2008-02-06_PERMIT FILE - M1977285

• Permit No: M1977285
• IBM Index Class Name: PERMIT FILE
• Doc Date: 2/6/2008
• Doc Name: Notice of Determination of DMO
• From: DRMS
• To: Denison Mines
• Media Type: D
• Archive: No

STATE OF COLORADO
~ ~ DIVISION OF RECLAMATION, MINING AND SAFETY
Department of Natural Resources
1313 Sherman St., Room 215
Denver, Colorado 80203
Phone: [phone]
FAX: [phone]
~~~~~~ ~~
February 6, 2008
FEB 0 B 2000
Mr. Harold Roberts Division of Reclamation,
Executive Vice President (U.S. Operations) Mining and Safety
~0 Denison Mines (USA) Corporation
1050 Seventeenth Street, Suite 950
Denver, CO 80265
RE: Notice of Determination of Designation Mining Operation (DMO);
DRMS File No. M-197 X85, Sunday ~ e.
Dear Mr. Roberts,
C6
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COLORADO ~~6
DIVISION O F
RECLAMATION
MINING
-~-
SAFETY
Bill Owens
Governor
Russell George
Executive Director
Ronald W. Cattany
Division Director
Natural Resource Trustee
Based on a review of operational conditions at the Sunday Mine, the Colorado Division
of Reclamation, Mining & Safety (the Division) has determined, under the criteria
specified in Rule 1.1(14) of the MINERAL RULES AND REGULATIONS OF THE
COLORADO MINED LAND RECLAMATION BOARD FOR HARD ROCK, METAL
AND DESIGNATED MINING OPERATIONS (Regulations), that the Sunday Mine
meets the definition of a Designated Mining Operation (DMO). Under the authority of
Rule 7.2.2 of the Regulations, the Division hereby notifies Denison Mines (USA)
Corporation (Denison) that the determination has been made, effective on the date
of this notice, that the Sunday Mine is a Designated Mining Operation.
The Division's determination is based on the following:
The site has the potential to release toxic materials as a result of mining operations.
Under Rule 1.1(14) of the Regulations, a site will be assigned DMO status if "toxic or
acid-forming materials will be exposed or disturbed as a result of mining operations."
The Division is of the opinion that the ore and waste rock that are generated by mining at
the Sunday Mine are toxic materials.
The obligations and requirements of a site assigned DMO status are described in Rules
6.4, 7, and 8 of the Regulations, a copy of which maybe downloaded from the Division's
website at: http://mining.state.co.us/.
If Denison agrees with this determination, you are required to notify the Division by mail
of your concurrence within 30 days of the date of this notice and proceed to comply with
the requirements of Subsections (2) and (3) of Rule 7.2.3 of the Regulations. If Denison
disagrees with the Division's determination, you may appeal this notice in writing to thy`
Office of Office of
Mined Land Reclamation Active and Inactive Mines