2013-01-29_PERMIT FILE - C1981022A (3)

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Senior - 2.05.6 with native plant species unless otherwise approved by the DMG and Division of Vlddlife • The operator, to the extent possible, will prevent, control, and suppress range, forest, and coal fires, which are not approved by the DMG as part of the rnanagetnent plan In general, the reclamation plan has been designed to restore and enhance wildlife resource values on reclaimed areas through the use of palatable native plant species in revegetarion and through the return of the majority of the area to the pretnining use of undeveloped lands. Protection of Hydrologic Balance This section describes plans for protettion of hydrologic resources, including surface and ground water quantity and quality, and recharge, storage, and discharge relationships for the pemut and adjacent areas that could potentially be affected or impacted by the existing or proposed mining and reclamation activities. Information in this section was developed in accordance with applicable regulatory requirements. Hydrologic Resource Pmtection - Muting and related activities tray result in: • Temporary changes in runoff and infiltration characteristics for surface disturbance areas • Additional contributions of sediment to surface runoff • Ground water drainage to and storage in underground mine worlongs • • Some dewatering of perched aquifers and localized dewatering of the regional water table aquifer due to direct mining and indirect subsidence related effecu • Mmor modification of infiltration and recharge characteristics in subsidence areas • Limited localized changes in surface and ground water chemistry and quality Based on available information, the potential mitring-related impacts will be localized, temporary, and will not involve any sigtuficant long-terns adverse impacu. The hydrologic control and mitigation measures proposed in conjunction with mining and related activities should effectively mitigate any potential adverse hydrologic impacu. As described in Section 2.04.7, Hydrology Description, OMI researched existing information on the hydrologic environment of the permit and adjacent areas, as well as collecting supplemental hydrologic information in order to accurately characterize existing conditions and develop an overall understanding of hydrologic systems and relationships. The hydrologic protection plaru Gave been developed with consideration of the resource values and relationships described in Settion 2.04.7 and OMI's plans for mining and related aciivities, as outlined in Settiorts 2.05.3, Operation Plans, and 2.05.4, Reclamation Plans. The plans, therefore, reflett site-specific conditions and the nature and extent of anticipated mining related impacts in order to assure effective compliance with the following applicable regulatory requirements and consistency with overall environmental objectives: • Mutintizx disturbances to the hydrologic balance • Prevent material damage ouuide of the pemait area • Support the approved posttnining land use(s) • Meet applicable Federal and State water quality regulations PR04 2.05-73 Revised August 2000