The EPA’s Citizen’s Guide to Cleanup Technologies Series 7: Vertical Engineered Barriers

Jun 13, 2017

Environmental Enlightenment #208

See our Newsletter, Environmental Enlightenment #200, for introduction to one highly valuable, plainly written series of Citizen’s Guides published by the EPA at

With this issue we introduce the EPA’s Citizen’s Guide to Phytoremediation. You can reach it through the hyperlink under the blue header below.

When all else fails, we contain.

Con-means together and –tain comes from Latin tenere (to hold). Thus, when a plume of contamination is contained, it is being held together in one place.

We contain wildfires.

Two Minnesota Army National Guard helicopters and 12 soldiers from the Minnesota National Guard’s 34th Combat Aviation Brigade activated to support wildfire containment near Nimrod, MN (, licensed under Creative Commons Attribution 2.0 Generic License. 

We contain plagues.

We may choose to contain unruly persons.

Illustration by Charlotte Schaller-Mouillot in March 1916 issue of La Baïonnette (French journal published from 1915 to 1918,

And, at times, mostly as a last resort, we elect to contain contamination from spreading elsewhere.

Go to the EPA’s Citizen’s Guide to Vertical Engineered Barriers at for the rest. It is simple and fun to read.

Photograph by Hans Splinter and licensed under Creative Commons Attribution-Share Alike 2.0 Generic License


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