Turbidity Monitoring During Dredging Operations
Dredging is a common practice for removal of contaminated sediment for remediation under CERCLA, commonly called the “Superfund” program, or for maintenance and expansion of ports, harbors and shipping channels. Real-time turbidity monitoring during the dredging operation provides needed data to aid in decision making and ensure minimal environmental impact.
Dredging and Environmental Impacts
Typical Turbidity Monitoring System
Buoy based systems are most commonly used for dredging operations. They are easy to deploy and relocate as needed. Flexible mooring options allow for deployment in almost any location.
The NexSens CB-450 buoy is an ideal platform for dredge turbidity monitoring. It is light enough to be deployed from most small boats, yet large enough to provide sufficient power in medium to long-term applications with its on-board battery and three solar panels. It supports an M550 solar marine light for night-time visibility.
For data logging, the NexSens X2-CB data logger simplifies sensor connections and transmission of real-time data to the WQData LIVE web datacenter, where alarms are configured to provide notice when critical thresholds are exceeded. The X2-CB logger is compatible with most industry-standard turbidity sensors including those from YSI, Campbell, Eureka, In-situ and others. The logger has multiple sensor ports to accommodate situations where sensors are placed at various depths.
Short-term applications can often be covered by the simpler CB-50 data buoy with an X2-SDL logger. This provides all of the same functionality of a comparable CB-450 system except for solar charging, and in a small and lightweight system that is simple to deploy.
In situations where additional parameters are required, the X2 data logging platform supports a variety of additional sensors for measurement of water quality, weather conditions, currents and more.
Contact a NexSens Applications Engineer today to discuss your dredge turbidity monitoring application.
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