Proposed Gross Pollutant Trap

Council is proposing to install a Gross Pollutant Trap (GPT) off Derribong Place on Larool Creek, Thornleigh. The aim of this work is to improve the ecological health of Larool Creek by improving water quality through the removal of litter, sediments and vegetation debris.

Please refer to the concept design plan for details of proposed works.

If you wish to provide comments on the proposal, please title your submission “Proposed Gross Pollutant Trap - Derribong Place, Thornleigh - Reference No F2023/00152

Have your say in three ways:

  • completing the form below
  • emailing hsc@hornsby.nsw.gov.au
  • writing to the General Manager, Hornsby Shire Council, PO Box 37, Hornsby 1630.

Exhibition closes: Monday, 7 October 2024.