_GENERAL DOCUMENTS - C1981017 ‎(283)‎

• Permit No: C1981017
• IBM Index Class Name: GENERAL DOCUMENTS
• Doc Name: Bid Documents ‎(IMP)‎
• Media Type: D
• Archive: No

C0�0�9� DEPARTMENT OF NATURAL RESOURCES
D Monte Pascoe,Executive Director
Q 0,
MINED LAND RECLAMATION DIVISION
DAVID C.SHELTON Director
Richard D Lamm
Governor
M E M O R A N D U M
17 February 1983
r�
TO: Jim Herron
FROM: Jim Pendleton
RE: Draft Amended al ocessing Waste" Findings for Coal Basin Mines
Pursuant to your request I have completed a review of the amended 5-year
Coal Processing Waste Pile plans and associated analyses submitted by
Mid-Continent Resources, Inc. for the new pile at the Coal Basin mines.
The plans and analyses were prepared by Geohydro Consultants, Inc. ,
consultants to the operator. The plans are acceptable and I recommend
approval of the 5-year configuration proposed, following your resolution
of remaining final reclamation cover questions.
For your use in preparing your amended findings documents I have prepared
the following insertion for your original section XVIII . In addition I have
noticed that you included a discussion of the underground development waste
disposal from the rock tunnel within Section XVIII of your original findings.
This discussion, contained in paragraph 3 on page 53, should be relocated
to your Section XVI , "Backfilling and Grading".
In revising your original document, I recommend that you insert the following
information as paragraphs 3, 4 and' 5 on page 53:
"Mid-Continent Resources, Inc. , amended the permit application to propose the
construction of a second coal processing waste disposal structure within the
permit area. The site of the additional waste pile is located within the
upper reaches of an unnamed, intermittent tributary stream of Dutch Creek.
The proposed five-year disposal facility is located approximately 12 miles
southwest of the coal processing plant. It is the intent of the operator
to discontinue use of the existing coal processing waste pile upon approval
and construction of the second structure, which is projected to occur during
1983. Access to the proposed structure will be via an access road off the
existing access road to the No. 4 mine bench.
Mid - Continent Resources, Inc. , had a geotechnical investigation and stability
analysis prepared for the proposed structure by Geohydro Consultants, Inc.
Conceptual projections have also been prepared for an enlarged, longer life
disposal configuration for the second structure. The geotechnical investi-
gation and stability analysis were prepared in accordance with the prudent
state-of-the-art of slope stability analysis. In completing the analysis ,
423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203 Tel. [phone]