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2.3-5 <br />2.3.5 EROSION CONTROL CONSIDfiRATIONS <br />2.3.5.1 Existinx Erosion <br />Existing soil erosion rates in areas to be affected by the mine <br />operation vary with the landform, soil characteristics, and <br />vegetative cover. Erosion potential exists for three landforms <br />within the area to be affected: <br />Valley filling fan and sideslope deposits <br />Steep sideslopes <br />Valley floodplains <br />Soil loss rates were not calculated for each landform type; however, <br />the presence of rills and gullies in the area substantiates the fact <br />that a significant amount of soil loss is realized annually from the <br />undisturbed slopes. Soil loss in the floodplain is negligible <br />except for the cutting of the unvegetated stream banks that continue <br />to erode during periods of stream flow. <br />• <br />u <br />({Aloa- <br />