
[Federal Register Volume 80, Number 153 (Monday, August 10, 2015)]
[Notices]
[Pages 47919-47922]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2015-19590]


=======================================================================
-----------------------------------------------------------------------

ENVIRONMENTAL PROTECTION AGENCY

[EPA-HQ-OPP-2015-0099; FRL-9929-22]


Registration Review Proposed Interim Decisions; Notice of 
Availability

AGENCY: Environmental Protection Agency (EPA).

ACTION: Notice.

-----------------------------------------------------------------------

SUMMARY: This notice announces the availability of EPA's proposed 
interim registration review decisions for the pesticides listed in the 
table in Unit II of this notice, and opens a public comment period on 
the proposed decisions. This notice also opens the dockets and 
announces the availability of EPA's proposed interim registration 
review decisions for 2-propen-1-aminium, N,N-dimethyl-N-2-propenyl-, 
chloride, homopolymer (or homopolymer) and tributyltin oxide (or TBTO); 
and also opens the docket, announces the availability of the draft 
human health and ecological risk assessments, and announces the 
proposed interim registration review decision for dipropyl 
isocinchomeronate. Registration review is EPA's periodic review of 
pesticide registrations to ensure that each pesticide continues to 
satisfy the statutory standard for registration, that is, that the 
pesticide can perform its intended function without unreasonable 
adverse effects on human health or the environment. Through this 
program, EPA is ensuring that each pesticide's registration is based on 
current scientific and other knowledge, including its effects on human 
health and the environment.

DATES: Comments must be received on or before October 9, 2015.

ADDRESSES: Submit your comments, identified by the docket 
identification (ID) number for the specific pesticide of interest 
provided in the table in Unit II.A., by one of the following methods:
     Federal eRulemaking Portal: http://www.regulations.gov. 
Follow the online instructions for submitting comments. Do not submit 
electronically any information you consider to be Confidential Business 
Information (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 http://www.epa.gov/dockets/contacts.html. Additional 
instructions on commenting or visiting the docket, along with more 
information about dockets generally, is available at http://www.epa.gov/dockets.

FOR FURTHER INFORMATION CONTACT: 
    For pesticide specific information, contact: the Chemical Review 
Manager for the pesticide of interest identified in the table in Unit 
II.
    For general information on the registration review program, 
contact: Richard Dumas, Pesticide Re-Evaluation Division (7508P), 
Office of Pesticide Programs, Environmental Protection Agency, 1200 
Pennsylvania Ave. NW., Washington, DC 20460-0001; telephone number: 
(703) 308-8015; email address: dumas.richard@epa.gov.

SUPPLEMENTARY INFORMATION:

I. General Information

A. Does this action apply to me?

    This action is directed to the public in general, and may be of 
interest to a wide range of stakeholders including environmental, human 
health, farm worker, and agricultural advocates; the chemical industry; 
pesticide users; and members of the public interested in the sale, 
distribution, or use of pesticides. Since others also may be 
interested, the Agency has not attempted to describe all the specific 
entities that may be affected by this action. If you have any questions 
regarding the applicability of this action to a particular entity, 
consult the Chemical Review Manager for the pesticide of interest 
identified in the table in Unit II.

B. What should I consider as I prepare my comments for EPA?

    1. Submitting CBI. Do not submit this information to EPA through 
regulations.gov or email. Clearly mark the part or all of the 
information that you claim to be CBI. For CBI information in a disk or 
CD-ROM that you mail to EPA, mark the outside of the disk or CD-ROM as 
CBI and then identify electronically within the disk or CD-ROM the 
specific information that is claimed as CBI. In addition to one 
complete version of the comment that includes information claimed as 
CBI, a copy of the comment that does not contain the information 
claimed as CBI must be submitted for inclusion in the public docket. 
Information so marked will not be disclosed except in accordance with 
procedures set forth in 40 CFR part 2.
    2. Tips for preparing your comments. When preparing and submitting 
your comments, see the commenting tips at http://www.epa.gov/dockets/comments.html.

II. What action is the Agency taking?

    Pursuant to 40 CFR 155.58, this notice announces the availability 
of EPA's proposed interim registration review decisions for the 
pesticides shown in the following table, and opens a 60-day public 
comment period on the proposed interim decisions.

