RFI - Attachment B - Stormwater management Report · MCU20/0026

CO NT E NT S

1           Introduction ............................................................................................................................ 1
2           Site Description ..................................................................................................................... 1
2.1         Location and Land Use ............................................................................................................ 1

2.2         Lawful point of discharge ......................................................................................................... 2

2.3         Upstream drainage connection ................................................................................................ 2

2.4         Flooding ................................................................................................................................... 2

3           Stormwater Quantity Management ...................................................................................... 2
3.1         Catchment Summary ............................................................................................................... 2

3.1         Stormwater Detention & Infiltration .......................................................................................... 3

3.1         Hydrologic and Hydraulic Modelling ........................................................................................ 3

3.2         XP Storm Results .................................................................................................................... 5

4           Water Quality Management .................................................................................................. 7
4.1         Operational Phase ................................................................................................................... 7

4.2         Construction Phase ................................................................................................................. 8

4.2.1       Design Objectives .................................................................................................................... 8
4.2.2       Erosion and Sediment Control ............................................................................................... 10
4.2.3       Maintenance and Monitoring Requirements .......................................................................... 11
5           conclusion ............................................................................................................................ 12
6           Appendices ........................................................................................................................ A-1
Appendix A – Erosion Hazard Assessment (IECA) ............................................................................ A-1

Appendix B – Preliminary Engineering Drawings ............................................................................... B-1

Appendix C – Site Survey & Architectural Drawings .......................................................................... C-1




11 June 2020                                           Stormwater Management Report                                                                   iii
S20-023                                             40 Park Crescent, Sunrise Beach