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<br /> <br /> <br /> <br /> <br />Permit Number C1981028 Prepared by: R. Reilley, MS, GISP <br />SL9 12 <br /> <br /> <br />The collected elevation points comprising transects #4 and #5 vary greatly from the topography, as the <br />elevation in Area 34 is quite flat. It is unknown exactly why the elevation outliers are so dramatic. The <br />collected points do not mirror what is on the ground. As illustrated in the above data analysis, many <br />variables affect the precision of field-collected elevations measured with a handheld GPS unit. <br /> <br />Despite the variability in the field collected data, on the ground observation and professional judgement <br />indicates that the operator graded parcels in accordance with the approved post mine topography. The <br />parcels adequately blend in with the surrounding reclaimed and undisturbed topography and adequate <br />drainage in the approved direction is occurring as prescribed by the permit. <br /> <br /> Figure 5: Transect 5 elevation cross sections. <br />Drainage Reconstruction <br /> In general, each of the SL9 bond release parcels has a northeast or a northwest aspect with positive <br />drainage established to the northeast. Reconstructed channels were included within the bond release <br />parcels. Channels are constructed to flow from south to north conveying surface runoff to sediment ponds. <br />The drainage facilities and site topography are shown in Appendix M-1 of the mine permit. To date, long <br />term sediment accumulation in Sediment Pond 2 has not proved problematic. Permanent drainage <br />facilities for final site reclamation are shown in Appendix Q-1 of the mine permit. CEC constructs <br />drainages on newly deposited topsand, consisting of relatively fine sand as well as soil comprised of the <br />overburden material removed in the mining process in accessing the coal seam. Channels are seeded, <br />achieving a grass lined channel. Runoff from each parcel is routed to drainage channels and then into <br />either of the two sedimentation ponds prior to water discharging from the site. <br /> <br />Summary and Conclusions <br /> <br />Based upon a review of the mine permit, the applicant's bond release application, and site inspections, <br />4778.01 <br />4766.53 <br />4775.71 <br />4789.82 <br />4780.31 <br />4784.00 4784.00 4784.00 4784.00 4784.20 <br />4787.00 4786.50 4786.10 <br />4785.50 <br />4788.10 <br />A B C D EElevation (ft.)Transect 5 <br />Height Above MSL (Mean <br />Sea Level) <br />SL 9 Map <br />Post Mining Topo