2022-02-17 Ordinary Meeting Minutes

ORDINARY MEETING MINUTES                                                     17 FEBRUARY 2022


        Water Sensitive Design
        105. The active filter media of the bioretention device must be 27m². Active filter media
             area is the area of the bioretention basin surface that is not covered by any
             impermeable structure such as a sediment forebay, riser, etc.
        106. During construction and establishment of the bioretention devices, the supervising
             RPEQ must certify forms contained in section 3.15 of the Construction and
             Establishment Guidelines: Swales, Bioretention Systems and Wetlands (Water by
             Design, 2009). These forms and certification must be submitted to council prior to
             the sealing of the survey plan.
        107. A construction hold point with a council delegate must be established once the
             bioretention device underdrainage pipe work is installed. At the time of inspection,
             a sample of the drainage layer, transition layer, and filtration media materials must
             be stockpiled onsite accompanied by laboratory results that demonstrate that the
             media complies with the specifications contained in the latest version of the
             Guidelines for Soil Filter Media in Bioretention Systems (Facility for Advancing
             Water Biofiltration) and that the minimum hydraulic conductivity of 180mm/hr or as
             specified on the approved engineering plans will be achieved. The drainage layer,
             transition layer, and filtration media materials shall not be installed until the
             catchment draining to the bioretention device has 80% groundcover as determined
             by council’s delegate.
        108. Eighty percent (80%) of the catchment flowing to the bioretention basin must be
             effectively stabilised prior to the construction holdpoint for the Bioretention device.
        109. Prior to the release of the plan of survey, the supervising RPEQ must certify must
             certify that all hardstand areas of the development drain to a bioretention device
             designed and constructed in accordance with all relevant conditions of this
             approval, the Water by Design Bioretention Technical Design Guidelines, relevant
             aspects of the IPWEAQ Standard Drawing WSUD-drawing series and
             Construction and Establishment Guidelines: Swales, Bioretention Systems and
             Wetlands (Water by Design, 2009).
        Bioretention Devices - Landscaping
        110. Landscape plans must include a mixture of at least five of the following species for
             planting in the bioretention basin extended detention surface at a minimum density
             of 8 plants/m2:
              a.    Carex appressa
              b.    Carex fascicularis
              c.    Ficinia nodosa
              d.    Juncus usitatis
              e.    Lomandra longifolia
              f.    Ghania sieberiana
        111. Landscape plans for the areas surrounding the bioretention basin filter media
             footprint must be arranged to minimise shading to the filter media footprint are.
             Suitable plants include the following:
              a.    Cared appressa
              b.    Carex fascicularis
              c.    Ficinia nodosa
              d.    Juncus usitatis
              e.    Lomandra longifolia
              f.    Ghania sieberiana
              g.    Banksia robur
              h.    Dianella brevipendunculata
              i.    Themada triandra

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