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“…Industry-Backed Legislation Would Bar the Use of Science Behind Hundreds of Environmental Protections
Industry-Backed Legislation Would Bar the Use of Science Behind Hundreds of Environmental Protections
Two bills in Congress would prohibit the Environmental Protection Agency from using hundreds of chemical assessments completed by its IRIS program in environmental regulations or enforcement.www.propublica.org
“… For decades, Republican lawmakers and industry lobbyists have tried to chip away at the small program in the Environmental Protection Agency that measures the threat of toxic chemicals.
Most people don’t know IRIS, as the program is called, but it is the scientific engine of the agency that protects human health and the environment. Its scientists assess the toxicity of chemicals, estimating the amount of each that triggers cancer and other health effects. And these values serve as the independent, nonpartisan basis for the rules, regulations and permits that limit our exposure to toxic chemicals.
Now IRIS faces the gravest threat to its existence since it was created under President Ronald Reagan four decades ago.
Legislation introduced in Congress would prohibit the EPA from using any of IRIS’ hundreds of chemical assessments in environmental rules, regulations, enforcement actions and permits that limit the amount of pollution allowed into air and water. The EPA would also be forbidden from using them to map the health risks from toxic chemicals. The bills, filed in both the U.S. Senate and House of Representatives earlier this year, are championed by companies that make and use chemicals, along with industry groups that have long opposed environmental rules. If it becomes law, the “No IRIS Act,” as it’s called, would essentially bar the agency from carrying out its mission, experts told ProPublica.
“They’re trying to undermine the foundations for doing any kind of regulation,” said William Boyd, a professor at UCLA School of Law who specializes in environmental law. Boyd noted that IRIS reports on chemicals’ toxicity are the first step in the long process of creating legal protections from toxic pollutants in air and water.
“If you get rid of step one, you’re totally in the dark,” he said. …”
Today, IRIS’ collection of more than 500 assessments of chemicals, groups of related chemicals, and mixtures of chemicals is the largest database of authoritative toxicity values in the world, according to Vincent Cogliano, a recently retired scientist who worked on IRIS assessments for more than 25 years.
From the beginning, industry scientists challenged IRIS with calculations that showed their chemicals to be less dangerous.
“There were a lot of pretty bitter battles,” said Cogliano, who remembers particularly intense opposition to the assessments of diesel engine exhaust and formaldehyde during the 1990s. Critiques of IRIS assessments intensified over the years and began to slow the program’s work. “It took so long to get through that there were fewer and fewer assessments,” said Cogliano.
In 2017, opposition to IRIS escalated further. Trump’s budget proposal would have slashed funding for the program. Although Congress funded IRIS and the program survived, some of its work was halted during his first presidency. Trump appointed a chemical engineer named David Dunlap to head the division of the EPA that includes IRIS.
Dunlap had challenged the EPA’s science on formaldehyde when he was working as the director of environmental regulatory affairs for Koch Industries. Koch’s subsidiary, Georgia-Pacific, made formaldehyde and many products that emit it. (Georgia-Pacific has since sold its chemicals business to Bakelite Synthetics.)
While Dunlap was at the EPA, work on several IRIS assessments was suspended, including the report on formaldehyde. IRIS completed that report last year.
That assessment proved controversial, as ProPublica documented in its investigation of the chemical late last year. In calculating the risks that formaldehyde can cause cancer, IRIS decided not to include the chance that the chemical can cause myeloid leukemia, a potentially fatal blood cancer. The EPA said IRIS made this decision because it lacked confidence in its calculation; the agency admitted that the omission drastically underestimated formaldehyde’s cancer risk. …”
