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Gross Pollutant Trap Survey

Ring your local council to find out the name of the company that cleans out the cities gross pollutant traps (GPTs). Arrange a visit to view the clean out of a local GPT.

Take part in the webcasts for Sustainable Water use - Monday March 6th.

more information ....


What you will need:

  • Some tongs & long sticks
  • Gum boots
  • A note book
  • A map of the local run-off catchment or watershed

Your job, should you choose to accept it, is to take note of the kinds of rubbish observed. Record the numbers of each kind of litter using tongs.

Collate your information.

A Gross Pollutant Trap
A Gross Pollutant Trap

Looking at the list of some pollutants that can contaminate the ocean choose one you have observed. Consider what set of circumstances might cause that pollutant find its way into the sea.

Primary students:

  • Prepare a chart of the pollutants you have observed and illustrate it.

Secondary students:

  • Prepare a graph of the pollutants observed. Did the GPT collect all of the pollutants?
  • Develop a strategy for educating, regulating and then enforcing stormwater quality improvements.
  • Research and write either a media release for a newspaper or design a public service announcement to be aired on television.

Contents of a Gross Pollutant Trap in the
City of Casey, Victoria
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