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4.05 HYDROLOGIC BALANCE <br /> <br />4.05.1 General Requirements <br />The underground mining activities at the Coal Gulch 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 is outlined in Section 2.04.7. <br />Information in this Section will provide an assessment of surface water, <br />drainage patterns, and geology. In addition, Section 2.05.6 details the <br />specific technique which Peerless Resources will implement to minimize <br />changes to the hydrologic balance. <br />• The post-mining land use as described in detail under Section 2.04.3 <br />will be undeveloped use as defined in Section 1.04, Definitions. <br />Although classified as undeveloped, the land will have the capability of <br />providing shelter and feed for wildlife. Changes in the hydrologic <br />balance will be minimized so that any post-mining land use will not be <br />adversely affected. <br />Water quality standards and effluent limitations at any coal 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 a <br />sedimentation pond. Water quality control measures are discussed in <br />detail under Sections 2.05.4 and 2.05.6. <br />• <br />4.05-1 <br />