Collecting a sample from a dedicated Double Valve Pump (DVP) and taking pressure measurements with Model 404 Geokon Vibrating Wire Readout (above).
Pump & Transducer
Dedicated pressure transducers allow rapid and accurate measurement of temperature and total water pressure. Unless static water levels are shallow, transducers are the preferred method of water level measurement, both from an efficiency and an accuracy point of view.
The transducers commonly chosen for use in the Waterloo System are unvented vibrating wire transducers, which are very accurate and rugged. They have superior long term operation with minimal drift over time. They can be read with a manual readout, or with a datalogger which can provide remote, unattended monitoring and telemetry, if desired. Transducers are available with pressure ranges from 50 psi to 435 psi. (350 kPa to 3 MPa).
Discrete Zone Water Level Monitoring
Water level measurements can be made in Waterloo ports fitted with an open tube using the narrow, Model 102 Water Level Meter. It has a P4 probe, 4 mm (0.157") OD x 38 mm (1.5") long.
Sampling may be performed in open tubes using a Mini Inertial Pump, Micro Double Valve Pump, or a Peristaltic Pump.
Model 102 P4 Water Level Meter
Monitoring Sites Where the Waterloo System Has Been Used
The Waterloo System has been specified by various industries and consultants for numerous sites across the United States, Canada and overseas. Waterloo Systems have been specified and approved at several sites with Superfund or RCRA designations and in each of the U.S. E.P.A. regions.
The Waterloo System has been used for:
- Defining groundwater flow patterns
- Performance monitoring of pump and treat systems
- Identification and determination of spatial distribution of contaminants
- Early warning system/detection of migrating contaminants
Waterloo Systems have been used to monitor:
- Salt water intrusion
- Industrial cleanups
- Pipeline leaks
- Dam leakage/rehabilitation
- Contaminant identification/cleanup
- DNAPL & LNAPL spill sites
- Waste disposals/landfills
- Soil gas surveys