Approved Plans - MCU18-0097 · MCU18/0097

                 GOOD SHEPHERD LUTHERAN COLLEGE                                                                                                         ODYSSEY CONSULTING GROUP
                 Lot 30 on SP170751                                                                                                          Conceptual Stormwater Management Plan
                 115 Eumundi Noosa Road, Noosaville                                                                                                                Project No: K4277


                 TABLE OF CONTENTS
                 1.0      INTRODUCTION .................................................................................................................................................. 1
                           1.1     Background ................................................................................................................................................ 1
                           1.2     Scope .......................................................................................................................................................... 1
                 2.0      DESCRIPTION OF SUBJECT SITE ........................................................................................................................... 2
                           2.1     Location...................................................................................................................................................... 2
                                               Site Topography.......................................................................................................................... 2
                                               Vegetation and Land Use ........................................................................................................... 2
                           2.2     Proposed Development.............................................................................................................................. 3
                 3.0      SITE HYDROLOGY AND HYDRAULICS ................................................................................................................... 3
                           3.1     Background ................................................................................................................................................ 3
                           3.2     Predevelopment ......................................................................................................................................... 3
                                               Catchment Definition and Lawful Point of Discharge ................................................................. 3
                                               Coefficient of Runoff ................................................................................................................... 3
                                               Time of Concentration ................................................................................................................ 4
                                               Design Flow Rates ...................................................................................................................... 4
                           3.3     Post Development ...................................................................................................................................... 4
                                               Catchment Definition and Lawful Point of Discharge ................................................................. 4
                                               Coefficient of Runoff ................................................................................................................... 5
                                               Time of Concentration ................................................................................................................ 5
                                               Design Flow Rates ...................................................................................................................... 5
                           3.4     External Catchments .................................................................................................................................. 6
                                               Catchment Definition.................................................................................................................. 6
                                               Coefficient of Runoff ................................................................................................................... 6
                                               Time of Concentration ................................................................................................................ 6
                                               Design Flow Rates ...................................................................................................................... 7
                                               External Catchment Channel Conveyance .................................................................................. 7
                 4.0      STORMWATER DETENTION ................................................................................................................................. 7
                           4.1     Objective .................................................................................................................................................... 7
                           4.2     Hydraulic Model ......................................................................................................................................... 7
                           4.3     Detention Volume ...................................................................................................................................... 8
                 5.0      WATER QUALITY ASSESSMENT ........................................................................................................................... 9
                           5.1     Background ................................................................................................................................................ 9
                           5.2     Water Quality Objectives ........................................................................................................................... 9
                           5.3     Construction Phase .................................................................................................................................. 10
                                               Common Pollutants .................................................................................................................. 10
                                               Performance Criteria ................................................................................................................ 10
                                               Sediment and Erosion Controls ................................................................................................. 10
                                               Water Quality Monitoring and Inspections .............................................................................. 11
                                               Reporting .................................................................................................................................. 11
                           5.4     Operational Phase .................................................................................................................................... 12
                                               Stormwater Quality Improvement Devices ............................................................................... 12
                                               Design Parameters of the Stormwater Quality Improvement System ...................................... 12
                                               Post Development Modelling Results - Mitigated .................................................................... 13
                 6.0      OPERATIONAL PHASE MAINTENANCE REQUIREMENTS ......................................................................................13
                           6.1     Bio-retention Basin Maintenance ............................................................................................................ 13
                 7.0      CONCLUSIONS ...................................................................................................................................................14




                 K4277-0002-E                                                                     18 June 2019                                                                        Page ii of iii

Document Set ID: 20894174
Version: 1, Version Date: 03/07/2019