Stormwater Management Plan 12_05_26

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      EXISTING LEGEND
                                                                                                                                                                                                                   104                                                                                                                                                                                                                                                                                                                                                   SUBJECT PROPERTY BOUNDARY
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                4.00     MAJOR CONTOUR
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         MINOR CONTOUR
                                                                                                                                                                                                                                                                                                                                                                                                                                                    EXISTING BIO BASIN PROVIDES
                                                                                                                                                                                                                                                                                                                                                                                                                                                    WATER QUALITY TREATMENT FOR                                                                                          SEWER MAIN
                                                                                                                                                                                                                                                                                                            1/B                                                                                                                                     DEVELOPMENT. REFER OPW/25/0057                                                                                       WATER MAIN
                                                                                                                                                                                    2/EX                                                                                                                                                                                                                                                                                                                                                                                 STORMWATER
                                                                                                                                                                                                                                                                           104




                                                                                                                                                                                                                                                                                                                                                                                                                                         10
                                                                                                                                                                                                                                                                                                                                             104




                                                                                                                                                                                                                                                                                                                                                                                                                                           4
                                                                                                                                                                                                    105




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      PROPOSED LEGEND
                                                                                                                                                                                                           SUBSOIL DRAIN TO CONNECT
                                                                                                                                                                                                           INTO RETAINING WALL DRAINS                                                                                                                                                                                                                                                                                                                                    CONCRETE DRIVEWAY CROSSOVER
                                                                                                                                                                                                           AND DISCHARGE TO PIT
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         INTERNAL CONCRETE DRIVEWAY

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         CONCRETE PATH

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         DWELLING

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         RETAINING WALL - CONCRETE SLEEPER
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         RETAINING WALL - GROUTED ROCK
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         RETAINING WALL - BLOCK
                                                                                                                                                                                                                                                                                  PROPOSED DWELLINGS                                                                                                                                                                                                                                                                     RETAINING WALL - LANDSCAPE
                                                                                                                                                                                                                                                                                      FFL 105.95m                                                                                                                                                                                                 CONNECT TO EXISTING                                                    ACO K200 GRATED DRAIN BOLT DOWN (OR APPROVED EQIVALENT)
                                                                                                                                                                                                                                                                                                                                                                                                                                                  PUMP ROOM                             1/EX      STORMWATER PIT
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              50.00      MAJOR CONTOUR 1.0m INTERVAL
                                                                                                                                                                                                                                                                                                                                                                                                                                                  FFL 105.78m
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         MINOR CONTOUR 0.25m INTERVAL

                                                                                                                                                                                                                                                                                                                                                                                                                                                        5/A                                                                                           NOTES:
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      1.     FOR GENERAL & STORMWATER NOTES REFER DRG C-011.




                                                                                                                                                                                                                                                                                                          2
                                                                                                                                                                                                                                                                                                       SP348613
                                                                                                                                                                                                                                                                                                                                                                                                  INDICATIVE STORMWATER PITS,                                                                                                                                                              PIT SIZE
                                                                                                                                                                                                                                                                                                                                                                                                  REFER HYDRAULIC DESIGN                                                                                                                                                          REFER TO IPWEA DS-050
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             0-1.0 DEPTH        600mm x 600mm




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   10
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             1-1.5 DEPTH        600mm x 900mm




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    5
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             0-2.0 DEPTH        900mm x 900mm
                                                                                                                                                                                                                                                            LIFT                                                                                                                                                                                                                                                                                                            2.0 GREATER       STANDARD MH WITH
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               APPROVED INLET
                                                                                                                                                                                                                                                                                                                                                   ROOF WATER STUB, TO RETENTION                                                                                    LANDSCAPE PITS TO
                                                                                                                                                                                                                                                                                                                                                   PRIOR TO OVERFLOWING TO                                                                                          CONNECT DIRECTLY
                                                                                                                                                                                                                                                                                                                                                   DETENTION TANKS                                                                                                  INTO DETENTION TANK
                                                                                                                                                                                                                                                                                                                                     4/A




