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Muuntain View Plaza Detention Calculations <br />April 11, 2005 <br />Project Precips <br />�� yrJ 1.55 in <br />[5 yrJ 2.00 in <br />(10 yrj 225 in <br />[25 yr] 2.60 in <br />[100 yr] 325 in <br />[6 monlhJ 0.99 in <br />BASLIST2 <br />[Existing] Usin� [TYPE1 AJ As �2 yr] <br />[Existing) Using [TYF'E1Aj As [10 yr] <br />j�xisting] Using [l'YPE1A] As j700 yrj <br />[Praposed] Using [TYPEtA] As [2 yrJ <br />[Proposedj Using [TYPEtA] A, [10 yr] <br />[Preposedj Using [TYPEIA] As [100 yr) <br />LST[ND <br />BasinlD <br />Esisting <br />Exisling <br />Existing <br />Proposed <br />Proposed <br />Proposed <br />Peak Q Peak T Peak Vol Area Method Raintype Event <br />(cis) (hrs) (ac-it) ac /Loss <br />0.0574 10.00 0.0710 2.50 S�UH,SCS TYPEIA 2yr <br />0.178G 8.67 0.1601 2.50 SBUH/SCS TYPEtA 10 yr <br />04225 8.50 0.3142 2.50 SBUH.�SCS TYPEtA t00yr <br />0.6863 7.83 02301 2.50 SBUHISCS T\'PEtA � yr <br />7.0939 7A3 0.3!i4; 2.50 S[3UHiSCS TVPEIA t0yr <br />1.G930 7.83 U.5623 2.50 S�UH!SCS TYP[1A 100yr <br />BASUST [lYPE1A] AS [2 yr] DETAILED <br />[Existingj [Proposedj <br />LSTEND <br />Drainage Area: Existing <br />Hyd Method: SBUH Hyd <br />Peak Faclor: 484.00 <br />Storm Dur. 24.00 hrs <br />Area <br />Pervious 2.5000 ac <br />Impervious 0.0000 ac <br />Total 2.5000 ac <br />Supporting Data: � <br />Pervious CN Data: <br />Existing Furest <br />Pervious TC Data: <br />Flow 1ype: Description: <br />Sheet sheet <br />Shallow Shallow <br />CN <br />81.00 <br />0.00 <br />: �� <br />Drainage Area: Proposed <br />Hyd MeLtiod: SBUH Hyd <br />Peak Factor. 484.00 <br />Storm Dur: 24.00 hrs <br />Area CN <br />Pervious 0.700G a� 86.00 <br />Loss Method: SCS CN Number <br />SCS Abs: 0.20 <br />Intv: 10.00 min <br />TC <br />0.96 hrs <br />0.00 nrs <br />2.5000 ac <br />Length: Slope: Cocft: <br />200.00 ft 2.00% 0.4000 <br />160.00ft 2.00% 5.0000 <br />Loss Method: S�5 CN Number <br />SCS Abs: 0.20 <br />Intv 10.00 min <br />TC <br />0.10 h�s <br />Travel Time <br />53.72 min <br />3.77 min <br />