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• June I I, 1980. The investigation resulted in no identification of alluvial valley floors in the <br />area to be mined; however, the floodplains of Goodspring Creek, Wilson Creek, lower Taylor <br />Creek and lower Elkhorn Creek may conform to the geomorphic criteria of AVF surface <br />landforms because they are underlain by unconsolidated material of Quaternary Age. None of <br />these floodplains are located in the area to be mined as shown on the Mine Plan Map (Map <br />23). <br />The Gossard Loadout is located in an area between Wilson Creek and Taylor Creek near the <br />junction of these two drainages; however, no major subsurface disturbance has occurred in <br />this area which might adversely affect the possible subsurface hydrologic system with <br />regards to potential alluvial valley floors. The actual area to be mined is located well above <br />the flood plain of Goodspring Creek both topographically and geologically. As discussed in <br />Section 2.04.7, the existence of groundwater in the mining area is limited to perched systems <br />which primarily discharge small amounts of water in the canyon walls near the mine on a <br />seasonal basis. Very little water is found in the active mine; and, based on existing geological <br />and hydrological evidence, the area to be mined provides no or only minor amounts of <br />recharge to Goodspring Creek and Taylor Creek. Therefore, the flood plains of Goodspring <br />Creek, Wilson Creek, and lower Taylor Creek should not be adversely affected by mining <br />operations. <br />Geomomhic Characteristics <br />The investigation was initiated by mapping unconsolidated deposits in the general area, using <br />• published and unpublished geologic maps and ground reconnaissance. These deposits and <br />their associated stream channels are shown on the Regional Hydrology Map (Map 10). Also <br />shown are delineations of Goodspring Creek, Wilson Creek, and Taylor Creek watersheds <br />and the general topography of the floodplain areas. From field reconnaissance, it was <br />determined that many of the mapped floodplains in the general area are extremely narrow or <br />contain too much topographic relief in the form of slopes to be considered capable of being <br />irrigated. <br />CJ <br />2.06-I I <br />