Nitric Acid; Exemption From the Requirement of a Tolerance, 67375-67379 [2022-23978]
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Federal Register / Vol. 87, No. 215 / Tuesday, November 8, 2022 / Rules and Regulations
ENVIRONMENTAL PROTECTION
AGENCY
Environmental Protection Agency, 1200
Pennsylvania Ave. NW, Washington, DC
20460–0001; main telephone number:
(202) 566–1030; email address:
RDFRNotices@epa.gov.
SUPPLEMENTARY INFORMATION:
40 CFR Part 180
I. General Information
[EPA–HQ–OPP–2022–0363; FRL–10247–01–
OCSPP]
A. Does this action apply to me?
[FR Doc. 2022–23997 Filed 11–7–22; 8:45 am]
BILLING CODE 6560–50–P
Nitric Acid; Exemption From the
Requirement of a Tolerance
Environmental Protection
Agency (EPA).
ACTION: Final rule.
AGENCY:
This regulation establishes an
exemption from the requirement of a
tolerance for residues of nitric acid
(CAS Reg. No. 7697–37–2) when used as
an inert ingredient (pH adjuster) applied
to crops and raw agricultural
commodities pre- and post-harvest,
limited to no more than 10% by weight
in the pesticide formulation.
Technology Sciences Group, Inc. on
behalf of Organisan Corporation,
submitted a petition to EPA under the
Federal Food, Drug, and Cosmetic Act
(FFDCA), requesting establishment of an
exemption from the requirement of a
tolerance. This regulation eliminates the
need to establish a maximum
permissible level for residues of nitric
acid when used in accordance with the
terms of the exemption.
DATES: This regulation is effective
November 8, 2022. Objections and
requests for hearings must be received
on or before January 9, 2023, and must
be filed in accordance with the
instructions provided in 40 CFR part
178 (see also Unit I.C. of the
SUPPLEMENTARY INFORMATION).
ADDRESSES: The docket for this action,
identified by docket identification (ID)
number EPA–HQ–OPP–2022–0363, is
available at https://www.regulations.gov
or at the Office of Pesticide Programs
Regulatory Public Docket (OPP Docket)
in the Environmental Protection Agency
Docket Center (EPA/DC), West William
Jefferson Clinton Bldg., Rm. 3334, 1301
Constitution Ave. NW, Washington, DC
20460–0001. The Public Reading Room
is open from 8:30 a.m. to 4:30 p.m.,
Monday through Friday, excluding legal
holidays. The telephone number for the
Public Reading Room and OPP Docket
is (202) 566–1744. For the latest status
information on EPA/DC services, docket
access, visit https://www.epa.gov/
dockets.
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SUMMARY:
FOR FURTHER INFORMATION CONTACT:
Daniel Rosenblatt, Registration Division
(7505T), Office of Pesticide Programs,
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You may be potentially affected by
this action if you are an agricultural
producer, food manufacturer, or
pesticide manufacturer. The following
list of North American Industrial
Classification System (NAICS) codes is
not intended to be exhaustive, but rather
provides a guide to help readers
determine whether this document
applies to them. Potentially affected
entities may include:
• Crop production (NAICS code 111).
• Animal production (NAICS code
112).
• Food manufacturing (NAICS code
311).
• Pesticide manufacturing (NAICS
code 32532).
B. How can I get electronic access to
other related information?
You may access a frequently updated
electronic version of 40 CFR part 180
through the Office of the Federal
Register’s e-CFR site at https://
www.ecfr.gov/current/title-40.
C. How can I file an objection or hearing
request?
Under FFDCA section 408(g), 21
U.S.C. 346a(g), any person may file an
objection to any aspect of this regulation
and may also request a hearing on those
objections. You must file your objection
or request a hearing on this regulation
in accordance with the instructions
provided in 40 CFR part 178. To ensure
proper receipt by EPA, you must
identify docket ID number EPA–HQ–
OPP–2022–0363 in the subject line on
the first page of your submission. All
objections and requests for a hearing
must be in writing, and must be
received by the Hearing Clerk on or
before January 9, 2023. Addresses for
mail and hand delivery of objections
and hearing requests are provided in 40
CFR 178.25(b), although the Office of
the Administrative Law Judges, which
houses the Hearing Clerk, encourages
parties to file objections and hearing
requests electronically. See https://
www.epa.gov/sites/default/files/202005/documents/2020-04-10_-_order_
urging_electronic_service_and_
filing.pdf.
In addition to filing an objection or
hearing request with the Hearing Clerk
as described in 40 CFR part 178, please
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67375
submit a copy of the filing (excluding
any Confidential Business Information
(CBI)) for inclusion in the public docket.
Information not marked confidential
pursuant to 40 CFR part 2 may be
disclosed publicly by EPA without prior
notice. Submit the non-CBI copy of your
objection or hearing request, identified
by docket ID number EPA–HQ–OPP–
2022–0363, by one of the following
methods:
• Federal eRulemaking Portal:
https://www.regulations.gov. Follow the
online instructions for submitting
comments. Do not submit electronically
any information you consider to be CBI
or other information whose disclosure is
restricted by statute.
• Mail: OPP Docket, Environmental
Protection Agency Docket Center (EPA/
DC), (28221T), 1200 Pennsylvania Ave.
NW, Washington, DC 20460–0001.
• Hand Delivery: To make special
arrangements for hand delivery or
delivery of boxed information, please
follow the instructions at https://
www.epa.gov/dockets.
Additional instructions on
commenting or visiting the docket,
along with more information about
dockets generally, is available at https://
www.epa.gov/dockets.
II. Petition for Exemption
In the Federal Register of June 22,
2022 (87 FR 37287) (FRL–9410–02),
EPA issued a document pursuant to
FFDCA section 408, 21 U.S.C. 346a,
announcing the filing of a pesticide
petition (PP IN–11643) by Technology
Sciences Group, Inc., 1150 18th Street
NW, Suite 1000 Washington, DC 20036
on behalf of Organisan Corporation, P.O.
Box 2085, Carrollton, GA 30112. The
petition requested that 40 CFR be
amended by establishing an exemption
from the requirement of a tolerance for
residues of nitric acid (CAS Reg. No.
7697–37–2) when used as an inert
ingredient (pH adjuster) in pesticide
formulations applied to crops and raw
agricultural commodities pre- and postharvest, limited to no more than 10% by
weight in the pesticide formulation
under 40 CFR 180.910. That document
referenced a summary of the petition
prepared by Technology Sciences
Group, Inc. on behalf of Organisan
Corporation, the petitioner, which is
available in the docket, https://
www.regulations.gov. There were no
comments received in response to the
notice of filing.
III. Inert Ingredient Definition
Inert ingredients are all ingredients
that are not active ingredients as defined
in 40 CFR 153.125 and include, but are
not limited to, the following types of
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ingredients (except when they have a
pesticidal efficacy of their own):
solvents such as alcohols and
hydrocarbons; surfactants such as
polyoxyethylene polymers and fatty
acids; carriers such as clay and
diatomaceous earth; thickeners such as
carrageenan and modified cellulose;
wetting, spreading, and dispersing
agents; propellants in aerosol
dispensers; microencapsulating agents;
and emulsifiers. The term ‘‘inert’’ is not
intended to imply nontoxicity; the
ingredient may or may not be
chemically active. Generally, EPA has
exempted inert ingredients from the
requirement of a tolerance based on the
low toxicity of the individual inert
ingredients.
