MCU21-0177.01 -Applicant's Response · MCU21/0117.01

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Applicant’s Response

Refer to the updated Site Based Stormwater Management Plan (SBSMP) prepared by MCE, indicating that
the proposed development will discharge stormwater runoff inside the subject site’s property boundary at
pre-development drainage conditions. As the subject site will maintain existing drainage conditions,
permission to discharge downstream is not required in this instance.

Please refer to Attachment A - Engineering document prepared by Morgan Consulting.


Information Required by Council


2.     Either amend the application so that Lot 1 SP153798 becomes part of the application (with land
       owners consent) or amend the drainage and earthworks design so that earthworks within this lot is
       not required.


Applicant’s Response

Refer to the updated Concept Site Levels and Drainage Plan confirming that earthworks within Lot 1
SP153798 is not required.

Please refer to Attachment A - Engineering document prepared by Morgan Consulting.


Information Required by Council


3.     Provide updated engineering plans which provide all details necessary for construction and which
       are appropriate for an Operational Works permit to be issued.


Applicant’s Response


Prior to providing updated engineering plans as mentioned in Item 3, we would like to request confirmation
of the above item responses. Subsequently, we will submit our drawings suitable for the Operational Works
permit to be issued


Information Required by Council

4.     Provide an updated SWMP which contains additional detail plus revised modelling (as necessary) to
       address the following:
           i. Revise the pervious initial losses used in the XPSTORM model to be consistent with ARR Data
           HUB burst losses.
           ii. Provide a figure showing the XPSTORM model layout and describe how surface areas have
           been modelled as bypassing the detention tanks in all events and how flows in excess of Q20
           from roof areas bypass the tanks.

                                                                  PO Box 1818       07 5474 3873
                                                                  Noosa Heads       [email protected]
                                                                  QLD 4567          rgstrategic.com.au

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           iii. Undertake an assessment for the 1%AEP event at year 2100 by increasing the 1%AEP rainfall
           intensities by 20%


Applicant’s Response

The amended stormwater detention design has been remodelled in the Watercom DRAINS detention
modelling program using the Initial Loss Continuing Loss (IL-CL) hydrological model. Based on ARR
DataHUB’s burst losses, the pervious area initial loss (mm) and the pervious area continuing loss (mm/hr)
values used in the model are 32 and 2.6, respectively.

Refer to the updated Site Based Stormwater Management Plan (23098 – SBSMP – Rev 4) showing the post-
development mitigated model. With the addition of the 20% increase in rainfall intensities to address
climate change considerations, the updated modelling has been completed to ensure all flows will be
mitigated in the tanks up to a Q100 storm event.


Information Required by Council

5.     We note that the fence building material has been amended in response to the Further ssues dated
       11 March however the design still results in approximately 25 metres of exposed wall when viewed from
       the street which conflicts with PO17 and AO17.1 to AO17.4 of the Medium Density Residential zone code.
       Provide an amended landscape design with accommodates a degree of landscaping to screen the
       exposed 25 metre side boundary fence as indicated below.


Applicant’s Response

New plans, renders and landscaping has been proposed along the fence line as requested which now screens
the 25m boundary fence.

Please refer to Attachment 2 – Amended Plans + Attachment 3 Landscaping – prepared by Blackburne
Jackson.




                                                                   PO Box 1818        07 5474 3873
                                                                   Noosa Heads        [email protected]
                                                                   QLD 4567           rgstrategic.com.au

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This ends my client’s response to matters raised by Council within their Information Request.

We ask that Council proceeds with the assessment of this application under section 13.3 of the Development
Assessment Rules, effectively ending our applicant’s response period.

Should you require any additional information or have any queries please to not hesitate to contact us.



Kind Regards,




Russell Green APIA MQELA
Managing Director
RG Strategic




                                                                   PO Box 1818        07 5474 3873
                                                                   Noosa Heads        [email protected]
                                                                   QLD 4567           rgstrategic.com.au

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