Applications and Advantages of CMT Multilevel Systems
Applications
- Proven and effective for PFAS monitoring***
- Identify vertical as well as horizontal contaminant distribution with transect monitoring
- Ideal for shallow wells in high water table environments
- Multilevel water sampling and level monitoring in unconsolidated soils or bedrock
- Dewatering impact assessments at construction & mining sites
- Mass transport calculations and mass flux estimation
- Monitoring of natural attenuation or remediation processes, and documentation of its effectiveness
- VOC, MTBE and Perchlorate monitoring at NAPL sites
- Determination of the best location for reactive barrier walls, the Waterloo Emitter™ and other remediation methodologies
- Vapor monitoring with special wellhead seals
- Helps optimize design and performance assessment of remedial options
***McGregor R. Six pilot scale studies evaluating the in situ treatment of PFAS compounds in groundwater. Remediation. 30:39–50. https://doi.org/10.1002/rem.21653
Advantages of the CMT Multilevel System
- Low cost and easy to install and use
- Avoid the risk of short-circuiting when using well nests
- Up to 7 depth-discrete zones in a single tube
- Locate ports and seals exactly where desired
- Installs quickly in large direct-push casing and boreholes
- One 7-Channel CMT System can be completed by two people in under 3 hours, 3-Channel even faster
- Borehole not left open to allow cross contamination
- Isolate zones using traditional sand and bentonite layers or 3-Channel Cartridges – reliable and inexpensive
- Minimizes the risk of producing new contaminant pathways vs using well clusters with overlapping adjacent sand packs
One CMT System - Two Sizes
Features
7 Channel
3 channel
Tubing diameter
1.7” (43 mm)
1.1" (28 mm)
Monitoring zones
up to 7
up to 3
Channel diameter
6-Pie: 0.4" (10 mm); 1-Hex: 3/8" (9.5 mm)
3-Hex: 3/8" (9.5 mm)
Channel volume
40 mL/ft.; 30 mL/ft. (center)
30 mL/ft.
Installation options
Sand & bentonite backfill; Natural formation collapse
Bentonite & sand cartridges; Sand & bentonite backfill; Natural formation collapse
Coil lengths (Coil 4 ft. dia.)
100 ft. (30 m), 200 ft; (60 m) & 300 ft. (90 m)
100 ft. (30 m), 200 ft; (60 m) & 500 ft. (150 m)
Centralizer sizes (other sizes optional)
4.4" standard (112 mm)
3.3" standard (84 mm)
Borehole diameter recommended for backfill installations
4" (100 mm) and larger
3.5" (89 mm) and larger
Borehole diameter for installations with seal and sand cartridges
N/A
2.8" - 3.5"; (71 mm - 89 mm)
