Additional Considerations

Risks of Vertical Wells

Clearly, the advent of groundwater science is effectively structured around vertical wells, but that does not make them immune to a variety of flaws as measuring tools. Among other things, unwanted communication can occur between contaminated and uncontaminated strata in drilling through both.

On the reagent injection side, risks of installing vertical wells for delivery are largely characterized by daylighting, which is more problematic with reagents like chemical oxidants.

Depending on site specific conditions, there could be significant benefits in installing horizontal well systems as an alternative.

Make no mistake about it though, vertical wells or less invasive tools are very much a part of the process, because they guide horizontal installation. It is like needing a tub boat to guide in cargo ship, in some circumstances, to reduce overall costs.

Resolution Contaminant Distribution (HRCD)

High Resolution Site Characterization (HRSC) is in a sense “old wine in new bottles”. That is because the art of profiling an aquifer is nothing new, and even newer techniques that off a greater “granularity” in the matrix are themselves 20 years in sequential development.

Of course, that is all done with vertical wells, but what happens when site characterization is done in the horizontal plane? In essence, one can create what we are calling High Resolution Contaminant Distribution (HRCD).

In HRCD dynamics we go up “the spine of the plume” and that relates to naming our systems Vertebrae™. The result is a new expression of the Site Conceptual Model (CSM) , that complements classical views and makes assessment and treatment more dynamic and relevant.

Per- and Polyfluorinated Alkyl Substances (PFAS)

The closest thing to a plague that has hit he environmental industry in anyone’s memory is the emergence of one particular “emerging contaminant” , specifically Per- and Polyfluorinated Alkyl Substances (PFAS).

They have been part of the industrial scene for decades and compliance criteria, while varying from State to State, are all at 70 parts per trillion or less.

This has has created serious concerns in sampling, because many common materials such as well components, personal care products, food packaging and clothing can have traces of PFAS. We are pleased to announce that EN Rx can now provide Vertebrae™ Well Systems that are certified free of these contaminants.

Permeable Reactive Barriers (PRBs)

PRBs or Permable Reactive Barriers, are a long standing solution to addressing dissolved phase plumes, by intersecting and treating them.

Vertebrae™ Well Systems can be factored into permeable reactive barrier (PRB) designs, both to explore the best transect for placement and to provide a safety factor for more treatment should the PRB underperform.

Other Potential Vertebrae Applications

There are other applications for Vertebrae™ Well Systems, worthy of exploration, including but not limited to:

a. Vapor Intrusion – The Vertebrae Well Systems , in certain cases, can serve as a lower cost method of installing a Sub-Slab Depressurization System (SSDS).

b. Leak Detection – A long standing environmental issue in the oil and gas industry involves leaks from not only stored hydrocarbon products, but the briney produced water from exploration. Vertebrae Well Systems have a role here, when enabled with sensors, to serve as a detection modality.

c. Sustainable Remediation – Clearly, the way segmented wells can be used for surgical placement of reagents, creates a situation whereby less materials are needed to remediate sites. This translates to palpable achievements in sustainability metrics, which are sometimes required in completive bidding as part of Corporate Social Responsibility (CSR) intentions.

d. Thermal Treatment – Can be achieved as a function of the compatibility of components.

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