Flux‐Informed Remediation Decision Making

Suthersan, Suthan; Divine, Craig; Quinnan, Joseph; Nichols, E.M.

doi:10.1111/j.1745-6592.2009.01274.x

Cited by 23 publications

(13 citation statements)

References 19 publications

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“…While the measurement of groundwater flux is far from common practice for aquifer testing and monitoring, its importance has long been recognized [e.g., Dagan , ]. In groundwater remediation, there has been a growing interest on predicting flux fields, as mass flux has become an important metric to evaluate remediation effort [ ITRC , ; Suthersan et al ., ].…”

Section: Discussionmentioning

confidence: 99%

The relative importance of head, flux, and prior information in hydraulic tomography analysis

Tso

Yeh

Wen

2016

Water Resources Research

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Using cross-correlation analysis, we demonstrate that flux measurements at observation locations during hydraulic tomography (HT) surveys carry nonredundant information about heterogeneity that are complementary to head measurements at the same locations. We then hypothesize that a joint interpretation of head and flux data, even when the same observation network as head has been used, can enhance the resolution of HT estimates. Subsequently, we use numerical experiments to test this hypothesis and investigate the impact of flux conditioning and prior information (such as correlation lengths and initial mean models (i.e., uniform mean or distributed means)) on the HT estimates of a nonstationary, layered medium. We find that the addition of flux conditioning to HT analysis improves the estimates in all of the prior models tested. While prior information on geologic structures could be useful, its influence on the estimates reduces as more nonredundant data (i.e., flux) are used in the HT analysis. Lastly, recommendations for conducting HT surveys and analysis are presented.

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Section: Discussionmentioning

confidence: 99%

The relative importance of head, flux, and prior information in hydraulic tomography analysis

Tso

Yeh

Wen

2016

Water Resources Research

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“…The HRX Well concept addresses many of the challenges and limitations inherent to conventional remediation approaches, including: costs and time requirements associated with hydraulic containment, delivery of injected reagent‐based strategies in complex hydrostratigraphy, and up‐front costs and long‐term hydraulics in flow‐through PRB treatment schemes. For many sites, it is increasingly recognized that contaminant mass flux and discharge may represent the most appropriate measure of plume strength and potential migration risk and, therefore, remedial objectives and technologies focusing primarily on long‐term mass discharge reduction will be increasingly favored (e.g., Suthersan, Divine, Quinnan, & Nichols, ; Suthersan, Horst, Schnobrich, Welty, & McDonough, ). The HRX Well concept is particularly well‐suited for sites where long‐term mass discharge control is a primary performance objective.…”

Section: Discussionmentioning

confidence: 99%

The horizontal reactive media treatment well (HRX Well^®) for passive in situ remediation: Design, implementation, and sustainability considerations

Divine

Wright

Wang

et al. 2018

Remediation Journal

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A new in situ remediation concept termed a Horizontal Reactive Media Treatment Well (HRX Well®) is presented that utilizes a horizontal well filled with reactive media to passively treat contaminated groundwater in situ. The approach involves the use of a large‐diameter directionally drilled horizontal well filled with solid reactive media installed parallel to the direction of groundwater flow. The engineered contrast in hydraulic conductivity between the high in‐well reactive media and the ambient aquifer hydraulic conductivity results in the passive capture, treatment, and discharge back to the aquifer of proportionally large volumes of groundwater. Capture and treatment widths of up to tens of feet can be achieved for many aquifer settings, and reductions in downgradient concentrations and contaminant mass flux are nearly immediate. Many different types of solid‐phase reactive treatment media are already available (zero valent iron, granular activated carbon, biodegradable particulate organic matter, slow‐release oxidants, ion exchange resins, zeolite, apatite, etc.). Therefore, this concept could be used to address a wide range of contaminants. Laboratory and pilot‐scale test results and numerical flow and transport model simulations are presented that validate the concept. The HRX Well can access contaminants not accessible by conventional vertical drilling and requires no aboveground treatment or footprint and requires limited ongoing maintenance. A focused feasibility evaluation and alternatives analysis highlights the potential cost and sustainability advantages of the HRX Well compared to groundwater extraction and treatment systems or funnel and gate permeable reactive barrier technologies for long‐term plume treatment. This paper also presents considerations for design and implementation for a planned upcoming field installation.

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“…Contaminant mass discharge is an integration of all the mass flux values across the dissolved plume and has units of mass per unit time. Contaminant mass discharge is an important metric of the overall “strength” of the dissolved plume that can be very useful in risk evaluations and prioritizing cleanup efforts (Einarson et al 2001; Rao et al 2003; Suthersan et al 2010).…”

Section: Key Advantages Of the Transect Approachmentioning

confidence: 99%

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Parker

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Flux‐Informed Remediation Decision Making

Cited by 23 publications

References 19 publications

The relative importance of head, flux, and prior information in hydraulic tomography analysis

The relative importance of head, flux, and prior information in hydraulic tomography analysis

The horizontal reactive media treatment well (HRX Well^®) for passive in situ remediation: Design, implementation, and sustainability considerations

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Flux‐Informed Remediation Decision Making

Cited by 23 publications

References 19 publications

The relative importance of head, flux, and prior information in hydraulic tomography analysis

The relative importance of head, flux, and prior information in hydraulic tomography analysis

The horizontal reactive media treatment well (HRX Well®) for passive in situ remediation: Design, implementation, and sustainability considerations

News & Views

Contact Info

Product

Resources

About

The horizontal reactive media treatment well (HRX Well^®) for passive in situ remediation: Design, implementation, and sustainability considerations