RFI - Att 4 - Stwtr Mngmt Plan

                                                                                                           ingeniir

EXECUTIVE SUMMARY

Ingeniir Pty Ltd (Ingeniir) have been engaged by Kumar Mahadevan to produce this Stormwater Management
Plan (SMP) in support of the Material Change of Use application for the Proposed Duplex at 23 Coral Tree
Avenue Noosa Heads 4567, Lot 17 on RP90014.

This report is comprised of stormwater quantity and quality assessments. The quantity assessment is
undertaken to confirm a ‘non-worsening’ discharge of peak flow from the developed site. The quality
assessment is undertaken to determine the required stormwater treatment measures to be implemented on
site to comply with Local and State Authority requirements.

Stormwater Quantity Calculations consider storm events up to and including the 1% AEP storm event. The
purpose is to ensure that the existing infrastructure and/or downstream properties are not adversely
affected by the proposed development.

The stormwater quantity assessment determined that a negligible increase estimated runoff rates will occur
due to the proposed development and the site will maintain kerb discharges in accordance with IPWEAQ
standards.

Currently no quality stormwater management measures are in place for the existing subject site. As the
proposed development area is less than 2500m2; there are no required operable stormwater quality
objectives required by State and Local Stormwater Quality Objectives. A minimum 3,000 litres of rain water
storage is to provided per dwelling and reused for non-potable purposes to satisfy Council sustainability
outcomes.

All relevant standards and guidelines are addressed in this Stormwater Management Plan including;
criteria from the Noosa Shire Council Planning Scheme Policy, Queensland Urban Stormwater Quality
Planning Guidelines (2010), Queensland Urban Drainage Manual (QUDM) and the Australian Rainfall and
Runoff Guidelines.




                                              Ingeniir Pty Ltd | 221304-SMP-01
                ABN: 99 642 485 363 | PO Box 988 Maroochydore QLD 4558 | [email protected] | 0404157187
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