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Simulating Flood-Induced Contaminated Soil and Sediment Transport in Woodbridge, NJ
Citation:
Shabani, A., S. Woznicki, M. Mehaffey, M. Ramirez, L. Drumm, E. Signor, R. Vargas, D. Cutt, AND P. Whung. Simulating Flood-Induced Contaminated Soil and Sediment Transport in Woodbridge, NJ. N/A - The slides are for NJDEP Collaborator, Trenton, New Jersey, August 01, 2021.
Impact/Purpose:
Extreme weather (i.e., flood) events exert multiple stressors on communities, one being potentially contaminated water and sediment released from contaminated sites. Communities have expressed needs to understand flood-induced contaminants transport, especially with changing climate. Some regions and states lack information to readily assess and determine the contaminated sites’ and communities’ vulnerabilities to flooding, and many lack site specific flood impacts on contaminants transport data needed to inform cleanup actions to build community resiliency. In response to these needs, we partner with R3/NJDEP/R2 for a two-prong solution: (1) site-specific geospatial simulations of flood induced contaminant concentrations in sediment, soil and surface water, and (2) screening level metrics to characterize NPL sites and community vulnerabilities. This presentation addresses the site-specific geospatial simulations of flood induced sediment and associated contaminant transports in Woodbridge, NJ. The Product will be used by NJDEP/R2 RPMs and site managers to inform remedial planning, monitoring, cleanups and site associated community engagement.
Description:
The preliminary results show (1) Sewaren neighborhood appears to be further negatively impacted by category 4 storm surge in 100-yr flood event, (2) sediment depth transport pattern is not a good surrogate for redistribution patterns of contaminants in sediment, (3) hydrodynamic mixing of water, suspended sediment in water, and surface sediment is one of the primary drivers in redistributions of contaminants in sediment, and (4) initial spatial concentration of the contaminants of concern in surface sediment plays an important role in contaminant concentration changes at the end of flood simulation period.'