[Federal Register Volume 82, Number 181 (Wednesday, September 20, 2017)]
[Rules and Regulations]
[Pages 43829-43832]
[FR Doc No: 2017-19660]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2017-0334; Product Identifier 2017-NM-008-AD; Amendment
39-19039; AD 2017-19-09]
RIN 2120-AA64

Airworthiness Directives; Bombardier, Inc., Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).

ACTION: Final rule.

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SUMMARY: We are superseding Airworthiness Directive (AD) 2014-25-01,
which applied to certain Bombardier, Inc., Model DHC-8-400 series
airplanes. AD 2014-25-01 required modifying the nose landing gear (NLG)
trailing arm and installing a new pivot pin retention mechanism. This
AD instead requires modifying the NLG shock strut assembly. This AD was
prompted by reports of discrepancies of a certain bolt at the pivot pin
link, resulting in corrosion of the bolt. We are issuing this AD to
address the unsafe condition on these products.

DATES: This AD is effective October 24, 2017.
    The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of October 24,
2017.

ADDRESSES: For service information identified in this final rule,
contact Bombardier, Inc., Q-Series Technical Help Desk, 123 Garratt
Boulevard, Toronto, Ontario M3K 1Y5, Canada; telephone<PHONE_NUMBER>;
fax<PHONE_NUMBER>; email<EMAIL_ADDRESS>Internet
http://www.bombardier.com. You may view this referenced service
information at the FAA, Transport Standards Branch, 1601 Lind Avenue
SW., Renton, WA. For information on the availability of this material
at the FAA, call<PHONE_NUMBER>. It is also available on the Internet at
http://www.regulations.gov by searching for and locating Docket No.
FAA-2017-0334.

Examining the AD Docket

    You may examine the AD docket on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2017-
0334; or in person at the Docket Management Facility between 9 a.m. and
5 p.m., Monday through Friday, except Federal holidays. The AD docket
contains this AD, the regulatory

evaluation, any comments received, and other information. The address
for the Docket Office (telephone<PHONE_NUMBER>) is Docket Management
Facility, U.S. Department of Transportation, Docket Operations, M-30,
West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE.,
Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Fabio Buttitta, Aerospace Engineer,
Airframe and Mechanical Systems Section, FAA, New York ACO Branch, 1600
Stewart Avenue, Suite 410, Westbury, NY 11590; telephone<PHONE_NUMBER>;
fax<PHONE_NUMBER>.

SUPPLEMENTARY INFORMATION:

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 to supersede AD 2014-25-01, Amendment 39-18042 (79 FR 73808,
December 12, 2014) (``AD 2014-25-01''). AD 2014-25-01 applied to
certain Bombardier, Inc., Model DHC-8-400 series airplanes. The NPRM
published in the Federal Register on May 9, 2017 (82 FR 21484). The
NPRM was prompted by reports of discrepancies of a certain bolt at the
pivot pin link, resulting in corrosion of the bolt. The NPRM proposed
to require modifying the NLG shock strut assembly. We are issuing this
AD to prevent failure of the pivot pin retention bolt, which could
result in a loss of directional control or loss of an NLG tire during
takeoff or landing.
    Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued Canadian Airworthiness Directive CF-
2009-29R2, dated December 21, 2016 (referred to after this as the
Mandatory Continuing Airworthiness Information, or ``the MCAI''), to
correct an unsafe condition for certain Bombardier, Inc., Model DHC-8-
400 series airplanes. The MCAI states:

