2010-06-04_PERMIT FILE - C1982056A (9)

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inch polyethylene LP line will be buried from the tank to the new bathhouse, and will include a vaporizer located some 50 feet from the tank. The Fish Creek Dewatering/Treatment facilities will be used for discharging mine water. Facilities to be constructed at the Fish Creek Borehole Area are shown on the following maps; Map 26, Fish Creek Borehole Area Facilities and Access Road Map 27, Fish Creek Borehole Area Access Road Profile Map 28, Fish Creek Borehole Area Access Road Profile and Typical Cross - Sections Map 32, Fish Creek Borehole Settling Pond Plan view and Cross - Sections The mine water discharge wells will be required in 1989. Total disturbed area required for the above facilities would be less than 10 acres. Access to the sites would be as shown on Map 29, Reclamation. Standard maintenance procedures, such as preventive maintenance programs, painting, and lubrication shall be utilized throughout the life of all the structures. All facilities will be removed, and the area reclaimed to its original use at the completion of mining activities, except to the extent that alternative postmining land uses are approved. EASTERN AND NORTHERN MINING DISTRICTS Mining in the Eastern and Northern Mining Districts (EMD/NMD) required installation of a new dewatering facility and three fans. One of the fans (0 -Entry Fan — Robinson 85,000cfm) was installed in the 0 -Entry, approximately 600 -800 feet inby the portal mouth (MR94 -107). The location of this fan places it within the current Surface Facilities area, therefore, no new disturbance was associated with fan installation. The approximate location of the fan is on the bench between the Stoker Coal Storage and Materials Storage areas, as shown on Map 23. This fan is of similar size and capacity as the existing main mine fan. Two additional fans (EMD Fan Installation — Jeffrey 600,000cfm and Industrial Air 150,000cfin) were installed in 1996 -1997. The location of the fans is shown on Maps 17A, 18A, and 23. The fans were installed at the end of the 9 -Right Panel, and are used to augment the main mine fans. Installation of the fans required construction of an access road into the site, installation of a diversion ditch upslope of the construction site, establishment of a topsoil stockpile, grading of a construction site, extension of the existing powerline to the site, boring of ventilation shafts, and installation of the fans and associated ancillary equipment. Approximately 2 acres were disturbed in conjunction with upgrades to, and extension of, the road and construction of the fan site. A new dewatering facility was constructed in 1995 -1996 at the location shown on Maps 17A, 18A, and 23, with the addition of a second dewatering well in 2008. The facility is located above the lowest point in the EMD. The facility currently consists of an access road, dewatering wells (TORT Dewatering Wells Nos. 1 and 2), substation and powerline, although the permitted facilities for this site also include a water line leading to settling ponds, two settling ponds, an aeration channel, control building, and discharge point. Discharge from the dewatering boreholes can be pumped directly to the mine water system (via a pipeline to the Barricade Chamber/FCM -2 location), to the 6MN Mine Water Reservoir and Million - Gallon Tank (connected to the mine water system), back to the Area 1 Pit for use in the Washplant or discharge through Pond D (Site 005), or directly discharged to Foidel Creek at Site 001 under the Coal General Permit. The potential exists for installation of a mobile treatment system at this or another location to treat the mine discharge water. At such time as long -term water treatment and a discharge point are established, the existing discharge permit with the Colorado Department of Public Health and Environment will be amended to reflect discharge from this facility. As permitted, this facility would be similar to the Fish Creek Dewatering /Treatment system. Approximately 3.4 acres would be disturbed under a full construction scenario for construction of this facility and its associated access road. • MR08 -230 2.05 -55 11/20/08