By Lisa M. Campbell, Timothy D. Backstrom, and James V. Aidala
A noteworthy development in the U.S. Environmental Protection Agency’s (EPA) ongoing and controversial consideration of the potential use of epidemiological data in its pesticide risk assessments occurred on May 25, 2017, when EPA placed in the public dockets for certain organophosphate (OP) pesticides an “update” of the September 15, 2015, Literature Review and Food Quality Protection Act (FQPA) determination, along with a response to comments on the original document. These documents were signed by EPA scientists on December 29, 2016, prior to the new Administration, but were placed in the docket only last month, under the new Administration. The documents attempt to rebut the various criticisms of EPA’s assessment of the epidemiology studies for chlorpyrifos and the original FQPA safety factor determination for OP pesticides, and they reaffirm the policy embodied in the original Literature Review. Because these new documents were signed in the last days of the Obama Administration, they may be viewed by some industry stakeholders as an effort by some at EPA to “lock in” the prior policy concerning OP pesticides.
The public release of the “updated” Literature Review and response to comments must be considered in the context of the ongoing chlorpyrifos battles that have received significant public attention. During the five months between the date that these “update” documents were signed and the date that EPA placed them in the public docket, EPA Administrator Pruitt issued a decision on March 29, 2017, to deny the petition filed by the Pesticide Action Network North America (PANNA) and the National Resources Defense Council (NRDC) requesting that EPA revoke all tolerances and cancel all registrations for chlorpyrifos products. See EPA Denies Petition to Ban Chlorpyrifos. In his denial decision, Administrator Pruitt concluded it would be appropriate for EPA to defer determining whether chlorpyrifos is likely to cause neurodevelopmental effects at exposure levels below the levels that cause acetylcholinesterase (AChE) inhibition until the completion of the registration review process for chlorpyrifos. Administrator Pruitt based his decision on the premise that “the science addressing neurodevelopmental effects remains unresolved” and that “significant uncertainty … exists regarding the potential for chlorpyrifos to cause adverse neurodevelopmental effects.”
Some industry stakeholders may argue that the decision by the EPA scientists who prepared the “updated” Literature Review which concluded that EPA should retain the 10X FQPA uncertainty factor for OP pesticides can be reconciled with Administrator Pruitt’s subsequent denial decision, because the “updated” FQPA safety factor determination does not preclude further scientific discussion concerning the potential for neurodevelopmental effects from OP pesticide exposures. On the other hand, other industry stakeholders may be concerned about the immediate adverse impact of this “updated” FQPA determination on the risk assessments prepared by EPA for OP pesticides and the measures that will be demanded by EPA to mitigate purported risks.
On April 5, 2017, PANNA and NRDC responded to Administrator Pruitt’s March 29, 2017, decision to deny their petition to revoke the tolerances and cancel the registrations for chlorpyrifos by submitting to the Ninth Circuit Court of Appeals a Motion for Further Mandamus Relief. That motion was substantially based on the premise that EPA does not “suggest that it has reconsidered its finding that chlorpyrifos is unsafe.” The briefing on the new mandamus motion was completed on May 5, 2017, several weeks before EPA disclosed the documents concerning the “updated” FQPA determination. Nevertheless, petitioners could try to argue that these documents constitute further evidence supporting their key premise that EPA has not actually revisited its prior determination that chlorpyrifos exposures are unsafe.
The legal and policy issues posed by EPA’s evaluation of the epidemiological data for chlorpyrifos and by EPA’s determination that these data create sufficient uncertainty to warrant retention of the FQPA 10X safety factor for all OP pesticides will be a continued source of controversy, and will be watched with interest by all stakeholders.
More information and updates on chlorpyrifos, the epidemiological data, and their surrounding legal issues is available on our blog item under keyword chlorpyrifos.
By Jason E. Johnston, M.S.
