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• Wastes generated at Trapper Mine are placed and stored in a controlled manner in the mine <br />facilities complex. Surface runoff from waste storage drains into the industrial waste pond, <br />preventing degradation of surface and ground waters. Final reclamation of these areas is <br />discussed in Section 4.2. The facilities discussed in this section are shown on the Map M13 series <br />and in Figure 4.3.-1. None of these facilities are scheduled for removal until the coal reserves <br />are exhausted. The removal will be in accordance with the procedures set forth in Section <br />3.1.7. <br />Impoundment H_ <br />Impoundment H was constructed in mid 1975. This dam was constructed similar to the dam for <br />the industrial waste pond. The impoundment is currently in good condition and inspected <br />regularly. This pond controls runoff from the shop and industrial areas. Table 4.3-1 gives <br />characteristic water quality for Impoundment H. <br />This pond is dewatered via a self -dewatering device. The facility is similar in design to other <br />small sediment control facilities located at Trapper (Table 4.8-613, Appendix 9 and U). <br />Alternatively, the water from the pond may be used to suppress dust from haul roads. A pump <br />'dwhk is set-up at the impoundment to fill the road watering equipment. <br />Petroleum Waste Product Bulk Storage Tanks; <br />In April, 1990, Trapper Mine removed all remaining underground tanks (UST) utilized for bulk <br />storage of petroleum waste products. All waste oil is now collected in a 20,000 -gallon surface <br />tank near the lube building. See Figure 4.3-1 on page 4-15. <br />4-17 <br />