IV. Aggregate Risk Assessment and
Determination of Safety
Section 408(c)(2)(A)(i) of FFDCA
allows EPA to establish an exemption
from the requirement for a tolerance (the
legal limit for a pesticide chemical
residue in or on a food) only if EPA
determines that the tolerance is ‘‘safe.’’
Section 408(c)(2)(A)(ii) of FFDCA
defines ‘‘safe’’ to mean that ‘‘there is a
reasonable certainty that no harm will
result from aggregate exposure to the
pesticide chemical residue, including
all anticipated dietary exposures and all
other exposures for which there is
reliable information.’’ This includes
exposure through drinking water and in
residential settings but does not include
occupational exposure. Section
408(b)(2)(C) of FFDCA requires EPA to
give special consideration to exposure
of infants and children to the pesticide
chemical residue in establishing a
tolerance or exemption and to ‘‘ensure
that there is a reasonable certainty that
no harm will result to infants and
children from aggregate exposure to the
pesticide chemical residue . . . .’’
EPA establishes exemptions from the
requirement of a tolerance only in those
cases where it can be clearly
demonstrated that the risks from
aggregate exposure to pesticide
chemical residues under reasonably
foreseeable circumstances will pose no
harm to human health. In order to
determine the risks from aggregate
exposure to pesticide inert ingredients,
the Agency considers the toxicity of the
inert in conjunction with possible
exposure to residues of the inert
ingredient through food, drinking water,
and through other exposures that occur
as a result of pesticide use in residential
settings. If EPA is able to determine that
a tolerance is not necessary to ensure
that there is a reasonable certainty that
no harm will result from aggregate
exposure to the inert ingredient, an
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exemption from the requirement of a
tolerance may be established.
Consistent with FFDCA section
408(c)(2)(A), and the factors specified in
FFDCA section 408(c)(2)(B), EPA has
reviewed the available scientific data
and other relevant information in
support of this action. EPA has
sufficient data to assess the hazards of
and to make a determination on
aggregate exposure to nitric acid,
including exposure resulting from the
exemption established by this action.
EPA’s assessment of exposures and risks
associated with nitric acid follows.
A. Toxicological Profile
EPA has evaluated the available
toxicity data and considered their
validity, completeness, and reliability as
well as the relationship of the results of
the studies to human risk. EPA has also
considered available information
concerning the variability of the
sensitivities of major identifiable
subgroups of consumers, including
infants and children. Specific
information on the studies received and
the nature of the adverse effects caused
by nitric acid as well as the noobserved-adverse-effect-level (NOAEL)
and the lowest-observed-adverse-effectlevel (LOAEL) from the toxicity studies
are discussed in this unit.
Nitric acid is a highly corrosive
inorganic acid. In a concentrated form,
nitric acid is corrosive at the site of
contact and does not elicit systemic
toxicity. There is limited acute and no
repeated dose studies on the toxicity of
dilute forms of nitric acid following oral
exposure. However, the toxicity of
dilute nitric acid is expected to result
from the formation of nitrate. Sodium
nitrate is a water soluble inorganic salt
that readily dissociates into sodium and
the nitrate anion (NO3¥). Therefore,
toxicity data on sodium nitrate were
used to characterize toxicity due to
exposure to nitric acid.
The acute inhalation toxicity of nitric
acid is low at concentrations ≤70%. The
lethal concentration is greater than 2.65
milligrams/liter (mg/L) in acute
inhalation studies with nitric acid.
Based on acute toxicity data on sodium
nitrate, nitric acid is expected to have
low oral acute toxicity. No acute data
are available on the dermal route of
exposure, eye and dermal irritation, and
skin sensitization potential of nitric acid
due to its corrosive nature at high
concentrations.
Several repeated dose studies were
available for sodium nitrate. In a 6-week
oral toxicity study in rats, sodium
nitrate was administered in the diet.
The only effect observed was decreased
body weight gain at 2,500 milligrams/
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kilogram/day (mg/kg/day), which is not
considered adverse. There were no
increased incidences in tumor formation
in multiple carcinogenicity studies in
rats and mice up to the highest dose
tested (5,000 mg/kg/day in mice and
2,500 mg/kg/day in rats). Also, there
were no treatment related maternal,
reproductive or developmental effects
observed in multiple reproduction and
developmental toxicity studies in rats,
mice, hamsters, and rabbits up to the
highest doses tested (41 mg/kg/day in
mice and hamsters and 66 mg/kg/day in
rats and rabbits).
There were several human
epidemiological data available for
review. In these studies, sodium nitrate
concentrations were evaluated in water
sources for reported cases of children
with cyanosis due to
methemoglobinemia. Overall, studies
found that wells used to supply water
to children with cyanosis due to
methemoglobinemia contained nitrate
levels >1.8 mg/kg/day.
Methemoglobinemia was not observed
in infants consuming water containing
less than 1.6 mg/kg/day of sodium
nitrate.
B. Toxicological Points of Departure/
Levels of Concern
Once a pesticide’s toxicological
profile is determined, EPA identifies
toxicological points of departure (POD)
and levels of concern to use in
evaluating the risk posed by human
exposure to the pesticide. For hazards
that have a threshold below which there
is no appreciable risk, the toxicological
POD is used as the basis for derivation
of reference values for risk assessment.
PODs are developed based on a careful
analysis of the doses in each
toxicological study to determine the
dose at which no adverse effects are
observed (the NOAEL) and the lowest
dose at which adverse effects of concern
are identified (the LOAEL). Uncertainty/
safety factors are used in conjunction
with the POD to calculate a safe
exposure level—generally referred to as
a population-adjusted dose (PAD) or a
reference dose (RfD)—and a safe margin
of exposure (MOE). For non-threshold
risks, the Agency assumes that any
amount of exposure will lead to some
degree of risk. Thus, the Agency
estimates risk in terms of the probability
of an occurrence of the adverse effect
expected in a lifetime. For more
information on the general principles
EPA uses in risk characterization and a
complete description of the risk
assessment process, see https://
www.epa.gov/pesticide-science-andassessing-pesticide-risks/overview-riskassessment-pesticide-program.
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There were no effects that could be
attributed to a single dose in the
database. Therefore, an acute oral POD
was not selected. Chronic dietary,
incidental oral, dermal and inhalation
short- and intermediate-term exposures
were based on the POD of 1.6 mg/kg/
day, based on the concentration of
sodium nitrate (1.6 mg/kg/day) in water
at which methemoglobinemia was not
observed in infants.
C. Exposure Assessment
1. Dietary exposure from food and
feed uses. In evaluating dietary
exposure to nitric acid, EPA considered
exposure that may occur from the
existing and proposed uses of nitric
acid. EPA assessed dietary exposures
from nitric acid in food as follows:
No adverse effects attributable to a
single dietary exposure of nitric acid
were seen in the toxicity databases.
Therefore, an acute dietary risk
assessment is not necessary.
In conducting the chronic dietary
exposure assessment using the Dietary
Exposure Evaluation Model DEEM–
FCIDTM, Version 4.02, EPA used food
consumption information from the U.S.
Department of Agriculture’s (USDA’s)
2005–2010 National Health and
Nutrition Examination Survey, What We
Eat in America (NHANES/WWEIA). As
to residue levels in food, no residue data
were submitted for nitric acid. In the
absence of specific residue data, EPA
has developed an approach which uses
surrogate information to derive upper
bound exposure estimates for the
subject inert ingredient. Upper bound
exposure estimates are based on the
highest tolerance for a given commodity
from a list of high use insecticides,
herbicides, and fungicides. A complete
description of the general approach
taken to assess inert ingredient risks in
the absence of residue data is contained
in the memorandum entitled ‘‘Update to
D361707: Dietary Exposure and Risk
Assessments for the Inerts.’’ (12/21/
2021) and can be found at https://
www.regulations.gov in docket ID
number EPA–HQ–OPP–2018–0090.