    Two in-service incidents have been reported on DHC-8 Series 400
aircraft in which the nose landing gear (NLG) trailing arm pivot pin
retention bolt (part number NAS6204-13D) was damaged. One incident
involved the left hand NLG tire which ruptured on take-off.
Investigation determined that the retention bolt failure was due to
repeated contact of the castellated nut with the towing device
including both the towbar and the towbarless rigs. The loss of the
retention bolt allowed the pivot pin to migrate from its normal
position and resulted in contact with and rupture of the tire. The
loss of the pivot pin could compromise retention of the trailing arm
and could result in a loss of directional control due to loss of
nose wheel steering. The loss of an NLG tire or the loss of
directional control could adversely affect the aircraft during take-
off or landing.
    To prevent the potential failure of the pivot pin retention
bolt, Bombardier Aerospace has developed a modification which
includes a new retention bolt, a reverse orientation of the
retention bolt and a rework of the weight on wheel (WOW) proximity
sensor cover to provide clearance for the re-oriented retention
bolt.
    Since the original issue of this [Canadian] AD [which
corresponds to AD 2010-13-04, Amendment 39-16335 (75 FR 35622, June
23, 2010)], there have been several reports of pivot pin retention
bolts found missing or damaged. Additional investigation determined
that the failures were caused by high contact stresses on the
retention bolt due to excessive frictional torque on the pivot pin
and an adverse tolerance condition at the retention bolt.
    Revision 1 of this [Canadian] AD mandated the installation of a
new pivot pin retention mechanism.
    Since the issuance of Revision 1 of this [Canadian] AD, there
have been reports of chrome peeling on special bolt part number
47205-1 at the pivot pin link resulting in corrosion of the bolt
substrate layer.
    Revision 2 of this [Canadian] AD mandates the installation of
new special bolt part number 47205-3 with additional processing for
increased chrome plating adhesion on aeroplanes equipped with nose
landing gear shock strut assembly part number 47100-19 or any
assembly with Bombardier (BA) Service Bulletin (SB) 84-32-110
incorporated. In addition, Revision 2 of this [Canadian] AD mandates
the installation of a new pivot pin retention mechanism that
includes new special bolt part number 47205-3 on aeroplanes equipped
with nose landing gear shock strut assembly part number 47100-9,
47100-11, 47100-13, 47100-15, or 47100-17 without BA SB 84-32-110
incorporated. The corrective actions of Revision 2 of this
[Canadian] AD cancel and replace the corrective actions of Revision
1 of this [Canadian] AD.

    You may examine the MCAI in the AD docket on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2017-
0334.

Comments

    We gave the public the opportunity to participate in developing
this AD. The following presents the comments received on the NPRM and
the FAA's response to each comment.

Support for the NPRM

    The Air Line Pilots Association, International concurred with the
intent of the NPRM.

Request To Exclude Setup and Closeout Sections

    Horizon Air asked that we revise paragraph (g) of the proposed AD
to exclude the ``Job Set-up'' and ``Close Out'' sections of Bombardier
Service Bulletin 84-32-145, Revision A, dated October 18, 2016. Horizon
Air stated that incorporating those sections as a requirement of the AD
restricts an operator's ability to perform other maintenance in
conjunction with incorporation of the referenced service information.
    We agree with the commenter's request for the reason provided. We
have revised paragraph (g) of this AD to require accomplishment of only
paragraph 3.B., ``Procedure'' of the Accomplishment Instructions of
Bombardier Service Bulletin 84-32-145, Revision A, dated October 18,
2016.

Conclusion

    We reviewed the relevant data, considered the comments received,
and determined that air safety and the public interest require adopting
this AD with the change described previously and minor editorial
changes. We have determined that these minor changes:
     Are consistent with the intent that was proposed in the
NPRM for correcting the unsafe condition; and
     Do not add any additional burden upon the public than was
already proposed in the NPRM.
    We also determined that these changes will not increase the
economic burden on any operator or increase the scope of this AD.

Related Service Information Under 1 CFR Part 51

    Bombardier, Inc., has issued Bombardier Service Bulletin 84-32-145,
Revision A, dated October 18, 2016. The service information describes
procedures for modifying the NLG shock strut assembly by installing a
new, improved pivot pin retention mechanism and a new retention bolt.
This service information is reasonably available because the interested
parties have access to it through their normal course of business or by
the means identified in the ADDRESSES section.

Costs of Compliance

    We estimate that this AD affects 52 airplanes of U.S. registry.
    We also estimate that it takes about 2 work-hours per product to
comply with the basic requirements of this AD. The average labor rate
is $85 per work-hour. Required parts will cost about $0 per product.
Based on these figures, we estimate the cost of this AD on U.S.
operators to be $8,840, or $170 per product.

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I,

section 106, describes the authority of the FAA Administrator.
``Subtitle VII: Aviation Programs,'' describes in more detail the scope
of the Agency's authority.
    We are issuing this rulemaking under the authority described in
``Subtitle VII, Part A, Subpart III, Section 44701: General
requirements.'' Under that section, Congress charges the FAA with
promoting safe flight of civil aircraft in air commerce by prescribing
regulations for practices, methods, and procedures the Administrator
finds necessary for safety in air commerce. This regulation is within
the scope of that authority because it addresses an unsafe condition
that is likely to exist or develop on products identified in this
rulemaking action.
    This AD is issued in accordance with authority delegated by the
Executive Director, Aircraft Certification Service, as authorized by
FAA Order 8000.51C. In accordance with that order, issuance of ADs is
normally a function of the Compliance and Airworthiness Division, but
during this transition period, the Executive Director has delegated the
authority to issue ADs applicable to transport category airplanes to
the Director of the System Oversight Division.

