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sro�innv,creit siTL ��t.nrr <br />AUGIIS;rA A1'OODS CONDOJIINIU�[S <br />Thc actuai rcicasc tiom t6c vault is .is follows: <br />Stonn Event Allowable release rate Actual rcicasc ratc <br />2 Ycar 0.08 cfs 0.077 cfs <br />10 Year 0.42 cfs 0.35 cis <br />100 Year I.15 cfs 1.14 cfs <br />�tAY 2Q 2003 <br />P:1GG 2d <br />Storm water runoff h�om the Byp�ss Offsite Basin flows through the site trom the east <br />and is not required to be detained. The flow control devicc will bc u�rsizcd ro allo�v the <br />runoff from this b�sin to Flow through the system. Only the 100 year storni event will be <br />analyzed to upsize the notch weir as it controls the weir sizc. "fhe oritice and notch ���cir <br />�vill be up sized ns follows: <br />2 Ycar OriGcc <br />Dctention vault disch:irgc +[3ypass Otlsitc Basin <br />Q=0.03cfs+0,14cfs=0?2cfs <br />Oriticc Equation: Q = 0.C2A(2��h)' <br />widi h= 5.0?', Q= Q22 cis <br />A= 0.0197 st; ori fice diamctcr = I.90" ur 1-7i �" <br />100 Ycar Notcl� �Vcir <br />Detention vault allowablc discharge + offsite basin <br />Q= I.14 cts -F 0.70 �Cs = 1.8�1 cfs <br />Oritice Release at 5.93' hcad = 0.�3 ct's <br />Discharge through notch = 1.34 cts — 0.23 cfs = 1.61 cF.s <br />Nutch Equation: Q= C1H'' and Length =1+0.2H <br />�Vidi C=3.13, H= 96', P= �9S'. Q=].60 cfs <br />So1=0.54' <br />L = 0.�4 + 0?(0.96) = 0.74' <br />FLO�V CON"CROL INrORMA7'[ON (RCVISGD) <br />2 Ycar Orilice L'levation = 502.�0 feet <br />2 Year Oriticc Diameter= 1-7/3 inch <br />10 & 100 Year No:ch Elevation = 509.53 tcet <br />10 S, 100 Year Notch Length = 0.74 fcet <br />Overflow Glevation = 510.45 feet <br />The detention portion of the vault is contigured with three cells separated by concrete <br />walls. Thesc walls continuc from tloor to roof to pro�ide support for dic precast lid <br />pancls. The tirst cell is the "dead" storage cell designed to provide initial treatment, sce <br />BMP RD.I � Wet Vault, above. A 2' x 1.5' opening a[ the top of the soudi end of the wall <br />allows runoff to flow inro Hic south end of the open water treatement ccll. A pipe at thc <br />north end of the open water celi then conveys runoff to die "live" srorage cells. A I' x 1' <br />squarc oritice is locatcd in Uic bottom of thc wall betwcen the two "live" storage cells to <br />� <br />�`,Momso�crag�a�q�:ta �voce; sdc amn o7��roocomer�a�ssPo7-0n oocDWHlsrm <br />