Permissible Change Decision Notice Approval or App in Part - 010.2006.00001168.002 [As Published] · 132006.1168.02

                                                                                    2006/1168



      The landscape buffer planted between the grassed areas of the site and adjoining
      retained native vegetation must be a mixture of the following species:
          Endiandra sieberi
          Eleocarpus reticulates
          Peralostigma pubescens
          Lophostemon confertus
          Corymbia intermedia
          Allocasuarina sp.
          Myoporum acuminatum
          Lomandra longifolia
         Dianella congesta
27.3 The maintenance regime for the bioretention basin must be specified in the Operational
     Environmental Management Plan approved for the site as required by this approval and
     include as a minimum:
      27.3.1 An appropriately qualified soil scientist must undertake the following tests of the
             filter material within the Bioretention basins and raingardens once every 5
             years:
                   Orthophosphate (PO43-) Content; and
                   Total Phosphorous; and
                   Total Nitrogen Content; and
                  Hydroconductivity testing in accordance with the FAWB method as
                    detailed in the Water by Design Construction and Establishment
                    Guidelines.
      27.3.2 In the event whereby non compliance with one or more of the following filter
             media criteria, a retest of the soils must be undertaken to verify the results. If
             there is still a non- compliance a Corrective Action must be instigated to replace
             the Bioretention basin filter media and drainage layers. Replacement of filter
             material and drainage layers must occur within one year of a non-compliant test
             result and ensure that all elements of the Bioretention basin and / or
             raingardens are replaced in accordance with this and the associated
             landscaping approval.
      27.3.3 Soil filter material must comply with the following criteria at all times:
                   Soil Orthophosphate (PO43-) Content of the filter material must remain
                     less than 80mg/kg.
                   Total Phosphorous Content of the filter material must remain less than
                     100mg/Kg.
                   Total Nitrogen Content of the filter material must remain less than
                     1000mg/kg
                    Hydro conductivity must not be less than 120mm/hr or more than
                      280mm/hr.
27.4 Fertilisation of the site must occur in accordance with the following requirements:
            The use of Sulphur coated fertilisers on the site are prohibited.
            No more than 3 fertilising events are permitted to occur per 12 month period.
            Fertilising events must be scheduled to occur within low rainfall periods.
            A soil test must be undertaken by an appropriately qualified and experienced
              person prior to each fertilising event to identify the minimum base elements
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