Final NAFTA Guidance for Conducting Terrestrial Field Dissipation Studies, 46226-46227 [E6-13042]
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46226
Federal Register / Vol. 71, No. 155 / Friday, August 11, 2006 / Notices
Brassica leafy vegetables and turnip
greens to control diamondback moth
larvae. Information in accordance with
40 CFR part 166 was submitted as part
of this request.
As part of this request, the Applicant
asserts that, the available alternative
controls are no longer providing
adequate control, and asserts that
resistance to some of them may be
developing. The Applicant claims that
another control chemical is needed to
use in rotation with registered materials,
to maintain season long control of the
diamondback moth in these crops, and
that without adequate control,
significant economic losses will be
suffered.
The Applicant proposes to make no
more than 4 applications of pyridalyl, at
a rate of up to 0.2 lbs. active ingredient
(a.i.) per acre (no more than 0.8 lbs. a.i.
total), on up to 32,000 acres, to Brassica
leafy vegetables (including but not
limited to cabbage, collard greens,
mustard greens, kale) and turnip greens,
in Georgia, for use year round, resulting
in use of up to a total of 25,600 lbs. a.i.
total.
This notice does not constitute a
decision by EPA on the application
itself. The regulations governing section
18 of FIFRA require publication of a
notice of receipt of an application for a
specific exemption proposing use of a
new chemical (i.e., an active ingredient)
which has not been registered by the
EPA. The notice provides an
opportunity for public comment on the
application.
The Agency, will review and consider
all comments received during the
comment period in determining
whether to issue the specific exemption
requested by the Georgia Department of
Agriculture.
List of Subjects
Environmental protection, Pesticides
and pests.
Dated: August 2, 2006.
Lois Rossi,
Director, Registration Division, Office of
Pesticide Programs.
[FR Doc. E6–13036 Filed 8–10–06; 8:45 am]
BILLING CODE 6560–50–S
hsrobinson on PROD1PC67 with NOTICES1
[EPA–HQ–OPP–2005–0129; FRL–8071–9]
Final NAFTA Guidance for Conducting
Terrestrial Field Dissipation Studies
Environmental Protection
Agency (EPA).
ACTION: Notice.
AGENCY:
15:03 Aug 10, 2006
I. General Information
A. Does this Action Apply to Me?
ENVIRONMENTAL PROTECTION
AGENCY
VerDate Aug<31>2005
SUMMARY: Under the North American
Free Trade Agreement (NAFTA), EPA
and the Canadian Pest Management
Regulatory Agency (PMRA) have agreed
to harmonize their testing guidelines so
that one set of tests can be used for the
registration of pesticides in Canada and
the United States. The NAFTA
harmonized guidance for terrestrial field
dissipation (TFD) studies are conducted
to demonstrate the transformation,
transport, and fate of pesticides under
representative actual use conditions.
These field studies are needed to
substantiate the physicochemical,
mobility, and biotransformation data
from laboratory studies. Environmental
fate studies have shown that pesticide
dissipation may proceed at different
rates under field conditions and may
result in degradates forming at levels
different from those observed in
laboratory studies. The objective of this
guidance document is to help ensure
that TFD studies are conducted in a
manner that will provide risk assessors
and risk managers with more confidence
in the data generated and with a better
understanding of the assumptions and
limitations of the data and estimated
half-lives of the pesticide. The proposed
guidance document for TFD studies was
published in the Federal Register on
June 15, 2005 (FRL–7713–7). After
reviewing the public comments for this
Notice, EPA developed a final guidance
document, which can be found at:
https://www.epa.gov/oppefed1/
ecorisk_ders/terrestrial_field_
dissipation_guidance.pdf. EPA’s
response to public comments can be
found in the public docket: EPA–HQ–
OPP–2005–0129.
FOR FURTHER INFORMATION CONTACT:
Mark Corbin, Environmental Fate and
Effects Division (7507P), Office of
Pesticide Programs, Environmental
Protection Agency, 1200 Pennsylvania
Ave., NW., Washington, DC 20460-0001;
telephone number: (703) 605-0033; fax
number: (703) 305-6309; e-mail address:
corbin.mark@epa.gov.
