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Minor Change Existing Approval MCU25 0057 01, OPW25 0078 01 & RAL25 0010 01 [As Published]
Earthworks and Retaining Walls
24. All earthworks shall be undertaken in accordance with the provisions of AS 3798 Guidelines
on Earthworks for Commercial and Residential Development, with geotechnical testing
undertaken in accordance with Section 8 of the Standard, and to a minimum of ‘Level 1’ as
defined in Appendix B. Test results as required by AS 3798, and a certificate of quality and
uniformity of fill shall be provided by a RPEQ and submitted to Council prior to Council signing
the Plan of Survey.
25. All earthworks and associated batters/retaining structures, both above and below ground
level, both temporary and permanent, must be contained entirely within the subject site
unless written permission from the respective landowner(s) is provided to Council.
26. Fall protection must be provided to retaining walls that are over 1m high.
27. Slope and batters are a maximum grade of:
a. 1 in 6 where in proximity to waterbodies
b. 1 in 4 for grassed areas.
c. 1 in 3 for planted areas.
d. 1 in 2 for combined structural engineering and planting solutions.
Stormwater Drainage
28. Appropriate scour protection must be provided at the outlet of all stormwater pipes including
temporary outlets.
29. 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).
30. Construction of all internal stormwater drainage works must comply with the relevant
section/s of Australian Standard AS/NZS 3500.3.
31. Prior to the completion of the development, all site surfaces must be effectively stabilised
using methods which have achieved effective short-term stabilisation and which will continue
to achieve effective stabilisation in the medium- to long-term (refer to E&SC Advisory Notes).
For the purpose of this condition, an effectively stabilised surface is defined as one that does
not, or is not likely to result in visible evidence of soil loss caused by sheet, rill or gully erosion
or lead to sedimentation, or lead to water contamination.
Erosion and Sediment Control
32. 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.
33. Sediment and erosion control measures must be in place prior to works commencing. 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.
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Document Set ID: 25050577
Version: 5, Version Date: 12/08/2026
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