On March 28, 2024, the U.S. Environmental Protection Agency (EPA) issued a final rule under the Toxic Substances Control Act (TSCA) to address to the extent necessary the unreasonable risk of injury to health presented by chrysotile asbestos based on the risks posed by certain conditions of use (COU). 89 Fed. Reg. 21970. According to the final rule, the injuries to human health include mesothelioma and lung, ovarian, and laryngeal cancers resulting from chronic inhalation exposure to chrysotile asbestos. The final rule prohibits the manufacture (including import), processing, distribution in commerce, and commercial use of chrysotile asbestos for chrysotile asbestos diaphragms in the chlor-alkali industry; chrysotile asbestos-containing sheet gaskets in chemical production; chrysotile asbestos-containing brake blocks in the oil industry; aftermarket automotive chrysotile asbestos-containing brakes/linings; other chrysotile asbestos-containing vehicle friction products; and other chrysotile asbestos-containing gaskets. It also prohibits the manufacture (including import), processing, and distribution in commerce for consumer use of aftermarket automotive chrysotile asbestos-containing brakes/linings; and other chrysotile asbestos-containing gaskets. The final rule specifies the compliance dates for these prohibitions. The final rule also includes disposal and recordkeeping requirements for these COUs. The final rule will be effective May 28, 2024.

Manufacturing, Processing, Distribution in Commerce, and Commercial Use of Chrysotile Asbestos Diaphragms in the Chlor-alkali Industry

As of the effective date of the final rule, all persons are prohibited from the manufacture (including import) of chrysotile asbestos, including any chrysotile asbestos-containing products or articles, for diaphragms in the chlor-alkali industry. Beginning five years after the effective date of the final rule, all persons are prohibited from processing, distribution in commerce, and commercial use of chrysotile asbestos for diaphragms in the chlor-alkali industry, except as provided in 40 C.F.R. Section 751.505(c) and (d).

Section 751.505(c) permits a person to process, distribute in commerce, and commercially use chrysotile asbestos for diaphragms in the chlor-alkali industry at no more than two facilities until eight years after the effective date of the final rule, provided that they meet certain conditions.

Section 751.505(d) permits a person who meets all of the criteria of that paragraph to process, distribute in commerce, and commercially use chrysotile asbestos for diaphragms in the chlor-alkali industry at not more than one facility until 12 years after the effective date of the final rule, provided that they meet certain conditions.

Certification of Compliance for Chlor-alkali Industry

A person who processes, distributes in commerce, or commercially uses chrysotile asbestos for diaphragms in the chlor-alkali industry between five years and eight years after the effective date of the final rule must certify to EPA their compliance with all requirements of Section 751.505(c) and provide the following information to EPA: identification of the facility (or facilities) at which, by five years after the effective date of the final rule, the person has ceased all processing, distribution in commerce, and commercial use of chrysotile asbestos; identification of the one or two facilities (no more than two facilities) at which the person will after five years after the effective date of the final rule continue to process, distribute in commerce, and commercially use chrysotile asbestos diaphragms while the facility or facilities are being converted to non-chrysotile asbestos membrane technology; and the name of the facility manager or other contact.

A person who processes, distributes in commerce, or commercially uses chrysotile asbestos for diaphragms in the chlor-alkali industry between eight and 12 years after the effective date of the final rule must certify to EPA their compliance with all requirements of Section 751.505(d) and provide the following information to EPA: identification of the facility at which the person has ceased all processing, distribution in commerce, and commercial use of chrysotile asbestos after five years after the effective date of the final rule but no later than eight years after the effective date of the final rule; identification of the facility at which the person will between eight years after the effective date of the final rule and no later than 12 years continue to process, distribute in commerce, and commercially use chrysotile asbestos diaphragms while the facility is being converted to non-chrysotile asbestos membrane technology pursuant to Section 751.505(d); and the name of the facility manager or other contact.

Other Prohibitions of and Restrictions on the Manufacturing, Processing, Distribution in Commerce, and Commercial Use of Chrysotile Asbestos

Prohibition on Manufacture (Including Import), Processing, Distribution in Commerce, and Commercial Use of Chrysotile Asbestos for Chrysotile Asbestos-Containing Sheet Gaskets in Chemical Production

Beginning two years after the effective date of the final rule, all persons are prohibited from manufacturing (including importing), processing, distributing in commerce, and commercial use of chrysotile asbestos, including any chrysotile asbestos-containing products or articles, for use in sheet gaskets for chemical production, except as provided in Section 751.509(b) and (c). Any sheet gaskets for chemical production that are already installed and in use as of the applicable compliance date are not subject to this distribution in commerce and commercial use prohibition, however.