                                                                                                                                                                                                                                                                                                                                 SL 105.72                                                                                                      SL 105.62




                                                                                                                                                                                                                                                            RETENTION TANKS TO OVERFLOW INTO
                                                                                                                                                                                                                                                            DETENTION TANKS VIA 300Ø REFLUX                                                            16 x 9.5kL TANKS, 8 TANKS (76kL)
                                                                                                                                                                                                                                                            VALVE. 50mm FROM TOP OF TANK                                                               FOR REUSE AND 8 TANKS (76kL)
                                                                                                                                                                                                                                                                                                                                                       FOR ON SITE DETENTION                                                                                                    CONSTRUCT STRIP DRAIN AT
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                BOUNDARY IN ACCORDANCE WITH
                                                                                                                                                                                                                                                                                                                                                                                                                                             BIN                                MANUFACTURERS GUIDELINES
                                                                                                                                                                                                                                                                                                                                                                                                                                            STORE
                                                                                                                                                                                                                                                                                                                                                                                                                                                                          3/A
                                                                                                                                                                                                                                                                                                                                                                                                                                         6x1100L BINS
                                          Filename: C:\PROJECTS\240444 - SOCIAL HOUSING - 62 LAKE MACDONALD DRIVE, COOROY\3.0 CAD\DRAWINGS\OPW\240444-OPW-C-400.DWG




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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         NEW ROAD
Last Plotted: 2026-04-24 9:24 AM




                                                                                                                                                                                                                                                                                                                                                     CUT-OFF DRAIN TO CAPTURE LOW
                                                                                                                                                                                                                                                                                                                                                     FLOWS AND DIRECT TO STORMWATER
                                                                                                                                                                                                                                                                                                                                                     PIT. HIGH FLOWS BYPASS TO NEW ROAD
Last saved by: JACKHARRISON(2026-04-24)




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                                                                                                                                                                                                     113


                                                                                                                                                                                                                                                                                                          1/A                                                                                                                                                       2/A



                                                                                                                                                                                                                                North Point   Scale                                        Horiz. Datum         Client                                   Consultant                                                                                     Project                                                                  Drawing
                                                                                                                                                                                                                                                                                             LOCAL                                                                                                                                                                                                       Drawn              JH                                                                   Project No.           Drawing No.           Rev No.
                                                                                                                                                                                                                                                                                                                                 COAST2BAY                                                                                                                              SOCIAL HOUSING                                                                STORMWATER
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         Design             JH
                                                                                                                                                                                                                                                                                                                               HOUSING GROUP                                                                                                                      OPERATIONAL WORKS - CIVIL                                                              PLAN
                                                                                                                                                                       C MINOR UPDATE TO SET                  24.04.26 LS
                                                                                                                                                                                                                                                 0m
                                                                                                                                                                                                                                                 A1 1:125
                                                                                                                                                                                                                                                                   3.125         6.25
                                                                                                                                                                                                                                                                                           Vert. Datum
                                                                                                                                                                                                                                                                                              AHD
                                                                                                                                                                                                                                                                                                                                                                                                                                                                   62 LAKE MCDONALD DRIVE,                Check             LS
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  240444              OPW-C-401               C
                                                                                                                                                                       B FOR TENDER                           16.04.26 LS                                                                   RL Datum                                                                                                       CIVIL | STRUCTURAL | GEOTECHNICAL                           COOROY, QLD, 4563                  Approved                    Approved Date        Signed                                                                    Sheet
                                                                                                                                                                       A FOR APPROVAL
                                                                                                                                                                      Rev           Revision Description
                                                                                                                                                                                                              09.04.26 LS
                                                                                                                                                                                                                Date Approved
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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          RPEQ      21223
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      16.04.26                                                  Status   FOR TENDER
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     Size     A1