| PESTICIDE
BRIEFS (6/25/02)
CONTENTS
(1) ATRAZINE:
COMMENTS REQUESTED ON RISK MITIGATION
(2) METHIDATHION
REREGISTRATION
(3) BUSH
PROCLAIMS JUNE NATIONAL PEST MANAGEMENT MONTH
(4) IR-4
PROGRAM
(5) METHYL
BROMIDE ON CUT FLOWERS.
(6) IR-4
AND SECTION 18'S
(7) NEW
METHYL BROMIDE ALTERNATIVE - FURFURAL
(8) PESTICIDE
CANDIDATES FOR RISK MANAGEMENT DECISIONS
(9)
TOLERANCE REVOCATIONS COMPLETED FOR NICOTINE
(10) REASSESSMENT
OF NON-CONTRIBUTING OP TOLERANCES
(11) FACT
SHEET ON WEST NILE VIRUS
(12) BALTIMORE
MAN DIES OF WEST NILE VIRUS
(13) ENDOSULFAN
TASK FORCE DISCUSSES MITIGATION.
(14) NEW
PESTICIDE APPLICATION EQUIPMENT
(15) STARLINK
CORN DETECTED IN US AID FOOD
(16) VINCLOZOLIN
TOLERANCE REVOCATIONS. CHANNELS OF TRADE PROVISIONS
(17) DIFENZOQUAT,
DIQUAT DIBROMIDE, FENBUTATIN-OXIDE, NORFLURAZON
TOLERANCE REASSESSMENT
(18) OP REVISED
CUMULATIVE RISK ASSESSMENT
(19) METHYL AND
ETHYL PARATHION TOLERANCE REVOCATIONS
(20) PROPANIL TOLERANCE
REASSESSMENT AND PRELIMINARY RISK ASSESSMENT
(21) LINURON
(22) FENBUTATIN-OXIDE
AND NORFLUORAZON
(23) CARBENDAZIM
(MBC) IN PAINT
(24) METAM SODIUM,
METHYL BROMIDE ALTERNATIVE
(25) PROPYLENE
OXIDE, METHYL BROMIDE ALTERNATIVE.
(1) ATRAZINE
RISK ASSESSMENTS ARE RELEASED; COMMENTS REQUESTED ON RISK MITIGATION
EPA
has announced the availability of the revised human health and environmental
fate and effects risk assessments for atrazine. Comments will be
taken until July 5, 2002. The public is invited to submit risk mitigation
ideas and proposals. EPA plans to complete an Interim Reregistration Eligibility
Decision (IRED) for atrazine in early August.
One of the
most widely used agricultural pesticides in the U.S., atrazine is registered
to control weeds in field and sweet corn, sorghum, sugarcane,
and other agricultural crops, as well as on residential lawns
and turf. Although it is not likely to be carcinogenic to
humans, atrazine has been associated with causing imbalances in hormone
levels, possibly disrupting reproductive and developmental processes. EPA
has concerns regarding some exposures to atrazine, including possible risks
from consuming drinking water from certain community water systems and
some rural wells in atrazine use areas and possible risks from contact
with recently treated lawns. The atrazine risk assessments and related
documents are available from EPA’s website at: http://www.epa.gov/oppsrrd1/reregistration/atrazine
. The Federal Register notice is available at: http://www.epa.gov/fedrgstr/EPA-PEST/2002/May/Day-06/p11159.htm
You may
submit comments through the mail, in person, or electronically. To ensure
proper receipt by EPA, identify docket control number OPP-34237C in the
subject line on the first page of your response. Submit comments
to: Public Information and Records Integrity Branch, Information Resources
and Services Division (7502C), Office of Pesticide Programs, Environmental
Protection Agency, 1200 Pennsylvania Ave., NW, Washington, DC 20460.
Let me know if you need help submitting comments.
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(2) METHIDATHION
REREGISTRATION
EPA has
announced the availability of the Interim Reregistration Eligibility Decision
document for methidathion (Supracide, Ultracide, Suprathion).
This interim decision was developed as part of the OP pilot public participation
process that EPA and USDA are now using for involving the public in the
reassessment of pesticide tolerances under FQPA and the reregistration
of individual OP’s under FIFRA.
