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• APPEN~.7-5 <br />SB-SLOPE <br />Simplified Bishop Slope Stability Analysis <br />PROJECT: Cool Ridge No. 1 Mine <br />LOCATION: New Castle <br />FILE: NCIG SOIL• DENSITY <br />COMPLETE SLOPE CROSS SECTION SHOWN ~ 125.0 <br />2 0.0 <br />CIRCLE x Y RADIUS FS <br />1 33.5 5603.5 16.3 1.57 <br />Notes: <br />COHES: <br />200. <br />0. <br />1. Slope Stability Analysis of NCIG Pond A <br />2. Section from Figure 4.3-6, Section A-A <br />s635 - 3. Phreatic Surface at Spillway Invert <br />4. Rapid Pond Drawdown <br />5630 5. Soil Strength from Exhibit 4.7-5 <br />12/2/94 Hepworth-Pawlak Letter Report <br />5625 I hereby certify I prepared this stability analysis dw <br />5620 May, 2000 utilizing the computer program SB-SLq <br />Engineering Software, Inc. The Pond A emba f <br />factor of safety in excess of 1.3 to meet the <br />5615 4.05.6(11)(k). The information presented ojl~~l~fc <br />s6,o correct to the best of my knowledge and b~l~ef ~ <br />it-- ~ 6 <br />o J! 'Stc <br />~ 5605 ~Q~ ••• <br />a ~ ~ ~•;ss <br />Zl 5600 ~ <br />w ?-1-3 1 ~_ <br />1'1 13-I ~ 5-16-1 .11-POND <br />5595 7-1 <br />B-I <br />`9-1 <br />5590 10_1 <br />11-1 <br />5565 <br />5560 <br />5 10 15 20 25 30 35 10 ~5 50 55 60 65 70 75 60 85 <br />HORI20NTAL DISTANCE <br />+ Number after hyphen('-' <br />J.E. Sower & Associates <br />