2011-03-22_PERMIT FILE - M2011005

• Permit No: M2011005
• IBM Index Class Name: PERMIT FILE
• Doc Date: 3/22/2011
• Doc Name: Preliminary adequacy review
• From: DRMS
• To: Buckhorn Geotech, Inc.
• Email Name: GRM
• Media Type: D
• Archive: No

STATE OF COLORAD*/I,
O
DIVISION OF RECLAMATION, MINING AND SAFETY
Department of Natural Resources
1313 Sherman St., Room 215
Denver, Colorado 80203
Phone: [phone]
FAX: [phone]
March 22, 2011 RECENSD
Daniel Quigley MAR 28 roil
Buckhorn Geotech, Inc. Division of Re3lamation,
ltiiining an: Safety
222 South Park Ave.
Montrose, Colorado 81401
Re: Donley Rock Quarry, Application # M-2011-005, Preliminary Adequacy Review.
Dear Mr. Quigley,
COLORADO
DIVISION OF
RECLAMATION
MINING
SAFETY
John W. Hickenlooper
Governor
Mike King
Executive Director
Loretta E. Pineda
Director
The Division of Reclamation, Mining, and Safety (Division) has completed Preliminary Adequacy Review
for the above referenced application. The public comment period has closed and none were received.
A few issues need to be clarified or corrected. Please address the following:
In the mining plan 6.4.4:
1) (b) Notes that topsoil will be stockpiled in a designated area and sedimentation control put in
place. Please address how the applicant will address Rule 3.1.9(1) to protect the topsoil
stockpile from wind and precipitation erosion.
2) (c) and Map C-2 note sedimentation structures. Due to the length of proposed mining activities
staff questions whether more durable materials should be used other than logs and hay bales
for sedimentation structures. Since the mine is for rip-rap materials it is suggested that the
applicant use some available material in construction to prevent future degradation or
maintenance issues. Please clarify why the materials noted should be used.
3) (i) notes no structures within several hundred yards. A Division pre-operational inspection
confirms this. However several homes and structures were noted to the south / southeast.
Please clarify the anticipated frequency of blasting and clearly note the distance and topography
to the closest structure to the south.
In the Reclamation Plan 6.4.5:
1) Per (2)(e) the plan notes that the applicant will need to import approximately 28,000 cubic yards
of native backfill to achieve 3:1 required slopes. Staff normally requires the identification of a
source for such materials and bonds for its delivery. While a local authority is not required to
post a bond, the question of a source for such materials is still valid. It I understood that it may
be some time before actual subsurface excavation begins in earnest and the need for such
backfill material is required. Please have the applicant identify a benchmark in mining were they
will be required to notify the Division of a source of materials to meet this reclamation
requirement.
2) Associated with the importation please address the requirements of Rule 3.1.5(9) for the
importation of inert fill.
Office of
Office of
Mined Land Reclamation Denver • Grand Junction ,• Durango Active and Inactive Mines