The CMT System (Since 1999)
CMT offers in-field design flexibility, low cost and is easy to install. The number of monitoring ports, port locations, install depths, and monitoring strategy, can all be accommodated and designed right in the field. The single tube offers effective sealing.The 7-Channel is 1.7″ (43 mm) and the 3-Channel is 1.1″ (28 mm).
The Waterloo System (Since 1983)
Waterloo Systems have a modular design that gives a similar flexibility to application as that of the CMT. Their design is much more suited, however, for deeper installations. The engineered seals and dedicated sampling and level monitoring capabilities have been used to 1000 ft (300 m). They are ideal for use in bedrock and for long term monitoring.
CMT |
Waterloo |
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Ideal Depth |
20 ft – 100 ft (6 m – 30 m) |
200 ft – 1000 ft (60 m – 300 m) |
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Typical Borehole |
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| Overburden | > 3.25″ (8.3 cm) dia. (direct push) |
> 5″ (12.5 cm) dia. |
| Bedrock | > 3.25″ (8.3 cm) dia. | 3″ (7.6 cm) to 4″ (10 cm) dia. |
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Isolating Zones |
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| Engineered Packers | 3-Channel |  |
| Layers of Sand & Bentonite | |
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| Direct Burial | |
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Max# of Sampling Zones |
7 | 24 |
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Measuring Depth to Water |
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| < 20 ft (6 m) below ground | 102 Water Level Meter | 102 Water Level Meter |
| > 20 ft (6 m) below ground | 102 Water Level Meter | Vibrating Wire Transducer |
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Groundwater Sampling |
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| Dedicated | – 1/4″ Mini Inertial Pump – 3/8″ Micro DVP |
– Bladder Pump – 5/8″ DVP |
| Portable | – Peristaltic Pump – 1/4″ Mini Inertial Pump – 3/8″ Micro DVP |
– Peristaltic Pump – 1/4″ Mini Inertial Pump – 3/8″ Micro DVP |