[[Page 47920]]



                              Table--Registration Review Proposed Interim Decisions
----------------------------------------------------------------------------------------------------------------
  Registration review case name and                                                 Chemical review manager and
                number                              Docket ID number                    contact information
----------------------------------------------------------------------------------------------------------------
Chlorfenapyr 7419....................  EPA-HQ-OPP-2010-0467                        Margaret Hathaway,
                                                                                    hathaway.margaret@epa.gov,
                                                                                    703-305-5076.
Daminozide 0032......................  EPA-HQ-OPP-2009-0242                        Margaret Hathaway,
                                                                                    hathaway.margaret@epa.gov,
                                                                                    703-305-5076.
Dipropyl isocinchomeronate 2215......  EPA-HQ-OPP-2014-0578                        Marianne Mannix,
                                                                                    mannix.marianne@epa.gov, 703-
                                                                                    347-0275.
Fenoxaprop p-ethyl 7209..............  EPA-HQ-OPP-2007-0437                        Miguel Zavala,
                                                                                    zavala.miguel@epa.gov, 703-
                                                                                    347-0504.
Imazapyr 3078........................  EPA-HQ-OPP-2014-0200                        Joel Wolf, wolf.joel@epa.gov,
                                                                                    703-347-0228.
Isoxaben 7219........................  EPA-HQ-OPP-2007-1038                        Christina Scheltema,
                                                                                    scheltema.christina@epa.gov,
                                                                                    703-308-2201.
Paclobutrazol 7002...................  EPA-HQ-OPP-2006-0109                        Khue Nguyen
                                                                                    nguyen.khue@epa.gov 703-347-
                                                                                    0248.
2-Propen-1-aminium, N,N-dimethyl-N-2-  EPA-HQ-OPP-2015-0255                        Donna Kamarei,
 propenyl-, chloride, homopolymer (or                                               kamarei.donna@epa.gov, 703-
 homopolymer) 5024.                                                                 347-0443.
Silicon dioxide and silica gel 4081..  EPA-HQ-OPP-2007-1140                        James Parker
                                                                                    parker.james@epa.gov 703-306-
                                                                                    0469.
Sulfentrazone 7231...................  EPA-HQ-OPP-2009-0624                        Christina Scheltema,
                                                                                    scheltema.christina@epa.gov,
                                                                                    703-308-2201.
Tributyltin Oxide (or TBTO) 2620.....  EPA-HQ-OPP-2014-0801                        Sandra O'Neill,
                                                                                    oneill.sandra@epa.gov, 703-
                                                                                    347-0141.
----------------------------------------------------------------------------------------------------------------

    The registration review final decisions for these cases are 
dependent on the assessments of listed species under the Endangered 
Species Act (ESA), determinations on the potential for endocrine 
disruption, and/or assessments of exposure and risk to pollinators.
    Chlorfenapyr (Proposed Interim Decision). Chlorfenapyr is a member 
of the pyrroles class of insecticide/miticides, which works by 
disrupting adenosine triphosphate (ATP) production, leading to cell 
dysfunction. Chlorfenapyr is registered only for application to 
fruiting vegetables and ornamentals in greenhouses; and as a crack/
crevice/spot treatment on indoor and outdoor residential sites 
(including treatment for bed bugs), food/feed handling areas, indoor 
and outdoor commercial sites, and indoor medical sites. EPA conducted 
assessments for both human health and ecological risks. Possible human 
health risks of concern were identified for chlorfenapyr, including 
occupational risks and risks to young children for certain residential 
uses. Several risk mitigation measures, including the termination of 
the use of chlorfenapyr on mattresses, are proposed to address human 
health risk concerns. No risks of concern were identified in the 
ecological risk assessment for non-listed species. The Agency has made 
a No Effect determination for chlorfenapyr under ESA section 7 for all 
listed species and a No Habitat Modification determination for all 
designated critical habitats for the currently registered uses.
    Daminozide (Proposed Interim Decision). Daminozide is a systemic 
plant growth regulator registered to control the development of 
commercially grown container plants. It is used in nurseries, 
shadehouses, and greenhouses, and is applied as a foliar spray, a use 
pattern resulting in little or no potential for off-site drift. 
Daminozide has no registered food or residential uses. EPA conducted 
ecological and human health risk assessments for daminozide, and 
concluded that there were no significant risks of concern. Other than 
clarifying application rate information, the Agency is not calling for 
changes to daminozide registrations or labels at this time.
    Dipropyl isocinchomeronate (Combined Docket Opening, Release of 
Draft Human Health and Ecological Risk Assessments, and Proposed 
Interim Decision). Dipropyl isocinchomeronate is registered for use as 
an insect repellent for use on humans and companion animals to repel 
flies, gnats, and other flying and biting insects. The Agency has 
concluded that there are no human health risk concerns associated with 
the use of dipropyl isocinchomeronate. Based on the limited usage, 
diffusion over a large treatment area, and the low probability of non-
target organism exposure, the Agency has not found any ecological risks 
of concern associated with dipropyl isocinchomeronate, and anticipates 
making a No Effect determination for all listed species and a No 
Habitat Modification determination for all designated critical habitats 
for listed species. At this time, the Agency is proposing that no 
additional data are needed, and is not proposing any risk reduction 
measures for this case.
    Fenoxaprop p-ethyl (Proposed Interim Decision). FPE is a selective 
aryloxy phenoxy-propionate herbicide registered for use on barley, 
cotton, rice, soybeans, and wheat for post-emergence control of grassy 
weeds. Additional non-agricultural use sites include conservation 
reserves, ornamentals, rights-of-way, and turf. EPA's Registration 
Review Proposed Interim Decision for FPE is: First; no additional data 
are required at this time; and second, certain risk reduction measures 
are needed at this time. To address potential risk to non-target 
terrestrial monocots, spray drift management language is proposed for 
all FPE product registrations used on agricultural, wide area, or 
rights-of-way use sites. The Agency also is proposing the 
implementation of label language clarifying use rates, to which the 
registrants have already agreed. In addition, EPA proposes label 
language to include recommended herbicide-resistance management 
measures.
    Imazapyr (Proposed Interim Decision). Imazapyr is a non-selective 
systemic herbicide registered for use in pre- and post-emergent 
treatments to control terrestrial and aquatic weeds, including grasses, 
broadleaf weeds, and woody species. The registration review case 
includes both the acid (imazapyr) and the isopropylamine salt (imazapyr 
IPA). EPA's Registration Review Proposed Interim Decision for the case 
is that first, no additional data are required at this time, and 
second, no changes to the registrations or their labeling are needed at 
this time.
    Isoxaben (Proposed Interim Decision). Isoxaben is a pre-emergent, 
soil-directed benzamide herbicide registered for use in controlling a 
variety of broad-leaf weeds. Agricultural uses include grapes and 
bearing fruit and nut trees. Non-agricultural uses include turf, lawns, 
ornamentals, and landscape mulch. Quantitative human health and