SUPPLEMENTARY INFORMATION:
Jkt 208001
You may be potentially affected by
this action if you are an agricultural
producer, food manufacturer, or
pesticide manufacturer. Potentially
affected entities may include, but are
not limited to:
• Crop production (NAICS code 111)
• Animal production (NAICS code
112)
• Food manufacturing (NAICS code
311)
PO 00000
Frm 00043
Fmt 4703
Sfmt 4703
• Pesticide manufacturing (NAICS
code 32532)
This listing is not intended to be
exhaustive, but rather provides a guide
for readers regarding entities likely to be
affected by this action. Other types of
entities not listed in this unit could also
be affected. The North American
Industrial Classification System
(NAICS) codes have been provided to
assist you and others in determining
whether this action might apply to
certain entities. If you have any
questions regarding the applicability of
this action to a particular entity, consult
the person listed under FOR FURTHER
INFORMATION CONTACT.
B. How Can I Get Copies of this
Document and Other Related
Information?
1. Docket. EPA has established a
docket for this action under docket
identification (ID) number EPA–HQ–
OPP–2005–0129. Publicly available
docket materials are available either in
the electronic docket at https://
www.regulations.gov, or, if only
available in hard copy, at the Office of
Pesticide Programs (OPP) Regulatory
Public Docket in Rm. S-4400, One
Potomac Yard (South Building), 2777 S.
Crystal Drive, Arlington, VA. The hours
of operation of this Docket Facility are
from 8:30 a.m. to 4 p.m., Monday
through Friday, excluding legal
holidays. The Docket telephone number
is (703) 305-5805.
2. Electronic access. You may access
this Federal Register document
electronically through the EPA Internet
under the ‘‘Federal Register’’ listings at
https://www.epa.gov/fedrgstr.
II. Background
A. What Action is the Agency Taking?
The Terrestrial Field Dissipation
study has been a basic requirement for
registrants of new and existing
pesticides since 1982. While laboratory
environmental fate studies are designed
to address one dissipation process at a
time, terrestrial field dissipation studies
address pesticide loss as a combined
result of chemical and biological
processes (e.g., hydrolysis, photolysis,
microbial transformation) and physical
migration (e.g., volatilization, leaching,
plant uptake). Data from these studies
can reduce potential overestimation of
exposure and risk and can confirm
assumptions of low levels of toxic
degradates. Results can be used to
propose scenario-specific effective risk
mitigation.
In general, the terrestrial field
dissipation study results should allow
the risk assessor to:
E:\FR\FM\11AUN1.SGM
11AUN1
Federal Register / Vol. 71, No. 155 / Friday, August 11, 2006 / Notices
• Compare predicted routes of
dissipation identified in the laboratory
with those measured in the field;
• Characterize the rates of dissipation
of the parent compound and formation
and decline of the major and/or
toxicologically significant
transformation products under field
conditions;
• Characterize the rates and relative
importance of the different transport
processes, including leaching, runoff,
and volatilization;
• Establish the distribution of the
parent compound and the major
transformation products in the soil
profile;
• Characterize the persistence of the
parent compound and major
transformation products in soil,
including retention and residue
carryover in the soil to the following
crop season; and
• Characterize the effect(s) of different
typical pesticide formulation categories,
where applicable.
EPA and PMRA have developed
harmonized guidance for conducting
terrestrial field dissipation studies so
that one set of tests can be used for
registration of a pesticide in Canada, the
United States, and Mexico. In
developing this guidance document,
EPA and PMRA conducted an extensive
outreach and review program, soliciting
input from stakeholders and the
technical community through several
forums: Three symposia, one Scientific
Advisory Panel (SAP) meeting, and one
workshop. Working closely with its
stakeholders, PMRA and EPA developed
a conceptual model for designing
terrestrial studies that will evaluate the
overall dissipation of a pesticide in the
field. The conceptual model, which is
specific for each pesticide, is based on
the chemical’s physicochemical
properties, laboratory environmental
fate studies, formulation type and
intended use pattern. On June 15, 2005,
the Agency published the draft
harmonized guidance and conceptual
model in the Federal Register and asked
for comments. After reviewing all the
comments, PMRA and EPA developed
the final guidance, which can be found
at the following address: https://
www.epa.gov/oppefed1/ecorisk_ders/
terrestrial_field_dissipation_
guidance.pdf.
