Information Request MCU23-0135 [As Published] · MCU23/0135

                 15. Amend the SIDRA model to include the correct available lane storage for roundabouts L3
                     & L4. The current model shows queue storage lengths of less than 1m which is incorrect.


                 Issue – Construction Impacts
                 The development proposal will result in the interim loss of a significant quantity of parks
                 required for existing retail uses during the construction phase. It has not been demonstrated
                 how the parking capacity of the Civic Centre will be maintained.
                 Information Required:
                 16. Amend the traffic impact assessment to include how construction impacts from the loss of
                     parking spaces and adequate parking arrangements for construction vehicles will be
                     managed.


                 Stormwater design, water quality and reuse
                 Issue – Stormwater Quality System of Stage 1
                 Several bioretention systems within the existing car park will be removed as part of the
                 application. The full catchment currently draining to these devices (including any roof areas)
                 needs to be identified. If areas outside of Stage 2 drain to these devices, then the same areas
                 need to be treated within Stage 2 in the ultimate development.
                 Information Required:
                 17. Provide an existing catchment plan for Stage 1 of Noosa Civic and survey of all the existing
                     surface and roof drainage systems within Stage 1. Identify all existing catchment areas
                     draining to the existing bioretention systems which will be removed or altered (i.e. reduced
                     in size) as part of this proposal. Ensure the SWMP provides for equivalent treatment of
                     any areas outside of Stage 2 which current drain to these systems.
                 Issue – Stormwater Quality System of Stage 2
                 Further details are required to show that the proposed bioretention systems to treat Stage 2
                 are appropriately sized, will drain effectively and achieve adequate landscape integration.
                 Information Required
                 18. Breakdown the proposed stormwater catchment plan further so that the sub-catchment
                     areas draining to each bioretention system are clearly identified.

                 19. Provide preliminary sections for each of the proposed bioretention systems showing actual
                     proposed drainage levels and adjacent surface levels and show that the systems will drain
                     effectively, achieve an aesthetic landscape outcome, be able to be maintained, and not
                     require safety fencing.



                 Issue – Stormwater Drainage
                 Further details are required to show that the proposed redevelopment of the existing carpark
                 will not impact major overland flow drainage. The major overland flow path for the Stage 1
                 carpark was through the center of the carpark where the retail buildings will now be situated.
                 It appears that a trapped sag may be created at the western side of decked carpark where an
                 existing bioretention is proposed to be retained.
                 Information Required:




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Document Set ID: 22664361
Version: 1, Version Date: 15/11/2023