2017-08-08_REVISION - C1981010 ‎(3)‎

• Permit No: C1981010
• IBM Index Class Name: Revision
• Doc Date: 8/8/2017
• Doc Name: Application
• From: Trapper Mining Inc
• To: DRMS
• Type & Sequence: SL19
• Email Name: RAR
• Email Name: DIH
• Media Type: D
• Archive: No

w
Table 1.4-1. Summary of Trapper Mine SL -19 Phase II pre -mining sediment load demonstrations.
Table 1.4-2. Summary of Trapper Mine SL -19 Phase II post -mining sediment load demonstrations.
Average
Average
Slope
Average
Time
Representative
Runoff
Reclaimed
Area AMC II AMC III Erodability Control Length
Slope
of
Block Area
Volume Sediment
Blockacres)
CN CN Factor (K) Factor (C) (feet)
/6)
Concen.
(acres)
(ac -ft) (tons)
A,F,K&Z-AB
376.1 48.0 68.2 0.25 0.050 675
15.3
0.191
20
0.683 23.8
2009-2013
15.3
0.191
20
1.338 9.6
2009-2013
Table 1.4-2. Summary of Trapper Mine SL -19 Phase II post -mining sediment load demonstrations.
M:\Bond Release\SL-19 (Ph2)\SL-19 Table 1.4-1 Sedcad Summary.xls
Average
Slope
Average
Time
Representative
Runoff
Reclaimed
Area AMC II AMC III Erodability Control
Length
Slope
of
Block Area
Volume Sediment
Block
(acres CN CN Factor (K) Factor (CP)
(feet)
(%)
Concen.
(acres)
(ac -ft (tons)
A,F,K&Z-AB
376.1 61.0 78.8 0.25 0.014
675
15.3
0.191
20
1.338 9.6
2009-2013
0.009 (Modified)
M:\Bond Release\SL-19 (Ph2)\SL-19 Table 1.4-1 Sedcad Summary.xls