Swmp

     2.3. Proposed Development Drainage Pattern

          2.3.1 Stormwater Concept
A rainwater tank is to be provided for each unit, nominally being an 18kL concrete in ground rainwater tank. 2kL of
the tank will be dedicated to attenuation of the run-off to reduce developed flow rates to below existing levels, with
the remaining allocated for reuse for each dwelling in accordance with Council’s Sustainable Building Code. Excess
rainwater will be discharged via stormwater outlets discharging to a new 600mm wide concrete dish drain within the
service road. Each tank will be provided a separate outlet spaced along the frontage to ensure peak discharge is
less than 25L/s at any location.

Remaining stormwater run-off from ground areas will discharge as overland sheet flows at a reduced rate compared
to existing levels, with paved areas being graded towards pervious areas where possible to encourage infiltration
into the sandy soils typical of the site.

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.




Project number 20230023                                                                                 Page 6 of 14
File 20230023 206 David Low Way SWMP.docx, 2023-10-17 Revision 1

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