Used on a variety
of agricultural crops, predominantly alfalfa, citrus, and
cotton,
methidathion residues in food and drinking water do not pose risk concerns.
Methidathion has no residential uses. EPA considered the mitigation
proposal submitted by the technical registrant, as well as comments and
mitigation ideas from other interested parties, and has decided on a number
of label amendments (restrictions) to reduce risks of concern posed by
the uses of methidathion. With the implementation of these changes,
methidathion's worker and ecological risks also will be below levels of
concern for reregistration. The methidathion interim risk management
decision documents released to the public are available on EPA's web site
http://www.epa.gov/oppsrrd1/op/methidathion.htm
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(3) PRESIDENT
BUSH PROCLAIMS JUNE NATIONAL PEST MANAGEMENT MONTH
President
Bush has proclaimed June as National Pest Management Month, acknowledging
the serious threat that pests pose to human health and property.
Pests such as termites cause more than $2 billion in damage to American
homes per year.
“Research
has found that cockroaches and other pests are significant factors in many
serious illnesses,” said Cynthia Mannes, Director of Public Affairs for
the National Pest Management Association (NPMA). “Pests transmit
or aggravate West Nile Virus, Asthma and Lyme Disease. National Pest
Management Month was designed to make the public aware of these dangers
and give them the information they need to protect their homes and families.”
Cockroach and mice allergens can aggravate asthma in children, especially
in the inner city, according to research conducted by Johns Hopkins University
and other leading research institutions. Mannes recommends that homeowners
consult a pest management professional to inspect their homes for signs
of insect or rodent infestation. A professional can treat the home
to remove pests or offer homeowners tips for prevent infestation.
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(4) IR-4
IR-4
(Interregional Research Project No. 4) is the principal publicly funded
effort to gain EPA-approved tolerances for safe and effective pest control
products on specialty food crops such as fruits, vegetables,
herbs, and others. IR-4 also develops data to assist in the registration
of pest control tools for floral, forestry, nursery and turf
crops. With funding and support from USDA (both CSREES and ARS), and State
Agricultural Experiment Stations, IR-4 coordinates a grass roots effort
to provide pest control alternatives compatible with specialty crop integrated
pest management programs. For more information about IR-4, see http://www.cook.rutgers.edu/~ir4.
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(5) METHYL
BROMIDE ON CUT FLOWERS.
IR-4
research data will be supporting the efforts of the California Cut Flower
Commission in obtaining a Critical Use Exemption (CUE). If approved, the
CUE will allow continued use of methyl bromide beyond the scheduled
2005 phase out date. Dr. Jack Norton, MBA Program Manager, met with the
California Cut Flower Commission in May to help prepare the CUE and plan
field programs to support this effort for California cut flowers.
IR-4 is actively involved in field research programs designed to find suitable
methyl bromide replacements for the cut flower industry. For more information
contact Dr. Jack Norton, norton@aesop.rutgers.edu.
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(6) IR-4
AND SECTION 18'S
By EPA’s
count, the need for 56 emergency exemptions was eliminated for the FY2002
growing season due to new registrations made possible by the IR-4 Project.
Azoxystrobin,
an example of an important pest control tool that recently achieved registration
status through IR-4, had been the object of Section 18 requests by as many
as 13 states for a multitude of specialty crops. For more information contact
Dr. Dan Kunkel, kunkel@aesop.rutgers.edu.
EPA has proposed three reforms to the Section
18 process.
Renewable exemptions:
States would have the ability to “re-certify”
the emergency situation for up to 2 years following initial EPA authorization.
Exemptions for resistance management:
An emergency exemption would be allowed
for an alternative to be used in conjunction with the registered pesticide
where there is documented scientific evidence that resistance has or is
developing, even thought significant economic loss may not yet be evident.
Defining economic loss:
A tiered set of criteria would be used
to simplify the determination of significant economic loss.
The reforms are expected to be published
in the Federal Register for public comment during summer, 2002 and will
be implemented, on an interim basis, for the 2003 growing season. For more
information contact Dr. Robert Holm, holm@aesop.rutgers.edu.
