2011-01-27_HYDROLOGY - C1981010

• Permit No: C1981010
• IBM Index Class Name: HYDROLOGY
• Doc Date: 1/27/2011
• Doc Name: 4th Quarter 2010 DMRS ‎(CO-0032115)‎
• From: DRMS
• To: Trapper Mining, Inc
• Permit Index Doc Type: DMR’s
• Email Name: RDZ
• 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]
January 27, 2011
Graham Roberts
Trapper Mining, Inc
P.O. BOX 187
Craig, CO 81626
RE: Trapper Mining, Inc., Permit C-81-010
Review of Fourth Quarter 2010 Discharge Monitoring Reports
for CDPHE Permit No. CO-0032115
Dear Mr. Roberts:
COLORADO
D IV IS I ON OF
RECLAMATION
MINING
SAFETY
John W. Hickenlooper
Governor
Mike King
Executive Director
Loretta E. Pineda
Director
The Colorado Division of Reclamation, Mining, and Safety (Division) has reviewed and found the
above referenced report to be in compliance with Rule 4.05.13(2). The Discharge Monitoring Reports
were received by the Division on January 25, 2011. The reports cover the time period from October 1,
2010 through December 31, 2010.
Four NPDES outfalls discharged during the fourth quarter of 2010. Outfall 001 (in Johnson Gulch
drainage) and Outfall 002 (in No Name Gulch drainage) discharged routinely throughout the quarter.
Two other outfalls discharged during the quarter. Outfall 011 and outfall 020 discharged in response
to precipitation events in October and November.
No exceedances of effluent limitations occurred during the quarter.
Outfall 011 and outfall 020 were sampled for WET Testing during the quarter, and all tests passed with
LC50 exceeding 100 percent for both test species.
If you have any questions feel free to contact me at [phone], ext 8113.
Sincerely,
Robert Zuber, P.E.
Environmental Protection Specialist
Office of Office of
Mined Land Reclamation Denver • Grand )unction • Durango Active and Inactive Mines