On May 31, 2017, the U.S. Environmental Protection Agency (EPA) announced the release of its Food Contact Sanitizing Solutions Model (FCSSM), a pesticide risk assessment model that has been developed to “estimate indirect dietary exposure to components of sanitizing solutions used in commercial settings.” EPA states that “the model offers guidance for estimating exposure where there may be inadvertent transfer of residue to edible items prepared or transported on surfaces treated with these pesticides.” The model consists of spreadsheets that automatically calculate dietary exposure and risk estimates based on data entered by the user. The model estimates exposures to antimicrobial active ingredients listed under 40 C.F.R. § 180.940(b) and 40 C.F.R. § 180.940(c), where 940(b) includes uses in dairy processing equipment and food processing equipment and utensils, while 940(c) excludes dairy processing equipment. FCSSM does not apply to active ingredients listed under 40 C.F.R. § 180.940(a), which are used on food contact surfaces in public eating places as well as dairy and food processing equipment. For this case, EPA’s established methodology remains in place. Compared to the simple calculation method used previously for these use scenarios, the major new feature of the FCSSM is the separate calculations of both acute and chronic dietary exposures for the general U.S. population and eight subpopulations. EPA also released a user guide that provides background information on the model and familiarizes users with the inputs required to run the model.
More information about the FCSSM as well as other models used for pesticide risk assessments is available on EPA’s website.
By Lisa M. Campbell and James V. Aidala
On April 5, 2017, Petitioners Pesticide Action Network North America (PANNA) and the Natural Resources Defense Council (NRDC) (Petitioners) filed a Motion for Further Mandamus Relief in the Ninth Circuit Court of Appeals proceedings regarding the chlorpyrifos tolerances. In the motion, Petitioners respond to the U.S. Environmental Protection Agency’s (EPA) order signed on March 29, 2017, which denied the petition to revoke tolerances. Petitioners state that EPA’s response to the petition (the order) is “no response at all and not what this Court ordered EPA to do,” and asks the court to “grant further mandamus relief, giving EPA 30 days to act on its findings that chlorpyrifos exposures are unsafe and to establish deadlines for the next steps in the revocation and cancellation processes for chlorpyrifos.” Specifically, Petitioners request that the court order EPA to:
- Take regulatory action within 30 days on its finding that chlorpyrifos is unsafe and “make it abundantly clear that what is required within 30 days is final regulatory action based on the neuro-developmental and other risks posed by chlorpyrifos exposures”;
- Resolve objections to its final regulatory action within 60 days, as opposed to “as soon as practicable after receiving the arguments of the parties,” because, Petitioners assert, EPA otherwise may put off their response for a long period of time;
- Require EPA to issue a notice of intent to cancel all chlorpyrifos uses within 60 days, “consistent with its risk assessments and findings that chlorpyrifos is unsafe,” as it has “found drinking water contamination from all chlorpyrifos uses, including nonfood uses, and will need to take regulatory action to end such uses in addition to stopping food uses”; and
- File six-month status reports until the tolerance revocation process and the cancellation proceedings are complete.
It is no surprise that the Petitioners who were disappointed by EPA’s denial of the petition one week ago have now continued their advocacy against the use of chlorpyrifos. As we note in our previous blog item EPA Denies Petition to Ban Chlorpyrifos, EPA articulated its reason for the denial as of this time, but this in itself did not articulate its determination that the registration and associated tolerances met the requirements of the Food Quality Protection Act (FQPA). EPA’s response to this latest legal skirmish will be of interest, as will the court’s response to it. .
More information on the proceedings is available on our blog under key word chlorpyrifos.
By Lisa M. Campbell and James V. Aidala
On March 29, 2017, U.S. Environment Protection Agency (EPA) Administrator Pruitt signed an order denying the September 2007 petition of the Pesticide Action Network North America (PANNA) and the Natural Resources Defense Council (NRDC) requesting that EPA revoke all tolerances and cancel all registrations for the pesticide chlorpyrifos. This is the latest EPA action in a long and contentious battle concerning chlorpyrifos tolerances and registrations, and is likely not the end of this story.
