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1Li�u/'1�u3 1b:�U 42577�0409 <br />:�• n <br />Types of Maintananco <br />THE 1•1CFiAUGFITON GROUP <br />PAGE 06 <br />Presently, procedures have been developed for two leve!s of maintonanco: InspectioNminor <br />mainlenance and major maintenance. Inspection/minor mainlenance aclivilies are c,�mbined since <br />minor maintenance does not reyuire special equipment and typicaily Ilttle or no materials are in nced <br />of disp�sal, inspection/miror maintenance typically involves inspeclion of the vault itself and removal <br />of vegeta(ion and debris. MaJor maintenan�e typically fncludes cartrfdc�e recharging. Major <br />maintenance may involve disposal of materials that require consideration of regutatory guidelines, <br />Depending on ihe particular unit configuraiion and equipment useu, major mainlenance may reqUire <br />an underslanding of OSHA rules. Table 7 summarizes the piimary activities associaled with <br />StormFilter maintenance. <br />TaUIQ 1. Prlmary SlortnFfitor maintonnnce qcllvi[les <br />Activlty <br />MalnlonancoActivity Porformnncalliler <br />Minor - �.�..���,.������� <br />Trash and dobds StonnFiller caAridgps Floalable o6jacls or olher Unslghly debds is <br />rnmoval and conlainmont lresh Is presenl in Ilie permanenlly ramoved <br />sUucWre filter. Removo to avold irom slonn systom, <br />hindrance of fillraUon enA Fiilration is not hindered <br />ellmin?:9 unsightly dabds hy Ilaala6lo obJects. <br />and trash, <br />Major Caitiidge SlonnFilter codridgos Carttidges ere occludad Rofroshed ct�Aildgps am <br />rep�acument and and containment wilh sedimonl; heavy e610 lo oflecUvaly troot <br />seJimont removal slrucWrc unifonn sodiment is visible slurmwelcr. <br />on ceitridge lops, <br />Mafntenance Activity Tirning <br />Two scheduled inspectionshnainlenance� aativllles should take place during lhe year. First, an <br />inspectionhninor maintenance activity should be done. During the minor mainlenance activiry (rout(ne <br />inapeclion, ciebris re�novap, ihe need (or major maintenanco should be determined and, i( disposal <br />during major maintenance will be required, samples of the sediments and rr�adia should bo o6tained. <br />Second, if re�uired, a major maintenance aclivily (replacement of Ihe filler cartridges and associated <br />sediment removal) sho��ld be performed. <br />In addilion to these two scheduled ac(ivilies, it is important to check the condilfon of ttie S(oimfilter <br />unit after major storms for damage caused by hlgh flows and for hiyh sadiment accumulation that <br />may bo caused by localized erosion in iho drainago area. It may be necessary to adjust tho <br />maintenance aclivily schedule dependiny on the aoWal operating conditions oncounlered by the <br />sy,tem. <br />In general, minor maintenance activilles will occur late in the rainy season, and major mainlenance <br />wlll occur (n late sununer to early fall when flows Into the system are nol likely to be present. <br />The monlhs indicated in Table 2 below show the recommended limes of year for mainlenance <br />activilies io occur fn ihe Pacific Northwest. <br />��:� <br />T 8o0.54S.46G7 F 40a.5&I.iZ71 W www.stormwaterinc.com <br />