Appendix C - Stormwater Management Plan

31 October 2018


5.4.4 Maintenance

For the Stormwater 360 Enviropods and Stormfilters, maintenance can be performed with a vacuum
truck to remove captured soil, sediment and floatables. Detailed maintenance techniques can be found
in the Stormwater 360 Operations and Maintenance Manual attached in Appendix 4.


5.5       Construction Phase (Sediment and Erosion Control)

5.5.1 Intent of Erosion and Sediment Control Management Plan

To prevent stormwater contamination (of watercourses) and the release of contaminated stormwater
and wastewater by ensuring compliance with the Environmental Protection Act 1994 and
Environmental Protection (Water) Policy 2009.

5.5.2 Implementation Strategy

Establish control measures and best practice approaches to prevent stormwater contamination and
minimise the risk and adverse effects of erosion and sedimentation. All Erosion and Sediment Control
measures must be designed, constructed and maintained in a manner that is commensurate with the
site’s erosion risk.

5.5.3 Erosion and Sediment Control Measures

          Obtain a licence or approval to operate activities that are classed as environmental relevant
           activities (i.e. they have the potential to cause environmental harm).
          Implement and maintain appropriate control measures to prevent sediment leaden wastewater
           and other potential pollutants such as oil, paint and wet concrete from entering the stormwater
           system via stormwater drains and gullies. The control measures which must be considered to be
           adopted are:
                Limit site access during construction to minimise disruption to traffic
                Install a temporary construction entry/exit sediment trap at all site accesses to
                    minimise mud and sediment from the site being tracked onto public road, particularly
                    during wet weather or when the site is muddy.
                Install and maintain appropriate sediment fences around construction areas
                           Divert clean stormwater runoff, using catch drains, around construction areas
                               to existing or new stormwater drainage system.
                           Install sandbags and other pollution containment devices around stormwater
                               drains and any other locations where required to prevent sediment entering
                               the trunk stormwater system.
                           Cover open earth/soil areas progressively (with concrete slabs and pavements
                               or mulch) to minimise areas of bare earth/soil.
                           Any stockpiles of excavated soil and demolition / construction waste must be
                               located where risk of erosion and sediment is minimal, and must be protected
                               from wind and water erosion.
                Implement and maintain appropriate control measures such as catch drains and
                    sediment fences to prevent ponding of stormwater or discharge of stormwater from
                    the site to adjacent properties.
                Provision of spill / pollution control equipment that is readily accessible to clean up
                    spills and leaks.



Excellence with Economy in Engineering                                                                        15
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