REV96096

• Permit No: C1982055
• IBM Index Class Name: Revision
• Doc Date: 12/9/1983
• Doc Name: TR FILE C-055-82
• From: MLRD
• To: SUNDANCE COAL CO
• Type & Sequence: MT1
• Media Type: D
• Archive: No

i i i i i i i iii i i i i i i iii
DEPARTMENT OF NATURAL RESOURCES
David H. Getches, Executive Director
MINED LAND RECLAMATION DIVISION
DAVID C. SHELTON, Director
Richard D. Lamm
Governor
December 9, 1983
P1r. Art Van Sant
Sundance Coal Co.
P.O. Box 751
Trinidad, Colorado 81082
Re: Technical Revision, File No. C-055-82
Dear Mr. Van Sant:
The Division has reviewed your technical revision application for
expansion of the refuse pile submitted July 21, 1933.
The Division is proposing to approve the application at this tune with
three stipulations.
The stipulations are as follows:
Stipulation No. l:
THE PERMITTEE SHALL COMPLETE A SITE-SPECIFIC SOPHISTICATED
MATHEMATICAL STABILITY ANALYSIS OF THE AMENDED CONFIGURATION
PROPOSED FOR THE COAL PROCESSING WASTE PILE. THE PERMITTEE SHALL
SUBr4IT THAT ANALYSIS, FOR REVIEW BY THE DIVISION, NO LATER THAN 90
DAYS FOLLOWING APPROVAL OF THIS TECHfVICAL REVISIOfV APPLICATION.
THE PERMITTEE SHALL RESTRICT PLACEMENT OF COAL PROCESSING WASTE TO
THE TWO LOWER-MUST 50 FOOT THICK TERRACE BENCHES OF THE PROPOSED
AMENDED WASTE PILE, UNTIL THE DIVISIOfJ HAS APPROUED THE STABILITY
ANALYSIS AND CORRESPOiVDING DESIGN. IN THE EVENT THAT THE STABILITY
ANALYSIS DETERMINES THAT THE SLOPES OF THE PROPOSED AMEfVDED COAL
PROCESSING WASTE PILE WILL NOT ATTAIN THE REQUIRED MINIMUM STATIC
SLOPE SAFETY FACTOR OF 1.5, SUfJDANCE COAL COMPANY SHALL REDESIGN
AND RECOfVSTRUCT THE THEfV EXISTING EMBANKMENT TO COfVFORM 4lITH A
DESIGN SUBSEQUENTLY APPROVED BY THE DIVISION. IN SUCH AN EVENT, IF
AiV ACCEPTABLE REOESIGN HAS NOT BEEN APPROVED BY THE DIVISION WITHIN
90 DAYS FOLLOWING THE SUBMISSION OF THE ORIGINALLY REQUIRED
STABILITY ANALYSIS, SUNDANCE COAL COMPANY WOULD BE ORDERED TO CEASE
DEPOSITION OF COAL PROCESSING WASTE.
423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203 Tel. [phone]