stormwater mgJ00300R1V1_25_Kauri_St_Cooroy_Complete · MCU18/0165

25 Kauri St Cooroy




5.4      Construction Phase Stormwater Management
The following points provide general guidance on the management of stormwater during the
construction phase. Detailed Erosion and Sediment Control Management Plans should be
provided during the operational works application stage in accordance with International Erosion
Control Association Australia (IECA) Guidelines.

Sediment control should be able to be achieved by applying the following best practice sediment
and erosion control management during the construction phase of the project:

      1. Establish defined, stabilised entry/exit point for the site works;
      2. Construct a shake-down grid at the entrance to facilitate the removal of sediment from
         trucks leaving the site. The access road extending from the end of the existing road or
         kerb to the grid should comprise a 150-200mm deep pad of 40mm crushed rock;
      3. Install sediment fences along the lower boundaries of the site;
      4. Install suitably sized sediment basins at locations of concentrated flow (ie drainage
         discharge points/future bio-retention basins);
      5. Install bins and/or wind-proof litter areas on-site to minimise the dispersion of gross
         pollutants;
      6. Maintain on site spare materials necessary for the emergency repair of all erosion control
         devices. This includes silt fences, clean crushed rock for reapplication to the entrance
         road and for replacement of rock within temporary drainage channels;
      7. Following each day’s construction works, ensure that any material on road surfaces is
         swept from the road, and not permitted to be washed down the gutters and piped
         drainage systems.
      8. Quality of pooled water within sediment basins are to be monitored prior to dewatering,
         sufficient time should be given to allow sediment to settle (possible with the assistance of
         a suitable flocculent if necessary) &/or filtering during pumping operations.
      9. Final establishment of bioretention basins at outlets should not occur until full stabilisation
         of upstream catchment has occurred; preferably these should be temporarily turfed/grass
         seeded during the maintenance period while dwelling construction is occurring.

It shall be the responsibility of the developer, through their principal contractor, to ensure that
temporary sediment and erosion controls are installed and maintained correctly.




J00300R1V1                                                                                           16