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Stochastic Cost Optimization of Multistrategy DNAPL Site Remediation

Jack Parker, Ungtae Kim, Peter K. Kitanidis, Michael Cardiff, Xiaoyi Liu
2010 Ground Water Monitoring & Remediation  
This paper investigates numerical optimization of dense nonaqueous phase liquid (DNAPL) site remediation design considering effects of prediction and measurement uncertainty.  ...  Simultaneous optimization of monitoring frequency, averaging period, and lookback periods to confirm decisions, in addition to remediation design variables, reduced ENPV cost.  ...  Introduction In the last 25 years, there have been a number of mostly academic studies on remediation optimization, which reflect an increasing appreciation for the importance of cost optimization.  ... 
doi:10.1111/j.1745-6592.2010.01287.x fatcat:7eopxbpmk5h3lpciapxflksujy

A geometric approach to joint inversion with applications to contaminant source zone characterization

Alireza Aghasi, Itza Mendoza-Sanchez, Eric L Miller, C Andrew Ramsburg, Linda M Abriola
2013 Inverse Problems  
Comparison of the reconstructions with the true DNAPL architectures highlights the superior performance of the model-based technique and joint inversion scheme.  ...  The performance of the technique is examined and discussed through the reconstruction of source zone architectures that are representative of dense non-aqueous phase liquid (DNAPL) contaminant release  ...  Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.  ... 
doi:10.1088/0266-5611/29/11/115014 fatcat:qf3m2xptt5bkhgltgkagdngzki

Optimal search strategy for the definition of a DNAPL source

Zoi Dokou, George F. Pinder
2009 Journal of Hydrology  
Delineating and removing the DNAPL source is an essential step that renders remediation successful and lowers the estimated remediation time and cost significantly.  ...  The goal of this work is to create an optimal search strategy in order to obtain, at least cost, information regarding a DNAPL source location.  ...  If the correct DNAPL source location is identified and removed from the site, the remediation and monitoring costs are significantly reduced.  ... 
doi:10.1016/j.jhydrol.2009.07.062 fatcat:jgjmaqqxmndgrcfvdgaihrkeyy

Estimating mass discharge from dense nonaqueous phase liquid source zones using upscaled mass transfer coefficients: An evaluation using multiphase numerical simulations

John A. Christ, C. Andrew Ramsburg, Kurt D. Pennell, Linda M. Abriola
2006 Water Resources Research  
1] Difficulties associated with identifying the dense nonaqueous phase liquid (DNAPL) source zone architecture at the field scale, combined with the computational costs of field-scale DNAPL dissolution  ...  This study compares upscaled model predictions of flux-weighted downstream concentrations and source longevity to predictions derived from three-dimensional multiphase numerical simulation of tetrachloroethene  ...  and computational costs of field-scale dissolution simulations.  ... 
doi:10.1029/2006wr004886 fatcat:kd2q6fv5ofgtljskrblg2cihni

Hydraulic/partitioning tracer tomography for characterization of dense nonaqueous phase liquid source zones

Tian-Chyi J. Yeh, Junfeng Zhu
2007 Water Resources Research  
Results show that prior knowledge of hydraulic heterogeneity is critical for mapping the distribution of DNAPLs.  ...  1] A new technology, hydraulic/partitioning tracer tomography (HPTT), is proposed to survey spatial distributions of hydraulic properties and dense nonaqueous phase liquids (DNAPLs) in the subsurface.  ...  subcontracted through the University of Iowa, and in part by NSF grant EAR-0229717, NSF IIS-0431079, and NSF EAR-0450388.  ... 
doi:10.1029/2006wr004877 fatcat:7dyydhe2vbfozpn2xbqflrnqzy

Data Analysis and Modeling to Optimize Thermal Treatment Cost and Performance

Jack C. Parker, Ungtae Kim, Alyson Fortune, Steffen Griepke, James P. Galligan, Amber Bonarrigo
2017 Ground Water Monitoring & Remediation  
Early termination of heating in regions that reach cleanup targets sooner enables operating costs to be reduced while ensuring a high likelihood of meeting remediation objectives.  ...  optimization algorithm to identify monitoring strategies to meet objectives with minimum expected cost.  ...  Summary and Conclusions Thermal treatment methods are effective technologies for remediation of DNAPL source zones due to their rela tively low sensitivity to aquifer heterogeneity and DNAPL distributions  ... 
doi:10.1111/gwmr.12199 fatcat:geqzzuymjnbhpdmle5udbizdxi

Tracer tests for the investigation of heterogeneous porous media and stochastic modelling of flow and transport—a review of some recent developments

Thomas Ptak, Matthias Piepenbrink, Eugeniu Martac
2004 Journal of Hydrology  
This contribution covers and gives examples on the following topics: depth integrated and three-dimensional natural and forced gradient tracer test methods together with their fields of application at  ...  In heterogeneous porous aquifers, simulations and predictions of groundwater flow and solute (contaminant) transport require detailed knowledge of aquifer parameters and their spatial distribution.  ...  groundwater'), grant GR 971/6, and by the EU, contract No.  ... 
doi:10.1016/j.jhydrol.2004.01.020 fatcat:y3go56cxpbh5vjjkxizo3i3uaq

Evaluation of Health Risks for Contaminated Aquifers

Warren T. Piver, Timothy L. Jacobs, Miguel A. Medina
1997 Environmental Health Perspectives  
human populations, and the evaluation of aquifer remediation technologies.  ...  Major limitations and areas for continuing research for all methods presented in this review are identified.  ...  One method for evaluating the reduction of health risks and remediation costs for a specific remediation technology or process is the second moment method.  ... 
doi:10.2307/3433402 pmid:9114282 pmcid:PMC1470237 fatcat:qe5m232pxvbnrgl6y7nazprogi

