THe US Army Corps of Engineers is using ferns to reduce arsenic levels
in soil in a residential area of DC. At one site they reduced arsenic
levels in soil by 25% after 2 years. There's an article today in the
Washington Post. there's some concern they can only decontaminate the
top 1' of soil, but some people think they can reach lower. The ferns
are allowed to grow and then the fronds are clipped and disposed of.
they're trying to save the old trees in this neighborhood and don't want
to remove tons of soil which would kill the trees.
Wow, the army corps of engineers finally doing something good for the
environment.
Deborah Turton
In a message dated 8/26/04 1:00:16 PM Eastern Daylight Time,
DTURTON@PEOPLEPC.COM writes:
<< The ferns
are allowed to grow and then the fronds are clipped and disposed of. >>
Where are the fronds put? Are they just moving the arsenic from one place to
another?
Mary Ann
It's getting complexed into eventual humus, I suppose, which is much better
thatn having it free to leech down into an aquifer.
Or maybe it's just going to landfill.
billle
Behalf Of Deborah Turton
Sent: Thursday, August 26, 2004 12:25 PM
To: OGL@LSV.UKY.EDU
Subject: Re: ferns and aresenic
Mary,
The article didn't say what they were doing with the fronds.
Deborah
Mary,
The article didn't say what they were doing with the fronds.
Deborah
Mary Ann Mikulski wrote:
