By Andrew J. Whelton for The Conversation.
Broadcast version by Nadia Ramlagan for Ohio News Connection for the Public News Service-Conversation collaboration. .

Headaches and lingering chemical smells from a fiery train derailment in East Palestine, Ohio, have left residents worried about their air and water - and misinformation on social media hasn't helped.

State officials offered more details of the cleanup process and a timeline of the environmental disaster during a news conference on Feb. 14, 2023. Nearly a dozen cars carrying chemicals, including vinyl chloride, a carcinogen, derailed on the evening of Feb. 3, and fire from the site sent up acrid black smoke. Officials said they had tested over 400 nearby homes for contamination and were tracking a plume of spilled chemicals that had killed 3,500 fish in streams and reached the Ohio River.

However, the slow release of information after the derailment has left many questions unanswered about the risks and longer-term impact. We put five questions about the chemical releases to Andrew Whelton, an environmental engineer who investigates chemical risks during disasters.

Let's start with what was in the train cars. What are the most concerning chemicals for human health and the environment long term, and what's known so far about the impact?

The main concerns now are the contamination of homes, soil and water, primarily from volatile organic compounds and semivolatile organic compounds, known as VOCs and SVOCs.

The train had nearly a dozen cars with vinyl chloride and other materials, such as ethylhexyl acrylate and butyl acrylate. These chemicals have varying levels of toxicity and different fates in soil and groundwater. Officials have detected some of those chemicals in the nearby waterway and particulate matter in the air from the fire. But so far, the fate of many of the chemicals is not known. A variety of other materials were also released, but discussion about those chemicals has been limited.

State officials disclosed that a plume of contamination released into the nearby creek had made its way into the Ohio River. Other cities get their drinking water from the river, and were warned about the risk. The farther this plume moves downstream, the less concentrated the chemical will be in water, posing less of a risk.

Long term, the greatest risk is closest to the derailment location. And again, there's limited information about what chemicals are present - or were created through chemical reactions during the fire.

It isn't clear yet how much went into storm drains, was flushed down the streams or may have settled to the bottom of waterways.

There was also a lot of combusted particulate matter. The black smoke is a clear indication. It's unclear how much was diluted in the air or fell to the ground.

How long can these chemicals linger in soil and water, and what's their potential long-term risk to humans and wildlife?

The heavier the chemical, often the slower it degrades and the more likely it is to stick to soil. These compounds can remain for years if left unaddressed.

After the Kalamazoo River oil pipeline break in Michigan in 2010, the U.S. Environmental Protection Agency excavated a tributary where the oil settled. We've also seen from oil spills on the coasts of Alaska and Alabama that oil chemicals can find their way into soil if it isn't remediated.

The long-term impact in Ohio will depend in part on how fast - and thoroughly - cleanup occurs.

If the heavily contaminated soils and liquids are excavated and removed, the long-term impacts can be reduced. But the longer removal takes, the farther the contamination can spread. It's in everyone's best interest to clean this up as soon as possible and before the region gets rain.

Booms in a nearby stream have been deployed to capture chemicals. Air-stripping devices have been deployed to remove chemicals from the waterways. Air stripping causes the light chemicals to leave the water and enter air. This is a common treatment technique and was used after an 2015 oil spill in the Yellowstone River near Glendive, Montana.

At the derailment site in Ohio, workers are already removing contaminated soil as deep as 7 feet (about 2 meters) near where the rail cars burned.

Some of the train cars were intentionally drained and the chemicals set on fire to eliminate them. That fire had thick black smoke. What does that tell you about the chemicals and longer-term risks?

Incineration is one way we dispose of hazardous chemicals, but incomplete chemical destruction creates a host of byproducts. Chemicals can be destroyed when heated to extremely high temperatures so they burn thoroughly.

The black smoke plume you saw on TV was incomplete combustion. A number of other chemicals were created. Officials don't necessarily know what these were or where they went until they test for them.

We know ash can pose health risks, which is why we test inside homes after wildfires where structures burn. This is one reason the state's health director told residents with private wells near and downwind of the derailment to use bottled water until they can have their wells tested.

The EPA has been screening homes near the derailment for indoor air-quality concerns. How do these chemicals get into homes and what happens to them in enclosed spaces?

Homes are not airtight, and sometimes dust and other materials get in. It might be through an open door or a window sill. Sometimes people track it in.

So far, the U.S. EPA has reported no evidence of high levels of vinyl chloride or hydrogen chloride in the 400 or so homes tested. But full transparency has been lacking. Just because an agency is doing testing doesn't mean it is testing for what it needs to test for.

Media reports talk about four or five chemicals, but the manifest from Norfolk Southern also listed a bunch of other materials in tanks that burned. All those materials create potentially hundreds to thousands of VOCs and SVOCs.

Are government officials testing for everything they should?

People in the community have reported headaches, which can be caused by VOCs and other chemicals. They're understandably concerned.

Ohio and federal officials need to better communicate what they're doing, why, and what they plan to do. It's unclear what questions they are trying to answer. For a disaster this serious, little testing information has been shared.

In the absence of this transparency, misinformation is filling that void. From a homeowner's perspective, it's hard to understand the true risk if the data is not shared.

Andrew J. Whelton wrote this article for The Conversation.

This collaboration is produced in association with Media in the Public Interest and funded in part by the George Gund Foundation.


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Residents of East Palestine, Ohio, say they continue to live with health problems, including rashes, nosebleeds and respiratory issues following last year's massive train derailment and chemical spill.

According to the Environmental Protection Agency, 177 tons of solid waste of solid waste and 68 million gallons of water have been transported out of East Palestine for disposal.

Jess Conard, Appalachia director for the advocacy group Beyond Plastics, said vinyl chloride is a key ingredient in making PVC plastic. She argued the disaster highlighted the need to reduce production of industrial plastic and better regulate all stages of the plastic life cycle. She added residents still do not have the resources needed to stay safe.

"We are also in desperate need of residential indoor and outdoor air monitoring and air assessments for our homes," Conard contended. "There are residents within the past month that have reported detections of vinyl chloride outside of their home."

Norfolk Southern recently agreed to a $600 million settlement in an attempt to resolve a string of lawsuits involving thousands of people.

If it gets approval from all parties, it would resolve all class-action claims by people and businesses who were within a 20-mile radius of the derailment site, and personal injury claims within 10 miles. In a statement on the company's website, the company stressed the settlement does not constitute any admission of liability, wrongdoing or fault.

Conard pointed out the settlement will not prevent another train-related environmental disaster from happening. She noted the amount of money in the proposed settlement will hardly leave a dent in the pockets of a company whose profits topped $8 billion last year.

"If the court accepts this settlement, it sets the precedent that there is a corporate price tag for poisoning communities," Conard asserted. "The court must uphold justice for the people."

Congress has stalled on passage of legislation to boost regulations around inspections and fines for railroad companies violating safety standards. Earlier this month, the Biden administration passed a new rule requiring freight operators to have at least two people on board, in an attempt to increase safety.

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Chemical plants in West Virginia and other states will be required to curb emissions of toxic, cancer causing pollutants - such as ethylene oxide, chloroprene and other chemicals - under a new Environmental Protection Agency rule.

Hundreds of facilities, most located near low-income or communities of color, will also have to collect air pollution data and submit it to the EPA.

The data will also be made available to communities, which Jeremy Symons - a senior advisor with the Environmental Protection Network - said is an important tool for transparency and environmental justice.

"Not only will this action by EPA reduce these dangerous toxic air pollutants by 96%," said Symons, "but they're also going to require chemical plants to install fenceline air-pollution monitors."

Research has shown that long-term exposure to ethylene oxide and chloroprene can increase the risk of certain types of cancer, such as lymphoma, leukemia, breast cancer and liver cancer.

Children are particularly at risk.

The Biden administration says the rule will slash more than 6,200 tons of toxic air pollution each year in affected regions.

Symons, a former EPA advisor, said the rules come after years of work by local community members and environmental organizations that have sounded the alarm on the impact of deadly air pollution.

"There's been especially high cancer rates in these communities," said Symons. "So it's really significant that EPA has taken action and gone into the communities that have not been protected as much as they should be in the past."

A handful of companies in West Virginia - including Chemours, Koppers and Altivia - will have to comply with the new rules.

Investigative reporting published in 2021 by Mountain State Spotlight and ProPublica have revealed how toxic chemical pollution has harmed the state's majority Black communities.

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People working for environmental justice are rallying today at the downtown Pittsburgh headquarters of U.S. Steel, voicing their concerns to company shareholders about creating a healthier future in the Monongahela Valley region.

Japan's Nippon Steel is buying U.S. Steel for more than $14 billion.

Duquesne Mayor Nickole Nesby, an environmental-justice organizer with the group 412Justice, said the asthma rate in the Mon Valley is four to five times higher than the national average. She pointed out they're being left out of important conversations about the sale and are urging better health protections.

"We are actually gathering to demand a seat at the table," she said. "We -- the communities which have been impacted by the pollutants for decades -- have not had a seat at the table. Our voice needs to be heard."

U.S. Steel has had a presence in the Mon Valley since 1901 and currently employs more than 3,000 workers. Nesby said the sale isn't supposed to affect local employment, as U.S. Steel has said it will keep the contract as it currently exists.

U.S. Steel's Mon Valley Works, which includes the Clairton Coke Works, is the biggest coke plant in the country.

NaTisha Washington, communications manager for the Breathe Project, said the plants have a long history of breaking air-quality rules and facing complaints. She added that the plants keep getting fined for exceeding pollution limits - and even have trouble getting new permits.

"There is no transparency with the communities about these air quality days being bad," she said. "No protections, no resources like air filters, or anything that's supporting residents that are affected by these bad-air days."

Washington added that money is being put into a clean-air fund and a Community Benefit Trust. But there has been no visible improvement to community health so far. She noted many Mon Valley residents are feeling the impacts of either poor air or water quality.

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