EPA’s decision denying the petition addresses each of the petition’s ten claims and the history of EPA’s review and responses to those claims. Much attention will be paid to the order’s discussion of three of the claims, which the order states all relate to the same issue: “whether the potential exists for chlorpyrifos to cause neurodevelopmental effects in children at exposure levels below EPA’s existing regulatory standard (10% cholinesterase inhibition).” The order states that because “Congress has provided that EPA must complete registration review by October 1, 2022,” and because EPA has “concluded that it will not complete the human health portion of the registration review or any associated tolerance revocation of chlorpyrifos without first attempting to come to a clearer scientific resolution” on the issues concerning potential neurodevelopmental effects in children, EPA is denying the claims, given the Ninth Circuit Court of Appeals’ August 12, 2016, order that “made clear” that further extensions to the March 31, 2017, deadline for responding to the petition would not be granted. EPA states that the “science addressing neurodevelopmental effects remains unresolved,” and “further evaluation of the science during the remaining time for completion of registration review is warranted to achieve greater certainty as to whether the potential exists for adverse neurodevelopmental effects to occur from current human exposures to chlorpyrifos.”
The order will become effective as soon as it is published in the Federal Register. More information on the prior proceedings concerning this matter is available on our blog under key phrase chlorpyrifos.
This decision by EPA under the Trump Administration to deny the petition is not surprising, given the rhetoric of reducing regulatory burdens and the need to stop regulatory “overreach” by agencies like EPA which has been accused of making politically driven decisions. EPA's press release captures this, quoting Administrator Pruitt stating (in part): "By reversing the previous Administration’s steps to ban one of the most widely used pesticides in the world, we are returning to using sound science in decision-making -- rather than predetermined results.”
EPA has, however, “kicked the can down the road” to some extent on the key science issue -- whether EPA appropriately evaluated epidemiology studies which reported that exposures to the pesticide had adverse neurological impacts on infants and children -- an issue that affects not only chlorpyrifos, but the other organophosphates (OP) that EPA has concluded are subject to a Food Quality Protection Act (FQPA) 10X factor based on these studies. (See EPA’s September 15, 2015, Literature Review on Neurodevelopment Effects & FQPA Safety Factor Determination for the Organophosphate Pesticides.)
The Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) Scientific Advisory Panel (SAP) members who reviewed EPA’s approach, based on these studies with regard to chlorpyrifos, generally had concerns with its proposed approach. When EPA nonetheless issued its renewed call for revocation of the tolerances in November 2016, eight days after the Presidential election, it was seen by some as partly (if not fully) driven by a “political” calculus which ignored the lack of support of the FIFRA SAP.
The November 2016 proposal was based on more than the epidemiology studies which have proven controversial. At the same time, EPA’s arguments in the November notice relied on some of the earlier findings about the studies and FIFRA SAP’s review to fashion a “hybrid” approach which, not surprisingly, supported EPA’s previous conclusions.
This has led to charges of “politics over science” on all fronts, but in responding to the court deadline for a final decision by March 31, 2017, EPA has now declared it does indeed need more time to resolve the science issues, and argues that the general registration review process, with the chlorpyrifos review scheduled for 2022, gives EPA more time than what the court imposed. EPA has concluded that if a decision is needed now, the required burdens have not been met to change the current status of the pesticide. The order states:
- Following a review of comments on both the November 2015 proposal and the November 2016 notice of data availability, EPA has concluded that, despite several years of study, the science addressing neurodevelopmental effects remains unresolved and that further evaluation of the science during the remaining time for completion of registration review is warranted to achieve greater certainty as to whether the potential exists for adverse neurodevelopmental effects to occur from current human exposures to chlorpyrifos. EPA has therefore concluded that it will not complete the human health portion of the registration review or any associated tolerance revocation of chlorpyrifos without first attempting to come to a clearer scientific resolution on those issues.
EPA has determined it needs more time, however frustrating that may be, to sort out the science. As such, it is allowing chlorpyrifos use to continue, but objections to EPA’s decision are expected by the petitioners who originally pushed for the tolerance revocations. The effect on other OPs with regard to the application of the FQPA uncertainty factor is unclear, at best. The science debate will rage on, with no clear timeline or process for how the ultimate resolution of these questions will be “final.” This political and legal back-and-forth may become the new normal for the Trump Administration as it seeks to balance a more “business friendly” regulatory approach with the stringent requirements of the statutory duties of underlying authorizing legislation across all of EPA’s programs.
