Decision Notice - Approved by Delegation of Authority OPW26 0100 (As Published)

               21.    Works associated with this permit must not adversely impact on the existing drainage
                      conditions on other properties (e.g. by blocking or interfering with natural overland flows).
               22.    Construction of all internal stormwater drainage works must comply with the relevant
                      section/s of Australian Standard AS/NZS 3500.3.
                      Erosion and Sediment Control
               23.    Prescribed Water Contaminants (as defined in Schedule 10 of Environmental Protection
                      Regulation 2019) must not be released from the site or to waters within the site, or be likely
                      to be released should rainfall occur, unless all reasonable and practicable measures are
                      taken to prevent or minimise the release and concentration of contamination.
               24.    At the time of the prestart meeting, all erosion and sediment controls must be in place in
                      accordance with an erosion and sediment control plan prepared by a suitably qualified person
                      (RPEQ or CPESC). If such measures are not in place or are not satisfactory, “on the spot”
                      fines may be issued. Such fines can be issued if sediments from the site are found to enter
                      or have the potential to enter Council’s stormwater system, natural waterways, any
                      downstream stormwater filtration system or adversely impacting on other properties.
                      The sediment and erosion control design and measures have NOT been approved, it is the
                      site's Supervising Engineer who is responsible for ensuring that the sediment and erosion
                      control measures have:
                      a.      Been duly designed by an RPEQ or CPESC and constructed in accordance with "best
                              practise" methods;
                      b.      Been revised by an RPEQ or CPESC to address the issues raised by changes in the
                              projected construction schedule and/or methods;
                      c.      Been revised to address predicted rainfall events; and
                      d.      Achieve the desired environmental outcomes.
                      Council may request further controls to be installed should the implemented measures be
                      found inefficient.
               25.    The erosion and sediment control measures must be designed, installed and maintained in
                      accordance with the supervising engineer’s instructions and the current best practice
                      standards. A copy of the latest erosion and sediment control plan, prepared and endorsed
                      by a suitably qualified person (RPEQ/CPESC), must be made available to Council within 5
                      business of request.
                      (*) Refer to Advisory Note
               26.    All erosion and sediment controls must be inspected to ensure the controls are not being
                      bypassed. Inspections must occur and be electronically recorded:
                      a.      at least daily (when work is occurring on site) or weekly (when work is not occurring on
                              site); or
                      b.      within 24 hours of expected rain; or
                      c.      within 18 hours of a rainfall event (i.e. an event of sufficient intensity and duration to
                              mobilise sediment on site).
               27.    Earthworks and the implementation of erosion and sediment controls are undertaken in ways
                      which ensure flooding characteristics (including stormwater quantity characteristics) external
                      to the development site are not worsened during construction for all events up to and
                      including the 1% AEP (1 in 100 year ARI) event.
               28.    The developer must ensure non-essential exposure of soil is prevented by restricting the
                      extent of disturbance and minimising the duration of soil exposure to adverse weather
                      conditions and effectively turf, cover or stabilise any disturbed area without delay and prior
                      to rainfall occurring.




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Document Set ID: 25013511
Version: 3, Version Date: 28/07/2026