6617 ASSOCIATED BLVD BASE FILE 2018-01-02 MF Import

Basic Function the entire filter cartridge is used to filte� The StormFilter is designed to siphon Water throughout the duration of the storm, stormwater runoff through a filter cartridge regardless of the water surface elevation in containing media. A variety of(ilter media is the unit. This siphon continues until the available and can be customized for each Water suAace etevation drops to the site to target and remove the desired levels elevation of the hood's scrubbing oi sediments, dissolv�d phosphorus, regulators. dissolved metals, organ�cs, and o�i and Tho cartridges are connected to the under- grease. In many cases, a combination o, drain manifold with a plastic connector. media is recomrnended to maximize the Since some madia used is potentially effectiveness of the stormwater potlutant buoyant, a threaded connector affixed to lhe removal. under-drain manifold (with glue or other , : . adhesive) is necessary to ensure that the - cariridge isn't lifted out of place. For the heavier compost media, a slip connector is '' used. i� ` _ The StormFilter is also equipped with (low ,_,. , . spreaders that trap floating debris and ` suAace films, even dun.ng ove�low " ' ` t�.- ` " conditions. Depending on individual site _ � .��:.,-,:J.,.. �� characteristics, some systems are equipped with high an�/or base flow bypasses. High flow bypasses are installed when the calculated peak storm event generates a tlow that overcomes the overflow capacity of Figure 1. The StormFilter Cartridge the system. This is especially important for precast systems. Base flow bypasses are sometimes inslalled to bypass continuous Priming System Function inilows caused by ground water seepage, When stormwater in the StormFilter unit which usually do not require treatment. All enters a StormFilter cartridge, it percolates StormFilter units are designed with an horizontally through the cariridge's filter oveAlow. The overflow operates when the media and r,ollects in the center tube of the inflow rate is greater than the treatment cariridye, where the float in the cariridge is capacity of the filter cartridges. in a closed (downward) position. Water continues to pass through the filter media and into the cartridge's center tube. The air in the cartridge is displaced by the water and purged from beneath the tilter hood through the one•way check valve located in the cap. Once the center tube is filled with water (approximately 18 inches deep), there is enough buoyant torce on the Ooat to open the float valve and allow the treated water in the center tube to flow into ihe under-drain manifold. This causes the check valve to close, initiating a siphon that draws polluted water throughout the full suAace area and volume of the filter. Thus, ?OOF C.�N71 Gi tilormwator;oluLnni Toll-Iree BOP 14tl a667 2 01 B .....�r.��I.,.••�+.d'�'i.��•� A'Jdit l II';v,�1 I i^��ar Sb'mr�ppr i;�or�Lor an0 hlainlen.ln�e Gm4rtune5