Turbidity Monitoring Program
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| Turbidity is a measure of the intensity of plume and is affected by the amount of sediment suspended in the water.
The Environmental Management Plan (EMP) specifies limits on the intensity of the dredging plume at 11 locations in the Bay. These limits have been set in accordance with the environmental tolerances of the most sensitive Bay plants and animals in those particular locations such as seagrass, fish (including migratory fish), benthic invertebrates and seabirds.
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Photo: A turbidity monitoring buoy. Courtesy of PoMC.
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The EMP also requires the use of 'response levels' to ensure early detection of increasing turbidity levels.
Nine other support turbidity monitoring meters exist to provide further information on the Bay’s water quality and the behaviour of the dredging plume. These meters do not have environmental limits.
Turbidity measurements are taken every 12 seconds.
The Port of Melbourne Corporation conducts the monitoring program and releases data from the conformance turbidity monitoring meters weekly while data from the support turbidity monitoring meters is released monthly. 
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For more information on the Turbidity Monitoring Program refer to the Channel Deepening Project website
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Results
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Turbidity results release date
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| | | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations, despite Response Level 1 being activated.
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations, despite Response Level 1 being activated.
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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| | Turbidity levels below limits at all locations
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To view information and results from other programs that monitor Bay water quality click on the links below.
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Water Quality Monitoring Program
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Beach Monitoring Program
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Plume Intensity & Extent Monitoring Program
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Nutrient Cycling Monitoring Program
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Algal Blooms Monitoring Program
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Water Quality in Port Phillip & Westernport Catchment Monitoring Program
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Bacterial Contamination in the Yarra River Monitoring Program
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To view information and results from other environmental limit monitoring programs click on the link below.
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Noise Monitoring Programs
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Return to a list of all monitoring programs
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Please note: Document(s) on this page are presented in PDF format. If you do not have the Adobe Reader, you can download a copy free from the Adobe website.
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