In the dietary exposure assessment,
the Agency assumed that the residue
level of the inert ingredient would be no
higher than the highest tolerance for a
given commodity. Implicit in this
assumption is that there would be
similar rates of degradation (if any)
between the active and inert ingredient
and that the concentration of inert
ingredient in the scenarios leading to
these highest levels of tolerances would
be no higher than the concentration of
the active ingredient.
The Agency believes the assumptions
used to estimate dietary exposures lead
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to an extremely conservative assessment
of dietary risk due to a series of
compounded conservatisms.
First, assuming that the level of
residue for an inert ingredient is equal
to the level of residue for the active
ingredient will overstate exposure. The
concentrations of active ingredient in
agricultural products are generally at
least 50 percent of the product and often
can be much higher. Further, pesticide
products rarely have a single inert
ingredient; rather there is generally a
combination of different inert
ingredients used which additionally
reduces the concentration of any single
inert ingredient in the pesticide product
in relation to that of the active
ingredient.
Second, the conservatism of this
methodology is compounded by EPA’s
decision to assume that, for each
commodity, the active ingredient which
will serve as a guide to the potential
level of inert ingredient residues is the
active ingredient with the highest
tolerance level. This assumption
overstates residue values because it
would be highly unlikely, given the
high number of inert ingredients, that a
single inert ingredient or class of
ingredients would be present at the
level of the active ingredient in the
highest tolerance for every commodity.
Finally, a third compounding
conservatism is EPA’s assumption that
all foods contain the inert ingredient at
the highest tolerance level. In other
words, EPA assumed 100 percent of all
foods are treated with the inert
ingredient at the rate and manner
necessary to produce the highest residue
legally possible for an active ingredient.
In summary, EPA chose a very
conservative method for estimating
what level of inert residue could be on
food, then used this methodology to
choose the highest possible residue that
could be found on food and assumed
that all food contained this residue. No
consideration was given to potential
degradation between harvest and
consumption even though monitoring
data shows that tolerance level residues
are typically one to two orders of
magnitude higher than actual residues
in food when distributed in commerce.
Accordingly, although sufficient
information to quantify actual residue
levels in food is not available, the
compounding of these conservative
assumptions will lead to a significant
exaggeration of actual exposures. EPA
does not believe that this approach
underestimates exposure in the absence
of residue data. EPA did assume that
nitric acid will be limited to 10% in
pesticide non-residential formulations
that will be applied to crops and raw
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agricultural commodities pre- and postharvest.
2. Dietary exposure from drinking
water. For the purpose of the screening
level dietary risk assessment to support
this request for an exemption from the
requirement of a tolerance for nitric
acid, a conservative drinking water
concentration value of 100 ppb based on
screening level modeling was used to
assess the contribution to drinking
water for the chronic dietary risk
assessments for parent compound.
These values were directly entered into
the dietary exposure model.
3. From non-dietary exposure. The
term ‘‘residential exposure’’ is used in
this document to refer to nonoccupational, non-dietary exposure
(e.g., textiles (clothing and diapers),
carpets, swimming pools, for lawn and
garden pest control, indoor pest control,
termiticides, flea and tick control on
pets and hard surface disinfection on
walls, floors, tables).
Short-term residential exposure for
adults combines high end dermal and
inhalation handler exposure from
indoor hard surface, aerosol sprays with
a high-end post application dermal
exposure from contact with treated
lawns and results in an MOE of 6.2.
Short-term residential exposure for
children includes total exposures
associated with contact with treated
lawns (dermal and hand-to-mouth
exposures) and results in an MOE of 20.
Intermediate-term residential
exposure for adults includes high-end
post application dermal exposure from
contact with treated lawns and results
in an MOE of 148. Intermediate-term
residential exposure for children
includes total exposures associated with
contact with treated lawns (dermal and
hand-to-mouth exposures) and result in
an MOE of 11.
Because EPA’s level of concern for
nitric acid is an MOE below 1 these
MOEs are not of concern.
4. Cumulative effects from substances
with a common mechanism of toxicity.
Section 408(b)(2)(D)(v) of FFDCA
requires that, when considering whether
to establish, modify, or revoke a
tolerance, the Agency consider
‘‘available information’’ concerning the
cumulative effects of a particular
pesticide’s residues and ‘‘other
substances that have a common
mechanism of toxicity.’’
EPA has not found nitric acid to share
a common mechanism of toxicity with
any other substances, and nitric acid
does not appear to produce a toxic
metabolite produced by other
substances. For the purposes of this
tolerance action, therefore, EPA has
assumed that nitric acid does not have
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a common mechanism of toxicity with
other substances. For information
regarding EPA’s efforts to determine
which chemicals have a common
mechanism of toxicity and to evaluate
the cumulative effects of such
chemicals, see EPA’s website at https://
www.epa.gov/pesticide-science-andassessing-pesticide-risks/cumulativeassessment-risk-pesticides.
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D. Safety Factor for Infants and
Children
In general. Section 408(b)(2)(C) of
FFDCA provides that EPA shall apply
an additional tenfold (10X) margin of
safety for infants and children in the
case of threshold effects to account for
prenatal and postnatal toxicity and the
completeness of the database on toxicity
and exposure unless EPA determines
based on reliable data that a different
margin of safety will be safe for infants
and children. This additional margin of
safety is commonly referred to as the
Food Quality Protection Act (FQPA)
Safety Factor (SF). In applying this
provision, EPA either retains the default
value of 10X, or uses a different
additional safety factor when reliable
data available to EPA support the choice
of a different factor.
The Agency has concluded that there
is reliable data to determine that infants
and children will be safe if the FQPA SF
of 10x is reduced to 1X for the chronic
dietary assessment for the following
reasons. The toxicity database for nitric
acid is adequate as it is based on the use
of sodium nitrate data for which there
is a robust toxicity database. The
NOAEL used for risk assessment was
derived from the critical toxic effect in
the most sensitive human
subpopulation (infants ages 8 days to 5
months). There is no indication of
immunotoxicity or neurotoxicity in the
available studies. Additionally, no
offspring susceptibility or reproduction
toxicity was observed in the available
studies. Based on the adequacy of the
toxicity database, the conservative
nature of the exposure assessment and
the lack of concern for prenatal and
postnatal sensitivity, the Agency has
concluded that there is reliable data to
determine that infants and children will
be safe if the FQPA SF of 10X is reduced
to 1X.
E. Aggregate Risks and Determination of
Safety
EPA determines whether acute and
chronic dietary pesticide exposures are
safe by comparing aggregate exposure
estimates to the acute PAD (aPAD) and
chronic PAD (cPAD). For linear cancer
risks, EPA calculates the lifetime
probability of acquiring cancer given the
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estimated aggregate exposure. Short-,
intermediate-, and chronic-term risks
are evaluated by comparing the
estimated aggregate food, water, and
residential exposure to the appropriate
PODs to ensure that an adequate MOE
exists.
1. Acute risk. An acute aggregate risk
assessment takes into account acute
exposure estimates from dietary
consumption of food and drinking
water. No adverse effect resulting from
a single oral exposure was identified
and no acute dietary endpoint was
selected. Therefore, nitric acid is not
expected to pose an acute risk.
