Abstract
For contaminated sites, conceptual site models (CSMs) guide the assessment and management of risks, including remediation strategies. Recent research has expanded diagrammatic CSMs with structural causal modeling to develop what are nominally called conceptual Bayesian networks (CBNs) for environmental risk assessment. These CBNs may also be useful for problems of controlling and preventing offsite contaminant migration, especially for sites containing dense nonaqueous phase liquids (DNAPLs). In particular, the CBNs provide greater clarity on the causal relationships between source term, onsite and offsite migration, and remediation effectiveness characterization for contaminated DNAPL sites compared to traditional CSMs. These ideas are demonstrated by the inclusion of modifying variables, causal pathway analysis, and interventions in CBNs. Additionally, several new extensions of the CBN concept are explored including the representation of measurement variables as lines of evidence and alignment with conventional pictorial CSMs for groundwater modeling. Taken as a whole, the CBNs provide a powerful and adaptable knowledge representation tool for remediating subsurface systems contaminated by DNAPL.
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs11356-024-34340-4/MediaObjects/11356_2024_34340_Fig1_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs11356-024-34340-4/MediaObjects/11356_2024_34340_Fig2_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs11356-024-34340-4/MediaObjects/11356_2024_34340_Fig3_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs11356-024-34340-4/MediaObjects/11356_2024_34340_Fig4_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs11356-024-34340-4/MediaObjects/11356_2024_34340_Fig5_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs11356-024-34340-4/MediaObjects/11356_2024_34340_Fig6_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs11356-024-34340-4/MediaObjects/11356_2024_34340_Fig7_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs11356-024-34340-4/MediaObjects/11356_2024_34340_Fig8_HTML.png)
Data availability
This article does not contain data.
References
ANZG (2018) Australian and New Zealand Guidelines for Fresh and Marine Water Quality. Australian and New Zealand Governments and Australian state and territory governments, Canberra ACT, Australia. Available online at: www.waterquality.gov.au/anz-guidelines (accessed 10/5/2023)
ASTM (2020) Standard Guide for Develo** Conceptual Site Models for Contaminated Sites. ASTM Designation: E1689 – 20, 13 pp, https://www.astm.org/e1689-20.html (last accessed 8/28/2023)
Ayre KK, Landis WG (2012) A Bayesian approach to landscape ecological risk assessment applied to the Upper Grande Ronde Watershed, Oregon. Hum Ecol Risk Assess Int J 18(5):946–970
Bartolo RE, Harford AJ, Bollhöfer A, van Dam RA, Parker S, Breed K, Erskine W, Humphrey CL, Jones D (2017) Causal models for a risk-based assessment of stressor pathways for an operational uranium mine. Hum Ecol Risk Assess Int J 23(4):685–704
Bayesia S.A.S. (2023) BayesiaLab 10.2 PE-L. Laval, FR
Bear J, Cheng AHD (2010) Modeling groundwater flow and contaminant transport. Springer, Dordrecht
Bian J, Ruan D, Wang Y, Sun X, Gu Z (2023) Bayesian ensemble machine learning-assisted deterministic and stochastic groundwater DNAPL source inversion with a homotopy-based progressive search mechanism. J Hydrol 624:129925
Borsuk ME (2008) Bayesian networks. Jørgensen SE, Fath BD (eds) Encyclopedia of ecology. Academic Press, pp 307–317
Bresciani S, Blackwell AF, Eppler M (2008) A collaborative dimensions framework: Understanding the mediating role of conceptual visualisations in collaborative knowledge work. Proceedings of the 41st Annual Hawaii International Conference on System Sciences (HICSS 2008), 364–364, Waikoloa, HI, US https://doi.org/10.1109/HICSS.2008.7
