PERMFILE121433

• Permit No: C1982056
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: EXHIBIT 25m Roadway Certification Letter, FCM #1 Access Road
• Media Type: D
• Archive: No

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Geocechnical /Environmental Engineering • Materials
Subject: Pavement Evaluation &
Recommendations, FCM #1 Access Road,
Foidel Creek Mine, Rout County,
Colorado.
December 10, 1996
Twentymile Coal Company
29515 RCR #27
Oak Creek, CO 80467
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Attn: Mr. Rick Mills
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Gentlemen:
This report presents the results of a pavement evaluation and recommendations for the FCM #1
(Propane Tank) Access Road located on the Foidel Creek Mine property in Rout[ County, Colorado.
A field exploration program was conducted to obtain information on [he subgrade conditions at [he
site. Material samples obtained during the subsurface investigation were tested in the laboratory to
• provide data on the classification and engineering characteristic of the subgrade soils. The results of
the field cad laboratory investigations are presented herein.
This report has been prepared [o summarize the data obtained and to present our conclusions and
recommendations, based on [he existing conditions encountered and [he assumed traffic loadings. A
discussion of geo[echnical engineering considerations related to resurfacing of the access road are also
included.
•
We understand that the subject road is approximately 250 to 350 feet is length. The access road is
subjected [o pickup truck traffic and occasional delivery and construction truck traffic.
Subsurface Conditions: The field investigation for this project was conducted on November 25, 1996.
Two (2) test holes were advanced at [he site to explore the subgrade conditions and to obtain samples
for laboratory testing. The test holes were excavated with a rubber tire backhoe. The test holes were
advanced to depths ranging from 2 to 3 feet. The test holes were logged by a representative of
Northwest Colorado Consultants, Inc. Graphic logs of [he test holes are not drawn; however, a
discussion of [he subgrade soil types encountered in the test holes aze presented later in this report.
Samples obtained from the test holes were examined and classified in the laboratory by the project
engineer. Laboratory testing included standard property tests, such as natural moisture contents, dry
unit weights, grain size analyses and liquid and plastic limits. The laboratory testing was conducted in
general accordance with applicable ASTM and AASHTO specifications.
[phone] • Fax [phone]
29585 U.S. 40 West, Box 775226 • Steamboat Springs, CO 80477 ~-~~(p