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This type of channel would be uncharacteristic of those types associated with an alluvial fan and would probably fail over the long-term. It would not provide the channel stability that a "B" channel type would provide in this situation. In addition, because of the steepness of the alluvial fan, designing a channel to prevent lateral adjustments would be difficult, as that is what a channel flowing across a fan typically does over time. In order to reduce the risk of losing the "C° channel type during runoff, the lower portion of the current channel would have to be utilized as an overflow channel. A °hard point/spillway" would be installed using a gabion/rock structure where the new channel takes off from the existing channel. This is intented to prevent any downcutting, resulting in the abandonment of the new channel. However, this will be an art ifical looking structure, and could potentially fail and result in the stream returning to its original channel. The over-all affects of this alternative would be similar to those described under Alternative 2, except for that part of the mainstem above the confluence. It is expected that this type of channel configuration would not hold over the long-term and the channel type described under the preferred alternative would provide longer lasting stability to the system. IX. Threatened. Endaneered and Sensitive Species A Biological Evaluation was completed for TES species on March 15, 1996, and it was determined that none of the listed species, or their habitat, would be adversely affected by the proposed action. A copy of the Biological Evaluation is attached to this Environmental Assessment. X. Coordination and Consultation Colorado Division of Wildlife Army Corps of Engineers San Miguel County Comissioners Dave Rosgen, Wildland Hydrology Consultants XI. Interdisciplinary Team Jeff Cameron John Almy Jim Dunn Craig Grother Jeff Burch Dale Trenda 10