Regulatory Findings

    We determined that this AD will not have federalism implications
under Executive Order 13132. This AD will not have a substantial direct
effect on the States, on the relationship between the national
government and the States, or on the distribution of power and
responsibilities among the various levels of government.
    For the reasons discussed above, I certify that this AD:
    1. Is not a ``significant regulatory action'' under Executive Order
12866;
    2. Is not a ``significant rule'' under the DOT Regulatory Policies
and Procedures (44 FR 11034, February 26, 1979);
    3. Will not affect intrastate aviation in Alaska; and
    4. Will not have a significant economic impact, positive or
negative, on a substantial number of small entities under the criteria
of the Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.

Adoption of the Amendment

    Accordingly, under the authority delegated to me by the
Administrator, the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

    Authority:  49 U.S.C. 106(g), 40113, 44701.

Sec.  39.13  [Amended]

0
2. The FAA amends Sec.  39.13 by removing Airworthiness Directive (AD)
2014-25-01, Amendment 39-18042 (79 FR 73808, December 12, 2014), and
adding the following new AD:

2017-19-09 Bombardier, Inc.: Amendment 39-19039; Docket No. FAA-
2017-0334; Product Identifier 2017-NM-008-AD.

(a) Effective Date

    This AD is effective October 25, 2017.

(b) Affected ADs

    This AD replaces AD 2014-25-01, Amendment 39-18042 (79 FR 73808,
December 12, 2014).

(c) Applicability

    This AD applies to Bombardier, Inc., Model DHC-8-400, -401, and
-402 airplanes, certificated in any category, serial numbers 4001,
4003 through 4533 inclusive, and 4535, equipped with any nose
landing gear (NLG) shock strut assembly having part number 47100-9,
47100-11, 47100-13, 47100-15, 47100-17, or 47100-19.

(d) Subject

    Air Transport Association (ATA) of America Code 32, Landing
Gear.

(e) Reason

    This AD was prompted by reports of discrepancies of a certain
bolt at the pivot pin link, resulting in corrosion of the bolt. We
are issuing this AD to prevent failure of the pivot pin retention
bolt, which could result in a loss of directional control or loss of
an NLG tire during takeoff or landing.

(f) Compliance

    Comply with this AD within the compliance times specified,
unless already done.

(g) Installation of Improved Pivot Pin Retention Mechanism and Bolt

    Within 6,000 flight hours or 36 months after the effective date
of this AD, whichever occurs first: Install a new pivot pin
retention mechanism to the NLG shock strut assembly, and replace the
existing pivot pin retention bolt with a new bolt, in accordance
with paragraph 3.B., ``Procedure,'' of the Accomplishment
Instructions of Bombardier Service Bulletin 84-32-145, Revision A,
dated October 18, 2016.

(h) Credit for Previous Actions

    This paragraph provides credit for actions required by paragraph
(g) of this AD, if those actions were performed before the effective
date of this AD using Bombardier Service Bulletin 84-32-145, dated
July 26, 2016.

(i) Other FAA AD Provisions

    The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, New
York ACO Branch, FAA, has the authority to approve AMOCs for this
AD, if requested using the procedures found in 14 CFR 39.19. In
accordance with 14 CFR 39.19, send your request to your principal
inspector or local Flight Standards District Office, as appropriate.
If sending information directly to the manager of the certification
office, send it to ATTN: Program Manager, Continuing Operational
Safety, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; telephone<PHONE_NUMBER>; fax<PHONE_NUMBER>. Before
using any approved AMOC, notify your appropriate principal
inspector, or lacking a principal inspector, the manager of the
local flight standards district office/certificate holding district
office.
    (2) Contacting the Manufacturer: As of the effective date of
this AD, for any requirement in this AD to obtain corrective actions
from a manufacturer, the action must be accomplished using a method
approved by the Manager, New York ACO Branch, FAA; or Transport
Canada Civil Aviation (TCCA); or Bombardier, Inc.'s TCCA Design
Approval Organization (DAO). If approved by the DAO, the approval
must include the DAO-authorized signature.

