EPA releases interim guidance on data requirements for antimicrobial pesticides and food contact surfaces.

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Last week, EPA released interim guidance on the agency’s toxicology data requirements for antimicrobial pesticides on food contact surfaces. The interim guidance clarifies that the 200 parts per billion (ppb) threshold that triggers different data requirements is based on “total estimated daily dietary intake” for an individual and not the total amount of residue on a food item, which interpretation is in line with the policy of the U.S. Food and Drug Administration (FDA). Generally, if pesticide residues from food contact services are found in food at 200 ppb or less, EPA requires the submission of certain toxicology data, and additional data may be required if residues are greater than 200 ppb.

The interim guidance was issued as part of a March 2, 2015 settlement reached between the EPA and the American Chemistry Council (ACC) resolving the trade group’s challenge of EPA’s 2013 Final Rule on “Data Requirements for Antimicrobial Pesticides.” The settlement also requires that EPA propose, by July 2, 2015, a guidance document called the “Antimicrobial Pesticide Use Site Index,” which will be subject to public comment. In addition, by September 2, 2017, the agency must propose a “correction” to 40 C.F.R. § 158.2230(d) clarifying that the 200 ppb level relates to total estimated daily dietary intake, consistent with the FDA policy.

EPA releases initial analysis for TSCA Work Plan assessment of 1,4-dioxane.

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EPA today announced the release of its Problem Formulation and Initial Assessment for 1,4-dioxane, a widely used industrial solvent and ingredient in a variety of products, including cleaners, cosmetics, dyes and paint strippers, which the EPA has classified as “likely to be carcinogenic to humans.” The Problem Formulation and Initial Analysis, part of the agency’s Toxic Substances Control Act (TSCA) Work Plan risk assessment program, concludes that there is no concern for inhalation exposure of ambient air emissions by the general population. However, EPA plans to further assess potential risks to both workers exposed via inhalation during product formulation and use as a cleaning agent and to workers and consumers that use products containing 1,4-dioxane as a contaminant, such as paints, varnishes, adhesives, cleaners and detergents. EPA intends to use existing data and methods to conduct additional risk analysis, review previous health and exposure studies, and “develop margins of exposure and cancer risk estimates.” The Problem Formulation and Initial Assessment also concluded that assessing risk from drinking water exposure is not currently necessary due to ongoing monitoring by EPA’s Office of Water, so “decisions as to whether or not to regulate the contaminant in drinking water will be considered as part of the EPA’s Regulatory Determination process.” In addition, the agency announced that further environmental risk analysis would not be pursued because of the low hazard profile for 1,4-dioxane to aquatic organisms and the lack of hazard data for sediment and soil organisms.

Environmental Appeals Board interprets TSCA § 8(e).

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Last month, the U.S. Environmental Appeals Board (EAB) issued a rare and much-anticipated opinion interpreting the continuing violations doctrine and section 8(e) of the Toxic Substances Control Act (TSCA) in In re Elementis Chromium, TSCA Appeal No. 13-03 (March 13, 2015). The EAB overturned the November 2013 ruling [PDF] by the Administrative Law Judge (ALJ), which found that Elementis Chromium, Inc., a manufacturer of chromium chemicals, had violated TSCA § 8(e) by failing to report to EPA an epidemiological study on hexavalent chromium. In its March 13 decision, the EAB affirmed the ALJ in finding that the “continuing violations” doctrine applies to § 8(e) violations, thus rejecting Elementis’ statute of limitations argument. However, the EAB also held that Elementis had not violated TSCA § 8(e) because the corroborative information reporting exemption applied, and vacated the $2.5 million penalty imposed by the ALJ.

TSCA § 8(e) requires the immediate reporting to EPA of “information which reasonably supports the conclusion” that a substance “presents a substantial risk of injury to health or the environment.” In this case, a trade group of which Elementis was a member commissioned an epidemiological study on exposure to hexavalent chromium and lung cancer. EPA conducted a similar study in 2000, based on data from one facility, while the Elementis study, which finished in 2002, involved multiple “modernized” manufacturing plants. Both studies concluded that there was a positive association between hexavalent chromium exposure and lung cancer. EPA learned of the Elementis study in a 2006 Washington Post article, subpoenaed the study in 2008, and filed an administrative complaint against Elementis in 2010.

