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Environmental Health - Toxic Substances

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Microbial Degradation of Chloroethenes in Groundwater Systems

A field with old 55 gallon drums. A line of tree is in the background
Spent chlorinated solvents from an old dry-cleaning facility near Soldotna, Alaska, created a plume of chloroethenes in the subsurface. USGS scientists are studying the natural attenuation of the plume using a combination of biological and geochemical methods. The Kenai River can be seen through the trees in the background.

USGS scientist on the bank of the Kenai River, Alaska
Diffusion samplers were placed in the bed sediments of the Kenai River, AK, to monitor the biogeochemistry of a chloroethene plume as it discharges into the river.

USGS scientist on a platform next to a wellhead with sampling equipment. SUV is in the backgroud
USGS scientists studied the natural attenuation of a chlorinated-solvents plume at an old dry-cleaning facility near Soldonta, AK. Here groundwater is being sampled to assess redox conditions in the plume.

Groundwater sampling equipment with a flow-through chamber
A flow-through chamber is used to measure redox conditions (pH, Eh, temperature, .) in groundwater being pumped from a well in a naturally biodegrading plume of chloroethenes, Soldotna, AK.


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Page Last Modified: Wednesday, 05-Aug-2015 11:11:50 EDT