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Control measures may include any combination of cultural, mechanical, biological, or <br />chemical means. Weed control measures will be developed specifically for the noxious <br />weed species encountered on the site and will be in conjunction with the local weed <br />control district and/or the Colorado Department of Agriculture. Where noxious weed <br />control measures cause disturbance to the remaining vegetation, seeding or planting of <br />desirable replacement vegetation will occur during the first normal planting or seeding <br />season after weed control measures have been implemented. <br />Post-Mining Land Uses: The post-mining land use of the Nix Sand and Gravel Mine will <br />be open bodies of water with limited rangeland. No agriculture or pastureland is planned <br />as post-mining land use. <br />6.4.7 Exhibit G -Water Information <br />2. a. A revised Pre-Mine Plan Map illustrating the locations of wells, springs, water <br />ponds, and ditches on or adjacent to the property which may be impacted by the <br />proposed operation is included with this correspondence. We do not believe any <br />tributary watercourses will be affected by the proposed mine. <br />2.6. Aquifers known to exist below the Nix property include the Upper Arapahoe and <br />Laramie-Fox Hill. <br />2.c. Protection of the site against pollution of either surface water or groundwater from <br />runoff, as well as piled material and operating surfaces, will be guaranteed by subjecting <br />the site to the regulations and requirements set forth by the Colorado Department of <br />Health and Environment, Water Quality Control Division and the required Discharge <br />Permit that the Applicant will have to obtain before mining commences. The Applicant <br />has applied for this permit. Proof of approval will be forwarded to your office once <br />received. <br />3. The proposed mining operation will require water for processing and sorting of sand <br />and gravel. Water for these purposes will be supplied through water rights the Applicant <br />has obtained through the purchase of the property. Water will also be consumed <br />through surface evaporation and product moisture loss. At projected mining and <br />processing rates, the site will require approximately 88 acre-feet of water per year to be <br />replaced into the groundwater system in the first two years of mining. <br />4. Through the Last Chance Ditch the operator has rights to approximately 438 acre- <br />feet of water per year, which will be used as augmentation water. The Applicant has <br />also obtained two wells from the Nix's: the Strong and Herren Wells #1 and #3. <br />5. The Applicant has applied for a Discharge Permit from the Water Quality Control <br />Division at the Colorado Department of Health. <br />6.4.8 Exhibit H -Wildlife Information <br />1.d. We do not anticipate any adverse impacts to occur at the Sage Hill Farm wetland <br />as a result of the proposed operation. While the possibility exists that mining operations <br />may cause a minimal amount of drawdown of the water that feeds the wetlands due to <br />lake levelling, we believe that there are adequate measures that can be taken to mitigate <br />that impact. The Wetland Impact Analysis prepared by Wright Water Engineers <br />