Engineering Code Assessment Report

THE STATE PLANNING POLICY                OR
INTERACTIVE MAPPING SYSTEM.
                                         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                                                               The Development will
Water quality treatment systems use      Water quality treatment systems are designed to be integrated       Comply
natural processes and materials,         into the landscape consistent with the technical design guideline
whenever possible, and are integrated    published by Healthy Land and Water Water by Design for the
into development to enhance              feature. (eG. FOR BIORETENTION BASINS:
biodiversity and landscape benefits.     BIORETENTION TECHNICAL DESIGN GUIDELINES
                                         (OCTOBER 2014) AND FOR Wetland SYSTEMS
                                         THE Wetland TECHNICAL DESIGN GUIDELINE (MAY 2017).

PO8                                      AO8.1                                                               The Development will
Water quality treatment                  Detailed life cycle costing is provided for the entire treatment    Comply
infrastructure to be dedicated as        train system including replacement costs of asset parts.
public assets are proven to be
suitable for its use and of a cost       AO8.2 Treatment systems dedicated as public assets are
                                         designed to minimise maintenance, renewal and adaption costs
effective and efficient standard.        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                                                               The Development will
Treatment systems are designed to        Free draining inlets and outlets are provided to ensure that        Comply
eliminate or minimise health, safety     waters do not pond for more than 24 hours.
and aesthetic hazards, including risks
associated with insect breeding, odour   AO9.2
and public safety.                       Developments are designed to eliminate retaining walls in
                                         excess of 0.8m for any water quality treatment device.
Hydrology
PO10                                                                                                         The Development will
Development prevents increased bed       AO10                                                                Comply
and bank erosion and sedimentation in    The development is designed to:
receiving waterways by avoiding                   1. limit the peak 1 year ARI event discharge within
changes in low rate, peak flow run-off               the receiving waterway to the pre-development
and flow duration.                                   peak 1 year discharge;
                                                  2. maximise pervious areas by using pervious
                                                     alternatives for otherwise impervious areas
                                                     wherever possible;
                                                  3. provide for capture and reuse of stormwater for
                                                     non-potable purposes for gardening, toilet
                                                     flushing, laundry and hot water supply uses;
                                                  4. incorporate appropriate detention features; and
                                                  5. incorporate natural channel design principles

                                         EDITOR’S NOTE: THE Sustainable Building Design
                                         Code INCLUDES REQUIREMENTS FOR STORMWATER
                                         CAPTURE AND REUSE.
PO11                                     AO11.1                                                              The Development will
Water sensitive urban design             The design and construction of a natural channel or natural         Comply
principles are applied to achieve        channel rehabilitation works are in accordance with the Natural
multifunctional design of waterways,     Channel Design Guidelines (Brisbane City Council) having
                                         regard to local topography, geology and geomorphology.



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