2. Chronic risk. A chronic aggregate
risk assessment takes into account
chronic exposure estimates from dietary
consumption of food and drinking
water. Using the exposure assumptions
described in this unit for chronic
exposure, EPA has concluded that
chronic exposure to nitric acid from
food and water will utilize 37% of the
cPAD for children 1 to 2 years old, the
population group receiving the greatest
exposure.
3. Short-term risk. Short-term
aggregate exposure takes into account
short-term residential exposure plus
chronic exposure to food and water
(considered to be a background
exposure level).
Nitric acid may be used as an inert
ingredient in pesticide products that are
registered for uses that could result in
short-term residential exposure, and the
Agency has determined that it is
appropriate to aggregate chronic
exposure through food and water with
short-term residential exposures to
nitric acid.
Using the exposure assumptions
described in this unit for short-term
exposures, EPA concluded that the
combined short-term aggregated food,
water, and residential pesticide
exposures result in MOEs of 4 for
adults. Adult residential exposure
combines high end dermal and
inhalation handler exposure from
liquids/trigger sprayer/home garden
with a high-end post application dermal
exposure from contact with treated
lawns. EPA has concluded the
combined short-term aggregated food,
water, and residential pesticide
exposures result in an aggregate MOE of
2 for children. Children’s residential
exposure includes total exposures
associated with contact with treated
lawns (dermal and hand-to-mouth
exposures). Because EPA’s level of
concern for nitric acid is an MOE below
1, these MOEs are not of concern.
4. Intermediate-term risk.
Intermediate-term aggregate exposure
takes into account intermediate-term
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residential exposure plus chronic
exposure to food and water (considered
to be a background exposure level).
Nitric acid may be used as an inert
ingredient in pesticide products that are
registered for uses that could result in
intermediate-term residential exposure,
and the Agency has determined that it
is appropriate to aggregate chronic
exposure through food and water with
intermediate-term residential exposures
to nitric acid.
Using the exposure assumptions
described in this unit for intermediateterm exposures, EPA has concluded that
the intermediate-term aggregated food,
water, and residential exposures result
in aggregate MOEs of 10 for adults.
Adult residential exposure includes
high end post application dermal
exposure from contact with treated
lawns. EPA has concluded the
combined intermediate-term aggregated
food, water, and residential exposures
result in an aggregate MOE of 2 for
children. Children’s residential
exposure includes total exposures
associated with contact with treated
lawns (dermal and hand-to-mouth
exposures). Because EPA’s level of
concern for nitric acid is an MOE below
1, these MOEs are not of concern.
5. Aggregate cancer risk for U.S.
population. Based on the lack of
evidence of carcinogenicity in adequate
rodent carcinogenicity studies, nitric
acid is not expected to pose a cancer
risk to humans.
6. Determination of safety. Based on
these risk assessments, EPA concludes
that there is a reasonable certainty that
no harm will result to the general
population, or to infants and children
from aggregate exposure to nitric acid
residues.
V. Other Considerations
Analytical Enforcement Methodology
An analytical method is not required
for enforcement purposes since the
Agency is not establishing a numerical
tolerance for residues of nitric acid in or
on any food commodities. EPA is
establishing a limitation on the amount
of nitric acid that may be used in
pesticide formulations. This limitation
will be enforced through the pesticide
registration process under the Federal
Insecticide, Fungicide, and Rodenticide
Act (‘‘FIFRA’’), 7 U.S.C. 136 et seq. EPA
will not register any pesticide
formulation for food use that exceeds
10% nitric acid in the final pesticide
formulations.
VI. Conclusions
Therefore, an exemption from the
requirement of a tolerance is established
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Federal Register / Vol. 87, No. 215 / Tuesday, November 8, 2022 / Rules and Regulations
for residues of nitric acid (CAS Reg. No.
7697–37–2) when used as an inert
ingredient (pH adjuster) in pesticide
formulations applied to crops and raw
agricultural commodities pre- and postharvest under 40 CFR 180.910, limited
to no more than 10% by weight in the
pesticide formulation.
VII. Statutory and Executive Order
Reviews
This action establishes a tolerance
exemption under FFDCA section 408(d)
in response to a petition submitted to
the Agency. The Office of Management
and Budget (OMB) has exempted these
types of actions from review under
Executive Order 12866, entitled
‘‘Regulatory Planning and Review’’ (58
FR 51735, October 4, 1993). Because
this action has been exempted from
review under Executive Order 12866,
this action is not subject to Executive
Order 13211, entitled ‘‘Actions
Concerning Regulations That
Significantly Affect Energy Supply,
Distribution, or Use’’ (66 FR 28355, May
22, 2001) or Executive Order 13045,
entitled ‘‘Protection of Children from
Environmental Health Risks and Safety
Risks’’ (62 FR 19885, April 23, 1997).
This action does not contain any
information collections subject to OMB
approval under the Paperwork
Reduction Act (PRA) (44 U.S.C. 3501 et
seq.), nor does it require any special
considerations under Executive Order
12898, entitled ‘‘Federal Actions to
Address Environmental Justice in
Minority Populations and Low-Income
Populations’’ (59 FR 7629, February 16,
1994).
Since tolerances and exemptions that
are established on the basis of a petition
under FFDCA section 408(d), such as
the tolerance exemption in this final
rule, do not require the issuance of a
proposed rule, the requirements of the
Regulatory Flexibility Act (RFA) (5
U.S.C. 601 et seq.), do not apply.
This action directly regulates growers,
food processors, food handlers, and food
retailers, not States or tribes, nor does
this action alter the relationships or
distribution of power and
responsibilities established by Congress
in the preemption provisions of FFDCA
section 408(n)(4). As such, the Agency
has determined that this action will not
have a substantial direct effect on States
or Tribal Governments, on the
relationship between the National
Government and the States or Tribal
Governments, or on the distribution of
power and responsibilities among the
various levels of government or between
the Federal Government and Indian
Tribes. Thus, the Agency has
determined that Executive Order 13132,
entitled ‘‘Federalism’’ (64 FR 43255,
August 10, 1999) and Executive Order
13175, entitled ‘‘Consultation and
Coordination with Indian Tribal
Governments’’ (65 FR 67249, November
9, 2000) do not apply to this action. In
addition, this action does not impose
any enforceable duty or contain any
unfunded mandate as described under
Title II of the Unfunded Mandates
Reform Act (UMRA) (2 U.S.C. 1501 et
seq.).
This action does not involve any
technical standards that would require
Agency consideration of voluntary
consensus standards pursuant to section
12(d) of the National Technology
Transfer and Advancement Act
(NTTAA) (15 U.S.C. 272 note).
VIII. Congressional Review Act
Pursuant to the Congressional Review
Act (5 U.S.C. 801 et seq.), EPA will
submit a report containing this rule and
other required information to the U.S.
Senate, the U.S. House of
Representatives, and the Comptroller
General of the United States prior to
publication of the rule in the Federal
Register. This action is not a ‘‘major
rule’’ as defined by 5 U.S.C. 804(2).
List of Subjects in 40 CFR Part 180
Environmental protection,
Administrative practice and procedure,
Agricultural commodities, Pesticides
and pests, Reporting and recordkeeping
requirements.
Dated: October 31, 2022.
Jennifer Saunders,
Acting Director, Registration Division, Office
of Pesticide Programs.
Therefore, for the reasons stated in the
preamble, EPA is amending 40 CFR
chapter I as follows:
PART 180—TOLERANCES AND
EXEMPTIONS FOR PESTICIDE
CHEMICAL RESIDUES IN FOOD
1. The authority citation for part 180
continues to read as follows:
■
Authority: 21 U.S.C. 321(q), 346a and 371.