By James V. Aidala and Margaret R. Graham
On January 12, 2017, the U.S. Environmental Protection Agency (EPA) released its Policy to Mitigate the Acute Risk to Bees from Pesticide Products (Mitigation Policy) which describes methods for addressing acute risks to bees from pesticides. EPA states that this Mitigation Policy is “more flexible and practical than the proposed policy” that was issued on May 29, 2015, and it has “made modifications to its approach with the goal of better targeting compounds that pose an acute risk, and with the goal of reducing potential impact of this effort on growers.” EPA states that it will use its Tier 1 acute risk assessment to, in part, determine the products that trigger concerns about pollinator risk that the label restrictions are intended to address. EPA will begin implementing this Policy in 2017 by sending letters to registrants describing steps that must be taken to incorporate the new labeling. More information on the Mitigation Policy, including its supporting documents, and EPA’s response to comments submitted on the proposed policy, is available on www.regulations.gov under Docket ID EPA-HQ-OPP-2014-0818.
Also on January 12, 2017, EPA published preliminary pollinator-only risk assessments for the neonicotinoid insecticides clothianidin, thiamethoxam, and dinotefuran, and an update to its preliminary risk assessment for imidacloprid, published in January 2016. EPA states that the preliminary assessments for clothianidin, thiamethoxam, and dinotefuran are similar to the preliminary pollinator assessment for imidacloprid, in that they showed that “most approved uses do not pose significant risks to bee colonies,” but “spray applications to a few crops, such as cucumbers, berries, and cotton, may pose risks to bees that come in direct contact with residue.” As for the updated imidacloprid assessment, EPA states that is looked at potential risks to aquatic species, and identified some risks for aquatic insects. Interested parties will have 60 days to comment on the preliminary risk assessments after notice is published in the Federal Register. In terms of comments, EPA states that it is especially interested in getting input from stakeholders “on the new method for assessing potential exposure and risk through pollen and nectar.” Links to risk assessment dockets for each individual insecticide are available on EPA’s website under Schedule for Review of Neonicotinoid Pesticides. EPA states it is hopes to release the final neonicotinoid risk assessments by mid-2018.
The revised Mitigation Policy has been long in coming since it was first released over eighteen months ago. The delay in revising its approach reflects the complexity of the comments submitted, and EPA’s deliberateness in more finely crafting its policies, given the passage of time and other considerations. This revised policy contains more flexibility and explicit discussion of the need for exceptions to blanket requirements in response to some of the comments received on the earlier proposal. There remains significant public and regulator concern about the possible impacts on pollinators from pesticide use, however, there is currently less of a manic tone to EPA’s statements and actions.
For example, when discussing how EPA will approach changing the labels of the affected universe of pesticide products, there is a much less onerous tone and no specific deadlines for registrants to submit revised labels “or else.” (The 2013 directives to registrants included demands for thousands of revised labels to be submitted within six weeks “or else” -- EPA would take “appropriate action” under FIFRA.) EPA reminds us all that it retains authority to impose these new requirements broadly, a statement that will strike some as regulatory overreach, but the tone and approach is more in line with past EPA “guidance” about how it will approach a new or revised regulatory concern.
Similar to what EPA previously concluded about imidacloprid, where that assessment concluded that the most controversial use -- corn seed treatments -- did not indicate a risk concern, EPA did include in its summary about the other three neonicotinoid pesticides that:
- The assessments for clothianidin, thiamethoxam, and dinotefuran, similar to the preliminary pollinator assessment for imidacloprid showed: most approved uses do not pose significant risks to bee colonies. However, spray applications to a few crops, such as cucumbers, berries, and cotton, may pose risks to bees that come in direct contact with residue.
This might unfairly be summarized as: after years of regulatory analysis EPA has concluded that if insecticides come into direct contact with insects, there is likely to be a risk to the exposed insect.
This conclusion would be too simplistic since EPA and other regulatory bodies have expressed concern about what unintended exposures to insecticides might cause, and more generally the possibility of colony level impacts on honeybee and other pollinator populations from pesticide use. Some critics will continue to insist that EPA broaden its regulatory approach to more than just pesticides used for crops under contracted pollinator services. The broader issue of pesticide drift and possible impacts on non-target species will continue to be a concern for all pesticides.
