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occurring outside of the disturbances will be routed around the two <br />operations and returned to the drainage. Runoff produced from the <br />disturbed area will be contained in sedimentation ponds for a sufficient <br />enough time to meet NPDES effluent standards, and will then be released <br />into the drainage. <br />For the same reasons water quality in East Salt Creek will be minimally <br />affected. Because the surface disturbance will consist primarily of road <br />and portal development most of the impact will consist of an increase in <br />suspended sediment concentrations. The sedimentation ponds are designed <br />to reduce the sediment concentration to acceptable levels before release <br />into the streams. <br />No permanent waste disposal areas will be developed for the McClane <br />Canyon mining operation. The operator has requested and received <br />approval to temporarily store underground development waste on the Munger <br />Canyon Mine and McClane Canyon Mine benches until final approval has been <br />obtained for the Munger Canyon Mine disposal site. This decision was <br />based on the temporary nature of the storage and the results of a partial <br />analysis of the waste rock which indicated no problems associated with <br />leaching into ground or surface waters. Additionally, with the current <br />temporary cessation status of both operations, it is not anticipated that <br />any significant quantities of roof fall material or other development <br />waste will require storage before the Munger Canyon Mine disposal site is <br />given final approval. Prior to the development of the waste pile, <br />material to be disposed of will be completely analyzed to determine <br />whether any special handing or remedial treatment will be necessary. If <br />chemical elements are detected at concentrations which, upon contact with <br />surface runoff, could degrade the quality of the water the special <br />handling or remedial treatment measures would prevent or minimize such an <br />impact. Such measures are identified in the Munger Canyon Mine Findings <br />of Compliance. <br />The Munger Canyon mining operation will mine the same coal zone that is <br />being mined at the McClane Canyon Mine. For the first permit term the <br />Munger Canyon mining operation will not advance into the zone of <br />saturation which was projected by the applicant on the basis of drill <br />hole information. Neither Mine will have a significant impact on the <br />nature of ground water during the first permit term. <br />The projected development of the McClane Canyon Mine and Munger Canyon <br />Mine workings indicates potential impact on ground and surface water in <br />the future. Munger Creek, Buniger Canyon, Stove Canyon and a portion of <br />the East Salt Creek Valley floor will be undermined. Prior to issuance <br />of a permit to mine into these areas it will be necessary to determine <br />the absence or presence of AVF's in these canyons, and to predict the <br />effect of mining on any AVF's identified. These determinations will <br />occur in future permit applications. <br />-19- <br />