The Project
GEO is monitoring a construction project adjacent to a waterway. The project required water quality monitoring as well as the standard geotechnical monitoring.
Monitoring Requirements
The water quality parameters included pressure, water temperature, dissolved oxygen, pH, conductivity, and turbidity. Measurements were to be obtained at 1 to 6 hour intervals.
Implementation
GEO deployed four In-Situ Rugged Buoys, each equipped with an In-Situ Aquatroll 500 multiparameter sonde, and an EWS cellular datalogger, an external antenna, and four solar panels.
Weight was added to the bottom of the buoys to balance the solar panels at the top. 18 pound river anchors keep the buoys at their designated locations.
Operation
Operation was fully automated. The EWS logger retrieves measurements from the In-Situ sonde and transmits them to a Geocloud project website via a cellular internet connection. The website displays the water quality measurements along with all the other monitoring data from the project.
Since the buoys can rotate, GEO attached four solar panels to ensure that at least one would face the sun.
The compact EWS logger fit into the buoy easily. GEO connected it to an external antenna placed in the lid.
The buoys were ferried to their designated locations and anchored.
Measurements are relayed from the waterway locations to a GeoCloud website.