RFI Reponse

Noosa Council documents




                    Information Required
                    16.     Provide a natural hazard emergency management plan that demonstrates how
                            patrons will be safely evacuated in the event of a bushfire or flood. The plan is to be
                            prepared by a suitably qualified person.
                    17.     Provide an assessment of the formation of Eastern Branch Road between the subject
                            site and the major road network. The assessment must be undertaken by a
                            Registered Professional Engineer of Queensland (RPEQ) and include but not be
                            limited to:
                            17.1. The current formation and it’s suitability to cater for the expected increase in
                                  traffic movements and the use by unfamiliar drivers
                            17.2. Any improvements to the formation to cater for the increases created by the
                                  proposed development
                            17.3. Any specific measures (signage etc) to warn drivers of the risks during natural
                                  hazard events. These measures are to be included in the natural hazard
                                  emergency management plan

                 RESPONSE
                 A Road standard assessment and Hydraulic assessment by BAX Engineering is attached.
                 The pre and post development scenario for the subject and the external catchment hydrology
                 has been reviewed to ensure safe access can be achieved or refuge sought during flood
                 events. Stormwater quantity and quality from each of the proposed cabin locations has also
                 been considered.
                 The following conclusions have been made:
                    • based on the proposed locations of the cabins, the areas proposed appear to be free
                         of flood during the modelled storm events.
                       •    Access to the cabins would be restricted during the design storm events modelled.
                            Nonetheless so would access to the property based on the unpassable creek crossings
                            on Eastern Branch Road. Therefore, access from the cabins to a point of refuge has
                            been considered and can be achieved. This point of refuge would be the existing
                            dwelling/managers residence at a higher elevation.
                       •    Stormwater quality treatment can be achieved through rainwater harvesting tanks and
                            buffer areas.
                       •    The environmental footprint for the cabins would be minimal based on the areas
                            already cleared and the tracks and culverts already in place.
                 In summary, the proposed cabin locations on the subject site will result in non-actionable
                 nuisance of stormwater runoff, be free of flooding and have safe refuge opportunities should it
                 be faced with unpredicted intermittent weather.
                 Road Standard
                 It is considered that the gravel formation of the Eastern Branch Road at the site frontage is in
                 fair condition with some minor erosion and scour visible.


                 A drainage path is noted across Eastern Branch Road and appears to have formed from the
                 adjacent property access. While this does not appear to pose a significant risk to road users,
                 the frontage could benefit from reshaping to prevent such scour and a new gravel surface laid
                 as part of council’s ongoing maintenance programme.




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Document Set ID: 21954368 Version: 2,
Version Date: 10/06/2022                                                                              Print Date: 10 June 2022, 10:42 AM