Friday 3rd of May 2024

all fall down .....

all fall down .....

An environmental disaster of epic proportions just happened in Tennessee. Monday night 2.6 million cubic yards (the equivalent of 525.2 million gallons, 48 times more than the Exxon Valdez spill by volume) of coal ash sludge broke through a dike of a 40-acre holding pond at TVA’s Kingston coal-fired power plant covering 400 acres up to six feet deep, damaging 12 homes and wrecking a train.  

According to the EPA the cleanup will take at least several weeks, but could take years. Officials also said that the magnitude of this spill is such that the entire area could be declared a federal superfund site.  

Apart from the immediate physical damage, the issue is what toxic substances are in that sludge: Mercury, arsenic, lead, beryllium, cadmium. Though officials said the amounts of these poisons in the sludge could not be determined on Monday, they could (at the mild end) irritate skin or trigger allergies or (longer term) cause cancer or neurological problems. This toxic sludge got into the Emory River, a tributary of the Clinch and Tennessee Rivers: The water supply for Chattanooga, Tennessee as well as millions of people living downstream in Alabama, Tennessee and Kentucky. TVA says that as yet the spill (which they are characterizing as a mudslide or landslide, but frankly it's still toxic...) has not affected the water quality in the Emory River. 

http://www.treehugger.com/files/2008/12/tennessee-coal-ash-slurry-spill-48-times-bigger-than-exxon-valdez-spill.php

feeling safe .....

Company spinners were quick to say that the coal ash spill in Tennessee was harmless, but records prove otherwise: 

In a single year, a coal-fired electric plant deposited more than 2.2 million pounds of toxic materials in a holding pond that failed last week, flooding 300 acres in East Tennessee, according to a 2007 inventory filed with the Environmental Protection Agency. 

And, this isn't no sorta-kinda-toxic, either: 

The inventory, disclosed by the Tennessee Valley Authority on Monday at the request of The New York Times, showed that in just one year, the plant’s by-products included 45,000 pounds of arsenic, 49,000 pounds of lead, 1.4 million pounds of barium, 91,000 pounds of chromium and 140,000 pounds of manganese. Those metals can cause cancer, liver damage and neurological complications, among other health problems. 

Oh, and don't forget this little fact: 

And the holding pond, at the Kingston Fossil Plant, a T.V.A. plant 40 miles west of Knoxville, contained many decades’ worth of these deposits. 

But, other than that—the spill is harmless!

trust who .....

The Environmental Protection Agency has found high levels of arsenic and heavy metals in two rivers in central Tennessee that are near the site of a spill that unleashed more than a billion gallons of coal waste.

The agency said it found "several heavy metals" in the water in levels that are slightly above safe drinking-water standards but "below concentrations" known to be harmful to humans.

"The one exception may be arsenic," the agency said in a letter to an affected community. "One sample of river water out of many taken indicated concentrations that are very high and further investigations are in progress."

http://www.cnn.com/2008/US/12/29/tennessee.sludge/index.html