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Paul Banks and Associates, LLC <br />Surface Water <br />The Colorado River lies to the northwest of the site, over 1,000 linear feet from the <br />nearest point of the affected area. Return flows for two ditches cross the permit <br />property. Drainage within the permit boundary is sheetflow toward the Colorado River, <br />which will be diverted to the pit floor within the affected area of the proposed permit. <br />The mining plan submitted with this package minimizes the potential for surface water <br />effects. The mining plan avoids impacts to other waters of the United States, such as <br />wetlands. The land surface will be exposed to runoff during mining and reclamation, <br />therefore standard industry water quality protocols will be observed on the site. A <br />Colorado Discharge Permit System (CDPS) permit, implementing the NPDES program <br />in Colorado, will be obtained when necessary prior to commencement of operations. <br />Wetlands or waters of the United States may exist within irrigation ditches on the site, <br />which is accommodated as shown on plans. The Applicant will avoid mining in all <br />waters of the U.S. (or else receive permission to modify jurisdictional waters through a <br />Nationwide or Individual 404 permit). <br />Groundwater <br />The applicant /operator commits to following rules and regulations of the Office of the <br />State Engineer regarding wells within 600 feet of the mining operation. No water quality <br />or adverse quantitative issues at these wells are anticipated to result from the operation. <br />The groundwater surface may be depressed at some of the inventoried wells, but due to <br />the high permeability of the aquifer the productive capacity of the wells will not be <br />significantly affected. <br />Water Quality, Water Management <br />All water captured within the affected area will be routed to the pit floor, where a <br />sedimentation and pump system will perform basic water quality functions. Sump areas, <br />where water will collect on the pit floor, will be deep enough to store water and <br />encourage deposition of sediments. Pumps will be checked by filtration buffers, cleaning <br />water prior to returning runoff and dewatering water to the surface system. <br />Debeque Sand and Gravel Resource 11019 <br />Oldcastle Southwest Group, Inc. 17 November 2011 <br />