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H. Transfer of Wells <br />At the conclusion of mining, the two wells used in the operation will be transferred <br />back to the owners at the written request of the surface owners (4.05.14). <br />I. Discharge of Water into an Underground Mine <br />There will be no diversion of water from a surface or underground mine into <br />underground mine workings (4.05.15). <br />J. Stream Buffer Zones <br />There are no perennial streams within the permit boundary; this section does not <br />apply to the King Coal Mine (4.05.18(1)). <br />K. Probable Hydrologic Consequences <br />Ground Water Effects <br />The ground water - bearing units having the greatest potential to be affected by <br />mining at the King I and 11 Mines are the Hay Gulch alluvium, the Menefee <br />Formation, and the Cliffhouse Sandstone. (The Point Lookout Sandstone is well <br />beyond the area of influence of the mines because it is approximately 250 feet <br />stratigraphically below the workings. The Point Lookout has been monitored since <br />late 2000 in the Haugen well about 5000 ft. down -dip from the workings. <br />Monitoring data show no impacts from mining at the King I and 11 Mines.). <br />Hay Gulch Alluvium - The mine will not discharge enough water to the Hay Gulch <br />alluvium to impact the alluvium. The Hay Gulch alluvium has been monitored in the <br />Wiltse well, downstream from the west sediment pond at the King I Mine. <br />Monitoring data indicate no mining impacts to this unit. The King II Mine also <br />monitors alluvial water quality in a down - gradient well. <br />Cliffhouse Sandstone - It appears unlikely that the King I and 11 Mines will fill with <br />water after mining is finished. With the exception of one inflow event, the mine <br />workings of the King I Mine have been dry. Both mines appear to underlie the <br />updip, unsaturated portion of the Cliffhouse Sandstone. Impermeable shale and <br />siltstone of the Menefee Formation underlie the workings, and also are unlikely <br />inflow sources for the workings. If the King I Mine or King II Mine workings were <br />to eventually fill with water, it seems unlikely the water could be transmitted from <br />the workings to the Cliffhouse Sandstone through intergranular porosity in roof rock <br />of the workings because the roof rock is composed of shale, which probably is <br />impermeable to water. (Drill hole sample logs in Appendix 4 of the permit show the <br />Upper Coal Seam of the Menefee Formation, the seam mined at the King I Mine, is <br />bounded above and below by shale.) Subsidence fractures in the roof rock, however, <br />could provide a conduit of flow for water from the workings to the overlying <br />17 <br />