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10/24/96 page 3 <br />SANBORN CREEK MINE <br />COAL WASTE BANK DESIGN <br />2~4=INCH_25_YEAR_-24_HOUR-STORM-EVENT________________________________ <br />BASIN SUMMARY <br />BASIN ID: A6a <br />SCS METHODOLOGY <br />TOTAL AREA........ <br />RAINFALL TYPE....: <br />PRECIPITATION....: <br />TIME INTERVAL....: <br />NAME: WEST COAL FACE <br />1.08 Acres <br />TYPE2 <br />2.40 inches <br />5.00 min <br />BASEFLOWS: <br />AREA... <br />CN..... <br />0.00 cfs <br />PERV <br />1.08 Acres <br />90.00 <br />2.00 min <br />IMP <br />0.00 Acres <br />0.00 <br />0.00 min <br />TC..... <br />i <br />ABSTRACTION COEFF: 0.20 <br />TcReach - Shallow L: 280.00 ks:13.00 s:0.5000 <br />PEAK RATE: 2.06 cfs VOL: 0.13 Ac-ft TIME: 725 min <br />BASIN ID: A6b <br />SCS METHODOLOGY <br />TOTAL AREA........ <br />RAINFALL TYPE....: <br />PRECIPITATION....: <br />TIME INTERVAL....: <br />NAME: EAST COAL FACE <br />1.08 Acres <br />TYPE2 <br />2.40 inches <br />5.00 min <br />BASEFLOWS: <br />AREA... <br />CN..... <br />TC..... <br />0.00 cfs <br />PERV <br />1.08 Acres <br />90.00 <br />2.00 min <br />IMP <br />0.00 Acres <br />0.00 <br />0.00 min <br />ABSTRACTION COEFF: 0.20 <br />TcReach - Shallow L: 280.00 ks:13.00 s:0.5000 <br />PEAK RATE: 2.06 cfs VOL: 0.13 Ac-ft TIME: 725 min <br />BASIN ID: A7 <br />SCS METHODOLOGY <br />TOTAL AREA........ <br />RAINFALL TYPE....: <br />PRECIPITATION....: <br />TIME INTERVAL....: <br />NAME: DRAIANGE TO POND DIVERSION <br />0.65 Acres <br />TYPE2 <br />2.40 inches <br />5.00 min <br />BASEFLOWS: <br />AREA... <br />CN..... <br />0.00 cfs <br />PERV <br />0.65 Acres <br />63.00 <br />2.00 min <br />IMP <br />0.00 Acres <br />0.00 <br />0.0o min <br />TC..... <br />ABSTRACTION COEFF: 0.20 <br />TcReach - Shallow L: 200.00 ks:5.00 s:0.4100 <br />PEAK RATE: 0.07 cfs VOL: 0.01 Ac-ft TIME: 725 min <br />~J <br />