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South and Southwest HSRC

L. Donald Dougherty

The Hazardous Substance Research Center/South and Southwest is a competitively awarded, peer-reviewed research consortium led by Louisiana State University with the cooperation of the Georgia Institute of Technology, Rice University, and Texas A&M University to address critical hazardous substance problems, especially as they relate to contaminated sediments. The South & Southwest Center was established in October 1991 under Section 311(d) of CERCLA to conduct research and technology transfer designed to promote risk-based management and control of hazardous substances for the nation and regions 4 and 6 the Environmental Protection Agency (EPA). The contaminated sediments and dredged materials of concern contain organics, metals, and conventional pollutants. These environmental contaminants are either suspended in the water column or stored on the bottom of rivers, bayous, lakes, harbors, estuaries, freshwater wetlands, and in ocean waters of the continental shelf. Research theme areas include: Assessing the physical, chemical, and biological processes influencing contaminant availability Evaluating and enhancing biotransformation processes in sediments Improving the science of risk management for contaminated sediments Complex environmental problems that face the nation are not easily addressed by conventional single-investigator, single-institution research efforts. The Center has the ability to assemble teams of researchers that cross departmental and institutional boundaries to better address these problems. Through its training and technology transfer activities, the center disseminates information about research advances to the public and private sectors. Some of these activities include one-day regulatory update conferences, technical briefs, workshops, an annual symposium, and an annual report.

Center Publications:

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Main Center Abstract:

HSRC (1989) - South and Southwest HSRC

Center Research Projects:

R825513C001 - Sediment Resuspension and Contaminant Transport in an Estuary.

R825513C002 - Contaminant Transport Across Cohesive Sediment Interfaces.

R825513C003 - Mobilization and Fate of Inorganic Contaminant due to Resuspension of Cohesive Sediment.

R825513C004 - Source Identification, Transformation, and Transport Processes of N-, O- and S- Containing Organic Chemicals in Wetland and Upland Sediments.

R825513C005 - Mobility and Transport of Radium from Sediment and Waste Pits.

R825513C006 - Anaerobic Biodegradation of 2,4,6-Trinitrotoluene and Other Nitroaromatic Compounds by Clostridium Acetobutylicum.

R825513C007 - Investigation on the Fate and Biotransformation of Hexachlorobutadiene and Chlorobenzenes in a Sediment-Water Estuarine System

R825513C008 - An Investigation of Chemical Transport from Contaminated Sediments through Porous Containment Structures

R825513C009 - Evaluation of Placement and Effectiveness of Sediment Caps

R825513C010 - Coupled Biological and Physicochemical Bed-Sediment Processes

R825513C011 - Pollutant Fluxes to Aquatic Systems via Coupled Biological and Physicochemical Bed-Sediment Processes

R825513C012 - Controls on Metals Partitioning in Contaminated Sediments

R825513C013 - Phytoremediation of TNT Contaminated Soil and Groundwaters

R825513C014 - Sediment-Based Remediation of Hazardous Substances at a Contaminated Military Base

R825513C015 - Effect of Natural Dynamic Changes on Pollutant-Sediment Interaction

R825513C016 - Desorption of Nonpolar Organic Pollutants from Historically Contaminated Sediments and Dredged Materials

R825513C017 - Modeling Air Emissions of Organic Compounds from Contaminated Sediments and Dredged Materials title change in last year to "Long-term Release of Pollutants from Contaminated Sediment Dredged Material"

R825513C018 - Development of an Integrated Optic Interferometer for In-Situ Monitoring of Volatile Hydrocarbons

R825513C019 - Bioremediation of Contaminated Sediments and Dredged Material

R825513C020 - Bioremediation of Sediments Contaminated with Polyaromatic Hydrocarbons

R825513C021 - Role of Particles in Mobilizing Hazardous Chemicals in Urban Runoff

R825513C022 - Particle Transport and Deposit Morphology at the Sediment/Water Interface

R825513C023 - Uptake of Metal Ions from Aqueous Solutions by Sediments

R825513C024 - Bioavailability of Desorption Resistant Hydrocarbons in Sediment-Water Systems.

R825513C025 - Interactive Roles of Microbial and Spartina Populations in Mercury Methylation Processes in Bioremediation of Contaminated Sediments in Salt-Marsh Systems

R825513C026 - Evaluation of Physical-Chemical Methods for Rapid Assessment of the Bioavailability of Moderately Polar Compounds in Sediments

R825513C027 - Freshwater Bioturbators in Riverine Sediments as Enhancers of Contaminant Release

R825513C028 - Characterization of Laguna Madre Contaminated Sediments.

R825513C029 - The Role of Competitive Adsorption of Suspended Sediments in Determining Partitioning and Colloidal Stability.

R825513C030 - Remediation of TNT-Contaminated Soil by Cyanobacterial Mat.

R825513C031 - Experimental and Detailed Mathematical Modeling of Diffusion of Contaminants in Fluids

R825513C033 - Application of Biotechnology in Bioremediation of Contaminated Sediments

R825513C034 - Characterization of PAH's Degrading Bacteria in Coastal Sediments

R825513C035 - Dynamic Aspects of Metal Speciation in the Miami River Sediments in Relation to Particle Size Distribution of Chemical Heterogeneity

R828773C001 - Bioturbation and Bioavailability of Residual, Desorption-Resistant Contaminants

R828773C002 - In-Situ Containment and Treatment: Engineering Cap Integrity and Reactivity

R828773C003 - Phytoremediation in Wetlands and CDFs

R828773C004 - Contaminant Release During Removal and Resuspension

R828773C005 - HSRC Technology Transfer, Training, and Outreach

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The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.

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