(j) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information
(MCAI) Canadian Airworthiness Directive CF-2009-29R2, dated December
21, 2016, for related information. This MCAI may be found in the AD
docket on the Internet at http://www.regulations.gov by searching
for and locating Docket No. FAA-2017-0334.
    (2) For more information about this AD, contact Fabio Buttitta,
Aerospace Engineer, Airframe and Mechanical Systems Section, FAA,
New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY
11590; telephone<PHONE_NUMBER>; fax<PHONE_NUMBER>.
    (3) Service information identified in this AD that is not
incorporated by reference is available at the addresses specified in
paragraphs (k)(3) and (k)(4) of this AD.

(k) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the
incorporation by reference (IBR) of the service information listed
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this service information as applicable to do
the actions required by this AD, unless this AD specifies otherwise.
    (i) Bombardier Service Bulletin 84-32-145, Revision A, dated
October 18, 2016.
    (ii) Reserved.
    (3) For service information identified in this AD, contact
Bombardier, Inc., Q-Series Technical Help Desk, 123 Garratt
Boulevard, Toronto, Ontario M3K 1Y5, Canada; telephone<PHONE_NUMBER>;
fax<PHONE_NUMBER>; email<EMAIL_ADDRESS>Internet
http://www.bombardier.com.
    (4) You may view this service information at the FAA, Transport
Standards Branch,

1601 Lind Avenue SW., Renton, WA. For information on the
availability of this material at the FAA, call<PHONE_NUMBER>.
    (5) You may view this service information that is incorporated
by reference at the National Archives and Records Administration
(NARA). For information on the availability of this material at
NARA, call<PHONE_NUMBER>, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued in Renton, Washington, on September 7, 2017.
Jeffrey E. Duven,
Director, System Oversight Division, Aircraft Certification Service.
[FR Doc. 2017-19660 Filed 9-19-17; 8:45 am]
BILLING CODE 4910-13-P


[Federal Register Volume 86, Number 76 (Thursday, April 22, 2021)]
[Proposed Rules]
[Pages 21259-21267]
[FR Doc No: 2021-08238]

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DEPARTMENT OF TRANSPORTATION

Federal Motor Carrier Safety Administration

49 CFR Parts 383, 384, and 391

[Docket No. FMCSA-2018-0152]
RIN 2126-AC18

Extension of Compliance Dates for Medical Examiner's
Certification Integration

AGENCY: Federal Motor Carrier Safety Administration (FMCSA), Department
of Transportation (DOT).

ACTION: Supplemental notice of proposed rulemaking.

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SUMMARY: FMCSA proposes to amend its regulations to extend the
compliance date from June 22, 2021, to June 23, 2025, for several
provisions of its April 23, 2015, Medical Examiner's Certification
Integration final rule. FMCSA issued an interim final rule (IFR) on
June 21, 2018, extending the compliance date for these provisions until
June 22, 2021. FMCSA proposes to finalize the IFR by further extending
the compliance date to June 23, 2025. This action is being taken to
provide FMCSA time to complete certain information technology (IT)
system development tasks for its National Registry of Certified Medical
Examiners (National Registry) and to provide the State Driver's
Licensing Agencies (SDLAs) sufficient time to make the necessary IT
programming changes after the new National Registry system is
available.

DATES: Comments must be received on or before May 24, 2021.

ADDRESSES: You may submit comments identified by Docket Number FMCSA-
2018-0152 using any of the following methods:
     Federal eRulemaking Portal: http://www.regulations.gov.
Follow the online instructions for submitting comments.
     Mail: Dockets Operations, U.S. Department of
Transportation, 1200 New Jersey Avenue SE, West Building, Ground Floor,
Room W12-140, Washington, DC 20590-0001.
     Hand Delivery or Courier: Dockets Operations, West
Building, Ground Floor, Room W12-140, 1200 New Jersey Avenue SE,
Washington, DC 20590-0001, between 9 a.m. and 5 p.m. ET, Monday through
Friday, except Federal holidays. To be sure someone is there to help
you, please call<PHONE_NUMBER> or<PHONE_NUMBER> before visiting
Dockets Operations.
     Fax:<PHONE_NUMBER>.
    To avoid duplication, please use only one of these four methods.
See the ``Submitting Comments'' portion of the SUPPLEMENTARY
INFORMATION section for instructions on submitting comments.

FOR FURTHER INFORMATION CONTACT: Ms. Christine A. Hydock, Chief,
Medical Programs Division, Federal Motor Carrier Safety Administration,
1200 New Jersey Avenue SE, Washington, DC 20590-0001,<PHONE_NUMBER>,
<EMAIL_ADDRESS>If you have questions on viewing or submitting
material to the docket, contact Dockets Operations,<PHONE_NUMBER>.

