Laserfiche WebLink
• MINING AND RECLAMATION PLAN January 1986 <br />MT. GUNNISON NO. 1 MINE Revised April 1989 <br />Revised October 1989 <br />3.3.1.4. Hydrologic Protection Durin4 Operation <br />Once construction of the mine facilities was completed and mining <br />operations commenced, surface facilities site runoff was diverted <br />into the surface site sedimentation ponds (see Section 3.3.2 of <br />this Chapter). <br />Any discharge of water from the ponds to the North Fork of the <br />Gunnison River is in accordance with effluent limitations and <br />monitoring requirements stipulated in the NPDES permit. Appendix <br />F in Appendix B-9 to this Mining and Reclamation Plan. Should <br />monitoring data indicate a violation of any effluent limitation <br />specified, WECC will notify the State, and proceed immediately to <br />correct the violation. <br />Management of the refuse disposal areas and sedimentation ponds to <br />minimize water pollution are the major hydrological concern during <br />operations and are discussed more thoroughly in Sections 3.3.3 and <br />3.3.4. <br />During operations, water is discharged from the mine. The water <br />drains from the mine in a pipe into the sedimentation ponds through <br />• the surface drainage system. No appreciable amounts of water <br />discharges from the portal tunnels. The discharge water is <br />treated, if necessary, to meet water quality standards. Should <br />more groundwater be encountered than anticipated, prior to <br />discharge of excess mine water, an analysis of anticipated water <br />quality and quantity and it's effects on the receiving stream will <br />be provided. <br />The F, E and B coal seams are not of an acid or iron producing <br />nature. The discharge from the mine has a minimal effect upon the <br />existing hydrologic balance. See Section 2.0 for a specific <br />discussion of the effect of the mine on the hydrologic balance. <br />The loadout facilities consisting of the silo, loadout conveyor, <br />and loadout building are designed to prevent polluting the river. <br />Transfer points at the silo and the loadout building are enclosed, <br />and have dust suppression systems (water sprays). The loadout <br />conveyor is in an enclosed gallery where it crosses the river and <br />the CDOH highway bridge. The loadout building is totally enclosed <br />and runoff from the area impounded within the limits of the <br />facility where it is treated before discharging. <br />L J <br />3-53 <br />