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(7) NEW
METHYL BROMIDE ALTERNATIVE - FURFURAL
EPA has
been talking with Harborchem, potential registrants of a new methyl bromide
alternative, furfural. Furfural
has been declared as "generally regarded as safe" (GRAS) by FDA and is
found in many food items, including bread and coffee. As a methyl
bromide alternative, it acts as a nematode repellent. Initial
efficacy work by IR-4 shows good potential for furfural in nematode control.
EPA offered the company advice as they continue to develop their registration
application. EPA will likely receive an application for this new
methyl bromide alternative in late 2002/early 2003.
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(8) EPA
LISTS PESTICIDE CANDIDATES FOR RISK MANAGEMENT DECISIONS THROUGH FY 2003.
EPA
has released a list of pesticides for which reregistration and/or tolerance
reassessment decisions may be completed during the rest of FY 2002 through
FY 2003. This information is available on the EPA website at
http://www.epa.gov/pesticides/reregistration/candidates.htm
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(9) TOLERANCE
REVOCATIONS COMPLETED FOR NICOTINE
On
May 22, 2002, EPA published a rule revoking 66 specific tolerances for
residues of the insecticide nicotine because all registrations for
these pesticide uses have been canceled. The only remaining food
uses for nicotine are cucumbers, lettuce, and tomatoes.
The notice with details of these revocations is available on EPA's web
site: http://www.epa.gov/fedrgstr/EPA-PEST/2002/May/Day-22/p12423.htm
. These tolerance revocations will be effective on August 20, 2002.
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(10) EPA
PUBLISHES FEDERAL REGISTER NOTICE ON REASSESSMENT OF NON-CONTRIBUTING ORGANOPHOSPHATE
TOLERANCES
On
May 22, EPA announced reassessment of 275 OP tolerances that do
not contribute to risk. This action is part of its review of OP and
other pesticide tolerances under FQPA. EPA considers these tolerances
reassessed. The 275 OP non-contributor tolerances make at most a
negligible contribution to the cumulative risk from the OP pesticides.
These tolerances result in minimal or no detectable residues in food and
are expected to have negligible effects through drinking water. They
therefore meet the FQPA safety standard in section 408(b) (2) of the Federal
Food, Drug, and Cosmetic Act and can be considered reassessed. For
more information, go to:
http://www.epa.gov/fedrgstr/EPA-PEST/2002/May/Day-22/p12713.htm
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(11) NEW
FACT SHEET ON WEST NILE VIRUS
Go to: http://www.ncpmc.org/NewsAlerts/2002WestNileAlert.pdf
Let me know if you get questions on West
Nile Virus or mosquito control.
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(12)
BALTIMORE MAN DIES OF WEST NILE VIRUS
The
Baltimore Sun reported on June 1, 2002 that John C. Wood was the city's
first victim of West Nile virus. In August, 2001, Wood developed
West Nile Fever and was admitted to Sinai Hospital. He never became
well enough to return home. The virus left him brain-damaged, unable to
speak in full sentences or swallow properly. He eventually developed
a lung infection and died. He was 73. Though the immediate cause
of death was pneumonia, doctors are confident that the root cause was West
Nile virus, which had made him prone to inhaling fluids into his lungs.
To date six people in Maryland have became ill from the virus and three
-- including Wood – have died.
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(13) ENDOSULFAN
TASK FORCE DISCUSSES MITIGATION.
On June 11, EPA met with representatives of Makhteshim-Agan and Aventis
to discuss mitigation options regarding the ecological risks associated
with the reregistration eligibility decision on endosulfan (Thiodan)
.
Although the registrants were not in complete agreement with EPA’s interpretation
of the endosulfan assessment, they did agree to consider steps to mitigate
potential aquatic exposure. These steps included maintaining vegetative
buffer strips to limit runoff, reducing application rates, restricting
use on highly erodible lands, geographic restrictions by crop, surface
water monitoring, and increased outreach to growers to better educate them
on the proper usage of endosulfan. Because atmospheric transport of endosulfan
has been linked to declines in endangered species populations, the focus
of mitigation is not limited to reducing runoff; rather, mitigation must
include reducing the atmospheric load of this persistent and toxic pesticide.