The EAB rejected Elementis’ claim that the general five-year federal statute of limitations barred EPA’s enforcement action. Elementis argued that the alleged violation accrued in 2002, when the company obtained the study, so the statute of limitations expired in 2007. However, the EAB found that the continuing violations doctrine, a special rule of accrual meaning that the period of limitations runs anew each day, applies to TSCA § 8(e), meaning that the limitations period only begins to run once the contested information is finally reported. The EAB concluded that the plain language and substance of § 8(e) imposes a continuing obligation, and violations of such are also continuing in nature. In Elementis, the company’s “last act of non-compliance” occurred on November 17, 2008, when the study was submitted to EPA, so the agency’s 2010 administrative complaint was within the five-year period.

Next, the EAB affirmed that the entire study was presumptively reportable as information which reasonably supports the conclusion that a substance presents a substantial risk of injury, rejecting Elementis’ argument that the only reportable information was “the single sentence conclusion regarding an elevated risk of cancer.” Instead, the EAB adopted a broad interpretation of the terms “information” and “reasonably supports,” concluding that Congress intended to address “the underlying data, assumptions, methodology, and analyses that actually provide the verification, corroboration, and substantiation” of the conclusion that a chemical poses a substantial risk of injury.

Nevertheless, the EAB found that the contested study was ultimately exempt from the reporting obligation because EPA established via guidance an exemption for information that is “corroborative of well-established adverse effects.” The EAB diverged from the ALJ’s analysis in finding that the Elementis study addressed a well-established adverse effect, i.e., increased incidence in lung cancer is a well-established adverse effect of exposure to hexavalent chromium. In contrast, the ALJ focused on the dose-response relationship between chromium and cancer, which the EAB characterized as an inapposite description of the potency of the chemical or conclusion about risk.

The EAB further found that the study was “corroborative” of well-established adverse effects, based not on the ordinary meaning of “corroborative,” but on agency guidance documents. This guidance describes that information is non-corroborative when it shows “the effects of a chemical are of ‘a more serious degree or different kind’ than previously perceived.” Therefore, information would be corroborative “if it shows that effects are less severe, they occur only at higher doses, or they occur in a species or strain of test animal, or by a route of exposure, that has been previously documented.” In this case, the study “only revealed statistically significant lung cancer effects at a substantially higher level” than in EPA’s own study. Thus, the Elementis study qualified for the exemption, although the EAB noted that it would have affirmed the ALJ’s decision but for EPA’s self-imposed limitation on “the broad reach of the statute with its interpretation of what information EPA is ‘adequately informed of’ in its guidance documents.”

The Elementis decision raises several interesting issues under TSCA, especially concerning the breadth of information companies must report under § 8(e) and which other TSCA sections might be interpreted as imposing continuing obligations. How EPA reacts to the decision will be instructive, especially if it chooses to refine or redefine its guidance on the corroborative information reporting exemption. Alternatively, Elementis may be of interest to legislators and stakeholders currently involved in negotiating a new framework for TSCA.

Proposed reporting requirements for nanomaterials released.

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Companies that manufacture, import or process nanoscale materials would be subject to reporting requirements under a new proposed rule released today by EPA. EPA is proposing reporting obligations concerning use, exposure, and other factors under section 8(a) of the Toxic Substances Control Act (TSCA). The proposed rule would apply to nanoscale chemical substances in the marketplace that have unique properties related to their size. The agency intends to use this information to determine if any further action under TSCA is needed.

Under the proposed rule [pre-publication version, PDF], companies would be required to report if they manufactured or processed a “discrete form” of a reportable nanoscale substance during the three years preceding the rule’s final effective date. EPA also proposes a continuing reporting requirement for companies intending to manufacture or process a discrete form of a reportable chemical substance after the rule’s final effective date. These manufacturers or processors would be required to report to EPA 135 days before the commencement of manufacturing or processing.

To the extent that it is known or reasonably ascertainable to the reporter, companies would have to submit the following information:

  • Specific chemical identity;
  • Material characteristics like morphology and surface modifications;
  • Physical and chemical properties;
  • Maximum weight percentage of impurities and byproducts;
  • Production volumes;
  • Use information;
  • Detailed methods of manufacturing or processing;
  • Exposure information, including estimates of numbers of individuals exposed in the workplace or in other scenarios;
  • Release information, including estimates of amounts released;
  • Risk management practices, such as protective equipment or hazard warnings; and
  • Existing data concerning environmental and health effects.

Generally, nanoscale materials are chemical substances that have structures with dimensions “at the nanoscale,” meaning 1-100 nanometers (nm), and may have properties different from the same chemicals with structures at a larger scale, such as greater strength or lighter weight.  The proposed rule would apply to substances that are:

  • Solid at 25°C and atmospheric pressure; and are
  • Manufactured or processed in a form where the primary particles, aggregates, or agglomerates are in the size range of 1-100nm and exhibit unique and novel characteristics or properties because of their size.

