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http://dx.doi.org/10.7857/JSGE.2019.24.3.013

Numerical Study of Contaminant Pathway for Risk Assessment in Subsurface of Contaminated Sites  

Chang, Sun Woo (Korea Institute of Civil Engineering and Building Technology)
Moon, Hee Sun (Korea Institute of Geoscience and Mineral Resources)
Lee, Eunhee (Korea Institute of Geoscience and Mineral Resources)
Joo, Jin Chul (Hanbat National University)
Nam, Kyoungphile (Seoul National University)
Publication Information
Journal of Soil and Groundwater Environment / v.24, no.3, 2019 , pp. 13-23 More about this Journal
Abstract
The purpose of this study is to suggest conceptual models based on finite numerical method that can be used to assess contaminant transport through subsurface and estimate exposed concentration at contaminated site. This study tested various assumptions of the numerical models for contaminant transport in unsaturated and saturated zones to simulate the pathways to the human exposal point. For this purpose, models for seven possible scenarios of contaminant transport were simulated using the numerical code MODFLOW and MT3D. The simulation results that showed different peak concentrations and travel times were compared. In conclusion, the potential utility of the numerical models in the site specific risk analysis suggested as well as future research ramifications.
Keywords
Risk assessment; Exposed concentration; Numerical model; Groundwater; Contaminated site;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 ASTM, 2000, Standard guide for risk-based corrective action, standard E2081-00 (Reapproved 2004), ASTM International, West Conshohocken, PA, USA, P.95
2 KEI, 2006, Improving Coherence between Soil and Groundwater Quality Standards, RE-14.
3 Kim, M. and Park, J.-W., 2007, Contaminant Fate and Transport Modeling for Risk Assessment, J. Soil Groundw. Environ., 12(1), 44-52. (In Korean)
4 Korean Society of Soil and Groundwater Environment, 2008, Soil risk assessment, Donghwa Technology Publishing Co.Paju, Korea. (In Korean)
5 Ministry of Environment, 2006, Soil contamination risk assessment guideline, No.283 (In Korean)
6 Mazzieri, F., Di Sante, M., Fratalocchi, E. et al., 2016, Modeling contaminant leaching and transport to groundwater in Tier 2 risk assessment procedures of contaminated sites, Environ Earth Sci, 75, 1247. https://doi.org/10.1007/s12665-016-6043-1   DOI
7 U.S. EPA., 1996b, Soil Screening Guidance: Technical Background Document. Office of Emergency and Remedial Response, Washington, DC. EPA/540/R-96/128. NTIS PB96-963502
8 McDonald, M.G. and Harbaugh, A.W., 1988, A Modular Three-dimensinal Finite-difference Ground-water flow model: Techniques of Water-Resources Investigations of the U.S. Geological Survey, Book 6, Chapter A1, 586p.
9 Ryu, H., 2010, Development of realistic risk assessment framework for organic contaminants incorporating desoption-limited bioavailability and dilution attenuation factors, Ph.D. Dissertation, Seoul National University.
10 U.S. EPA., 1996a, Soil Screening Guidance: User's Guide, Office of Emergency and Remedial Response, Washington, DC. EPA/540/R-96/018. NTIS PB96-963505.
11 Verginelli, I. and Baciocchi, R., 2013, Role of natural attenuation in modeling the leaching of contaminants in the risk analysis framework, J. Environ Manage, 14, 395-403. https://doi.org/10.1016/j.jenvman.2012.10.035.   DOI
12 Zheng C. and Wang P.P., 1999, MT3DMS: A modula threedimensional multispecies transport model for simulation of advection, dispersion, and chemical reactions of contaminants in groundwater system; Documentation and user's guide, Contract Report SERDP-99-1, US Army Corps of Engineers, Washington, DC, USA.