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predicted to be insignificant. A brief discussion of sediment control measures, subsidence <br />impact mitigation, surface water inflow predictions and water augmentation plans follow. <br />The Bowie No. 1 mine plan is designed to minimize the impacts of the project on the <br />surface water hydrology of the region. Disturbed area drainage from the East Mine <br />benches, parking area, west portal fill, and loadout site is collected and treated on the site. <br />Four sediment ponds collect disturbed-area drainage from the mine benches. Another pond <br />controls sediment generated by the underground development waste pile. One pond <br />controls drainage from the run-of--mine stockpile area, and two ponds collect drainage from <br />the disturbed aeeas of the loadout, truck scales, and highway coal stockpile area. The West <br />Mine portal bench azea drained to one sedimentation pond except for exempted portions of <br />the fill face which had a small area exemption waiver. With the reclamation work at the <br />West Mine portal bench area, the backfilled and graded area now drains to two <br />sedimentation ponds. A system of lined and unlined ditches convey waters from the <br />disturbed areas to the ponds. The mine operator has applied for and/or obtained the <br />appropriate NPDES permits. Effluent quality from the sedimentation ponds will be <br />monitored to determine permit compliance. <br />Subsidence effects have the potential to impact any or all springs, seeps, and ponds within <br />the affected permit area. [n order to protect water resources but still allow mining, the <br />operator has developed a subsidence damage preventative mine plan, subsidence repair <br />procedures, a water replacement plan, and an intensive monitoring system. <br />The mine plan has been designed to preclude mining in certain critical areas where water <br />rights exist. For example, the north extreme of East Roatcap Creek will not be undermined <br />to prevent impacts to certain water rights. In aeeas where the overburden depth is less than <br />800 feet, BRL will conduct limited coal extraction under streams to minimize the potential <br />for any subsidence. <br />Should damage to any pipeline, spring, pond, etc., be identified as the result of mining, <br />BRL will repair the damage in accordance with their "Subsidence Repair Handbook." This <br />handbook, incorporated into Volume 3 of the application, contains detailed procedures that <br />will be implemented to repair water resources and structures should they be impacted. <br />A general water replacement plan has been prepared by the operator to augment water to <br />water users while any mine related damage is being repaired. The applicant has <br />demonstrated water is available and can be transported to affected water users if damage <br />occurs. Their water rights consist of both springs and ditch water that could supply a <br />variety of users. Impacts on water users will not be all at once. Rather, impact will <br />progress slowly over areas as coal is mined. The applicant also agreed to reduce leaks and <br />seeps on some ditches and has changed the point of diversion of the Overland Ditch from <br />East Roatcap Creek to West Roatcap Creek.to further protect the rights of present water <br />users. To protect stock and wildlife, the applicant has committed to maintaining a <br />designated number of stockponds on the permit area which will be protected from damage. <br />When BRL mined under Steven's and East Roatcap Creek, there was the possibility that <br />water could have been encountered even if there was no subsidence. Faults and fractures <br />may be encountered underground that are in communication with the stream and its <br />associated alluvial/colluvial deposits. Dewatering of these faults and fractures could <br />diminish streamflow and the alluvium/colluvium when water is present. The limited <br />depletions are not predicted to be significant enough to cause a major change in stream <br />28 <br />