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• <br />TAB 16 <br />HYDROLOGIC RECLAMATION PLAN <br />Introduction <br />The following hydrologic reclamation plan (HRP) focuses on practices which will be <br />conducted to minimize the impact of operating end reclaiming the Hayden Gulch Terminal, <br />l nc. (HGT) Loedout facility on the hydrologic balance. The HRP also discusses monitoring <br />commitments es they relate to determining impacts. Where possible, reference has been made <br />to those chapters which contain details regarding certain practices. <br />Practices Employed to Minimize Impacts to the Hydrologic System <br />Ground Water. No aignif icent additional lend disturbance within the HGT Loedout facility <br />permit boundary is anticipated for the life of operation. Based on information presented <br />in the Hayden Gulch Mine Permit Application Package (PAP), no acid or toxic materiels are <br />utilized or present within the facilities permit boundary, hence, special handling of <br />materials is not anticipated. In addition to bac kfilling end grading methods discussed in <br />• Tab 18 of this PAP, topsoiling end revegetation plans outlined in Tabs 19 (Soil <br />Reconstruction) end 20 (Revegetetion Plan) will enhance the potential for establishing <br />reclaimed areas that exhibit similar infiltration rates end recharge capacities to <br />pre-facility operating conditions. Reseeding and mulching of redistributed topsoil will <br />augment moisture retention and infiltration rates, and mechanical manipulation of the <br />retopsoiled, reclaimed facility that became compacted during operation will further aid <br />the percolation of soil moisture downward toward the shallow water table. <br />Tab 14, Protection of the Hydrologic Balance contains an outline of practices that will be <br />used to abandon the two shallow monitoring wells (see Figure 13-1, Tab 13) located at the <br />HGT Loedout facility. These abandonment pr attires will prevent acid or toxic drainage <br />from entering the shallow groundwater, minimize disturbances to the prevailing hydrologic <br />balance, and ensure safety. <br /> Su rf ate 4eter. Details regarding sedimentation Ponds 1 and 2 ere presented in Tab 12, <br /> Facilities. Both ponds ere designed to prevent additional contribution of suspended <br /> sediment to streamflow outside the NGT Loedout facility permit area, end pond designs <br />. <br /> incorporate sufficient detention times to ensure that ell applicable effluent standards <br />1 <br />