Gore shows Senators New Climate Slides

Al Gore testified before the U.S. Senate Committee on Foreign Relations at a hearing entitled "Addressing Global Climate Change: The Road to Copenhagen" on January 28, 2009.

His written testimony stated: "Most importantly, as long as we continue to depend on dirty fossil fuels like coal and oil to meet our energy needs, and dump 70 million tons of global warming pollution into the thin shell of atmosphere surrounding our planet, we move closer and closer to several dangerous tipping points which scientists have repeatedly warned – again just yesterday -- will threaten to make it impossible for us to avoid irretrievable destruction of the conditions that make human civilization possible on this planet." His full written testimony is here.

In addition to his testimony, he presented an update of his slide show. A video of Gore's slide presentation is shown below in 2 parts.

First Part:


Second Part:

TVA CEO takes Heat on Coal Ash Spill -- Senate Hearing calls for EPA Regulation

The head of the Tennessee Valley Authority pledged the federal electric utility would do a "first-rate job" cleaning up the mess left from last month's massive coal ash spill. But at a Congressional committee hearing to examine the spill he faced sharp criticism from senators unconvinced by his promises.

"You need to have a plan to clean this spill up and you don't have it yet," said Senator Barbara Boxer, a California Democrat and chair of the Senate Environment and Public Works Committee, which conducted the hearing. "People will never feel safe there again."

[click image to enlarge]

To minimize dust and erosion, TVA is spreading grass seed and fertilizer, as well as a liquid dust suppressant on the ashy sludge. Boxer said TVA should be doing more than it currently is doing to clean up the area. "This isn't a harmless mud," she said. "Seeding the ground with grass is not a permanent solution. Cleanup can be done right or it can be a ticking timebomb."

TVA President and CEO Tom Kilgore testified that the utility is committed to completely remediating the contaminated area and will work to compensate affected residents. Boxer pressed Kilgore on TVA's lack of a plan to deal with two river coves popular with residents. "We want to recover all that we can recover," Kilgore said. While TVA does not have plans to clean up the coves, the utility doesn't have "plans not to," he said.

"That's not an answer," Boxer responded. "That's not cleanup."

Boxer also questioned Kilgore about reports that TVA had been warned of the potential failure of the impoundment wall at least twice in the past five years, but balked at a $25 million project to secure the site. "You went with the cheapest fix, and now you have the most expensive problem," Boxer said. "The cost of that $25 million is going to seem like pennies compared to what it is going to cost to clean this up." Early estimates of cleanup costs are as high as $250 million.

Boxer said the spill highlights the need for federal regulations to govern the disposal of toxic coal ash, noting that state regulatory efforts have been inconsistent at best. "For nearly three decades, EPA has been looking the issue of how to regulate combustion waste," Boxer said. "The federal government has the power to regulate these wastes, and inaction has allowed this enormous volume of toxic material to go largely unregulated," she said.

Boxer said the ash shouldn't be held in ponds, where it can contaminate water supplies. Coal ash also has been placed in abandoned mines and quarries. In other cases, dry ash is held in lined landfills.

Stephen Smith, the director of the Southern Alliance for Clean Energy, called for federal regulation of coal combustion waste, saying that voluntary industry practices and state rules haven't prevented the contamination of land and water near disposal sites. "We absolutely need to keep ash out of the water," Smith said. "Storing it wet is unacceptable."

"It is critically important that protective standards for coal ash waste be established," Boxer said. "The EPA doesn't even need any legislation from us. They have the ability to regulate this and I see it is coming. I hope it is coming."

The full report is here.

Toxic Coal Ash Disaster raises Health Concerns

One Billion gallons of coal ash sludge, the residue from burned coal in water, surged out of a holding pond after an earthen retaining wall burst at a coal power plant in Harriman, TN on December 22, 2008 destroying homes and property, and contaminating waterways [click image to enlarge]. The 40 acre holding pond at the Kingston Fossil Plant, a coal-burning electrical power plant, contained decades worth of ash deposits piled 55 feet high. (see previous blog post for Map and more photos)

Coal ash has long been known to contain dangerous concentrations of heavy metals, but for days, Tennessee Valley Authority (TVA) officials maintained that the sludge released is not toxic. Residents feared for their health, and complained that the authority had been slow to issue information about the toxicity of the coal ash and sludge released into river water.

