2009-07-30_HYDROLOGY - C1981010

• Permit No: C1981010
• IBM Index Class Name: HYDROLOGY
• Doc Date: 7/30/2009
• Doc Name: 2nd Quarter 2009 DMRS Review
• From: DRMS
• To: Trapper Mining, Inc
• Permit Index Doc Type: DMR’s
• Email Name: JDM
• 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 COLORADO

Phone: [phone] D I V I S I ON OF
RECLAMATION
FAX: [phone] MINING

July 30, 2009 SAE Y
Graham Roberts Bill Ritter, Jr.
Trapper Mining, Inc Governor

P
Box 187
O Harris D. Sherman
.
. Executive Director
Craig
CO 81626
, Ronald W. Cattany
Division Director
RE: Trapper Mining, Inc., Permit C-81-010 Natural Resource Trustee
Second Quarter 2009 Discharge Monitoring Reports Review
Dear Mr. Roberts,
The Colorado Division of Reclamation, Mining, and Safety (CDRMS) has reviewed and found the
above referenced report to be in compliance with Rule 4.05.13(2). The Second Quarter Discharge
Monitoring Reports were received by the Division on 29 July 2009. The reports cover the time period
from 01 April 2009 through 31 June 2009.
Five NPDES outfalls discharged during the Second Quarter of 2009. Outfalls 001, 002, 011 and 020
discharged routinely throughout the quarter. Outfall 021 discharged during the beginning of April due
to precipitation events response to snowmelt. Outfalls 011, 020 and 021 were sampled for WET
analyses during the quarter. No exceedances of WET test limitations were observed.
It is noted that primary effluent limitations were exceeded at three outfalls during the quarter. The
exceedences for outfalls 020 and 021 were in direct response to snowment and or precipitation events
resulting from snowfall. The alternate limitations for Settleable Solids were met at all outfalls.
A single exceedence of primary effluent limitations for pH occurred at outfall 001 during the quarter.
A reading of 9.2 was recorded on June 9th. It is noted that the maximum limitation for pH at this
outfall is 9.0. C02 treatment was initiated at the site and the condition was corrected.
It is noted that based on a Memorandum of Understanding between the Division of Reclamation,
Mining and Safety and the Water Quality Control Division (WQCD), the WQCD will be responsible
for enforcing CDPS permit conditions including effluent limitations. WQCD was made aware of the
effluent exceedance and any future enforcement actions will be forwarded to the Division.
If you have any questions feel free to contact me. [phone] ext 8134
4 a Sincerel ,
son Mus'c
Envirornnental Protection Specialist
Office of Office of
Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines