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Reclamation Feasibility Report - Virginia Canyon <br />from the Williams and Rio Grande shafts. Site #1 is located at LAT. N39146' 16.6", LONG. W1050 <br />• 32'22.5". Site #2 consists of the waste rock pile from the Crown Point and Virginia Mine. Site #2 is <br />located at LAT. N390 46' 14.2", LONG. W1050 32' 22.4". <br />• <br />Historic Structures <br />A stone building is located adjacent to the capped Williams shaft. A wooden loadout bin is located <br />east of the stone building adjacent to the County road. The wooden collar remains at the Crown <br />Point and Virginia shaft. <br />Water Quality Impacts <br />The principal water quality effect from this site is from erosion of the waste rock. The toe of the <br />waste rock pile is in the stream channel, which at this location, is the road drainage ditch. There are <br />deep gullies on the face of the Crown Point and Virginia waste pile. There is probably some <br />leaching of the waste rock that occurs during snowmelt and following long duration, low intensity <br />rainstorms. The estimated volume of the waste piles is 58,000 cubic yards. <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 />surface. The waste rock is high in copper, arsenic and iron. The waste rock from both sampling <br />sites had a very low pH and very high total acidity. Results from the 2:1 leachate analysis are given <br />below: <br />Site #1 <br />pH Total Acidity As Cd Cu Fe Mn Pb Zn <br />S.U. m /I b b b b b b b <br />2.16 4750 1500 65 14000 930000 1400 3200 11000 <br />• Site #2 <br />24