OPW052025 Report - Part 2

Performance Outcomes                                              Acceptable Outcomes                                                                            Response

PO12                                                              AO12.1
Development protects in-stream ecology by maintaining pre-        Where run-off from or within the site passes through or drains to    This item is not applicable as no changes to the flow regimes
development low flow discharge regimes and maintaining fish       natural channels, waterways or wetlands, development protects in-    are proposed
                                                                  steam ecology by maintaining pre-development low flow
passages.
                                                                  discharge regimes in accordance with the frequent flow
                                                                  management objectives in PSP6 Engineering Design Standards -
                                                                  Roads, drainage and earthworks

                                                                  AO12.2
                                                                  Instream structures such as roads, bridges, culverts, and other
                                                                  stormwater infrastructure do not cause barriers to fish passage
                                                                  and facilitate the movement of terrestrial and aquatic fauna along
                                                                  waterway corridors.

                                                                  AO12.3
                                                                  Benthic substrate retains a continuous grade with the direction
                                                                  of flow consistent with the natural bed profile.
PO13                                                              AO13.1
Development is designed and constructed to maintain surface       The location and form of stormwater discharge points do not alter    This item is not applicable as no changes to the flow regimes
and ground water balances that sustain the environmental values   the pre-development hydrology of receiving surface water or          are proposed
of water dependent ecosystems, including downstream aquatic,      groundwater.
riparian, wetland and terrestrial ecosystems.
                                                                  AO13.2
                                                                  Developments located on groundwater recharge or discharge
                                                                  areas are designed and managed in accordance with a
                                                                  groundwater recharge and discharge management plan prepared
                                                                  by a suitably experienced and qualified groundwater hydrologist.
                                                                  The groundwater recharge or discharge must demonstrate that
                                                                  the development does not affect groundwater balances beyond
                                                                  the property boundaries.

                                                                  Editor's Note— PSP6 Engineering Design Standards - Roads,
                                                                  drainage and earthworks provides guidance on prepare a
                                                                  groundwater recharge and discharge plan.