Attachment A - Existing Approval · 132008.1128.02

Noosa Council documents




                                                                                                    132008.1128.01

               61.    As Constructed drawings and data shall be certified by a qualified experienced Civil
                      Engineer for design intent, and a Licensed Surveyor shall certify the cadastre and the
                      location, level and type of all services and structures. All of which shall be submitted to
                      Council for checking and for Council’s records.
                      The data must fully detail levels for all engineering works including but not limited to
                      drainage structures, finished ground levels and pavement surface levels. The data shall
                      be submitted in the Asset Design and As Constructed (ADAC) digital format. (Guidelines
                      on the use of ADAC are available at www.adac.com.au).
                      Approval of works shall not be granted until all As Constructed information has been
                      supplied and accepted by Council.
               HYDRAULICS & WATER QUALITY
               Stormwater Drainage
               62.    The site must be provided with a stormwater drainage system connecting to a lawful
                      point of discharge. The works must be undertaken in accordance with an Operational
                      Works approval and designed in accordance with the requirements if the Queensland
                      Urban Drainage Manual, and must include in particular the provision of a relief overland
                      flowpath from the proposed sag point in the internal street drainage system. The
                      development layout is to be amended as necessary to achieve compliance with this
                      condition.
               Stormwater Quality Management
               63.    A stormwater quality treatment system must be provided for the development which
                      achieves compliance with the Management Objectives specified in Section 4 of the
                      Girraween Stormwater Management Plan prepared by Ecological Engineering and dated
                      22/12/2006. The Stormwater Management Plan (SWMP) submitted with the application
                      is specifically not approved and a revised site SWMP consistent with the above is
                      required to be provided with the application for Operational Works. The revised site
                      SWMP is to specifically address the following:
                         63.1.    Stormwater detention storage for downstream flood mitigation is not required
                                  for this site and is to be deleted from the design. The stormwater devices are to
                                  be raised in order to eliminate or reduce retaining structures and instead
                                  provide batters to the biofiltration surface
                         63.2.    Revised MUSIC modelling is to be provided demonstrating how the Girraween
                                  Stormwater Management Plan pollutant load reduction targets and frequency of
                                  discharge targets for surface flows to the national park will be achieved
                         63.3.    Groundwater and in-situ infiltration testing is to be undertaken at the RL of the
                                  proposed infiltration surface/interface for each proposed device and is to be
                                  used to inform the design
                         63.4.    Level spreaders must be provided at the interface between all discharge
                                  locations and the adjoining National Park. The plans must be supported by
                                  calculations demonstrating all proposed level spreaders are appropriately sized
                                  to dissipate flows at non-erosive velocities for peak runoff events up to and
                                  including the 1 in 100 year ARI event of critical duration. Level spreaders are to
                                  be provided parallel to the downstream natural surface contours.
               64.    The works must be undertaken in accordance with an Operational Works approval and
                      the latest version of the Water Sensitive Urban Design Technical Design Guidelines for
                      South East Queensland, and must include in particular:




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Document Set ID: 20451866
Version: 1, Version Date: 14/11/2017                                                              Print Date: 16 November 2017, 8:52 AM