Attachment 6 - Stormwater Management Plan and Engineering Response. · MCU23/0078

NOOSA CITY PLAN - WATER QUALITY AND DRAINAGE CODE                                                                                              Job Ref No.: 22159
Performance Outcomes and Acceptable Solution

Table 9.4.8.3 – CRITERIA FOR ASSESSMENT

Stormwater quality and protection of      AO6.1                                              The design demonstrates that a drainage network will
receiving waters                                                                        PO   be provided that will comply with Council’s planning
                                          Stormwater runoff discharging into High
                                                                                             scheme policy where the proposal is located,
                                          Ecological Value waters as a result of
PO6                                                                                          designed, constructed and operated to protect and
                                          development causes no increase in gross
Development is located, designed,                                                            enhance environmental values and water quality of
                                          pollutants, total suspended solids, total
constructed and operated to protect                                                          waterways, wetlands, lakes, ground waters and
                                          phosphorous or total nitrogen compared to
and enhance environmental values and                                                         drainage systems.
                                          a predevelopment scenario.
water quality of waterways, wetlands,                                                        Refer to Bornhorst and Ward SBSMP report for
lakes, ground waters and drainage         AND                                                details.
systems.                                  AO6.2
                                          All stormwater runoff is treated to achieve
Editor’s note: Environmental values of    maximum removal of nutrients, gross
waters and water quality objectives are   pollutants and suspended solids as
prescribed in Schedule 1 of the           determined by cost to efficiency ratios.
Environmental Protection (Water)          (e.g. bioretention basins must be sized to
Policy 2009 and are identified on the     achieve at least 80% reduction in total
State Planning Policy Interactive         suspended solids, 60% reduction in total
Mapping System.                           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


1.  Solution: PO = Performance Outcome
                A/O = Acceptable Outcome
                N/A = Not applicable to this proposal
Noosa Civic Village Mixed Use Development, Noosaville