GENERAL40140

• Permit No: C1980007
• IBM Index Class Name: General Documents
• Doc Date: 9/24/1985
• Doc Name: Stip. 20 modification letter
• From: MLRD
• To: ANACONDA MINERALS CO
• Permit Index Doc Type: STIPULATIONS
• Media Type: D
• Archive: No

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Ficnartl D. Lamm
Governor
DEPARTMENT OF NATURAL RESOURCES
Dev~a M. Getchee. Executive Dvsctor
MINED LAND RECLAMATION DIVISION
DAVID C. SH ELTON, Dlr~etor
September 24, 1985
Ms. Paige Beville
Anaconda Minerals Co.
555 - 17th Street
Denver, CO 80202
RE: Mt. Gunnison No. 1 Mine Stipulations, C-001-80
Dear Ms. Beville:
III IIIIIIIIIIIIIIII
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The Division has reviewed your request dated August 21, 1985, that stipulation
20 be modified. As a result, the Division is proposing to modify the
appropriate stipulations, known as 21 and 22 in the 1,630 permit revision
findings. The modified stipulations shall read:
STIPULATION N0. 21 Cst(' t~~
THE DIVISION DIRECTS WECC TO COMPLETE A DETAILED ANALYSIS OF THE POTENTIAL
EFFECTS UPON THE SLOPE STABILITY OF THE LANDSLIDE DEPOSITS ADJOINING BEAVER
RESERVOIR. WECC SHALL INSTALL AND MONITOR AN APPROPRIATE SET OF MONUMENTS ON
THE LANDSLIDE DEPOSITS, IN ORDER TO OBSERVE THE POTENTIAL DISPLACEMENT OF THE
LANDFORM. THE DETAILED ANALYSIS SHALL BE COMPLETED AND SUBMITTED TO THE
DIVISION FOR REVIEW, PRIOR TO REQUEST FOR APPROVAL TO EXTRACT COAL BENEATH THE
LANDSLIDE DEPOSITS ADJOINING BEAVER RESERVOIR.
STIPULATION N0. 22 C~ tit)
THE DIVISION DIRECTS WECC, AS A PORTION OF ITS SUBSEQUENT PERMIT APPLICATIONS
FOR THE MINE, TO SUBMIT REVISED SUBSIDENCE EVALUATIONS. THE SUBSIDENCE
EVALUATION FOR EACH PERMIT PERIOD REQUESTED SHALL INCORPORATE THE RESULTS OF
SUBSIDENCE MONITORING AND THE LANDSLIDE STABILITY STUDIES COMPLETED TO DATE,
AS STIPULATED ABOVE. PARTICULAR ATTENTION SHALL BE FOCUSED UPON DESIGNATED
SAFE AREA BUFFERS, TO BE OBSERVED IN FUTURE MINING BENEATH CRITICAL AREAS,
INCLUDING THE DRY FORK OF MINNESOTA CREEK, AND BEAVER RESERVOIR AND THE
LANDSLIDE DEPOSITS ADJOINING IT. THE AMENDED SUBSIDENCE EVALUATIONS SHALL
INCLUDE THE PROPOSAL OF APPROPRIATE SUBSIDENCE MONITORING NETWORKS WITHIN EACH
OF THESE DESIGNATED CRITICAL AREAS.
These modifications sha71 be reflected in the approval document for the
320-acre deletion revision and temporary waste pile revision, respectively,
and shall become effective upon final approval of said revisions.
Based on your response to stipulation 14 dated August 15, 1985, also known as
stipulation 12 in the 1,630 permit revision findings, the Division suggests
that paragraph 4 of the response be modified as follows. Changes are
underlined.
a23 Centennial Building, 1313 Sherman Street Denver, Colorado 80203 Tel. [phone]