The proposed reporting requirements apply to “discrete forms” of reportable chemical substances. In some cases, companies would be required to report separately for multiple nanoscale forms of the same chemical substance. The agency’s intent is to focus on “intentionally manufactured chemical substances at the nanoscale,” so unintended variations in particle sizes between production batches, for example, should not trigger § 8(a) reporting. EPA proposes to distinguish between these “discrete forms” based on a combination of the following three factors:

  1. a change in process to affect a change in size and/or a change in properties of the chemical substances manufactured at the nanoscale;
  2. a change in mean particle size of 10% or greater; and
  3. the measured change in at least one of the following properties, zeta potential, specific surface area, dispersion stability, or surface reactivity, is greater than 7 times the standard deviation of the measured values.

Other examples of discrete forms include nanomaterials with different morphologies (spheres vs. rods) and nanoscale forms of the same material but coated with different substances.

The proposed rule applies to mixtures, including when nanomaterials are manufactured or processed “solely as a component of a mixture, encapsulated material, or composite.” However, if a nanomaterial is incorporated into a mixture, encapsulated material, or composite by the nanomaterial’s manufacturer, the incorporation step does not have to be separately reported.

EPA proposes to apply a modified version of the existing small manufacturer/processor exemption to § 8(a) requirements. Because nanoscale materials are produced at much lower production volumes, EPA seeks to eliminate the 100,000 pound volume threshold for exempted small manufacturers or processors. Instead, a company could qualify as a small manufacturer/processor if it has “sales of less than $4 million” per year.

The proposed rule also excludes certain substances, including nanoclays, DNA, RNA, proteins, and chemical substances “which dissociate completely in water to form ions that are smaller than 1 nanometer.” Certain reporting which would be duplicative is also excepted; e.g., companies that submitted information under EPA’s voluntary Nanoscale Materials Stewardship Program do not need to re-submit, nor do submitters of Premanufacture Notices (PMNs) filed since January 1, 2005.

Information would be collected electronically, using a modified version of the reporting form used by the voluntary NMSP initiative, and compatible with EPA’s existing Central Data Exchange (CDX) and Chemical Information Submission System (CISS), both used for other TSCA reporting. EPA is not proposing an inventory for nanoscale materials, although non-confidential information collected through this proposed rule would be published in ChemView.

In addition to the above proposed reporting requirements, EPA is seeking input on various related issues, including “the possibility of a future rule that would require periodic reporting of chemical substances manufactured at the nanoscale, similar to reporting that occurs under the Chemical Data Reporting (CDR) rule.”

EPA is accepting comments on the proposed rule for 90 days following its publication in the Federal Register. The agency also anticipates holding a public meeting during the comment period.

EPA completes risk assessment for n-methylpyrrolidone (NMP).

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EPA has made more progress with its Toxic Substances Control Act (TSCA) Work Plan with yesterday’s release of the agency’s final risk assessment for N-Methylpyrrolidone (NMP) or 1-methyl-2-pyrrolidinone, a chemical commonly used in paint and coating removal products. NMP is estimated to be used at over 184 million pounds per year, in paint strippers, agricultural chemicals, electronic cleaning, and petrochemical processing. The risk assessment identifies developmental toxicity risks for pregnant women and women of child-bearing age who have high exposure to NMP, as either consumers or workers. Risks were identified for both acute and chronic exposures, although acute exposure risks could be mitigated by using chemical-resistant gloves and using NMP products for less than four hours a day.

EPA is considering a range of voluntary and regulatory actions to reduce risks from NMP exposure. This is the fifth final risk assessment completed under the TSCA Work Plan.

EPA and FDA announce data sharing agreement for CBI.

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Today, EPA and the Food and Drug Administration (FDA) announced a Memorandum of Understanding (MOU) to share data on pesticides and toxic substances. According to a notice published last month in the Federal Register, in response to the FDA’s spring 2014 request, EPA will grant FDA access to information collected under the Toxic Substances Control Act (TSCA) and Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA), including information claimed by submitters as Confidential Business Information (CBI). This data-sharing initiative “is intended to maximize the utility of data collected under those statutes, and enhance the efficiency of the participants’ regulatory processes and facilitate better risk management activities.” The MOU applies specifically to EPA’s Office of Chemical Safety and Pollution Prevention and FDA’s Foods and Veterinary Medicine Program, Center for Food Safety and Applied Nutrition, and Center for Veterinary Medicine.

