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CYPRUS ORCHARD VALLEY COAL CORPORATION <br />CULVERT DESIGN SUMMARY: <br />a=° <br />. ==~___°_ _'°___=====asa~~=a~~~ ~e°°~=====a~na~~aama_ <br />10-YEAR REQUIRED _~~~=~~a~ae~_~a=~~__~ <br />100-YEAR REQUIRED <br /> CULVERT PEAKFLOW CULVERT PEAKFLOW CULVERT <br />CULVERT PAGE J/B/S DIAMETER (cfs) DIAMETER (cfs) DIAMETER <br />------- <br />CULVERT -------- <br />"F" DRA --------------------- <br />INAGE AREA (REFER TO --------------------- <br />MAP N0. 8-1A): ---------- ----------- <br />F C57 111 18" 0.37 6" N/A N/A <br />CULVERT "G "' DR AINAGE AREA (REFER TO MAP N0. 8-lA): ' <br />G' C59 111 24" 1.56 8" N/A N/A <br />CULVERT "H" DRA INAGE AREA (REFER TO MAP N0. 8-lA): <br />H C61 111 18" 0.46 6" N/A N/A <br />CULVERT _"L'__ DRA INAGE AREA _(REFER TO_ MAP:.NO. _.8c lA ).:. ._..,,. <br /> <br />' I C63 111 ' 18" "- - 1.77 -- - 9" - --• - - N/A - - -- N/A -- <br />TIMBER STORAGE AREA DRAINAGE AREA (R EFER TO MAP N0. 8-2): <br />1 C65 111,121 24" 2.79 12" N/A N/A <br />2 C67 211 24" 3.41 f2" N/A N/A <br />3 C69 311 18" 4.75 18" N/A N/A <br />TRAIN L OADOUT D RAINAGE AREA (REFER T O MAP N0. 8-3): <br />5 C79 211 30" 10.00 18" N/A N/A <br />6 C81 211 30" 1@.00 18" N/A N/A <br />7 C83 N/A 60" 38.00 36" N/A N/A <br />8 C71 111 36" 9.28 18" N/A N/A <br />WEST MINE BENCH DRAINAGE AREA (REFER TO MAP N 0. 8-6A): <br />9 C73 "** 18" 9.92 18" N/A N/A <br />10 C75 *** 24" 12.18 21" N/A N/A <br />11 C77 *** 24" 9.92 21" N/A N/A <br />*** Refer to Volume 6, Supporti ng Inform ation, Orchard Valley West <br /> Portal s, Sheet 6 Calculatio ns, by Ge o-Hydro Consulting for peak <br /> flow c alculations (recalcul ated for 1.7" precip. event). ' <br />• <br />~Z <br />