PERMFILE56664

• Permit No: C1981038
• IBM Index Class Name: Permit File
• Doc Date: 9/16/2003
• Section_Exhibit Name: Volume 6 Phase II Stability Analysis - Geotechnical Engineering Study
• Media Type: D
• Archive: No

M03030GE
i •
1.0 INTRODUCTION
This report presents the results of the geotechnical engineering
study we conducted for the West Mine Reclamation at the Bowie
Number 1 Mine located near Paonia, Colorado. The study was con-
ducted at the request of Mr. Jim Stover, J.E. Stover and Associ-
ates.
The conclusions, suggestions and recommendations presented in
this report are based on the data gathered during our site and
laboratory study and on our experience with similar soil condi-
tions. Factual data gathered during the field and laboratory work
are summarized in Appendices A and B.
1.1 Proposed Construction
It is our understanding that the reclamation project consisted of
placing fill in the existing portal bench to restore near original
contours. The fill was placed at a final slope inclination of
about three (3) to one (1) (horizontal to vertical). The reclama-
tion fill slope is about one-hundred twenty-five (125) vertical
feet high.
1.2 Scope of Services
Our services included geotechnical engineering field and labora-
tory studies, analysis of the acquired data and report preparation
for the proposed site. The scope of our services is outlined
below.
- The field study consisted of describing and sampling the soil .
materials encountered in two (2) small diameter continuous
flight auger advanced test borings at the mine portal reclama-
tion site.
- The materials encountered in the test borings were described
and samples retrieved for the subsequent laboratory study.
- The laboratory study included tests of select soil samples
obtained during the field study to help assess:
the soil strength potential (internal friction angle and
cohesion) of samples tested and
the moisture content and density of samples tested
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