Table 1 shows the design of a hypothetical CMT Multilevel System. Each channel in this well can be used for both collecting a groundwater sample (with either a peristaltic pump, inertial pump or micro double valve pump) and measuring the depth to water. Each channel therefore functions both as a sampling port and an observation port.
A 12.5 inch-pounds torqued port plug is designed to hold 20 psi (50 ft.) of head differential.
|Monitored Zone||Channel Number||Depth to Center of Port
(from ground surface)
|1||1||23 ft (7.0 m)|
|2||2||34 ft (10.4 m)|
|3||3||48 ft (14.6 m)|
Hypothetical Design for a Standard CMT Well (Well ML-1)