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water to the surface facilities. A second centrifugal pump delivers water to the mine for dust control and fire protection. <br /> A second source is a water-line, which runs from a Colorado Yampa Coal Company manhole station 220 feet to a <br /> borehole approximately 170 feet deep, constructed of 4- inch PCV pipe, as shown on Map 24, Surface Facilities. This <br /> line will provide water to the TC/CYCC water system. <br /> TC proposes to install an additional waterline between CYCC and TC. The line will be installed between CYCC's <br /> wash bay and TC's pumphouse. The approximate location of the water line is shown on Map 24, Surface Facilities. A <br /> 40-foot corridor will be disturbed during installation. TC is adding an 8-inch HDPE, 400-foot long waterline between <br /> Location 6 Inspection manhole and the freshwater borehole. A 40-foot corridor will be disturbed during installation. <br /> Mine Water Discharge and Recycle System (Revised - TR09-70, TRIO-73, MR07-216, MR08-230, MR08-231, <br /> MR15-288,MR16-295,MR16-299,TR16-84) <br /> Transfer of mine water to the surface can occur at six locations, the Portal/0-Entry Borehole/Pond D (Sites 109 <br /> (inactive)/005),the Fish Creek Boreholes(Site 115),the l ORT Boreholes(Site 001 under the General Coal Permit), the <br /> 18-Left Shaft Site (connects to Fish Creek Pipeline), and the 19-Right Borehole and 5MN Boreholes (both connect to <br /> 6MN Mine Water Reservoir). Water discharged from the Portal and 0-Entry Borehole (general mine discharge) is <br /> routed through the Area 1 Pit Mine Water Storage Reservoir, with discharge to Sedimentation Pond D prior to <br /> discharging to Foidel Creek at Site 005. Mine discharge water from the Fish Creek Boreholes(SWMD)may be treated <br /> prior to transfer to the mine water system or discharge to Fish Creek at Site 115, or may be pumped back to the Area 1 <br /> Pit for use in the Washplant or discharge through Pond D and Site 005. A treatment system for the IORT (EMD) <br /> Dewatering Boreholes has not been constructed to date, although TC may install a temporary mobile treatment system, <br /> and the IORT Borehole will be connected to the Passive Treatment System. The water can be pumped from this site <br /> directly to the mine water system, to the 6MN Mine Water Storage Reservoir and 6MN Million-Gallon Tank <br /> (connected to the mine water system),to the Passive Treatment System,back to the Area I Pit for use in the Washplant <br /> or discharge through Pond D and Site 005, or direct discharge to Foidel Creek at Site 001, under the Coal General <br /> Permit. Mine water can also be transferred from the 18-Left Shaft Site to the existing pipeline running from the Fish <br /> Creek Water Treatment Facility to the Area 1 Pit. From The Area 1 Pit,this water can then be transferred to any of the <br /> storage or use points previously identified. Mine water from the 19-Right Dewatering Borehole and 5MN Borehole is <br /> transferred to the 6MN Mine Water Storage Reservoir, where it can be routed back to the mine water system through <br /> the 6MN water borehole. With future approvals and modifications, water from the 5MN Borehole could be routed <br /> through a planned passive treatment system for re-use or discharge to the mine water system. <br /> In addition to the primary mine water discharge locations,there is a very limited potential for production mine water to <br /> discharge at the Northwest Mains Ventilation Shaft through a pressure relief/accumulator pipe for the production mine <br /> water system. Although discharge occurred in mid-2005 due to catastrophic failure of both the primary and back-up <br /> pressure relief valves,TC has taken positive steps to assure that this site will not discharge in the future. <br /> TC previously constructed a mine water pipeline from the Fish Creek Water Treatment Facility that ties into the <br /> Barricade Chamber/FCM-2 Boreholes and TORT Water Transfer Pipeline, and has more recently constructed <br /> additional pipelines tying these facilities to the 6MN Mine Water Storage Reservoir and Million-Gallon Tank and <br /> the Area 1 Pit Storage Reservoir. In order to dewater the recently completed Northern Mining District and the new <br /> Western Mining District, TC has, or proposes to complete additional pipelines from the 19-Right Mine Dewatering <br /> Borehole, the 18-Left Ventilation Shaft Installation, and most recently, a proposed secondary IORT Water Transfer <br /> Pipeline parallel to the existing IORT to the Barricade Chamber pipeline. The locations of these pipelines and <br /> associated facilities are shown on Map 24, Surface Facilities. The water pipeline network enhances TC's ability <br /> move either treated or untreated mine water between mine areas and the ability to recycle mine water, thereby <br /> minimizing the volume of supplemental supply water needed to meet mine usage. <br /> Portal and 0-Entry Borehole and Transfer Pipeline (MR08-230, MR08-2311 — Water from the mine water <br /> system can be discharged from the Mine Portal, where it flows by gravity or can be conveyed by temporary <br /> pipeline to Ditch D-2 and the Portal Sump. A transfer pump in the Portal Sump moves the water through a buried <br /> HDPE transfer pipeline to the Area 1 Pit Mine Water Storage Reservoir. Water can also be transferred from the <br /> mine water system to the Area 1 Pit through the 0-Entry Borehole and pipeline. The 0-Entry Borehole is a 12-inch <br /> (maximum) diameter steel-cased borehole extending from the 0-Entry Fan Pad (location shown on the Surface <br /> TRI 6-84 2.05-50 08/20/18 <br />