Information Request MCU23 0007 [As Published]

                 Issue – Sight Distance Analysis
                 The proposed development will significantly increase the volume of traffic utilising the Maple
                 Street access. Council is concerned the redevelopment of the site and the proposed access
                 will result in the creation of unsafe traffic conditions for all road users due to the existing on-
                 street carparks and bus-stop. There is insufficient information to demonstrate that the
                 proposed access complies with Austroads’ Guide to Road Design Part 4A and is safe for use.
                 Council has reviewed RECOR’s Sight Line Layouts and Sections (C60) dated 28 March 2022
                 and has identified the following issues:
                        •    A Safe Intersection Sight Distance (SISD) has not been demonstrated in accordance
                             with Section 3.2.2 of Austroads’ Guide to Road Design Part 4A;
                        •    The longitudinal sections provided in C60 do not extend the length of the SISD (as
                             the SISD has not been calculated);
                        •    An unbroken line of sight (both longitudinally and from a ‘layout’ perspective),
                             required when demonstrating the SISD, has not been demonstrated when the
                             existing bus-stop to the north is occupied and when the carparks to the south are
                             occupied; and
                        •    The Minimum Gap Sight Distance (MGSD) described in C60 has not been
                             demonstrated in accordance with Section 3.2.3 of Austroads’ Guide to Road Design
                             Part 4A.
                 Information Required
                 2.     Provide a ‘Traffic Impact Report’ (or the like) and amended plans that demonstrates the
                        proposed access is safe for all road users by complying with Austroads’ Guide to Road
                        Design Part 4A. The ‘Traffic Impact Report’ (or the like) and amended plans must be
                        prepared by a suitably qualified person (RPEQ – Registered Professional Engineer of
                        Queensland) and include, but not be limited to:
                      a. demonstrate compliance with Section 3.2.2 of Austroads’ Guide to Road Design Part
                         4A by calculating the minimum Safe Intersection Sight Distance and demonstrating an
                         unbroken line-of-sight can be achieved, both longitudinally and from a ‘layout’
                         perspective;
                      b. demonstrate compliance with Section 3.2.3 of Austroads’ Guide to Road Design Part
                         4A by demonstrating an unbroken line-of-sight can be achieved, both longitudinally
                         and from a ‘layout’ perspective, for the Minimum Gap Sight Distance between both
                         conflict points and vehicles travelling along Maple Street; and
                      c. assume all parking (cars and buses) are occupied when demonstrating an unbroken
                         line-of-sight.


                 Issue – Earth Bank Discharge
                 RECOR’s Erosion and Sediment Control Plan and Details (C20) dated 28 March 2022
                 indicates that rainwater captured in the proposed Earth Bank will discharge into an existing
                 outlet along the Myall Street frontage. It is unclear to Council where this existing outlet is
                 located, and the quality of the water being discharged from this outlet (and into Council’s
                 stormwater network).
                 Information Required
                 3.     Provide additional detail demonstrating where and how the runoff from the proposed
                        Earth Bank will discharge. The additional detail must be prepared by a suitably qualified
                        person (RPEQ – Registered Professional Engineer of Queensland).




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Document Set ID: 22307810
Version: 2, Version Date: 17/02/2023