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workings, discharging on the mine floor, the fines settle -out and the decant drains to the decant sumps, where <br />submersible pumps recycle the water back to the surface. The water is retained by coal barriers, as shown on the <br />underground mine workings map. The barriers for the refuse storage areas are minimum 250 -foot wide coal <br />barriers between the EMD and the Northern Mining District, and the SWMD and the Western Mining District, <br />respectively. These barriers currently retain accumulated water from mine inflows and contain a submersible <br />pumps at the low points for mine dewatering. These pumps will be used to recycle water back to the surface for <br />washplant make-up water or underground for dust suppression, or the water will be discharged directly to Foidel <br />Creek. TC's existing discharge permit was modified to allow discharge directly to Fish Creek. Water from the <br />EMD and SWMD is pumped to the surface at the 10 -Right Borehole and Fish Creek Borehole locations, <br />respectively. <br />The water recycling/discharging system required minor changes to the existing water distribution system. Water <br />pumped from the mine exits the mine at Site 109. From this point, the water is piped to the Area 1 Pit where it is <br />retained to allow for settling of sediments and aeration. A pump station has been installed towards the south end of <br />the pit. Installation involved burying forty -foot beams under the road and extending them over the pit. A platform <br />was constructed on the beams extending over the pit. A submersible pump, along with hosing and piping, is <br />suspended from the platform into the pit. A winch installed on the platform assists in setting the pump at the <br />desired elevation. A second pump was added to provide make-up water for Washplant II. Control equipment for <br />this second pump was installed at the existing pump platform location <br />The water pumped from the Area 1 Pit can go in one of four directions, or a combination of them: 1) Pit to <br />Washplant I; 2) Pit to Washplant II; 3) Pit to mine water recycling line; and/or 4) Discharge to Foidel Creek. The <br />water pumped from the pit is piped to a de -sander, located at an old well site. From this point it is piped to one or <br />both of the washplants or piped over and tied into the existing mine water line. A line has been installed from the <br />de -sander back to the pit so that the back-flush water can be returned to the pit. The location of the lines is shown <br />on Map 24. The trenches were dug with a backhoe or trackhoe. During the excavation process suitable plant <br />growth media was removed and windrowed adjacent to the trench and then replaced on top of the sub -soils returned <br />to the trench. <br />TR18-90 2.05-97.8 04/05/18 <br />