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RFI - Civil Engineering Response

of 2
                                                                                                       File: 10256
20 November 2025


Noosa Council
PO Box 141
TEWANTIN QLD 4565


Attention: Georgina Schramm


Dear Georgina


RE:      23 BOTTLEBRUSH AVENUE – NOOSA HEADS
         RESPONSE TO FURTHER INFORMATION REQUEST
         MCU25/0067

Please find enclosed a response to the Noosa Council Request for Further Information in relation to the
Material Change of Use Application for Rooming Accommodation dated 7 July 2025

This letter addresses the engineering items with responses below.

Item 7

Issue – Earthworks

There's a significant slope across the site with existing property on all adjacent lots, the proposal
requires significant earthworks. Further detailed plans are to be provided to assist in determining
adjoining properties’ ground level, extent of retaining structures.

Information Required

7. Provide preliminary earthworks drawings including cross sections and spot levels of adjacent lots.



Response

The provided earthworks plan and sections within the Engineering Report show the neighbouring
property levels which have dictated the levels of the retaining walls as shown on plans.

The earthworks sections extend into the neighbouring properties and show the required retaining
extents.




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Item 9

Issue – Water Efficiency

A Stormwater Management Plan has been provided including detention measures. The development
has not incorporated rainwater retention for non-potable purposes such as irrigation.

Information Required

9. Demonstrate the development is achieving a sustainable water efficiency outcome. Provide and
updated stormwater management plan providing rainwater storage sufficient for the intended use in
accordance with the Sustainable Building Design Code.



Response

In accordance with the requirements of the Sustainable building code a 3000L or 3kL rainwater
harvesting tank will be constructed on site for the development under the driveway/car park area of the
collection of roofwater for reuse within non potable services such as toilet flushing, laundry and
landscape irrigation.

Overflow from the harvesting tank will discharge to the detention system prior to discharge from site.

The final location of the harvesting tank will be determined during the detail design period.



Feel free to contact the undersigned should you require any additional information.

Yours faithfully




Lachlan Stephenson
for and on behalf of

MPN CONSULTING PTY LIMITED




                                                                                                                                              2
Inspired engineering

20 November 2025
https://mpncnetau.sharepoint.com/sites/Administration/Shared Documents/10000-10999/10200-10299/10256/Letter/20-11-25 Noosa Council_Ltr.docx

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