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sampling program are presented in the Annual Reclamation and Hydrology Reports <br />beginning in 1983 to the present. <br />• As discussed in Section 2.05.x, Colowyo will use various surface manipulation <br />techniques on the topsoil after its redistribution as one method to prevent <br />excessive wind or water erosion. <br />No special treatment of coal processing waste is necessary since none will be <br />produced. See Section 4.10 and 4.11. <br />With a few exceptions, Colowyo plans to have all surface runoff from the <br />disturbed area pass through sedimentation ponds. Sedimentation ponds are <br />discussed in detail under Section x.05.6, and their location is shown graphically <br />on the Hydrology - South Map (Map 12) and the Hydrology - North Map (Map 11). <br />Exceptions include such areas as topsoil stockpiles located outside of the <br />Section 11 ditch (MR-15), topsoil stockpiles located along the paved haul road <br />(MR-18), East Taylor holding pond and pump station (TR approved on November 19, <br />198x), raw and potable water lines, and railroad loop. Erosion and sediment <br />control is achieved by protection with vegetation or rock. The demonstration <br />presented in MR- 1S provides a representative example of how vegetative cover <br />can provide for sediment control. <br />• The Administration and Security buildings have associated paved parking areas <br />which generate no sediment. <br />Colowyo employs various methods to manage water which periodically collects <br />internal to the mining operation and does not reach sedimentation ponds. Various <br />sumps, ditches, pumps, hoses and pipes, etc. will be employed to control water <br />within pits and/or route water between pits. The ultimate destination of such <br />water will be for operation's use (dust control, etc.), evaporation or seepage <br />into the backfilled spoil areas. <br />In addition to the mining, reclamation and treatment methods described and <br />referenced in this Section, further protection of the hydrologic balance will be <br />established by anon-going plan for monitoring potential changes in surface water <br />quality and quantity and groundwater quality. This monitoring plan is described <br />under Section 4.05.13 and the monitoring locations are graphically shown on water <br />Monitoring Sites for Permit No. CO-019-e1 (Map 37). Excess spoil valley fill <br />areas are located downdip of mining and reclamation areas and periodic monitoring <br />for seeps and springs and periodic monitoring of piezometer wells will detect the <br />formation of spoil springs. <br />• <br />RBVLSbn Submitted 6 ' ~ -0 ~ <br />a n s _~ Revision ~• T R- s l <br />