Presentation: Surface Water and Groundwater Mixing in Alluvial Floodplains

May 24, 2019

Presented at the World of Coal Ash 2019 Conference—a significant issue for understanding Contaminant transport at coal ash facilities adjacent to rivers

By Joel Thompson, Peter Bell, and John Griggs

 

Many coal ash storage facilities are located in floodplains of major waterways. The interaction between groundwater and surface water in these areas is critical to understanding hydrogeology, proper design of groundwater monitoring networks, groundwater chemistry, and potential contaminant transport issues. Considerations include transient interaction between bank storage, upland groundwater and out-of-bank inundation. In this paper, we discuss a two-dimensional numerical flow and transport model to simulate the short-term fluctuations of river stage on mixing of surface and groundwater in the floodplain. 

About the Authors

Joel Thompson has worked with clients to provide key services such as; performance of groundwater flow and contaminant transport modeling, hydrogeologic investigation and model conceptualization, third party review, and statistical analysis of geologic, and groundwater chemistry data.

Peter Bell has over 14 years of experience as a hydrogeologist, he has expertise in groundwater flow modeling, light non-aqueous phase liquid (LNAPL) conceptual site models, capture zone evaluations and groundwater remediation.

John Griggs has more than 24 years of experience designing, costing, and managing the implementation of environmental assessments, hydrogeological investigations and remediation projects.

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