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<br />EXHIBIT A <br />Please refer to question 4a oP the Environmental Assessment <br />Data questionnaire. <br />Cleer Creek, a tributary of the Platte River west of Denver, is a <br />fast-moving mountain stream. The project can be segmented in <br />three parts; an east section, a middle section end a west section. <br />The east and west sections are where the project will require that <br />fill material be placed in the stream channel. <br />Along the east section the width of the water averages 48 feet and <br />the channel averages 73 feet. The maximum fill width will be 30 <br />feet, which corresponds with a river channel width of 106 feet. <br />Construction on the eastern portion of the project will begin by <br />dozing the existing shoulder area into a flat bench. The bench <br />will extend into the river channel for the full width needed for <br />the road surface, shoulder and slope. When this is complete, <br />backfilling in layers will be started so that highway department <br />compaction standards can be met. As the bench is being <br />constructed, the creek will not be interrupted but only pushed <br />over into another section of the existing channel. The quantity <br />oP material needed to backfill this part of the project is 3,800 <br />cubic yards +/- and will be obtained from the construction site of <br />a mine entrance road near the project. The backfill material will <br />be broken rock of various sizes. <br />Along the west section the water averages 46 feet in width and the <br />channel averages 7? feet. The deepest section of the river <br />channel is along the north side; therefore it will be necessary to <br />deepen the south side of the channel so as not to raise the <br />elevation of the water. This will be done by widening the <br />channel with a dozer and drag line. When the deepened section <br />of the channel is complete, the creek will be diverted into it. <br />The material removed during the widening of the channel will be <br />used to backfill part of the north side of the existing channel <br />where the road is being constructed. The remainder of required <br />backfill materiel will be obtained from the entrance road <br />construction site. It is anticipated that the total fill needed <br />for this section is 3,200 cubic yards +/-. If the channel is not <br />widened, the elevation of the water will cover the eutfall culvert <br />that crosses under the highway and restricts the flow of runoff <br />from lands north of the highway. <br />The exact method of construction will be the option of the <br />contractor. <br />