Further Advice Assessment Manager - 132001 210127 3 [as published]

                 stormwater attempting to exit the drainage outlet and may cause a backflow if left
                 unaddressed.
                 The proposed causeway crossings do not include 4.0-metre-wide carriageways as required
                 by Section 10.3.5 of Sunshine Coast Council’s Open Space Landscape Infrastructure Manual
                 2022 (Type 5 Fire Access Trail).
                 Information Required
                 2. Provide additional detail demonstrating how the drainage outlet will function during up to,
                    and including, the 10% AEP event once the causeway has been constructed. The
                    additional detail must be prepared by a suitably qualified person (RPEQ) and include, but
                    not be limited to:
                    a. demonstrate no damming will occur after the installation of the proposed causeways
                        during up to, and including, the 10% AEP event; and
                    b. provide comment by the designing engineer discussing how the causeway has been
                        designed to function during up to, and including, the 10% AEP event.
                      Please note that Council are unlikely to support low-flow pipes in permanent causeway
                      structures.
                 3. Provide an amended causeway design that includes 4.0-metre-wide carriageways as
                    required by Section 10.3.5 of Sunshine Coast Council’s Open Space Landscape
                    Infrastructure Manual 2022 (Type 5 Fire Access Trail). The amended design must be
                    prepared by a suitably qualified person (RPEQ).


                 Issue – Stormwater Quality
                 Section 9.3 of STP Consulting’s DA Civil Engineering Report & Stormwater Management Plan
                 (STP22-0347) dated 23 March 2023 states that a proprietary device will be used to address
                 stormwater quality. Council do not support the use of proprietary devices to address
                 stormwater quality.
                 Information
                 4. Provide an amended Stormwater Management Plan that meets Council’s stormwater
                    quality concerns without the use of proprietary devices. The amended plan must be
                    prepared by a suitably qualified person.
                 3.     DUE DATE FOR RESPONSE TO FURTHER ADVICE

                 A response to the further advice is required by 30 May 2023. Email your response to
                 [email protected].     OTHER DETAILS

                 Should you have any further queries in relation to the above, please do not hesitate to contact
                 me on the number above.

                 Yours faithfully


                 Tara Norley
                 Development Planner




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Document Set ID: 22380592
Version: 4, Version Date: 02/05/2023