SUPPLEMENTARY INFORMATION:
    FMCSA organizes this supplemental notice of proposed rulemaking
(SNPRM) as follows:

I. Public Participation and Request for Comments
    A. Submitting Comments
    B. Viewing Comments and Documents
    C. Privacy Act
II. Executive Summary
III. Legal Basis
    A. Authority Over Drivers Affected Drivers Required To Obtain a
Medical Examiners Certificate (MEC)
    B. Authority To Regulate State CDL Programs
    C. Authority To Require Reporting by MEs
IV. Background
V. Discussion of Proposed Rulemaking
VI. International Impacts
VII. Section-by-Section Analysis
VIII. Regulatory Analyses
    A. E.O. 12866 (Regulatory Planning and Review), E.O. 13563
(Improving Regulation and Regulatory Review), and DOT Regulatory
Policies and Procedures
    B. Congressional Review Act
    C. Regulatory Flexibility Act
    D. Assistance for Small Entities
    E. Unfunded Mandates Reform Act of 1995
    F. Paperwork Reduction Act
    G. E.O. 13132 (Federalism)
    H. Privacy
    I. E.O. 13175 (Indian Tribal Governments)
    J. National Environmental Policy Act of 1969

I. Public Participation and Request for Comments

A. Submitting Comments

    If you submit a comment, please include the docket number for this
SNPRM (FMCSA-2018-0152), indicate the specific section of this document
to which your comment applies, and provide a reason for each suggestion
or recommendation. You may submit your comments and material online or
by fax, mail, or hand delivery, but please use only one of these means.
FMCSA recommends that you include your name and a mailing address, an
email address, or a phone number in the body of your document so FMCSA
can contact you if there are questions regarding your submission.
    To submit your comment online, go to https://www.regulations.gov/docket/FMCSA-2018-0152/document, click on this SNPRM, click
``Comment,'' and type your comment into the text box on the following
screen.
    If you submit your comments by mail or hand delivery, submit them
in an unbound format, no larger than 8\1/2\ by 11 inches, suitable for
copying and electronic filing. If you submit comments by mail and would
like to know that they reached the facility, please enclose a stamped,
self-addressed postcard or envelope.
    Confidential business information (CBI) is commercial or financial
information that is both customarily and actually treated as private by
its owner. Under the Freedom of Information Act (5 U.S.C. 552), CBI is
exempt from public disclosure. If your comments responsive to the SNPRM
contain commercial or financial information that is customarily treated
as private, that you actually treat as private, and that is relevant or
responsive to the SNPRM, it is important that you clearly designate the
submitted comments as CBI. Please mark each page of your submission
that constitutes CBI as ``PROPIN'' to indicate it contains proprietary
information. FMCSA will treat such marked submissions as confidential
under the Freedom of Information Act, and they will not be placed in
the public docket of the SNPRM. Submissions containing CBI should be
sent to Mr. Brian Dahlin, Chief, Regulatory Analysis Division, Office
of Policy, Federal Motor Carrier Safety Administration, 1200 New Jersey
Avenue SE, Washington, DC 20590-0001. Any comments FMCSA receives not
specifically designated as CBI will be placed in the public docket for
this rulemaking.
    FMCSA will consider all comments and material received during the
comment period.

B. Viewing Comments and Documents

    To view any documents mentioned as being available in the docket,
go to https://www.regulations.gov/docket/FMCSA-2018-0152/document and
choose the document to review. To view comments, click this SNPRM, and
click ``Browse Comments.'' If you do not have access to the internet,
you may view the docket online by visiting Dockets Operations in Room
W12-140 on the ground floor of the DOT West Building, 1200 New Jersey
Avenue SE, Washington, DC 20590-0001, between 9 a.m. and 5 p.m., Monday
through Friday, except Federal holidays. To be sure someone is there to
help you, please call<PHONE_NUMBER> or<PHONE_NUMBER> before visiting
Dockets Operations.

C. Privacy Act

    DOT solicits comments from the public to better inform its
rulemaking process, in accordance with 5 U.S.C. 553(c). DOT posts these
comments, without edit, including any personal information the
commenter provides, to www.regulations.gov, as described in the system
of records notice (DOT/ALL 14--Federal Docket Management System
(FDMS)), which can be reviewed at www.transportation.gov/privacy.

