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A sedimentation pond is planned to control drainage and sediment from <br />the surface facilities as shown on the Mine Facilities Map (Map 10). <br />The details for this sedimentation pond are set forth in Sections 4.05.6 <br />and 2.05.6. <br />The embankments, impoundments and associated structures will be <br />revegetated. Routine inspections of these structures will be conducted <br />periodically as required by Section 4.05.9. <br />The sedimentation pond impoundment will be maintained according to the <br />specifications set forth in this part. Maintenance procedures for the <br />sedimentation pond may include mowing and cutting of excess vegetation <br />growth for the purpose of facilitating inspections and repairs and will <br />include keeping ditches, culverts, spillways, and other outflow <br />structures free of debris. All combustible material, other than mulch <br />or other material needed for erosion control and surface stability, will <br />be removed. <br />• <br />Plans for any modification of the sedimentation impoundment or dam will <br />be submitted to the Colorado Mined Land Reclamation Division, and no <br />modification will begin until the approval of the plans has been granted <br />unless such modification is necessary upon an emergency basis for public <br />health or safety, or if the environment is endangered. <br />4.05.10 Underground Mine Entry and Access Discharges <br />No gravity discharge of water from the mining operation is anticipated <br />to occur. The Bear Coal Company currently does not discharge water from <br />either the Bear No. 1 or No. 2 Portals. In addition, no water has ever <br />been discharged from the abandoned workings found in Section 17 known as <br />the Edwards Mine. <br />If groundwater is encountered, it will be routed to an underground sump, <br />• where it might be used for dust control in the underground mining. <br />4.05-8 <br />