Sediment ponds and gross pollutant traps

holmesglen sediment pond after desilting works

Sediment ponds and gross pollutant traps play an important role in treating stormwater runoff from our urban catchment – capturing sediment, litter and debris that washes off our streets and filtering runoff before it enters our creeks and wetlands.

From time to time, the sediment and pollutants that accumulates in these ponds and traps requires removal before it washes further into the wetland and clogs the system.

WORKS CURRENTLY UNDERWAY

Bogong Reserve, Glen Waverley (replacement of gross pollutant trap)

When: November – December 2024

What: The existing gross pollutant trap will be removed and replaced with a new trap. There will also be a secondary treatment over the existing 825mm diameter pipe, between the wetlands and existing gross pollutant trap, to improve the quality of the water discharging into the wetlands.

SCHEDULED WORKS

Gardiners Creek Reserve, Burwood (sediment removal and associated works)

When: January – April 2025

What: Accumulated sediment, litter and debris will be removed from the pond at the start of the wetland system. We’ll be re-stabilising the pond edges, installing a new clay layer and rock work, and installing new stormwater drains. All disturbed areas will be reinstated with topsoil and grass seed.

Impacts: While the works will have no impact on access to residential properties, the Gardiners Creek shared user path will be closed between Highbury Road and the Ashwood Drive access for the duration of the works. Traffic management will be in place to guide vehicles, pedestrians and bikes past the work site to allow the safe movement of heavy machinery and trucks. A temporary ‘No Stopping’ restriction will be established along Chandler Grove to facilitate the access of heavy construction vehicles and machinery to the work site. The existing 2P, 8am-7pm Mon-Fri and Permit Zone, 7pm-10pm Mon-Fri parking restrictions will be changed to a ‘No Stopping’ restriction on the north side of Chandler Grove (creek side) between Montpellier Road and the Gardiners Creek access point, opposite 12 Chandler Grove.

COMPLETED WORKS

Holmesglen Reserve, Ashwood (sediment removal and associated works)

When: completed May 2024

What: Accumulated sediment, litter and debris was removed from the pond at the start of the wetland system, stockpiled on site for drying and then removed by truck for disposal. Pond edges were re-stabilised, with some replanting to come.