Storm Water management plan · MCU12/0133.03

Noosa Council documents


                  Bligh Tanner Consulting Engineers                                                                 Page iv
                  Noosa Flexi Learning Centre Stormwater Management Plan
                  August 2012




                  EXECUTIVE SUMMARY

                  The Noosa Flexi-Learning Centre aims to create a welcoming and distinctly un-institutional
                  learning environment for disenfranchised and disengaged youth in the Noosa Region. The
                  design response is to create a beach-house style environment which minimises its impact on
                  the site, as well as on the planet’s resources.

                  The young people that will use the centre are approaching life with few privileges. By
                  creating a learning environment that embodies great sustainability features, the design team
                  hopes to provide accelerated opportunities for them to understand and interact with the types
                  of environmental knowledge that we believe will be important to the world they are inheriting.
                  Such learning opportunities can help build their pride, self-confidence and a sense of
                  purpose.

                  The stormwater management strategy helps create such a place by:
                     • Preserving the natural hydrology across most of the site by building lightweight
                         structures on piers, and minimizing soil compaction during construction
                     • Harvesting rainwater and using a prominent elevated rainwater tank that both
                         symbolizes the responsible use of water and reduces the electricity needed for
                         pumping.

                  This report complies with the format for site-based stormwater management plans as set out
                  in the Urban Stormwater Planning Guidelines (DERM 2010) as referenced under the State
                  Planning Policy 4/10 Healthy Waters.

                  The site is low risk from an erosion and sediment control perspective, and accordingly a
                  minor erosion and sediment control plan will be provided as part of the operational works
                  application. Moving away from slab-on-ground construction significantly reduces earthworks
                  and hence the risk of sediment moving off the site during construction.

                  The stormwater quality management strategy is compliant with the requirements of the SEQ
                  Regional Plan Implementation Guideline No. 7—as referenced in the Noosa Plan.
                  Significantly, because the ground-level impervious area is kept at 10% of the site area, the
                  stormwater quality objective is satisfied by capturing and managing the first 10 mm of runoff.

                  For major storm events, runoff will continue to discharge across the front boundary of the site
                  as sheet flow. The design of the site, with limited ground level impervious surfaces, has a
                  minor impact on peak flows. A small area of depressed landscape at the front of the lot can
                  provide the 1 m³ of flood detention needed to avoid any increase in peak flows leaving the
                  site.




                                                                                                 Print Date: 2 March 2020, 2:19 PM