2. In § 180.910, amend table 1 by
adding, in alphabetical order the inert
ingredient ‘‘Nitric acid (CAS Reg. No.
7697–37–2)’’ to read as follows:
■
§ 180.910 Inert ingredients used pre- and
post-harvest; exemptions from the
requirement of a tolerance.
*
*
*
*
*
TABLE 1 TO 180.910
Inert ingredients
Limits
*
*
*
Nitric acid (CAS Reg. No. 7697–37–2) ..................................
*
*
*
10% by weight in pesticide formulation .................................
*
*
*
*
Uses
*
*
[FR Doc. 2022–23978 Filed 11–7–22; 8:45 am]
lotter on DSK11XQN23PROD with RULES1
BILLING CODE 6560–50–P
VerDate Sep<11>2014
16:02 Nov 07, 2022
Jkt 259001
PO 00000
Frm 00029
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*
pH adjuster.
*
Agencies
[Federal Register Volume 87, Number 215 (Tuesday, November 8, 2022)]
[Rules and Regulations]
[Pages 67375-67379]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2022-23978]
-----------------------------------------------------------------------
ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 180
[EPA-HQ-OPP-2022-0363; FRL-10247-01-OCSPP]
Nitric Acid; Exemption From the Requirement of a Tolerance
AGENCY: Environmental Protection Agency (EPA).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: This regulation establishes an exemption from the requirement
of a tolerance for residues of nitric acid (CAS Reg. No. 7697-37-2)
when used as an inert ingredient (pH adjuster) applied to crops and raw
agricultural commodities pre- and post-harvest, limited to no more than
10% by weight in the pesticide formulation. Technology Sciences Group,
Inc. on behalf of Organisan Corporation, submitted a petition to EPA
under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting
establishment of an exemption from the requirement of a tolerance. This
regulation eliminates the need to establish a maximum permissible level
for residues of nitric acid when used in accordance with the terms of
the exemption.
DATES: This regulation is effective November 8, 2022. Objections and
requests for hearings must be received on or before January 9, 2023,
and must be filed in accordance with the instructions provided in 40
CFR part 178 (see also Unit I.C. of the SUPPLEMENTARY INFORMATION).
ADDRESSES: The docket for this action, identified by docket
identification (ID) number EPA-HQ-OPP-2022-0363, is available at
https://www.regulations.gov or at the Office of Pesticide Programs
Regulatory Public Docket (OPP Docket) in the Environmental Protection
Agency Docket Center (EPA/DC), West William Jefferson Clinton Bldg.,
Rm. 3334, 1301 Constitution Ave. NW, Washington, DC 20460-0001. The
Public Reading Room is open from 8:30 a.m. to 4:30 p.m., Monday through
Friday, excluding legal holidays. The telephone number for the Public
Reading Room and OPP Docket is (202) 566-1744. For the latest status
information on EPA/DC services, docket access, visit https://www.epa.gov/dockets.
FOR FURTHER INFORMATION CONTACT: Daniel Rosenblatt, Registration
Division (7505T), Office of Pesticide Programs, Environmental
Protection Agency, 1200 Pennsylvania Ave. NW, Washington, DC 20460-
0001; main telephone number: (202) 566-1030; email address:
[email protected].
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.
The following list of North American Industrial Classification System
(NAICS) codes is not intended to be exhaustive, but rather provides a
guide to help readers determine whether this document applies to them.
Potentially affected entities may include:
Crop production (NAICS code 111).
Animal production (NAICS code 112).
Food manufacturing (NAICS code 311).
Pesticide manufacturing (NAICS code 32532).
B. How can I get electronic access to other related information?
You may access a frequently updated electronic version of 40 CFR
part 180 through the Office of the Federal Register's e-CFR site at
https://www.ecfr.gov/current/title-40.
C. How can I file an objection or hearing request?
Under FFDCA section 408(g), 21 U.S.C. 346a(g), any person may file
an objection to any aspect of this regulation and may also request a
hearing on those objections. You must file your objection or request a
hearing on this regulation in accordance with the instructions provided
in 40 CFR part 178. To ensure proper receipt by EPA, you must identify
docket ID number EPA-HQ-OPP-2022-0363 in the subject line on the first
page of your submission. All objections and requests for a hearing must
be in writing, and must be received by the Hearing Clerk on or before
January 9, 2023. Addresses for mail and hand delivery of objections and
hearing requests are provided in 40 CFR 178.25(b), although the Office
of the Administrative Law Judges, which houses the Hearing Clerk,
encourages parties to file objections and hearing requests
electronically. See https://www.epa.gov/sites/default/files/2020-05/documents/2020-04-10_-_order_urging_electronic_service_and_filing.pdf.
In addition to filing an objection or hearing request with the
Hearing Clerk as described in 40 CFR part 178, please submit a copy of
the filing (excluding any Confidential Business Information (CBI)) for
inclusion in the public docket. Information not marked confidential
pursuant to 40 CFR part 2 may be disclosed publicly by EPA without
prior notice. Submit the non-CBI copy of your objection or hearing
request, identified by docket ID number EPA-HQ-OPP-2022-0363, by one of
the following methods:
Federal eRulemaking Portal: https://www.regulations.gov.
Follow the online instructions for submitting comments. Do not submit
electronically any information you consider to be CBI or other
information whose disclosure is restricted by statute.
Mail: OPP Docket, Environmental Protection Agency Docket
Center (EPA/DC), (28221T), 1200 Pennsylvania Ave. NW, Washington, DC
20460-0001.
Hand Delivery: To make special arrangements for hand
delivery or delivery of boxed information, please follow the
instructions at https://www.epa.gov/dockets.
Additional instructions on commenting or visiting the docket, along
with more information about dockets generally, is available at https://www.epa.gov/dockets.
II. Petition for Exemption
In the Federal Register of June 22, 2022 (87 FR 37287) (FRL-9410-
02), EPA issued a document pursuant to FFDCA section 408, 21 U.S.C.
346a, announcing the filing of a pesticide petition (PP IN-11643) by
Technology Sciences Group, Inc., 1150 18th Street NW, Suite 1000
Washington, DC 20036 on behalf of Organisan Corporation, P.O. Box 2085,
Carrollton, GA 30112. The petition requested that 40 CFR be amended by
establishing an exemption from the requirement of a tolerance for
residues of nitric acid (CAS Reg. No. 7697-37-2) when used as an inert
ingredient (pH adjuster) in pesticide formulations applied to crops and
raw agricultural commodities pre- and post-harvest, limited to no more
than 10% by weight in the pesticide formulation under 40 CFR 180.910.
That document referenced a summary of the petition prepared by
Technology Sciences Group, Inc. on behalf of Organisan Corporation, the
petitioner, which is available in the docket, https://www.regulations.gov. There were no comments received in response to the
notice of filing.
III. Inert Ingredient Definition
Inert ingredients are all ingredients that are not active
ingredients as defined in 40 CFR 153.125 and include, but are not
limited to, the following types of
[[Page 67376]]
ingredients (except when they have a pesticidal efficacy of their own):
solvents such as alcohols and hydrocarbons; surfactants such as
polyoxyethylene polymers and fatty acids; carriers such as clay and
diatomaceous earth; thickeners such as carrageenan and modified
cellulose; wetting, spreading, and dispersing agents; propellants in
aerosol dispensers; microencapsulating agents; and emulsifiers. The
term ``inert'' is not intended to imply nontoxicity; the ingredient may
or may not be chemically active. Generally, EPA has exempted inert
ingredients from the requirement of a tolerance based on the low
toxicity of the individual inert ingredients.
