Appendix A - Decision Notice & Approved Plans · 132007.2446.05

26.   All stormwater drainage (including roof water overflow from the rainwater storage system)
      shall be collected and discharged so there is no net increase in stormwater runoff from the
      site. Stormwater drainage permitted to drain from the site shall be discharged into Council’s
      existing drainage structure (drainage pit at the frontage of the site in Pacific Avenue). Plans
      of the drainage design shall be prepared by a Registered Professional Civil Engineer and
      submitted to Council prior to obtaining a Development Permit for Operational Works.
27.   The applicant shall ensure that the development will not adversely impact on the drainage
      conditions on other properties. As the there will be significant filling and a potential for
      obstruction to the natural stormwater runoff from adjoining properties, where applicable
      appropriate stormwater drainage pipes shall be installed within the site to collect and
      discharge stormwater runoff from adjoining properties to prevent additional ponding/flooding
      on other properties or diversion of stormwater runoff onto other properties. A Development
      Permit for Operational Works shall be required.
28.   To ensure that polluted run-off does not enter Council’s stormwater drainage system,
      stormwater run-off from the carparking areas and the driveways shall have the first flush (the
      first 12 mm of rainfall or hose-down) collected in a grease/oil arrestor/gross pollutant trap
      provided on site prior to being permitted to discharge into Council’s drainage system.
      All other clean stormwater, such as roof water, can be collected on site and discharged
      through a single underground drain line directly into the existing drainage system, bypassing
      the grease/oil arrestor/gross pollutant trap. To this end, a detailed maintenance plan shall be
      prepared for the proposed grease/oil arrestors/gross pollutant trap, which shall be submitted
      to the Council for approval prior to obtaining a Development Permit for Operational Works.
      The approved maintenance plan shall be incorporated in the on going maintenance scheme
      for the development and a copy of this shall be provided for Council’s records prior to
      commencement of the approved Use. A Development Permit for Building Works shall not be
      granted until a Development Permit for Operational Works has been issued in regard to the
      drainage scheme.
29.   All site stormwater drainage shall be by means of a gravity system.
      Sewer Mains
30.   The site shall be connected to Council’s existing sewerage reticulation systems and be
      constructed in accordance with Council’s standards and requirements at no cost to Council.
31.   The existing sewer main that traverses the site and the sewer main that runs in the adjoining
      property at the rear of the site and the ‘zone of influence’ (taken as the area within a 45-
      degree angle measured from the invert of the sewer main to the finished surface level) shall
      be accurately located and determined by a licensed Surveyor and shown on all plans
      submitted for Operational Works approval.
      To ensure Council’s sewer main is accessible for maintenance purposes and is protected
      from risk of damage no structures requiring a building permit (eg. buildings, swimming pools,
      retaining walls exceeding 1m in height, raised terraces, etc) shall be constructed within this
      ‘zone of influence’ or within 1.5m of the centreline of the sewer main, whichever is the greater.
      As such the applicant shall amend Operational Works plans including Building plans to
      ensure compliance.




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