Appendix C - Stormwater Management Plan

Emergency procedures

Spills and blockages can have an immediate impact on          4.2 Blockages
the performance of a stormwater management system,
and can potentially result in serious damage to built         In the unlikely event of surface flooding around a gully pit
infrastructure as well as the surrounding waterways           fitted with an EnviroPod the following steps should be
                                                              carried out:
and wetlands.
                                                               1   Check EnviroPod overflow bypass. The EnviroPod filter
                                                                   has been designed with an overflow mechanism built
In these types of emergencies, it is important to act
                                                                   into the filter box. If surface flooding still exists, check
quickly to remediate the problem by removing affected              the overflow slots underneath the rubber seal. If debris
sediment or clearing the cause of the blockage, so                 is lodged in the overflow slots it can be easily cleared by
that the system can resume normal and effective                    hand or a steel rod.
functioning as soon as possible.                               2   If overflow is clear and surface flooding still exists remove
                                                                   EnviroPod and check outlet pipe for blockages.

                                                                   Removal of the EnviroPod may be difficult if the filter is
4.1 Spill procedures                                           3
                                                                   clogged and the EnviroPod is holding water. If the filter
                                                                   is clogged, brush the sidewalls of the filter with a yard
In the event of a spill discharging into any gully pit, all        broom or similar. This will dislodge particles trapped
sediment is to be extracted and the filter bags are to             at the interface allowing contained water to flow
be removed and replaced with rejuvenated filter bags.              through the filter.
Normal operation procedures apply to additional cleaning
as a result of spills.                                         4   If the outlet pipe is blocked, it is likely that a gully
                                                                   sucker truck will be required to unblock it. Debris
                                                                   should be removed from the EnviroPod with the gully
                                                                   sucker truck before removal of the EnviroPod filter. If
                                                                   a gully sucker truck is not available and the EnviroPod
                                                                   needs to be removed by hand, follow the steps below:
                                                               a   Remove excess debris by hand or brush the side
                                                                   of the filter.

                                                               b   Lift and place filter ring through the filter box and
                                                                   into cage.

                                                               c   Remove Filter box.

                                                               d   Lift cage containing filter bag and ring out of the pit.

                                                               e   Unblock outlet pipe.




16   Stormwater360 Operations and maintenance