Quantcast
Environmental News for a Healthier Planet and Life

Help Support EcoWatch

Water Samples Show Disturbing Levels of Heavy Metals from Duke Energy Coal Ash Spill

Energy
Water Samples Show Disturbing Levels of Heavy Metals from Duke Energy Coal Ash Spill

[This is the third article in a four-part series. Read part one, read part tworead part four.]

Today Waterkeeper Alliance and Yadkin Riverkeeper issued the results of water sampling from the Dan River in the wake of the third largest coal ash spill in U.S. history. A certified laboratory analysis of Waterkeeper’s samples, completed today, reveals that the water immediately downstream of Duke Energy’s ash spill is contaminated with extremely high levels of arsenic, chromium, iron, lead and other toxic metals typically found in coal ash.

Late Monday afternoon Duke Energy reported that it spilled an estimated 50,000 to 82,000 tons of coal ash mixed with 27 million gallons of water into the Dan River near Eden, North Carolina, although Duke has not updated the initial spill estimates despite ongoing discharges for the last four days. Several groups have also criticized the state regulators for failing to alert the public of a massive toxic waste release into a drinking water source for at least 24 hours after they claim to have become aware of the spill.

On Feb. 4, Waterkeeper Alliance took water samples from a stretch of the Dan River downstream of the spill located between Eden, North Carolina and Danville, Virginia. [See the map of samples here.]

Coal ash is a waste product from coal combustion and presents a serious threat to aquatic ecosystems and drinking water because it contains heavy metals and other toxic compounds. Laboratory results of Waterkeeper’s samples, also show that, compared to the levels found in a “background” water sample taken upstream of the spill, arsenic levels immediately downstream of the spill are nearly 30 times higher, chromium levels are more than 27 times higher, and lead levels are more than 13 times higher because of Duke Energy’s coal ash waste.

Waterkeeper’s testing found an arsenic concentration in the polluted water immediately below the discharge of .349 mg/L. Arsenic is a toxic metal commonly found in coal ash and is lethal in high concentrations. The .349 mg/L concentration found in Waterkeeper’s sample is greater than Environmental Protection Agency’s (EPA) water quality criterion for protection of fish and wildlife from acute risks of injury or death. It is more than twice as high as EPA’s chronic exposure criterion for fish and wildlife, and is almost 35 times greater than the maximum contaminant level (MCL) standard that EPA considers acceptable in drinking water.

Waterkeeper Alliance also found a lead concentration in the polluted water of 0.129 mg/L. Lead is another metal commonly found in toxic coal ash. Lead poisoning can cause developmental delays and permanent damage in exposed infants and children, as well as kidney damage and high blood pressure in adults. In very high doses, lead poisoning can cause death. According to the Occupational Safety and Health Administration, lead poisoning in the blood causes damage to many systems in the human body, and that damage can arise after periods of exposure as short as days if the level of exposure is acute. The 0.129 mg/L concentration found immediately downstream of Duke Energy’s coal ash spill is more than double the EPA’s water quality criterion for protection of fish and wildlife from acute risks of injury or death. It is about 50 times greater than EPA's chronic exposure criterion for fish and wildlife, and more than 1,000 times greater than EPA's recommended action level to prevent contamination of drinking water.

Levels of other contaminants found in the sampling just below the discharge include: Manganese: .576 mg/L; Boron: .314 mg/L; Calcium: 34.7 mg/L; Zinc: .224 mg/L; and Iron: 84.6 mg/L. Even more troubling is that heavy metals released by Duke Energy are toxic and bio-accumulative. They will stay in the river, in its sediment, and in the bodies of fish and other animals for a long time to come.

“Duke could have avoided contaminating the Dan River and poisoning Virginia's water supplies if it had removed its toxic ash heaps years ago after being warned by EPA,” said Robert F. Kennedy, Jr., president of Waterkeeper Alliance.

“On Tuesday when I collected these samples, coal ash continued to spill out of the pipe into the Dan River,” said Donna Lisenby, Global Coal Campaign coordinator for Waterkeeper Alliance.

“Our sample crew on the Dan River today reports that there is still coal ash waste leaking out of the pipe. Waterkeeper Alliance is very concerned that there was a delay in the release of sample results from Duke Energy. They were aware of the spill and collected samples long before we did. Their failure to provide accurate, timely information to the public about the high levels of heavy metals contaminating the Dan River for days is extremely irresponsible.”

“The fact it took four days for Duke Energy to release heavy metals water test results is inexcusable,” says Waterkeeper Alliance Staff Attorney, Peter Harrison.

“These sample results raise great concern for the health and safety of our communities, river users and the wildlife in the Dan River Basin ecosystem.” said Tiffany Haworth, executive director of the Dan River Basin Association.

After Waterkeepers initiated enforcement actions for illegal coal ash water pollution at two Duke Energy coal plants in North Carolina last year, the state filed lawsuits accusing Duke of illegal pollution discharges from leaks in its coal ash ponds at all 14 of its coal-fired power plants in the state of North Carolina. This includes Duke’s plant on the Dan River, where the state accused Duke of engineering an illegal discharge point to channel contamination leaking out of the ash pond into the river without authorization. A 2009 EPA study labeled Duke’s 53-year old Dan River ash pond dams “significant hazard potential structures.” Field inspections found the dams leaking and their surfaces sliding.

