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2010-10-22_REVISION - M2008017 (4)
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2010-10-22_REVISION - M2008017 (4)
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Last modified
6/16/2021 5:48:36 PM
Creation date
10/25/2010 9:07:19 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M2008017
IBM Index Class Name
REVISION
Doc Date
10/22/2010
Doc Name
TR-01 Adequacy Review Comment Responses
From
J&T Consulting, Inc.
To
DRMS
Type & Sequence
TR1
Email Name
MAC
Media Type
D
Archive
No
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The following recommendations for monitoring of slope stability should be followed: <br />A visual inspection of the excavated slopes should be done on a weekly basis for <br />the first 6 months of mining. This inspection should consist of walking the existing <br />ground and looking for any signs of stress cracks or other potential signs of slope <br />failure. Some minor sloughing of slopes is expected on any mine site. The intent <br />of this inspection is to locate potential major slope failures that could potentially <br />extend back into a structure. <br />2. A visual inspection should be done after a major precipitation event that has <br />saturated the ground using the same procedures. A major precipitation event <br />would be defined as a storm that produces an intensity level reached once in 50 <br />years on the average. <br />3. If a visual inspection detects signs of a potential slope failure, qualified personnel <br />should be contacted to evaluate and recommend remediation work to stabilize <br />the area. <br />4. If no visible signs of slope failure are detected within the first 6 months, then the <br />inspection period could be reduced to once per month or after every major <br />precipitation event. <br />Broken Arrow Investments, LLC - Derr Pit - M-2008-17 <br />11 J&T Consulting, Inc. Technical Revision No. 1- Slope Stability Analysis <br />'a i Page 6
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