2012-05-25_PERMIT FILE - C1982056A

• Permit No: C1982056A
• IBM Index Class Name: Permit File
• Doc Date: 5/25/2012
• Doc Name: Exploration Drilling Information
• Section_Exhibit Name: Exhibit 52 Exploration Drilling Information
• Media Type: D
• Archive: Yes

1 Assumes 5 7/8" inch diameter drill hole = 0.1883 ft3 /ft. Occasionally a 5 5/8" diameter hole is drilled = 0.1726 ft3 /ft.
2 Assumes deeper holes (greater than 800 feet) will be plugged with 6 cubic yards of cement (about 760 feet) - concrete trucks can deliver 6yds of concrete to off -road sites; moderately deep holes (between 500 and 800 feet) will be plugged with 4 to 5 cu
3 Assumes $12.25 per sack and 9.5 sacks per cubic yard.
4 Assumes $9 per sack and 0.032yds3 per sack; 50 lb sacks
5 Assumes $7.25 per sack and 2.2 cubic feet per sack, approximately 11 sacks per cubic yard.
6 Cement and plug labor cost: Assumes 6 hours per hole at $395 per hour.
7 Assumes $2.25 per LYD3
8 Utilizes either D4 tracked dozer or backhoe: Assumes 3 hours per pad at $95 per hour.
9 Seed is broadcast: Assumes $140 per acre.
10 Assumes 50% failure rate: Reseeded at $70 per acre.
1 I Assumes seed application will take 2 hours at $80 per hour.
12 Hole drilled to Wolf Creek Coal Seam - (NA for 2012 Twentymile Planning)
13 Cost breakdown from CIRCES Estimating Software
14 Cost assumes a separate move for each drillhole location and each move will take approximately one -half hour
15 Linear feet per cubic foot for 5 7/8" hole is 5.312
TABLE 2 - MR12 -261
TWENTYMILE EXPLORATION 2012
RECLAMATION
COST ESTIMATE
Hole
Data
Drill Hole
Plugging
Reclaim Drill Pads
Revegetation
Est Depth
Drill Hole
3
Vds Cement/
Cement Cost
Vds3 Plug Gel
Bentonite
Chips Cost
,
Plug Gel Cost
Cost to Seal &
Drill Pad
Avg
�,
Disturbed
Pad Reclamation
,
Pad Regrade
Revel;
Revel; Fail
Reie g Cost
€.
Re%e g Fail Reseed
6
Total Reclaim
Hole ID
(ft)
l 3
Volume (yd)
Hole'
Ft Cemented
3 '
($120 /yd)
or Bentonite
(5111b bag
c
($I(I(I /110)'
Plul;�
(7S'x75' =
Disturbed
Per Pad
3
7
(Cut/Fill /Backrill)
e
and Topsoil
,
Cost
s
Reseed Cost
(Labor &
��
Cost (Labor &
ii
Cost
Chips /Hole
(drillers fee)
0.15 acres)
Depth (ft)
(yd s)
Equip.)
Equip.)
0.032 yd')a
TCW008
1 1,400
9.8
6.0
861
$720
3.8
N/A
$376
$2,370
0.15
0.5
104
$234
$285
$21.00
$10.50
$160
$160
$4,337.25
TCW009
1,400
9.8
6.0
861
$720
3.8
N/A
$376
$2,370
0.15
0.5
104
$234
$285
$21.00
$10.50
$160
$160
$4,337.25
TCWO10
1,350
9.4
6.0
861
$720
3.4
N/A
$342
$2,370
0.15
0.5
104
$234
$285
$21.00
$10.50
$160
$160
$4,302.38
TCWO11
1,300
9.1
6.0
861
$720
3.1
N/A
$307
$2,370
0.15
0.5
104
$234
$285
$21.00
$10.50
$160
$160
$4,267.50
TCW012
1,575
11.0
6.0
861
$720
5.0
N/A
$498
$2,370
0.15
0.5
104
$234
$285
$21.00
$10.50
$160
$160
$4,45929
TCP002
1,525
10.6
6.0
861
$720
4.6
N/A
$464
$2,370
0.15
0.5
104
$234
$285
$21.00
$10.50
$160
$160
$4,424.42
E ui ment Mobilization/Demobilation 13,14
Mob/Demob - Pad Construction (D9 Dozer); cost/hr /fleet ($313.25/hour)
$156.63
$2,349.45
Mob/Demob - Pad Reclamation (D9 Dozer), cost/hr
/fleet ($313.25/hour
$156.63
$2,349.45
Mob/Demob - Pad Reclamation (Seeder); cost/hr /fleet ($205.56 hour)
$102.78
$1,541.70
8,550
36.0
5163
$4,320
23.6
$2,363
$14,220
0.9
1.0
625
$1,406
$1,710
$126.0
$63.0
$960
$960
$32,368.68
1 Assumes 5 7/8" inch diameter drill hole = 0.1883 ft3 /ft. Occasionally a 5 5/8" diameter hole is drilled = 0.1726 ft3 /ft.
2 Assumes deeper holes (greater than 800 feet) will be plugged with 6 cubic yards of cement (about 760 feet) - concrete trucks can deliver 6yds of concrete to off -road sites; moderately deep holes (between 500 and 800 feet) will be plugged with 4 to 5 cu
3 Assumes $12.25 per sack and 9.5 sacks per cubic yard.
4 Assumes $9 per sack and 0.032yds3 per sack; 50 lb sacks
5 Assumes $7.25 per sack and 2.2 cubic feet per sack, approximately 11 sacks per cubic yard.
6 Cement and plug labor cost: Assumes 6 hours per hole at $395 per hour.
7 Assumes $2.25 per LYD3
8 Utilizes either D4 tracked dozer or backhoe: Assumes 3 hours per pad at $95 per hour.
9 Seed is broadcast: Assumes $140 per acre.
10 Assumes 50% failure rate: Reseeded at $70 per acre.
1 I Assumes seed application will take 2 hours at $80 per hour.
12 Hole drilled to Wolf Creek Coal Seam - (NA for 2012 Twentymile Planning)
13 Cost breakdown from CIRCES Estimating Software
14 Cost assumes a separate move for each drillhole location and each move will take approximately one -half hour
15 Linear feet per cubic foot for 5 7/8" hole is 5.312