Minor Change Report MCU21 0117 02 (As Published) · MCU21/0117.02

               36.     A stormwater quality treatment system must be provided for the development. The works
                       must be undertaken in accordance with the Bioretention Technical Design Guidelines (Water
                       by Design, 2012), and must include in particular stormwater quality treatment devices of a
                       size and location generally in accordance with the approved engineering operational works
                       plans as prepared by Morgan Consulting Engineers.


               Assessment of Request
               The requested amendment was referred to development engineering for consideration.
               Development engineering advise;
               The proposed engineering related changes include:
                     1. A deck extension to the Unit 6 terrace spanning across the proposed stone pitched swale;
                     2. Replacement of the Unit 8 terrace with a deck spanning across the level spreader /
                        stormwater discharge location;
                     3. Re-configuration of the bio-retention basin resulting in an increase of the bio-retention
                        area from 9m² to 16m².
               A site inspection confirmed that construction has occurred at the site regarding the enlargement
               level spreader and bio retention area. The bio-retention basin results in an increase area from 9m²
               to 16m². It is unclear why the inconsistency between the approved plans and the constructed
               infrastructure has occurred however the works do not impact the functioning of the stormwater
               design approved for the development consistent with Council’s Planning Scheme Policy - SC6.7.6
               Stormwater Management.
               Plans relevant to the MCU have been amended to ensure maintenance of the bio retention area
               can occur via common property and as such Council support the proposed changes.


               Recommendation
               Agree. It is recommended existing conditions 34 and 35 be amended as follows.


               Stormwater Drainage
               34.     The site must be provided with a stormwater drainage system connecting to a lawful point of
                       discharge and be in accordance with the Queensland Urban Drainage Manual (QUDM). The
                       works must be undertaken in accordance with an Operational Works approval and include in
                       particular:
                       a)     The works generally as shown in accordance with on concept plan 23098/SK10
                              Revision G the approved engineering operational works plans as prepared by Morgan
                              Consulting Engineers.
                       b)     Collection and lawful discharge of stormwater to ensure that adjoining properties,
                              reserves and roads are protected from ponding or actionable nuisance from stormwater
                              as a result of any works undertaken.
                       c)     The site stormwater system is to accommodate stormwater from Lot 1 RP153798
                              external to the site, including registration of drainage easements over the site drainage
                              system in favour of Lot 1 RP153798.
                       d)      the use of gravity stormwater drainage and not surcharge pits


               35.     A stormwater quality treatment system must be provided for the development. The works
                       must be undertaken in accordance with the Bioretention Technical Design Guidelines (Water
                       by Design, 2012), and must include in particular stormwater quality treatment devices of a

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Document Set ID: 24138568
Version: 7, Version Date: 17/04/2026