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RULE 2 - PERMITS <br />restoration of disturbed areas to a condition and configuration consistent with conditions which <br />• existed prior to mine development. The following sections discuss the details of the various <br />components of the hydrologic.protection plan. <br />Components of Hydrologic Protection Plans <br />The hydrologic protection plan outlines specific measures for PSCM that will be taken to: <br />• Avoid acid or toxic drainage <br />• Prevent additional contributions of suspended solids to area drainages <br />• Control runoff and erosion <br />• Protect or replace affected water rights <br />• Restore approximate pre- mining recharge capabilities <br />Specific prevention, control, and mitigation measures will include limiting the area of surface <br />disturbance; construction, operation, and maintenance of an effective drainage and sediment control <br />system; controlled collection, storage, use, and recycling of mine drainage; and effective <br />reclamation of surface disturbance areas and restoration of surface drainage patterns. In addition to <br />descriptions of specific hydrologic control and mitigation measures, compliance with specific <br />applicable design standards and requirements are addressed and potential adverse hydrologic <br />consequences specific to the site are identified in the Probable Hydrologic Consequences (PHC) <br />determination. <br />• Protection of Surface Water Ouantity and Ouality <br />PSCM has incorporated specific control and mitigation measures in the proposed mining, <br />processing, and reclamation plans to effectively prevent or minimize significant mining- related <br />impacts on surface water quantity and quality. Surface water systems will be protected by limiting <br />surface disturbance; controlling surface runoff and erosion; handling earth materials, any ground <br />water discharges, and runoff in a manner that minimizes the formation of acidic or toxic drainage, <br />prevents additional contributions of suspended solids to streamflow outside of the permit area, and <br />otherwise prevents pollution of surface water. As needed, surface water treatment facilities may <br />also be used to protect surface water. <br />PSCM's mining operations and related activities have the potential to affect surface water quantity <br />through modification of surface runoff characteristics and increased sediment contributions from <br />surface disturbance areas; consumptive use of surface water for mining operations and support <br />activities; any discharge of mine water to the surface system; and discharge of sediment and other <br />potential pollutants from mining- related surface activities. Mining and related operations may also <br />affect surface water quality by modifying surface water chemistry, altering pH, and increasing <br />concentrations of TSS, TDS, and specific chemical constituents. Specific activities, identified in the <br />Probable Hydrologic Consequences, which may potentially impact surface water quantity and <br />quality, include the following: <br />• Removal of vegetation and soil materials from disturbance area <br />• • Realignment and culverting of portions of small ephemeral channels or ditches <br />• Surface placement of coal (stockpiling) <br />• Operation of drainage and sediment control structures <br />PSCM Permit App. 2.05 -95 Revision 03/05/10 <br />