Exposure Pathways
Exposure Pathways
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A Decade of Research on the Occurrence of Triazine Herbicides in the Environment Leads to a Unique Summary
U.S. Geological Survey (USGS) scientists completed a variety of groundbreaking studies on the occurrence, fate, and transport of triazine herbicides and their degradates throughout the 1990s. The results of these studies have been summarized and condensed into a USGS report and a book chapter providing, for the first time, a comprehensive snapshot of a decade of this research.
Multidisciplinary Approach to Remediating Watersheds Contaminated from Abandoned Mine Lands
Since the late 1990s, the U.S. Geological Survey (USGS) has conducted an Abandoned Mine Lands (AML) Initiative. The initiative provides technical assistance to support actions by Federal Land Management Agencies in the U.S. Department of the Interior and the U.S. Department of Agriculture (USDA) to remediate contamination associated with abandoned hard-rock mining sites. Acid drainage and toxic...
Ground-Water Recharge Affects Fate of Petroleum Contaminant Plumes
U.S. Geological Survey (USGS) scientists have discovered that rainwater recharging the water table above petroleum contamination plumes affects how plumes grow and the rate that petroleum products (in this case crude oil) degrade and weather in ground water. The amount of recharge affects the migration of oil in the subsurface, how chemicals dissolve from the oil into ground water, and the...