Section 751.509(b) allows the commercial use of chrysotile asbestos sheet gaskets for titanium dioxide production past the general two-year prohibition; any person may use chrysotile asbestos sheet gaskets for titanium dioxide production until five years after the effective date of the final rule. EPA notes that this provision applies only to commercial use; manufacturing (including import), processing, and distribution in commerce must cease after two years, pursuant to Section 751.509(a).

Section 751.509(c) allows the commercial use of chrysotile asbestos sheet gaskets for processing of nuclear material past the general two-year prohibition: any person who meets the applicable criteria in the paragraph may commercially use chrysotile asbestos sheet gaskets for processing nuclear material until five years after the effective date of this final rule. At the Department of Energy’s Savannah River Site, use may continue until the end of 2037. EPA notes that this provision applies only to commercial use; manufacturing (including import), processing, and distribution in commerce must cease after two years. Section 751.509(c) requires that, beginning 180 days after the effective date of the final rule, all persons commercially using chrysotile asbestos sheet gaskets for processing nuclear material must have in place exposure controls expected to reduce exposure of potentially exposed persons to asbestos, and provide potentially exposed persons in the regulated area where chrysotile asbestos sheet gasket replacement is being performed with a full-face air purifying respirator with a P-100 (HEPA) cartridge (providing an assigned protection factor of 50), or other respirators that provide a similar or higher level of protection to the wearer.

Prohibition on Manufacture (Including Import), Processing, Distribution in Commerce, and Commercial Use of Chrysotile Asbestos-Containing Brake Blocks in the Oil Industry; Aftermarket Automotive Chrysotile Asbestos-Containing Brakes/Linings; Asbestos-Containing Vehicle Friction Products; and Other Asbestos-Containing Gaskets

Beginning 180 days after the effective date of the final rule, all persons are prohibited from manufacturing (including importing), processing, distribution in commerce, and commercial use of chrysotile asbestos, including any chrysotile asbestos-containing products or articles, for commercial use of: oilfield brake blocks; aftermarket automotive brakes and linings; other vehicle friction products; and other gaskets. Any aftermarket automotive brakes and linings, other vehicle friction products, and other gaskets that are already installed and in use as of 180 days after the effective date of the final rule are not subject to this distribution in commerce and commercial use prohibition.

Prohibition on Manufacture (Including Import), Processing, and Distribution in Commerce for Aftermarket Automotive Chrysotile Asbestos-Containing Brakes/Linings and Other Asbestos-Containing Gaskets for Consumer Use

Beginning 180 days after the effective date of the final rule, all persons are prohibited from the manufacturing (including importing), processing, and distribution in commerce of chrysotile asbestos, including any chrysotile asbestos-containing products or articles, for consumer use of: aftermarket automotive brakes and linings; and other gaskets. Any aftermarket automotive brakes and linings and other gaskets that are already installed and in consumer use as of 180 days after the effective date of the final rule are not subject to this distribution in commerce prohibition.

EPA notes that this prohibition does not apply to the consumer use of any chrysotile asbestos-containing aftermarket automotive brakes and linings and other gaskets. EPA states that its authority to regulate commercial use under TSCA Section 6(a)(5) does not extend to consumer use of chemical substances or mixtures. According to EPA, the prohibition on the upstream manufacturing, processing, and distribution of chrysotile asbestos aftermarket automotive brakes and linings and other gaskets for consumer use “will remove these products from the consumer market and over time eliminate their use as these products wear out and are replaced, or the vehicles in which they are components are retired from use.”

Interim Workplace Controls of Chrysotile Asbestos Exposures

For most of the COUs where, pursuant to the final rule, the prohibition on processing and industrial use will take effect in five or more years after the effective date of the final rule, EPA requires owners or operators to comply with an eight-hour existing chemical exposure limit (ECEL), beginning six months after the effective date of the final rule. EPA notes that this requirement applies to the following COUs:

• Processing and industrial use of chrysotile asbestos in bulk form or as part of chrysotile asbestos diaphragms used in the chlor-alkali industry; and
• Industrial use of chrysotile asbestos sheet gaskets for titanium dioxide production.

Once a facility has completed the phase-out of chrysotile asbestos and no longer uses chrysotile asbestos in its operations, the interim requirements no longer apply.

