Australian made since 1996
To contain debris and sediments from entering Sydney Harbour as a result of the redevelopment of Barangaroo into a world class waterfront precinct. Sitting right in the foreground of Sydney Harbour, this project has an extremely high profile within the city of Sydney with environmental controls being paramount to successful progress of the site.
A major Waste Recycling Facility was having difficulties with odour migrating to surrounding neighbours and environs. Following a site visit by Chatoyer a series of odour control hanging curtains were manufactured.
To complete a task of unblocking a storm water culvert for NSW Government on the shores of Lavender Bay, Sydney Harbour. Chatoyer was contracted by Polaris Marine to manufacture suitable floating environmental protection measures in the case of an oil spill or migration of sediment during the operation. The storm water entry is near a train terminal. It was not known what would be released when the bloackage was dislodged.
Polaris Marine and Chatoyer have enjoyed a successful supply relationship since 2010. From 2010 to 2014, Polaris had installed over 2,000m of Chatoyer Silt Curtain into Sydney Harbour and Parramatta River.
For this waste removal exercise, Polaris created a primary containment area using a custom Silt Curtain to prevent any discharged debris from entering the harbour from the outfall. During the exercise, a great deal of turbidity was generated from the high pressure cleaning techniques and the curtain performed very well in containing this sediment.
A secondary containment measure was put in place. A Floating Fence Boom was installed around the perimeter of the exercise including the work barge. This boom is impermeable and formed a continuous floating containment bund to trap potential oil or hydrocarbon discharge. This containment boom also acted as an additional barrier for any surface debris if it escaped over the primary silt boom.
Maroochydore on Queensland’s Sunshine Coast is undertaking a large redevelopment of its CBD. One of our clients was involved in the construction of a new bridge as part of a road upgrade, with Class 2 Silt Curtain utilised to create a settlement area and ensure that suspended solids did not escape the work area.
In the aftermath of the Christchurch, NZ earthquake of 2011, the city is undertaking a huge redevelopment and reconstruction of the city. As part of these measures, the rubble and damaged buildings from the earthquake are being used to create reclaimed land within Lyttelton Port. To contain possible debris and sediment associated with this reclamation, a heavy duty turbidity curtain was installed to prevent any migration. The area is subject to extreme weather conditions with winds exceeding 40 knots, currents of 8 knots and large ocean swells up to 6m.
Chatoyer’s custom sized Silt Wardens were installed to provide protection of stormwater pits during construction. Silt migration was identified as an environmental risk while widening a motorway. The Silt Warden was placed in the existing stormwater pits within the median strip to prevent silt from escaping into the stormwater system.
The Silt Warden was chosen as the best option to safe guard the stormwater network, add value for money and create an easily managed stormwater quality control plan.
Chatoyer manufactured two custom portable bunding solutions for installation at a coal seam gas exploration site.
Chatoyer’s silt curtains are well known in the industry. They are high quality, durable, expertly engineered turbidity curtains designed to ride out the toughest conditions. Chatoyer was called upon to replace a competitor’s failed curtain in Brisbane River.
An impermeable silt curtain required for a large dredging project. Ventia dredged an area to address significant contamination in Kendall Bay, Sydney. An earlier process of gas production had left the site with a legacy of contamination. To remediate the site, contaminated sediments were excavated and transported onshore for treatment.
A Gross Pollutant Trap (GPT) had been installed in a tidal area neighbouring Cooks River in Sydney. To prevent rubbish from leaving the GPT during high tides, a heavy duty debris boom was installed. A Chatoyer debris boom traps rubbish that floats on water. The debris boom rises with the tide and keeps floating debris and rubbish from escaping over the existing barrier of the GPT.
For this project a new debris boom was required to replace an existing boom which had come to end of life.
Chatoyer’s custom tapered silt curtains were used to protect a lake during construction along it’s shoreline. Construction involved extending a rockwall and creating a channel for an irrigation intake. Historically low water levels had offered ideal conditions for construction.
The deployment area was no more than 2.5m deep and the water conditions were challenging due to wave chop created from 40 – 60 knot winds. Chatoyer designed custom tapered silt curtains to accommodate the changing depth from the shoreline out into the lake.
Mackay Sugar, a leading sugar milling company and part of an international conglomerate, sought to enhance the efficiency of their facultative ponds by controlling and directing the flow of water within the ponds. The primary objective was to prevent short-circuiting and ensure progressive treatment of the water.
