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10/24/96 page 6 <br /> SANBORN CREEK MINE <br /> COAL WASTE BANK DESIGN <br />~'-.'j 2.0-INCH 10 YEAR, 24 HOUtt STORM EVENT <br /> a:::ssaamaaaa---a:aaasaaaaaasamaasaa <br />REACH SUMMARY aaaas:aaaaasaasasaasa:a <br /> <br /> DITCH REACH ID No. D06 <br /> Ditch Length: 220.00 !t Ditch Width: 0.00 tt <br /> Side Slopel 1.00 Ditch S1opa: 0.3200 !t/!t <br /> Sids slope2 1.00 Contrib Bas: <br /> Mannings n :0.0250 Dn Invert 0.00 !t <br /> Dn W.S. Elav:0.0000 Num Stapa 10 <br /> Trib Area: 4.18 Ac. Design Flow 1.96 c!s <br /> Depth 0.45 ft Vel 9.85 tps <br /> Upstream W.S. Elev: 0.00 tt. <br /> DITCH REACH ID No. D07 <br /> Ditch Length: 180.00 ft Ditch Width: 0.00 !t <br /> Side Slopel 1.00 Ditch Slope: 0.3200 tt/!t <br /> Side slope2 1.00 Contrib Bas: A4 <br /> Mannings n :0.0250 Dn Invert 0.00 tt <br /> Dn W.S. Elev:0.0000 Nu3 Steps 10 <br /> Trib Area: 5.17 Ac. Design Flow 1.98 c!s <br />~•. Depth 0.43 !t Val 9.87 !ps <br />' Upstream W.S. Elev: 0.00 !t. <br /> <br /> DITCH REACH ID No. D10 <br /> Ditch Length: 100.00 !t Ditch width: 0.00 tt <br /> Side Slopel 1.00 Ditch Slope: 0.0001 tt/tt <br /> Side Slopel 1.00 Contrib $as: <br /> Mannings n :0.0100 Dn Invert 0.00 tt <br /> Dn W.S. Elav:0.0000 Nua Steps 10 <br /> Trib Area; 0.65 Ac. Design Flow 0.01 cts <br /> Depth 0.23 ft Val 0.28 !ps <br /> Upstream W.S. Elav: 0.00 !t. <br />-- <br />