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<br />2.06.8(3)(b)(iv) <br />within the alluvial aquifer area. The Soils Resource Information, <br />Section 2.04.9, describes the soil within the permit area. As <br />can be seen on Table 2.04.9(1)(a)-1 the soil is nonirrigated and <br />rooting depth is 30 inches. The available water capacity is <br />3.5 inches. <br />The land within the permit area of Grand Mesa Coal Company is not <br />considered to be subirrigated. <br />(v) Documentation, based on representahive sampling, that areas <br />identified under 2.06.6(3) are, or are not, flood irrigable; <br />based on stream-flow, water quality, water yield, soils measurements, <br />and topographic characteristics. <br />Referring to the Lanci Use Map, 2.04.3(2)(a)-1, and the General <br />P•cyuirements: Site Description and Land ttse Information, Section <br />2.04.3, it can be seen that the elevation in the permit area <br />ranges from 6300 to 6800 feet. Drawing 2.04.5-1 and Table <br />2.04.5-1 illustrate the yield of irrigation ditches adjacent <br />to the permit area. Analysis of water samples taken around the <br />P.ed Canyon #1 Mine site are shown on Figures 2.04.7(2)(b)-l, <br />2.04.7(2)(b)-3, 2.04.7(2)(b)-4, 2.04.7(2)(b)-5, and 2.04.7(2)(b)-6. <br />Based upon the quantities of steam-flow and the topography of the <br />area, the majority of the permit area is not flood irrigable. <br />(vi) Analysis of a series of aerial photographs, including <br />color infrared imagery flown at a time of year to show any <br />late summer and fall differences between upland and valley floor <br />vegetative growth and of a scale adequate for reconnaissance <br />identification of areas that may be alluvial valley floors. <br />Not Utilized. <br /> <br />REVISED May 8, 1981 <br />163 <br />