1988-04-11_PERMIT FILE - C1981008A (23)

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that will also provide forage and cover benefits to wildlife. Reestablishing native vegetation will eventually crowd it out of the stand, particularly if it is consistently an understory plant. Revegetation will follow the methods described in Revegetation Methods - Irrigated Pasture. Maintenance, monitoring, and management activities are detailed in various sections of Tab 22, Revegetation Plan. The foregoing discussion has been provided to support Peabody's request for approval to disturb land within the buffer zone to a perennial stream. The request is founded on Peabody's commitment to protect the hydrologic balance by minimizing and mitigating the disturbance using the above-referenced engineering design and mining and reclamation plans. Water Rights and Alternative Water Supplies Introduction. Analyses and programs integral to the Water Rights Plan are presented in several sections of the permit. A review of these sections is appropriate. Pit inflow volumes and pit pumpage drawdown projections are discussed in detail and presented in Tab 17, Probable Hydrologic Consequences. Calculations for the impacts of mining discharges on downstream water quality and the shallow ground water quality for water use considerations are also presented in Tab 17, Probable Hydrologic Consequences. Specific ground and surface water monitors for the purpose of verifying drawdowns and changes related to water rights in streamflow volumes are proposed and discussed in Tab 15, Hydrologic Monitoring Program. Finally, the detailed water rights plan which integrates the above-referenced information is presented in Attachment 16-1 to this Tab. Water Rights Protection and Mitigation Plan. The following discussion briefly summarizes the approach to the water rights plan. All ground and surface water rights within a reasonable distance of the Nucla Mine were documented. Pit inflow and pit pumpage drawdown analyses were performed and tabulated. Drawdowns and pit bottom elevations were compared against water righted well production zone elevations to determine which, if any wells, could potentially be impacted by the mining induced drawdowns. Similarly, surface water rights within the one-foot drawdown contours were identified as those surface water rights which could potentially be impacted by the mining induced drawdowns. Drawdown depletion rates were then estimated at the different surface water right locations and replacement rates were determined for each. 16-9 Revised 04/11/88