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Williams Fork River Bank Stabilization <br />During the spring runoff of 1984, the Williams Fork River overtopped its banks, resulting in bank erosion. in order to <br />protect the riverbank and mine facilities, EC placed riprap on selected sections of the Williams Fork River bank. <br />Details of the bank stabilization plan can be found in the United States Army Permit (33CFR325) located in Exhibit 2, <br />Other Required Permits. <br />No. 5 Portals <br />The No. 5 portals were constructed in 1970 specifically to access the "F" coal seam. The portals consist of four (4) <br />entries into the "F" seam outcrop. The portals were primarily used for ventilation supply and personnel transport. <br />Presently, the portals have been permanenty sealed, partially back-filled, and no longer provide service to the mine. <br />No. SA Portal <br />The SA portals and associated facilities are located in the highwall of an abandoned strip pit. There are four (4) portal <br />entries at the No. SA portal, two are for return air, one is for intake air, and the fourth contains the conveyor belt. <br />Main ventilation fans for the No. 5 and 6 mines aze located at the two (2) return portals. One new opening to the <br />surface is planned to improve airflows. A shaft will be developed from the surface to the No. 5 and No. 6 mines. The <br />shaft will be located above the existing No. SA portals within the existing sediment control system. Portal heaters <br />may be installed on this shaft. (Note: The shafr will be reclaimed along with the No. SA portals.) For location of the <br />ventilation fans, refer to the No. 5 Mine Plan Map (Map 23). Oil storage tanks, a rock dust tank, a supply yard, and a <br />sediment pond are located in the No. SA portal area. Drainage and sediment control techniques are discussed later in <br />[his section. <br />Permit Revision 04-34 2.05-13.1 Revised 7/2/04 <br />