Erosion and sediment/debris movement offsite

Preventing soil and sediment erosion

The environmental impact of sediment run-off from worksites such as mud, sand and soil can be significant if appropriate controls are not in place.

If sediment is not controlled it can enter the stormwater drainage system and impact waterways including Sydney Harbour.

Sediment can also block street stormwater drainage pits increasing the risk of localised flooding.

Builders and contractors are responsible for implementing strategies and measures to prevent soil erosion and sediment moving off building sites. This includes soil and debris being tracked on truck wheels into public areas.

It is an offence to allow any substance other than rainwater to enter a stormwater drainage system. This includes the pumping of rainwater collected in excavations into the stormwater drainage system, unless specifically approved by the City. 

If pollution occurs a builder or contractor is required by law to notify the City. This allows for appropriate steps to be taken to minimise any harm to the environment and impacts on the stormwater drainage system.

Where sites are not managed properly to control sediment our construction regulation team will attend to check the controls and where necessary issue directions to the builder to rectify the issues.

Where soil or mud is being tracked offsite by trucks or there is spillage of concrete onto the roadway from pumping operations (where adequate surface protection is not in place), City rangers will investigate and take steps to deal with the problem.

This will include issuing clean-up directions. Fines may also be issued.

Last updated: Tuesday, 5 February 2019