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CYPRUS ORCHARD VALLEY COAL CORPORATION <br />DRAINAGE DITCH DESIGN SUMM ARY: <br />-------- <br /> <br />• 10-YEAR 10-YEAR 100-YEAR 100-YEAR <br />' SLOPE PEAKFLOW VELOCITY PEAKFLOW VELOCITY <br />SECTION PAGE J/B/S (%) (cfs) (fps) (cfs) (fps) <br />-------- <br />CHANNEL ------------------ <br />"II" DRAINAGE AREA ------------------------------ <br />(REFER TO MAP N0. 8-lA): ----------- ----------- <br />MM D46 111 18.3 2.02 4.83 3.49 5.74 <br />II D48 111 8.6 2.02 2.86 3.49 4.8 <br />CULVERT "0" DRAINAGE AREA (REFER TO MAP N0. 8-lA): <br />U D50 111 ~ 2.0 0.50 2.08 0.97 2.69 <br />CULVERT "L" DRAINAGE AREA (REFER TO MAP N0. 8-lA): <br />K D52 111 6.3 3.54 3.16 N/A N/A <br />CHANNEL "L" DRAINAGE AREA (REFER TO MAP N0. 8-lA): <br />L D53 111 7.7 0.71 2.74 N/A N/A <br />VERT "D "' DRAINAGE AREA (REFER TO MAP N0. 8-lA): <br />N D54 111 4.8 1.03 3.19 N/A N/A <br />CULVERT "F" DRAINAGE AREA (REFER TO MAP N0. 8-lA): <br />0 D55 111 8.2 0.37 2.32 N/A N/A <br />CULVERT "G "' DRAINAGE AREA (REFER TO MAP N0. 8-lA): <br />P D56 111 5.0 1.56 3.96 N/A N/A <br />CULVERT "H" DRAINAGE AREA (REFER TO MAP N0. 8-lA): <br />g D57 111 7.3 0.46 2.26 N/A N/A <br />CULVERT "I" DRAINAGE AREA (REFER TO MAP N0. 8-lA): <br />R D58 111 6.0 1.77 3.76 N/A N/A <br />~NNEL "S" DRAINAGE AREA (REFER TO MAP N0. 8-lA): <br />S D59 111 7.8 3.69 4.98 N/A N/A <br />O-2 ^ <br />