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_P4_ ii. A. There is no flood irrigation ,and historically there has not been any flood irrigation in Deep Creek. B. Although Deep Creek could sustain flow well into July, insuffficient water is available for flood irrigation in Deep Creek Canyon. C. Ground water information indicates that there is no subirrigation. Precipitation percolates through the alluvial/colluvial cover and stabilizes at about 20 to 40 feet below the surface. The Division feels that Deep Creek and its associated alluvium recharges the Stollsteimer Creek Alluvial Flow System downstream of the confluence of Deep and Stollsteimer Creeks. The amount of water contributed to this system by the Deep Creek flow regime is probably negligible when the Stollsteimer system is viewed as a whole. The mine plan calls for a buffer zone along Deep Creek which should mitigate the disruption of recharge to the downstream component of the flow system. The permittee has provided enough information to satisfy Rule 2.06.8 and allows the Division to find that Deep Creek Canyon does not contain an alluvial valley floor. As stated in the original permit application, an alluvial valley floor exists along Stollsteimer Creek. The alluvial deposits along Stollsteimer in the northwestern part of the Revision No. 2 area, north of Highway 151, are part of the Stollsteimer AVF. No mining will occur north of Highway 151 in the mine plan for the permit Revision No. 2 area. There will be no disturbance of this AVF surficially or hydrologically. The proposed operation is in compliance with the requirements of this section. IX. Assessment of Probable Hydrologic Consequences of Mining and Cumulative Hydrologic Impacts - Rules 2.05.6(3) and 2.07.6(2)(c) The information used to assess the probable hydrologic consequences was obtained from the Permit Revision No. 2 application and the PAR responses. Chimney Rock's operation is the only coal mine located in the Piedra River drainage basin, therefore, their current and proposed operations are the only mining activities to be considered in the cumulative hydrologic impact assessment. In order to verify any proposed mine impacts to the hydrologic regime, the permittee will submit an annual hydrologic report to the Division. This report will include all the reduced and tabulated data collected during the water-year (October 1 thru September 30). The operator's interpretation of the data will be an integral part of the report.