BBNE00529_0002_0001-REP-001-1-73 Eumundi-Noosa Rd SMP

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.      Information Request                                                                                                                                                                              4
3.      Stormwater Quality Management                                                                                                                                                                    6
        3.1        Overview                                                                                                                                                                              6
        3.2        Operational Phase                                                                                                                                                                     6
        3.3        Model Development                                                                                                                                                                     6
                   3.3.1         Catchments                                                                                                                                                              6
                   3.3.2         Climate Data                                                                                                                                                            7
                   3.3.3         Modelling Parameters                                                                                                                                                    7
        3.4        Treatment System                                                                                                                                                                      9
                   3.4.1         Treatment Train Sizing                                                                                                                                                  9
        3.5        Water Quality Model Results                                                                                                                                                         10
        3.6        Treatment Train Operation and Maintenance                                                                                                                                           11
                   3.6.1         Construction & Establishment                                                                                                                                          11

4.      Stormwater Quantity Management                                                                                                                                                                 12
        4.1        Existing Detention Basin                                                                                                                                                            12
                   4.1.1         Existing Scenario                                                                                                                                                     12
                   4.1.2         Developed Scenario (unmitigated)                                                                                                                                      13
                   4.1.3         Mitigation Scenario                                                                                                                                                   15
                   4.1.4         Existing Detention Basin – ARR Update                                                                                                                                 16
        4.2        Townhouse Site                                                                                                                                                                      17
                   4.2.1         Catchment                                                                                                                                                             17
                   4.2.1         Results                                                                                                                                                               17
        4.3        Flows South to Starboard Avenue                                                                                                                                                     18

5.      Conclusion                                                                                                                                                                                     19
6.      QUALIFICATIONS                                                                                                                                                                                 20
Appendix A: Proposed Site Layout Plan                                                                                                                                                                  21
Appendix B: Preliminary Engineering Design Plans                                                                                                                                                       22
Appendix C: WBNM Results Summary                                                                                                                                                                       23



Tables
Table 2.1: MUSIC Model Results .......................................................................................................................................................................... 5
Table 3.1: Water Quality Objectives .................................................................................................................................................................... 6
Table 3.2: Treated Catchment Properties ............................................................................................................................................................ 6
Table 3.3: Rainfall-Runoff Parameters ................................................................................................................................................................. 7



73 EUMUNDI - NOOSA ROAD, NOOSAVILLE I BBNE00529_0002_0001-REP-001-1                                                                                                                                     iii