"Although the formaldehyde assessment has grave implications for public health, Trump administration officials refused to allow the EPA to release it."
"A 2017 draft assessment of formaldehyde that was suppressed by the Trump administration found that the chemical causes myeloid leukemia, according to several sources familiar with the document. The draft assessment concludes that 1 microgram of formaldehyde in a cubic meter of air increases the number of myeloid leukemia cases by roughly 3.5 in 100,000 people, more than three times the cancer risk in the assessment now in use. The EPA currently regulates formaldehyde using an outdated set of calculations, finalized in 1991, based on the risk of nasopharyngeal cancer. If the nasopharyngeal cancer and myeloid leukemia risks are combined, the cancer risk could be 4.5 times higher than the current value.
Although the suppressed assessment, produced by a division of the Environmental Protection Agency known as the Integrated Risk Information System, or IRIS, has grave implications for public health, Trump administration officials, including former EPA Administrator Andrew Wheeler, refused to allow the agency to release the assessment, several sources told The Intercept.
If the Biden EPA permits IRIS to finalize the assessment, which is among the most controversial in the agency’s history, other branches of the EPA will likely set regulatory limits based on the new risk value. IRIS values are used to determine safety thresholds for the amounts of the chemical permitted in air and water, emissions caps from industrial facilities, and guidance for cleanups. Such thresholds also alert exposed people to the dangers they face."