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Kingborough Sewerage Upgrade Project

Updated March 2018

Margate sewage treatment plant works as part of the Kingborough Sewerage Project

TasWater contractors are currently conducting works at the Margate sewage treatment plant, Dru Point. This work is part of the Kingborough Sewerage Project and will see this treatment plant converted to a pump station that will transfer flows to the upgraded Blackmans Bay sewage treatment plant.

The two lagoons will be drained and rehabilitated. Half of one of the drained and rehabilitated lagoons will be repurposed to be used as emergency overflow storage which may be required during extreme wet weather events and as a result of power outages. This will result in better environmental outcomes for North West Bay.

Please see below for further information on specific elements of the work:

What happens to the lagoons?

The first phase of works to the lagoons requires earthworks to prepare for de-sludging (removal of the contents of the lagoon). Over the course of approximately one week, two excavators and a tip truck will section the lagoons into smaller portions.

Each section of the lagoon will then be progressively drained and pumped into road tankers which then transport the sludge to be reused on farmland in line with Tasmanian Biosolids Reuse Guidelines 1999.

A temporary road will be created for trucks to access the plant. Trucks will enter the Dru Point area through the existing access road, travel past the plant access gate to enter the plant by an existing access point, through the double gate on the northern boundary fence.

Temporary fencing will be installed either side of a corridor between the gate in the dog walk area fence and the double gates on the plant boundary fence. Double gates either side of this corridor will allow access to the dog walking area, and enable restriction of dog movements when trucks are entering the site. This crossing will be controlled at all times during construction hours.

Conversion to a pump station

While the work to remove sludge from the lagoons takes place we are also undertaking construction to install the sewer pump station. This involves deep excavation required to install a pre-fabricated concrete well within which the pumps will operate.

Underground storage tanks

Further excavation work is required to allow the installation of two underground emergency storage tanks. These tanks will take any flows as a result of extreme wet weather events or power outage. Any additional overflow will be captured in the repurposed lagoon.

Work on the pump station and underground storage tanks will continue until approximately August 2018.

How will this work affect me?

You may notice an increase in odour while the initial earthworks at the lagoons takes place. The de-sludging works are expected to take approximately four weeks in total to complete.

As with any construction site there will be occasional inconveniences such as construction traffic, noise and dust, and we may need to utilise rock breaking equipment which will create additional noise. Please be assured we are endeavouring to complete works in a timely manner.

There will be no interruption to your sewerage service.

There will be a large increase in truck traffic between the plant and the Huntingfield roundabout while we conduct the de-sludging of the lagoons.

Access to the dog walking track around the lagoons will managed by manned traffic control. Please be assured those using the track will only be asked to wait for a short period of time while trucks access the site. We ask for your cooperation and patience whilst these important safety arrangements are in place.

Our construction contractor’s normal working hours are between 7am and 6pm from Monday to Friday and on Saturday as required. You may notice truck movements and people on site prior to 7am as they prepare for the day.

How will the area look once works are complete?

TasWater is in discussions with Kingborough Council regarding the future use of the area. At this stage the area will remain fenced once works are complete. Residents and recreational users of Dru Point will be able to use the area in the same manner as they do now.

Updated March 2018

Margate sewage treatment plant works as part of the Kingborough Sewerage Project

TasWater contractors are currently conducting works at the Margate sewage treatment plant, Dru Point. This work is part of the Kingborough Sewerage Project and will see this treatment plant converted to a pump station that will transfer flows to the upgraded Blackmans Bay sewage treatment plant.

The two lagoons will be drained and rehabilitated. Half of one of the drained and rehabilitated lagoons will be repurposed to be used as emergency overflow storage which may be required during extreme wet weather events and as a result of power outages. This will result in better environmental outcomes for North West Bay.

Please see below for further information on specific elements of the work:

What happens to the lagoons?

The first phase of works to the lagoons requires earthworks to prepare for de-sludging (removal of the contents of the lagoon). Over the course of approximately one week, two excavators and a tip truck will section the lagoons into smaller portions.

Each section of the lagoon will then be progressively drained and pumped into road tankers which then transport the sludge to be reused on farmland in line with Tasmanian Biosolids Reuse Guidelines 1999.

A temporary road will be created for trucks to access the plant. Trucks will enter the Dru Point area through the existing access road, travel past the plant access gate to enter the plant by an existing access point, through the double gate on the northern boundary fence.

Temporary fencing will be installed either side of a corridor between the gate in the dog walk area fence and the double gates on the plant boundary fence. Double gates either side of this corridor will allow access to the dog walking area, and enable restriction of dog movements when trucks are entering the site. This crossing will be controlled at all times during construction hours.

Conversion to a pump station

While the work to remove sludge from the lagoons takes place we are also undertaking construction to install the sewer pump station. This involves deep excavation required to install a pre-fabricated concrete well within which the pumps will operate.

Underground storage tanks

Further excavation work is required to allow the installation of two underground emergency storage tanks. These tanks will take any flows as a result of extreme wet weather events or power outage. Any additional overflow will be captured in the repurposed lagoon.

Work on the pump station and underground storage tanks will continue until approximately August 2018.

How will this work affect me?

You may notice an increase in odour while the initial earthworks at the lagoons takes place. The de-sludging works are expected to take approximately four weeks in total to complete.

As with any construction site there will be occasional inconveniences such as construction traffic, noise and dust, and we may need to utilise rock breaking equipment which will create additional noise. Please be assured we are endeavouring to complete works in a timely manner.

There will be no interruption to your sewerage service.

There will be a large increase in truck traffic between the plant and the Huntingfield roundabout while we conduct the de-sludging of the lagoons.

Access to the dog walking track around the lagoons will managed by manned traffic control. Please be assured those using the track will only be asked to wait for a short period of time while trucks access the site. We ask for your cooperation and patience whilst these important safety arrangements are in place.

Our construction contractor’s normal working hours are between 7am and 6pm from Monday to Friday and on Saturday as required. You may notice truck movements and people on site prior to 7am as they prepare for the day.

How will the area look once works are complete?

TasWater is in discussions with Kingborough Council regarding the future use of the area. At this stage the area will remain fenced once works are complete. Residents and recreational users of Dru Point will be able to use the area in the same manner as they do now.

Discussions: All (2) Open (2)