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• 4.05 HYDROLOGIC BALANCE <br />4.05.1 General Reouirements <br />The underground mining activities at the Peacock Coal Mine will be <br />conducted to minimize changes in the prevailing hydrologic balance, in <br />both the permit and adjacent areas, and to prevent long-term, adverse <br />changes in the balance that might result from the activities. <br />As a preliminary step in minimizing adverse changes, some hydrologic <br />baseline information has been and is being collected, compiled, and <br />analyzed. The origin of this data, along with a planned monitoring <br />program, is outlined in Section 2.04.7. Information in this Section <br />will provide an assessment of surface water, drainage patterns, and <br />geology. In addition, Section 2.05.6 details the specific technique <br />which Sunbelt will implement to minimize changes to the hydrologic <br />balance. <br />• The post-mining land use as described in detail under Section 2.04.3 <br />will be rangeland as defined in Section 1.04, Definitions. Although <br />classified as rangeland, the land will have the capability of providing <br />shelter and feed for wildlife. Changes in the hydrologic balance will <br />be minimized so that any post-mining land use will not be adversely <br />affected. <br />Water quality standards and effluent limitations at the existing mining <br />operation are regulated by the Colorado Department of Health under the <br />terms of an NPDES Permit, and by the Coal Regulations of the Colorado <br />Mined Land Reclamation Board. The applicable effluent limitations will <br />be met by utilizing treatment methods which will include revegetation, <br />minimizing disturbed areas, sediment retention, mulch, and sedimentation <br />ponds. Water quality control measures are discussed in detail under <br />Sections 2.05.4 and 2.05.6. <br /> <br />4.05-1 <br />