IV. Aggregate Risk Assessment and Determination of Safety
Section 408(c)(2)(A)(i) of FFDCA allows EPA to establish an
exemption from the requirement for a tolerance (the legal limit for a
pesticide chemical residue in or on a food) only if EPA determines that
the tolerance is ``safe.'' Section 408(c)(2)(A)(ii) of FFDCA defines
``safe'' to mean that ``there is a reasonable certainty that no harm
will result from aggregate exposure to the pesticide chemical residue,
including all anticipated dietary exposures and all other exposures for
which there is reliable information.'' This includes exposure through
drinking water and in residential settings but does not include
occupational exposure. Section 408(b)(2)(C) of FFDCA requires EPA to
give special consideration to exposure of infants and children to the
pesticide chemical residue in establishing a tolerance or exemption and
to ``ensure that there is a reasonable certainty that no harm will
result to infants and children from aggregate exposure to the pesticide
chemical residue . . . .''
EPA establishes exemptions from the requirement of a tolerance only
in those cases where it can be clearly demonstrated that the risks from
aggregate exposure to pesticide chemical residues under reasonably
foreseeable circumstances will pose no harm to human health. In order
to determine the risks from aggregate exposure to pesticide inert
ingredients, the Agency considers the toxicity of the inert in
conjunction with possible exposure to residues of the inert ingredient
through food, drinking water, and through other exposures that occur as
a result of pesticide use in residential settings. If EPA is able to
determine that a tolerance is not necessary to ensure that there is a
reasonable certainty that no harm will result from aggregate exposure
to the inert ingredient, an exemption from the requirement of a
tolerance may be established.
Consistent with FFDCA section 408(c)(2)(A), and the factors
specified in FFDCA section 408(c)(2)(B), EPA has reviewed the available
scientific data and other relevant information in support of this
action. EPA has sufficient data to assess the hazards of and to make a
determination on aggregate exposure to nitric acid, including exposure
resulting from the exemption established by this action. EPA's
assessment of exposures and risks associated with nitric acid follows.
A. Toxicological Profile
EPA has evaluated the available toxicity data and considered their
validity, completeness, and reliability as well as the relationship of
the results of the studies to human risk. EPA has also considered
available information concerning the variability of the sensitivities
of major identifiable subgroups of consumers, including infants and
children. Specific information on the studies received and the nature
of the adverse effects caused by nitric acid as well as the no-
observed-adverse-effect-level (NOAEL) and the lowest-observed-adverse-
effect-level (LOAEL) from the toxicity studies are discussed in this
unit.
Nitric acid is a highly corrosive inorganic acid. In a concentrated
form, nitric acid is corrosive at the site of contact and does not
elicit systemic toxicity. There is limited acute and no repeated dose
studies on the toxicity of dilute forms of nitric acid following oral
exposure. However, the toxicity of dilute nitric acid is expected to
result from the formation of nitrate. Sodium nitrate is a water soluble
inorganic salt that readily dissociates into sodium and the nitrate
anion (NO3-). Therefore, toxicity data on sodium
nitrate were used to characterize toxicity due to exposure to nitric
acid.
The acute inhalation toxicity of nitric acid is low at
concentrations <=70%. The lethal concentration is greater than 2.65
milligrams/liter (mg/L) in acute inhalation studies with nitric acid.
Based on acute toxicity data on sodium nitrate, nitric acid is expected
to have low oral acute toxicity. No acute data are available on the
dermal route of exposure, eye and dermal irritation, and skin
sensitization potential of nitric acid due to its corrosive nature at
high concentrations.
Several repeated dose studies were available for sodium nitrate. In
a 6-week oral toxicity study in rats, sodium nitrate was administered
in the diet. The only effect observed was decreased body weight gain at
2,500 milligrams/kilogram/day (mg/kg/day), which is not considered
adverse. There were no increased incidences in tumor formation in
multiple carcinogenicity studies in rats and mice up to the highest
dose tested (5,000 mg/kg/day in mice and 2,500 mg/kg/day in rats).
Also, there were no treatment related maternal, reproductive or
developmental effects observed in multiple reproduction and
developmental toxicity studies in rats, mice, hamsters, and rabbits up
to the highest doses tested (41 mg/kg/day in mice and hamsters and 66
mg/kg/day in rats and rabbits).
There were several human epidemiological data available for review.
In these studies, sodium nitrate concentrations were evaluated in water
sources for reported cases of children with cyanosis due to
methemoglobinemia. Overall, studies found that wells used to supply
water to children with cyanosis due to methemoglobinemia contained
nitrate levels >1.8 mg/kg/day. Methemoglobinemia was not observed in
infants consuming water containing less than 1.6 mg/kg/day of sodium
nitrate.
B. Toxicological Points of Departure/Levels of Concern
Once a pesticide's toxicological profile is determined, EPA
identifies toxicological points of departure (POD) and levels of
concern to use in evaluating the risk posed by human exposure to the
pesticide. For hazards that have a threshold below which there is no
appreciable risk, the toxicological POD is used as the basis for
derivation of reference values for risk assessment. PODs are developed
based on a careful analysis of the doses in each toxicological study to
determine the dose at which no adverse effects are observed (the NOAEL)
and the lowest dose at which adverse effects of concern are identified
(the LOAEL). Uncertainty/safety factors are used in conjunction with
the POD to calculate a safe exposure level--generally referred to as a
population-adjusted dose (PAD) or a reference dose (RfD)--and a safe
margin of exposure (MOE). For non-threshold risks, the Agency assumes
that any amount of exposure will lead to some degree of risk. Thus, the
Agency estimates risk in terms of the probability of an occurrence of
the adverse effect expected in a lifetime. For more information on the
general principles EPA uses in risk characterization and a complete
description of the risk assessment process, see https://www.epa.gov/pesticide-science-and-assessing-pesticide-risks/overview-risk-assessment-pesticide-program.
[[Page 67377]]
There were no effects that could be attributed to a single dose in
the database. Therefore, an acute oral POD was not selected. Chronic
dietary, incidental oral, dermal and inhalation short- and
intermediate-term exposures were based on the POD of 1.6 mg/kg/day,
based on the concentration of sodium nitrate (1.6 mg/kg/day) in water
at which methemoglobinemia was not observed in infants.
C. Exposure Assessment
1. Dietary exposure from food and feed uses. In evaluating dietary
exposure to nitric acid, EPA considered exposure that may occur from
the existing and proposed uses of nitric acid. EPA assessed dietary
exposures from nitric acid in food as follows:
No adverse effects attributable to a single dietary exposure of
nitric acid were seen in the toxicity databases. Therefore, an acute
dietary risk assessment is not necessary.
In conducting the chronic dietary exposure assessment using the
Dietary Exposure Evaluation Model DEEM-FCIDTM, Version 4.02, EPA used
food consumption information from the U.S. Department of Agriculture's
(USDA's) 2005-2010 National Health and Nutrition Examination Survey,
What We Eat in America (NHANES/WWEIA). As to residue levels in food, no
residue data were submitted for nitric acid. In the absence of specific
residue data, EPA has developed an approach which uses surrogate
information to derive upper bound exposure estimates for the subject
inert ingredient. Upper bound exposure estimates are based on the
highest tolerance for a given commodity from a list of high use
insecticides, herbicides, and fungicides. A complete description of the
general approach taken to assess inert ingredient risks in the absence
of residue data is contained in the memorandum entitled ``Update to
D361707: Dietary Exposure and Risk Assessments for the Inerts.'' (12/
21/2021) and can be found at https://www.regulations.gov in docket ID
number EPA-HQ-OPP-2018-0090.
