Reference Document - Flood & Stormwater Management Plan 28_8_2025

                               3.2.2.        MUSIC Parameters ........................................................................... 29
                               3.2.3.        Catchment Areas .............................................................................. 30
                               3.2.4.        MUSIC Model Layout ....................................................................... 31
                      3.3.      Treatment Measures .......................................................................... 32
                               3.3.1.        Bioretention System ......................................................................... 32
                               3.3.2.        Sediment Forebays .......................................................................... 33
                      3.4.      Results 33

                 4.   CONSTRUCTION PHASE MANAGEMENT ...................................... 35
                      4.1.      Erosion and Sediment Control .......................................................... 35

                 5.   ESTABLISHMENT AND OPERATIONAL PHASE
                      MANAGEMENT ............................................................................... 36
                      5.1.      Establishment ...................................................................................... 36
                      5.2.      Operational .......................................................................................... 36

                 6.   CONCLUSION .................................................................................. 37

                 7.   REFERENCES .................................................................................... 38




                 List of Tables
                      Table 1-1: Reformatted MUSIC results ........................................................ 14
                      Table 1-2: Pavilion St Road capacity calculation using Manning’s’
                      equation .......................................................................................................... 17
                      Table 2-1: Summary of Existing Catchment Parameters .......................... 20
                      Table 2-2: Existing Catchment Peak Flows .................................................. 20
                      Table 2-3: Comparison of WBNM and Rational Method Peak Flows –
                      SUB3 ................................................................................................................ 21
                      Table 2-4: External catchment overland flow (entering site) and pipe
                      flow (diverted around site via Pavilion St)................................................... 22
                      Table 2-5: Summary of Developed Catchment Parameters ..................... 22
                      Table 2-6: Comparison of Peak Flows At Site Outlet (Existing Vs.
                      Developed)...................................................................................................... 22
                      Table 2-7: Summary of Basin Structure Details ......................................... 23
                      Table 2-8: Comparison of Peak Flows (Existing Vs. Mitigated) ................. 24
                      Table 2-9: Comparison of 1% AEP event across all durations (Existing
                      Vs. Mitigated) .................................................................................................. 24
                      Table 2-10: Existing and Proposed Peak discharge at the Site
                      Boundary. ....................................................................................................... 26
                      Table 2-11: 1% AEP Flood Storage Comparison. ........................................ 26
                      Table 2-12: Lot Levels Compared to Adjacent 1% AEP Peak Flood
                      Levels............................................................................................................... 27
                      Table 3-1: Site Stormwater Quality Objectives (Operational Phase) ....... 29




                 23-0167SMP01-V4 | Stormwater Management Plan | 33 Pavilion Street, Pomona

Document Set ID: 24092538
Version: 1, Version Date: 02/09/2025