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(14) NEW
PESTICIDE APPLICATION EQUIPMENT
Degesch
America, Inc. has a new Degesch Generator. This stand alone machine
generates phosphine gas from Magnesium phosphide granules (a new product
under registration) for fumigation of warehouses and ship holds to control
stored grain pests in raw agricultural commodities and processed food packages.
The Degesch Generator can produce sufficient phosphine to fumigate large
areas in a matter of minutes as compared with conventional fumigants, which
takes 2-5 days to release an effective concentration of phosphine. Other
advantages of this machine are that it reduces the total fumigation time;
can better control concentration of phosphine gas in fumigation chambers;
and, is safer to applicators, as no handling of phosphine generating products
are involved during and post treatment.
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(15) STARLINK
CORN DETECTED IN US AID FOOD
The
Friends of the Earth ( http://www.foe.org/foodaid/
) and Genetic Engineered Food Alert ( http://www.gefoodalert.org/News/news.cfm?News_ID=3333
) have recently announced contamination of donated US AID food (corn soy
blend) with StarLink Cry9(c) protein. The presence of the protein
was detected by Genetic ID Laboratories. EPA has been in contact
with the USAID contractor responsible for the program and the USDA Grain
Inspection, Packers and Stockyards Administration (GIPSA) program
which tests all U.S. AID corn products prior to export. According
to USDA, the corn soy blend in question was shipped in March, 2000 prior
to the initiation of the StarLink testing program. All of that shipment
(with the exception of the bag tested) has been consumed, with no adverse
reactions or incidents reported.
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(16) VINCLOZOLIN
TOLERANCE REVOCATIONS AND CHANNELS OF TRADE PROVISIONS ANNOUNCED.
On
June 12, EPA published a final rule in the Federal Register, effective
that day, revising the tolerances for the fungicide vinclozolin (Ronilan)
by revoking tolerances for strawberries, stone fruits, cucumbers, and
bell peppers. These revocations were proposed by the Agency
in an FR notice published on July 10, 2001. No comments were received
during the 60-day public comment period. In a related notice, the
Food and Drug Administration (FDA) announced the availability of a guidance
document presenting its planned enforcement approach for foods containing
vinclozolin residues. This guidance will assist firms in understanding
the types of information on treatment of commodities that FDA may find
useful in implementing channels of trade provisions. For information,
go to: http://www.epa.gov/fedrgstr/EPA-PEST/2002/June/Day-12/p13520.htm
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(17) DIFENZOQUAT,
DIQUAT DIBROMIDE, FENBUTATIN-OXIDE, NORFLURAZON TOLERANCE REASSESSMENT
EPA
has reviewed existing tolerances for difenzoquat (Avenge), diquat dibromide
(Reward, Reglone, Regloz), fenbutatin-oxide (Vendex), and norflurazon
(Solicam), and considers the 166 associated tolerances reassessed as
having met the safety standard under the Federal Food, Drug, and Cosmetic
Act (FFDCA). No risk mitigation or changes to existing labeling are
necessary. Public comment is invited on these decisions for 30 days.
The Agency's Reports on FQPA Tolerance Reassessment Progress and Risk Management
Decisions (or TREDs) for norflurazon and fenbutatin-oxide were announced
in the June 11, 2002, Federal Register at: http://www.epa.gov/fedrgstr/EPA-PEST/2002/June/Day-11/p14636.htm
; comments must be received on or before July 11, 2002. TRED documents
for difenzoquat and diquat dibromide were announced in the June 12, 2002,
Federal Register at: http://www.epa.gov/fedrgstr/EPA-PEST/2002/June/Day-12/p14371.htm
; comments on these documents must be received on or before July 12, 2002.
EPA
had completed Reregistration Eligibility Decisions (REDs) for these four
pesticides in the mid-1990s, prior to enactment of FQPA. EPA must
review tolerances and tolerance exemptions that were in effect when FQPA
was enacted to ensure that these existing pesticide residue limits for
food and feed commodities meet the safety standard brought about by the
new law.
