RFI - Civil Engineering Response

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




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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