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• Response -The 2001 addition of Means Heavy Construction Cost Data will be used to recalculate the bond estimate. As final comments aze received from the Division, calculations will be revised and submitted. N.o K-SPC~. Q -I ~ vN~ ^-trrticr ~ Rule 2.06.4 and 2.06.5 Operations on Steep Slopes q-1 ~ ~'~ 42. Please include permit text that discusses how drainage channels across the contour mining area will be reconstructed to comply with Rule 4.27.3(7). From review of the proposed mine plan map 2.05.3-1, at least seven ephemeral drainage channels will require reconstruction upon final reclamation in the contour mining azea. When appropriate, include drainage channel designs (estimated flows, velocities, channel linings) and longitudinal profiles. Y~Utu-~ Response -Reconstructed drainage channels have been designed for the seven ephemeral ~„p/'r drainages to be disturbed by mining. SEDCAD output for calculations used to design these /~~ channels aze submitted for inclusion in EXHIBIT 17. A summary of these channel designs is included as Table 2.05.4-1a on page 2.05-62b. Long profiles aze shown on Figure 2.05.4-18a on page 2.05-62c. Rule 2.06.8 Operations on Alluvial Valley Floors 43. Rule 2.06.8(5)(a)(ii) requires that the applicant demonstrate that the operations on the alluvial valley floor will not materially damage the quantity and quality of the surface and ground water system. What measures are proposed to prevent degradation of alluvial waters as a result of operations at the coal loadout? What environmental monitoring is proposed for this azea as required by Rule 4.24.4? Re~onse -Disturbance to the AVF will include stripping of topsoil and placement of clean fill to raise the area for loadout operations. All waters from the disturbed azea of the loadout will be collected and routed through a sediment pond. These operations will not affect the hydrologic Q-~~S k'O functions of the azea. An upstream and downstream monitoring well will be installed to assess v.1~ impacts of the operation (sites MWPC-2 and MWPC-3 on Table 2.05.6-14, page 2.05-108j. Schedule and pazameters for monitoring will be the same as other alluvial wells currently in the monitoring program. Rule 2.10.3 Specific Information Requirements 44. Please submit the following maps or updates to existing maps for each of the following; (])(d) The location of all buildings on or x~ithin 1, 000 feet of the permit area and the current use of the building. Response -Map 2.05.3-2 shows all buildings within 1,000 feet of the permit boundary and their current use. •