USGS - science for a changing world

Environmental Health - Toxic Substances

Research Projects

Contaminated Site Management and Remediation Investigations

Map of Toxics Program Study Sites
Locations of Toxics Program Subsurface Point-Source Contamination Investigations
(Click on map for larger version)

USGS scientist collecting an unsaturated-zone gas sample with a syringe from a vapor sampling well.
USGS scientist collecting an unsaturated-zone gas sample with a syringe from a vapor sampling well. The sample was used to study the natural attenuation of hydrocarbon vapors in the unsaturated zone -- from the Bemidji Site

The Toxics Program conducts intensive field investigations to study common classes of subsurface point-source contamination. (more information)

Contamination in Fractured-Rock Aquifers

Petroleum Related Contamination (including crude oil, gasoline and produced water)

Chlorinated Solvents Contamination

Contamination from Sources with Mixed Wastes (including landfills and wastewater discharge)

Complete listing of point-source investigations and projects >>

Other Subsurface Point-Source Investigations


Subsurface Point-Source Contamination Information

Meetings and Conferences

New Publications

New Publications

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Page Last Modified: Tuesday, 06-May-2014 14:36:53 EDT