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6.4.7 EXHIBIT G -Water Information <br /> The mining operation will be designed to not impact surface water or groundwater. It is expected that no <br /> groundwater will be encountered. Test pits dug to a depth of 18 feet have encountered no ground water <br /> over the last year. <br /> Surface runoff enters the Pit Area from the north through a 24-inch diameter culvert under County Road <br /> 550. This water will be diverted around the west side of the excavation pit using a berm and drainage <br /> swale then returned to sheet flow at existing grade. See Map 5. There will be a buffer of approximately <br /> 200 feet between the end of the drainage swale and Burns #2 Ditch. Erosion control measures will be <br /> implemented to halt any sediment transport from entering Burns#2 Ditch <br /> Overburden placed in the Spoils & Stockpile Area will be contoured to slopes less steep than 3HAV. The <br /> west side of the Spoils & Stockpile Area will be left at the approximate existing contour and a drainage <br /> swale will be shaped to allow any surface water to exit the Spoils & Stockpile Area at the historical <br /> location. Erosion control measures will be used in this swale to prevent erosion. <br /> The Processing Plant & Product Stockpile Area will need minimal re-grading as shown on Map 5. <br /> Drainage will not be concentrated and erosion control measures will be implemented as necessary <br /> The Applicant will apply for a permit for Stormwater Discharges Associated with Construction Activity from <br /> the Water Quality Control Division of the Colorado Department of Public Health & Environment. A Storm <br /> Water Management Plan (SWMP)will be prepared for this permit <br /> Water supply will be needed for three tasks One, approximately 0.4 acre-feet will be needed to irrigate <br /> the seed used to stabilize the topsoil stockpile. This water will be pumped from Burns #2 Ditch with <br /> permission of the landowner. Two, up to one acre-foot will be needed for dust suppression during each of <br /> the two years of mining operations. This water will be pumped directly from the Huerfano River at the <br /> County Road 560 crossing as permitted in Water Court Case No. 13CW3062. Three, approximately 8 <br /> acre-feet will be needed for irrigation during each of the first two years of the revegetation operations. The <br /> preferred source for this irrigation water will be the reservoir to be constructed during this project The <br /> new reservoir will be filled by pumping directly from the Huerfano River pursuant to Water Court Case No. <br /> 13CW3062. Alternatively, this water can be pumped from the Burn #2 Ditch with permission of the <br /> landowner <br /> 044 <br />