Perhaps the more deliberate consideration of needed data generation and assessment that seems to be the current approach will allow both more refined regulatory controls if needed, and a reduction in the sometimes hot rhetoric which has accompanied the pollinator issues.
Lastly, although this revised Mitigation Policy and the three new preliminary assessments are not unexpected next steps as part of the ongoing registration review program for pesticides, given their very late release -- less than ten days before the arrival of a new Administration -- some might question whether this is part of the “midnight regulations” pushing the political agenda of the outgoing Administration. The new leadership may revise what has been released, and may come to different conclusions about any needed restrictions. That said, the issue of whether certain pesticides are having a dangerous impact on honeybee populations will continue to be a concern for regulators both in the U.S. and globally.
By Lisa M. Campbell and Timothy D. Backstrom
On July 20, 2016, the U.S. Environmental Protection Agency (EPA) issued a memorandum attaching minutes from the April 19-21, 2016, FIFRA Scientific Advisory Panel (SAP) meeting, Transmittal of Meeting Minutes of the April 19-21, 2016 Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) Scientific Advisory Panel (SAP or Panel) Meeting Held to Consider and Review Scientific Issues Associated with “Chlorpyrifos: Analysis of Biomonitoring Data.” This SAP was convened to advise EPA regarding the evaluation of biomonitoring chlorpyrifos data from epidemiology studies conducted by the Columbia Center for Children’s Environmental Health (CCCEH).
The minutes indicate that the SAP has significant concerns with EPA’s proposal to use the biomonitoring chlorpyrifos data from the CCCEH epidemiology studies to establish a point of departure (PoD) for chlorpyrifos risk assessment. The minutes state: “Because many uncertainties cannot be clarified, the majority of the Panel does not have confidence that the Columbia Center for Children’s Environmental Health (CCCEH) cord blood data on chlorpyrifos concentrations can accurately be used in quantitative risk assessment to determine a Point of Departure (PoD).” A major source of uncertainty cited by the FIFRA SAP is “the lack of verification and replication of the analytical chemistry results that reported very low levels of chlorpyrifos (pg/g),” because EPA had to impute a finite quantitative value to “a large fraction of cord blood samples included in the analyses presented with levels below [level of detection (LOD)].” Moreover, some SAP members “thought the quality of the CCCEH data is hard to assess when raw analytical data have not been made available, and the study has not been reproduced.”
The SAP also, however, stated that “both epidemiology and toxicology studies suggest there is evidence for adverse health outcomes associated with chlorpyrifos exposures below levels that result in 10% red blood cell (RBC) acetylcholinesterase (AChE) inhibition (i.e., toxicity at lower doses).” Nevertheless, it agreed with EPA that “applying additional safety factors to the AChE PoDs to account for a possible noncholinergic mode of action (MOA) would be problematic because of challenges in justifying any particular value for such an adjustment.”
Of note, the SAP concluded that it would be appropriate to use a “10X intra-species extrapolation factor” in any analysis based on the cord blood data. It also identified other sources of uncertainty that should be considered in such an analysis, including “the inability of single measures of chlorpyrifos concentration in blood to provide information regarding source, frequency, duration and magnitude of exposure, and how these exposures are linked to specific outcomes measured in the CCCEH study participants.” Although EPA suggested in a Status Report filed in the chlorpyrifos litigation pending in the Ninth Circuit Court of Appeals on June 29, 2016, that the FIFRA SAP might recommend a “hybrid approach” that EPA could use in lieu of a PoD based on AChE inhibition, thereby altering the prior EPA analysis for chlorpyrifos, the SAP minutes do not include a recommendation for such a hybrid methodology.
