Laserfiche WebLink
Reclamation Feasibility Report - Virginia Canyon <br />0 Historic Structures <br /> <br />There are no historic structures or artifacts at this site. The timbered adit and door are intact. <br />Water Quality Impacts <br />The waste rock pile at this site has been severely eroded by the stream. Erosion of the waste pile <br />leaves a vertical escarpment, which results in slumping into the stream. This cycle has left only a <br />minor portion of the waste rock in-place. The waste pile also partially blocks an ephemeral tributary. <br />Leaching of the waste rock by surface and groundwater in the ephemeral drainage is likely. Results <br />from the 2:1 leachate analysis are given below. <br /> <br />PH %A LG 1re- 1 <br />Total Acidity <br />As <br />Cd <br />Cu <br />Fe <br />Mn <br />Pb <br />Zn <br />S.U. m l b b b b b b b <br />2.72 560 BDL 83 1400 19000 BDL 28000 16000 <br />Reclamation Measures <br />The recommended reclamation measure for this site is to remove the waste rock. As an alternative, <br />the waste rock can be armored with riprap, wooden or concrete cribbing, or other commercial <br />abutment product. If the pile is left in place, the ephemeral drainage should be conveyed around the <br />pile. The diversion should be deep enough to prevent groundwater flow through the waste rock. <br />Casino Tunnel Site #29 <br />Location <br />This site is located in Seaton Gulch southeast of and across the stream from the Foxhall Tunnel <br />(Figures 3 and 26). The mine waste pile was not sampled. Site #29 is located at LAT. N390 45' <br />24.0", LONG. W1050 31' 00.0". The estimated volume of mine waste is 13,000 cubic yards. <br />19 . 51