FDA and EPA “have complementary roles” regulating substances incorporated into food (including animal feed), animal drugs, and cosmetics. Antimicrobial food wash products, for example, must meet different standards for safety and non-adulteration of food (FDA), and no adverse environmental effects (EPA).

The MOU covers the sharing of non-public information exempt from public disclosure, including CBI and “confidential commercial information” (CCI). Information will be shared “on a reciprocal and as-needed basis” for substances that may be present in human food, animal food and feed, animal drugs, and cosmetics. The MOU provides that each agency will develop internal procedures and designate liaison officers for the information-sharing exchanges and to protect against unauthorized disclosure of CBI or CCI. Appendices to the MOU establish a framework process for information sharing, including specific language to be used in requesting information or responding to a request.

The MOU does not specify any limits as to programmatic uses for shared information. The disclosure of non-public information remains governed by applicable laws and regulations, and non-public information may not be disclosed further or shared with personnel at the other agency that have not been authorized to access non-public information. If EPA requests information from FDA identified as a trade secret, FDA will assess whether the information is in fact trade secret. TSCA/FIFRA-designated CBI requested by FDA will have to be returned to EPA or destroyed when no longer needed. Either agency may choose not to share requested information, or may choose to limit the scope of information provided in response to a request. The agencies may also protect information “in connection with research that has not been peer reviewed.”

EPA agrees to clarify data requirement rule for antimicrobial pesticides.

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EPA and the American Chemistry Council (ACC) have reached a settlement regarding the ACC’s petition concerning data requirements for antimicrobial pesticides. This settlement addresses a Final Rule published by EPA on May 8, 2013, “Data Requirements for Antimicrobial Pesticides,” for which the ACC, the chemical industry trade group, sought judicial review in the U.S. Court of Appeals for the D.C. Circuit.

Under the settlement, EPA will within the next four months release for public comment a proposed guidance document, “Antimicrobial Pesticide Use Site Index.” This guidance will include “a compilation of existing antimicrobial pesticide use sites and identify how each use site fits within the 12 use patterns established in the regulation.” The Use Site Index will include the following descriptions, as set forth in the settlement:

  • Direct Food Use: a use is generally considered to be a direct food use if an antimicrobial pesticide is intended to be directly applied to food (defined for purposes of the Federal Food, Drug, and Cosmetic Act at 21 U.S.C. § 321(f)) or applied to a material or article for the purpose of treating food.
  • Indirect Food Use: a use is generally considered to be an indirect food use if the use involves application of the antimicrobial pesticide in or on a material or article that comes into contact with food and may result in residues in or on food, but the use is not intended for pesticidal treatment of food.
  • Nonfood Use: a use is generally considered to be a nonfood use when there is a reasonable certainty of no residues in or on food, for example because the antimicrobial pesticide is not expected to come into contact (directly or indirectly) with food as a result of its intended use.

In addition to the Site Index proposed guidance, the settlement agreement provides that EPA shall propose an interim guidance document and then a “correction to the Final Rule” regarding the 200 ppb level for antimicrobial residues in or on a food item, as established at 40 C.F.R. § 158.2230(d). Under the Final Rule, additional toxicology tests are required for indirect food uses with antimicrobial residue levels greater than 200 ppb. Within 60 days, EPA must issue an interim guidance document “explaining EPA’s interpretation of the 200 ppb level established in the Final Rule.” Within two and a half years, EPA must propose a “correction” to make “clear that the 200 ppb level established in the Final Rule is based on total estimated daily dietary intake, and is not based on the amount of residue present on only a single commodity.”

EPA replaces Design for the Environment with new “Safer Choice” label.

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Today, EPA unveiled its new “Safer Choice” label, which replaces the Design for the Environment (DfE) label for cleaning and other chemical products that meet the agency’s standards for safer chemical ingredients. The new label underscores the program’s focus on human health and environmental safety standards with the hope of making it easier for families to choose safer products for families. EPA Administrator Gina McCarthy even appears with her dog in a short YouTube video to emphasize that children and pets are more vulnerable to chemicals.

The new “Safer Choice” label has different versions for products used in homes and for those used in office buildings, schools, and other institutions.

Speaking at a conference in Baltimore yesterday, Wendy Cleland-Hamnett, director of EPA’s Office of Pollution Prevention and Toxics, said the agency consulted with the Federal Trade Commission (FTC) in developing in the new logo to ensure that it would comply with the FTC’s Green Guides on environmental marketing claims.

