Reference Documents - MCU24 0141 & OPW24 0184 [As Published]

              Therefore, the proposed development will have a non-worsening effect on surrounding and adjacent
              properties with regards to stormwater discharge.
              At the pre-lodgement meeting held for the proposed development, council did not have any objections with
              regards to using stormwater treatment devices to provide stormwater detention/mitigation as shown in
              Appendix E.

              6. Conclusion
              It can be seen in the results presented in Tables 6 that the stormwater treatment measures designed for the
              proposed industrial complex achieve the performance criteria for water quality set by the NSC and by the SPP
              (2017). Annual load reductions of TSS, TP, TN and GP between the mitigated and unmitigated MUSIC model
              scenarios have been met or exceeded.
              The stormwater treatment measures for the proposed development were designed to achieve the maximum
              cost/benefit ratio for the optimal hydraulic loading of the treatment measures. Water Sensitive Urban Design
              (WSUD) measures have been proposed for the site and water quality modelling has demonstrated that the
              effective treatment of key pollutants is possible.
              Sufficient consideration of stormwater controls has been demonstrated by:
                                  Compliance with the requirements of Noosa Shire Council’s Load Based Reduction Targets;
                                  Compliance with Queensland State Planning Policy (2017);
                                  Compliance with Urban Stormwater Quality Planning Guidelines (2010);
                                  Compliance with QUDM (2013); and,
                                  Compliance with the EPP (Water) 1997
              Further, as the fraction impervious of the existing site is similar to that of the proposed development there is
              expected to be a minor decrease in stormwater peak flows discharging from the site. The proposed
              bioretention basin will assist in mitigating stormwater peak flows due to their extended stormwater detention
              depth. The proposed development will therefore have a non-worsening effect on adjacent and surrounding
              properties.
              This site, based on this SMP has demonstrated that efficient management of stormwater quality and quantity
              is possible by the management strategies nominated for the proposed development.

              7. References
                        Healthy Waterways (2018), MUSIC Modelling Guidelines Queensland, Brisbane
                        Department of State Development, Infrastructure and Planning (2017) State Planning Policy. Brisbane,
                        Queensland.
                        Department of Environment and Resource Management (2010) Urban Stormwater Quality Planning
                        Guidelines. Queensland, Australia.
                        CSIRO, 1999, Urban Stormwater: Best Practice Management Guidelines
                        Water by Design (2014), Bioretention Technical Design Guidelines (Version 1.1), Healthy Waterways
                        Ltd, Brisbane.
                        Institute of Public Works Engineering Australia, Queensland Division Ltd (2013) Queensland Urban
                        Drainage Manual, Third Edition.
                        Water by Design (2012), Maintaining Vegetated Stormwater Assets (Version 1), Healthy Waterways
                        Ltd, Brisbane.




240127 – Stormwater Management Plan             10 of 10