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�I <br />CONVEY�NGE CALCULATIONS <br />T6e oonveyana syatem conarts of inverted cruwn d�iveway� wiW ca�h baaes acd <br />��d�gnund piPes• The syitan will di�cF�uge to the water qwlity/ddaqion pond to the <br />north of the site. A artull pottion (appro�anutdY 2,000 �9uare feet toql) of the propo�ed <br />atph�h will Aow acrosa the adeting bridgea W the atotmwata oome,yanoe �long Nandaon <br />Rad. <br />The conveyance ayatan was deeigned for the 25-yar daign uo�m eveot with a mioiarun <br />of tix inchea of BeeLoard within ach cuch buin. Addidondly� the ryrtam wa� ctiecked <br />for overtopping with the 100-yr rtam evait. The oa►veyanoe c�p�caty of the �yuam waa <br />c6ecked by hydrauGc grade Wro cdaJuions. Runoff w�s �ed uaog the Ratiowl <br />Method with an wumed 5-minute time of conoa�tration for a�ch buia ln the cap�aty <br />wlytit, the rucaff ooe�cia�t was a�eumad W 0.9� re8axing the I�igh impaviaw <br />coverage of tlrc aite, but ignoring t6e Imd�c�ping ara (a mmavative wlya�). RainAll <br />inta�itiea were taken from the I.D.F. wtvea for the Chy of Eva+�tt (iee Appeodix). The <br />hydauGc grade line c�lculationa were Performed uainB Fagle Point SoRwsro't oon�puta <br />P�'oB�� �E4IDL��. A amrtuty of the hyd►-�ulic �ade fiae c�lad�tiom for the <br />conveyu�oe syatan followa. A �opy of tMe aau� output 6om the ala�ktion�, which <br />includee the Rational Method 9ow atictutes, ia included in the Appatdix. A oopy of the <br />Pipe Tributary Arra Exhibit (I 1x17 she�t) is also included in the Appeodix. <br />Srornr Drainage Reporf For Seaway T�act 2, Lofs /& 2- Page S <br />� <br />