stormwater mgJ00300R1V1_25_Kauri_St_Cooroy_Complete · MCU18/0165

25 Kauri St Cooroy




                                                                   TABLE OF CONTENTS

1      INTRODUCTION ............................................................................................................................................... 1
2      SITE AND DRAINAGE CHARACTERISTICS........................................................................................................... 2
3      PROPOSED DEVELOPMENT .............................................................................................................................. 3
4      STORMWATER QUANTITY ............................................................................................................................... 4
    4.1         BASE CASE ......................................................................................................................................................... 4
    4.2         UN-MITIGATED DEVELOPED CASE .......................................................................................................................... 6
    4.3         VALIDATION ....................................................................................................................................................... 8
    4.4         MITIGATED DEVELOPED CASE ................................................................................................................................ 8
5      STORMWATER QUALITY ................................................................................................................................ 11
    5.1     WATER QUALITY OBJECTIVES .............................................................................................................................. 11
    5.2     MODELLING DETAILS ......................................................................................................................................... 11
       5.2.1 Software ................................................................................................................................................... 11
       5.2.2 Model Parameters ................................................................................................................................... 11
       5.2.3 Water Quality Treatment Catchments..................................................................................................... 12
       5.2.4 Bioretention Details ................................................................................................................................. 14
    5.3     WATER QUALITY RESULTS................................................................................................................................... 15
    5.4     CONSTRUCTION PHASE STORMWATER MANAGEMENT ............................................................................................. 16
    5.5     WSUD IMPLEMENTATION .................................................................................................................................. 17
    5.6     MAINTENANCE AND OPERATION .......................................................................................................................... 17
6      CONCLUSION ................................................................................................................................................. 18
7      QUALIFICATIONS & LIMITATIONS .................................................................................................................. 19
8      REFERENCES .................................................................................................................................................. 20



     Appendices
Appendix A Survey
Appendix B Proposed Site Plan
Appendix C Rational Method Calculation – Developed Site Catchment
Appendix D Basin Storage Curve




J00300R1V1                                                                                                                                                                      iii