And now:Ish <[EMAIL PROTECTED]> writes:

[note: some addresses are blind copied]
Toxic Mercury Rains on U.S. Midwest
http://ens.lycos.com/ens/sep99/1999L-09-14-06.html
CHICAGO, Illinois, September 14, 1999 (ENS) - A new report reveals that the rain and 
snow falling on cities in the American Midwest contains levels of mercury that far 
exceed what the U.S. Environmental Protection Agency (EPA) considers safe. The 
National Wildlife Federation and 21 state and local partner organizations are 
launching a Clean the Rain Campaign today to help reduce the health risks from toxic 
mercury.

The report by the National Wildlife Federation (NWF) compares mercury contamination 
levels in rain to EPA safe levels for human health in 20 Midwestern cities and towns. 
Among the report's findings are mercury levels in rain over Chicago, Illinois that are 
as high as 42 times EPA safe levels; Detroit, Michigan rain with 65 times safe levels; 
and rain along the Illinois/Wisconsin border as high as 56 times safe levels.

Though emissions from factories and power plants have been cut significantly since 
this photo of Indiana Harbor was taken around 1960, emissions are still a major source 
of mercury pollution (Photo courtesy US Environmental Protection Agency, Region V)

"We usually think of rain as pure and clean, and that's the way it should be," said 
Mark Van Putten, president & CEO of the National Wildlife Federation. "But this report 
reveals that rain falling over Midwestern cities such as Detroit, Chicago and Duluth 
contains as much as 65 times the EPA ‘safe' level of mercury, which holds out 
extremely serious health implications for both humans and wildlife."

Mercury is a potent toxin. When ingested in even tiny amounts can cause devastating 
effects on the human nervous system, especially for children and the unborn. 
Associated illnesses include brain, lung and kidney damage and even death in humans. 
In wildlife, mercury is a reproductive hazard that can cause harmful effects on 
species such as frogs, rainbow trout, zebra fish, mallard and American black ducks, 
loons and terns.

Mercury is toxic to fish and the animals that eat them - including humans (Photo by 
Carole Y. Swinehart, courtesy Michigan Sea Grant Extension)

"With so much at stake for both people and wildlife, decisive action is needed right 
now to limit mercury emissions, because once mercury pollution goes up into the 
atmosphere, rain carries it right back down into the very water humans and wildlife 
depend on," said Peter Morman, of the Environmental Law and Policy Center.

The report is based on scattered monitoring of rain from various Midwestern sources. 
In Chicago, the University of Michigan Air Quality Laboratory collected 65 samples of 
rainwater from the Illinois Institute of Technology campus and measured mercury levels 
ranging from 5.4 parts per trillion to 74.5 parts per trillion. Average mercury levels 
were 12 times higher than EPA’s standard, and even the lowest level measured was more 
than four times higher than EPA safe levels.

"Nationally, more than a third of mercury emissions come from coal fired power plants, 
with the remainder coming from municipal waste incinerators and medical waste 
incinerators," said Morman. "In the Great Lakes region, coal combustion causes over 
half the mercury emissions."

Lake Michigan dunes with power plant in background (Photo courtesy National Park 
Service)

Coal contains trace amounts of mercury that are released into the air as it is burned 
for energy. Rain droplets can form around tiny particles of smog and soot, including 
mercury contaminants, and carry them back to the earth.

The technology to measure the traces of mercury captured by raindrops has only existed 
since the mid-1990s.

There are currently no limits on how much mercury coal burning power plants can emit, 
but the EPA is studying mercury pollution from the plants with an eye to setting 
limits.

When medical devices such as thermometers and blood pressure cuffs or household items 
like fluorescent lights, lamps and thermostats are discarded and burned, the residual 
mercury is emitted into the atmosphere.

"A drop of mercury as small as 1/70th of a teaspoon can contaminate a 25 acre lake to 
the point that the fish in it are unsafe to eat," said Beverly McClellan of the Lake 
Michigan Federation. "When you consider a typical 100 megawatt power plant emits about 
25 pounds of mercury a year, the potential for tremendous ecological and human health 
problems becomes alarmingly clear."

Incinerators like this one in Chicago can release mercury from medical waste and other 
sources (Photo courtesy Lake Michigan Federation)

The Clean the Rain Campaign calls on major industry to drastically reduce emissions 
and asks citizens to help cut mercury pollution by conserving energy, not purchasing 
consumer products that contain mercury, or if they do purchase them, disposing of them 
properly at EPA approved recycling centers.

The Campaign also calls on federal and state governments to more closely monitor 
mercury levels in rainfall. In several key locations, the National Wildlife Federation 
has pledged to pay for rain monitoring if governments fail to do so. Chicago, 
Cleveland, Detroit, Duluth and Gary, Indiana are the first cities that NWF has 
targeted for additional monitoring. NWF is working with the University of Michigan and 
the University of Minnesota to develop and implement rain monitoring programs. 
Monitoring for mercury in Chicago's rain ended in 1995, and has never been conducted 
in Gary.

"While the news of the danger raining down from our skies is alarming, much can be 
done at the local, state and national levels to reduce the risk," said Andy Buchsbaum, 
NWF's water quality projects manager. "State agencies and the U.S. EPA need to begin 
monitoring for mercury in rain in Chicago and Gary. We need to know what's in our 
rain."

The full report - "Clean the Rain, Clean the Lakes: Mercury in Rain Is Polluting The 
Great Lakes" - is available on line at: http://www.nwf.org/water/news/CTRexec.html

© Environment News Service (ENS) 1999. All Rights Reserved.
Reprinted under the Fair Use http://www4.law.cornell.edu/uscode/17/107.html doctrine 
of international copyright law.
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