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.
| 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) |
| 4 | 4 | 55 ft (16.8 m) |
| 5 | 5 | 69 ft (21.0 m) |
| 6 | 6 | 77 ft (23.5 m) |
| 7 | 7 | 92 ft (28.0 m) |
Table 1 Hypothetical Design for a Standard CMT Well (Well ML-1)
