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

~1
TABLE 8. HIGHWAY 133 & REGIONAL SLOPE STABILITY ANALYSIS RESULTS
Scenario Static FOS Psuedosiatic
FOS
Highway 133 Embankment 1.91 1.70

Original Regional Slope with No RPE Load 1.9 I.5
Regional Slope with Completed RPE Load 5.3 3.8
TABLE 9. PARAMETERS USED FOR ESTIMATING RUNOFF -SCS CN METHOD
Parameter Value
Undisturbed Terrain SCS CN 60
Disturbed Excavated Surface SCS CN 88
Exposed Refuse SCS CN 75
Reclaimed RPE Slope SCS CN 88
10-yr, 24-hr Type 11 Precipitation Event I.8 inches
25-yr. 24-hr Type 11 Precipitation Event 2.2 inches
100.vr. 24-hr Type II Precipitation Evrnt 2.8 inches
TABLE 10. RPE RUNOFF ESTIMATE RESULTS'
RPE
Construction
Phase Runoff
Surface Runoff
Area (acres) Type 11
Precipitation
Event Peak
Runoff
(cfs) Total
Runoff
(acre-ft)
I- 4 Undisturbed Upland 63 10-yr, 24-hr 13 I.1
25-yr, 24-hr 24 2.1
100.vr, 24-hr 46 3.9
1 Disturbed Excavated Surface 3.8 10-yr,24-hr 3.6 0.26
25-yr.24-hr 5.0 0.36
100-}•r.24-hr 7.2 0.52
2 -Fill Exposed Refuse Surface 3.8 10-yr. 24-hr 2.1 0.09
25-yr.24-hr 3.5 0.15
100.yr.24-hr 6.0 0.25
3 -Fill Exposed Refuse Surface 6.1 10-yr, 24-hr 1.3 0.12
25-vr, 24-hr 2.2 0.20
100-vr, 24-hr 3.8 0.35
3 -Fill Reclaimed RPE Surface 113 10-yr, 24-hr 17 0.86
25-vr, 24-hr 24 1.20
100-vr. 24-hr 35 1.74
4 -Fill Exposed Refuse Surface 4.4 10-vr. 24-hr I? 0.1 I
25-yr.24-hr 2.0 0.18
100-vr. 24-hr 3.5 0.30
4 -Fill Reclaimed RPE Surface 17.1 10-yr, 24-hr 25 1.30
25-vr.24-hr 34 1.82
100-yr. 24-hr 50 2.64
I. Calculations shown in Appendix L.