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GENERAL39441
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Last modified
8/24/2016 7:58:53 PM
Creation date
11/23/2007 10:10:18 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981025
IBM Index Class Name
General Documents
Doc Date
11/23/1998
Doc Name
PROPOSED DECISION & FINDINGS OF COMPLIANCE FOR RN3
Permit Index Doc Type
FINDINGS
Media Type
D
Archive
No
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The coal was then unloaded into a truck dump bin/60-ton hopper on the west side of the <br />Roaring Fork River and subsequently conveyed over the river to a surge bin located adjacent to <br />the railroad spur where coal was loaded directly into the cars. <br />The coal refuse disposal area was located about 1,500 feet east of the above- mentioned wash <br />plant. Coal refuse from the wash plant system, as well as underground development waste, <br />was disposed of at this location. <br />On July 31, 1984, the North Thompson Creek Mines filed for temporary cessation of <br />operations with the Division. From that time [o present, a minimal staff has been maintained <br />either on site or at other offices in order to maintain compliance with the regulations and <br />maintain any sttvctures or other facilities that are required. <br />Reclamation of the mine and loadout facilities has involved two phases: an interim and a final <br />phase. The interim reclamation phase was ongoing and was designed to add to stability and <br />aesthetics during mining and to provide an opportunity for testing and improving revegetation <br />techniques. <br />The specified goals of interim reclamation at the mine site were to stabilize slopes and prevent <br />erosion, improve wildlife habitat, and beautify the area. The interim plan at the mine site <br />included incremental seeding of the refuse area as the pile was constructed. The first <br />increment was seeded in 1979. <br />The goals of the interim reclamation plan for the loadout were to minimize visual impact and to <br />prevent the topsoil pile from becoming contaminated. Visual impact was minimized through <br />revegetation which involved the planting of native and exotic ornamental species. <br />Revegetation commenced in 1480 and was in a state of maintenance by 1982. Topsoil was <br />protected from possible sources of contamination by relocating the pile to a protected area. In <br />1981, the topsoil stockpiles were reshaped, fertilized and planted to protect them against <br />erosion and contamination. Additional protective measures, including drainage control and <br />dust suppression, were used to protect stockpiles located near coal loading structures. <br />Final reclamation of the refuse area was completed in 1986. The reclamation included <br />regrading the top bench and covering the refuse with one foot of cover. Some of the soil used <br />to cover the refuse pile was imported, because topsoil was not saved during the early years of <br />mine operation. <br />In 1987, the rest of the mine site was reclaimed. The surface facilities were removed and the <br />portals, shafts, exploration holes, and wells were sealed. On April 28, 1988, a discharge of <br />iron-laden water was discovered entering the creek. The discharge was traced back to the No. <br />1 Mine portal seal and adjacent airshaft, which were leaking as a result of increased hydrostatic <br />pressures as the ground water was allowed to return to its equilibrium level following the <br />cessation of pumping. <br />The backfill in front of the portal seal was excavated to expose the seal and airshaft. Two <br /> <br />
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