Welcome
Hello everyone
and welcome to the March edition of “Keep Things Flowing”, the
monthly newsletter presented by Storm Water Consulting.
In this month’s
newsletter we bring you some news from the water quality sector and
we take a very brief look at the effects of Cyclone Debbie.
Jellyfish Moves to
Stormwater 360
Over the
past 12 months the stormwater quality sector has had a real shake
up, with new water quality treatment products coming into the
market place and going through various Council’s rigorous approval
processes.
Previously
there were three main providers offering tertiary stormwater
treatment products. These were:
·
Stormwater
360 – StormFilter
·
SPEL
– SPELFilter
·
HUMES
– Jellyfish
Property developments
that triggered the State Planning Policy or local Council’s policies
to meet water quality objectives were required to utilise either a
traditional bio-retention basin or one of the products listed
above. Earlier this month we were notified that Stormwater 360 had
become the exclusive Australian license holder for the Jellyfish. This
is major news in that one company holds exclusive licenses for two
tertiary treatment devices.
For those of
you who do not know how a Jellyfish device works, we have
summarised the concept below.
The
Jellyfish system works by discharging polluted stormwater into the
bottom of the system and forcing the stormwater up through
membranes, filtering runoff and removing key pollutants. The
Jellyfish device is located underground with access through a
manhole. The Jellyfish device is capable of achieving water quality
objectives without the need for pre-treatment of runoff. The
Jellyfish filter device is pictured below.
If your
development requires water quality treatment we would be pleased to
provide you with assistance in designing a treatment train for your
site. When designing a treatment train we look at the most
practical and economical stormwater treatment option for the site.
Cyclone Debbie
Earlier this
week Cyclone Debbie made landfall in and around Bowen, North
Queensland. Along with the destructive winds and heavy rainfall
brought about by the cyclone, Bowen and many other areas
experienced significant storm-tide inundation.
Storm-tide
flooding is the inundation of dry land from a rise in sea levels or
tidal event. Storm-tide inundation usually occurs in severe weather
events such as cyclones. As hydraulic engineers we do account for
storm-tide flooding when undertaking the design of a development. Councils
in South East Queensland have undertaken coastal flood modelling and
provide storm tide flood levels for all properties affected by
storm-tide flooding (up to a 1 in 100yr ARI event).
Cyclones
trigger evacuation procedures for areas expected to be impacted by
the cyclone. A stormwater emergency management plan is required for
developments that are significantly impacted by storm-tide
inundation or if the access road is significantly impacted by
storm-tide inundation. A stormwater emergency management plan
describes procedures to follow before, during and after a
storm-tide (or other) flood event. The stormwater emergency
management plan also provides details about emergency services,
access to storm information, evacuation routes and flood level
information.
If you are
proposed to develop in an area known to be affected by storm-tide
or other types of flooding you may be required to provide a
stormwater emergency management plan. We are able to assist with
the preparation of such plans. Please contact us to find out how we
can assist.
Wrap Up
We hope you
enjoyed this edition of Keep Things Flowing. Feedback on articles
presented is always welcomed and for further information on any of
the articles presented please don’t hesitate to contact our office.
As always,
Keep Things Flowing!
The Storm
Team
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