Attachment 3 - Revised Engineering Report (rec. 7.04.2025) MCU24-0165 & OPW24-0222

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Best practice measures shall be utilised during the construction phase to minimise the potential impacts
of the pollutants mentioned above. Detailed Erosion and Sediment Control Management Plans should
be developed in conjunction with the Operational Works design prior to construction works commencing
in accordance with the International Erosion Control Association (IECA) - "Best Practice Erosion and
Sediment Control (BPESC) document" and overseen by a Certified Professional in Erosion and
Sediment Control (CPESC) or Registered Professional Engineer Queensland (RPEQ).
Through their principal contractor, the developer shall be responsible for ensuring that temporary
sediment and erosion controls are installed and maintained correctly.
5.6.1.1 Pollutants
The pollutants that would typically be generated during the construction of the proposed development
are outlined in Table 2.
TABLE 2: TYPICAL CONSTRUCTION PHASE POLLUTANTS

 Pollutant               Source
 Litter                  Paper, construction packaging, food packaging, cement bags, offcuts
 Sediment                Unprotected exposed soils and stockpiles during earthworks and building
 Hydrocarbons            Fuel and oil spills, leaks from construction equipment
 Toxic Materials         Cement slurry, asphalt prime, solvents, cleaning agents, wash waters e.g.
                         from tile works)
 Ph Altering             Acid sulphate soils, cement slurry
 Substances
5.6.1.2 Potential Impacts
Construction activities can have a potential impact on water quality. Removal of vegetation, earthworks
and changes to drainage patterns can result in erosion and sediment being washed into waterways.
This can impact the physical-chemical parameters of the receiving water, the decline in the health of
aquatic ecosystems, and overall aesthetics. The potential impacts on the development site's
surrounding receiving waters will be minimised during the construction phase with typical measures
outlined below. These measures should be adequately detailed on erosion and sediment control plans
as part of the development's Operational Works application.
5.6.1.3 Performance Objectives
The amount of runoff traversing and discharging from the site while under construction should be kept
to a minimum. This will restrict soil erosion and mobilisation of sediments and pollutants through and
off the site. During the construction phase, stormwater runoff at discharge points shall comply with the
objectives detailed in QLD SPP (July 2017).
5.6.1.4 Control Measures
The following are typical treatment measures that should be implemented before the commencement
of any construction works. Detailed erosion and sediment control procedures shall be based on the
erosion and sediment control plans lodged at the Operational Works phase.
5.6.1.5 Maintenance
Maintenance of erosion and control treatment measures (such as sediment fences) will be undertaken
if it is observed that they have not been properly installed or the capacity of the measure falls below
75%.
5.6.1.6 Minimise Disturbance Area
Clearing of land is to be minimised to areas planned to be actively under construction in the near term
(e.g. within the next 3-6 months).




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