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<br />2.06.8(3) (b) (i) <br />• Referring to the General Description of Hydrology and Geology, <br />Section 2.04.5, the Geology Description, Section 7.04.6, and <br />the Hydrology Description; Section 2.04.7, it is noted alluvial <br />gravels do exist within the permit area of Grand P!esa Coal <br />Company. However, it appears that the majority of this material <br />is the result of a glacial mass movement. There has been some <br />reworking of the material by the streams present in the area. <br />Thus, the gravels can be considered to be an upland deposit by <br />mass movement. Refer to the Geology Map, 2.04.5-1, the Bedrock <br />Configuration Map, 2.04.5-2, and the Isopach Map-Alluvial F.quifer, <br />2.04.5-3, fo.r the location of the deposits. <br />It should be noted that the mining of the "E" and "D" coal seams <br />will take place below the bedrock and will not disturb the deposit. <br />Refer to the Operation Plan Permit Area, Section 2.05.3, and the <br />Subsidence Plan, Section 2.05.6(6). <br />• There are no known flood plains in the permit area. <br />The Surface Drainage Pattern Map, 2.04.7(a)(k~)-1, shows the <br />topography, and the surface drainage patterns of the permit area <br />and also adjacent areas. <br />(ii) Mapping of all lands that are .currently or were historically <br />flood irrigated, showing the location of each diversion structure, <br />ditch, dam and related reservoir, irrigated land, and topography <br />of those lands. <br />The General Description of Hydrology and Geology, Section 2.04.5, <br />and the Hydrology Description, Section 2.04.7, describe the surface <br />water system. The only lands within or adjacent to the permit area <br />would be those identified on the Land Use Dlap, 2.04.3(2)(a)-1, <br /> <br />REVISED May 8, 1981 161 <br />