APPCOR10031

• Permit No: C1996083
• IBM Index Class Name: Application Correspondence
• Doc Date: 8/4/1996
• Doc Name: PRELIMINARY GEOTECHNICAL ENGINEERING STUDY BOWIE 2 MINE PN C-96-083
• From: DMG
• To: DAVE BERRY
• Media Type: D
• Archive: No

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DIVISION OF MINERALS AND GEOLOGY
Deparlmenl of NdWral Resources
131 l Sherman SL, Room 215
Denver, Colorado 80203
Phone [phone]
FAX U03)832,N1ilb
DATE: August 4, 1996
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STATE OF COLORADO
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DEPARTMENT OF
NATURAL
RESOURCES
TO: Dave Berry `~~~ ~~~e~oe`
. ~ JemesS LochheaA
- Evecu~ive Duecior
FROM: Jim Pendleton s` Michael B. LOng
/~ Division Dneclor
RE: "Preliminary;~ev echnical Engineering Study"
Bowie No. 2 Mine - (Permit No: C-96-083)
I have reviewed the above referenced study, which you forwarded to my
attention. This study was prepared by MAXIM Technologies, Inc., a geotechnical
subcontractor to Morrison Knudsen, the primary design contractor for Addington
Resources. This study was provided by J. E. Stover & Associates, the permit
consultant for the Bowie No. 2 Mine. As I understand the situation, Jim Stover
desires our opinion concerning the study, which he anticipates will comprise
the basis for many of the eventual responses to our geotechnical adequacy
comments. I have reviewed the study with Mr. Stover's request in mind.
General Comment
The Maxim Technologies preliminary geotechnical engineering study is
relatively thorough in its evaluation of operation -related geotechnical
concerns. It provides the results of a 23-hole boring program, including
laboratory characterization of the soils and bedrock encountered at the site. It
correctly identifies three generations of slope instability at the site. If
provides extensive preliminary recommendations for the design of the surface
facilities at the Bowie No. 2 Mine. It does not, however, provide any significant
information regarding the reclamation of the site.
The Division's primary mandate under State law is to assure that all mined
lands can be returned to beneficial use. To this end a multitude of topics are
addressed and standards provided within our regulations. To be sure, many of
our regulations also address operational topics, such as sediment control and