The science has been
in for some time now, that the surface mining of coal, particularly the
large-scale plundering that is mountaintop removal, increases conductivity in
adjacent streams. As of today, a federal judge has ruled that increased
conductivity resulting from mountaintop removal is damaging streams in West
Virginia.
Citing
what he said was “extensive scientific evidence,” U.S. District Judge Robert C.
Chambers ruled that mines owned by Alpha Natural Resources in Boone and
Nicholas counties have “caused or materially contributed to a significant
adverse impact” to streams near to the mountaintop mines. The judge said that
the discharge from the mines had altered the chemistry of the streams and left
them “unquestionably biologically impaired,” with the abundance of aquatic life
“profoundly reduced.”
The
case, brought by the Ohio Valley Environmental Coalition, the West Virginia
Highlands Conservancy and the Sierra Club, was heard in the U.S. District Court
in Huntington, West Virginia and augured on the increased conductivity of
stream water that is caused by the surface mining of coal, particularly
mountaintop removal.
As
the term implies, conductivity is the ability of an electrical current to pass
through water. Water that has high conductivity usually contains inorganic
dissolved solids, such as chlorides, nitrates, sulfates, and phosphates, as
well as sodium, magnesium, calcium, iron, and aluminum. Most stream water will
have these substances at some level, but when any one of them, or several of them,
increase enough to significantly raise water’s conductivity beyond a certain
point, it’s usually bad for the organisms in that body of water.
Aqueous
conductivity is measured in microsiemens per cubic
centimeter (uS/cm2). The conductivity of a typical healthy stream will be
between 150 and 500 uS/cm2. Conductivity over 500 uS/cm2 will lead to
ecological impairment and a loss of biological diversity. High
conductivity will also mean that the water in the stream is not fit for human
consumption.
There
is some good science associating mountaintop mining with increasing
conductivity in nearby streams. Also, Ken Ward at the Charleston Gazette has
much more about this story. Needless to say, this sort of ruling should have
happened decades ago, before hundreds of mountains were sacrificed for the coal
companies, but this is still good news.