Given the concerns expressed by the SAP regarding EPA’s proposal to derive a PoD from cord blood biomonitoring data collected in the CCCEH epidemiology studies, it may be unlikely that EPA will further pursue this specific approach. It is less clear whether EPA will be inclined to propose any further adjustments to its existing risk assessment for chlorpyrifos, which utilizes a PoD based on animal AChE data, along with intra-species and inter-species uncertainty factors and an additional Food Quality Protection Act (FQPA) 10X factor. EPA’s decision to retain the special FQPA factor in its risk assessment for chlorpyrifos will remain controversial, because it is based on an assessment of the value and significance of several epidemiology studies for chlorpyrifos that many in the pesticide industry strongly dispute. The discussion in the minutes of the uncertainties resulting from the refusal of the CCCEH investigators to provide underlying raw data may provide further support for arguments by industry that EPA should not predicate risk assessments on the epidemiology studies for chlorpyrifos before obtaining and reviewing these data.
More information on the FIFRA SAP and its surrounding legal issues is available in our blog item EPA Requests Six Month Extension of Deadline for Decision on Chlorpyrifos Tolerance Revocation, and more generally on our blog with keyword chlorpyrifos.
By Lisa M. Campbell and Lisa R. Burchi
On March 16, 2016, the European Commission (EC) issued its final report on the sustainable use of biocides. Article 18 of the European Union’s (EU) biocidal products regulation (BPR) directs the EC to issue a report on how the BPR contributes to the sustainable use of biocidal products, and on whether there is a need to introduce additional measures, in particular for professional users, to reduce the risks posed to human health, animal health, and the environment by biocidal products. Sustainable use for biocidal products is defined in the report as “the objective of reducing the risks and impacts of the use of biocidal products on human health, animal health and the environment and of promoting the use of integrated pest management and of alternative approaches or techniques such as non-chemical alternatives to biocidal products.”
Significantly, the EC’s report does not recommend the creation of further regulations, stating that the “risks posed to human health, animal health and the environment by biocidal products … are already appropriately addressed by measures imposed through the conditions of approval of active substances or the authorisation of biocidal products.” The EC also declined to extend the scope of the Framework Directive on the Sustainable Use of Pesticides (Directive 2009/128/EC) to biocidal products, stating: “due to the very diverse nature of biocidal products and the variety of applications, it does not seem appropriate to simply extend the scope of the Framework Directive on the Sustainable Use of Pesticides to biocidal products.”
Instead, the EC states that the “first and main priority” of EU Member States and industry must be “the completion of the on-going assessment of all the active substances that were already on the market when the BPD entered into force and the authorisation of biocidal products containing these active substances … with a view to promoting the sustainable use of biocidal products.” Further, Member States also should focus on the “need to invest additional resources on enforcement activities to ensure that no product is illegally placed on their market and that biocidal products are properly labelled.”
The EC’s report concludes by listing the following actions that it intends to pursue, and invites Member States to collaborate with the EC to do the same:
- Focus and strengthen efforts on the review programme of existing active substances to ensure it is completed at the latest by 2024;
- Ensure that once active substances are approved, product authorisations are granted, amended, or cancelled within 3 years;
- Invest additional resources on enforcement activities;
- Benefit from the legislative tools available, in particular by closely following the developments of best available techniques reference documents (BREF) that can be relevant for biocidal products used in industrial processes;
- Encourage communication and awareness raising campaigns to inform end users, through websites, in-store leaflets or videos, quick response codes on biocidal products, etc.;
- Encourage the development and implementation of standards (e.g., under the European Committee for Standardization), that could contribute to the sustainable use of biocidal products; and
- Welcome research initiatives on the sustainable use of biocides and alternatives to biocidal products.
By Lisa M. Campbell and Margaret R. Graham
On March 17, 2016, the U.S. Environmental Protection Agency’s (EPA) Office of Pesticide Programs (OPP), announced in an open letter to stakeholders, that it has developed new tools to “enhance the quality of its risk assessments and risk management decisions and better ensure protection of human health and the environment from pesticide use.” These tools have been developed as part of EPA’s efforts to implement OPP’s Strategic Vision for Adopting 21st Century Science Methodologies (Strategic Vision) initiative. As part of this initiative, OPP released two guidance documents:
- Final Guidance: Process for Establishing & Implementing Alternative Approaches to Traditional In Vivo Acute Toxicity Studies. OPP states that this guidance will “expand the use of alternative methods for acute toxicity testing” and “describes a transparent, stepwise process for evaluating and implementing alternative testing methods (not using live animals) for acute oral, dermal and inhalation toxicity, along with skin and eye irritation and skin sensitization.”
