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West Elk htlne <br />Following the completion of ventilation seals on the l ONE and 11NE longwall panels, this area has <br />become the NE Panels Sealed Sump. MCC utilizes the sealed sump as a large volume mine water <br />storage area and will pump the water out of the mine through one of the boreholes to Sylvester <br />Gulch. The smaller borehole will serve as a recirculation loop to the sump and the two 20-inch <br />cased boreholes will serve as alternate recirculation boreholes and/or boreholes for water level <br />indicators. Refer to the Probable Hydrologic Consequences section of the permit for additional <br />discussion of the sumps. <br />The treatment facilities will include a dewatering pump station and treatment building, <br />presedimentation basin, decant return basin and pump station, sludge drying lagoons, and finishing <br />pond. A detailed discussion of each facility is provided in Exhibit 69, Sylvester Gulch Facilities <br />Area. <br />Temporary Bathhouse <br />Facilities necessary to house additional personnel for E Seam construction and development <br />work aze planned to be installed near Shaft #1 in Sylvester Gulch in late April and be completed <br />in late May 2005. These facilities will be temporary in nature and designed to be removed when <br />additional staffing is no longer required for E Seam development and construction needs. <br />All construction and installation work will be performed within the existing disturbed areas at the <br />Shafts #1 and #2 area in Sylvester Gulch. There are no plans to change any existing sediment <br />controls, ditches or roads. Surfaces will be restored to the existing compacted roadbase when <br />excavations for conduits and piping are completed. <br />Al] equipment and facilities will be placed on the existing surfaces with no concrete foundations <br />anticipated except for the two electrical transformers required for the facility. These will require <br />a single reinforced concrete slab on grade expected to be approximately 8 feet wide by 12 feet <br />long. This slab will also be removed when additional staffmg is no longer required. <br />Potable water will be supplied using a 10,000 gallon surface tank and pressure pump system. <br />This tank will be supplied with potable water from WEM's existing potable water treatment and <br />storage system via truck haul to Sylvester Gulch. <br />Waste water from the facilities will be stored in a plastic buried septic (closed) tank with an <br />approximate capacity of 10,000 gallons. This tank will be periodically pumped and the waste <br />water hauled to WEM's existing waste water treatment facility as needed. <br />Four modular bath/changing units and one modulaz office unit will be placed at the site west of <br />Shaft #1 on the same level as shown on MCC drawing S52SG005 and Map 54. Electrical <br />distribution panels for the facilities will be housed in a skid mounted steel enclosure. Water <br />supply equipment will be housed in a second skid mounted steel enclosure. Electrical service <br />will generally be supplied via conductors within buried conduits. Potable water piping and waste <br />water piping will be a combination of buried and surface piping. <br />Construction of the service infrastructure is expected to occur in late April and eazly May 2005. <br />Z.OS-1Z Revised June 2005 PRIG; Aev. January 1006; Rev. March 2006; Rev. Apri11006 PRIO, May 1006 PRIO <br />