Cain J, (2001) Planning improvements in natural resources management: Guidelines for using Bayesian networks to support the planning and management of development programmes in the water sector and beyond. Centre for Ecology & Hydrology, Oxon UK. 124
Carriger JF, Parker RA (2021) Conceptual Bayesian networks for contaminated site ecological risk assessment and remediation support. J Environ Manage 278:111478
Carriger JF, Dyson BE, Benson WH (2018) Representing causal knowledge in environmental policy interventions: Advantages and opportunities for qualitative influence diagram applications. Integr Environ Assess Manag 14(3):381–394
Castilla-Rho JC (2017) Groundwater modeling with stakeholders: finding the complexity that matters. Groundwater 55:620–625. https://doi.org/10.1111/gwat.12569
Chen SH, Pollino CA (2012) Good practice in Bayesian network modelling. Environ Model Softw 37:134–145
Clemen RT, Reilly T (2014) Making hard decisions with DecisionTools®. Third Edition. Cengage Learning, Mason, OH
Cohen RM, Mercer JW (1993) DNAPL site evaluation, EPA/600/R-93/002, https://clu-in.org/download/contaminantfocus/dnapl/600r93022.pdf, last accessed October 19, 2023
Conrady S, Jouffe L (2015) Bayesian networks and BayesiaLab: a practical introduction for researchers (vol 9). Bayesia USA, Franklin
Conrady S, Jouffe L, Elwert F (2014) Causality for policy assessment and impact afrenchnalysis. White paper, Draft- October 27, 2014, Bayesia SAS, Laval
Coupé VM, Van der Gaag LC (2002) Properties of sensitivity analysis of Bayesian belief networks. Ann Math Artif Intell 36:323–356
DEHP (2012) Pictures worth a thousand words: a guide to pictorial conceptual modelling. #30150. Department of Environment and Heritage Protection, Queensland Wetlands Program, Brisbane
EPA Victoria (2023) Guidance for environmental and human health risk assessment of wastewater discharges to surface waters. Publication 1287, Water Sciences and Environmental Public Health Branch, Science Division, Melbourne
Feenstra S, Cherry JA, Parker BL (1996) Conceptual models for the behavior of dense non-aqueous phse liquids (DNAPLs) in the subsurface, edited by Pankow. Cherry, Waterloo Press, Portland Oregon, J.F. and J.A, p 522
Fenton N, Neil M (2011) Avoiding probabilistic reasoning fallacies in legal practices using Bayesian networks. Australian Journal of Legal Philosophy 36:114–150
Fenton N, Neil M (2019) Risk assessment and decision analysis with Bayesian networks, 2nd edn. CRC Press, Boca Raton, FL
Fenton N, Neil M, Lagnado DA (2013) A general structure for legal arguments about evidence using Bayesian networks. Cogn Sci 37(1):61–102
Ferre TP (2020) Being Bayesian: discussions from the perspectives of stakeholders and hydrologists. Water 12(2):461
French S, Maule J, Papamichail N (2009) Decision behaviour, analysis and support. Cambridge University Press
Geiger D, Verma T, Pearl J (1990) D-separation: From theorems to algorithms. In Machine Intelligence and Pattern Recognition (Vol. 10, pp. 139–148). North-Holland
Gregory R, Failing L, Harstone M, Long G, McDaniels T, Ohlson D (2012) Structured decision making: a practical guide to environmental management choices. John Wiley & Sons, Chichester, West Sussex, UK
Gross JE (2003) Develo** conceptual models for monitoring programs. NPS Inventory and Monitoring Programme, USA
Hassan S, Wang J, Kontovas C, Bashir M (2022) An assessment of causes and failure likelihood of cross-country pipelines under uncertainty using bayesian networks. Reliab Eng Syst Saf 218:108171
Jakeman AJ, Letcher RA, Norton JP (2006) Ten iterative steps in development and evaluation of environmental models. Environ Model Softw 21(5):602–614
Kaikkonen L, Parviainen T, Rahikainen M, Uusitalo L, Lehikoinen A (2021) Bayesian networks in environmental risk assessment: A review. Integr Environ Assess Manag 17(1):62–78
Koch J, Nowak W (2015) Predicting DNAPL mass discharge and contaminated site longevity probabilities: Conceptual model and high-resolution stochastic simulation. Water Resour Res 51(2):806–831