EPA states that its intention “is to require interim workplace controls that address the unreasonable risk from chrysotile asbestos to workers directly handling the chemical or in the area where the chemical is being used until the relevant prohibitions go into effect.” EPA notes that its 2020 Risk Evaluation for Asbestos, Part 1: Chrysotile Asbestos (Asbestos Part I) “did not distinguish between employers, contractors, or other legal entities or businesses that manufacture, process, distribute in commerce, use, or dispose of chrysotile asbestos. For this reason, EPA uses the term “owner or operator” to describe the entity responsible for implementing the interim workplace controls in any workplace where an applicable COU subject to the interim workplace controls occurs. The term includes any person who owns, leases, operates, controls, or supervises such a workplace. EPA has proposed to amend 40 C.F.R. Section 751.5 to add a definition of “owner or operator” consistent with this description as part of its proposed TSCA Section 6(a) rules to regulate methylene chloride and perchloroethylene. In this final rule, EPA uses the same definition of “owner or operator” to apply to where it appears in the regulatory text for chrysotile asbestos.

EPA notes that, as mentioned in the proposed rule, TSCA risk management requirements could incorporate and reinforce requirements in Occupational Safety and Health Administration (OSHA) standards. For chrysotile asbestos, EPA states that its approach for interim controls seeks to align, to the extent possible, with certain elements of the existing OSHA standard for regulating asbestos under 29 C.F.R. Sections 1910.1001 and 1926.1101. According to EPA, the OSHA permissible exposure limit (PEL) and ancillary requirements “have established a long-standing precedent for exposure limit threshold requirements within the regulated community.” EPA acknowledges that it is applying a “lower, more protective” ECEL derived from Asbestos Part I. EPA notes that it is not establishing medical surveillance requirements based on the ECEL to align with those under 29 C.F.R. Section 1910.1001, however, and that companies must continue to follow the medical surveillance requirements established by OSHA at 0.1 fiber per cubic centimeter of air as an eight-hour time-weighted average (TWA) level.

Disposal

EPA states that it is implementing the disposal provisions in the proposed rule without significant changes. EPA notes that the disposal provisions at Section 751.513 cross reference existing EPA and OSHA regulations that address asbestos-containing waste disposal. EPA requires that for the chrysotile asbestos diaphragm COU, as well as oilfield brake blocks, other vehicle friction products, and any commercial use of other gaskets and aftermarket automotive brakes and linings COUs, regulated entities must adhere to waste disposal requirements in OSHA’s Asbestos General Industry Standard in 29 C.F.R. Section 1910.1001, including Section 1910.1001(k)(6) requiring waste, scrap, debris, bags, containers, equipment, and clothing contaminated with asbestos that are consigned for disposal to be disposed of in sealed impermeable bags or other closed, impermeable containers. For the chrysotile asbestos sheet gaskets in the chemical production COU, regulated entities must adhere to waste disposal requirements described in OSHA’s Asbestos Safety and Health Regulations for Construction in 29 C.F.R. Section 1926.1101.

EPA notes that additionally, for the chrysotile asbestos diaphragm COU, as well as oilfield brake blocks, other vehicle friction products, and any commercial use of other gaskets and aftermarket automotive brakes and linings, the final rule cross-references the disposal requirements of Asbestos National Emission Standards for Hazardous Air Pollutants (NESHAP) (40 C.F.R. Part 61, Subpart M) at 40 C.F.R. Section 61.150. EPA states that the asbestos NESHAP reduces exposure to airborne asbestos “by generally requiring sealing of asbestos-containing waste material from regulated activities in a leak-tight container and disposing of it in a landfill permitted to receive asbestos waste.” According to EPA, it is not cross-referencing this same NESHAP waste disposal provision for the disposal of chrysotile asbestos-containing waste from sheet gasket processing and use “because EPA did not find unreasonable risk for the disposal of sheet gaskets.”

EPA also requires that each manufacturer (including importer), processor, and distributor of chrysotile asbestos, including as part of products and articles for consumer uses subject to the final rule, dispose of regulated products and articles in accordance with specified disposal provisions. EPA states that these consumer uses are aftermarket automotive brakes and linings and other gaskets. EPA notes that these consumer use supply chain disposal requirements are consistent with those for disposers of aftermarket automotive brakes and linings and other gaskets intended for commercial use. EPA states that it “does not generally have TSCA section 6(a) authority to directly regulate consumer use and disposal, but under TSCA section 6(a) EPA may nonetheless regulate the disposal activity of suppliers of these products, including importers, wholesalers and retailers of asbestos-containing aftermarket automotive brakes and linings, and other gaskets.” The disposal requirements at Section 751.513 will take effect 180 days after the effective date of the final rule.

