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REV88495
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REV88495
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Entry Properties
Last modified
8/25/2016 3:10:38 AM
Creation date
11/21/2007 10:42:47 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981019
IBM Index Class Name
Revision
Doc Date
1/29/1992
Doc Name
COLOWYO MINE PN C-81-019 PR-01 EXCESS SPOIL FILLS RESPONSE TO GEOTECHNICAL ADEQUACY
From
MLRD
To
COLOWYO COAL CO
Type & Sequence
PR1
Media Type
D
Archive
No
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!~~ I~. ' • <br />4. Rule 4.09.1(11) addresses inspection of the fill and <br />underdrain. CTL/Thompson, Inc. recommended that inspections <br />be undertaken during construction of the fills to verify the <br />natural sorting that occurs as a result of gravity separation <br />and to verify that the underdrain is not contaminated by spoil <br />materials. No specific provisions to complete these two <br />verifications are included in the "Inspection Plan". <br />Colowyo should develop inspection techniques to monitor these <br />two conditions as part of its "Inspection Plan". <br />Thank you for your help in this matter. Should you require <br />additional information, please contact me at my office. <br />Sincerely, <br />~~ `-~-~~ <br />Stephen F. Wathen <br />Reclamation Specialist <br />cc: Larry P. Routten, MLRD <br />Enclosure: Memo from Jim Pendleton, MLRD (January 28, 1992) <br />t <br />
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