MCU16/0012 Attach B Engineering report & SMP

The primary factor controlling timing of maintenance for the StormFilter is sedimentation. A properly
functioning system will remove solids from water by trapping these particulates within the porous structure of
the media. The flow through the system will naturally decrease as more and more solids are trapped.
Eventually the flow through a system will be low enough to require replacement of the cartridges. Sediment
should be removed from upstream trapping devices on an as needed basis to prevent material from being re-
suspended and discharged to the system.


Site conditions greatly influence maintenance requirements. StormFilter units located in areas with erosion or
active construction should be inspected and maintained more often than those in fully established areas. The
maintenance frequency may be adjusted as additional monitoring information becomes available during the
inspection program. Areas that develop known problems should be inspected more frequently than areas that
demonstrate no problems, particularly after large storms. Ultimately, inspection and maintenance activities
should be scheduled based on the historic records and characteristics of an individual filter.




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