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EXHIBIT C <br /> Rule 6.3.3 <br /> Mining Plan <br /> The proposed operation will not result in a discharge into state waters. Limited soil materials will <br /> be disturbed during the material extraction and therefore sediment transport from storm water <br /> will be be minimal. Applicant plans to manage storm water by utilizing best management <br /> practices, as developed by Edwin Friend, P.E., P.G.—RJH Consultants, Inc. based on guidance <br /> from the Colorado Department of Transportation Erosion Control and Storm Water Quality <br /> Guide, and the Environmental Protection Agency Industrial Storm Water Face Sheer Series for <br /> Sector J: Mineral Mining and Process Facilities. Mr. Friend's recommended Best Management <br /> Practices can be found in attachment C-4, Van Valkenburg Quarry Storm Water Management <br /> Plan,and are replicated here: <br /> Best Mann ement Practices during Mining Activities: <br /> • A gravel tracking pad on the haul/access road near the edge of the affected area. <br /> • Stockpiled soil and topsoil that will not be used within a mining season will be seeded <br /> to stabilize the stockpiles. <br /> • Where there is a potential for storm water to erode material off of the site, sediment <br /> control measures will be installed that could include a combination of berms, silt <br /> fence,or erosion control logs. <br /> • Site grading would be maintained so that concentrated drainage that could result in <br /> scour does not occur. <br /> Best Management Practices for Final Site Reclamation: <br /> • Seeding of disturbed areas <br /> • Site grading would be developed so that co <br /> 6) Existing Water Rights: <br /> Existing Water Rights will not be affected by the proposed gravel pit. <br /> (k) Refuse and Acid or Toxic Materials: <br /> There are no known refuse, acid, or toxic producing materials in the area of the proposed gravel <br /> pit. if they are encountered, operations will cease and the materials will be contained in <br /> accordance with applicable laws and regulations. <br /> (1) Measures to Minimize Disturbance to Hydrologic Balance,Off-Site Damage,and <br /> Provide for a Stable Configuration of the Reclaimed Area Consistent with the Proposed <br /> Future Land Use: <br /> Hydrologic Balance—The proposed operation impacts on the hydrologic balance will be <br /> minimal. Groundwater will not be encountered. <br /> Van Valkenburg Cattle Co., LLC <br /> Construction Materials Limited Impact(110)Operation Reclamation Permit Application Form <br /> Page 3 of 4 <br />