GENERAL49345

• Permit No: C1981047
• IBM Index Class Name: General Documents
• Doc Date: 9/8/1983
• Doc Name: BLUE RIBBON COAL COMPANYS RESPONSE TO INSPECTION PROBLE NO 047-83-15
• From: MLRD
• To: BOB LIDDLE
• Permit Index Doc Type: GENERAL CORRESPONDENCE
• Media Type: D
• Archive: No

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DEPARTMENT OF NATURAL RESOURCES
David H. Getches, Executive Director
MINED LAND RECLAMATION DIVISION
DAVID C. SHELTON, Director
Richard D Lamm
Governor
September 8, 1983
TU: ,~8ob Liddle
FROM: Jim Pendleton
RE: Blue Ribbon Co Col y's Response to Inspection Problem
No. 047-83-15
On June 20, 1983, Roy Cox and I performed a partial geotechnical inspection of
the Blue Ribbon mine site. As a result of that inspection, I noted Problem
No. 047-83-15.
"047-83-15. The operator must submit a proposed remedial treatment
for the mine portal bench landslide area prior to July 31, 1983. The
remedial treatment must be accomplished prior to the end of the 1983
construction season."
Further, in that same inspection report, I observed:
"The operator should develop a remedial treatment for the affected
portion of the bench. This remedial treatment should prevent
environmental harm and hazard to public health and safety. A proposed
remedial treatment should be submitted to the Division prior to
July 31, 1983. This remedial treatment should be accomplished prior to
the end of the 1983 construction season."
The operator's response, dated July 28, 1983, and received in our office
August 2, 1983, presents the results of their remedial efforts on the mine
bench. They have completed four specific mitigative treatments:
(1) Rerouted a sewer line, whose rupture had apparently worsened bench
saturation.
(2) Located and drained an old leach field, which had also contributed to
bench saturation.
(3) Extended the underground mine drainage discharge pipe across the bench
and down its face.
(4) Relocated the screening apparatus on tVte mine bench to a cut section of
the bench, which should be more stable.
423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203 Tel. [phone]