Judgement - 11C Church Street

      Stormwater Drainage
38.   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, the Queensland Urban Drainage Manual and AS3500 and must include
      in particular:
      a.   the works as generally described in the Hydraulic Impact Assessment Rev E
           prepared by BAX Engineering dated 14/07/2023.
      b.   extension of the site stormwater system to accommodate stormwater from
           catchments external to the site, including registration of drainage easements over
           the flowpaths within the site which convey external catchment. Easement locations
           and dimensions are to be shown on the operational works drawings.
      c.   design of the batter chute and rock stabilisation within the natural drainage channel
           is to be undertaken in accordance with the Brisbane City Council Guideline
           Erosion Treatment for Urban Creek Guidelines Version 3 (2004)
      Stormwater Quality Management
39.   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
      Bioretention Technical Design Guidelines (Water by Design, 2014), and must include in
      particular:
      a.   stormwater quality treatment devices of a size and location generally in
           accordance with those shown in the Hydraulic Impact Assessment Rev E prepared
           by BAX Engineering dated 14/07/2023
      b.   bioretention devices which:
             I.    are designed generally in accordance with IPWEA Standard Drawing No.s
                   DS-073, DS-075 and DS-076
             II.   are provided with a free-draining outlet from the sub-soil drainage system.
40.   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.
41.   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.
42.   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.




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