Attachment D amended SWMP

6        Stormwater Management (Quality)
 6.1     Water Quality Objectives

6.1.1    Construction Phase
   Control measures to be put in place to protect downstream properties from nuisance flows.
   Maximum of 50mg/L of total suspended solids present in run-off discharged from the site during the
    construction stage, and a pH between 6.5 and 8.5

6.1.2    Operational Phase
The proposed development is required to meet or exceed the stormwater management design objectives under
the State Planning Policy (SPP) and Council’s planning scheme and guidelines. The following minimum load
reduction targets, in mean annual load from unmitigated development, are required to be achieved by the
development:
   Total Suspended Solids (TSS)               80% reduction of average annual load
   Total Phosphorus (TP)                      60% reduction of average annual load
   Total Nitrogen (TN)                        45% reduction of average annual load
   Gross pollutants (greater than 5mm)        90% reduction of average annual load
In addition to the above, the following permanent stormwater quality best management practices have been
identified for the operational phase of the development to assist in the protection of water quality.
   Rubbish Bins provided on site;
   Street sweeping of pavement areas;
   Maintenance of all stormwater quality improvement devices.




 BR210522_SBSMP_Rev5.docx                                                                                Page 12 of 25