20220237 73 Southern Cross Pde SWMP

 CONCLUSION
This Stormwater Management Report has outlined how the stormwater run-off from the site is to be managed to
comply with the relevant requirements and minimise any adverse impacts to the downstream catchments.

     •    Run-off from the development will be managed through an internal drainage network of pits and pipes to
          capture and convey run-off to the lawful point of discharge from the development, being kerb adaptor
          outlets in the Southern Cross Parade Street frontage. Run-off from impervious areas and the roof drainage
          will be conveyed and discharged at this location in the north-eastern corner of the site.

     •    Overland flow paths along the western and southern boundary will provide conveyance for upstream run-
          off. The internal pits will capture any excess run-off arriving in the site from upstream.

     •    The existing and proposed development site have been modelled for the ensemble of storm events for the
          site, which found there would be an insignificant increase to the peak discharge characteristics of the site
          being a maximum of 3L/s. This level of increase is not likely to result in significant impacts to the downstream
          environment, therefore no attenuation is proposed for the development.

     •    During construction, erosion and sediment control measures are to be implemented to minimise potential
          contaminants impacting the downstream receiving environment in line with the objectives of Appendix 2 of
          the SPP.

     •    As the development is a small residential site that does not significantly alter the pollutant generating
          characteristics of the site, stormwater quality treatment is not proposed for the development.

     •    The proposed stormwater solution is considered to suitably address the stormwater quality and quantity
          requirements of the Noosa Council Planning Scheme and minimise any adverse impacts to the downstream
          environment arising from the stormwater run-off from the proposed development.




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Project number 20220237
File 20220237 73 Southern Cross Pde SWMP.docx, 2022-10-31 Revision 1
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