Appendix E - Revised Stormwater Management Plan · MCU21/0175

 26 July 2022



6         CONCLUSION
This Stormwater Management Plan demonstrates that under the proposed concept plan
stormwater quality and quantity treatment is achievable to the levels required by State Planning
Policy July 2017.

The lawful point of discharge for the development site is the existing internal Noosa Civic Shopping
Centre stormwater infrastructure south of the proposed development. The existing Noosa Civic
Shopping Centre lawful point of discharge is the Creek to the South of the site.

Stormwater runoff from the new roof, carpark, internal road and servicing areas will be directed to
6 bioretention basins for stormwater quality treatment. Carpark runoff will sheet flow to these
basins, while roof water will be piped. High flow bypasses will be constructed around the
bioretention basins for flows exceeding the treatment flows.

Approximately 310m2 of the access driveway and the carpark will bypass the bioretention basins to
allow the driveways to join neatly into the existing internal road system. The treated areas will be
over treated so the overall net water quality objectives are achieved for the development.

Stormwater discharged from site is proposed to be consistent with the existing Emporium
showroom discharge. This development sits within a lot that has been allowed for in previous
stormwater calculations, therefore no detention is proposed for this development.


7         LIMITATIONS OF REPORT
MPN have prepared this report for the proposed commercial development at Lot 2, Noosa
Business Centre, Walter Hay Drive, Noosaville in accordance with MPN’s proposal to Stockwell.
This report is provided for the exclusive use of Stockwell for this specific project and its
requirements. It should not be used or relied upon by a third party and MPN accept no
responsibility for the use of this report by any party other than Stockwell.




 Excellence with Economy in Engineering                                                                17
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