E-Flux - Clear-Well Transparent LNAPL Monitoring Solution

Clear-Well is the smart alternative to monitoring wells

Monitoring wells are notoriously limited for characterizing the mass and distribution of LNAPL in the formation.

E-Flux Clear-Well is a transparent port that can be surveyed on demand using a portable instrument. Surveying the exact same locations allows for direct comparisons of data surveyed at different times.

Each survey can help you:

• Measure LNAPL distributions at the pore scale (< 20µm— about the thickness of a human hair), providing quantitation of remedy performance, natural source depletion, biogas production, LNAPL mobility and soil geochemical changes. 

• White and UV lights show detailed formation lithology overlapping the contaminant distribution.

• Our proprietary software transforms digital images into depth-dependent soil saturation profiles.

The evaluation of LNAPL is essential for developing effective cleanup strategies, evaluating contamination risks, and monitoring the success of remediation efforts. Detailed pore-scale information will benefit the LNAPL conceptual site model, Risk Assessment, and Performance Monitoring of remediation efforts.

Measurement

Our proprietary software transforms digital images into depth-dependent soil saturation profiles. Further, repeat the surveys to track changes over time.

Monitoring

Surveying the exact same locations allows for performance monitoring of active remediation techniques, identifying LNAPL thin films (sheens) and providing a detailed contaminant profile over the actual lithology

Documentation

Detailed pore-scale information provides proof of geochemical changes, natural source zone depletion, biogas production, and LNAPL mobility.

Clear-Well installation is nearly identical to that of monitoring wells. The use of Clear-Well requires a single installation by a local driller using standard direct push techniques. Once installed, the optically transparent port can be surveyed repeatedly on demand.

Clear-Well is made of standard 2.5” nominal size PVC casing, custom machined to host a thick wall borosilicate (Pyrex) glass tube. 

Unmatched resolution to < 20µm

With a resolution about the thickness of a human hair, Clear-Well allows locations to be surveyed on demand with a portable instrument.

Each survey utilizes both white and UV lights, revealing detailed formation lithology that overlaps with the contaminant distribution. This type of information is key for understandingthe mechanisms driving LNAPL mobility and stability at field sites under changing conditions.

Additionally, surveying the exactsame locations allows for direct comparisons of data collected at different times.

Observations through the optically clear glass provide details of formation materials and contaminant distributions, allowing you to:

• Quantify remedy performance and mass losses upon NSZD or an active remedy. 
• Characterize LNAPL distribution changes upon water table fluctuations.
• Identify LNAPL mobilization as sheens.
• Document the release of biogas upon contaminant biodegradation.