In the dietary exposure assessment, the Agency assumed that the
residue level of the inert ingredient would be no higher than the
highest tolerance for a given commodity. Implicit in this assumption is
that there would be similar rates of degradation (if any) between the
active and inert ingredient and that the concentration of inert
ingredient in the scenarios leading to these highest levels of
tolerances would be no higher than the concentration of the active
ingredient.
The Agency believes the assumptions used to estimate dietary
exposures lead to an extremely conservative assessment of dietary risk
due to a series of compounded conservatisms.
First, assuming that the level of residue for an inert ingredient
is equal to the level of residue for the active ingredient will
overstate exposure. The concentrations of active ingredient in
agricultural products are generally at least 50 percent of the product
and often can be much higher. Further, pesticide products rarely have a
single inert ingredient; rather there is generally a combination of
different inert ingredients used which additionally reduces the
concentration of any single inert ingredient in the pesticide product
in relation to that of the active ingredient.
Second, the conservatism of this methodology is compounded by EPA's
decision to assume that, for each commodity, the active ingredient
which will serve as a guide to the potential level of inert ingredient
residues is the active ingredient with the highest tolerance level.
This assumption overstates residue values because it would be highly
unlikely, given the high number of inert ingredients, that a single
inert ingredient or class of ingredients would be present at the level
of the active ingredient in the highest tolerance for every commodity.
Finally, a third compounding conservatism is EPA's assumption that all
foods contain the inert ingredient at the highest tolerance level. In
other words, EPA assumed 100 percent of all foods are treated with the
inert ingredient at the rate and manner necessary to produce the
highest residue legally possible for an active ingredient. In summary,
EPA chose a very conservative method for estimating what level of inert
residue could be on food, then used this methodology to choose the
highest possible residue that could be found on food and assumed that
all food contained this residue. No consideration was given to
potential degradation between harvest and consumption even though
monitoring data shows that tolerance level residues are typically one
to two orders of magnitude higher than actual residues in food when
distributed in commerce.
Accordingly, although sufficient information to quantify actual
residue levels in food is not available, the compounding of these
conservative assumptions will lead to a significant exaggeration of
actual exposures. EPA does not believe that this approach
underestimates exposure in the absence of residue data. EPA did assume
that nitric acid will be limited to 10% in pesticide non-residential
formulations that will be applied to crops and raw agricultural
commodities pre- and post-harvest.
2. Dietary exposure from drinking water. For the purpose of the
screening level dietary risk assessment to support this request for an
exemption from the requirement of a tolerance for nitric acid, a
conservative drinking water concentration value of 100 ppb based on
screening level modeling was used to assess the contribution to
drinking water for the chronic dietary risk assessments for parent
compound. These values were directly entered into the dietary exposure
model.
3. From non-dietary exposure. The term ``residential exposure'' is
used in this document to refer to non-occupational, non-dietary
exposure (e.g., textiles (clothing and diapers), carpets, swimming
pools, for lawn and garden pest control, indoor pest control,
termiticides, flea and tick control on pets and hard surface
disinfection on walls, floors, tables).
Short-term residential exposure for adults combines high end dermal
and inhalation handler exposure from indoor hard surface, aerosol
sprays with a high-end post application dermal exposure from contact
with treated lawns and results in an MOE of 6.2. Short-term residential
exposure for children includes total exposures associated with contact
with treated lawns (dermal and hand-to-mouth exposures) and results in
an MOE of 20.
Intermediate-term residential exposure for adults includes high-end
post application dermal exposure from contact with treated lawns and
results in an MOE of 148. Intermediate-term residential exposure for
children includes total exposures associated with contact with treated
lawns (dermal and hand-to-mouth exposures) and result in an MOE of 11.
Because EPA's level of concern for nitric acid is an MOE below 1
these MOEs are not of concern.
4. Cumulative effects from substances with a common mechanism of
toxicity. Section 408(b)(2)(D)(v) of FFDCA requires that, when
considering whether to establish, modify, or revoke a tolerance, the
Agency consider ``available information'' concerning the cumulative
effects of a particular pesticide's residues and ``other substances
that have a common mechanism of toxicity.''
EPA has not found nitric acid to share a common mechanism of
toxicity with any other substances, and nitric acid does not appear to
produce a toxic metabolite produced by other substances. For the
purposes of this tolerance action, therefore, EPA has assumed that
nitric acid does not have
[[Page 67378]]
a common mechanism of toxicity with other substances. For information
regarding EPA's efforts to determine which chemicals have a common
mechanism of toxicity and to evaluate the cumulative effects of such
chemicals, see EPA's website at https://www.epa.gov/pesticide-science-and-assessing-pesticide-risks/cumulative-assessment-risk-pesticides.
D. Safety Factor for Infants and Children
In general. Section 408(b)(2)(C) of FFDCA provides that EPA shall
apply an additional tenfold (10X) margin of safety for infants and
children in the case of threshold effects to account for prenatal and
postnatal toxicity and the completeness of the database on toxicity and
exposure unless EPA determines based on reliable data that a different
margin of safety will be safe for infants and children. This additional
margin of safety is commonly referred to as the Food Quality Protection
Act (FQPA) Safety Factor (SF). In applying this provision, EPA either
retains the default value of 10X, or uses a different additional safety
factor when reliable data available to EPA support the choice of a
different factor.
The Agency has concluded that there is reliable data to determine
that infants and children will be safe if the FQPA SF of 10x is reduced
to 1X for the chronic dietary assessment for the following reasons. The
toxicity database for nitric acid is adequate as it is based on the use
of sodium nitrate data for which there is a robust toxicity database.
The NOAEL used for risk assessment was derived from the critical toxic
effect in the most sensitive human subpopulation (infants ages 8 days
to 5 months). There is no indication of immunotoxicity or neurotoxicity
in the available studies. Additionally, no offspring susceptibility or
reproduction toxicity was observed in the available studies. Based on
the adequacy of the toxicity database, the conservative nature of the
exposure assessment and the lack of concern for prenatal and postnatal
sensitivity, the Agency has concluded that there is reliable data to
determine that infants and children will be safe if the FQPA SF of 10X
is reduced to 1X.
E. Aggregate Risks and Determination of Safety
EPA determines whether acute and chronic dietary pesticide
exposures are safe by comparing aggregate exposure estimates to the
acute PAD (aPAD) and chronic PAD (cPAD). For linear cancer risks, EPA
calculates the lifetime probability of acquiring cancer given the
estimated aggregate exposure. Short-, intermediate-, and chronic-term
risks are evaluated by comparing the estimated aggregate food, water,
and residential exposure to the appropriate PODs to ensure that an
adequate MOE exists.
1. Acute risk. An acute aggregate risk assessment takes into
account acute exposure estimates from dietary consumption of food and
drinking water. No adverse effect resulting from a single oral exposure
was identified and no acute dietary endpoint was selected. Therefore,
nitric acid is not expected to pose an acute risk.
2. Chronic risk. A chronic aggregate risk assessment takes into
account chronic exposure estimates from dietary consumption of food and
drinking water. Using the exposure assumptions described in this unit
for chronic exposure, EPA has concluded that chronic exposure to nitric
acid from food and water will utilize 37% of the cPAD for children 1 to
2 years old, the population group receiving the greatest exposure.
3. Short-term risk. Short-term aggregate exposure takes into
account short-term residential exposure plus chronic exposure to food
and water (considered to be a background exposure level).
