REP45469

• Permit No: C1982056
• IBM Index Class Name: Report
• Doc Date: 2/7/2001
• Doc Name: 2000 AHR Review Letter
• From: Kent Gorham
• To: Janet Binns
• Annual Report Year: 2000
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY
Department of Natural Resources
1313 Sherman St., Room 215
Denver, Colorado 80203
Phone: [phone]
94~tL4~~~fi~~~6Memo
To: Janet Binns /!,~~~
From: Kent Gorham l "
Date: 02/07/01
Re: 2000 Annual Hydrology Report, Foidel Creek Mine, #C-82-056
DIVISION OF
MINERALS
GEOLOGY
RECLAMATION
MINING•SAFETY
Bill Owens
Governor
Greg E. Walther
ExeNtive Director
Michael B. Long
Division Director
I have completed my cursory review of the 2000 Foidel Creek Annual Hydrology Report.
During the review, it became apparent that there may be a misunderstanding between TCC
and the Division concerning the surface water monitoring requirements. Before doing a
thorough review of the report, I wanted to make sure that the Division has all the available
data.
In the AHR text under the heading Surface Water Monitoring the operator states;
"Prior to the approval of TR-35 (May 2000), the permit required 12 flow and field parameter
monitoring instances to occur between March and September along with 4 water quality
sampling events. Prior to this approval, monitoring/samplinghegan in March with extra
monitoring and sampling planned to provide the required instances. TR-35 requires only
monthly flow and field parameter monitoring with only quarterly water quality sample
collection. After the approval of TR-35, the monitoring schedule was changed to comply, and
the extra monitoring/sampling was cancelled. As a result, the 2000 Water Year includes
fewer surface water monitoring/sampling instances than normal, however, all required
monitoring/sampling instances were completed during 2000."
According to our copies of the permit and the TR-35 file, the approved plan under TR-35
continues to require 12 flow and field sample events and four full suite quality samples for 14
surface water sites under a'Ylexible schedule throughout the normal flow period March to
September. Within this time frame, flow and field parameters will be measured 12 times and
four full suite analysis will be conducted:' (Reference Exhibit 14, page 148, TR-35 4/11/00
footnote (1)).
The AHR includes 8 flow and field sampling events and 2 full suite samples for the majority of
the surface water sites.
Obviously, this misunderstanding should be resolved before undertaking any detailed review.
TCC should have the opportunity to provide any additional data before moving forward with
the review.
This concludes my initial review. If you have questions, please let me know.
CC: Dan Hernandez
• Page 1