2015-02-10_REVISION - C1996083 ‎(2)‎

• Permit No: C1996083
• IBM Index Class Name: Revision
• Doc Date: 2/10/2015
• Doc Name: Adequacy Response #1
• From: J.E. Stover & Associates, Inc
• To: DRMS
• Type & Sequence: TR97
• Email Name: JDM
• Email Name: DIH
• Media Type: D
• Archive: No

J. E. STOVER & ASSOCIATES, INC.
2352 NORTH 7T" STREEET, UNIT B
GRAND JUNCTION, COLORADO 81501
PHONE: [phone], FAX: [phone]
MINE ENGINEERING
MINE RECLAMATION
February 2, 2015
Jason Musick
Division of Reclamation, Mining & Safety
1313 Sherman St., Room 215
Denver, CO 80203
Re: Bowie Resources, LLC, Bowie No. 2 Mine
Technical Revision #97, Adequacy Response #1
Gob Pile #1 Slope angle variance request
Permit C- 1996 -083
Dear Mr. Musick:
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The DRMS' letter dated December 30, 2014 requested additional information. On
behalf of Bowie Resources, LLC, enclosed is the revised data.
DRMS: The Division has completed a preliminary adequacy review of the technical
revision application (TR -97) submitted by J.E. Stover & Associates, Inc. for the Bowie
No. 2 Mine. The revision requests a variance from the construction requirements of
Rule 4.10.1(4) for a portion of Gob Pile #1.
With the application, BRL submitted revised pages for two portions of the approved
permit application package. A new stability evaluation, dated November 21, 2014, has
been prepared by Huddleston -Berry Engineering & Testing, LLC (HBET). HBET
evaluated the present configuration of Gob Pile #1, using reasonable material
parameters for native soils and compacted coal mine waste (gob). Geotechnical
investigations for the disposal site were conducted by other firms prior to construction
of the pile. HBET successfully addresses the pertinent requirements of 2.05.3(6)(b), (c)
and (d) referenced by 4.09.1(3) for alternative design specifications. We have no
comments regarding the HBET Stability Evaluation for Gob Pile #1.
As a result of reviewing the engineering and geotechnical aspects of TR -97, we have
the following comments related to organization of the permit and formatting.
Volume IV Coal Mine Waste Bank
1. DRMS: According to the Table of Contents (TOC), Volume IV currently includes
two separate reports: WesTec 1996 and Lambert 1999. Revised pages 5 & 5i were