Laserfiche WebLink
H. Transfer of Wells <br />No specific approvals granted. <br />Discharge of Water into an Underground Mine <br />This section does not apply as New Horizon North is a surface mine. <br />Stream Buffer Zones <br />No changes to the stream buffer zones were proposed in the PR -1 application. <br />K. Probable Hydrologic Consequences <br />The most current analysis of the probable hydrological consequence was done for <br />the NHN Mine in the issuance findings document dated May 4, 2012. <br />PR -1 is proposing to install a single culvert for the North Haul Road to cross <br />Meehan Draw. It is the conclusion of the Division that minimal impacts on the <br />local geomorphology will result from the installation of the culvert in Meehan <br />Draw. Overall, a reduction of elevations and slope lengths of mined areas is <br />predicted. Slope lengths and times of flow concentration increase over the long <br />term. The additional runoff and loss of topsoil structure will increase the erosion <br />potential on disturbed areas. To ameliorate these effects, WFC will contour rip <br />and mulch disturbed areas to lessen the erosion potential until vegetation is <br />established and the topsoil structure is redeveloped. <br />IV. Topsoil <br />Topsoil salvage and replacement is described in Section 2.05.4(2)(d) of the permit. <br />Map 2.05.4(2)(d)-1 shows the proposed replacement thicknesses for topsoil. <br />The Division proposes to approve the revised reclaimed topsoil locations. The total area <br />and thickness of the topsoil will remain the same. The new locations will better <br />accommodate a center pivot and side roll irrigation systems. These irrigation systems <br />are designed to support the post mining land uses of intensively managed irrigated <br />pasture and irrigated pasture. <br />V. Sealing of Drilled Holes and Underground Openings <br />The Division will require that each hole, well or other underground opening be capped, <br />sealed, backfilled, or otherwise properly managed (4.07.3). <br />VL Use of Explosives <br />No changes to use of explosives were proposed in the PR -1 application. <br />15 <br />