Assembling Standard CMT Systems
Water Quality Probes
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Assembling Standard CMT Multilevel Systems
Table 1 shows the design of a hypothetical CMT Multilevel System designated well “ML-1.” 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.
Note:
A 12.5 inch-pounds torqued port plug is designed to hold 20 psi (50 ft) of head differential.
Monitoring Zone
Channel Number
Depth to Center of Port (from ground surface)
1
1
23 ft (7.0 m)
Monitoring Zone
Channel Number
Depth to Center of Port (from ground surface)
2
2
34 ft (10.4 m)
Monitoring Zone
Channel Number
Depth to Center of Port (from ground surface)
3
3
48 ft (14.6 m)
Monitoring Zone
Channel Number
Depth to Center of Port (from ground surface)
4
4
55 ft (16.8 m)
Monitoring Zone
Channel Number
Depth to Center of Port (from ground surface)
5
5
69 ft (21.0 m)
Monitoring Zone
Channel Number
Depth to Center of Port (from ground surface)
6
6
77 ft (23.5 m)
Monitoring Zone
Channel Number
Depth to Center of Port (from ground surface)
7
7
92 ft (28.0 m)
Table 1 Hypothetical Design for a Standard CMT Well (Well ML-1)
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