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2018-03-02_REPORT - C1980007
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2018-03-02_REPORT - C1980007
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Last modified
3/5/2018 8:48:01 AM
Creation date
3/2/2018 12:21:05 PM
Metadata
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Template:
DRMS Permit Index
Permit No
C1980007
IBM Index Class Name
Report
Doc Date
3/2/2018
Doc Name
Quarterly Subsidence Monitoring Report
From
Wright Water Engineers, Inc
To
DRMS
Annual Report Year
2017
Permit Index Doc Type
Subsidence Report
Email Name
LDS
Media Type
D
Archive
No
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Fall 2017 Subsidence and Geologic Field Observations <br />South of Divide and Dry Fork Mining Areas <br />2017 field visit. Figure 10 shows these cracks as originally observed whereas Figure 11 shows the <br />same area as observed during our fall 2017 field visit. <br />Figure 10. Eastward view from spring 2017 of <br />two sub -parallel subsidence cracks along the <br />access road to the MVB E6-14 pad. The <br />orientation of these cracks is approximately <br />N60°E. <br />4.3.3 Location 4 <br />Figure 11. Fall 2017 view of the same area and <br />subsidence cracks shown in Figure 10. <br />Location 4 is MVB E6-14 pad, which is also the termination of Traverse C -C . -Subsidence cracks <br />associated with this pad and the access road leading onto the pad were first observed during the <br />spring 2017 field visit. Subsidence cracks on the pad were observed to have created small graben - <br />like structures where material between the parallel cracks had dropped in elevation (Figure 12). <br />Evidence of these subsidence features remained during our fall 2017 field visit but were greatly <br />diminished due to weathering (Figure 13). <br />831-032.799 Wright Water Engineers, Inc. Page 19 <br />February 2018 <br />
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