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Reclamation Feasibility Report - Virginia Canyon <br />• <br />Historic Structures <br />There are no historic structures or artifacts at this site. <br />Water Quality Impacts <br />The toe of this waste rock pile is directly in a small tributary drainage of Boomerang Gulch. Most of <br />the water in this drainage currently comes from water concentrated by the road above that flows <br />across the road. The majority of the road drainage passes over waste sites #45 and #144. <br />The waste rock analysis indicates that this material is not high in heavy metals relative to the other <br />sites sampled. However, because of the erosion that has occurred at this site in the past and the <br />likelihood of additional erosion, this pile should be considered a high priority. Results from the 2:1 <br />leachate analysis are given below: <br />Site #46 <br />0 <br />pH <br />s.u. Total Acidity <br />m l As <br />b Cd <br />b Cu <br />b Fe <br />b Mn <br />b Pb <br />b Zn <br />b <br />3.44 45 BDL 39 170 850 BDL 860 6700 <br />Reclamation Measures <br />The preferred reclamation measure for this site is to divert road runoff from waste piles #45 and <br />#144, and remove the waste rock from the active stream channel. A small upland diversion should <br />also be constructed to direct upland flow around the pile. The toe of the pile should be armored with <br />riprap to prevent stream migration into the pile. There is no road into this site, although an old <br />overgrown road ends approximately 150 feet above. <br />Unknown Site #54 <br />Location <br />This small waste pile is located near the headwaters of Seaton Gulch between the roads at the <br />hairpin curve near the junction with the road to Gilson Gulch (Figures 3 and 32). The mine waste <br />pile was sampled as site # 54. Site #54 is located at LAT. N39145'27.9", LONG. W105° 30'49.6". <br />The estimated volume of mine waste is 300 cubic yards. <br />Historic Structures <br />There are no historic structures or artifacts at this site. <br />Water Quality Impacts <br />This waste rock pile is eroded by drainage from the road. The waste rock is low in leachable metals <br />relative to the other sites tested in Virginia Canyon. There is also some vegetation on the waste <br />rock where a shallow soil cover has been deposited. However, drainage from the road has been <br />observed to flow across the pile and erode the near vertical portion of the pile adjacent to the road <br />cut at the lower crossing. Most of this erosion has been observed to occur in the past few years due <br />to changes in the road drainage pattern. Results from the 2:1 leachate analysis are given below: <br />cita itre <br /> <br />pH <br />S.U. Total Acidity <br />m /I As <br />b Cd <br />b Cu <br />b Fe <br />b Mn <br />b Pb <br />b Zn <br />b <br />3.81 21 BDL BDL 32 BDL BDL 1500 520 <br />58