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(18) REVISED
CUMULATIVE RISK ASSESSMENT FOR OP’S
EPA
has released a revised assessment of the cumulative risks of OP’s
and is making the document available for public comment and scientific
peer review of the methodologies used in its development. With this
groundbreaking work, EPA is nearing completion of a process to evaluate
over a thousand organophosphate pesticide food tolerances (legal residue
limits), virtually all of which are expected to meet the highest, most
rigorous safety standards.
In
the past, tolerances were established for individual active ingredients
and were based only on dietary exposure. Now, FQPA requires EPA to
fit all pesticides with a similar mode of action into one tolerance risk
cup. In addition, EPA must consider pesticide exposure from diet,
drinking water, lawn care and residential sources (Aggregate Exposure).
In
the last several years, EPA has taken a variety of regulatory actions on
OP’s, ranging from lowering application rates to complete cancellation
of specific uses. These actions have substantially reduced the risks,
and have contributed to the high level of safety found in the cumulative
risk assessment. These actions have also reduced the number of tools
that pesticide applicators have available to them.
EPA
is still working to evaluate certain food and residential uses of individual
OP’s where additional risk mitigation will likely be necessary. In
the next several weeks, EPA will continue the scientific and regulatory
work to evaluate and address these potential risks. In addition,
the cumulative exposure assessment shows that drinking water is not a significant
contributor to overall risk.
In
this risk assessment, EPA has evaluated potential exposures to 30 OP’s,
taking into account food, drinking water and residential uses. EPA
has employed methodologies to account for variability in potential exposures
based on age, seasonal and geographic factors. The assessment relied
on a large variety of data sources, such as monitoring data that measure
pesticide residues found in food, in order to obtain the most realistic
estimates of actual exposure to the population from OP pesticides.
The assessment includes consideration of the FQPA safety factor for protecting
sensitive populations, including infants and children. The Executive
Summary, Questions and Answers, Summaries, as well as the detailed Scientific
Chapters, are at: http://www.epa.gov/pesticides/cumulative
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(19) METHYL
AND ETHYL PARATHION TOLERANCE REVOCATIONS
On
June 5, 2002, EPA published a final rule to revoke 73 tolerances for residues
of the insecticides methyl parathion (Penncap-M) and ethyl parathion.
The 73 tolerances are revoked because there are no registered uses for
methyl parathion or ethyl parathion on these commodities. All uses
of ethyl parathion have been canceled. There are 25 remaining crop
uses for methyl parathion; the 29 tolerances associated with these uses
are not being revoked. The notice lists the tolerances being revoked
and is available on EPA's web site at:
http://www.epa.gov/fedrgstr/EPA-PEST/2002/June/Day-05/p13519.htm
This
rule becomes effective September 3, 2002. Certain ethyl parathion
tolerances expire on December 31, 2005. All others are revoked effective
September 3, 2002. See the Federal Register notice for details. EPA
believes that affected commodities should have cleared channels of trade
before the proposed effective dates of these tolerance revocations. Commodities
containing pesticide residues not covered by a tolerance are considered
to be adulterated and are subject to seizure.
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(20)
PROPANIL TOLERANCE REASSESSMENT AND PRELIMINARY RISK ASSESSMENT
On
June 5, 2002, EPA announced the tolerance reassessment decision for propanil
(Surcopur, Stam, Stampede, Strel) and released the accompanying human
health and ecological effects risk assessment
and related documents.
Propanil is a selective post-emergent herbicide registered on rice,
barley, oats and spring wheat to control broadleaf and grass
weeds in commercial settings. Propanil is also registered (but not
currently marketed) for turf use at commercial sod farms.
EPA’s
reassessment of dietary risk, including public exposure through food and
drinking water, as required by the Federal Food, Drug and Cosmetic Act
(FFDCA), indicates that propanil poses no risk concerns; therefore, no
risk mitigation is needed and no further actions related to dietary risk
are warranted at this time. EPA will complete a Reregistration Eligibility
Decision (RED) document for propanil later in 2002. The RED will
address risk to workers and the environment and any additional data requirements.
