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Types of Nlaintonancm <br />Presently, procedures liave been developed for two levels of maintenanco: InspectloNm�nor <br />main(enance and major maintenance. Inspecliun/minor n�aintenance aclivflies are combined since <br />minor maintenance does not require specia! equipment and rypicaliy Illtle or no materials Are in need <br />of disposal. Inspection/minor maintenance typiplly lnvolves Insper.tlon of the vault itself and removal <br />of vegetalion and debrls. Major malntenance typically fncludes cartrid,7e recharging. Major <br />maEntenance may involve disposal of materia!s that require consideration of re�uialory guidolines. <br />Dependin� on Ihe particular unit confi;�urailon and equipment used, major mainlenance may requifo <br />an understandinc� of OSHA rules. Table �I summarizes 1he primary ��tiviqes associated with <br />StormFiller maintenance. <br />Tablo 1. Prlma,y StormFfito�� maintonancu qctivitles <br />Activl • -.._... ""°'•" •"""' r�peclocl FaclUly <br />b' Reuuldnp Malntonanw AcUvlty PorTortnonco Afler <br />— Malntonance I9 Re ulmd Malntnlnin <br />Min�r Trash and dobilc SlormFiller carUidg6s FloBlabie obJecte orolher Unslphly Aebrts is <br />remov2l nnd conlainmonl trash Is presertt in Ihe a <br />EtrucWre fllter. ftemnvo to ��vald tmm swrm�syntam.��� <br />��mdranco of filUetlnn ond Fillration is not hindered <br />eliminale unsightly dobrts hy poatable obJecls, <br />�nd tr2gh, <br />Major Ca�ttidge SlomiFilter oorlridc�es <br />roplacomant ond and coniainment <br />sediment removal sltvclure <br />Malntenance Activit,y Timing <br />Carfiidges ars ocr.ludod <br />wilh Sedimonl; heavy <br />unifortn sedimeht is v(sfbla <br />an rahridpe lops, <br />RofrasheA mAddpas am <br />e6lo Io ofCeclivnlyfreet <br />stoimwuler, <br />Two scheduled fnspections/mainlenance �ctivlQes should take place during Ihe year. Firct, nn <br />inspection/minor maintenance aclivity should be done. During Ihe minor maintenanc� activily (routlne <br />inspoclion, debrls removai), the nee� for major mainlenanco shouid 6e determined and, )f disposal <br />during major maintenance will be rcyuired, samples: of the sediments and media should be o6tained. <br />Second, if requited, a ntajor maintenance acllvity (rep�apement of ll�e filler cartridc�es and associated <br />sedimenl removal) should be pertormed. <br />In acidition to lhese two scheduled aclivilies, it Is important to check the condilion of the StarmFlter <br />unit a(ter major slorms for damage caused by high flows and for higli sodiment accumulation that <br />may bo caused by localized eroslon in the drainago area. It may 6e necessary to edjust tho <br />maintenance aclivity sched�tle dependfnc� on the actual operating conditions oncountered by the <br />system. <br />In general, minor maintenance acllvilies wfll ocr.ur late fn the rainy season, and major maintenance <br />wlil occur In late summer lo early fall when ilows fnto the syslem are not I;kely to be present. <br />The months indicated in Table 2 helnw ;how the recommended limes of year fnr maintenance <br />aclivilies t� occur fn lhe Padfic Northwest. <br />T 800.54F3.��s� F 800.561.Iz71 w www,stormwaterinc.com <br />4 �� �� ' <br />