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CHCC WV:' <br /> HOCO W:el tt <br /> i.i.• iICN.: <br /> rut:Noma .}:; ' /,, <br /> •+l loot. <br /> CFN:ER 10111 �� t ?': cxntR:s,nla <br /> tj,t�'r • <br /> y sr nual MEpu. <br /> HON , 71R -� _ <br /> •f7_ ter` �. <br /> 1Y. i ,: INNER ML511 <br /> `4 " <br /> • <br /> .yy •`�. <br /> uHUER•pwN ruMrao •� <br /> • <br /> INOERDRAN MINRUW_: . . MW rtoml: <br /> MST INTO,uWU MOP <br /> FK7ENEO WNER <br /> Figure 1.The StormFilter Cartridge <br /> Priming System Function <br /> When stormwater in the StormFilter unit enters a StormFilter cartridge, it percolates horizontally <br /> through the cartridge's filter media and collects in the center tube of the cartridge, where the float in <br /> the cartridge is in a closed (downward) position. <br /> Water continues to pass through the filter media and into the cartridge's center tube. The air in the <br /> cartridge is displaced by the water and purged from beneath the filter hood through the one-way <br /> check valve located in the cap. Once the center tube is filled with water(approximately 18 inches <br /> deep),there is enough buoyant force on the float to open the float valve and allow the treated water in <br /> the center tube to flow into the under-drain manifold. This causes the check valve to close, initiating a <br /> siphon that draws polluted water throughout the full surface area and volume of the filter. Thus,the <br /> entire filter cartridge is used to filter water throughout the duration of the storm, regardless of the <br /> • water surface elevation in the unit This siphon continues until the water surface elevation drops to <br /> the elevation of the hood's scrubbing regulators. <br /> The cartridges are connected to the under-drain manifold With a plastic connector. Since some media <br /> used is potentially buoyant, a threaded connector affixed to the under-drain manifold (with glue or <br /> other adhesive) is necessary to ensure that the cartridge isn't lifted out of place. For the heavier. <br /> compost media, a slip connector is used. <br /> The StormFilter is also equipped with flow spreaders that trap floating debris and surface films, even <br /> during overflow conditions. Depending on individual site characteristics, some systems are equipped <br /> with high and/or base flow bypasses. High flow bypasses are installed when the calculated peak <br /> storm event generates a flow that overcomes the overflow capacity of the system. This is especially <br />