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longer do. The narrow width and fragmented nature of the remnant alluvial terraces render flood <br />irrigation impractical. For these reasons, the Division has determined that the Wilson Creek <br />valley segment delineated as "Area Affected By 1985 Erosion and Mass Wasting Event" on Map <br />11 A is not an alluvial valley floor. <br />Other Stream Valleys in the General Area <br />Various other stream valleys with unconsolidated alluvial deposits in the mine vicinity may meet <br />alluvial valley floor criteria but have not been evaluated as a part of this review, because they are <br />located outside the proposed permit boundary, there is no proposed mine disturbance within their <br />watersheds, and as a result there is no potential for proposed mine operations to impact to the <br />valleys. These valleys include the East and West Forks of Wilson Creek, which are located <br />upstream of any proposed mining, the East Fork of Good Spring Creek, located upstream of any <br />proposed mining, and James Creek, located upstream of any proposed mining. <br />B. Primary Impacts <br />None of the four designated alluvial valley floors are within the azea to be mined; therefore, <br />mining operations will not cause direct disturbance to any alluvial valley floors. Any mining <br />impact that might occur will be indirect in nature. <br />C. Secondary Impacts <br />It is believed that the areas to be mined presently contribute relatively little water to alluvial <br />valley floors. Any degraded water that might reach an alluvial valley floor would be diluted by <br />other sources. In addition, alluvial valley floors are protected by both stream buffer zones and <br />treatment of runoff from disturbed areas in sediment ponds. <br />The Gossard Loadout is located near the confluence of Wilson and Taylor Creeks and the alluvial <br />valley floor associated with Wilson Creek. There is a slight potential for waters of degraded <br />quality to reach alluvial materials neaz the loadout. An alluvial well located near the loadout is <br />monitoring this situation. Runoff from the surrounding areas above the loadout are diverted <br />around the disturbance and waters from the disturbance itself aze treated in sediment ponds and <br />must meet CDPS standazds before being released. <br />Waters leaching salts from reclaimed spoils may eventually reach Taylor, Wilson and <br />Goodspring Creeks. It is believed that these spoil waters will still meet CDPS standards and will <br />not contribute salts in levels that would warrant changes in mining and reclamation plans. This <br />situation will be monitored through alluvial wells located on Wilson Creek (near the Gossard <br />Loadout) and on Good Spring Creek and West Fork Good Spring Creek, both above and below <br />mining disturbances. <br />Proposed Decision and Findings of Compliance 4 May 2007 <br />Permit Revision 02 Page 65 <br />