2017-08-08_REVISION - M1973021

• Permit No: M1973021
• IBM Index Class Name: Revision
• Doc Date: 8/8/2017
• Doc Name: Request for Technical Revision
• From: Aggregate Industries GEI Consultants, Inc.
• To: DRMS
• Type & Sequence: TR5
• Email Name: MAC
• Email Name: WHE
• Media Type: D
• Archive: No

Table 7. FLAC Slop a StabilityAnalysis Results
Bench Height
Bench Face Bench Width Intermediate # Benches aboveiate AC d FL AC F Slope
�
Case (ft)1 Angle (ft) Bench Elevation Intermediate Bench Width Safety Factor of
i (°) (ft, NAVD88) Bench (ft) System
I
1 70 90 30 7000 14 100 3.86
2 70 90 30 7000 3 100 1.34
3 70 90 30 7000 14 50 3.78
4 70 90 30 7000 3 50 1.28
5 70 90 30 7000 14 40 3.73
6 70 90 30 7000 3 40 1.28
7 70 90 30 7000 14 30 3.70
8 70 90 30 7000 3 30 1.26
9 70 90 30 N/A N/A N/A 8.11
10 70 90 30 N/A N/A N/A 1.95
11 70 90 25 7000 14 25 3.56
12 70 90 25 7000 3 25 1.15
13 70 90 25 N/A N/A N/A 7.89
14 70 90 25 N/A N/A N/A 1.90
15 70 90 30 6650 19 100 3.88
16 70 90 30 6650 19 100 1.21
17 70 90 30 6650 19 50 3.75
18 70 90 30 6650 19 50 1.17
1 All benches above El. 7000 ft have a height of 40 ft, an angle of 90°, and a bench width of 40 ft.
2 For Cases 9 and 13, SLOPE/W was unable to calculate a realistic slip surface.
3 No intermediate bench modeled.
------------._—
Aggregate Industries Morrison Quarry GEI Consultants, Inc.
South Quarry Highwall Design Technical Revision 26 August 2017