Laserfiche WebLink
( <br /> � <br /> ( <br /> ( <br /> � titorn»valcr'1'rcatment <br /> � Uesign Criteria for Slormfilter Syslem <br /> i • The stormfilter must bc preccdcd by x pretreaunent wetvault containing at least <br /> 30�% of the 6-month 24-hour storm runoff volume from thc site. <br /> � • The stormtiltcr must trcat thc 6 month 24 hour storm. <br /> • The Stormliltcr cai�trid�es shall be desiened with a maximum Flow rate of I S gpm <br /> � per cartridgc, is SBUH or a comparable single-event hydrologic:d model is used <br /> � to generatc Ilo�vs. <br /> � • Th� stormfilter mcdia shall t.irgct dissolved pollutants and nutricnts, in addition to <br /> total suspcnded solids. <br /> � • The stormfilter must designed with a minimum of 2.3 fcet of head differcntial <br /> c betwecn the inverts of die inlet and outlet of the filter. Do���nstream hydraulic <br /> ; calculutions �+�crc performcd lo demonsu�atc that downstrcam conditions do not <br /> reducc thc hydraulic potential across the filter due to Uack�vater effects. They are <br /> aUached as Appendix B. <br /> i <br /> t 'I'able 1- Required Trcatment Volume <br /> System Area (ac) Runot'f Estimated Runoft' <br /> ' depth Volume (CF) <br /> ( (in) <br /> � Wetvault 1.483 0.89 4779 X 0.3= 1434 <br /> � '1':iUlc 2-Aclu:il '1'rcatment Volumc <br /> t <br /> � Actual Ia°�k Required Volume <br /> 5yslem Volume(CF) L1°���� (CF) <br /> � (ft) <br /> � Wetvault 1445 115 1434 <br /> Table 3- Slornililler 7'rcatment System <br /> l <br /> 6 Month Requircd Tiltcr <br /> ( Syslcm Treatment Vault Sizc Cartridges <br /> ( Flow Rate (�'O <br /> � (cts) <br /> i <br /> Stormtilter .267 6x12 8 <br /> i <br /> [ <br /> ( - -� - <br /> i <br /> r <br />