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.'~~q~,~;4,,; <br />~' ~~ <br />.~ <br />-2- <br />your consultant. If that information proves to be false or <br />incorrect, we will adjust our determination accordingly. <br />We have also reviewed your proposed mine plan. Many of the <br />jurisdictional wetlands will be avoided, but some wetlands will <br />be excavated and the haul road will require some fill within <br />wetlands. Based on the details provided, we concur with your <br />consultant that the crossing design utilizing pilings will not <br />have the effect of a discharge of fill material and therefore <br />does not require a Department of the Army permit. <br />Although a Department of the Army permit is not required, we <br />would like to provide several comments on this mine project: <br />1. Routt County FEMA Mapping for the 100-year floodplain does <br />not cover the project site and ends approximately one-half mile <br />upstream. Visual observation of Yampa River flows this spring <br />and the fact that this site is located at the confluence of two <br />streams further supports large stream buffers and consideration <br />of mine impacts on the floodplain.. Avoiding wetlanda.and areas <br />adjacent to streams,will.Help_.to piotect:;riparian.vegetation and <br />allow overbank flooding and utilisation of .the .floodplain .(to <br />dissipate energy during runoff and hopefully help prevent pond <br />capture). We recommend further consideration of larger buffers <br />in the northwest corner from wetland boundary point #887 to #925. <br />Depending on results of an independent evaluation of floodplain, <br />larger buffers may also be appropriate adjacent to Trout Creek <br />along the south and western edges. <br />2. Pit reclamation should include shallow sloped pond edges <br />(lOH:1V) to help add diversity to the large reclaimed waterbody. <br />Wetland vegetation will add to site aesthetics, assist with <br />shoreline erosion, and improve habitat for aquatic organisms and <br />wildlife. It is recommended that all excavated wetlands <br />vegetation be salvaged and replanted to assist in this effort. <br />3. The applicant is encouraged to coordinate with and seek <br />advice from the Colorado Division of Wildlife concerning fish <br />stocking plans and pond management. <br />