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2 j {.r a ,. e • FloGard'D Perk Filter System 0 & M Manual <br /> FloGarde Perk Filter Systems- Radial Media Filtration <br /> Description i Basic Function <br /> The Perk Filter is a stormwater filtration device used to reduce pollutant loading in runoff from urban <br /> developments. Impervious surfaces and other urban and suburban landscapes generate a variety of <br /> contaminants that can enter stormwater, polluting downstream receiving waters The Perk Filter captures <br /> and retains sediment, oils, metals and other target constituents close to the source and reduces the total <br /> discharge load. <br /> The Perk Filter cartridge is manufactured from durable polymeric components with a <br /> polymer-coated steel support screen and stainless steel hardware. Its base construction <br /> allows use with a wide variety of media chosen to address site-specific pollutants of concern <br /> Perk Filters may be installed as a retrofit to suitable existing curb inlet, drop inlet, or combination catch <br /> basins, as an integral part of a coated steel-or concrete-housed stormwater inlet system for commercial, <br /> residential, and industrial developments,or as centralized modular treatment system installed either on- <br /> line or off-line. <br /> Prefiltration <br /> Systems constructed with a catch basin inlet are equipped with a FloGard®Plus Catch Basin Insert for <br /> pre-filtration.This insert captures gross pollutants such as trash, debris, hydrocarbons, and large <br /> sediment particles <br /> Gravity Separation <br /> Some Perk Filter systems have an inlet bay wherein the initial stormwater flows are received. This is <br /> separated from the main treatment chamber by a baffle wall with weir assembly Medium size sediment <br /> particles are retained in the inlet bay A drain down assembly to eliminate standing water from the inlet <br /> bay area between storm events is included in standard configurations. <br /> Media Filtration <br /> Once the stormwater enters the treatment chamber, it will pass through the filtration cartridges containing <br /> the project-specified filter media as the water level rises in the chamber. Very fine pollutant particulates <br /> will be retained in the filter cartridges as the water flows through the media to an interior perforated pipe, <br /> dropping the treated stormwater into an outlet chamber below a false floor <br /> Peak Flow Bypass <br /> Perk Filter systems are designed with a peak flow bypass to ensure the system will not back up and <br /> cause upstream flooding during extraordinary storm events.The bypass weir is an integral part of the <br /> baffle wall assembly in the inlet bay and allows peak flow stormwater directly to the outlet chamber. <br /> Fyesirc;4'T1 , ` " Y P.'l RAP' ,gyp <br /> y Sa- Hf1llI sfflifltt L r'.r�t <br /> sar[res } <br /> ' <br /> ., g p- r - i i'frrr <br /> ' SYIFiStISt% .' a <br /> KriStar Enterprises,Inc <br /> 360 Sutton Place <br /> Santa Rosa.CA 95447 <br /> 0001579-8819 <br /> www.itristat.cOm <br /> Page 17 of 19 <br />