[[Page 47921]]

ecological risk assessments were completed for isoxaben. There are no 
occupational or residential risks of concern. There are potential 
ecological risks to listed and non-listed aquatic vascular and 
terrestrial plants, and risks to mammals from foliar applications of 
isoxaben. The Agency has made the following Registration Review 
Proposed Interim Decision for isoxaben: First, no additional data are 
required at this time, and second, certain risk reduction measures are 
needed at this time, including uniform spray drift management label 
language for products applied by spraying, and recommended herbicide 
resistance management language on all product labels.
    Paclobutrazol (Proposed Interim Decision). Paclobutrazol is a 
systemic triazole plant growth regulator registered for use on 
nonresidential turf, on ornamentals in greenhouses and nurseries, as a 
tree injection, and as a seed treatment for certain vegetable crops. 
There are no residential uses of paclobutrazol. EPA conducted risk 
assessments for both human health and ecological risk, and a screening 
level endangered species assessment. No human health risks were 
identified. The ecological risk assessment indicated potential risks to 
birds, mammals, terrestrial and aquatic plants, freshwater and 
estuarine/marine fish, and freshwater and estuarine/marine 
invertebrates. The Agency is proposing to modify the application 
directions for paclobutrazol to reduce risks to non-target organisms 
from runoff. The screening-level endangered species assessment did not 
come to a conclusion of No Effect to listed species, therefore, 
consultation with the Fish and Wildlife Service and the National Marine 
Fisheries Service (``the Services'') on the potential risk of 
paclobutrazol to listed species will be necessary.
    2-Propen-1-aminium, N,N-dimethyl-N-2-propenyl-, chloride, 
homopolymer (Combined Preliminary Work Plan and Proposed Interim 
Decision). There is one product containing this active ingredient; it 
is registered to control mollusks in potable water supplies. The Agency 
did not call-in any data in support of this registration review case. 
Additionally, the Agency did not conduct a human health or an 
environmental risk assessment due to the lack of exposure concern for 
the product's registered use. Based on the lack of potential exposure, 
the Agency is proposing a No Effect determination for listed species.
    Silicon dioxide and silica gel (Proposed Interim Decision). 
Products containing these two naturally occurring active ingredients 
are registered for use as insecticides on a variety of agricultural and 
residential use sites to control pests such as ants, cockroaches, 
flies, fleas, and ticks. EPA conducted an ecological risk assessment 
that included a screening-level endangered species assessment. The 
Agency engaged in informal consultation with FWS to reach a ``may 
affect, but not likely to adversely affect'' determination for direct 
effects to terrestrial invertebrates and a No Effect determination for 
all other listed taxa. No human health risk assessment was conducted 
because no toxicological endpoints are identified for the two active 
ingredients. No risk mitigation measures for human health or ecological 
effects are included in the silica gel and silicon dioxide Proposed 
Interim Decision.
    Sulfentrazone (Proposed Interim Decision). Sulfentrazone is a broad 
spectrum, pre-emergence, soil-directed proto porphyrinogen herbicide 
used to control a variety of weeds. It is registered for use on field 
crops, specialty vegetable crops, fruit trees, ornamentals, and turf 
grass. EPA completed quantitative human health and ecological risk 
assessments for sulfentrazone in 2014, and amended the ecological risk 
assessment in 2015. There are no residential risks of concern; however, 
there is a risk concern for pesticide handlers that can be adequately 
mitigated by wearing chemical-resistant gloves. In addition, there are 
potential risk concerns for terrestrial plants. The Agency has made the 
following Registration Review Proposed Interim Decision for 
sulfentrazone: First, no additional data are required at this time; and 
second, certain risk reduction measures are needed at this time. These 
measures include uniform spray drift management language on 