Duke stopped generating electricity at the coal plant in 2012, however the ash remains impounded at the site. While utilities in South Carolina have settled Waterkeeper lawsuits and started cleaning up their leaking ash ponds, Duke has thus far refused to responsibly address their ongoing contamination of public water supplies.

The Dan River coal ash spill appears to be the third largest in U.S. history. In 2008, a billion gallons of ash slurry spilled into the Emory River from a Tennessee Valley Authority power plant in Kingston, Tennessee. In 2006, 100 million gallons of coal ash spilled into the Delaware River from PPL.

See additional images in this slideshow:

[blackoutgallery id="320266"]

Visit EcoWatch’s COAL and WATER pages for more related news on this topic.

EcoWatch Daily Newsletter

This image of the Santa Monica Mountains in California shows how a north-facing slope (left) can be covered in white-blooming hoaryleaf ceanothus (Ceanothus crassifolius), while the south-facing slope (right) is much less sparsely covered in a completely different plant. Noah Elhardt / Wikimedia Commons / CC by 2.5

By Mark Mancini

If weather is your mood, climate is your personality. That's an analogy some scientists use to help explain the difference between two words people often get mixed up.

Read More Show Less
Flames from the Lake Fire burn on a hillside near a fire truck and other vehicles on Aug. 12, 2020 in Lake Hughes, California. Mario Tama / Getty Images

An "explosive" wildfire ignited in Los Angeles county Wednesday, growing to 10,000 acres in a little less than three hours.

Read More Show Less
Although heat waves rarely get the attention that hurricanes do, they kill far more people per year in the U.S. and abroad. greenaperture / Getty Images

By Jeff Berardelli

Note: This story was originally published on August 6, 2020

If asked to recall a hurricane, odds are you'd immediately invoke memorable names like Sandy, Katrina or Harvey. You'd probably even remember something specific about the impact of the storm. But if asked to recall a heat wave, a vague recollection that it was hot during your last summer vacation may be about as specific as you can get.

Read More Show Less

A film by Felix Nuhr.

Thailand has a total population of 5,000 elephants. But of that number, 3,000 live in captivity, carrying tourists on their backs and offering photo opportunities made for social media.

Read More Show Less
Scientists have found a way to use bricks as batteries, meaning that buildings may one day be used to store and generate power. Public Domain Pictures

One of the challenges of renewable power is how to store clean energy from the sun, wind and geothermal sources. Now, a new study and advances in nanotechnology have found a method that may relieve the burden on supercapacitor storage. This method turns bricks into batteries, meaning that buildings themselves may one day be used to store and generate power, Science Times reported.

Bricks are a preferred building tool for their durability and resilience against heat and frost since they do not shrink, expand or warp in a way that compromises infrastructure. They are also reusable. What was unknown, until now, is that they can be altered to store electrical energy, according to a new study published in Nature Communications.

The scientists behind the study figured out a way to modify bricks in order to use their iconic red hue, which comes from hematite, an iron oxide, to store enough electricity to power devices, Gizmodo reported. To do that, the researchers filled bricks' pores with a nanofiber made from a conducting plastic that can store an electrical charge.

The first bricks they modified stored enough of a charge to power a small light. They can be charged in just 13 minutes and hold 10,000 charges, but the challenge is getting them to hold a much larger charge, making the technology a distant proposition.

If the capacity can be increased, researchers believe bricks can be used as a cheap alternative to lithium ion batteries — the same batteries used in laptops, phones and tablets.

The first power bricks are only one percent of a lithium-ion battery, but storage capacity can be increased tenfold by adding materials like metal oxides, Julio D'Arcy, a researcher at Washington University in St. Louis, Missouri, who contributed to the paper and was part of the research team, told The Guardian. But only when the storage capacity is scaled up would bricks become commercially viable.

"A solar cell on the roof of your house has to store electricity somewhere and typically we use batteries," D'Arcy told The Guardian. "What we have done is provide a new 'food-for-thought' option, but we're not there yet.

"If [that can happen], this technology is way cheaper than lithium ion batteries," D'Arcy added. "It would be a different world and you would not hear the words 'lithium ion battery' again."

Aerial view of the Smithsonian Tropical Research Institute in Gamboa, Panama, where a new soil study was held, on Sept. 11, 2019. LUIS ACOSTA / AFP via Getty Images

One of the concerns about a warming planet is the feedback loop that will emerge. That is, as the planet warms, it will melt permafrost, which will release trapped carbon and lead to more warming and more melting. Now, a new study has shown that the feedback loop won't only happen in the nether regions of the north and south, but in the tropics as well, according to a new paper in Nature.

Read More Show Less

Trending

Marion County Sheriff Billy Woods speaks during a press conference after a shooting at Forest High School on April 20, 2018 in Ocala, Florida. Gerardo Mora / Getty Images

By Jessica Corbett

A sheriff in Florida is under fire for deciding Tuesday to ban his deputies from wearing face masks while on the job—ignoring the advice of public health experts about the safety measures that everyone should take during the coronavirus pandemic as well as the rising Covid-19 death toll in his county and state.

Read More Show Less