2013-09-06_REVISION - C1981010

• Permit No: C1981010
• IBM Index Class Name: Revision
• Doc Date: 9/6/2013
• Doc Name: Adequacy Review No. 1
• From: DRMS
• To: Trapper Mining, Inc
• Type & Sequence: SL14
• Email Name: JLE
• Email Name: SB1
• Media Type: D
• Archive: No

STATE OF COLORADO
DIVISION OF RECLAMATION, MINING AND SAFETY
Department of Natural Resources
1313 Sherman St., Room 215
C O L O RA D O
D I V I S I O N o f
Denver, Colorado 80203
RECLAMATION
Phone: [phone]
M IN I NIN G
N
FAX: [phone]
SAFETY
September 6, 2013
John W. Hickenlooper
Governor
Forrest Luke
Trapper Mining, Inc.
Mike King
P.O. Box 187
Executive Director
Craig, Colorado 81626
Loretta Pineda
Director
RE: Trapper Mine; C- 1981 -010; SL14 Phase I Bond Release Application
Adequacy Review No. 1
Dear Mr. Luke,
The Colorado Division of Reclamation, Mining and Safety (Division) received the SL -14 bond release application
on May 13, 2013. The application was deemed complete for review on July 18, 2013 and the bond release
inspection was conducted on August 15, 2013. As documented in the inspection report, the backfilling and
grading has been conducted to achieve approximate original topography. The Division does have concerns about
several of the drainages within the requested bond release parcels as discussed below.
Drainage Control
1.) Each of the bond release parcels are part of a larger watersheds and each drain into an approve sediment
control system. Drainages have been reconstructed within several of the parcels requested for bond
release. The Middle Pyeatt reconstructed drainage is located within bond release parcel A -B -10. A portion
of Oak Gulch drainage is located in parcel A -B -09. The side slopes of these drainages are very steep and
have eroded significantly. Check dams have been installed within these drainages and they appear to
have helped slow the erosion of these drainages to some degree but the drainages do not appear to be
stable. An arm of the East Pyeatt drainage is in the process of being constructed between bond release
parcels F -A -12 and Z -A -12. While this channel is not depicted on the 2012 Annual Reclamation Report
map, the channel has been excavated and rock has been staged in the channel for check dam construction.
The Division and Trapper are currently evaluating the drainage reconstruction and stabilization plan
approved in the permit as part of Permit Revision No. 7. In accordance with Rule 4.05.3(1)(3)(4) & (7),
channels must be designed, located, constructed, maintained and used to minimize adverse impacts to the
hydrologic balance, and to be stable. Given the channel erosion observed during the bond release
inspection of the Middle Pyeatt and Oak Gulch reconstructed channels and the future stabilization of the
portion of the East Pyeatt channel, these portions of the drainages within the current bond release are not
eligible for phase I bond release at this time. A corridor surrounding these drainages will need to be
removed from the bond release area for future maintenance and stabilization efforts. Please submit a
revised Map 1 for the SL 14 bond release application that excludes the corridors around these drainages
from the bond release area.
2.) Once these corridor areas have been delineated please indicate the area in acres to be excluded from the
bond release area.
Office of Office of
Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines