Stormwater Management Plan - Rev 1

CHAPTER
                                 MAINTENANCE
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The SPELFilter system requires periodic maintenance to continue operating at the design efficiency. The
maintenance process comprises the removal and replacement of each SPELFilter cartridge and the cleaning of the
vault or manhole with a vacuum truck. SPELFilter maintenance should be performed by a SPEL Environmental
certified maintenance contractor.

The maintenance cycle of the SPELFilter system will be driven mostly by the actual solids load on the filter. The
system should be periodically monitored to be certain it is operating correctly. Since stormwater solids loads can be
variable, it is possible that the maintenance cycle could be more or less than the projected
duration.

The SPELFilter systems in New Development applications are designed to treat the WQv in 24 hours initially. Later
in the cycle these cartridges will flow at a slower rate, and when the WQv does not drain down within +/- 40 hours
after the storm event, the system must be maintained.

When a SPELFilter system is first installed, it is recommended that it be inspected every six (6) months. When the
filter system exhibits flows below design levels the system should be maintained. Filter cartridge replacement should
also be considered when sediment levels are at or above the level of the 4 inch manifold system. Please contact
SPEL Environmental for maintenance cycle estimations or assistance at 13 SPEL.




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