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EXHIBIT G <br /> • <br /> 6.0 WATER INFORMATION <br /> The north property line is bounded by the St. Vrain Creek. The <br /> property is bisected by the Last Chance Ditch. The mining <br /> operation will maintain a minimum 150 feet setback from the St. <br /> Vrain Creek thalweg and a 50 feet setback from the Last Chance <br /> Ditch so that site activities will not structurally impact the side <br /> slopes or significantly increase seepage from either conveyance <br /> feature. Other water features on the site include three ponds as <br /> shown on the Pre-Mining Plan. <br /> Most of the site lies within the 100 year floodplain. The southern <br /> portion of the site which is not in the floodplain will be used for <br /> stockpiling topsoil. Fuel stored on site and production facilities <br /> will also be kept in the area outside of the 100 year floodplain. <br /> The mining plan entails dewatering of the site during the mining <br /> phase. After mining is completed four (4 ) lakes will remain on the <br /> site due to the high water table in the vicinity. <br /> Presently on-site surface drainage naturally flows into the St. <br /> Vrain Creek. The grading shown in the Mining Plan and Reclamation <br /> • Plan is designed to impound all on-site stormwater. <br /> 6.1 Dewatering Plan <br /> The mine site is in an area with a high water table and water will <br /> be exposed at the site due to sand and gravel mining. However the <br /> mining area will be dewatered with a dewatering trench around the <br /> perimeter of the pits. <br /> As mining progresses the groundwater table will be lowered in each <br /> mining phase by pumping to allow the aggregate to be mined under <br /> dry conditions. Only one mining phase will be dewatered at any one <br /> time. Sediment will be allowed to settle out in a sump area before <br /> the water is pumped from the pits. <br /> Water from phases 1 and 3 will be discharged into the Last Chance <br /> Ditch and water from phases 2 and 4 will be discharged into the St. <br /> Vrain Creek. Approval from the ditch company to pump water to the <br /> ditch will be obtained. An alternate plan of dewatering <br /> groundwater from mining phases 1 and 3, if permission is not <br /> received from the ditch company, will be to pump water to the ponds <br /> on property owned by Weld County that lie to the east of the <br /> subject site. <br /> A NPDES permit will be obtained for all discharges to the St. Vrain <br /> Creek prior to the commencement of mining operations. <br />