E - Engineering Code Assessment.pdf

STORMWATER QUALITY AND PROTECTION OF RECEIVING WATERS


 Performance Outcomes              Acceptable Outcomes                  Response


                                  AO11.5
                                  Floodplain management is
                                  designed in accordance with the
                                  Framework for the Integration of
                                  Flood and Stormwater
                                  Management into Open Space
                                  published by Healthy Waterways
                                  Water by Design (version current
                                  at the time of development
                                  application)
PO12                              AO12.1                                Not applicable.
Development protects in-          Where run-off from or within the
stream ecology by maintaining     site passes through or drains to
pre-development low flow          natural channels, waterways or
discharge regimes and             wetlands, development protects
maintaining fish passages.        in-steam ecology by maintaining
                                  pre-development low flow
                                  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                                Complies.
Development is designed and       The location and form of
constructed to maintain surface   stormwater discharge points do        Stormwater is lawfully
and ground water balances that    not alter the pre-development
                                                                        conveyed to Margit
sustain the environmental         hydrology of receiving surface
values of water dependent         water or groundwater.                 Crescent, with small areas
ecosystems, including                                                   discharging as sheet flow
downstream aquatic, riparian,     AO13.2                                across the boundary to
wetland and terrestrial           Developments located on               neighbouring properties as
ecosystems.                       groundwater recharge or               per the existing case.
                                  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.