Recordkeeping

A general records provision at 40 C.F.R. Section 751.515(a) of the final rule requires that, beginning 180 days after the effective date of the final rule, all persons who manufacture (including import), process, distribute in commerce, or engage in industrial or commercial use of chrysotile asbestos must maintain ordinary business records, such as invoices and bills-of-lading related to compliance with the prohibitions, restrictions, and other provisions of this rulemaking and must make them available to EPA for inspection. Section 751.515(b) addresses recordkeeping for certifications of compliance for the chlor-alkali industry required under Section 751.507 of the rule: persons must retain records for five years to substantiate certifications required under that provision and must make them available to EPA for inspection.

Section 751.515(c) of the final rule requires retention of records for interim workplace controls of chrysotile asbestos exposures. The final rule requires owners or operators subject to the exposure monitoring provisions of Section 751.511(c) to document and retain records for each monitoring event. Additionally, Section 751.515(c) requires that owners or operators subject to the interim workplace controls described in Section 751.511 retain certain records.

Section 751.515(d) requires the retention of disposal records. Each person, except a consumer, who disposes of any chrysotile asbestos and any chrysotile asbestos-containing products or articles subject to Section 751.513, beginning 180 days after the effective date of the final rule, must retain in one location at the headquarters of the company, or at the facility for which the records were generated: any records related to any disposal of chrysotile asbestos and any chrysotile asbestos-containing products or articles generated pursuant to, or otherwise documenting compliance with, regulations specified in Section 751.513. All records under this rule must be retained for five years from the date of generation.

Commentary

Bergeson & Campbell, P.C. (B&C®) acknowledges the historic nature of the rule, but it must also be placed into context. First, the rule applies to the few, limited ongoing uses of chrysotile asbestos that were not banned in the 1980s. It does not apply to the asbestos types that may already be in place, such as in old buildings. A ban on the manufacture, import, processing, and use of chrysotile asbestos cannot erase other types of asbestos, including chrysotile asbestos, that are and have been in place for decades. EPA’s Asbestos Part 2 risk evaluation will address the potential risk from such legacy uses and associated disposal activities. That work is underway. Second, EPA concluded that for the limited, ongoing uses of chrysotile asbestos, the only way to mitigate the risk of ongoing import, processing, use, and disposal is to ban chrysotile asbestos, except for the narrow use in brakes on specialized, large cargo aircraft operated by the National Aeronautics and Space Administration (NASA).

In its risk evaluation, EPA concluded that the use of chrysotile asbestos in chlor-alkali production does not present an unreasonable risk if protective measures are used, such as engineering controls, glove boxes, and personal protective equipment (PPE). In the final risk management rule, EPA nevertheless argues that chrysotile asbestos must be banned because the necessary PPE may not be used correctly. If this logic prevails, EPA may be in the awkward situation of needing to ban every substance that it determines as presenting an unreasonable risk when PPE is not used, meaning that EPA will have to ban nearly every substance it reviews under TSCA Section 6 (at least for the foreseeable future) because it is likely that all substances that EPA will review in the next several decades will be sufficiently hazardous for EPA to conclude that the chemical substances present an unreasonable risk from routine, unprotected inhalation and/or dermal exposures. EPA seems to be saying that someone, somewhere, under some circumstances, may decide not to wear protective measures, or not wear PPE correctly and that because of this instance, EPA cannot reduce an unreasonable risk by imposing workplace protective measures. EPA might view asbestos as a special case, but EPA did not qualify its argument in the rule.

EPA’s cost benefit analysis is surprising: EPA estimates benefits from avoided cancer cases to be between $3,000 and $6,000 per year. This is surprising in that a hazardous chemical apparently leads to so little economic benefits if asbestos is banned. The modest value would appear to be evidence that ongoing uses of chrysotile asbestos are largely not a significant health risk. In comparison, EPA’s economic analysis estimated costs ranging from $34 million to $43 million per year of implementing the rule.

EPA’s progress with advancing its TSCA Section 6 rulemaking activities on chrysotile asbestos is commendable. There are, however, several issues with EPA’s Asbestos Part I that are still unresolved and will likely resurface as the bases for any potential challenges to EPA’s rule. The first issue is EPA’s use of the now rescinded 2018 Application of Systematic Review in TSCA Risk Evaluations (the 2018 SR Document). We previously discussed our concerns with EPA’s use of this approach in Asbestos Part I. The crux of the issue is that the U.S. National Academies of Sciences, Engineering, and Medicine (NASEM) reviewed the 2018 SR Document and concluded that “The OPPT approach to systematic review does not adequately meet the state-of-practice.” This conclusion supports that EPA did not fulfill its obligations of complying with the scientific standards under TSCA Section 26. For further discussion, see our memorandum dated April 7, 2022.

