2022-08-18 Ordinary Meeting Minutes

ORDINARY MEETING MINUTES                                                     18 AUGUST 2022


        Water Quality
        57.   A stormwater quality treatment system must be provided for the development. 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:
              a.   stormwater quality treatment devices of a size and location generally in
                   accordance with those shown in Stormwater Management Plan, prepared by
                   MPN Consulting, dated 27th June 2022;
              b.   bioretention devices which:
                   i.     demonstrate that Bio basin 1 is able to gravity drain to the existing
                          stormwater infrastructure on site. The outlet pipe grade must be a
                          minimum of 0.5% to ensure the bio basin is free draining.
                   i.     are designed generally in accordance with the Bioretention Technical
                          Design Guidelines (Water by Design, 2012)
                   ii.    are designed, where applicable, generally in accordance with IPWEQA
                          Standard Drawing No. DS-073, DS-075, DS-076, and DS-078
                   iii.   are provided with a free-draining outlet from the sub-soil drainage
                          system
        58.   A maintenance manual is required to be prepared for the stormwater quality
              treatment devices, rainwater tanks and basement pump out system for the
              development. This manual is to be submitted to Council at Operational Works
              stage for review.
        59.   Permanent educational signage must be erected to educate the residents of the
              development about the function of the bioretention device(s). The dimensions,
              standard, presentation and location of the educational signage must be in
              accordance with an Operational Works approval.
        60.   All stormwater quality treatment devices must be maintained in accordance with
              the Water by Design (2009) Maintaining Vegetated Stormwater Assets (Version 1).
              The approved Operational Works drawings for the stormwater quality treatment
              system and detailed life cycle costing of the system must be attached as an
              addendum to this document. Records of all maintenance activities undertaken
              must be kept and made available to Council upon request.
        61.   Any proposed Community Management Statement required for the development
              must include Water by Design (2009) Maintaining Vegetated Stormwater Assets
              (Version 1) and must include the full cost of maintaining the system in accordance
              with Water by Design (2009) Maintaining Vegetated Stormwater Assets (Version
              1). The cost of maintaining the system must be included in the proposed levies for
              each unit owner.
        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 the Queensland Urban Drainage Manual, and
              must include in particular:
              a.   the detention system generally as described in Stormwater Management
                   Plan, prepared by MPN Consulting, dated 27th June 2022;
              b.   the use of gravity stormwater drainage and not surcharge pits to the
                   maximum extent practicable. Surcharge pits may only be used where the
                   catchment is composed of roof surfaces only;


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