B - Code Compliance.pdf

Water Quality and Drainage Code

                                                                  current International Erosion Control Association Best
                                                                  Practice Book Series.
Stormwater Quality and Protection of Receiving Waters
PO6                                                 AO6.1                                                                              AO6.1 to AO6.3 – Not Applicable
Development is located, designed, constructed and Stormwater runoff discharging into High Ecological Value                             The proposed change of use from a Multiple Dwelling
operated to protect and enhance environmental waters as a result of development causes no increase in                                  unit to a Short Term Accommodation unit involves no
values and water quality of waterways, wetlands, gross pollutants, total suspended solids, total                                       physical works or alterations, leaving existing
lakes, ground waters and drainage systems.          phosphorous or total nitrogen compared to a pre-                                   stormwater systems and unchanged, ensuring
                                                    development scenario.                                                              receiving waters are protected.
Editor’s note: Environmental values of waters and water quality
objectives are prescribed in Schedule 1 of the Environmental      AND
Protection (Water) Policy 2009 and are identified on the State    AO6.2
Planning Policy Interactive Mapping System.
                                                                  All stormwater runoff is treated to achieve maximum
                                                                  removal of nutrients, gross pollutants and suspended
                                                                  solids as determined by cost to efficiency ratios. (e.g.
                                                                  bioretention basins must be sized to 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                                                                AO7.1 – Not Applicable
Water quality treatment systems use natural                       Water quality treatment systems are designed to be                   The proposed change of use from a Multiple Dwelling
processes and materials, whenever possible, and are               integrated into the landscape        consistent with the             unit to a Short Term Accommodation unit involves no
integrated into development to enhance biodiversity               technical design guideline published by Healthy Land and             physical works or alterations, leaving existing
and landscape benefits.                                           Water Water by Design for the feature. (eg. For                      stormwater systems and unchanged, ensuring
                                                                  Bioretention Basins: Bioretention Technical Design                   receiving waters are protected.