REP29949

• Permit No: C1981019
• IBM Index Class Name: Report
• Doc Date: 7/14/2005
• Doc Name: 2nd Quarter 2005 Review Memo
• From: Byron Walker
• To: File
• Permit Index Doc Type: Waste Pile/Fill Report
• Media Type: D
• Archive: No

STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY
Department of Natural Resources
1313 Sherman SL, Room 215 C O L A RA D O
Denver, Colorado 80203 DIVISION O F
Phone: [phone] MINERAL S
FAX: [phone] G E O L O G Y
0.ECLAMATION•MINING
SAFETY•SQENCE
interoffice Bill Owens
Governor
MEMORANDUM Russell George
Executive Director
to: File C-81-019 Colowyo Coal Mine, West Pit Fill Inspection Report, 2"d i~P2'r~"~ny
2005 Division Director
Natural Resource Trustee
from: Byron G. Walker
subject: Review for Compliance
date: July 14, 2005
Rule 4.09.1(1 l) Inspection
Rule 4.09.1(11)(a) The fill shall be inspected for stability by a registered engineer or other
qualified professional specialist experienced in construction of earth and rockfill embankments
under the direction of a qualified professional engineer at least quarterly' throughout the
construction and during the following critical construction periods2: (1)removal of all organic
material and topsoil, (2)placement of underdrainage systems, (3) installation of surface drainage
systems, (4) placement and compaction of fill materials, and (5) revegetation.
The permittee is in compliance with this rule. 1 This is a quarterly report. A registered engineer
accomplished both the inspection and certification. 2 No critical construction period was
encountered during this period. A requirement to complete a surface drain was noted.
Rule 4.09.1(11)(b) The qualified registered engineer shall provide to the Division a certified
report within 2 weeks after each inspection I that the fall has been constructed as specified in the
design approved by the Division. 2The report shall include a description of any appearances of
instability, structural weakness, and other hazardous conditions observed during the inspection.
A copy of the report shall be retained at the mine site.
The certification indicates that the ftll was inspected on May 25, 2005. The report was to be
provided to the Division by June 8, 2005 (within two weeks after the inspection, PAP, Exhibit
19, Section I, page Ia-4). The report was submitted on a letter of June 3, 2005 and received at the
Division on June 3, 2005. 2 The report included observations on instability, structural weakness
and other hazardous conditions. There were no problems with the fill.
files: C-1981-019 West Pit Fill Reports
C:\bgw\My Documents\Colowyo\inspectionsMill insp\wp fill insp rpt 2q5 rvw.doc
Office of Office of Colorado
Mined Land Reclamation Active and InaRive Mines Geological Survey