2576 - SBSMP-01 (Feb 2026)

CONTENTS


1.0    INTRODUCTION..................................................................................................... 1

2.0    SITE DESCRIPTION ............................................................................................... 2
 2.1      Reference Standards and Guidelines .............................................................. 3
 2.2      Catchment Hydrology ....................................................................................... 3

3.0    STORMWATER QUALITY MANAGEMENT ........................................................... 5
 3.1      Construction Phase .......................................................................................... 5
 3.2      Post-Construction Phase ................................................................................. 6
 3.3      MUSIC Modelling ............................................................................................... 8
 3.4      Stormwater Assets – Maintenance ................................................................ 12

4.0    STORMWATER QUANTITY MANAGEMENT ...................................................... 14
 4.1      Summary.......................................................................................................... 14
 4.2      Design Storm Events ...................................................................................... 15
 4.3      WBNM Hydrologic Model ................................................................................ 16
 4.4      WBNM Analysis Pre-Development Scenario ................................................. 17
 4.5      WBNM Analysis Post-Development, Unmitigated Scenario......................... 18
 4.6      WBNM Analysis Post-Development, Mitigated Scenario.............................. 19

5.0    FLOODING ........................................................................................................... 21

6.0    CONCLUSION ...................................................................................................... 22

7.0    LIMITATIONS AND CLOSURE ............................................................................ 23