Development Application part 7 of 10 Stormwater Management Report - MCU13/0092

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6.     Maintenance

The following maintenance protocols detailed in Section 6 have been adapted from Maintenance manuals supplied
by the manufactures. They should generally be adopted as standard maintenance procedures upon construction of
EnviroPods, Stormfilters and Rainwater Tanks.


6.1 Enviropods


Maintenance is to be carried out as outlined in the Stormwater360 Stormfilter/ Enviropod SFEP Treatment Train
Operations and Maintenance. Refer Appendix E


6.2 Stormfilter System


Maintenance is to be carried out as outlined in the Stormwater360 Stormfilter/ Enviropod SFEP Treatment Train
Operations and Maintenance. Refer Appendix E

6.3 Rainwater Tanks


Proper maintenance of the tank, catchment system, roof, gutters and inlet is essential to ensure a safe supply of
water and is best carried out before seasons when heavy rain is expected. Roof catchments and gutters should be
inspected and cleared of leaves and other debris every three or four months. Overhanging branches should also be
removed where possible. If overhead wires are too close for safety, contact your local power authority for advice. All
screens should be cleaned regularly. Tanks should not be allowed to become breeding sites for mosquitoes. If

mosquitoes are detected in a tank the entry point should be located and closed.

Desludging: Tanks should be examined for accumulation of sludge at lease every 2-3 years. If sludge is present in
the tank it should be removed by siphon or by complete emptying of the tank (desludging).Tanks with a ’cone scour’
base are easy to clean by simply opening the cleaning outlet to allow the water to gush out with the sludge then
rinsed with a hose. Small, flat bottomed tanks can be drained, rinsed with a hose and titled to drain. One method of
cleaning big flat-bottomed tanks is to get inside with a bucket, shovel and broom and dig out the sludge. A second
person should be present to ensure the safety of the person inside the tank. Clean a big tank early in the morning or
when the area is shaded to avoid heat exhaustion. For light inside the tank, use a battery lantern not a flame or
electric extension. If chemicals are being used for repairs inside, a respirator may be necessary. Professional tank
cleaners are available in some areas. A concrete tank could crack if it dries out. Check with the tank supplier to find
out if the type you have can safely remain empty for a few weeks. It might be necessary to put water in the tank to
stop it from cracking. Plastic tanks will need some water or should be tied down to stop them from blowing over in
strong winds when they are emptied. If the tank is your only source of water, it can still be desludged regularly by
siphoning the sludge off. If the sediment has been stirred up, the water can be treated chemically with chlorine and/
or boiled before consumption.




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