A week after the ash dam burst, TVA along with the Environmental Protection Agency (EPA) recommended avoiding direct contact with the ash sludge, and that children and pets should be kept away from it. The EPA also recommended that anyone exposed to the ash sludge should wash thoroughly with soap and water and wash the affected clothes separately from other garments.

Federal officials cautioned residents who use private wells or springs to stop drinking the water, and not use it for cooking or bathing. Arsenic in a sample taken from the nearby Emory River was higher than the maximum level allowed for drinking water. Elevated levels of arsenic can cause ailments ranging from nausea to partial paralysis, and long-term exposure has been linked to several types of cancer, according to the EPA. Sampling in the vicinity of the Kingston water plant, which is upstream of the spill, and of the water being served by Kingston showed no violations of drinking water standards. The EPA press release is here.

Residents were also concerned about breathing the ash particles if the massive ash deposits and mounds throughout the area dry out and become airborne. Initially, they were told by TVA President and CEO Tom Kilgore that wouldn't happen because it's rainy and damp. One week later, however, the TVA indicated that they will install sprinkler systems to moisten the ash.

Arsenic is not the only toxic chemical in coal ash. To get some sense of what else is in the ash and the quantities involved, the Institute for Southern Studies examined the Kingston facility's Toxics Release Inventories (TRI) filed with the EPA back to 1998 and included the 2007 TRI emissions data from the TVA website. Their findings are summarized in the table below:

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The coal ash releases since 1998 contain over 14 Million pounds of chemical pollutants, raising considerable concern about potential health risks.

Coal ash contains known human carcinogens including Arsenic, Chromium, Mercury, Nickel and polycyclic aromatic compounds, as well as suspected carcinogens including Lead and Cobalt. Mercury and Lead are toxic to the nervous system and can cause developmental problems. A number of the chemicals in the ash have been linked to reproductive problems. Barium, when ingested in drinking water can cause acute gastrointestinal disturbances and muscle weakness as well as kidney damage over time. Vanadium has been linked to respiratory problems, birth defects, and kidney and liver damage.

The Institute for Southern Studies notes limits to the data, including that it is self-reported by the company with no independent verification, looks at only select chemicals and excludes some pollutants found in coal such as radioactive elements, and only goes back to 1998 while Kingston plant has been in operation since 1955. Nonetheless, the data does give a sense of some chemicals of concern present in the ash and thus the potential health risks. The full report from the Institute for Southern Studies is here.

Tennessee Governor Phil Bredesen promised greater oversight of coal ash retention ponds after viewing the disaster on December, 31. "Burning fossil fuel for electricity is a dirty business," he said. "Everywhere this happens there are huge ash piles, there are environmental issues. My dream out of all of this is maybe this is an epiphany for TVA and for the country that some things have got to change", he said.

The Senate Committee on Environment and Public Works will hold a hearing January 8 on the Tennessee Valley Authority and the ash spill, and testimony will be provided by TVA President and CEO Tom Kilgore, environmental advocates and local officials who responded to the disaster.

UPDATE Friday, January 2, 2009: Independent tests of the river water near the Kingston power plant were performed at the Environmental Toxicology and Chemistry labs at Appalachian State University in Boone, NC. Scientists found Arsenic levels from the Kingston power plant intake canal at close to 300 times the allowable amounts in drinking water, while a sample from two miles downstream still revealed arsenic at approximately 30 times the allowed limits. Lead was present at between twice to 21 times the legal drinking water limits, and Thallium levels tested at three to four times the allowable amounts.

Toxicity levels of heavy metals in the water were deemed a cause for concern to humans, as well as for aquatic life's ability to survive and reproduce in waters with these levels. The full report is here and the river sites tested are shown in a Map here.

UPDATE #2: The EPA has finally disclosed it's quantitative test results on the river water. The water sample from the Emory River near the spill site showed total Arsenic levels 149 times the maximum acceptable level, total concentration of Lead five times above normal, and slightly elevated total levels of Beryllium, Cadmium and Chromium. Samples taken near the Kingston water treatment plant, which is upstream from the spill site, were found to be within the federal limits, except for Thallium, which was found at levels three times the maximum limit. The news report is here.