planning report Other Change

                                         achieve at least 80% reduction in
                                         total suspended solids, 60%
                                         reduction in total phosphorous, 45%
                                         reduction in total nitrogen and 90%
                                         reduction in gross pollutants >5mm).




                                         OR




                                         AO6.3
                                         Developments achieve a minimum 3
                                         drop rating consistent with the Water
                                         by Design Living Waterways Scoring
                                         Guide (Healthy Land and Water).




                                         Editor’s note— PSP6 Engineering
                                         Design Standards - Roads, Drainage
                                         and Earthworks provides guidance
                                         on stormwater design and modelling
                                         requirements.
PO7                                      AO7.1
Water quality treatment systems use      Water quality treatment systems are
natural processes and materials,         designed to be integrated into the
whenever possible, and are               landscape consistent with the
integrated into development to           technical design guideline published
enhance biodiversity and landscape       by Healthy Land and Water Water by
benefits.                                Design for the feature. (eg. For
                                         Bioretention Basins: Bioretention
                                         Technical Design Guidelines
                                         (October 2014) and for Wetland
                                         Systems the Wetland Technical
                                         Design Guideline (May 2017).

PO8                                      AO8.1
Water quality treatment infrastructure   Detailed life cycle costing is provided
to be dedicated as public assets are     for the entire treatment train system
proven to be suitable for its use and    including replacement costs of asset
of a cost effective and efficient        parts.
standard.



                                         AO8.2 Treatment systems dedicated
                                         as public assets are designed to
                                         minimise maintenance, renewal and
                                         adaption costs and the requirement
                                         for specialised equipment, material or
                                         maintenance techniques.




                                         AO8.3
                                          Vegetated stormwater management
                                         systems to be dedicated as public
                                         assets are established and
                                         maintained during the maintenance
                                         period to ensure optimal vegetated
                                         growth and that the functional
                                         elements of the system achieve the
                                         design function at the end of the
                                         maintenance period.
PO9                                      AO9.1
Treatment systems are designed to
eliminate or minimise health, safety
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