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h) a Stormwater Man.igement Inc. StormFilter, designed using the following <br />critcri.i <br />Storm Filtcr. <br />The following au�c the �iry's condition>: for use of SMI StormFiltcrs for runoff treatmenC <br />�) <br />3) <br />4) <br />7) <br />8) <br />The 'llcr mus� hc preccded_p��rcatment wetvault/tank containing at <br />least 30°lr, QLili�6-m�nfl�, 24-li�ur stonn runoff volume from the contributing, <br />devclop�$rlr:uuages�rca. -- -- <br />7'he StormFiiter must tmat at leasl the 6-month, 24-hour srorm. <br />T►Ze Stonnfiltc�� car�ridges sl�all bc de�igned with a maxinmm tlow rate of 7.5 <br />��m �crs:artridgc, rlows erceeding 7.5 gpm shall be bypassed around thc <br />syslem, but should gencrally pass throagh the pretreatment wetvaulUtank. <br />The StormFilter media shall tcvgee dissolved pollutunts and nu�rients, in addition <br />to lolal suspended solids. As �;iore efFective medit� become available in the future, <br />thc StonnPilter shall bc upgraded, during routine cartridge replaccment, to utilizc <br />U?esc improved media. <br />The Stormrilter shall be desiened �_vith the minimum licad.differential behvecn <br />inlet and ouUet thal is mcomr,iended by the manufacturer ib� tli� speciCc model <br />'�- — - _ <br />- -- ---- <br />use �s rcam hydraulic ralculations will be_performcd.to-demonstratethat <br />dow ' ctui�ondiUons_will-not-:�duec-thahydraulic p�tential across Uie filter, to <br />Ies�ihan t�i.�it r�c;ntuuiendecLh�ll�e_mtipufacturer due to backwater effeciti. <br />�-- <br />Routine mainlenance of the StormFilter is re�c uired. A detaileci operation and <br />inaintenance p an d system must be prepared for approval by the Ciry. A <br />_'— ------ - ----- <br />certificate of system mmntcllan�=must be submitted to the City aniivally. <br />----- - <br />Maintenance and operation of Ihc Storm�ilter on this site shull be adap[ed, in thc <br />fuWre, to re[]ect Ihe curcent knowledge mgarding this emerging technology. <br />All other c�pplicable, and non-conf7icting, criteria in the currcnt edition of SMI's <br />Product Design Manu.�l shall he followed in the design, construction, and <br />maintenanec of tLe SMf StormPiller on this site. <br />F_o1_StormFillers-Ioc�tcd downstre:uiLof_cletenti�n systems, tlie SMI mass lo.iding <br />design procedure, with the following assumption�, shall be ulilized: <br />a. TSS removal required = 80�10 <br />b. Vb = the vo(wue of dead storage plus the 7-day average live storage <br />volume from the routing of the 6 month, 24-hour storm through thc <br />dclention system (if a 7-duy routing is not avaiiable, use Vb = volume of <br />dead sroragc) <br />c. Vr - thc runoff volume fl�om the mean annunl stonn (use precipitation <br />volume of O.d8 inches) <br />d. Depth of �i�ater i�� basin, H= depth of Vb <br />e. Mean annual rainfall = 37 inches <br />Percent rmioff capWre = 90�Io <br />g. Event Mean Concentration (EMC) = 100mg/L <br />h. Allowable cartridge Ilow rate = 7.5 gpm <br />�j <br />s:\jzimmcnn\word\pr_181h avc <br />7 <br />