Remediation of a TCE Plume Using a Three-Component Strategy

Dettmers, Dana L.; Macbeth, Tamzen W.; Sorenson, Kent S.; Nelson, Lee O.; Harris, Kevin L.; Peterson, Lance N.; Mecham, Gary; Rothermel, Joe S.

doi:10.1061/(asce)1090-025x(2006)10:2(116)

Cited by 5 publications

(6 citation statements)

References 27 publications

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“…The wastes were primarily industrial and sanitary wastewater, but also included organic, inorganic, and low‐level radioactive constituents. The historical records provide uncertain estimates of the organic wastes (trichloroethene [TCE]) that were disposed to groundwater, ranging from as little as 1,325 liters (L) to as much as 132,500 L (Dettmers et al., ). In 1987, TCE and perchloroethene (PCE) were detected in wells used to supply drinking water to workers at TAN and were traced to the injection well.…”

Section: Site Descriptionmentioning

confidence: 99%

“…Sr‐90 (530–1,880 pCi/L), Cs‐137 (1,600–2,150 pCi/L), and U‐234 (5.2– 7.7 pCi/L; Dettmers et al., ). The sludge material within the injection well was nearly 3 percent by weight TCE, serving as a source of contamination to groundwater.…”

Section: Site Descriptionmentioning

confidence: 99%

“…As described in the Field Demonstration Report, Test Area North Final Groundwater Remediation, Operable Unit 1–07B (DOE, ), ISB was determined to be the most likely option to achieve remedial goals at a cost savings over pump‐and‐treat. TCE is susceptible to microbial degradation to ethene under conditions where it serves as a growth‐linked electron acceptor under strictly anaerobic conditions, a process known as anaerobic reductive dechlorination (ARD; Dettmers et al., ). In November 2002, the ISB began with studies of alternate electron donors, injection strategies, and conceptual model refinement as a result of monitoring following the injections (e.g., result of reducing concentrations, extensive monitoring data).…”

Section: Remedy Implementation and Managementmentioning

confidence: 99%

“…In November 1997, the Idaho National Engineering and Environmental Laboratory (now the INL) published an explanation of significant differences (INEEL, ). The remediation strategy identified three separate contamination zones and different remediation approaches for each zone (Dettmers et al., ). The contamination zone included: (1) the source (hot spot) with initial TCE concentrations greater than 20,000 μg/L, (2) a medial zone of groundwater contamination with TCE concentrations between 20,000 and 1,000 μg/L extending downgradient from the source zone, and (3) a distal portion of the TCE plume with concentrations less than 1,000 μg/L (Exhibit ).…”

Section: Systems‐based Assessmentmentioning

confidence: 99%

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Idaho National Laboratory Test Area North: Application of Endpoints to Guide Adaptive Remediation at a Complex Site

Lee

Truex²,

Freshley³

et al. 2016

Remediation

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Complex sites in the subsurface are defined as those with difficult access, deep, and/or thick zones of contamination, large areal extent, heterogeneities that limit the effectiveness of remediation, or where long‐term remedies are needed to address contamination (e.g., because of long‐term sources or large extent). The Test Area North at the Idaho National Laboratory, developed for nuclear fuel operations and heavy metal manufacturing, is a complex site that demonstrates the endpoints strategy for adaptive remediation. Liquid wastes and sludge from experimental facilities were disposed in an injection well, which contaminated the subsurface aquifer located deep within fractured basalt. The mixed wastes included organic, inorganic, and low‐level radioactive constituents, with the focus of this study on the remediation of trichloroethylene within a systems‐based, regulatory framework. The framework facilitates site, regulator, and stakeholder interactions during the remedial planning and implementation process by using a conceptual model description as a technical foundation for decisions identifying endpoints. Endpoints are defined as interim remediation targets or decision points on the path to an ultimate end, and maintaining protectiveness during the remediation process. Results demonstrate that the three‐component remedy used at Test Area North as an example of the structured framework is largely functioning as intended and is projected to meet remedial action objectives by 2095. The remedy approach is being adjusted as new data become available. The framework provides a structured process for evaluating and adjusting the remediation approach, allowing site owners, regulators, and stakeholders to manage contamination at complex sites where adaptive remedies are needed. ©2016 Wiley Periodicals, Inc.

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Section: Site Descriptionmentioning

confidence: 99%

Section: Site Descriptionmentioning

confidence: 99%

Section: Remedy Implementation and Managementmentioning

confidence: 99%

Section: Systems‐based Assessmentmentioning

confidence: 99%

See 2 more Smart Citations

Idaho National Laboratory Test Area North: Application of Endpoints to Guide Adaptive Remediation at a Complex Site

Lee

Truex²,

Freshley³

et al. 2016

Remediation

View full text Add to dashboard Cite

show abstract

“…The authors concluded that the oxyhumolite (oxidized young lignite) used in the barrier had low adsorptive capacity but served as an excellent support for biofilm attachment. Dettmers et al (2006) report the use of a combination of pump-and-treat for containment, in situ bioremediation, and monitored natural attenuation at a trichloroethylene contaminated site. The combination of three components yielded a more cost effective and efficient strategy than any of the single technologies.…”

mentioning

confidence: 99%