REV103049

• Permit No: C1996083
• IBM Index Class Name: Revision
• Doc Date: 3/18/2005
• Doc Name: Adequacy Response
• From: J.E. Stover & Associates Inc
• To: DMG
• Type & Sequence: TR36
• Media Type: D
• Archive: No

J. E. STOVER & ASSOCIATES, INC.
2768 COMPASS DRIVE, SUITE 101
GRAND JUNCTION, COLORADO 81508
PHONE: [phone], FAX [phone]
MINE ENGINEERING
MINE RELLAMATION
March 17, 2005
J. J. Dudash
Division of Minerals & Geology
1313 Sherman St., Room 215
Denver, CO 80203
Re: Bowie No. 2 Mine
Technical Revision No. 36, NOV CV-2005-002
Gob Pile Stability Adequacy Response
Permit C-96-083
Dear Mr. Dudash:
CIVIL ENGINEERING
CONST. MANAGEMENT
RECE~~N~~
h1AR ; ~ 2005
Oivisian Gf Minerzls ano Geelom•
On February 1, 2005, the DMG issued a notice of violation to Bowie Resources, LLC,
for failure to provide a geotechnical analysis that demonstrates the factor of safety of
the in place and proposed coal mine waste bank no. 2 is 1.5 or greater using site
specific characteristics (moist unit weight) and strength parameters of cohesion and
angle of internal friction from coal processing waste material that have been placed on
the coal mine waste bank no. 2.
The steps necessary to abate the violation are to provide a geotechnical analysis that
demonstrates the factor of safety of the in-place and proposed coal mine waste bank
no. 2 is 1.5 or greater. The required geotechnical analysis is enclosed to abate the
violation.
The results of the stability study are explained on page 13 of Volume IX. In summary,
the slope inclinations will have to be flattened to assure the pile attains a factor of safety
of 1.5. '
Amended pages 3, 13 and the Geotechnical Engineering Study are enclosed for the
referenced technical revision adequacy response. The revised materials are to be
inserted into Volume IX Gob Pile #2. Please call if you have any questions.
Sincerely,
~~
J. E. Stover, P.E.
Consulting Engineer
cc: Wm. A. Bear. Jr.