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E. Acid-forming and Toxic-forming Spoil <br /> 1. Underground development waste from underground workings at the West Elk <br /> Mine is handled as coal mine waste and placed on the Lower Refuse Pile <br /> (LRP), Refuse Pile Expansion(RPE) and Refuse Pile Expansion East (RPEE). <br /> No acid-forming or toxic-forming materials are present in the waste in <br /> quantities significant enough to affect groundwater quality. Therefore, special <br /> handling is not required for these materials (4.05.8(3)). An Upper Refuse <br /> Disposal Area has also been approved for construction, but has not been built. <br /> MCC has verbally indicated this pile will not be needed. Stipulation#7 <br /> requires MCC to complete a geotechnical investigation prior to constructing <br /> the Upper Refuse Disposal Area. <br /> F. Impoundments <br /> 1. Refer to the section regarding sediment ponds (4.05.9). <br /> G. Surface and Ground Water Monitoring <br /> 1. The applicant will conduct monitoring of ground water in a manner approved <br /> by the Division. The ground water monitoring plan is specified in Table 5, <br /> Section 2.04.7 and in Exhibit 71. Point-of-compliance monitoring wells are <br /> located near the permit boundary at the approximate down-gradient extent of <br /> the B and E-seams. Areas mined in the F-seam are up-gradient from the <br /> outcrop, resulting in down-gradient flow in the F-seam not leaving the permit <br /> area. Colluvium is monitored between the refuse piles and the North Fork of <br /> the Gunnison, and data on down-gradient alluvial water is available to the <br /> Division from the up-gradient alluvial well at the Bear No. 3 Mine, adjacent to <br /> the West Elk Mine on the west, immediately down-gradient from the West <br /> Elk operation(4.05.13(1)). <br /> 2. The applicant will conduct monitoring of surface water in a manner approved <br /> by the Division. The surface water monitoring plan is specified in Table 5, <br /> Section 2.04.7 and in Exhibits 71 and 71a (4.05.13(2)). <br /> H. Transfer of Wells <br /> 1. No transfer of wells is proposed at this time. All monitoring wells will be <br /> reclaimed prior to bond release (4.05.14 (3)). <br /> I. Discharge of Water into an Underground Mine <br /> 1. There will be no discharge of water into an underground mine (4.05.16(2)). <br /> J. Stream Buffer Zones <br /> 35 <br />