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Maps 3C and 3D show the location of the Apache Canyon Airshafts. These shafts were • <br />constructed under the New Elk Mine permit, No. C-81-012, as facilities for the New Elk <br />Mine. In 1996, the New Elk Coal Preparation Facilities were sold to and the permit <br />ownership transferred to Picketwire Processing LLC. Basin Resources retained the <br />contractual obligation for the final reclamation of the Apache Canyon Airshafts. In <br />1998, Picketwire Processing submitted a request for Surety Release effectively reducing <br />the permit area including the azea encompassing the Apache Canyon Airshafts. A minor <br />revision to the New Elk Permit removing the Apache Canyon Shafts from the New Elk <br />Permit was also submitted. Concurrently Basin Resources requested the transfer and <br />inclusion of the Apache Canyon Airshafts into the Golden Eagle mining permit. These <br />facilities aze also addressed in Exhibit 19, Bond Calculations, and Exhibit 32, Apache <br />Canyon Airshaft. <br />The surface water and sediment control plan used prior to final reclamation consist[;d of <br />fresh water diversions, collection ditches, sediment control ponds, and small area <br />exemptions. Designs for the ditches and diversions and supporting documentation can be <br />found in Exhibit 18, and summarized in Table 17. Culvert sizing calculations are <br />compiled in Exhibit 18 and summarized in Table 19. Location of these ditches and <br />culverts is shown on Map 11. <br />The sediment ponds were designed in accordance with Sections 4.05.6 and 4.05.9 of the • <br />regulations and documented in Exhibit 18. Drainage basins used in the calculations are <br />delineated on Map I IA. Pond locations are shown on Map 11. Small Area Exemption <br />(SAE) demonstrations are documented in Exhibit 33, Volume 4 of the permit application. <br />During the spring of 1997, Basin borrowed topsoil from an area outside the sediment <br />control system north of the entrance. The modeling of this SAE utilized four sediment <br />control features to minimize the Peak Settleable Concentration in runoff. Contour <br />furrows were installed at 25' intervals down the slope with a ripper running along the <br />contour at a depth of two feet. One line of check dams (straw bales) were placed at mid- <br />slope and another line placed at the base of the borrow area. These were maintained until <br />vegetation was reestablished. The area was mulched with straw at two tons per acre. A <br />grass filter existed at the base of the slopes drainage to further reduce sediment loading. <br />The resulting Peak Settleable Concentration demonstrated by the modeling was 0.44 ml/I <br />from a total contributing drainage area of 7. i acres. <br />C~ <br />2.05-6 (Permit Renewal Revisien 3/3 U00) <br />1~N-b3 <br />