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-40- <br />The entire Roatcap Creek system contains no alluvial deposits, due to the steep <br />topography and overall drainage gradient. One irrigation ditch, the Overland Ditch, <br />follows the topographic contours at the Northernmost boundary of the Orchard Valley <br />Life-of-mine area. <br />There are several springs and numerous ponds within the permit and hydrologically <br />adjacent area of the Orchard Valley mine. It appears that, from the data submitted to <br />date, most of these springs and ponds are intermittent and depend upon seasonal <br />precipitation and long-term weather patterns. The source of most of the springs <br />appears to be related to landslide complexes, to faults and fractures, to areas of <br />colluvium/alluvium where ground water has accumulated, or to the discharge points of <br />local perched ground water in the lenticular sandstones of the Mesaverde Formation. <br />