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CONTENTS
1.      Introduction                                                                                                                                                                                       1
        1.1        Project Purpose and Scope                                                                                                                                                               1
        1.2        Site Characteristics                                                                                                                                                                    1
        1.3        Project Data and Guidelines                                                                                                                                                             3
        1.4        Performance Criteria                                                                                                                                                                    3
        1.5        Previous Approval                                                                                                                                                                       3

2.      Stormwater Quality Management                                                                                                                                                                      4
        2.1        Overview                                                                                                                                                                                4
        2.2        Operational Phase                                                                                                                                                                       4
        2.3        Model Development                                                                                                                                                                       4
                   2.3.1          Catchments                                                                                                                                                               4
                   2.3.2          Climate Data                                                                                                                                                             5
                   2.3.3          Modelling Parameters                                                                                                                                                     5
        2.4        Treatment System                                                                                                                                                                        7
                   2.4.1          Treatment Train Sizing                                                                                                                                                   7
        2.5        Water Quality Model Results                                                                                                                                                             8
        2.6        Treatment Train Operation and Maintenance                                                                                                                                               9
                   2.6.1          Construction & Establishment                                                                                                                                             9

3.      Stormwater Quantity Management                                                                                                                                                                   10
                   3.1.1          Existing Scenario                                                                                                                                                      10
                   3.1.2          Developed Scenario (unmitigated)                                                                                                                                       11
                   3.1.3          Mitigation Scenario                                                                                                                                                    13

4.      Conclusion                                                                                                                                                                                       14
5.      QUALIFICATIONS                                                                                                                                                                                   15

Appendices
Appendix A: Proposed Site Layout Plan                                                                                                                                                                    16
Appendix B: Preliminary Engineering Design Plans                                                                                                                                                         17
Appendix C: WBNM Results Summary                                                                                                                                                                         18



Tables
Table 2.1: Water Quality Objectives .................................................................................................................................................................... 4
Table 2.2: Treated Catchment Properties ............................................................................................................................................................ 4
Table 2.3: Rainfall-Runoff Parameters ................................................................................................................................................................. 5
Table 2.4: Pollutant Export Parameters ............................................................................................................................................................... 6
Table 2.5: Bioretention Parameters..................................................................................................................................................................... 7
Table 2.6: MUSIC Model Results .......................................................................................................................................................................... 8
Table 3.1:WBNM Sub-Catchment Fraction Impervious Values - Existing Scenario ........................................................................................... 11
Table 3.2: Existing Peak Flows ........................................................................................................................................................................... 11
Table 3.3:WBNM Sub-Catchment Fraction Impervious Values - Developed Scenario ...................................................................................... 11
Table 3.4: Peak Discharge Comparison – Existing Vs Developed Sceanrio ........................................................................................................ 12


73 EUMUNDI - NOOSA ROAD, NOOSAVILLE I BBNE00529_0002_0001-REP-001-0                                                                                                                                       iii