Attachment 8 - Interim Stormwater Management Plan - TOPO · 132005.638.06

                                                                                                                                                                                                                          FOREBAY LENGTH                                                                                   MAIN CELL LENGTH

LEGEND:                                                                                                                                                                                                                                                      LEVEL SPREADER
                                                                                                                                                                                                                                                                                                                                                             DECANT SKIMMER
                                                                                                                                                                                                                                                                                                    MAXIMUM                                                  FROM TOP OF
                                                                                                                                                                                                                          DRAIN INVERT MIN.                  CREST MIN. 0.2m
                                                                                                                                                                                                                                                                                                    WATER                                                    WATER COLUMN
                                                                                                                                                                                                                                                             ABOVE SPILLWAY                                                                                                                                             SPILLWAY CREST 12.80
           PAD FALL                                                                                                                                                                                                       0.2m ABOVE LEVEL
                                                                                                                                                                                                                          SPREADER                           CREST                                  LEVEL
                                                                                                                                                                                                                                                                                                                                                                                              0.3m (MIN)
                                                                                                                                                                                                     13.40        13.20                              13.00
   11.40   EXISTING LEVEL                                                                                                                                                                                                                                                                                                                                                                                                          HIGH FLOW
                                                                                                               FLOOD LEVELS PROVIDED BY NSC:                                                                                                                                                                                              FLOC SETTLING DEPTH (DF)                                                                 (OVER
                                                                                                                                                                                                                                                                                   SETTLING ZONE DEPTH (DS)     11.80 - 12.80                                                                                                      SPILLWAY)
                                                                                                               Q1 - 12.43
  11.42    PROPOSED LEVEL                                                                                      Q2 - 12.44                                                                                                                                                               FREE WATER ZONE (DFF)             11.40 - 11.80                                            DEPTH (D11.80
                                                                                                                                                                                                                                                                                                                                                                                            T)
                                                                                                                                                                                                                                                                                                                           SEDIMENT STORAGE DEPTH (DSS) 11.00 - 11.40                                                           11.56
                                                                                                               Q10 - 12.51
           CLEAN WATER DRAIN                                                                                   Q100 - 12.59                                                                                                                                                                                                                                                                        DECANT
                                                                                                                                                                                                                                                                                                                                                                                                                           LOW FLOW
                                                                                                                                                                                                                                                                                                                                                                                                   STRUCTURE
                                                                                                               Q100 CC - 12.64                                                                                                                                                                                                                                                                                             OUTLET


           DIRTY WATER DRAIN                                                                                                                                                                                                                                                   TYPE A SEDIMENT BASIN TYPICAL SECTION (nts)
                                                                                                                                          11.42

           PROPOSED BASIN                                                                PROPOSED OUTLET RL 11.56

                                                                                                                                                                                                                                                                                                     ALL DRAINS:
                                                                                                                                                                                                                                                                                                     - 10% AEP SIZE
                                                                                                                                                                   11.40                                                                                                                             - 0.5% LONG. FALL
                                                                                                                                                                                                                                                                                                     - CONCRETE LINED
                                                                                                PROPOSED SPILLWAY RL 12.80                                                                                                                                                                           - 1m BASE
                                                                                                                                                                                                                                                                                                     - 1 IN 2 SIDE SLOPES
                                       9726




                                                                                                                                    14.15 INVERT
                                                                                                                                    14.80 TOB
                                                                                                                                                                                                                                      13.40 INVERT
                                                                                                                                                                                                                                      14.40 TOB                                                         DW3
                                                                   9724
                                                                                                                                                                 11.60             DW2
                                                                                         9725




                                                                                                                                                                                                                                                                                                                                                                          14.25 INVERT
                                                                                                                                                                                                                                                                                                                                                                          14.70 TOB
                                                                                                                                                                                                                                                                                    13.60
                                                                                                                                                                                                         12.00    13.00                                                                                                                                                 14.10



                                                                                                                                                                                                                                                                                                                                                                                                              UPSTREAM DRAINAGE
                                                                                                                                                                                                                                                                                 0.5% FALL                                           14.00                        DW4                                         DIRECTED TO DW4
                                                                                                                                                                                                                                          13.60

                                                                                        EDGE DRAIN AT 0.1%                                                                                                                     15.00
                                                                                                                                                                                                                                                                                      14.00
                                                                                        GRADE TO LIMIT FILL
                                                                                                                                                                                                             PAD LEVELS ARE INDICATIVE ONLY AND WILL                                                                                                                                                        EXISTING DRAINAGE
                                                                                                                                                                                                             NEED TO BE REFINED WITH DETAILED DESIGN                                                                                            14.40                                                       TOO DEEP - NEED TO
                                                                                                                                                                                    0.5% FALL                                                                                                                                                                        14.60 INVERT
                                                                                                                                                                                                                                                                                                                                                                                                            RAISE DRAINAGE -
                                                                                                      9728




                                                                                                                          DW1                                                                                                                                                                                                                                        15.05 TOB
                                                                                                                                                                                                                                13.50                                                                                                                                                                       REFER TO SHEET 2



                                                                                 9729




                                                                                                                                                                                                                                             RIDGE                                                                                                    9600




                                                                                                                                                                                                                                        13.50

                                                                                                                                                                                                 13.70
                                                                                                                                                         14.25
                                                                                                                                                                                                                                                        14.10
                                                                                                                                                                                                                                          13.80
                                                            9731
                                                            9730




                                                                                                                                                                                                                  13.70



                                                                                                                                                                                  14.50
                                                                                                                                                                                                                                                             15.50

                                                                                                                                        14.35 INVERT
                                                                                                                                        14.70 TOB




                                                                          9720




                                                                                                                                                                                                                                                                                               CLIENT                                                                 PROJECT
                                                                                                                                                                         0                  30                                                                   COPYRIGHT C                                        NOOSA COUNCIL                                                         NOOSA LANDFILL - RRA BASIN
                                                                                                                                                                                                                                                             TOPO GROUP PTY LTD
                                                                                                                                                                                                                                                                                               DRAWN                   DESIGNED              DATE                     DRAWING TITLE

                               B       REVISION FOLLOWING CLIENT COMMENTS                                                          KR             29/04/24                   SCALE 1:1500                                                         THIS DOCUMENT MAY NOT BE COPIED OR                    KR                      KR              16/04/24                               CONCEPT DRAINAGE AND BASIN
                                                                                                                                                                                                                 ISSUED FOR USE                   TRANSMITTED IN ANY FORM OR BY ANY
                               A       ORIGINAL ISSUE                                                                              KR             16/04/24                                                                                        MEANS IN PART OR IN WHOLE WITHOUT
                                                                                                                                                                                                                                                                                               RPEQ / SIGNATURE (IF REQUIRED)                                                         CONCEPT DRAINAGE - SHEET 1 OF 2
                                                                                                                                                                                            A3                                                    THE WRITTEN CONSENT OF TOPO GROUP                                                                                   PROJECT No                           DRAWING No                          REVISION
                            REVISION          DESCRIPTION                                                                     APPROVED BY         DATE
                                                                                                                                                                     NORTH
                                                                                                                                                                                                                                                                PTY LTD.                                    CPESC - 5395, RPEQ - 15954                                             24-0078-C                              D02                       B