PERMFILE134266

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: EXHIBIT 70 REFUSE PILE EXPANSION
• Media Type: D
• Archive: No

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TABLE 6. SUMMARY OF STABILITY ANALYSIS RESULTS

PROFILE
PHASE STATIC
FOS'
(CLAY= LINER) PSUEDOSTATIC
FOS
(CLAY LINER) STATIC
FOS
(HOPE' LINER) PSUEDOSTATIC
FOS
(HOPE LINER)
SECTION 1 ORIGINAL SLOPE 3.26 2.24
PHASE I-A N.D.' N.D.
PHASE 1-B 3.26 2.23
PHASE 1-C 3:26 2.23
PHASE I-D 1.55 1.25
PHASE 2 3.14 2.38
PHASE 3 4.25 2.95 4.42 2.96
PHASE 4 3.50 2.42 3.44 2.38
SECTION 2 ORIGINAL SLOPE 2.16 1.57
PHASE I-A 2.16 1.57
PHASE I-B 1.93 1.40
PHASE I-C 1.81 1.33
PHASE I-D 1.75 1.30
PHASE 2 2.16 1.56
PHASE 3 2.58 1.93 2.57 1.94
PHASE 4 1.75 1.34 I.BI 1.38
SECTION 3 ORIGINAL SLOPE 1.50 1.19
PHASE 1-A 1.55 ~ 1.22
PHASE I-B 1.56 1.22
PHASE 1-C N.D. N. D.
PHASE I-D N.D. N. D.
PHASE 2 N.D. N. D.
PHASE 3 2.05 1.62 2.12 1.67
PHASE 4 1.83 1.47 1.87 1.46
SECTION 4 ORIGINAL SLOPE 1.55 1.28
PHASE 1-A 1.55 1.28
PHASE 1-B N.D. N.D.
PHASE I-C N.D. N. D.
PHASE I-D N.D. N.D.
PHASE 2 N.D. N. D.
PHASE 3 2.18 1.81 2.18 1.81
PHASE 4 N.D. N. D. N. D. N.D.
1. FOS - Factor of Sa(ery
2. There was no additional development during the phaze, FOS values remain unchanged from previous result.
3. A 2-foot thick compacted clap liner was used under the coal refuse
4. An HOPE liner waz used under the coal refuse
TABLE 7. SOIL STRENGTHS REGIONAL SLOPE STABILITY MODEL
Lithology Density (pcf) Angle of Internal Friction (phi) Cohesion (psf)
sandstone' 150 38 30.000
shale' 125 17 2160
coal' 110 25 20.000
colluvium' 135 11.6 288
alluvium' 130 32 6.000
coal refuse= 68 35 1.100
I. Strength data standards established by Building Officials 8 Code Administrators International, Inc.
~r ?. Strength data based on Rocktcch. Inc. geotechnical analysis of samples obtained onsne.