Appendix I - Stormwater Management Plan

CONTENTS
1 INTRODUCTION                                                           1

2 SITE CONDITIONS                                                        2
2.1 EXISTING CONDITIONS                                                  2
2.1.1 LOCATION                                                           2
2.1.2 SITE TOPOGRAPHY                                                    2
2.1.3 EXISTING LAND USE                                                  3
2.2 DEVELOPED CONDITIONS                                                 3
2.2.1 DESCRIPTION OF PROPOSED DEVELOPMENT                                3
2.2.2 PROPOSED STORMWATER DRAINAGE INFRASTRUCTURE                        3

3 WATER QUALITY MANAGEMENT                                               4
3.1 GENERAL                                                              4
3.2 TEMPORARY WATER QUALITY CONTROL                                      4
3.3 PERMANENT WATER QUALITY CONTROL                                      4
3.4 WATER QUALITY OBJECTIVES                                             4
3.5 IMPLEMENTATION                                                       5
3.5.1 STORMWATER DETENTION WITH FILTRATION                               6
3.5.2 GROSS POLLUTANT TRAPS                                              7
3.5.3 CALCULATIONS                                                       7

4 STORMWATER QUANTITY MANAGEMENT                                         9
4.1 STORMWATER QUANTITY MANAGEMENT ASSESSMENT                            9
4.2 Q100 FLOOD ASSESSMENT                                                9
4.3 LAWFUL POINT OF DISCHARGE                                            9
4.4 10 YEAR ARI – CONTRIBUTING CATCHMENT FLOWS                           9
4.4.1 EXISTING SCENARIO                                                 10
4.4.2 PROPOSED DEVELOPMENT SCENARIO                                     10
4.5 100 YEAR ARI – CONTRIBUTING CATCHMENT FLOWS                         11
4.5.1 EXISTING SCENARIO                                                 11
4.5.2 PROPOSED DEVELOPMENT SCENARIO                                     11

5 CONCLUSION                                                            13




APPENDICES

Appendix A          Preliminary Layout Plans
Appendix B          Proprietary Product Information
Appendix C          Noosa Council River and Storm Tide Flood Mapping
Appendix D          Development Site Catchment Area Plan
Appendix E          PCdrain Analysis Results
Appendix F          10 year ARI – Rational Method Calculations
Appendix G          100 year ARI – Rational Method Calculations


Mogpropmanagement Pty Ltd                       Page ii                205-002-002R
Stormwater Management Plan
Noosaville Site