sulfentrazone labels for products applied by spraying and recommended 
herbicide resistance management language on all product labels.
    Tributyltin oxide (Combined Preliminary Work Plan and Proposed 
Interim Decision). There are two EPA registrations for TBTO for rubber 
coatings on the sonar domes of nuclear submarines and for oceanographic 
conductivity sensors. Based on the lack of potential for dietary 
exposure and no residential uses, the Agency did not conduct a human 
health risk assessment. Exposure to aquatic organisms would occur only 
from the small amount of TBTO potentially leaching from sonar domes, 
and the Agency believes that risks to non-target, non-listed species 
are minimal. TBTO use as an antifoulant on sonar domes is undergoing 
ESA consultation with the Department of Defense, EPA, and the Services 
for compounds covered under EPA's Uniform National Discharge Standards. 
At this time, the Agency is proposing that no additional data are 
needed, and is not proposing any risk reduction measures for this case.
    The registration review docket for a pesticide includes earlier 
documents related to the registration review of the case. For example, 
the review typically opens with the availability of a Summary Document, 
containing a Preliminary Work Plan, for public comment. A Final Work 
Plan typically is placed in the docket following public comment on the 
initial docket. Following a period for public comment on the proposed 
interim decisions announced in this notice, the Agency will issue 
interim registration review decisions for products containing the 
affected active ingredients.
    The registration review program is being conducted under 
congressionally mandated time frames, and EPA recognizes the need both 
to make timely decisions and to involve the public. Section 3(g) of the 
Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) (7 U.S.C. 
136a(g)) required EPA to establish by regulation procedures for 
reviewing pesticide registrations, originally with a goal of reviewing 
each pesticide's registration every 15 years to ensure that a pesticide 
continues to meet the FIFRA standard for registration. The Agency's 
final rule to implement this program was issued in the Federal Register 
of August 9, 2006 (71 FR 45720) (FRL-8080-4) and became effective in 
October 2006, and appears at 40 CFR part 155, subpart C. The Pesticide 
Registration Improvement Act of 2003 (PRIA) was amended and extended in 
September 2007. FIFRA, as amended by PRIA in 2007, requires EPA to 
complete registration review decisions by October 1, 2022, for all 
pesticides registered as of October 1, 2007.
    The registration review final rule at 40 CFR 155.58(a) provides for 
a minimum 60-day public comment period on all proposed interim 
registration review decisions. This comment period is intended to 
provide an opportunity for public input and a mechanism for initiating 
any necessary amendments to the proposed interim decisions. All 
comments should be submitted using the methods in ADDRESSES, and must 
be received by EPA on or before the closing date. These comments will 
become part of the docket for the pesticides included in the table in 
Unit II. Comments received after the close of the comment period will 
be marked ``late.'' EPA is not

[[Page 47922]]

required to consider these late comments.
    The Agency will carefully consider all comments received by the 
closing date and, as appropriate, will provide a ``Response to Comments 
Memorandum'' in the docket for each of the pesticides included in the 
table in Unit II. The interim registration review decision will explain 
the effect that any such comments had on the decision and provide the 
Agency's response to significant comments, as needed.
    Background on the registration review program is provided at: 
http://www2.epa.gov/pesticide-reevaluation. Links to earlier documents 
related to the registration review of the pesticide cases identified in 
this notice are provided on the Pesticide Chemical Search data base 
accessible at: http://iaspub.epa.gov/apex/pesticides/f?p=chemicalsearch.

    Authority:  7 U.S.C. 136 et seq.

    Dated: July 30, 2015.
Richard P. Keigwin, Jr.,
Director, Pesticide Re-Evaluation Division, Office of Pesticide 
Programs.
[FR Doc. 2015-19590 Filed 8-7-15; 8:45 am]
 BILLING CODE 6560-50-P


