Tag Archive for: Test Orders

EPA Issues Test Order for PFAS 6:2 FTAc

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On October 9, 2024, EPA issued a test order under the Toxic Substances Control Act (TSCA) for the PFAS chemical 6:2 FTAc (CASRN 17527-29-6).  The order is the fifth issued under EPA’s National PFAS Testing Strategy, which was launched in 2021.

The order employs a tiered testing approach, as required by TSCA.  Studies on 6:2 FTAc’s physical and chemical properties and environmental fate and behavior will inform future testing on oral and inhalation health effects, reproductive and developmental toxicity, and bioaccumulation in fish.  The earliest test is due 255 days after the order took effect October 13, with most initial testing due within one year.

Depending on the results of hydrolysis testing, the companies subject to the order— Innovative Chemical Technologies, Chemours, Daikin America, Inc., Sumitomo Corp. of Americas, and Du Pont de Nemours and Co.—will also be required to conduct in vitro assays to assess skin absorption, genotoxicity, and/or mutagenicity.

According to an EPA press release, summaries of studies indicate 6:2 FTAc can “cause changes in blood cell counts, liver and kidney size, and animal behavior” in rodents.  However, EPA was unable to obtain the underlying data for these summaries and therefore determined that they did not meet the order’s data needs.

EPA also noted that 6:2 FTAc’s chemical structure “suggests that it may cause cancer.”  Like previous PFAS test orders, the agency plans to use the collected data to learn more about the potential human health effects of other structurally similar PFAS.

The order is the first issued since the D.C. Circuit’s July ruling in Vinyl Institute v. EPA, which vacated a test order due to insufficient justification in the public record.  The test order does not reference the case, which was discussed in a previous blog post.

6:2 FTAc is used to manufacture textiles, apparel, leather, and other basic organic chemicals.  Chemical Data Reporting indicates that 1–20 million pounds of 6:2 FTAc are manufactured annually.

Court Vacates EPA Test Order, Citing Incomplete Evidence in Public Record

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On August 28, 2024, the D.C. Circuit issued an order in Vinyl Institute v. EPA, a case challenging a Toxic Substances Control Act (TSCA) test order issued in March 2022.  The mandate signals that neither party intends to appeal the court’s July 5 ruling, which found EPA’s justification for the test order inadequate.

The test order, which required an avian reproduction study of 1,1,2-Trichloroethane, was vacated and remanded to EPA.  However, the panel noted several places in which additional EPA materials would have satisfied TSCA’s “substantial evidence” standard if they were included in the public record, suggesting that EPA would not necessarily be required to perform additional analyses to justify future test orders as long as the analyses were included in the record.

For example, the court ruled that EPA’s “conclusory statements” in the public record on why vertebrate testing was necessary were inadequate, but also said that other documents showed that EPA considered new approach methodologies (as required by TSCA).  However, the court ruled that these documents—although covered by EPA’s brief—were not part of the administrative record that was available to the public, and that therefore “they are not part of the record subject to our review.”

According to the decision, not all studies referenced in the statement of need accompanying the test order were explained or even identified.  Nor did EPA publicly explain why those studies’ findings could not be used to fill the data gap, the court said.

“EPA should have explained why it could not extrapolate mammalian chronic exposure data to avian chronic exposure in its Statement of Need description of reasonably available information,” Judge Karen LeCraft Henderson wrote.  “Identifying close but ultimately inapplicable studies and explaining, in the record, why it could not extrapolate other potentially relevant findings could constitute substantial evidence.”

However, the court upheld EPA’s decision to issue a test order rather than pursuing a rule or consent agreement, agreeing with EPA that timeliness in acquiring the data was sufficient justification. EPA initiated the risk evaluation for 1,1,2-Trichloroethane in December 2019 but has yet to issue a report on its findings.

Judge Henderson also agreed that EPA was not required to demonstrate that exposure may exist at potentially toxic levels before issuing a test order.  That would “reverse[]…TSCA’s allocation of burdens,” the decision states.

Judge Henderson was joined in full by Judge Florence Pan and in part by Judge Justin Walker.  A previous blog post on the case, written after the December 2023 oral argument, can be found here.

TSCA Test Order Issued for PFAS NMeFOSE

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On March 20, 2024, EPA issued a test order for a PFAS known as NMeFOSE (CASRN 24448-09-7).  The order, issued under section 4(a) of the Toxic Substances Control Act, requires 3M Co. and Wacker Chemical Corp. to conduct tiered testing on NMeFOSE.

NMeFOSE was selected for testing as a representative of a group of similar PFAS.  Although existing information on NMeFOSE was deemed insufficient, EPA “identified hazards for acute toxicity and specific target organ toxicity.”  NMeFOSE is expected to break down into a highly toxic PFAS known as PFOS, which also drove concerns.