Also, some commodity definitions must be updated. The established
tolerances remain in effect until such time as a full reassessment of the
cumulative risk from all anilide pesticides, such as propanil, may be needed
and completed.
EPA
will accept comments on the tolerance reassessment decision until July
5,2002. In the absence of substantive comments, the tolerance reassessment
decision will be considered final. Comments on the human health and
ecological effects risk assessments will be accepted until August 5, 2002
and included in the OPP Public Regulatory Docket. The risk assessment
documents and tolerance reassessment documents are available on EPA's Web
site at: http://www.epa.gov/pesticides/reregistration/propanil/
. The Federal Register notice of June 5, 2002 announcing is available
on EPA's Web site at:
http://www.epa.gov/fedrgstr/EPA-PEST/2002/June/Day-05/p13809.htm
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(21)
LINURON.
On
May 30, EPA talked with IR-4, USDA, the National Potato Council, Griffin
LLC, and Landis International on the Tolerance Reassessment Decision (TRED)
for linuron (Linex, Lorox), a herbicide used in several
crops. Dietary risk from exposure to linuron is low. All
estimated environmental concentrations (EECs) are below the Drinking Water
Level of Comparison (DWLOC), except for the chronic surface water EEC (18)
which slightly exceeds the chronic DWLOC (6). All 38 tolerances have
been reassessed. Two new minor crop uses were established on rhubarb
and celeriac. The Federal Register notice announcing the availability
of EPA’s risk assessments and the opening of a 30-day public comment period
will be published shortly.
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(22) FENBUTATIN-OXIDE
AND NORFLUORAZON.
Tolerance
reassessments for the acaricide fenbutatin-oxide (Vendex) and the
selective herbicide norfluorazon (Solicam) are near completion.
Because risks for neither of these compounds are of concern, EPA is using
a shortened process but will accept public comments on the final decisions.
A Federal Register notice will be published in the next few weeks announcing
the availability of the decision documents and risk assessments in the
docket and on EPA’S website
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(23) CARBENDAZIM
(MBC) IN PAINT
EPA
has finalized the terms of risk mitigation for the fungicide Carbendazim
(MBC) in paint. Troy Chemical Company, the sole registrant of
MBC paint additives, agreed to reduce their maximum concentration of MBC
in paint and restrict MBC to paints intended for exterior use only.
This eliminates inhalation concerns for homeowners applying paint containing
MBC with airless sprayers. Sale and distribution of currently labeled
products must cease by December 31, 2002, unless review of a new inhalation
study indicates that risk is acceptable at the current 0.5% concentration.
Troy is initiating a new 5-day inhalation study with MBC in hopes that
it will result in a higher NOAEL than the current subchronic inhalation
study, which used benomyl as a surrogate.
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(24) METAM
SODIUM, METHYL BROMIDE ALTERNATIVE
EPA
has met with the Metam Sodium (Vapan) Task Force to discuss the
results of new research, the efficacy and economics of their methyl
bromide alternative, and current regulatory constraints hindering the
adoption of their compound as a methyl bromide alternative. Specifically,
the Task Force discussed the results of studies showing that intermittently
watering treated fields, for several days following application of metam
sodium, significantly reduces the potential for off-gassing of methyl isothiocyanate,
the by-product of metam sodium. The Task Force is interested in having
EPA review their exposure assessment methodology in anticipation of the
upcoming RED for metam sodium. The Task Force believes that models
recently developed by EPA's laboratories at Research Triangle Park have
promise to provide state-of-the-art exposure assessment capabilities for
soil fumigants.
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(25) PROPYLENE
OXIDE, METHYL BROMIDE ALTERNATIVE.
EPA
has met with representatives from Aberco to discuss the data requirements
for new uses of propylene oxide (PPO). This fumigant
is currently registered for post-harvest uses of nuts, spices, and cocoa.
In collaboration with IR-4, the registrant has developed PPO as a potential
soil fumigant, particularly for non-food uses. EPA staff walked
the registrant through the data requirements and provided guidance on the
types of worker exposure studies necessary for registration as well as
the issues that would need to be addressed if the registrant sought food
uses. More meetings are needed. Stay tuned.
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