2013-04-19_REVISION - M1990057

• Permit No: M1990057
• IBM Index Class Name: REVISION
• Doc Date: 4/19/2013
• Doc Name: 110‎(d)‎ PERMIT APPLICATION
• Media Type: D
• Archive: No

Tailings Storage Volume
Capacity
Total Volume (yd3)
43,000
Freeboard Volume (yd3)
6,790
Net Volume (yd3)
36,210
Net Volume (ft3)
977,670
Net Weight (st)
54,315
Production Rate (st/y)
56,000
Concentrate (11% mass pull)
6,160
Concentrate Shipped (wet st)
6,840
Tailings (89 %) (st)
49,840
Solids ( %)
65%
Water ( %)
35%
Water Reclaim ( %)
90%
Net Tailings Slurry (st)
52,524
Capacity (years)
1.03
Description
Volumes
Cut (yd)
18,000
Fill (yd
23,000
Net Excess (yd
(5,000)
The Leadville Mill
The TSF, as a 110(2) permit, was developed within the existing 4.6 acre TSF area. The
TSF 4.6ac area is shown on Figure 4 -5 with the TSF located within the black line
polygon area south of the mill. The TSF is shown on Figure 4 -6 and the TSF cross -
section is shown on Figure 4 -7. The leak detection system and sump design is shown
on Figure 4 -8.
The facility is a cut and fill structure, requiring about 4,500yd of fill from the existing
TSF OB stockpile east of the existing pond. The 4,500yd represents the excess
cut material stockpiled from the original TSF construction. This material has been
incorporated into the cut and fill balance for the new TSF construction. Table 4 -8
presents the cut and fill balance for the structure. The net operating capacity is
54,000st. The total pond capacity is 22.4ac -ft. Additional expansion requires
increasing the disturbance area beyond the 10ac 110 permit maximum disturbance
and the conversion from a 110(2) permit to a 112 permit.
TABLE 4 -8: TSF IMPOUNDMENT VOLUMES
TABLE 4 -9: TSF CAPACITY
M1990 -057
EXHIBIT C — MILL PLAN
Page 4 -10
Version 1.0 April 2013