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The Schist Island and western portion of the Globe Hill portions of the North Cresson <br />Mine area will be backfilled to promote free drainage of storm water to the surrounding <br />ground surface and to blend with the SGOSA, as described in the SGOSA discussion <br />above. Mining will occur in the Schist Island portion of the North Cresson Mine area <br />from 2014 -2017, with reclamation taking place following the end of development in that <br />area from approximately 2017 to 2019. <br />The East Cresson Mine area is expected to be backfilled to promote free drainage of <br />storm water to the surrounding natural ground surface as previously approved for MLE. <br />This backfilling will include the WHEX portion of the East Cresson Mine area to be <br />mined as part of MLE2. Backfilling will be accomplished by end - dumping the material <br />in lifts that range in height, depending on the logistics of truck hauling, the geographic <br />locations relative to the mine area and overburden placement scheduling. It is anticipated <br />that this area will be backfilled to an elevation and shape that will promote free drainage <br />of storm water to the surrounding surface and graded to blend with the surrounding <br />topography including the reclaimed topography of the ECOSA. <br />The storm water drainage flow -line in Grassy Valley will be directed through the <br />constructed backfill north of its present alignment and where the backfill is the <br />shallowest, along the northern portion of the WHEX portion of the East Cresson Mine <br />area. The relocation of the storm water drainage flow -line will include sculpted <br />landforms (a ridge) and the storm water drainage flow -line will be lined with clay to <br />prevent infiltration into the active mining area. This reclamation and storm water <br />drainage flow -line re- establishment will occur in approximately 2025 to 2027. <br />Growth medium will be used to cover the overburden placed as backfill. Section 12.2 <br />discusses that approximately six inches of growth medium is expected to be available to <br />cover the reclamation areas. Other material containing fines will be used if stockpiled <br />growth medium is not available. The growth medium may be sampled to determine the <br />need for additional soil amendments. Vegetation will be established according to the <br />revegetation procedures presented in Section 12.3. <br />The final reclaimed surface of the East Cresson Mine area will be graded to conform to <br />the storm water runoff patterns discussed previously in Section 5.7.2. A discussion of <br />diversion/conveyance channels and detention basins for the final backfilled East Cresson <br />Mine area configuration also is provided in Section 5.7.2 and Appendix 12, Volume VI. <br />Cripple Creek & Victor Gold Mining Company <br />Cresson Project Mine Life Extension 2 <br />12 -14 <br />