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<br />South Platte River for about 0.5 miles upstream and about 0.5 miles downstream ofthe confluence with <br />the St. Vrain Creek. Bald eagles are primarily using mature cottonwood trees along the east banks of <br />the river as a roosting site. Winter roosts may change annually and all trees within a given roost may not <br />be used each year. The Division of Wildlife has annual observations of this roost since ] 997 and <br />recorded up to 28 individual birds in the roost at one time occurring in mature cottonwood trees within <br />the marked roost. This is a significant roost considering its size and historical use and continues to be <br />very active in 2001. <br />We strouely recommend a buffer of oo less than 0.25 miles around the entire roost site (=0.25 <br />miles from all roost boundaries) and would prefer a buffer of 0.50 miles if the inteeritY and lone- <br />term maintenance of this roost is a priority. 0.50 miles will assure arotectiou from disturbance of <br />this roost. We recomroeod contactine the U.S. Fish & Wildlife Service reeardinQ the miti¢at_ion <br />asaects of disturbioe this roost site. <br />It has come to our attention that Burrowing owls have been observed by surrounding landowners in past <br />years on a portion of the proposed mining site. This area has been marked on the enclosed map and we <br />recommend surveying for the presence of this species this spring and our previous recommendations <br />adhered to. <br />The Division of Wildlife appreciates this opportunity to comment on this mining project. If you have any <br />questions, please contact me at (970)472-4435. Thank you. <br />Sincerely, <br />Scott Hoover, Acting NE Regional Manager <br />by Mike Shermazy Field Habitat Biologist <br />Cc: Rick Moss, NE Senior Habitat Biologist, CDOW <br />Dave Clarkson, Area Wildlife Manager, CDOW <br />Courtney Crawford, District Wildlife Manager, CDOW <br />Jerry Craig, Senior Reseazch Biologist, CDOW <br />