Stormwater Management Plan 12_05_26

                                                                                                                                      ABN 51 640 311 842
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Contents
1.0         Introduction ................................................................................................................................ 4
2.0         Proposed Development.............................................................................................................. 4
3.0         Site Access ................................................................................................................................ 5
   3.1      Sight Distances .......................................................................................................................... 5
   3.2      Parking ....................................................................................................................................... 5
   3.3      Service Vehicles ......................................................................................................................... 6
   3.4      Waste Collection ........................................................................................................................ 6
4.0         Earthworks ................................................................................................................................. 6
Stormwater Management ........................................................................................................................ 7
   4.1      Drainage Network & Legal Point of Discharge .......................................................................... 7
   4.2      External Catchments .................................................................................................................. 7
   4.3      Flooding ..................................................................................................................................... 7
   4.4      Stormwater Quality Management .............................................................................................. 7
      4.4.1         Construction Phase Stormwater Quality Management ..................................................... 7
   4.5      Stormwater Quantity Management ............................................................................................ 7
      4.5.1         General .............................................................................................................................. 7
      4.5.2         Rational Method ................................................................................................................ 8
      4.5.3         Modelling ........................................................................................................................... 8
      4.5.4         Existing & Developed Case Summary .............................................................................. 9
      4.5.5         Mitigated Case................................................................................................................. 10
      4.5.6         OSD Tank Details ............................................................................................................ 11
      4.5.7         Reuse Tank Details ......................................................................................................... 11
5.0         Service Provisions .................................................................................................................... 12
   5.1      Potable Water & Sewer ............................................................................................................ 12
   5.2      Communications & Electrical ................................................................................................... 12
6.0         Conclusion ............................................................................................................................... 12
LIMITATIONS ........................................................................................................................................ 13
Appendix A – Civil Engineering Drawings ............................................................................................. 14
Appendix B – Construction Phase Stormwater Quality Management .................................................. 15




 12 May 2026