accomplished through site <br />grading. The areas stripped and disturbed by mining will allow for proper location of <br />' stockpiles that allow for temporary collection of stormwater runoff from stockpiles. This <br />water will either percolate into the groundwater table or in cases of excessive precipitation <br />will be routed into the excavation for temporary detention and discharge through dewatering <br />pumps. Other alternatives may involve grade detention ponds and gravity discharge. An <br />Erosion Control Plan will be prepared for review and approval by the County (CCP#10). <br />' 6 <br /> <br />