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Storm Pilter: <br /> The Storm Filter"Detennining Numbcr of Cartrid es" sheet for the project must also be <br /> included in ihe drainage report. See s+�r��.,,�� I�er c 2( c u.la'h�m � kee�(-, <br /> Pumn: <br /> Pump siz.ing calculatrons are required. In particular, the system curve (the pump systcm's <br /> total dynamic head versus the 11ow rate in the system) must be plotted on the pump <br /> characteristic curve in ordcr to show the operating point of thc pump. 5�E Pu�tp DATA �►`� <br /> (L E Po 2-f. <br /> The clevations of the pump switches should be set to provid� a reasonable cycle time <br /> given the capacity of the pump, the intlow rate, and the volume in the pump basin <br /> between the on and offclevations. M�ti �YrLE Ti►�6 wft� ExcE�il �D IK ih[� <br /> i3sgp►-+• <br /> The pump/drainage system must be designed so that pump failure will trigger a high <br /> water alarm. One method to implement this requirement is taking thc pump chamber <br /> "off-line" by using two restricting devices in the restrictor manhole. One restrictor would <br /> send lhe 2-yr storm flow to the pump chamber; the oUier would direct tlows gre�ter than <br /> the 2-yr flow downstream of the pump chamber. The pump chamber should have an <br /> ovcrf7ow and pump alann set at thc elevation of the 2-yr detained storm, and the pump <br /> should bc placed deep cnough in the basin that the overf7ow elevation is at least one foot <br /> above the pump-on switch. Thercl'ore, if the pump luils and the 2-yr storm is nol pumped <br /> to thc vcgctatcd trcatment ccll, it will cvcrl7ow instcad to thc downsu•cam systcm. <br /> However, the alarm will go off, and the 2-yr storm will have still been detained prior to <br /> rcicascdo�vnsu�cam. xede�z�ls ok �Icw. • <br /> PLAiVS: <br /> Gcncral: <br /> "l�hc Ias1 catch basin in a drivc�+�ay sloping to���ards Ihc entrancc of a project shall have <br /> raised asphalt herms, a miniminn af 4 inches liigh, located to help direct upstreum runoft� <br /> to the catch basin ai d prevent it from bypassing the on-site drain,�ge sytilent. �se�rw� tins <br /> I�e�,� prov�ded <br /> City standards require a catch basin or manhole at all changes in draina�c pipe di�metcr, <br /> alignmcnl and/orgrad1e�. �'.Ne lse�ta..e +��.^ t�a�,11o�a.ti ao��+�esSec( -1-ll, iS I�SISu� <br /> p�t OV�G��n2� .�iu.7'�+�t�Z�f �XCf�'� Yvr O�AT �2�' �Or V�41'�2�'PG� '�''E4711.aPM� <br /> V G�Q. v <br /> Wclpund rommcnls: <br /> "I'hc �aater quality swale is fullilling thc City`s requirement for ihe vcgetuted trcutment <br /> rcll of a wctpond. "I'o help lhc City Io inco�pora�c thc r,rojcct's pl.ms into the City's GIS. <br /> thc watcr quality swalc must bc labcled as a vcgctaicd U�ealment ccll. OK <br /> 'I'hc ��cgclated U�eatment ccll must also pass u Icak tcsi (thc nolc on thc plans must be See tiv�3 <br /> cxpundcd �o includc thc vcgctatcd u�catmcnt ccll). II ihc na�ive soil� arc not sufficicnt to o� Cw: l <br /> prcvcnt cxfilu�ation from the lrcaiment ccll. thc u�catmcnt cell sho�dd be lined. P�a,N,L -o <br /> Y..Qu.r. K.o+tS �,�ra✓�cioc� <br /> bY �,thdS[k�1F l�rc��'�eCf. <br /> ,:\jiimmrrm\o��rdlpr_slnicdiral �J <br />