EPA also introduced a new label to substantiate fragrance-free claims in Safer Choice products. The revised “Safer Choice Standard” [PDF] specifies changes related to the new fragrance-free standard. Products that qualify for the Safer Choice label are eligible for the additional fragrance-free certification and label if no fragrance materials are in the product ingredients.

In addition, the agency announced that it “is aligning across product types the requirements applied to labeled products that contain sensitizers that exceed the de minimis level (0.01%) in the end-use product.” All Safer Choice products, not just consumer products, will now be required to disclose on the label if fragrance materials that are skin sensitizers are present above the de minimis level. Manufacturers of such products will also be required to provide EPA with information that the sensitizing ingredients are:

  • critical to the fragrance essence or product identity;
  • otherwise in compliance with the fragrances criteria;
  • the subject of good faith explorations of alternatives; and
  • subject to a monitoring system that would alert the Agency if a user reports any adverse effects from the product.

The new label does not change other aspects of the DfE program, such as safer chemical criteria.

On the agency’s blog, Administrator McCarthy wrote that producers and retailers including Clorox, Walmart, and Wegmans are on board to start putting products with the new label on shelves this year.

EPA’s chemicals outlook for 2015.

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Jim Jones, the EPA Assistant Administrator for Chemical Safety and Pollution Prevention, writes in Chemical Watch that his highest priority in 2015 is “to continue building on the progress” of the last few years in making a “credible” program to manage existing chemicals, “despite the widely acknowledged shortcomings of the Toxic Substances Control Act (TSCA).” In his outlook for 2015, Assistant Administrator Jones highlighted progress on the TSCA Work Plan for Chemical Assessments as well as various regulatory actions.

Assistant Administrator Jones noted that in 2014, EPA completed final assessments on four chemical substances. Of those, the assessments for trichloroethylene (TCE) and methylene chloride (DCM) identified health risks to consumers and workers working with the chemicals. In 2015, the agency intends to negotiate for voluntary risk reduction measures with TCE and DCM manufacturers, but would turn to TSCA § 6 to mandate risk management – a regulatory tool EPA has not used in 28 years. Under the TSCA Work Plan, assessments scheduled for 2015 will address the following:

  • N-Methylpyrrolidone (NMP) in paint stripper products;
  • three clusters of related chemicals, used as flame retardants;
  • several uses of 1-Bromopropane (1-BP); including occupational uses of 1-BP in dry-cleaning and foam gluing operations, consumer uses in aerosol solvent cleaners and spray adhesives;
  • 1,4-Dioxane; and
  • long- and medium-chained chlorinated paraffins used as metal working and compounding agents and its effects on ecological receptors.

EPA has a variety of regulatory actions planned for 2015. The agency plans to finalize a rule regulating formaldehyde emissions from composite wood products, thus making national the emissions standard already in place in California. In addition, EPA will make a determination on “whether renovations in commercial and public buildings create a hazard from lead-based paint.” Assistant Administrator Jones also announced that the agency will, in late 2015 or early 2016, propose the modification of existing use authorizations for polychlorinated biphenyls (PCBs) in several contexts. Finally, Assistant Administrator jones noted that 2015 would mark a “turning point” for the agency’s green chemistry programs as incentives and obstacles to adoption of greener chemistries are identified.

Other items on EPA’s agenda for 2015 include:

EPA promulgates Significant New Use Rules for 27 PMN substances.

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In yesterday’s Federal Register, the EPA published Significant New Use Rules (SNUR) under the Toxic Substances Control Act (TSCA) for 27 substances that were already the subject of Premanufacture Notices (PMNs). Two of the substances – Phosphoric acid, iron (2+) lithium salt (1:1:1) and Polymer of terephthalic acid and ethyl benzene with multi-walled carbon nanotube (generic) – are also subject to “risk-based” consent orders under TSCA section 5(e), requiring protective measures to limit exposures or otherwise mitigate the potential unreasonable risk to human health and the environment presented by the substances. For these substances, the SNURs designate the absence of those protective measures as a “significant new use.”

Under all of the SNURs, EPA must be notified at least 90 days before beginning to manufacture or process the specified chemicals in a “significant new use.” For the chemicals not subject to § 5(e) consent orders, any use deviating from the use scenario reported in the corresponding PMN is designated as a “significant new use.” Specific requirements for each chemical are specified in the regulatory text.

The SNUR was promulgated by Direct Final Rule, and will go into effect on April 3, 2015, unless adverse comments are submitted by March 4.