Nitric acid may be used as an inert ingredient in pesticide
products that are registered for uses that could result in short-term
residential exposure, and the Agency has determined that it is
appropriate to aggregate chronic exposure through food and water with
short-term residential exposures to nitric acid.
Using the exposure assumptions described in this unit for short-
term exposures, EPA concluded that the combined short-term aggregated
food, water, and residential pesticide exposures result in MOEs of 4
for adults. Adult residential exposure combines high end dermal and
inhalation handler exposure from liquids/trigger sprayer/home garden
with a high-end post application dermal exposure from contact with
treated lawns. EPA has concluded the combined short-term aggregated
food, water, and residential pesticide exposures result in an aggregate
MOE of 2 for children. Children's residential exposure includes total
exposures associated with contact with treated lawns (dermal and hand-
to-mouth exposures). Because EPA's level of concern for nitric acid is
an MOE below 1, these MOEs are not of concern.
4. Intermediate-term risk. Intermediate-term aggregate exposure
takes into account intermediate-term residential exposure plus chronic
exposure to food and water (considered to be a background exposure
level).
Nitric acid may be used as an inert ingredient in pesticide
products that are registered for uses that could result in
intermediate-term residential exposure, and the Agency has determined
that it is appropriate to aggregate chronic exposure through food and
water with intermediate-term residential exposures to nitric acid.
Using the exposure assumptions described in this unit for
intermediate-term exposures, EPA has concluded that the intermediate-
term aggregated food, water, and residential exposures result in
aggregate MOEs of 10 for adults. Adult residential exposure includes
high end post application dermal exposure from contact with treated
lawns. EPA has concluded the combined intermediate-term aggregated
food, water, and residential exposures result in an aggregate MOE of 2
for children. Children's residential exposure includes total exposures
associated with contact with treated lawns (dermal and hand-to-mouth
exposures). Because EPA's level of concern for nitric acid is an MOE
below 1, these MOEs are not of concern.
5. Aggregate cancer risk for U.S. population. Based on the lack of
evidence of carcinogenicity in adequate rodent carcinogenicity studies,
nitric acid is not expected to pose a cancer risk to humans.
6. Determination of safety. Based on these risk assessments, EPA
concludes that there is a reasonable certainty that no harm will result
to the general population, or to infants and children from aggregate
exposure to nitric acid residues.
V. Other Considerations
Analytical Enforcement Methodology
An analytical method is not required for enforcement purposes since
the Agency is not establishing a numerical tolerance for residues of
nitric acid in or on any food commodities. EPA is establishing a
limitation on the amount of nitric acid that may be used in pesticide
formulations. This limitation will be enforced through the pesticide
registration process under the Federal Insecticide, Fungicide, and
Rodenticide Act (``FIFRA''), 7 U.S.C. 136 et seq. EPA will not register
any pesticide formulation for food use that exceeds 10% nitric acid in
the final pesticide formulations.
VI. Conclusions
Therefore, an exemption from the requirement of a tolerance is
established
[[Page 67379]]
for residues of nitric acid (CAS Reg. No. 7697-37-2) when used as an
inert ingredient (pH adjuster) in pesticide formulations applied to
crops and raw agricultural commodities pre- and post-harvest under 40
CFR 180.910, limited to no more than 10% by weight in the pesticide
formulation.
VII. Statutory and Executive Order Reviews
This action establishes a tolerance exemption under FFDCA section
408(d) in response to a petition submitted to the Agency. The Office of
Management and Budget (OMB) has exempted these types of actions from
review under Executive Order 12866, entitled ``Regulatory Planning and
Review'' (58 FR 51735, October 4, 1993). Because this action has been
exempted from review under Executive Order 12866, this action is not
subject to Executive Order 13211, entitled ``Actions Concerning
Regulations That Significantly Affect Energy Supply, Distribution, or
Use'' (66 FR 28355, May 22, 2001) or Executive Order 13045, entitled
``Protection of Children from Environmental Health Risks and Safety
Risks'' (62 FR 19885, April 23, 1997). This action does not contain any
information collections subject to OMB approval under the Paperwork
Reduction Act (PRA) (44 U.S.C. 3501 et seq.), nor does it require any
special considerations under Executive Order 12898, entitled ``Federal
Actions to Address Environmental Justice in Minority Populations and
Low-Income Populations'' (59 FR 7629, February 16, 1994).
Since tolerances and exemptions that are established on the basis
of a petition under FFDCA section 408(d), such as the tolerance
exemption in this final rule, do not require the issuance of a proposed
rule, the requirements of the Regulatory Flexibility Act (RFA) (5
U.S.C. 601 et seq.), do not apply.
This action directly regulates growers, food processors, food
handlers, and food retailers, not States or tribes, nor does this
action alter the relationships or distribution of power and
responsibilities established by Congress in the preemption provisions
of FFDCA section 408(n)(4). As such, the Agency has determined that
this action will not have a substantial direct effect on States or
Tribal Governments, on the relationship between the National Government
and the States or Tribal Governments, or on the distribution of power
and responsibilities among the various levels of government or between
the Federal Government and Indian Tribes. Thus, the Agency has
determined that Executive Order 13132, entitled ``Federalism'' (64 FR
43255, August 10, 1999) and Executive Order 13175, entitled
``Consultation and Coordination with Indian Tribal Governments'' (65 FR
67249, November 9, 2000) do not apply to this action. In addition, this
action does not impose any enforceable duty or contain any unfunded
mandate as described under Title II of the Unfunded Mandates Reform Act
(UMRA) (2 U.S.C. 1501 et seq.).
This action does not involve any technical standards that would
require Agency consideration of voluntary consensus standards pursuant
to section 12(d) of the National Technology Transfer and Advancement
Act (NTTAA) (15 U.S.C. 272 note).
VIII. Congressional Review Act
Pursuant to the Congressional Review Act (5 U.S.C. 801 et seq.),
EPA will submit a report containing this rule and other required
information to the U.S. Senate, the U.S. House of Representatives, and
the Comptroller General of the United States prior to publication of
the rule in the Federal Register. This action is not a ``major rule''
as defined by 5 U.S.C. 804(2).
List of Subjects in 40 CFR Part 180
Environmental protection, Administrative practice and procedure,
Agricultural commodities, Pesticides and pests, Reporting and
recordkeeping requirements.
Dated: October 31, 2022.
Jennifer Saunders,
Acting Director, Registration Division, Office of Pesticide Programs.
Therefore, for the reasons stated in the preamble, EPA is amending
40 CFR chapter I as follows:
PART 180--TOLERANCES AND EXEMPTIONS FOR PESTICIDE CHEMICAL RESIDUES
IN FOOD
0
1. The authority citation for part 180 continues to read as follows:
Authority: 21 U.S.C. 321(q), 346a and 371.
0
2. In Sec. 180.910, amend table 1 by adding, in alphabetical order the
inert ingredient ``Nitric acid (CAS Reg. No. 7697-37-2)'' to read as
follows:
Sec. 180.910 Inert ingredients used pre- and post-harvest; exemptions
from the requirement of a tolerance.
* * * * *
Table 1 to 180.910
----------------------------------------------------------------------------------------------------------------
Inert ingredients Limits Uses
----------------------------------------------------------------------------------------------------------------
* * * * * * *
Nitric acid (CAS Reg. No. 7697-37-2).... 10% by weight in pesticide pH adjuster.
formulation.
* * * * * * *
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[FR Doc. 2022-23978 Filed 11-7-22; 8:45 am]
BILLING CODE 6560-50-P