In a press release, EPA stated that NMeFOSE “has been used widely in products, including clothing and carpet treatments as well as furniture coatings.”  The press release also noted that NMeFOSE can accumulate and that the PFAS has been found in the air and in biosolids.  No Chemical Data Reporting manufacturing information is available for the substance.

The first round of tests, which focus on physical and chemical properties, are due 365 to 390 days after the order’s effective date of March 25, 2024.  Subsequent testing will include assessments of NMeFOSE’s environmental fate, in vivo health effects, and reproductive toxicity, with specific testing requirements contingent on earlier results.

The order is the fourth issued under EPA’s National PFAS Testing Strategy.  The most recent prior order was for HFPO-DAF in August 2023.

Oral Arguments in Case Challenging TSCA Test Order

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On December 1, 2023, a panel of the D.C. Circuit heard oral arguments in Vinyl Institute v EPA.  The case marks the first legal challenge of EPA’s authority to administer Toxic Substances Control Act (TSCA) section 4 test orders since Congress granted EPA the authority in the 2016 Lautenberg Amendments.

The case revolves around an avian reproduction study mandated by EPA’s March 2022 test order for 1,1,2-Trichloroethane, a solvent currently undergoing TSCA risk evaluation.  The Vinyl Institute alleges that EPA failed to adequately demonstrate why the study is necessary, while EPA argues that the order met statutory requirements and is supported by substantial evidence.  Also at issue in the case is a TSCA section 19(b) motion filed by the petitioner to make additional submissions to the test order’s administrative record.

Oral arguments focused on the level of detail required in the test order’s statement of need.  The Vinyl Institute’s attorney argued that the statement of need was composed of conclusory statements that did not sufficiently explain EPA’s reasoning.  For example, he said that it is not possible to identify one of the studies cited by EPA in its explanation.  This received pushback from one judge, who said that he seemed to be asking for a level of specificity that may not be required by law.  EPA’s attorney argued that the test order is not statutorily required to be an “exhaustive decisional document,” and said that EPA is not obligated to explain why it believes certain existing studies were inadequate to fill the data need addressed by the order.  In response, one judge implied that the attorneys’ interpretations of the standard for test orders fall on the extreme ends of a spectrum—on one end, EPA would be required to list every piece of information in examined in its decision-making process, and on the other, EPA could simply say “take our word for it”—and said that the standard is probably located between them.

The attorneys also offered competing interpretations of Congress’s intent when it granted EPA the ability to administer test orders.  EPA’s attorney argued that the reason Congress gave EPA the authority to administer test orders was to make it easier for EPA to obtain necessary information, and that requiring high levels of detail in test orders would burden EPA and undermine that intent.  By contrast, the Vinyl Institute’s attorney said that Congress put in place “numerous guardrails to ensure that [EPA’s] test order authority is not abused.”

Because the avian reproduction study is currently in progress, one judge remarked that a ruling in the petitioner’s favor would need to be delivered before summer 2024 to avoid mootness.  Neither attorney had time to address the section 19(b) motion.

A previous Verdant Law blog post on the case, written prior to merits briefing, can be found here.

EPA Issues First Test Order for PFAS in Commercial Firefighting Foam

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EPA recently issued a test order under TSCA section 4 to select companies requiring that they develop and submit certain information on 6:2 fluorotelomer sulfonamide betaine, a PFAS. The order is part of the Agency’s National PFAS Testing Strategy which will evaluate a large number of PFAS for potential human and ecological effects as “most PFAS lack data for robustly characterizing their potential toxicity.

The test order was issued to Chemours Company, DuPont De Nemours Inc., National Foam Inc., and Johnson Controls Inc.  6:2 fluorotelomer sulfonamide betaine is used to make commercial firefighting foam and certain floor finishes.  The test order explains that EPA found insufficient data on 6:2 fluorotelomer sulfonamide betaine to determine or predict the effects on human health specifically by the inhalation route.  The order applies a tiered testing strategy.  EPA has ordered the companies to generate of data on certain physical-chemical properties (e.g., density, particle size, hydrolysis as a function of pH).  The Agency will use those data to determine whether further testing (e.g., inhalation toxicokinetic study, acute inhalation study) is needed.  Under TSCA section 4(a)(4), EPA is required to employ a tiered screening and testing process under which the results of screening-level tests or assessments of available information inform the decision as to whether additional tests are necessary.

EPA intends to issue additional test orders to other PFAS manufacturers in the coming months. A detailed overview of the activities involved in issuing a TSCA Section 4 order can be found here.