B Current Decision Notice · 132007.2398

                                                                                    132007.2398.01

      system and in this regard temporary fencing shall be provided around the trees during
      construction to help protect them.
      Plans shall be submitted to the Council for approval that clearly show the type and
      extent of the pervious pavement and the temporary fencing prior to obtaining a
      Development Permit for Operational Works.
64.   Where retained trees are located in areas proposed to filled on site (or are located on
      neighbouring allotments to the actual site to be filled), there will be a need to prevent fill
      material from being placed on the trees root system. To this end the design of the filling
      works will need to incorporate terracing around the tree or a similar means of ensuring
      that the natural ground level around the trees remains generally the same as existing.
      These measures shall clearly be shown on the plans submitted for Operational Works
      approval and any drainage required to drain these areas shall also be shown on the
      plans.
Stormwater Drainage
65.   A suitably qualified Registered Professional Engineer, specialising in hydraulics shall
      prepare engineering drawings and specifications for stormwater designs and shall be
      submitted in conjunction with an application for a Development Permit for Operational
      Works.
66.   Peak discharges of stormwater shall be managed in accordance with the Concept
      Stormwater Management Plan for Cooroy Retirement Village Trading Post Road, Cooroy
      prepared by Brown Consulting dated June 2008 and any subsequent amendments
      approved by Council.
67.   Stormwater pipelines within the site shall cater for 1 in 10 Years storm event and
      secondary flowpaths shall be provided within the site to cater for 100 years storm event.
68.   The development must not adversely impact on the existing drainage conditions on other
      properties including not depriving dams on other properties of their natural stormwater
      runoff.
69.   The applicant shall revise the Concept Stormwater Management Plan for Cooroy
      Retirement Village Trading Post Road, Cooroy prepared by Brown Consulting dated
      June 2008 to detail a stormwater treatment train that can achieve Load Reduction
      Targets for Total Suspended Solids, Total Phosphorous and Total Nitrogen in
      accordance with the Healthy Waterways Water Sensitive Urban Design – Technical
      Guidelines for South East Queensland (2006). This revised stormwater treatment train
      for the site shall ensure that nutrients can be adequately treated prior to release off site.
      The revised Concept Stormwater Management Plan shall specify water quality
      objectives for stormwater prior to it leaving the site to ensure the modelled outcomes are
      achieved. All stormwater runoff treatment must be undertaken within the development
      areas of the site.
      The applicant shall submit an amended plan for Council approval prior to a Development
      Permit for Operational Works being issued.
70.   Stormwater Quality Improvement Devices as detailed within the Concept Stormwater
      Management Plan for Cooroy Retirement Village Trading Post Road, Cooroy prepared
      by Brown Consulting dated June 2008 and any updates approved by Council shall be
      installed within the development to ensure compliance with the designated water quality
      objectives are achieved. Stormwater likely to contain grease and oil (i.e. from carparking
      areas) shall be managed via grease and oil arrestors prior to treatment within
      bioretention basins and wetlands.
71.   Wetlands and bioretention basins shall be designed and constructed in accordance with
      Healthy Waterways Water by Design Construction and Establishment Guidelines:
      Swales, Bioretention Systems and Wetlands February 2009.


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