Minor Change Existing Approval MCU21/0156.03 [As Published]

               47.    All landscape works must be established and maintained in accordance with the approved
                      design for the life of the development, and in a manner that ensures healthy, sustained and
                      vigorous plant growth. All plant material must be allowed to grow to full form and be
                      refurbished when its life expectancy is reached.
               48.    All landscape works must be maintained generally in accordance with the approved design
                      for the life of the development.
                      Stormwater Drainage
               49.    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
                      and the Queensland Urban Drainage Manual, and must include in particular:
                      a.      the works described in Site Based Stormwater Management Plan (prepared by SCG
                              Consulting Engineers, dated 02/03/2022);
                      b.      the use of gravity stormwater drainage and not surcharge pits;
                      c.      Design of the internal roadway drainage to ensure all floor level including garages
                              (particularly on the downslope side of the internal roadway) are not inundated in the
                              1%AEP climate change event at Year 2100;
                      d.      Design of the internal drainage system to ensure all flows in the 1%AEP climate change
                              event at Year 2100 reach the detention basin;
                      e.      Updated analysis for the portion of the site discharging to Eumundi-Noosa Rd either
                              demonstrating that the roadway flow criteria of QUDM (Section 7.4) are still achieved
                              in the road for the 1%AEP event despite the increase in discharge from the site, or
                              provision of detention for this part of the site such that non-worsening discharge to the
                              road is achieved.
                      Stormwater
               50.    In conjunction with the application for Operational Works approval, provide CCTV survey of
                      the downstream stormwater network and demonstrate that the system has the capacity
                      assumed in the Stormwater Management Plan (prepared by SCG Consulting Engineers,
                      dated 02/03/2022). Maintenance and rectification of the system is to be undertaken if
                      required to restore system capacity, prior to commencement of works within the development
                      site.
                      Stormwater Quality Management
               51.    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 latest version
                      of the Water Sensitive Urban Design Technical Design Guidelines for South East
                      Queensland, and must include in particular:
                      a.      stormwater quality treatment devices of a size and location generally in accordance
                              with those shown in Site Based Stormwater Management Plan (prepared by SCG
                              Consulting Engineers, dated 02/03/2022)
                      b.      bioretention devices which:
                               i.      are modified to include a maintenance access ramp from the internal roadway to
                                       the floor of the basin with minimum width of 2.5m;
                              ii.      are designed generally in accordance with the Bioretention Technical Design
                                       Guidelines (Water by Design, 2014)
                             iii.      are designed generally in accordance with IPWEA Standard Drawing No. DS-
                                       073, DS-075, DS-076, and DS-078
                             iv.       are provided with a free-draining outlet from the sub-soil drainage system
                      c.      Rainwater storage and reuse consistent with the Site Based Stormwater Management
                              Plan (prepared by SCG Consulting Engineers, dated 02/03/2022)


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47. All landscape works must be established and maintained in accordance with the approved
design for the life of the development, and in a manner that ensures healthy, sustained and
vigorous plant growth. All plant material must be allowed to grow to full form and be
refurbished when its life expectancy is reached.

48. All landscape works must be maintained generally in accordance with the approved design
for the life of the development.

Stormwater Drainage

49. 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
and the Queensland Urban Drainage Manual, and must include in particular:

a. the works described in Site Based Stormwater Management Plan (prepared by SCG
Consulting Engineers, dated 02/03/2022);

b. the use of gravity stormwater drainage and not surcharge pits;

Cc. Design of the internal roadway drainage to ensure all floor level including garages
(particularly on the downslope side of the internal roadway) are not inundated in the
1%AEP climate change event at Year 2100;

d. Design of the internal drainage system to ensure all flows in the 1%AEP climate change
event at Year 2100 reach the detention basin;

e. Updated analysis for the portion of the site discharging to Eumundi-Noosa Rd either
demonstrating that the roadway flow criteria of QUDM (Section 7.4) are still achieved
in the road for the 1%AEP event despite the increase in discharge from the site, or
provision of detention for this part of the site such that non-worsening discharge to the
road is achieved.

Stormwater

50. In conjunction with the application for Operational Works approval, provide CCTV survey of
the downstream stormwater network and demonstrate that the system has the capacity
assumed in the Stormwater Management Plan (prepared by SCG Consulting Engineers,
dated 02/03/2022). Maintenance and rectification of the system is to be undertaken if
required to restore system capacity, prior to commencement of works within the development
site.

Stormwater Quality Management

51. 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 latest version
of the Water Sensitive Urban Design Technical Design Guidelines for South East
Queensland, and must include in particular:

a. stormwater quality treatment devices of a size and location generally in accordance
with those shown in Site Based Stormwater Management Plan (prepared by SCG
Consulting Engineers, dated 02/03/2022)

b. bioretention devices which:

i. are modified to include a maintenance access ramp from the internal roadway to
the floor of the basin with minimum width of 2.5m;

ii. are designed generally in accordance with the Bioretention Technical Design
Guidelines (Water by Design, 2014)

iii. are designed generally in accordance with IPWEA Standard Drawing No. DS-
073, DS-075, DS-076, and DS-078

iv. are provided with a free-draining outlet from the sub-soil drainage system

Cc. Rainwater storage and reuse consistent with the Site Based Stormwater Management
Plan (prepared by SCG Consulting Engineers, dated 02/03/2022)

Page 10 of 16
Document Set ID: 23576112

Version: 3, Version Date: 25/02/2025