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<br /> <br /> <br />OND <br />NUMBER SNOWCAP COAL COMPANY <br />Table 13-6 <br />SEDIMENT POND SPILLWAY DESIGN <br />DESIGN PRIMARY EMERGENCY <br />FLOW SPILLWAY SPILLWAY <br />CFS <br /> 1 & 2 23.85 Pumped 2 - 30" Culvert <br /> 6 33.5 6" PVC 36" Culvert <br /> 7 7.0 Pumped 5' wide rip-rapped channel <br /> 8 56.8 Pumped 20' wide rip-rapped channel <br /> 9 18.6 6" CMP '/: 30" Culvert <br />• 10 44.8 6" PVC Concrete Flume 5' wide x 1'3" deep <br /> 11 50.9 Pumped 10' wide rip-rapped channel <br /> 13 16.5 6" PVC 4' wide rip-rapped channel <br /> <br /> <br /> <br />• (Rev.12/02) <br />