2018-05-10_REVISION - X201723402

• Permit No: X201723402
• IBM Index Class Name: Revision
• Doc Date: 5/10/2018
• Doc Name: Application
• From: Trapper Mining Inc
• To: DRMS
• Type & Sequence: AM1
• Email Name: TNL
• Media Type: D
• Archive: No

• WILLIAMS FORK LAND COMPANY
ESTIMATE OF RECLAMATION COSTS FOR EXPLORATION DRILLING
WEST PANEL STATE EXPANSION AM -1
TABLE 1:2018 ESTIMATE OF RECLAMATION COSTS FOR EXPLORATION DRILLING
Hole ID
Depth
of Drill Hole
(ft)
Core Plugged Total Drill Hole Cement Driller Labor
Depth Hole Depth Depth Volume Cost Cost
(ft)' (ft)2 (ft) (ft3)2 ($10/ft3)3 ($)4
Drill Pad
Area
(acres)5
Drill Pad
Disturbed Depth
(ft)
Disturbed Pad
Volume
(yd)
Pad
Regrading
(Backfill)6
Pad
Topsoil
(Replacement)'
Access Road Access Road
Length Area
(ft) (acres)8
Access Road
Disturbed Depth
(ft)
Disturbed Road Access Road
Volume Regrading
(yd) (Backfill)'
Access Road
Topsoil
(Replacement)10
Revegetation Revegetation Revegetation Revegetation Total
Seeding Labor Failure Failure Labor Reclamation
(Costs)" (Cost)1Z (cost)" (Cost)'" (Costs)
18_691_29_1
90
90
0
90
15.9
159
700
0.23
5.0
1,852
10
350
0
0.00
1.5
0
0
0
$7
100
3
50
$2,179
18_691_29_2
155
155
0
155
24.3
$ 243
$ 700
0.23
5.0
1,852
$810
$350
580
0.20
1.5
483
$282
$423
$13
$100
$6
$50
$2,977
18_691_29_3
145
145
0
145
23.0
$ 230
$ 700
0.23
5.0
1,852
$810
$350
770
0.27
1.5
642
$374
$561
$15
$100
$7
$50
$3,198
18_ 691_ 29_Gravell
60
0
60
60
9.0
$ 90
$ 700
0.23
5.0
1,852
$810
$350
0
0.00
1.5
0
$0
$0
$7
$100
$3
$50
$2,111
18_ 691_ 29_Gravel2
60
0
60
60
9.0
$ 90
$ 700
0.23
5.0
1,852
$810
$350
0
0.00
1.5
0
$0
$0
$7
$100
$3
$50
$2,111
18_691_29_Gravel3
60
0
60
60
9.0
$ 90
$ 700
0.23
5.0
1,852
$810
$350
0
0.00
1.5
0
$0
$0
$7
$100
$3
$50
$2,111
18 691_29_Grave14
60
0
60
60
9.0
$ 90
$ 700
0.23
5.0
1,852
$810
$350
0
0.00
1.5
0
$0
$0
$7
$100
$3
$50
$2,111
Total
630
390
240
630
99.2
$ 992
$ 4,900
1.61
5.0
12,963
$5,671
$2,450
1,350
0.46
1.5
1,125
$656
$984
$62
$700
$31
$350
$16,797
Notes:
1 30 ft. added to core hole depth.
2 Assume 7.875 -inch diameter =0.338 ft.A3/ft.drill hole top 20 ft. core with 4 7/8 -inch diameter = 0.130 ft.A3/ft. Gravel holes drilled 5.25 -inch diameter =0.150 ft.A3/ft.
3 An 80 Ib bag of Sakrete will fill 0.6 ft3. Assume $6.00/ 80 Ib. bag, which equates to $10.00 per cubic foot of hole.
4 Cement and plug labor costs: Assume 2 hours per hole at $350 per hour (current rig, operator and helper rate).
5 Assume drill pad disturbance is 100 feet by 100 feet.
6 Assume D7 SU productivity of 400 Lcy's/hr at $175 per hour
' Utilize a D7 SU tracked dozer. Assume 2 hours per pad at $175 per hour with operator
8 Assume average access road width to be reclaimed 15 feet.
' Assume D7 SU productivity of 300 Lcy's/hr at $175 per hour with operator --
10 Assume D7 SU productivity of 200 Lcy's/hr at $175 per hour with operator
11 Current cost for seed mix is $30 per acre.
17 Assume seed application will take 1 hours at $100 per hour for laborer and pickup.
13 Assume 50% failure rate reseed at $15 per acre.
14 Assume seed application will take 1/2 hours at $100 per hour for laborer and pickup.
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