MCU14/0056 Response to SARA - Consulting Report

                                                                                                                  ENG
                                                      Engineering Report & Stormwater Management Plan
                                              Date:          27/01/2015     Document No.:     14012-ENG-04.Docx

                                               By:              AvT          Revision No.:              F


The proposed development will comply with the State Planning Policy December 2013 -
Healthy Waters policies.

A copy of the completed State Planning Policy December 2013 —Healthy Waters development
assessment code is attached in Appendix E.


                     b. Water Quality Objectives

Water quality parameters and the proposed limits applicable to this site have been selected in
accordance with South East Queensland Healthy Waterways Partnership’s Water by Design
WSUD Technical Design Guidelines for South East Queensland Version 1 (2006) and MUSIC
Modelling Guidelines for South East Queensland Version (2010).

It is proposed that best practise stormwater treatment be used and therefore it is required to
be demonstrated that achieve the following load reduction targets:


                  POLLUTANT TYPES                         WATER QUALITY OBJECTIVE (WQO)
             Total Suspended Solids (TSS)                  80% reduction of average annual load
                 Total Phosphorus (TP)                     60% reduction of average annual load
                    Total Nitrogen(TN)                     45% reduction of average annual load
                 Litter/gross pollutants                   90% reduction of average annual load
      Table 5.2:             Water Quality Objectives

                     c. MUSIC Model
The software program Model for Urban Stormwater Improvement Conceptualisation (MUSIC)
Version 6, was used was used to assess pollutant generation and the performance of the
stormwater treatment measures for the proposed development. Selection and testing of
stormwater management options was undertaken in accordance with MUSIC Modelling
Guidelines prepared by Water by Design (2010).

The MUSIC model was set up using five catchment areas:
      1.     Service         The proposed service station, car wash and main entry roads
      2.     Storage         The proposed self-storage units
      3.     Tourist         The proposed tourist park
      4.     Future Tourist The possible future tourist park extension
      5.     Future          The possible future development

The catchments where further split to include roof areas, road areas and ground areas in
accordance with the MUSIC Modelling Guidelines prepared by Water by Design (2010).




A PO Box 26, Carina Q 4152                                                                       10 | P a g e
E [email protected]
W www.vtce.com.au