B. What is the Agency’s Authority for
Taking this Action?
This action is being taken under the
Federal Insecticide, Fungicide, and
Rodenticide Act (FIFRA).
List of Subjects
Environmental protection, Terrestrial
field dissipation, NAFTA harmonized
guidance.
Dated: August 3, 2006.
Steven Bradbury,
Director, Environmental Fate and Effects
Division, Office of Pesticide Programs.
FR Doc. E6–13042 Filed 8–10–06; 8:45 am]
BILLING CODE 6560–50–S
ENVIRONMENTAL PROTECTION
AGENCY
[FRL–8208–2]
Clean Water Act Section 303(d):
Availability of Thirty Oklahoma Total
Maximum Daily Loads (TMDLs) for
Public Comment
Environmental Protection
Agency (EPA).
ACTION: Notice of availability of thirty
Oklahoma TMDLs for public comment.
AGENCY:
SUMMARY: This notice announces the
availability for public comment of thirty
TMDLs, and their administrative record
files prepared by EPA Region 6 for
certain waters listed in the Upper
Canadian River and Turkey Creek
Watersheds of Oklahoma, under section
303(d) of the Clean Water Act (CWA).
DATES: Comments must be submitted in
writing to EPA on or before September
11, 2006.
ADDRESSES: Comments on the thirty
TMDLs should be sent to Diane Smith,
Environmental Protection Specialist,
Water Quality Protection Division, U.S.
Environmental Protection Agency
Region 6, 1445 Ross Ave., Dallas, TX
75202–2733 or e-mail:
hsrobinson on PROD1PC67 with NOTICES1
Segment
Canadian River ................................................
Bear Creek .......................................................
Canadian River ................................................
Trail Creek .......................................................
Lone Creek ......................................................
Red Trail Creek ................................................
Red Creek ........................................................
Hackberry Creek ..............................................
Commission Creek ...........................................
Deer Creek .......................................................
smith.diane@epa.gov. For further
information, contact Diane Smith at
(214) 665–2145 or fax 214–665–7373.
The administrative record files for the
thirty TMDLs are available for public
inspection at this address as well.
Documents from the administrative
record files may be viewed at https://
www.epa.gov/region6/6wq/npdes/tmdl/
index.htm, or obtained by calling or
writing Ms. Smith at the above address.
Please contact Ms. Smith to schedule an
inspection.
FOR FURTHER INFORMATION CONTACT:
Diane Smith at (214) 665–2145.
SUPPLEMENTARY INFORMATION: On March
10, 2006, EPA Region 6 made a
commitment to the EPA Headquarters
Office of Water under EPA’s National
Water Program Fiscal Year 2006
Guidance for the program activity
measure (PAM) number WQ–12, to
establish or approve a total of 188
TMDLs in fiscal year (FY) 2006. Under
the PAM number WQ–12, EPA expected
the Oklahoma Department of
Environmental Quality (ODEQ) to
develop a total of 87 TMDLs in fiscal
year (FY) 2006 and submit them for
EPA’s approval. By the end of July 2006,
ODEQ had submitted two final TMDLs
for EPA’s approval and 30 draft TMDLs
for EPA’s review and comments. EPA
has approved the two final TMDLs
submitted by ODEQ. However, a recent
discussion between EPA Region 6 and
ODEQ senior managers determined that
although substantial progress has been
made on the other TMDLs, the
remainder of the TMDLs needed to meet
the commitment could not be completed
by the target date. Accordingly, EPA
Region 6 has decided to conduct the
public participation process for these
thirty TMDLs and establish the final
TMDLs on or before September 30,
2006, to meet the FY06 PAM
commitment.
