Operational Works Report_RosesRd Access 29 April2025

                                                                                                        Callaghan & Toth
4.2.3 Water Quality and Drainage Code
The works generally comply with the Water Quality and Drainage code, as detailed below in Tables
7 and 8 below.

Table 7:               Response to Table 9.4.8.3 – Stormwater drainage design

Performance Outcomes                                Acceptable Outcomes               RESPONSE – SW Drainage
                                                                                      Design
Stormwater drainage design                                                            Complies with PO1
PO1                                                 AO1
The development and its                             A stormwater management plan is   The stormwater drainage design for
stormwater management system                        prepared consistent with PSP6     the proposed driveway and culvert
is planned and designed having                      Engineering Design Standards -    crossing includes:
regard to:                                          Roads, drainage and earthworks.       • Table drains along the
  1. the natural features of                                                                  driveway,
      the site;                                                                           • Stabilised drainage outlet
  2. the need to avoid impacts                                                                points into Skyring Creek
      and potential risks                                                                 • Two RCP’s under the
      to ecologically important                                                               driveway to accommodate
      areas;                                                                                  overland flow paths
  3. the likely effectiveness of
      erosion and sediment                                                            ESC measures will be implemented
      control and stormwater                                                          during works as per plans.
      drainage measures during                                                        Stabilisation on site will occur
      rainfall events during and                                                      following works with appropriate
      post construction; and                                                          methods include grass seeding,
  4. the need to protect                                                              turfing and planting creek banks with
      environmental values and                                                        native species.
      water quality of receiving
      waters both during and post
      construction.
PO2                                 AO2.1                                 Complies to PO2
Stormwater drainage                 Stormwater drainage planning,
infrastructure is planned,          design and construction is in         The stormwater drainage is
designed and constructed to:        accordance with PSP6 Engineering
                                                                          designed to accommodate overland
                                    Design Standards - Roads, drainage
  1. incorporate allowance for      and earthworks and the latest         flow on site and to maintain existing
     increased flood risk and tidal version of the QUDM.                  flowpaths and discharges to Skyring
     inundation through pipework AO2.2                                    Creek.
     as a result of cilmate change The stormwater drainage system
     and sea level rise;            connects to a lawful point of
  2. ensure the development is      discharge in accordance with PSP6
     adequately drained; and        Engineering Design Standards -
  3. ensure stormwater is           Roads, drainage and earthworks.
     managed and lawfully           AO2.3
     discharged without altering Stormwater flows discharging from
     stormwater drainage            the development are demonstrated
     characteristics external to    to be consistent with pre-
     the site.                      development characteristics.
                                    AO2.4
                                    Development provides for the
                                    management of stormwater to
                                    incorporate appropriate allowance
                                    for climate change impacts
                                    (including rainfall intensity and sea
                                    level rise), in accordance with PSP6




Operational Works Application – Supporting Information                                                  April 2025
36 Roses Road, Federal                                                                                          13