Korb KB, Hope LR, Nyberg EP (2009) Information-theoretic causal power. In: Emmert-Streib F, Dehmer M (eds) Information Theory and Statistical Learning. Springer Science+Business Media, LLC, New York, NY, pp 231–265
Kueper BH, Davies KL (2009) Assessment and delineation of DNAPL source zones at hazardous waste sites: publication EPA/600/R-09/119. United States Environmental Protection Agency, Cincinnati
Kueper BH, Stroo HF, Vogel CM, Ward CH (eds) (2014a) Chlorinated solvent source zone remediation. Springer Science+Business Media, New York, p 713
Kueper BH, Stroo HF, Vogel CM, Ward CH (2014b) Source zone remediation: the state of the practice. In: Kueper BH, Stroo HF, Vogel CM, Ward CH (eds) Chlorinated solvent source zone remediation. Springer Science+Business Media, New York, p 713
Laskey KB (1993) Sensitivity analysis for probability assessments in Bayesian networks. In: Heckman D, Mamdani A (eds) UAI'93: Proceedings of the ninth international conference on uncertainty in artificial intelligence. Washington DC, pp 136–142
Lerner DN, Kueper BH, Wealthall GP, Smith JWN, Leharne SA (2003) An illustrated handbook of DNAPL transport and fate in the subsurface. Environment Agency R&D Publication 133, Almondsbury, Bristol UK
Liedloff AC, Smith CS (2010) Predicting a ‘tree change’in Australia's tropical savannas: Combining different types of models to understand complex ecosystem behaviour. Ecol Model 221(21):2565–2575
Luoma E, Nevalainen L, Altarriba E, Helle I, Lehikoinen A (2021) Develo** a conceptual influence diagram for socio-eco-technical systems analysis of biofouling management in ship**–A Baltic Sea case study. Mar Pollut Bull 170:112614
Luoma E, Parviainen T, Haapasaari P, Lehikoinen A (2024) Sustainability as a shared objective? Stakeholders’ interpretations on the sustainable development of marinas in the Gulf of Finland. Ocean Coast Manag 254:107197
Marcot BG, Steventon JD, Sutherland GD, McCann RK (2006) Guidelines for develo** and updating Bayesian belief networks applied to ecological modeling and conservation. Can J for Res 36(12):3063–3074
McMahon A, Heathcote J, Carey M, Erskine A (2001) Guide to good practice for the development of conceptual models and the selection and application of mathematical models of contaminant transport processes in the subsurface. National Groundwater & Contaminated Land Centre Report NC/99/38/2. Environment Agency, Solihull
Neapolitan RE (2009) Probabilistic Methods for Bioinformatics with an Introduction to Bayesian Networks. Morgan Kaufmann Publishers, Burlington (MA)
Neuman SP (2003) Maximum likelihood Bayesian averaging of uncertain model predictions. Stoch Env Res Risk Assess 17(5):291–305
Nicholson AE, Jitnah N (1998) Using mutual information to determine relevance in Bayesian networks. In Pacific Rim international conference on artificial intelligence (pp. 399–410). Berlin, Heidelberg: Springer Berlin Heidelberg
Nyberg JB, Marcot BG, Sulyma R (2006) Using Bayesian belief networks in adaptive management. Can J for Res 36(12):3104–3116
Pan Y, Zeng X, Xu H, Sun Y, Wang D, Wu J (2020) Assessing human health risk of groundwater DNAPL contamination by quantifying the model structure uncertainty. J Hydrol 584:124690
Pankow JF, Feenstra S, Cherry JA, Ryan MC (1996) Dense chlorinated solvents in groundwater: background and history of the problem, in Dense Chlorinated Solvents and other DNAPLs in Groundwater: History, Behavior, and Remediation, edited by Pankow. Cherry, Waterloo Press, Portland Oregon, J.F. and J.A, p 522
Pearl J (1988) Probabilistic reasoning in intelligent systems: networks of plausible inference. Morgan Kaufmann Publishers Inc, San Francisco, CA
Reckhow KH (1999) Water quality prediction and probability network models. Can J Fish Aquat Sci 56(7):1150–1158
