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C~ <br />xevised 1/28/80 <br />Section 785.19(c) Continued <br />The stream deposits of Foidel and Middle Creeks vere found to consist <br />entirely of alluvium with no colluvial or larr3slide material. However, <br />talus slopes and regolith deposits are cannon in steep areas, such as on <br />the flanks of Pinnacle Peak and the slopes below the cliffs formed by <br />the Twentymile and Trout Creek Sandstone Formations. Much of the mapped <br />flood plain of Fish Creek in the general area is mapped as alluvial <br />material, although it is not known at specific locations if the flood <br />plain is underlain by unconsolidated material or bedrock. <br />• Four subject areas within the adjacent area are aclmoaledged as meeting <br />the geomorphic criteria of alluvial valley floors. As shown on the <br />Twentymile Patlc Hydrology (Map 6), these areas are 1) the floodplain of <br />Fish Creek, 2) the tamper reaches of Foidel Creek proper in the northwest <br />corner of Section 13, Township 4 North, Range 67 West, 3) the shaded <br />areas of the Middle Creek floodplain, and 4) the shaded azeas of the <br />Foidel Creek floodplain including an area in the eastern half of Section <br />7, Township 4 North, Range 86 West. <br />The first subject azea, the floodplain of Fish Creek, receives runoff <br />fran Mine No. 2; hoxever, the mining operations at Mine No. 2 are scheduled <br />to end early in 1980 thereby largely obviating any concerns of material <br />• damage to alluvial valley floors in the Mine No. 2 area. A system of <br />765-9(q) <br />