O2 stormwater Report Rev Oct 2015

Table of Contents
1.     Introduction                                                             1
       1.1.    Objective                                                        1
2.     Site Description                                                         2
       2.1.    Land use                                                         2
       2.2.    Topography                                                       2
3.     Land Use and Nutrient Loads                                              3
       3.1.    Historical Land Use                                              3
       3.2.    Proposed Land Use                                                3
4.     MUSIC Modelling                                                          5
       4.1.    Rainfall Data                                                    5
       4.2.    Evapotranspiration Data                                          5
       4.3.    Regional Modelling                                               6
               4.3.1. Model Objectives                                          6
               4.3.2. Catchment Description                                     6
               4.3.3. Rainfall Runoff Parameters                                9
               4.3.4. Pollutant Export Parameters                               9
               4.3.5. Regional MUSIC Model Layout                              10
               4.3.6. Modelling Results                                        10
       4.4.    Site Specific MUSIC Model                                       11
               4.4.1. Model Objectives                                         11
               4.4.2. Pollutant Export Parameters                              11
               4.4.3. Treatment Options                                        12
               4.4.4. MUSIC Results                                            13
5.     Flooding and Water Quantity Management                                  14
       5.1.    Introduction                                                    14
       5.2.    Catchments                                                      14
       5.3.    Rainfall Intensities                                            14
       5.4.    Hydrologic Modelling                                            15
               5.4.1. Rainfall Losses                                          15
               5.4.2. Roughness Coefficients                                   15
       5.5.    Peak Flow Rate                                                  15
       5.6.    Regional Flooding                                               17
       5.7.    Mitigation Measures                                             18
6.     Erosion and Sediment Control (ESC)                                      19
       6.1.    Erosion Risk Assessment                                         19
       6.2.    Erosion Control and Rehabilitation                              20
       6.3.    Drainage Control                                                21
               6.3.1. Design Standard                                          21
       6.4.    Sediment Control                                                21
               6.4.1. Design Standard                                          21
       6.5.    Roles and Responsibilities                                      22
       6.6.    Corrective and Preventative Action                              22
7.     Summary and Recommendations                                             24
8.     Reference List                                                          26



Stormwater Management Plan – Lot 1 on SP108094, 305 Lake Macdonald Drive   Page iv

D’VINERIPE
R003370a