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flows into the natural hillside for easier absorption. The baffle systems were <br />constructed using Bureau of Land Management and US Forest Service <br />guidance (Keller and Sherhar, 2003). Specific details regarding their <br />construction are depicted in Figures 2 and 3. <br />• All flows from the access road length will have been circumvented by means <br />of the above combination of features, meaning that the flows will not reach <br />the Level 6 pad itself. <br />Level 6 Waste Rock Pile <br />Setting: The Level 6 waste rock pile is the pad on which outside mine operations <br />occur. The pad is less than 0.5 of the total 1.5 acres in size and currently retains <br />several stormwater management practices including pad slope and contouring <br />which routes pad stormwater towards the hillside base and not over the pad edge, <br />berms along the perimeter of the pad confine water from precipitation to the pad <br />footprint (refer to attached photographs), a stormwater evaporation basin is <br />located on the pad to accept stormwater originating from the work area, <br />revegetation of perimeter berm areas with the use of stockpiled soil from initial <br />mine operations, berms alongside the portion of Deadman's Gulch adjacent to the <br />pad to confine gulch flows to the gulch itself and prevent pad stormwater from <br />reaching the gulch, Deadman Gulch has been confined to a geotextile lined <br />channel that isolates the flows from contacting the waste rock pile, and run-on <br />channels at the toe of the cut slope to route up-slope flows from entering the pad <br />itself. The combination of these features has appeared to be very effective in <br />controlling stormwater within the Level 6 pad. However, in the interest of being <br />conservative, any stormwater flows that may encounter the waste rock may also <br />create acid rock drainage. This is a `potential' or perceived concern that has not <br />yet actually occurred. <br />As per agreement with the Bureau of Land Management, the waste rock pile will <br />be removed from the native Deadman Gulch channel pathway beginning in 2008 <br />when weather conditions allow for construction activities. In the interim, the <br />native flows have been captured and contained with a geotextile lined channel <br />placed within the Deadman Gulch channel with the dimensions of 4 feet wide by <br />4 feet tall and approximately 1,200 feet in length. The placement of the geotextile <br />liner followed manufacturer specifications where segments were overlapped <br />approximately in 10 foot portions, and anchored with cement nails. The channel <br />itself was anchored into the hillside where the native flows take the form of a <br />seep. First, the seep area was excavated to clean out a workable area to anchor <br />the liner into and to be sure all seep flows would be captured. Then segments of <br />geotextile liner were laid down with overlapping edges to prevent wicking of <br />water. The liner was then anchored with cement nails and packed down with soils <br />to provide contouring. The channel is thereby blended into the natural setting <br />contours and should not create any concerns. Current site observations indicate <br />that the channel design is sufficient to capture Gulch flows. The channel contains <br />only snow and iced seepage, but appears to be adequate for the flow release rate. <br />Page 7 of 16