EPA Seeks Comment on Thirty TMDLs
By this notice EPA is seeking public
comment on the following thirty TMDLs
for certain waters located within
Oklahoma’s Upper Canadian River and
Turkey Creek Watersheds:
Waterbody name
Upper Canadian River Watershed:
OK520620010010_00 .................................
OK520620010120_00 .................................
OK520620020010_00 .................................
OK520620020090_00 .................................
OK520620030020_00 .................................
OK520620030050_00 .................................
OK520620030110_00 .................................
OK520620040050_00 .................................
OK520620050160_00 .................................
OK520620060010_00 .................................
VerDate Aug<31>2005
15:03 Aug 10, 2006
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Pollutant
Fecal coliform
E. coli, Enterococci, and Fecal coliform
Enterococci, and Fecal coliform
E. coli, Enterococci, and Fecal coliform
E. coli and Enterococci
E. coli, Enterococci, and Fecal coliform
E. coli, Enterococci, and Fecal coliform
E. coli and Enterococci
E. coli and Enterococci
E. coli and Enterococci
E:\FR\FM\11AUN1.SGM
11AUN1
]]>Agencies
[Federal Register Volume 71, Number 155 (Friday, August 11, 2006)]
[Notices]
[Pages 46226-46227]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E6-13042]
-----------------------------------------------------------------------
ENVIRONMENTAL PROTECTION AGENCY
[EPA-HQ-OPP-2005-0129; FRL-8071-9]
Final NAFTA Guidance for Conducting Terrestrial Field Dissipation
Studies
AGENCY: Environmental Protection Agency (EPA).
ACTION: Notice.
-----------------------------------------------------------------------
SUMMARY: Under the North American Free Trade Agreement (NAFTA), EPA and
the Canadian Pest Management Regulatory Agency (PMRA) have agreed to
harmonize their testing guidelines so that one set of tests can be used
for the registration of pesticides in Canada and the United States. The
NAFTA harmonized guidance for terrestrial field dissipation (TFD)
studies are conducted to demonstrate the transformation, transport, and
fate of pesticides under representative actual use conditions. These
field studies are needed to substantiate the physicochemical, mobility,
and biotransformation data from laboratory studies. Environmental fate
studies have shown that pesticide dissipation may proceed at different
rates under field conditions and may result in degradates forming at
levels different from those observed in laboratory studies. The
objective of this guidance document is to help ensure that TFD studies
are conducted in a manner that will provide risk assessors and risk
managers with more confidence in the data generated and with a better
understanding of the assumptions and limitations of the data and
estimated half-lives of the pesticide. The proposed guidance document
for TFD studies was published in the Federal Register on June 15, 2005
(FRL-7713-7). After reviewing the public comments for this Notice, EPA
developed a final guidance document, which can be found at: https://
www.epa.gov/oppefed1/ecorisk_ders/terrestrial_field_dissipation_
guidance.pdf. EPA's response to public comments can be found in the
public docket: EPA-HQ-OPP-2005-0129.
FOR FURTHER INFORMATION CONTACT: Mark Corbin, Environmental Fate and
Effects Division (7507P), Office of Pesticide Programs, Environmental
Protection Agency, 1200 Pennsylvania Ave., NW., Washington, DC 20460-
0001; telephone number: (703) 605-0033; fax number: (703) 305-6309; e-
mail address: corbin.mark@epa.gov.
SUPPLEMENTARY INFORMATION:
I. General Information
A. Does this Action Apply to Me?
You may be potentially affected by this action if you are an
agricultural producer, food manufacturer, or pesticide manufacturer.
