E - Engineering Code Assessment.pdf

STORMWATER QUALITY AND PROTECTION OF RECEIVING WATERS


 Performance Outcomes               Acceptable Outcomes                   Response


PO7                                AO7.1                                  Complies – as above.
Water quality treatment            Water quality treatment systems
systems use natural processes      are designed to be integrated into
and materials, whenever            the landscape consistent with the
possible, and are integrated       technical design guideline
into development to enhance        published by Healthy Land and
biodiversity and landscape         Water by Design for the feature.
benefits.                          (eg. For Bioretention Basins:
                                   Bioretention Technical Design
                                   Guidelines (October 2014) and for
                                   Wetland Systems the Wetland
                                   Technical Design Guideline (May
                                   2017).
PO8                                AO8.1                                  Not applicable.
Water quality treatment            Detailed life cycle costing is
infrastructure to be dedicated     provided for the entire treatment      Alternative stormwater
as public assets are proven to     train system including replacement
                                                                          quality management
be suitable for its use and of a   costs of asset parts.
cost effective and efficient                                              outcomes are inherent in
standard.                          AO8.2                                  the design of the driveway
                                   Treatment systems dedicated as         and landscaping areas.
                                   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                                  Complies.
Treatment systems are              Free draining inlets and outlets are
designed to eliminate or           provided to ensure that waters do      Stormwater quality
minimise health, safety and        not pond for more than 24 hours.
                                                                          treatment outcomes do not
aesthetic hazards, including
risks associated with insect       AO9.2                                  pose a health threat.
breeding, odour and public         Developments are designed to
safety.                            eliminate retaining walls in excess
                                   of 0.8m for any water quality
                                   treatment device.