One of the ways the Penlink project team is caring for the environment is through responsible erosion and sediment control.

The team is committed to environmental stewardship and takes the impact on local flora and fauna very seriously.

There are currently 17 operational erosion and sediment control devices across the construction sites, and they provide important solutions to protect the area, as some of the devices are sediment retention ponds and decanting earth bunds.  

In addition to these, the team is using diversion bunds and channels, silt fences, drop-out pits, sediment treatment tanks, stabilised construction site entrance ways and wheel washes.

They are focusing on minimising open areas to reduce erosion, and are constantly stabilising bare earth using hay, grass, aggregate and sometimes cloth.

When it rains, the runoff flows into the pond and mixes with a flocculant to speed up settlement of sediment particles. 

It then flows into the pond where further settlement occurs. 

One of the sediment retention ponds on the Penlink construction site.

Afterwards, it discharges out the decanting systems, which skims the cleaner water off the surface of the pond.

Retained sediment can then be properly managed by the Penlink environmental team. 

The water is tested during and after the rain to check if the pond is working efficiently.