and welcome to the September edition of “Keep Things Flowing”, the
monthly newsletter presented by Storm Water Consulting.
In this month’s
newsletter we bid farewell to one of the Storm team members, we
answer another frequently asked question and we take a closer look
at a Tree Pit stormwater quality improvement device.
ever called the Storm office you’ve probably heard the friendly
greeting “Hello, Storm Water Consulting, Alice Speaking”.
Unfortunately those words will not be heard after today as this is
Alice’s final day at Storm. Over the past 7 years Alice has been an
integral part of the Storm team and we wish her all the best on her
Frequently Asked Question
detention is a method of detaining stormwater runoff so that an
adverse impact is not created on downstream properties. An adverse
impact could consist of increased peak discharges, increased flood
levels, increased scour and erosion, damage to property or
increased flood hazard. Typically stormwater detention is provided
in the form of a detention basin or a below ground detention tank.
of a property often results in an increase in impervious site area,
which creates additional runoff and increases the peak discharge
from the site. On-site detention may be required if the downstream
stormwater network does not have capacity to convey the increased
peak flows. When developing a property it is imperative to
understand the impacts that could be created downstream of the site
and the potential civil matters that could arise if not addressed
adequately. If you would like advice about a particular development
please contact our office and we would be pleased to provide
month the Storm team attended a product information session
presented by Ecosol representative Stephen Duncan. One of the
products that Stephen spoke about was Ecosol’s Tree Pit. Figure 1.0
below shows what a Tree Pit looks like.
Figure 1.0 – Tree Pit
Tree Pit is effectively a bio-retention basin in a box. Polluted
stormwater runoff enters the Tree Pit through a grate at the
surface and filters through filter media, removing key pollutants,
before discharging through drainage pipes at the bottom of the
system. A tree is planted in the filter media to assist with the
removal of key pollutants. A sectional view of the Tree Pit is
Figure 2.0 – Tree Pit Section
Tree Pit is useful for treating runoff from roads and carpark areas
as the system can be incorporated into the footpath or verge
design. Each Tree Pit is not designed to treat a significant
catchment however they do remove phosphorous and nitrogen from
runoff which is a significant benefit when a tertiary
(cartridge-filter based) stormwater treatment device is otherwise
you require any more information on the Tree Pit or other water
quality treatment devices please contact our office.
We hope you
enjoyed this month’s edition of Keep Things Flowing.
Keep Things Flowing!