2011-09-30_PERMIT FILE - C1980007A ‎(14)‎

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 9/30/2011
• Doc Name: Site Location
• Section_Exhibit Name: Exhibit 82 Figures
• Media Type: D
• Archive: Yes

Mountain Coal Company RPE Expansion: Seepage & Stability Analysis
CL Cross - Section: Proposed, Crest at El. 7,440, Design Slope
USSR, Seismic
File Name: RPE DesignSlope.gsz
Last Saved Date: 61612011
Factor of Safety: 0.86
Horizontal Seismic Acceleration = 0.0698g
7.6 Name: Buttress
Model: Mohr - Coulomb
7.5 Unit Weight: 150 pcf
Unit Wt. Above Water Table: 145 pcf
7.4 Cohesion: 0 psf
Phi: 40 °
7.3
7.2
7.1
7.0
O
O 6.9
O
6.8
X
6.7
6.6
O
N 6.5
N 6.4
W
6.3
6.2
6.1
6.0
5.9
5.8
Name. Coal
Model. Mohr - Coulomb
Unit Weight: 85 pcf
Unit Wt. Above Water Table: 82.4 pcf
Cohesion: 5000 psf
Phi: 30 °
Figure 2 -6
Name. Refuse
Model: Mohr - Coulomb
Unit Weight: 93.7 pcf
Cohesion. 228 psf
Phi: 33.8 °
0.86
j Name: Shale
Model: Shear/Normal Fn.
Unit Weight: 142.5 pcf
Unit Wt. Above Water Table: 135 pcf
Name. Colluvium (Undrained) Strength Function: Shale (Halfway: FS /Residual) 7.6
Model: Mohr - Coulomb
Unit Weight: 135.4 pcf 7.5
Unit Wt. Above Water Table: 130 pcf
Cohesion: 487 psf 7.4
Phi: 14.8 ° 7.3
Name: Sandstone
Model: Bedrock (Impenetrable)
7.2
7.1
7.0
.•
6.8
O
6.7 Q
6.6 k
6.5
6.4
6.3
6.2
6.1
6.0
5.9
5.8
5.7 1 1 1 1 1 1 5.7
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5.0 5.1 5.2 5.3
Horizontal Distance (ft) (x 1000)