The second related issue is EPA’s derivation of an inhalation unit risk (IUR) for chrysotile asbestos and its subsequent use of the IUR for establishing an ECEL. EPA derived the IUR on textile worker populations from two facilities and stated the following in Asbestos Part I: “The epidemiologic studies that are reasonably available include populations exposed to chrysotile asbestos, which may contain small, but variable amounts of amphibole asbestos.” EPA’s use of these studies was controversial and included criticisms in the peer-reviewed literature with one group of experts pointing out that “All 8 cases of pleural cancer and mesothelioma in the examined populations arose in facilities where amphiboles were present.” The same group of experts also stated that “the suggested inhalation unit risk (IUR) for chrysotile asbestos was far too high since it was not markedly different than for amosite, despite the fact that the amphiboles are a far more potent carcinogen.”

It is unclear if EPA’s study selection for deriving the IUR and exclusion of other studies was due to a flawed systematic review process or other issues, such as favoring a pre-determined outcome. The same group of experts mentioned above stated the following about EPA’s peer review on the draft version of Asbestos Part I:

[A] key limitation of the EPA meeting was that the questions that the panelists were asked to address, termed “charge questions,” did not focus on the most pertinent aspects of the document. Thus, by asking questions that avoided the thorny topics regarding chrysotile asbestos which were often poorly focused, the EPA failed to obtain relevant topical insight from the advisory panel.

Readers may find the above statements implausible, yet EPA’s sponsored peer-review activities on formaldehyde supports that they are not. On August 9, 2023, NASEM issued its report titled Review of EPA’s 2020 Draft Formaldehyde Assessment. NASEM stated the following in its report:

The committee…was not charged with commenting on other interpretations of scientific information relevant to the hazards and risks of formaldehyde, nor did its statement of task call for a review of alternative opinions on EPA’s formaldehyde assessment.

The concern with limiting the scope of a peer review is that doing so, at a minimum, creates an appearance of favoring a pre-determined outcome and may ultimately undermine the integrity of the science used in EPA’s decision-making. Either outcome is inconsistent with the scientific standards under TSCA Section 26 and EPA’s recently updated draft Scientific Integrity Policy.

The third issue relates to EPA’s unreasonable risk determination in Asbestos Part I. EPA referenced its 1994 Guidelines for Statistical Analysis of Occupational Exposure Data (the 1994 Guidelines) as the justification for evaluating monitoring samples that were below the limit of detection (LOD). EPA stated that the 1994 Guidelines “call for replacing non-detects with the LOD or LOQ [limit of quantification] divided by two or divided by the square root of two, depending on the skewness of the data distributions.” EPA also stated that “more than half of the samples were non-detectable.” The approach in the 1994 Guidelines conflicts with EPA’s 2008 Framework for Investigating Asbestos-Contaminated Superfund Sites (the 2008 Framework), which states “[w]hen computing the mean of a set of asbestos measurements, samples that are ‘nondetect’ should be evaluated using a value of zero, not ½ the analytical sensitivity [footnote omitted].” EPA did not state its rationale for not using the 2008 Framework recommendations (i.e., replacing non-detects with zero). EPA is, however, aware of the 2008 Framework, as evidenced by its use of the 2008 Framework for estimating cancer risks for less than lifetime exposure from inhalation of chrysotile asbestos.

It is not clear whether the rule will be challenged, but B&C would not be surprised if impacted industries, non-governmental organizations, and other stakeholder groups bring suit. The scientific methods and documents supporting this rule have been publicly challenged specifically, as discussed above, and generally by other expert academics in the field. This is, after all, the first final rule under TSCA Section 6(a) and will be precedent setting for other risk management rules. This rule is not just about asbestos; it reflects how EPA will manage risks for existing chemical substances EPA identifies as high-priority substances under TSCA Section 6. Stay tuned.

©2024 Bergeson & Campbell, P.C. by: Lynn L. Bergeson, Lisa M. Campbell of Bergeson & Campbell, P.C. For more news on the EPA Chrysotile Asbestos Rule, visit the NLR Environmental, Energy, & Resources section.