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�e Intlow (Devcloned Condition) <br /> Please refer to the Developed Conditions,�fap located in the Appendix. <br /> In the developed condition, approximately 0.64 acres of the 1.60 acres will be impervious <br /> area (CN = 98) and the remaining 0.9G acres will be landscaping (CN = 8G). The <br /> developed condition hydrographs are as follows: <br /> TOTAL AREA: 1.G0 Acres BASEPLOWS: 0.00 cfs <br /> RAINFALL TYPE: Type IA TiME INTERVAL: 10.00 min <br /> TIME OF CONC: 2.17 min ABSTRACT. COEFF: 0.20 <br /> PERVIOUS AREA IMPERVIOUS AREA <br /> AREA: 0.9G Acres AREA: 0.64 Acres <br /> CN: 86.00 CN: 98.00 <br /> T�Reach - ShaL Conc. Flow: L: 120 feet k,: 27.00 s: 0.0490 ft/ft <br /> T�Reach - Channel Flow: L: 535 feet k�: 21.00 s: 0.0537 ft/ft <br /> HYDROGRAPH SUMMARY <br /> Srorm Precip. Peak Flow Volume Time ofPeak <br /> in CFS Ac-ft min <br /> 2-Year 1.55 0.?9 0.11 470 <br /> 5-Year 1.93 0.41 O.15 470 <br /> 10-Year 2.23 0.50 0.19 470 <br /> 25-Year 2.G3 0.G4 0.24 470 <br /> 100-Year 3.21 0.84 0.31 470 <br /> Staee-Stm•nee-Disch:irae T:ible <br /> CUSTOM STORAGE ID No. DET I <br /> Description: 82 If of 78-inch q CMP detention pipe and two 54-inch O catch basins <br /> COMBINATION DISCHARGE ID No. DIS3 <br /> Description: Multi-Orifice Standpipe and 12-inch Overflow Riser <br /> Outlet Elev: 549.55 <br /> Orifice #1 Elev: 547.55 ft Orifice #I Diameter: I in. <br /> Orifice #2 Elev: 553.75 ft Orifice #2 DiTmeter: I 5ii� in. <br /> Riser Diameter: 12.00 in Riser Elev: 556.50 R <br /> Weir Coetlicient.: 3.782 �rifice Coeflicient.: 9.739 <br /> STORII7 URAINAGE REI'OR'i'FOR IN'PR:1\1'ES7'-SEA�1'AY - PAGE 16 <br />