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GENERAL48959
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Entry Properties
Last modified
8/24/2016 8:26:45 PM
Creation date
11/23/2007 4:45:06 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980007
IBM Index Class Name
General Documents
Doc Date
8/22/1997
Doc Name
WEST ELK MINE FACILITIES WITHIN SYLVESTER GULCH Letter
From
DMG
To
MOUNTAIN COAL CO
Permit Index Doc Type
EXPLORATION
Media Type
D
Archive
No
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III ~II~I~~II~~II III <br />STATE OF COLv~v--~~~ <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />1 311 S'nerman $1., Room 215 <br />Denver, Colorado 8020] <br />Phone:1J031 866-3567 <br />FAX: (}Olt 8J2-8106 <br />August 22, 1997 <br />Mr. Phil Schmidt <br />Mountain Coal Company <br />PO Box 591 <br />Somerset, CO 81434 <br />ItE: West Elk Mine Facilities within Sylvester Gulch, File C-80-007 <br />Dear Mr. Schmidt: <br />~~~ <br />DEP.IRTMENT OF <br />NATURAL <br />RESOURCES <br />Roy Ramer <br />Governor <br />lames 5. Lochhead <br />Exttmne Dvtttor <br />Michael B. Long <br />Division Dvtttor <br />Thank you for meeting with me on August 20,1997 to discuss your letter dated August 1, 1997, <br />which responds to my July 25, 1997 order for a revision to the Mountain Coal Company (MCC) <br />permit. Your letter refers to six attachments. Both the faxed and mailed versions of the letter <br />contained only five attachments. If there is an additional attachment which you would like me to <br />consider please let me know as soon as possible. As part of my review of your response, <br />including the various attachments, I have also cazefully reviewed Exhibit 69 of the MCC permit <br />and the weekly field monitoring reports which MCC has submitted for the time period of May 27 <br />-August 11, 1997. <br />As we discussed earlier this week, in general I agree with your assertion that MCC has a <br />methodology in place to respond to actual conditions encountered during construction of the <br />Sylvester Gulch facilities. I do not find, however, that MCC has implemented the plan completely <br />or appropriately in all instances. <br />To summarize, your Construction Approach and Monitoring Program methodology includes four <br />basic parts, as follows: <br />• collect additional geotechnical data and prepare additional slope stability analyses prior to <br />construction, <br />• conduct detailed 5eld monitoring of construction activities and results, <br />• use top-down and benching constntction techniques and control surface and ground <br />waters to minimize or mitigate potential for slope failures, <br />• perform redesign and slope failure mitigation activities as required to ensure long-term <br />stability. <br />The presumed advantage to having the Construction Approach and Monitoring Program in place <br />is to allow MCC to respond in a proactive manner to the rigors of the construction project within <br />Sylvester Gulch, learning from any failure situations and adapting methods and assumptions in <br />order to avoid future failures. The Division approved the program with the intent to prevent <br />environmental damage and ensure successful reclamation. However, it is not appazent that a <br />
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