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Solinst - Model 615ML -Multilevel Drive-Point Piezometer
The Model 615 ML Multilevel Drive-Point Piezometer system can provide several monitoring zones in one drive location. The 615 ML Ports have a dual barbed stem that allows the connection of either 3/8" OD or 1/4" OD tubing to create up to 3 or 6 monitoring zones, respectively. The 615 ML Multilevel System is installed using extensions and a Manual Slide Hammer, similar to standard 615 installations, for high-resolution vertical groundwater or soil gas profiling.
Monitor up to six isolated zones in a single drive location. The 615ML Multilevel Drive-Point Piezometer provides an affordable method to obtain shallow groundwater and soil vapor samples. Solinst also offers the Model 403 CMT® Multilevel System and Model 401 Waterloo Multilevel System (see Model 403 CMT Multilevel System and 401 Waterloo Multilevel Groundwater Monitoring System Data Sheets).
Multilevel Drive-Point Piezometers consist of monitoring ports with stainless steel, 100 mesh cylindrical filter-screens on 3/4" OD stainless steel drive-point port bodies. The ports are connected using 3/4" NPT stainless couplings and drive pipe extensions. A drive-point tip threads onto the first extension, or port, to be driven into the ground. Monitoring ports, couplings, and extensions are added as the piezometer is advanced into the subsurface.
The Drive-Points are designed for single use installations, and not for removal and reuse. They can also be used for temporary, short term monitoring applications. Solinst Multilevel Drive-Point Piezometers can be driven into the ground with any direct push or drilling technology, including a Manual Slide Hammer.
- Up to 6 depth-discrete zones in a single drive
- Low cost and made from durable materials; some accessories available locally
- Easy to assemble and installs quickly using direct push methods or a manual slide hammer
- High-resolution vertical subsurface profiling
- Groundwater sampling, including VOCs
- Water level monitoring
- Soil gas sampling
- Multilevel groundwater monitoring
- Contaminant plume delineations
- Low cost and minimal disturbance site assessment
The 615ML Multilevel Drive-Point Ports have a dual barb stem to allow the connection of 3/8" OD (9.5 mm) or 1/4" OD (6 mm) polyethylene or PTFE-lined tubing to create up to 3 or 6 monitoring zones, respectively. Sample water enters the port, passes into the stem, and up into the monitoring tube.
Multilevel groundwater monitoring involves creating a series of discrete isolated intervals at various depths in a single borehole. This high-resolution subsurface profiling method has many advantages:
- Provides detailed subsurface data for accurate 3D site assessments, including horizontal and vertical contaminant concentrations and flow
- Short multilevel screens overcome issues created by long screens, which blend groundwater chemistry over the entire length
- Ambient flow between different zones in a well is avoided with properly isolated multilevels, preventing cross-contamination or flow outside the well
- Low cost compared to installing multiple boreholes and reduced site disturbance; less permits and time required on site
- Reduced field time due to smaller purge volumes, reduced disposal, efficient sampling and rapid response to pressure changes in small diameter monitoring tubes
- Improves remediation strategies by monitoring the thickness, concentration variations, movement and extent of a plume over time
Since the early 1980s, Solinst has been working with experts in the hydrogeology field to develop groundwater monitoring systems, which provide the high-resolution subsurface data that accurate subsurface investigations demand. Solinst manufactures three different types of multilevel systems, each suited to different environments and applications.