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development. The Applicant will seed the reclaimed land with an appropriate dry seed mix <br /> until such residential development. The Application intends to leave the concrete road in <br /> place for use by the landowner and convert the two (2) steel buildings into airplane hangars <br /> for use by an adjacent airport community. The Applicant will grade perimeter slopes to be <br /> no steeper than 3H:1V; at the hearing, the Applicant testified that slopes will be stable at no <br /> steeper than 3H:1V. <br /> 12. Based on the proposed mining and reclamation plans in the Application,and in <br /> accordance with the applicable requirements of the Colorado Mined Land Reclamation Act, <br /> Article 32 of Title 34, C.R.S. ("Act") and the Mineral Rules and Regulations of the Board for <br /> Hard Rock, Metal,and Designated Mining Operations ("Rules"), the Division calculated the <br /> initial cost of reclamation at$85,950. <br /> 13. The Applicant performed.a Syiitetic Precipitation Leaching Procedure <br /> ("SPLP") test on the material to be mined at the site. The Division received the SPLP test <br /> results on February 26, 2015. The SPLP test results showed 0.013 milligrams per liter <br /> (mg/L) of selenium in the materials. This amount is below the regulatory drinking water <br /> standard for selenium of 0.05 mg/L. Also,in an Inductively Coupled Plasma-Optical Emission <br /> Spectrometer analysis of unprocessed Mancos Shale or waste rock,the Division found that <br /> selenium was not detected above 0.5 parts per million (ppm). <br /> 14. The minor amounts of selenium in the Mancos Shale at the site are not in <br /> quantities sufficient to adversely affect any person,property,or the environment. In <br /> addition,the area of the proposed operation receives very little average annual rainfall <br /> (less than eight inches (8") per year). Selenium mobilization will not impact the quality of <br /> groundwater and surface water. <br /> 15. The operation is unlikely to disturb acid-Forming materials in quantities <br /> sufficient to adversely affect persons, property,or the environment. Pyrite that exists in <br /> the Mancos Shale at the site could,through oxidation, eventually result in the production of <br /> sulfuric acid. However,the low average annual rainfall in the area will be insufficient to <br /> mobilize any acid that may be produced. Even if acid is produced and mobilized, acid mine <br /> drainage would be neutralized by the alkaline soil in which the pyrite exists. <br /> 16. The quality of groundwater and surface water at the site is adequately <br /> protected. No groundwater or surface water is present in the mining area and the <br /> proposed operation will not expose groundwater. In addition,the Applicant will not <br /> discharge water used in the mining process: the Applicant will collect and filter water from <br /> the leaching process, and use it on-site for cleaning purposes. Further,stormwater will be <br /> subject to the requirements of a National Pollutant Discharge Elimination System <br /> Stormwater("NPDES") Permit and regulated by the Colorado Department of Public Health <br /> and Enviroiament. The Applicant has filed an applaration for an NPDES permit. In addition, <br /> the Office of the State Engineer provided comments to the Division,stating no objection to <br /> the Application provided the operation uses water from a legal source. The Applicant will <br /> legally purchase domestic water from the City of Delta. <br /> Magzuma Minerals,LLC <br /> Magzuma Minerals Mine/M-2014-065 3 <br />