Rossabi J, Jackson DG, Vermeulen HH, Looney BB (2022) Dense non-aqueous phase liquid chlorinated contaminant detected far from the source release area in an aquifer. Commun Earth Environ 3(1):223. https://doi.org/10.1038/s43247-022-00556-w
Sinha S (2016) A pedagogical walkthrough of computational modeling and simulation of Wnt signaling pathway using static causal models in MATLAB. EURASIP J Bioinf Syst Biol 2017(1):1–30
Snowden DJ, Boone ME (2007) A leader’s framework for decision making. Harv Bus Rev 85(11):68
Song Q, Song L (2023) A quantitative analysis of chemical plant safety based on Bayesian network. Processes 11(2):525. https://doi.org/10.3390/pr11020525
Spence PL, Jordan SJ (2013) Effects of nitrogen inputs on freshwater wetland ecosystem services–A Bayesian network analysis. J Environ Manage 124:91–99
Suchomel EJ, Kavanaugh MC, Mercer JW, Johnson PC (2014) The source zone remediation challenge. In: Kueper BH, Stroo HF, Vogel CM, Ward CH (eds) Chlorinated solvent source zone remediation. Springer Science+Business Media, New York, p 713
Taylor D, Hicks T, Champod C (2016) Using sensitivity analyses in Bayesian Networks to highlight the impact of data paucity and direct future analyses: a contribution to the debate on measuring and reporting the precision of likelihood ratios. Sci Justice 56(5):402–410
Tighe M, Pollino CA, Wilson SC (2013) Bayesian networks as a screening tool for exposure assessment. J Environ Manage 123:68–76
USACE (2012) Conceptual Site Models, EM 200–1–12, 76 pp, https://www.publications.usace.army.mil/portals/76/publications/engineermanuals/em_200-1-12.pdf, last accessed 8/28/2023
USEPA (1998) Guidelines for Ecological Risk Assessment. EPA/630/R-95/002F. United States Environmental Protection Agency, Risk Assessment Forum, Washington, DC
USEPA (2011) Environmental cleanup best management practices: effective use of the project life cycle conceptual site model, office of solid waste and emergency response, EPA 542-F-11–011, 12 pp, https://www.epa.gov/remedytech/environmental-cleanup-best-management-practices-effective-use-project-life-cycle, last accessed 8/28/2023
Acknowledgements
Thank you to Katherine Loizos for graphics support and for develo** the pictorial conceptual site model. We also thank Randy Parker and Brian Dyson for providing helpful comments on earlier drafts of the manuscript. The views expressed in this article are those of the author(s) and do not necessarily represent the views or the policies of the U.S. Environmental Protection Agency. Any mention of trade names, manufacturers, or products does not imply an endorsement by the United States Government or the U.S. Environmental Protection Agency. EPA and its employees do not endorse any commercial products, services, or enterprises.
Funding
The authors were supported by the U.S. Environmental Protection Agency during the course of this research.
Author information
Authors and Affiliations
Contributions
Conceptualization: MB, JC. Methodology: CA, MB, JC, RH, LR. Writing—original draft: JC. Writing—review and editing: CA, MB, JC, RH, LR. Visualization: CA, MB, JC, RH, LR. All authors read and approved the final manuscript.
Corresponding author
Ethics declarations
Ethics approval
Not applicable.
Consent to participate
Not applicable.
Consent for publication
Not applicable.
Competing interests
The authors declare that they have no competing interests.
Additional information
Responsible Editor: Marcus Schulz
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Carolyn Acheson is retired.
Rights and permissions
About this article
Cite this article
Carriger, J.F., Brooks, M.C., Acheson, C. et al. Examining site intervention efficacy and uncertainties with conceptual Bayesian networks: preventing offsite migration of DNAPL and contaminated groundwater. Environ Sci Pollut Res (2024). https://doi.org/10.1007/s11356-024-34340-4
Received:
Accepted:
Published:
DOI: https://doi.org/10.1007/s11356-024-34340-4