RFI - Attachment 3 - Stormwater Management Plan

                     Figure 4.7 SPP 2017 Construction Phase Stormwater Management Design Objectives

A site-specific erosion and sediment control plan shall be prepared as part of a future submission for Operational
Works approval for the development. Suitable erosion and sediment controls for the site may include:

     1. Provision of an on-site sedimentation basin to reduce sediment concentrations from site before being
        discharged into the waterway.

     2. Sediment fencing along downstream of the work areas within the site to prevent sediment from leaving the
        construction area.

     3. A shakedown area is to be installed at the construction entry/exit to the proposed development area to
        minimise sediment being transported to and from the site.

     4. Ensuring any stockpiles and construction materials are located clear of overland flow paths and contained
        using sediment fencing downstream of these areas with upstream diversion berms to protect the stockpile.

     5. Diversion of upstream catchments around any exposed areas through the use of turfed catch drains or
        similar.


          4.2.2 Erosion and Sediment Control Monitoring
The control measures described above must be maintained in an effective operational condition during the
construction works. Regular inspections should be carried out by the contractor and any defects in erosion and
sediment control devices specified for the site are to be remedied as soon as practicable. Any damage to either
temporary or permanent water quality control structures is to be immediately rectified at the contractor’s expense.
The inspection of the ESC devices is to be carried out as follows:

               1. Routine Inspection – is to be carried out daily while work is being carried out on site, or weekly
                  while works are not being carried out.
               2. Preventative inspection – to be carried out a maximum of 24 hours before rain is forecast.
               3. Reactive inspection – to be carried out within 18 hours of a rainfall event sufficient to mobilise
                  surface sediment on the site.


Project number 21020                                                                                    Page 25 of 36
File RECOR Concept Stormwater Management Report - 21020.docx, 2022-09-05
Revision 0


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