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PERMFILE129986
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PERMFILE129986
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Last modified
8/24/2016 10:30:56 PM
Creation date
11/25/2007 8:30:53 PM
Metadata
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Template:
DRMS Permit Index
Permit No
C1982056
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Section_Exhibit Name
EXHIBIT 07a STABILITY INVESTIGATION OF THE TWENTYMILE SANDSTONE CLIFF
Media Type
D
Archive
No
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i <br />LIST OF PHOTU(~RAi'HS <br />~• Photo i. Rock outcrop typical of Zone 1, showing upper part of Twentymile Sar~jstone. <br />Fhoto 2. Rock outcrop on east side cf Zonc 1 <br />Fhoro 3. Rock outcrop typical of Zone 2, showing slumped zone to the right (see Figure <br />3). <br />Photo 4. Another view of outcrop in Zone 2. Note potentially unstable pinnacle. <br />Photo 5. Rock outcrop typical of Zone 3 to left, with Zone 4 to right. <br />Photo 6. Another view of outcrop with Zone 3 to left and Zone 4 to right. <br />Photo 7. Rock outcrop typical of Zone 5. <br />1 Photo 8. Another view of outcrop in Zone 5. <br />Photo 9. Rock outcrop typical of Zone 6. <br />Photo 10. View of western side of Zone 6 showing the Deer Trail zone on left cutting <br />1 . through the outcrop. <br />1 Photo 11. View of typical jointing seen in Zone 5. Note the en echelon jointing (e.g. <br />1 where finger is pointed) and the sets of conjugate fractures (top center of <br />photo). Note undercutting at base of outcrop. <br />Photo 12. View of joint pattern to the west of the Deer Trail zone. Note steep faces and <br />incipient block failures (top left and top right). <br />Photo 13. Typical pattern of blocks in Zone 3. Note foreground blocks on left that have <br />already slipped and are resting at the base of the slope. No[e potential toppling <br />of block (top right). <br />Photo 14. Note large block (left one third of rock face) that has already slipped at the <br />west side of the Deer Trail zone (Zone 5). Note massive jointing. <br />Photo 15. View from Cyprus office building showing rock outcrop in relation to the road. <br />1 Area of concern is the left half of the outcrop shown on photo, and continuing <br />around the corner to the northwest. <br />Photo 16. The rock block in foreground has nearly reached the road and is equivalent in <br />size to a ten-foot cube. <br />• iv <br />
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