- Draft Guidance: Retrospective Analysis & Guidance for Waiving Acute Dermal Toxicity Tests for Pesticide Formulations. OPP states that this draft guidance “to waive all acute lethality dermal studies for formulated pesticide products” was developed through an analysis “across numerous classes representing conventional pesticides, antimicrobials, and biopesticides [that] examined the utility of the acute dermal toxicity study for formulations in pesticide labelling for end-use products.”
Comments on the draft guidance for waiving acute dermal toxicity tests are due May 16, 2016. The National Research Council’s 2007 report, Toxicity Testing in the 21st Century: A Vision and a Strategy, instigated OPP’s Strategic Vision initiative. EPA states that these guidance documents are significant steps in the report’s implementation and intended to reduced animal testing.
By Lisa M. Campbell and Timothy D. Backstrom
Significant issues concerning the scope of the U.S. Environmental Protection Agency’s (EPA) authority to cancel conditional registrations are raised by recent events concerning flubendiamide products sold in the U.S. by BayerCrop Science LP (Bayer) under the trade name Belt. Bayer announced on February 5, 2016, that it will not comply with EPA’s request that Bayer “voluntarily” cancel its registered flubendiamide products. In a January 29, 2016, letter, EPA stated that flubendiamide and a degradate compound are “mobile, stable/persistent, accumulate in soils, water columns and sediments and are toxic to aquatic invertebrates.” Based primarily on EPA’s ecological risk assessment, EPA has determined “that the continued use of the currently registered flubendiamide products will result in unreasonable adverse effects on the environment.” Bayer disagrees strongly with the EPA risk assessment, because Bayer believes it is based on overly conservative modeling estimates that cannot be reconciled with actual monitoring and environmental fate data for this pesticide.
Conditional registrations for pesticides containing flubendiamide were first granted by EPA under Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) Section 3(c)(7) in 2008. As one condition of registration, EPA required Bayer to conduct specific environmental fate studies, which have now been submitted and reviewed. EPA also adopted an initial expiration date for all registrations of flubendiamide products of July 31, 2013, which EPA later agreed to extend several times to allow time for further review and discussion of the submitted data. The current dispute with Bayer involves a specific condition that EPA included in its preliminary acceptance letter for this active ingredient, which EPA contends obligates Bayer to request voluntary cancellation of the registrations now that EPA has made a finding of unreasonable adverse effects. Bayer characterizes the condition in question as “unlawful,” and argues that EPA must afford Bayer a full adjudicatory hearing under FIFRA Section 6(b) before the registrations can be cancelled.
Because Bayer has not submitted the “voluntary” cancellation requests demanded by EPA, EPA has stated that it will initiate the cancellation process for conditional registrations established by FIFRA Section 6(e). Although this process affords Bayer an opportunity for an administrative hearing, the issues in a conditional registration hearing under FIFRA Section 6(e) are limited to “whether the registrant has initiated and pursued appropriate action to comply with the condition,” and the EPA determination concerning disposition of existing stocks. Bayer argues that the condition as it was originally imposed by EPA was improper and denies statutory due process rights, and that EPA must afford Bayer a full adjudicatory hearing under FIFRA Section 6(b) rather than the limited hearing provided under FIFRA Section 6(e).
This dispute presents a variety of important legal questions, including what authority EPA has under FIFRA to impose time limitations or expiration dates for pesticide registrations, the rights a registrant has when it applies to amend or to renew a time-limited registration, and the nature of the conditions that EPA may lawfully impose for a conditional registration under FIFRA Section 3(c)(7). The entire pesticide industry will be watching this matter with great interest.
