24647 Seaview Tce Enviro Mgmt Plan

                                                                                                          MCU14/0084

                  27.     At the completion of the development a suitably qualified and accredited consultant must
                          provide certification to Council that states that:
                          a.      the development has been undertaken in accordance with the design
                          b.      the development will not have any long term effects on the stability of the subject
                                  site or any adjoining properties
                          c.      the site has a minimum factor of safety against landslip of 1.5.
                          Stormwater
                  28.     A detailed stormwater drainage design prepared and certified by an RPEQ must be
                          provided for the development. The works must be undertaken in accordance with an
                          Operational Works approval and must include in particular:
                          a.      the development must not cause an increase in the volume and velocity of waters
                                  discharged into the existing gully at the north of the house site in a Q2 (0.393AEP),
                                  Q5 (0.181AEP), Q10(0.095AEP), Q50 (0.020AEP)and Q100 (0.010AEP) rainfall
                                  event
                          b.      all stormwater collected and outlet from the development (including the external
                                  catchment and driveway areas) must be outlet below the level of 26m AHD
                          c.      stormwater outlets must not have potential to create concentrated flow paths or
                                  generate flows sufficient to erode or scour the loose surface sands
                          d.      all stormwater outlet locations must include energy dissipaters designed in
                                  accordance with QDUM in conjunction with level spreaders constructed parallel to
                                  the contour to facilitate dispersed sheet to disperse flows across the site to pre
                                  development velocities in a Q2 (0.393AEP), Q5 (0.181AEP), Q10 (0.095AEP), Q50
                                  (0.020AEP) and Q100 (0.010AEP) rainfall event at the location where waters
                                  discharge from the level spreaders
                          e.      include detail design which demonstrates that drain outlets do not have any
                                  realistic potential to create concentrated flow paths or generate flows sufficient to
                                  erode or scour the loose surface sands
                          f.      stormwater infiltration pits are prohibited
                          g.      excavation/filling for stormwater infrastructure within the Open Space Conservation
                                  zone must:
                                  (i)     be undertaken by hand and not by mechanical means
                                  (ii)    be aligned and located to avoid disturbance to existing vegetation
                                  (iii)   the exact alignment of infrastructure must be determined onsite with a
                                          Council delegate
                          h.      include Erosion and Sediment Control measures in accordance with industry best
                                  practice (IECCA and the Manual for Erosion and Sediment Control Volume 1.2 by
                                  Sunshine Coast Regional Council) to demonstrate that erosion is unlikely to occur
                                  during the construction phase of the development
                  29.     Until such time all construction, landscaping and building works are complete and the site
                          is effectively stabilised, construction and vegetation clearing activities must be managed
                          such that appropriate emergency stabilization measures are retained on the site and
                          implemented prior to rainfall to prevent erosion.
                  30.     Pool water overflow must be discharged to sewer.
                  31.     All site fencing must be installed and maintained to facilitate natural overland flows.
                          Fencing must not cause collection and concentration of stormwater flows.
                          General
                  32.     Any damage caused to any public utility during the course of construction must be
                          repaired to council’s standards and at no cost to Council.

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Document Set ID: 19879056
Version: 1, Version Date: 16/03/2015                                                                 Print Date: 16 March 2015, 2:32 PM