PERMFILE42863

• Permit No: M2000144
• IBM Index Class Name: Permit File
• Doc Date: 1/18/2001
• Doc Name: NORTH LA POUDRE RESOURCE 112 ADEQUACY REVIEW FN M-2000-144
• From: DMG
• To: HALL IRWIN CORP
• Media Type: D
• Archive: No

• • iii iiiiiiiiniii iii
STATE OF COLORADO
DIVISION OF h11NERALS AND GEOLOGY
Uepartmem of uawral Resources
I }1 7 Sherman St.. Room ? 1 S
Denver. CulOrado HO?U3 D I V I S I O N O F
Rno~e: ~ao~l a66-3s6~ MINERAL S
FAX: [phone]_-8106 &
GEOLOGY
January 18,2001 MENINGMSAFEOTY
811 O..~em
eovernnr
Jeff Gregg
Creg E. Walchor
Hall-lrwin Corporation Ececueve Uneaar
3026 4th Avenue Michael B LoeF
Owyw~ Director
Greeley, CO 80631
RE: North La Poudre Resource, 112 Adequacy Review, File No. M-2000-144
Dear Mr. Gregg:
Listed below aze adequacy review comments on the above-captioned Regular 112 Application.
The decision date for your application is scheduled for February 19, 2001. Therefore, I would
appreciate a response from you on or before February 9, 2001. Please be advised that your
application may be deemed inadequate and may be denied on February l9, 2001 unless the
following adequacy review items aze addressed to the satisfaction of the Division.
6.4.4 EXHIBIT D -Mining Plan
1. The applicant specifies on page 14 that mining will occur in 2 phases, over a 5 year period, and
that mining and reclamation will proceed concurrently. The following criteria will be used in the
Division's determination of an adequate reclamation cost unless the applicant can clarify the
conditions to be expected during maximum disturbance scenario at the site:
there will be a total disturbance of 33 acres of which 25 acres will be excavated
there will be 6950 lineaz feet of pit wall, approximately 18.5 feet in height
the excavated pits will fill with approximately 312.5 acre-feet of water in the absence of active
pumping
8 disturbed acres of stockpile & access areas will need to be ripped, scarified, fertilized, seeded,
mulched, & crimped
6 disturbed acres will need to be backfilled w/ overburden, scarified, fertilized, seeded,
mulched, & crimped
19 acres of lake surface (comprised of 2 lakes) w/ 6570 linear feet of shoreline will be created
40,000 cu.yd. of topsoil will be generated of which 10,500 cu.yd. will be needed for reclamation
240,000 cu.yd of overburden will be generated of which 156,300 cu.yd. will be needed to
backfill 6950 linear feet of pit wall to a 3: I slope; [here will be a surplus of 83,700 cu.yd. of
overburden