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REQUEST FOR TECHNICAL REVISION Mine ID# M-1993-035 <br /> Mine Name: Swan River Resource Location: Summit County <br /> 5 Aquatic Habitat Instream 9/9 Within the new channel step/pool sequences will be formed <br /> Step/Pool for aquatic habitat and instream bed form diversity where <br /> Sequences/Micro-Habitat groundwater gradients are too steep for riffle-pool-glide <br /> sequences. <br /> 6 Riparian Zone — 8.5 acres Streamside area above the bankfull elevation extending <br /> Reclamation landward approximately 100-125 feet on either side of the <br /> channel. <br /> 7 Outside Bend Bank 3,750 feet As part of the Riparian Zone at critical outside bend areas <br /> Stabilization along channel will require increased reinforcement to <br /> maintain channel form. Bank stabilization will include <br /> compacted gravels/cobbles, capped with growth medium, <br /> native seeding and shrub plantings. <br /> 8 Upland Reclamation —10.0 acres Recontoured valley bottom capped with growth medium and <br /> native seeding. <br /> 9 Rock Island Road Bridge I A span bridge will be installed to accommodate the new <br /> channel and flows through Rock Island Road and eliminate an <br /> existing fish barrier. <br /> Water Rights <br /> Reach B of the restoration reclamation design within the permit boundary indicates a net increase of <br /> approximately 2.0 acres of open water, 8.5 acres of riparian vegetation, and 2.0 acres of wetlands following <br /> project completion. The Summit County Board of County Commissioners has committed to offset consumptive <br /> use associated with restoration reclamation of the Swan River Resource utilizing the Summit County portfolio of <br /> water rights, some of which were adjudicated specifically for this purpose. Discussions are ongoing with the <br /> state Engineer's office to ensure these water rights are appropriated to support the reclamation post-mining use <br /> as a restored stream and riparian corridor. <br /> Other Permits <br /> Prior to implementing the restoration reclamation approach described herein, the mine operators will obtain all <br /> other additional necessary permits from the appropriate regulatory agencies including, but not limited to the <br /> U.S. Army Corps of Engineers, Colorado Department of Public Health and Environment, State Engineer's Office <br /> (Division of Water Resources), and Summit County. <br /> Following Rule 1.9.l, if we do not hear from DRMS within 30 days, it will be assumed that this letter is sufficient <br /> to incorporate the proposed reclamation approach into the M-1993-035 permit. However, written <br /> confirmation of the acceptance of this notice would be greatly appreciated. If you have any questions, please <br /> contact us at your earliest convenience. Thank you in advance for your attention to this matter. <br /> Sincer ly, <br /> Scott Vargo, Summit County Manager <br /> C4fT <br /> 7of7 <br />