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practice analysis of runoff dischazges has been made to install silt and gravel <br />check dams (4.05.2(3)(b)(I)). <br />B. Diversions and Conveyance of Overland Flow <br />All diversions within the permit azea are designed and constructed in accordance with <br />Rule 4.05.3. Designs are discussed in Section 2.05.3 and in Appendix 8 in the permit <br />application. <br />C. Stream Channel Diversions <br />The Division proposes to approve the permanent diversion of an intermittent <br />stream draining less than one square mile, which flows along the north side of the <br />coal waste pile. This decision is based on a fording that the proposed diversion <br />meets the requirements of 4.05.18 and 4.05.4, applicable local, State, and Federal <br />statutes and regulations and that the diversion is designed to safeguazd public <br />safety and to minimize adverse impacts to the hydrologic balance. (4.05.4(1) and <br />(4))• <br />2. Channel lining structures, retention basins, and artificial channel roughness <br />structures aze proposed for use to control erosion. These structures have been <br />approved by the Division since they are necessary to control erosion, and are <br />stable and will require minimal maintenance. (4.05.4(2)(a)). <br />D. Sedimentation Ponds <br />Design criteria and specifications have been approved for use in both sediment ponds <br />currently in place at the mine site. This decision was based on a thorough analytical <br />demonstration by a qualified professional engineer that the resulting sediment ponds <br />will be as environmentally sound and structurally stable taking into consideration <br />physical, climatological and other chazacteristics of the site. (4.05.6(11)). <br />E. Impoundments <br />Impoundments aze not proposed at this time. <br />F. Ground and Surface Water Monitoring <br />1. The applicant will conduct monitoring of ground water in a manner approved by <br />the Division. The ground water monitoring plan is as follows: (4.05.13(1)). <br />Water quality of ground water is monitored downgradient of the ponds to insure <br />alluvial ground water in Hay Gulch is being protected. National King Coal will <br />monitor the alluvial well for the following pazameters on a quarterly basis: <br />13 <br />