Attachment 6 - Stormwater Management Plan

R2015: NOOSA LANDFILL - STORMWATER MANAGEMENT PLAN



TABLE OF CONTENTS
1        INTRODUCTION                                                                                                                                                                                                      1
         1.1.      OBJECTIVE & SCOPE                                                                                                                                                                                       1
         1.2.      GUIDELINES                                                                                                                                                                                              2
         1.3.      LEGAL REQUIREMENTS                                                                                                                                                                                      2
         1.4.      LICENSE CONDITIONS AND WATER QUALITY OBJECTIVES                                                                                                                                                         3
         1.5.      PRINCIPLES OF SURFACE WATER MANAGEMENT FOR THE SITE                                                                                                                                                     4
         1.6.      DRAINAGE CONTROL                                                                                                                                                                                        4
                   1.6.1.       CLEAN WATER DIVERSION                                                                                                                                                                      5
                   1.6.2.       DIRTY WATER DRAINAGE                                                                                                                                                                       5
         1.7.      SEDIMENT CONTROL.                                                                                                                                                                                       5
         1.8.      EROSION CONTROL                                                                                                                                                                                         5
2        SITE DESCRIPTION                                                                                                                                                                                                  6
         2.1.      LOCATION AND OPERATIONS                                                                                                                                                                                 6
         2.2.      TOPOGRAPHY                                                                                                                                                                                              6
         2.3.      CLIMATE                                                                                                                                                                                                 7
         2.4.      MASTERPLAN                                                                                                                                                                                              7
3        EXISTING STORMWATER MANAGEMENT                                                                                                                                                                                    9
         3.1.      RECOMMENDATIONS FOR CURRENT STORMWATER MANAGEMENT                                                                                                                                                       9
4        PROPOSED STORMWATER MANAGEMENT                                                                                                                                                                                    10
         4.1.      SOUTHERN CATCHMENT (SW5)                                                                                                                                                                                10
         4.2.      NORTHERN CATCHMENT (SW2 & SW4)                                                                                                                                                                          10
                   4.2.1.       MANAGEMENT OF NUTRIENTS FROM GREEN WASTE AREA                                                                                                                                              12
                   4.2.2.       DETAILED DESIGN                                                                                                                                                                            12
5        SITE INSPECTION AND MONITORING                                                                                                                                                                                    13
6        REFERENCES                                                                                                                                                                                                        14
APPENDIX A STORMWATER STAGING AND OPTIONS PLANS                                                                                                                                                                            15
APPENDIX B SW5 DESIGN REPORT                                                                                                                                                                                               16
APPENDIX C CONCEPT EROSION AND SEDIMENT CONTROL PLAN                                                                                                                                                                       17
APPENDIX D SW2 HES BASIN CONCEPT SIZING                                                                                                                                                                                    18




TABLE OF FIGURES
FIGURE 1 - SITE LOCALITY PLAN (SOURCE GOOGLE) ...................................................................................................................................................................... 1
FIGURE 2 – AERIAL PHOTOGRAPHY AND DISTURBED AREAS (SOURCE: NEARMAPS, IMAGE DATE 13-11-21) ..............................................................6
FIGURE 3 –AVERAGE ANNUAL RAINFALL FOR EUMUNDI CRESCENT ROAD ......................................................................................................................... 7
FIGURE 4 – MASTERPLAN YEARS 1-5 (SOURCE: ATC WILLIAMS) ................................................................................................................................................. 7
FIGURE 5 – MASTERPLAN YEARS 6-10 (SOURCE: ATC WILLIAMS) ..............................................................................................................................................8
FIGURE 6 – EXISTING DRAINAGE REGIME...........................................................................................................................................................................................9
FIGURE 7 – EXISTING HES BASIN OUTLET AND FLOOD LEVELS ................................................................................................................................................ 10
FIGURE 8 – NORTHERN OUTFLOWS (PROPOSED HES BASIN) ....................................................................................................................................................11
FIGURE 9 – PROPOSED HES BASIN OUTLET AND FLOOD LEVELS ............................................................................................................................................ 12
FIGURE 10 – FLOATING WETLAND INSTALLED AT SCC LANDFILL ............................................................................................................................................ 12


TABLE OF TABLES
TABLE 1 – SURFACE WATER RELEASE LIMITS .....................................................................................................................................................................................3




Environment. Engineering. Education.                                                                                                                                                                                           PAGE ii