20230025_Gympie Tce Hotel SWMP

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

     •    The development proposes to discharge run-off to the existing drainage network and kerb and channel
          downstream of the site in a similar manner to existing conditions.

     •    There is no increase in estimated stormwater flows from the site. On site detention is not proposed for the
          development.

     •    It is proposed to provide 30m2 of Bioretention in the north eastern corner of the site. Stormwater runoff from
          the eastern half of the site will discharge to this basin prior to discharge to the existing stormwater gully pit
          in Albert Street. The bioretention basin has been sized at 1.5% of the contributing catchment area.

     •    It is proposed to provide an Atlan Basin and Stormsacks in the north western corner of the site to treat runoff
          prior to discharge to the existing gully pit in Gympie Terrace.

     •    An Atlan Hydrochannel is proposed in the southern western corner of the site to treat runoff from the
          driveway area.

     •    During construction, erosion, and sediment control measures in accordance with best practice standards are
          to be implemented to minimise potential contaminants impacting the downstream receiving environment.
          An erosion and sediment control plan shall be developed by the contractor prior to any works commencing
          on the proposed development.

     •    The proposed development is able to be effectively managed to ensure that stormwater is captured and
          conveyed through the site utilised apt proposed retention systems, without causing nuisance flows to
          adjacent or downstream properties, and in conjunction with contribution charges towards a future treatment
          area, the development is able to satisfy the Noosa Shire Council requirements for stormwater quality and
          quantity.




Project number 20230025                                                                                  Page 15 of 22
File 20230025_Gympie Tce Hotel SWMP, 2023-05-31 Revision 0



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