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Dcscription <br />The Stormwaler Management Stormt=iiterfl (StormFlller) Is a passive, flow-through, stormwater <br />lillralion system that Is installed Inline wlth storm drains, The syslem is comprised of one or more <br />vaults that house rechar{�eable, media-1111ed, fllter cartridges. The StormFiller works by passing <br />stormwalar through the media-filled cartridges, which trap parlic�lates and adsorb materials such as <br />dissolved metais and hydrocarhons. Or:ca fittered through ihe media, the treated stormwater is <br />directed to a callection pipQ or discharged inlo an open channel drainage way. <br />The StormFilter (s offered In four different configuratlpns: cast-In-piace, precast, linear, and catch <br />basin. The precasl, linear, and catch basin modeis ulllize pre-manu(aclured uNl� lo ease the design <br />and installatlon processes. The casl-in-��lace units are customized for larger flows and may ba either <br />covered or uncovered underground unils. <br />Purpose <br />Tho StormFiller is a passfve, flow-Utrough, stormWate� flitratlon system designed to improve �ne <br />quality of stormwate� runoff frofii Ihe urban envirvnment betore it enlers receivin� wateiways. It Is <br />Intended to function as a Bect Manayement PrecHce (BMP) to meet fedetal, state, and local <br />rer,uirements for treatiny runoff in complianr,e wlth the Clean Water Act. <br />Ttirnugh independont thirci party studles, ;t has been demonslrated that the StormFilter Is highly <br />effective tor lrealment of fiist flush Oows and for lreatment of Flow-paced flows during the latter pari of <br />a storm. In general, fhe Storm�ilter's effir.iency is highest when poliutant conr.entrations are hfghest, <br />The primary non-point sow•ce pollulants targeted for removal by the StormFilter are: sediments <br />(TSS), oil and grease, soluble metals, nnfrients, organics, and trash and debris. <br />Siztng <br />1-he StormFiller fs sized to lreat the pealc flow of a water qualily design stortn. The peak flow is <br />deterrnined irom calculations 6ased on the conUibuling watershod hydrology and from a design storm <br />rnagnitude set by Ihe local slormwaler rnanapernent agenr.y. The particular size of a StormFilter unft <br />is determi�ed by tlie numUer of filter cariridges (see Figure 1) ��equired to treat tt�is pealc (low. <br />The ilow rate lhrough each flller cartridpe is adjuslahle, allowing control over the amount of contact <br />qme between the influent and the filter media. The maximum flow rate through each cartridge can be <br />adjuslod to between 5 and 15 gpm using a calibraled restrictor dfsa at the base of each filter <br />cartr!dge. AdJusiments to the car(ritic�e ilow rde will affect lhe number of cartridges requlfed to ifeat <br />the peal< flow. <br />Basic Function <br />The StormFilter Is desf�ned to siphon stom�water runo(f throuc�h a filler cartridge c:ontaining media. A <br />variety of filtcr medla Is availa6le and can he customized for each site to target and rernave ihe <br />desired leuels of sedirnents, dissolved phasphorus, dissolved metals, organics, and oil and greasc. <br />In many cases, a combination uf inedia is recximmended to maximize lho e(Tecliveness of the <br />stormwater poilutant removat. <br />1' I100.54�.4667 F uoo,581.1271 w www.stormwaterinc,com <br />