Delegated Report - Code - Planning OPW25 0121 (As Published)

                      Geotechnical Stability
               34.    All works must be carried out in accordance with the recommendations contained in the
                      reference document Geotechnical Investigation (25221-001-Rev0) dated 28 August 2025
                      and prepared by Tectonic listed within this Decision Notice.
                      Earthworks and Retaining Walls
               35.    All earthworks shall be undertaken in accordance with the provisions of AS 3798 Guidelines
                      on Earthworks for Commercial and Residential Development, with geotechnical testing
                      undertaken in accordance with Section 8 of the Standard, and to a minimum of ‘Level 1’ as
                      defined in Appendix B. Test results as required by AS 3798, and a certificate of quality and
                      uniformity of fill shall be provided by a RPEQ and submitted to Council.
               36.    Fall protection must be provided to retaining walls that are over 1m high.
               37.    Slope and batters are a maximum grade of:
                      a.      1 in 6 where in proximity to waterbodies;
                      b.      1 in 4 for grassed areas;
                      c.      1 in 3 for planted areas; and
                      d.      1 in 2 and steeper for combined structural engineering and planting solutions.
               38.    All combined structural engineering and planting solutions for batters with a grade of 1:2 or
                      steeper must be certified by a Registered Professional Engineer of Queensland (RPEQ)
                      before Council will sign the plan of survey. Certification must confirm that all surfaces are
                      stabilised using techniques that provide immediate short-term stabilisation and continued
                      effectiveness through the medium and long term.
                      Stormwater Drainage & Flooding
               39.    All works must be undertaken in accordance with the approved plans and reference
                      document Flood & Stormwater Management Plan (23-0167SMP01, Rev. 4) dated 15 July
                      2025 and prepared by Colliers to ensure that there is no net-loss of flood plain storage or
                      any off-site flood impacts for all events up to the 1% AEP (2100) event.
               40.    Appropriate scour protection must be provided at the outlet of all stormwater pipes including
                      temporary outlets.
               41.    Works associated with this permit must not adversely impact on the existing drainage
                      conditions on other properties (e.g., by blocking or interfering with natural overland flows).
               42.    Construction of all internal stormwater drainage works must comply with the relevant
                      section/s of Australian Standard AS/NZS 3500.3.
                      Bioretention Basins – Construction
               43.    The bioretention devices must be constructed in accordance with the document Construction
                      and Establishment Guidelines: Swales, Bioretention Systems and Wetlands (Water by
                      Design, 2009). Option 1 of the staged construction and establishment methods is to be
                      followed as documented in the guidelines
               44.    During construction and establishment of the bioretention devices, the supervising RPEQ
                      must ensure that the device is constructed in accordance with the document Construction
                      and Establishment Guidelines: Swales, Bioretention Systems and Wetlands (Water by
                      Design, 2009) and that the forms contained in section 3.15 including the associated
                      supporting information and data are completed. These forms and certification from the RPEQ
                      that the device has been constructed in accordance with the Construction and Establishment
                      Guidelines: Swales, Bioretention Systems and Wetlands (Water by Design, 2009), all
                      conditions of approval, and the approved engineering drawings must be submitted to Council
                      prior to plan sealing



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Document Set ID: 24187118
Version: 9, Version Date: 04/12/2025