Attachment 3 - Stormwater Management Plan

     2.3. Proposed Development Drainage Pattern

          2.3.1 Stormwater Concept
Stormwater run-off will be managed by an internal network of pits and pipes to collect upstream run-off, run-off from
impervious areas and roof drainage. The existing stormwater pit will be replaced and new piped outlets to discharge
into the Martin Street verge will be provided as the lawful point of discharge from the development.

The proposed development does not significantly alter existing run-off generation, and attenuation of the site is not
required. The majority of run-off generated by the development will be from roof area, which will be drained by
downpipes to discharge into the internal drainage network.

The remaining ground areas of the site will drain as overland surface flows infiltrating into the site soils consistent
with the current drainage conditions draining south towards the Martin Street road reserve.

The roof and allotment drainage system for the proposed site shall be designed to comply with:

     1. Noosa Shire Council Planning Scheme Policy (PSP) - Engineering Design Standards – Roads, drainage and
        earthworks;

     2. The Queensland Urban Drainage Manual (QUDM); and

     3. AS/NZS 3500.3:2015 - Plumbing and Drainage Part 3: Stormwater Drainage.

Refer to Appendix A Proposed Development Plan for the proposed stormwater drainage layout illustrating the
concept described above.



     2.4. Flood Considerations
Review of the Noosa Shire Council Intramaps flood layers including the Flood Hazards Overlay has identified that
the site is located outside of any flood or inundation areas within the locality indicating it is not expected that that
the proposed development will be subject to flooding.




Project number 20220116
File RECOR Preliminary Stormwater Management Report - 20220116.docx, 2022-09-27                                Page 6 of 14
Revision 1


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