Environmental Health - Toxic Substances Hydrology Program
Highlights of research findings.
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Scientists found that naturally occurring arsenic in aquifer sediments was mobilized into groundwater and attenuated through reattachment to sediments within an underground petroleum plume. Understanding these patterns identifies anthropogenic factors that affect arsenic presence and magnitude in groundwater. ...
Dr. Isabelle M. Cozzarelli received the U.S. Department of Interior's second highest honorary award—the Meritorious Service Award—for her numerous contributions to understanding the biogeochemical controls of contaminant degradation in groundwater and near-surface environments. ...
USGS scientists studying two subsurface crude-oil spill sites in Minnesota measured concentrations of oil breakdown products (metabolites) at greater concentrations than parent compound concentrations. ...
Experimental field research simulating hydrocarbon spills by researchers from the USGS, Virginia Tech, and the University of St. Thomas showed that mixed ethanol and petroleum-based fuels increased the rate by which arsenic and other natural trace elements are released from aquifer sediments to groundwater when compared to petroleum-based fuels alone. ...
Changes in geochemistry from the natural breakdown of petroleum hydrocarbons in groundwater promote mobilization of naturally occurring arsenic from aquifer sediments into groundwater. This geochemical change can result in potentially significant and overlooked arsenic groundwater contamination. Arsenic is ...
Research at a 1979 crude oil spill from a ruptured pipeline has exposed and helped to overcome many challenges facing an effective, cost-efficient cleanup of crude oil, USGS scientists have found. The environmental release of crude oil occurred near ...
USGS studies at the Osage-Skiatook Petroleum Environmental Research (OSPER) Project, Oklahoma are featured in a special issue of Applied Geochemistry on environmental issues related to oil and gas exploration and production ...
USGS scientists discover recharge above petroleum contamination plumes affects how plumes grow and degrade in ground water ...
USGS scientists have developed a new method to predict the rate that benzene might spread in a contaminant plume undergoing natural attenuation ...
Dr. Cary Chiou, a researcher with the Toxic Substances Hydrology Program, has published a book entitled Partition and Adsorption of Organic Contaminants in Environmental Systems ...
All Science Features from this Investigation
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Crude Oil Contamination in the Shallow Subsurface Investigation—Bemidji, Minnesota—Home Page