B07056.W-01A Complete - Stormwater [As Published] · 132007.2398

Concept Stormwater Management Plan
RSL Care – Cooroy Retirement Village



8.0        WATER SENSITIVE DESIGN CODE RESPONSE
This section presents a response to ‘Division 20 – Water Sensitive Design Code’ of Noosa Council’s ‘The Noosa
Plan’ to demonstrate that the specific outcomes have been met by the proposed development. Specific
Outcomes as set by Noosa Council have been sourced from Section 14.176, Table 14-58 of ‘The Noosa Plan’.
Code                                Probable Solutions                    Response
                                    (if code assessable)
Water Reuse                         S1.1 No solution provided             The development proposes retention
O1 Development uses a                                                     storage in the form of rainwater tanks
combination of detention and                                              for collection of roof water runoff from
retention systems to capture                                              buildings. Detention storage is
run-off from areas on the site;                                           proposed for mitigation of developed
AND                                                                       peak flows in the enlarged northern and
                                                                          southern dams according to relevant
                                                                          design standards.
                                                                          COMPLIANCE ACHIEVED
O2 Water storage devices must       S2.1 No solution provided             All modelling and design has
have sufficient capacity having                                           considered local rainfall patterns and
regard to local rainfall pattern                                          increase of impervious surfaces.
and the catchment area of roof                                            COMPLIANCE ACHIEVED
or other hard standing surface;
AND

O3 Captured water is utilised for   S3.1 Captured water is plumbed        Captured rainfall runoff is proposed for
all non-potable uses on site        to be available for all external      non-potable reuse where considered
AND                                 uses including gardening,             appropriate. ILU’s will reuse rainwater
                                    irrigation, ponds, filling swimming   for toilet flushing, laundry and external
                                    pools and outdoor cleaning, as        demands. Apartment buildings and the
                                    well as all ground floor toilet       Residential Aged Care building will
                                    cisterns and washing                  reuse rainwater for toilets and laundry.
                                    machine cold taps; and                The captured rainwater in some
                                    S3.2 Where the captured water is      underground tanks is proposed for
                                    used for toilet flushing and/or       irrigation of landscaped areas. A tap
                                    laundry use an automatic or           can be provided for swimming pool top
                                    manual interchange device that        up at Community Centre.
                                    allows alternate use of captured
                                    water or the reticulated water        Automatic or manual interchange
                                    supply is installed to ensure that    devices will be installed to ensure there
                                    there is a continual supply of        is a continual supply of water for
                                    water for sanitary flushing and       sanitary flushing and laundry use.
                                    laundry use.                          COMPLIANCE ACHIEVED
O4 On-site detention does not       S4.1 No solution provided             Detention basin storages have been
adversely impact on water                                                 designed to mitigate peak flows to
requirements downstream of                                                existing conditions. Retention devices
the site where the water is                                               have been designed to ensure annual
required to sustain the ecology                                           runoff is not significantly impacted. An
and hydrology of downstream                                               increase of runoff does occur, however
systems (environmental flows);                                            this is considered to be within
AND                                                                       acceptable limits and natural yearly
                                                                          variability. Therefore, this development
                                                                          has no adverse impacts on
                                                                          downstream sites.
                                                                          COMPLIANCE ACHIEVED




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