Potentially affected entities may include, but are not limited to:
Crop production (NAICS code 111)
Animal production (NAICS code 112)
Food manufacturing (NAICS code 311)
Pesticide manufacturing (NAICS code 32532)
This listing is not intended to be exhaustive, but rather provides
a guide for readers regarding entities likely to be affected by this
action. Other types of entities not listed in this unit could also be
affected. The North American Industrial Classification System (NAICS)
codes have been provided to assist you and others in determining
whether this action might apply to certain entities. If you have any
questions regarding the applicability of this action to a particular
entity, consult the person listed under FOR FURTHER INFORMATION
CONTACT.
B. How Can I Get Copies of this Document and Other Related Information?
1. Docket. EPA has established a docket for this action under
docket identification (ID) number EPA-HQ-OPP-2005-0129. Publicly
available docket materials are available either in the electronic
docket at https://www.regulations.gov, or, if only available in hard
copy, at the Office of Pesticide Programs (OPP) Regulatory Public
Docket in Rm. S-4400, One Potomac Yard (South Building), 2777 S.
Crystal Drive, Arlington, VA. The hours of operation of this Docket
Facility are from 8:30 a.m. to 4 p.m., Monday through Friday, excluding
legal holidays. The Docket telephone number is (703) 305-5805.
2. Electronic access. You may access this Federal Register document
electronically through the EPA Internet under the ``Federal Register''
listings at https://www.epa.gov/fedrgstr.
II. Background
A. What Action is the Agency Taking?
The Terrestrial Field Dissipation study has been a basic
requirement for registrants of new and existing pesticides since 1982.
While laboratory environmental fate studies are designed to address one
dissipation process at a time, terrestrial field dissipation studies
address pesticide loss as a combined result of chemical and biological
processes (e.g., hydrolysis, photolysis, microbial transformation) and
physical migration (e.g., volatilization, leaching, plant uptake). Data
from these studies can reduce potential overestimation of exposure and
risk and can confirm assumptions of low levels of toxic degradates.
Results can be used to propose scenario-specific effective risk
mitigation.
In general, the terrestrial field dissipation study results should
allow the risk assessor to:
[[Page 46227]]
Compare predicted routes of dissipation identified in the
laboratory with those measured in the field;
Characterize the rates of dissipation of the parent
compound and formation and decline of the major and/or toxicologically
significant transformation products under field conditions;
Characterize the rates and relative importance of the
different transport processes, including leaching, runoff, and
volatilization;
Establish the distribution of the parent compound and the
major transformation products in the soil profile;
Characterize the persistence of the parent compound and
major transformation products in soil, including retention and residue
carryover in the soil to the following crop season; and
Characterize the effect(s) of different typical pesticide
formulation categories, where applicable.
EPA and PMRA have developed harmonized guidance for conducting
terrestrial field dissipation studies so that one set of tests can be
used for registration of a pesticide in Canada, the United States, and
Mexico. In developing this guidance document, EPA and PMRA conducted an
extensive outreach and review program, soliciting input from
stakeholders and the technical community through several forums: Three
symposia, one Scientific Advisory Panel (SAP) meeting, and one
workshop. Working closely with its stakeholders, PMRA and EPA developed
a conceptual model for designing terrestrial studies that will evaluate
the overall dissipation of a pesticide in the field. The conceptual
model, which is specific for each pesticide, is based on the chemical's
physicochemical properties, laboratory environmental fate studies,
formulation type and intended use pattern. On June 15, 2005, the Agency
published the draft harmonized guidance and conceptual model in the
Federal Register and asked for comments. After reviewing all the
comments, PMRA and EPA developed the final guidance, which can be found
at the following address: https://www.epa.gov/oppefed1/ecorisk_ders/
terrestrial_field_dissipation_guidance.pdf.
B. What is the Agency's Authority for Taking this Action?
This action is being taken under the Federal Insecticide,
Fungicide, and Rodenticide Act (FIFRA).
List of Subjects
Environmental protection, Terrestrial field dissipation, NAFTA
harmonized guidance.
Dated: August 3, 2006.
Steven Bradbury,
Director, Environmental Fate and Effects Division, Office of Pesticide
Programs.
FR Doc. E6-13042 Filed 8-10-06; 8:45 am]
BILLING CODE 6560-50-S
