RFI - Stormwater management (flood report)

      Table 2-1: Summary of Existing Catchment Parameters .................................................................. 7
      Table 2-2: Existing Catchment Peak Flows ......................................................................................... 7
      Table 2-3: Comparison of WBNM and Rational Method Peak Flows ............................................. 7
      Table 2-4: Summary of Developed Catchment Parameters ........................................................... 8
      Table 2-5: Comparison of Peak Flows At Site Outlet (Existing Vs. Developed) .............................. 9
      Table 2-6: Summary of Basin Structure Details ................................................................................... 9
      Table 2-7: Comparison of Peak Flows Site A (Existing Vs. Mitigated) ............................................ 10
      Table 2-8: Comparison of Peak Flows Site A (Existing Vs. Mitigated) ............................................ 11
      Table 2-9: Existing and Proposed Peak discharge at the Site Boundary. ..................................... 12
      Table 2-10: 1% AEP Flood Storage Comparison. ............................................................................. 13
      Table 2-11: Lot Levels Compared to Adjacent 1% AEP Peak Flood Levels.................................. 13
      Table 3-1: Site Stormwater Quality Objectives (Operational Phase) ............................................ 14
      Table 3-2: Urban land use (Split Source Nodes) - Pollutant Export Parameters ........................... 15
      Table 3-3: MUSIC Runoff Generation Parameters ........................................................................... 15
      Table 3-4: Catchment Areas ............................................................................................................. 15
      Table 3-5: Bioretention Design Parameters ...................................................................................... 17
      Table 3-6: Sediment Forebay Design Parameters ........................................................................... 18
      Table 3-7: MUSIC Results – Load Based Pollutant Outputs ............................................................. 18


      LIST OF FIGURES
      Figure 1-1: Site Location ....................................................................................................................... 2
      Figure 1-2: Overland Flow Paths and Flood Hazard Overlay Mapping ......................................... 3
      Figure 2-1: Existing Catchment Delineation ....................................................................................... 6
      Figure 2-2: Developed Catchment Delineation ............................................................................... 8
      Figure 2-3: 1% (2100) AEP Peak Water Surface Elevation Reporting Locations ........................... 13
      Figure 3-1: WSUD Catchment Locality Plan ..................................................................................... 16
      Figure 3-2: MUSIC Model Layout ....................................................................................................... 16


      APPENDICES
                               Reconfiguration of Lot Plan and Concept Engineering Drawings
                               Rational Method and WBNM Outlet
                               Existing Flood Map
                               Proposed Flood Map
                               Flood Afflux Map




21-0166SMP01-V1 | Stormwater Management Plan | 25 Pavilion Street, Pomona