Engineering Code Assessment Report

                                           incorporate appropriate allowance for climate change impacts
                                           (including rainfall intensity and sea level rise), in accordance
                                           with PSP6 Engineering Design Standards – Roads, Drainage
                                           and Earthworks.
PO3                                        AO3.1                                                              The Development will
Stormwater drainage infrastructure         Stormwater drainage infrastructure meets the desired standards     Comply
conveys run-off in a manner that           of service for roads functionality set out in PSP6 Engineering
allows roads to deliver desired            Design Standards - Roads, Drainage and Earthworks.
standards of service appropriate to the
local conditions and local stormwater
drainage characteristics.
PO4                                        AO4.1                                                              The Development will
Stormwater infrastructure is compatible    The location, design and construction of stormwater drainage       Comply
with existing infrastructure, allows for   structures is in accordance with PSP6 Engineering Design
easy access for the ongoing                Standards - Roads, drainage and earthworks.
maintenance by Council, is cost
effective across its design life.          AO4.2
                                           Where infrastructure is located on private land an easement is
                                           dedicated over the infrastructure in accordance with PSP6
                                           Engineering Design Standards - Roads, drainage and
                                           earthworks.

                                           AO4.3
                                           Any alterations or repairs to infrastructure as a result of
                                           the development are made at no cost to Council.

                                           AO4.4
                                           Development avoids stormwater inflow and infiltration to the
                                           sewer infrastructure network.

                                           AO4.5
                                           Stormwater infrastructure is designed to minimise maintenance
                                           costs and the requirement for specialized equipment for
                                           maintenance techniques.
PO5                                        AO5.1                                                              The Development will
Stormwater drainage infrastructure is      Stormwater drainage infrastructure avoids crossing waterways,      Comply
aligned to avoid crossing waterways,       wetlands drainage lines and ecologically important areas or
wetlands, drainage lines and               follows the edge of existing disturbed areas.
ecological important areas, or where it
is demonstrated this is unavoidable,       AO5.2
disturbed areas are reinstated and         Stormwater drainage infrastructure is co-located with other
revegetated upon completion of works.      infrastructure within a combined utility corridor where
                                           appropriate.

                                           AO5.3
                                           Temporary vehicular crossings of waterways must be designed
                                           and constructed to be consistent with the current International
                                           Erosion Control Association Best Practice Book Series.
Stormwater Quality
PO6                                                                                                           The Development will
Development is located, designed,          AO6.1                                                              Comply
constructed and operated to protect        Stormwater runoff discharging into High Ecological Value waters
and enhance environmental values           as a result of development causes no increase in gross
and water quality of waterways,            pollutants, total suspended solids, total phosphorous or total
wetlands, lakes, ground waters and         nitrogen compared to a pre-development scenario.
drainage systems.
                                           AND

Editor’s note: ENVIRONMENTAL               AO6.2
VALUES OF WATERS AND WATER                 All stormwater runoff is treated to achieve maximum removal of
QUALITY OBJECTIVES ARE                     nutrients, gross pollutants and suspended solids as determined
PRESCRIBED IN SCHEDULE 1 OF                by cost to efficiency ratios. (e.g. bioretention basins must be
THE ENVIRONMENTAL                          sized to achieve at least 80% reduction in total suspended
PROTECTION (WATER) POLICY                  solids, 60% reduction in total phosphorous, 45% reduction in
2009 AND ARE IDENTIFIED ON                 total nitrogen and 90% reduction in gross pollutants >5mm).




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