HYDRO25831

• Permit No: C1982056
• IBM Index Class Name: Hydrology
• Doc Date: 10/28/2005
• Doc Name: 3rd Quarter 2005 Review Memo
• From: Byron Walker
• To: File
• Permit Index Doc Type: Sediment Pond Inspect
• 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]
FAX: [phone]
Interoffice MEMORANDUM
to: File
from: Byron G. Walker
subject: Review of Impoundment Inspection Reports
Permit C-1982-056, 3rd Quarter 2005
date: October 28, 2005
COLORADO
DIVISION OF
MIN SRALS
GEOLOGY
0.EC LANATION•NINING
SAFETY•r CIENCE
Bill Owens
Governor
Russell George
Executive Director
Ronald W. Cattany
Division Director
Natural Resource Trustee
This review is conducted to determine compliance with Rule 4.05.9(17). The subject quarterly
inspections reports, dated 9/20/05, have been on file at the mine. They amved at the Division of
Minerals and Geology on October 5, 2005, under a letter dated October 4, 2005.
Inspection reports were submitted for Ponds B, C, D, E, F, G, T, FCT, FCBH, the Area #1 pit
pond, the thickner underflow holding pond, and the evaporative impoundment at the Fish Creek
Tipple (FCT Waste Water Pond) These features were recently recognized as impoundments.
However, also recognized as impoundments, are the sewage treatment ponds of the main facility
and the 18-Right cuttings impoundment. See comments to the operator in the response to the
submission.
Were the ponds inspected for structural weakness? Yes [included differential settling, cracks or
slides, seepage, erosion (included rills and gullies on embankments, inadequate vegetation, outlet
channel erosion, burrows and other)].
Were the ponds inspected for other hazardous conditions? Yes (included defective spillways,
dewatering device clogged, faulty gate, baffles, pumps, and other).
Did a qualified person designated by the operator prepare the reports? Yes, Brian Watterson, a
qualified person, accomplished the inspections.
The reports also included information on sediment levels and any required maintenance. A need
for maintenance appears to be developing at the FCT pond E and the FCBH.
Office of Office of Colorado
Mined Land Reclamation Active and Inactive Mines Geological Survey