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Reclamation Feasibility Report - Virginia Canyon <br />Reclamation Measures <br />The portion of these two waste rock piles that is located in the stream channel should be removed. <br />The removed waste rock can be hauled off-site or can be consolidated with the main pile of the <br />Brighton mine. Virtually all the mine waste at site #108 will have to be removed. The removal area <br />will have to be amended with ground limestone and lime before revegetation. Diversion ditches <br />should be constructed to intercept upland runoff from the steep slopes above the mine sites. The <br />site should be investigated in detail before choosing the final reclamation method. <br />Inter Ocean Mine (Sites #45 and #144) <br />Location <br />This site is located in Boomerang gulch immediately below the middle road bisecting the stream. <br />This site consists of two waste rock piles designated as sites 45 and 144 (Figures 3, 4 and 16). Site <br />#45, lower pile, was sampled. Site #144 was not sampled. Site #45 is located at LAT. N390 45' <br />28.9", LONG. W1050 31' 15.9". The estimated volume of waste rock at site #45 is 4,600 cubic <br />yards. The estimated volume of waste rock at site #144 is 3,200 cubic yards. <br />Historic Structures <br />No historic structures or debris was observed at these sites. This waste pile is very visible from the <br />main Virginia Canyon road. <br />Water Quality Impacts <br />Both waste rock piles are severely eroded. The principal source of water that erodes these waste <br />piles is road drainage. The road ditch has been observed to carry water from the road above, <br />around the nearby curve, then a portion of the flow crosses the road and flows down the mine waste <br />pile. Gullies up to 12 feet in depth have been cut in the waste piles. The mine waste is eroded <br />directly into Boomerang Gulch. Most of the eroded waste rock settles on the debris fan at the upper <br />end of the Rattler Tunnel waste pile. <br />The waste rock piles are highly cemented with metal sulfate salts. Upon wetting, these salts are <br />readily dissolved. During dry periods, water moves to the surface, precipitating metal salts on the <br />37