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Inflow: No unusual occurrences of inflow were noted as a result of the Annual Mine Inflow study. Inflows aze <br />within the projected flows presented in [he permit. Water quality has not changed significantly and appears to <br />mirror the quality of [he adjacent spoil water I[ appears that the elevated EC and iron readings are associated <br />with the water that has pooled in the mine sump, in contact with the overlying Marine Shale. This contact has <br />provided the opportunity for additional salts and iron to be leached from this unit. The pumping of [he sump <br />should see a decrease in the elevation of the pool over time, with an anticipated decrease in the EC and <br />concentration of iron in the effluent. <br />Subsidence: During the second half of 2005, subsidence survey data was collected periodically from established <br />monuments on the Union Pacific Railroad and the YVEA power line in areas underlain by gate roads or pane] <br />centers during periods of mining in the 15 Rt longwall panels. During the second half of 2005, subsidence survey <br />data was collected periodically from established monuments on the Union Pacific Railroad in areas underlain by <br />gate roads or panel centers during periods of mining in the 16-Right longwall pane]. <br />No significant subsidence ponding, overlying subsurface mined areas along Foidel Creek or Middle Creek was <br />evident in 2005. Ponding was noted along Fish Creek in the eastern portion of Twentymile Park in the general <br />area of surface site SW-15 (see Figure 2). The only hydrologic anomalies noted were [hose associated with new <br />surface sites SW-13 through SW-15, and their associated Fish Creek alluvial wells, AVF-13 through AVF-15, as <br />discussed above. <br />• <br />• <br />16 <br />