By Lisa M. Campbell, Lisa R. Burchi, and James V. Aidala
On January 6, 2016, the U.S. Environmental Protection Agency (EPA), in collaboration with California’s Department of Pesticide Regulation (DPR) announced the release of a preliminary pollinator risk assessment for the neonicotinoid insecticide, imidacloprid (Preliminary Risk Assessment or Assessment). In its assessment, EPA states that imidacloprid potentially poses a risk to hives when the pesticide comes in contact with certain crops that attract pollinators.
EPA coordinated efforts with Canada’s Pest Management Regulatory Agency (PRMA). PMRA simultaneously released the overview and science evaluation of its imidacloprid pollinator-only assessment, which reaches the same preliminary conclusions as set forth in EPA’s Assessment. PMRA plans to release the complete assessment with appendices as a revised version on January 18, 2016, and to accept written comments until March 18, 2016.
EPA’s Preliminary Risk Assessment will be subject to a 60-day comment period commencing on the announcement of the Assessment in the Federal Register. EPA did not indicate how long it will be before the Federal Register notice is issued.
This Assessment is the first of four such assessments that will be prepared in 2016 under President Obama’s National Pollinator Strategy. The other three assessments, for neonicotinoid insecticides clothianidin, thiamethoxam, and dinotefuran, are scheduled to be released for public comment in December 2016. EPA also states that following the receipt of public comments on this Assessment by December 2016, it plans to issue a revised Preliminary Ecological Risk Assessment that will: “(i) consider any comments or information submitted in response to this bee-only preliminary risk assessment; (ii) incorporate additional data EPA anticipates to receive that is relevant to bees; and, (iii) assess the potential risks of all registered uses of imidacloprid to all taxa.”
EPA’s Preliminary Risk Assessment describes how EPA conducted a screening level assessment (Tier I) for the various uses of imidacloprid, with a stepwise, tiered risk assessment approach evaluating risks to individual bees first and, if needed, risks to the colony. EPA has divided its risk findings for honey bees for the registered use patterns of imidacloprid into three categories: (1) Crop Groups/Use Patterns that Present Low On-Field Risk; (2) Crop Groups/Use Patterns with Uncertainty in Colony (Tier II) Assessment; and (3) Crop Groups/Use Patterns with Colony (Tier II) Risk Indicated, with this last category including “Citrus Fruits (Oranges)” and “Oilseed (Cotton).” EPA further states: “Based on a tri-agency analysis of the statistical and biological considerations of the data, a NOAEC and LOAEC of 25 and 50 μg a.i./L in nectar were determined based on reductions of the number of adult workers, numbers of pupae, pollen stores and honey stores which persisted across much of the study duration. The level of imidacloprid in nectar at or below which no effects would be expected to the colony is determined to be 25 μg a.i./L.”
Additional information regarding EPA’s actions regarding neonicotinoid insecticides and the National Pollinator Strategy can be found on our blog. EPA stated its intent to hold a webinar regarding the imidacloprid Preliminary Risk Assessment in early February 2016. More information can be found on EPA’s website.
EPA’s statements about the assessment have indicated that imidacloprid uses on citrus and cotton are of greatest concern. Not included in this assessment is what, if any, specific regulatory actions might be needed to reduce any risks to an acceptable level. Regardless, the registrants, along with other stakeholders, will almost certainly comment on the assessment (likely to say that the risks are both overestimated, according to the registrants, and underestimated, according to environmental groups).
What may be of less notice is what EPA appears to conclude about the other uses of the pesticide. Not long ago, many claimed that significant honeybee decline was due to planting crops, especially corn, with neonicotinoid seed treatments such as imidacloprid. This assessment appears to contradict that assertion (along with other improvements that have been made in reducing fugitive dust exposures during application). And, even if EPA is correct in its assessment that the citrus and cotton uses are of concern, there are many other uses of imidacloprid currently suspended from the market in the European Union (EU) -- where cotton and citrus are not widely produced. This EPA assessment might become part of the debate about the rationale behind the current EU policies.
The documents released today are long (the assessment is 305 pages with an appendix of 212 pages). That EPA plans to complete its assessment within this calendar year indicates that current EPA leaders want any decision to be issued (or at least be framed) before the arrival of any new Administration. That alone will cause some to question the degree to which any actions are based more on “science and data” or on the “politics” of pollinator protection.