Assessment and management of risk in subsurface hydrology: A review and perspective

Daniel M. Tartakovsky
2013 Advances in Water Resources  
algorithms for quantification of model (structural) uncertainty, and computational methods for decision-making under uncertainty (stochastic optimization and decision theory).  ...  The subjects discussed include probabilistic analyses of exposure pathways, PRAs based on fault tree analyses and other systems-based approaches, PDF (probability density functions) methods for propagating  ...  groundwater/surface water [136, 141] resources, and to select an optimal DNAPL remediation strategy that minimizes remediation costs while not exceeding the probability of failure arising from parametric  ... 
doi:10.1016/j.advwatres.2012.04.007 fatcat:4rmf5dur35hvndmp567lizmegy

State of the Art Report on Mathematical Methods for Groundwater Pollution Source Identification

Juliana Atmadja, Amvrossios Bagtzoglou
2001 Environmental Forensics  
To choose an appropriate remediation strategy, knowledge of the contaminant release source and time release history becomes pertinent.  ...  The purpose of this paper is to present and review mathematical methods that have been developed during the past 15 years to identify the contaminant source location and recover the time release history  ...  The legislation has not been an unquali®ed success in assigning the liability and the cost of cleanup is staggering.  ... 
doi:10.1006/enfo.2001.0055 fatcat:sidfzomjura3rnjq5nypdjcd34

Natural Source Zone Depletion (NSZD) Quantification Techniques: Innovations and Future Directions

Roya Pishgar, Joseph Patrick Hettiaratchi, Angus Chu
2022 Sustainability  
Natural source zone depletion (NSZD) is an emerging technique for sustainable and cost-effective bioremediation of light non-aqueous phase liquid (LNAPL) in oil spill sites.  ...  It is hoped that this review can provide researchers and practitioners with sufficient information to opt the best practice for the research and application of NSZD for the management of LNAPL impacted  ...  The review and revision process were supported by Associated Engineering Alberta Ltd.  ... 
doi:10.3390/su14127027 doaj:eb79d8e4bde14017be28ba8e89638d63 fatcat:tgvxd3eaqzaanhc7wscxfvv4ce

Dealing with spatial heterogeneity

Gh. de Marsily, F. Delay, J. Gonçalvès, Ph. Renard, V. Teles, S. Violette
2005 Hydrogeology Journal  
A world-wide catalog of aquifer facies geometry and properties, which could combine site genesis and description with methods used to assess the system, would be of great value for practical applications  ...  The techniques available for these descriptions are mostly continuous Geostatistical models, or discontinuous facies models such as the Boolean, Indicator or Gaussian-Threshold models and the Markov chain  ...  Clifford Voss, for inviting them to write this paper, and for numerous comments and suggestions throughout the preparation of this paper  ... 
doi:10.1007/s10040-004-0432-3 fatcat:opv5cr4iczgsnjmnv2kjbnfxry

Advances in interpretation of subsurface processes with time-lapse electrical imaging

K. Singha, F. D. Day-Lewis, T. Johnson, L. D. Slater
2014 Hydrological Processes  
Electrical geophysical methods, including electrical resistivity, time-domain induced polarization, and complex resistivity, have become commonly used to image the near subsurface.  ...  Two-dimensional ERI across a sharp ecotone in Michigan from Jayawickreme et al. (2008) before the start of the growing season (May) and in the peak of the growing season (August).  ...  ACKNOWLEDGEMENTS This research was supported in part by National Science Foundation Grant EAR-0747629 and Environmental Protection Agency Region 1 and the U.S. Geological Survey's  ... 
doi:10.1002/hyp.10280 fatcat:stskj5frerfyrf4qpnk7qphgom

Integrated modeling of metals biogeochemistry: Potential and limits

Virgil Iordache, Stelian Ion, Alin Pohoaţă
2009 Chemie der Erde  
And, finally, the operational potential: long-term research network for the study of contaminated sites as basic science experimental areas for implementing the proactive operational potential.  ...  use of the existing new mathematical tools and (b) empirical research for delineating in situ the elementary units of models application and the use of programming in geographic information systems (GIS  ...  Acknowledgements We wish to thank to the organizers of the Symposium on Remediation in Jena, October 2006, ''Bio-Geo-Interactions and reactive transport'', and especially Prof. Georg Büchel and Prof.  ... 
doi:10.1016/j.chemer.2008.12.001 fatcat:neg64ntpjfcrjbvumroltta4zq

On the efficiency of the hybrid and the exact second-order sampling formulations of the EnKF: a reality-inspired 3-D test case for estimating biodegradation rates of chlorinated hydrocarbons at the port of Rotterdam

Mohamad E. Gharamti, Johan Valstar, Gijs Janssen, Annemieke Marsman, Ibrahim Hoteit
2016 Hydrology and Earth System Sciences  
</strong> This study considers the assimilation problem of subsurface contaminants at the port of Rotterdam in the Netherlands.  ...  We focus on assessing the efficiency of an adaptive hybrid ensemble Kalman filter and optimal interpolation (EnKF-OI) and the exact second-order sampling formulation (EnKF<sub>ESOS</sub>) for mitigating  ...  Research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST).  ... 
doi:10.5194/hess-20-4561-2016 fatcat:6jjwpxtusvbsxhrvqjum67ol5a
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