Laserfiche WebLink
Reclamation Feasibility Report - Virginia Canyon <br />A structural cap should be place over the shaft at site #13. The cap should be designed to prevent <br />• most water from entering the shaft. It is believed that most if not all of the drainage from sampling <br />site DM-2 would be eliminated. <br />Two Brothers/Bald Eagle Mine (Site #15) <br />• <br />Location <br />This site is located approximately 2.0 miles up the mainstem of Virginia Canyon (Figures 3, 11 and <br />12). The mine was recently operated under a DMG permit. The waste pile is the largest and one <br />of the most prominent in Virginia Canyon. The waste pile was sampled as sites 15A and 15B. The <br />pile was sampled as two separate units because there were visible differences between the newer <br />waste rock on the top of the pile and the older material on the outslope of the pile. Sample #15A <br />was collected from the top of the pile and #15B was collected from the outslope of the pile. The <br />site is located at LAT. N390 45'42.4", LONG. W1050 31'58.1". The estimated volume of waste <br />rock at the site is 200,000 cubic yards. <br />Historic Structures <br />The structures at the site are mostly associated with the recent mining. There are two wooden <br />structures near the portals that may be near 50 years old; the minimum age to be considered <br />historic. <br />Water Quality Impacts <br />This site is perhaps the most complex in the Virginia Canyon watershed. Water quality sampling <br />indicates that a large heavy metals load comes from this area. This mine site is bracketed by <br />water quality stations VC-4 and VC-6. A large part of the increased loading measured in the <br />August 2000 thunderstorm likely comes from the waste rock piles sampled as sites 13 and 14. <br />However, during the spring 2000 sampling, there was no visible flow from waste piles 13 and 14 <br />and the mine drainage from sampling site DM-2 accounts for a small portion of the increase in <br />loading. <br />31 <br />Figure11. Two Brothersitiaw tagie tare ttiu) iuvnil la