2020-12-07_REVISION - M2009027

• Permit No: M2009027
• IBM Index Class Name: REVISION
• Doc Date: 12/7/2020
• Doc Name: Request For Amendment To Permit
• From: The Walsenburg Sand and Gravel Company
• To: DRMS
• Type & Sequence: AM1
• Email Name: JPL
• Email Name: JLE
• Email Name: AWA
• Media Type: D
• Archive: No

EXHIBIT L
RECLAMATION COSTS
The following Reclamation Cost Estimate is based on the
assumption that there will be no more than 25 . 00 acres ± distur-
bance at any-one time. The mine working face will be 900 feet long
by 20 feet high and be cut/fill sloped. An addition 400 feet of
slope will need to be backfill sloped. When it comes time to
resoil the area, an average of 5 inches of soil would be spread
over the disturbed area. At that time we will have to respread
16, 805 cubic yards of topsoil and move 3, 333 cy of cut\fill slop-
ing. The backfill sloping and shaping on the exterior slopes
needing 7, 115 cubic yards of material. The table below outlines
the various areas of disturbance at the time explained above. A
D8N is used to do the shaping and resoiling in this calculation and
the mobilization haul distance is 9.25 miles . The revegetation
cost figure used includes fertilizer, grass seed, labor and drill-
ing costs .
STAGE TOTAL SOIL DEPTH
NEEDING RESOILING 25.00 5
REVEGETATION AREA 25.00
RESOIL @ 51' 1 6,805 CUBIC YARDS
CUT/FILL SLOPING 3,333 CUBIC YARDS
BACKFILL SLOPING 7, 1 1 5 CUBIC YARDS
ESTIMATED UNIT COSTS FOR RECLAMATION ITEMS:
Unit Cost
1. Revegetation areas includes grass seed, fertilizer
and labor to drill . . . . . . . . . . . . . . . . . $ 356.19/AC.
2. Re-spreading soil and/or growth media with
D-8 cat push distance 200 ft or less . . . . . . . . . . . . $ 0.471/YD3 1i
3. Cut/fill working face 400 feet long by 20 feet high
D-8 cat push distance 60 ft or less . . . . . . $ 0.255/YD3 11
4. Backfill and shape 400 feet long by 20 feet high
988H Frontend Loader haul distance 900 ft or less . . . . . . $ 0.946/YD3 1'
5. Dust control 1 - Water tanker 2500 gal . . . . . . . . . $ 52.61/hr
6. Shape seedbed Cat 140M motor grader at 1.3 acres per hour . . . $ 81. 94/AC 1'
7. Rip compacted area Cat 140M motor grader at 1.17 acres per hour $ 90.79/AC 1'
RECLAMATION COSTS
1. Revegetation, 25.22 ac @ $356.19/ac $8, 904.75
la. Secondary revegetation 25.00 ac * 50% @ $356.19/ac 4,452.38
2. Resoiling, 16, 805 yd3 @ 47.14/yd3 7, 917.17
3. Cut/fill highwall 3, 333 yd3 *1.25 @ 25.5C/yd3 1, 062.49
4 . Backfill slope 7, 115 yd3 @ 94.60/yd3 6,730.17
5. Dust control 40 hrs @ $52.61/hr. 2,104.40
6. Shape seed bed 25.0 acres @ $81. 94/ ac 2, 048.54
7. Rip compacted area 20.0 ac @ $90.79/ac 1,815.17
Net Total $35,035.68
6. Indirect costs
Mobilization 3, 487.22
Insurance, Bond, Management& Profit 8,709.12
7. Administration costs 2, 861. 60
TOTAL ESTIMATE $50, 093.62
Recommend bond remain set at$50,500.00
W56- Hribar Pit Amendment December 2020
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