II. Executive Summary

    FMCSA's proposes an adjustment in the compliance date from June 22,
2021, to June 23, 2025, for several provisions in the Medical
Examiner's Certification Integration final rule (80 FR 22790, Apr. 23,
2015). Specifically, the Agency proposes to postpone, to June 23, 2025,
the provisions for: (1) FMCSA to electronically transmit, from the
National Registry to the SDLAs, driver identification information,
examination results, and restriction information from examinations
performed for holders of commercial learner's permits (CLPs) or
commercial driver's licenses (CDLs) (interstate and intrastate); (2)
FMCSA to electronically transmit to the SDLAs medical variance
information for all commercial motor vehicle (CMV) drivers; (3) SDLAs
to post on the Commercial Driver's License Information System (CDLIS)
driver record the driver identification, examination results, and
restriction information received electronically from FMCSA; and (4)
motor carriers to no longer be required to verify that CLP/

CDL drivers were certified by a certified medical examiner (ME) listed
on the National Registry.
    The compliance date for these provisions was postponed previously
from June 22, 2018, to June 22, 2021, by an interim final rule (83 FR
28774). This SNPRM identifies the regulations adopted in the IFR that
FMCSA now proposes to amend to include a compliance date generally of
June 23, 2025.

III. Legal Basis for the Rulemaking

    The legal basis of the 2015 final rule, set out at 80 FR 22791-
22792, also serves as the legal basis for this rule. Brief summaries of
the relevant legal bases for the actions taken in this rulemaking are
set out below.

A. Authority Over Drivers Affected; Drivers Required To Obtain a
Medical Examiners Certificate (MEC)

    FMCSA is required by statute to establish standards for the
physical qualifications of drivers who operate CMVs in interstate
commerce for non-excepted industries (49 U.S.C. 31136(a)(3) and
31502(b)). Subject to certain limited exceptions,\1\ FMCSA has
fulfilled the statutory mandate by establishing physical qualification
standards for all drivers covered by these provisions (49 CFR
391.11(b)(4)). Such drivers must obtain, from an ME, a certification
indicating that the driver is physically qualified to drive a CMV (49
CFR 391.41(a), 391.43(g) and (h)). FMCSA is also required to ensure
that the operation of a CMV does not have a deleterious effect on the
physical condition of drivers (49 U.S.C. 31136(a)(4)).
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    \1\ See 49 CFR 390.3(f) and 391.2.
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Drivers Required To Obtain a CDL
    The authority for FMCSA to require an operator of a CMV to obtain a
CDL is based on 49 U.S.C. 31302, and the authority to set minimum
standards for the testing and fitness of such operators rests on 49
U.S.C. 31305.

B. Authority To Regulate State CDL Programs

    Under 49 U.S.C. 31311 and 31314, FMCSA has authority to prescribe
procedures and requirements the States must follow when issuing CDLs
(see, generally, 49 CFR parts 383 and 384). In particular, under
section 31314, in order to avoid loss of certain Federal-aid highway
funds otherwise apportioned under 23 U.S.C. 104(b), each State must
comply with the requirement in 49 U.S.C. 31311(a)(1) to adopt and carry
out a program for testing and ensuring the fitness of individuals to
operate CMVs consistent with the minimum standards prescribed by FMCSA
under 49 U.S.C. 31305(a) (see also 49 CFR 384.201).

C. Authority To Require Reporting by MEs

    FMCSA has authority under 49 U.S.C. 31133(a)(8) and 31149(c)(1)(E)
to require MEs on the National Registry to obtain information from CMV
drivers regarding their physical health, to record and retain the
results of the physical examinations of CMV drivers, and to require
frequent reporting of the information contained on the MECs they issue.
Section 31133(a)(8) gives the Agency broad administrative powers
(specifically ``to prescribe recordkeeping and reporting
requirements'') to assist in ensuring motor carrier safety and driver
health (Sen. Report No. 98-424 at 9 (May 2, 1984)). Section
31149(c)(1)(E) authorizes a requirement for electronic reporting of
certain specific information by MEs, including applicant names and
numerical identifiers as determined by the FMCSA Administrator. Section
31149(c)(1)(E) sets minimum monthly reporting requirements for MEs and
does not preclude the exercise by the Agency of its broad authority
under section 31133(a)(8) to require more frequent and more inclusive
reports.\2\ In addition to the general rulemaking authority in 49
U.S.C. 31136(a), the Secretary of Transportation is specifically
authorized by section 31149(e) to ``issue such regulations as may be
necessary to carry out this section.''
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    \2\ The provisions of section 31149(c)(1)(E) have been amended
by section 32302(c)(1)(A) of Moving Ahead for Progress in the 21st
Century, Public Law 112-141, 126 Stat. 405 (July 6, 2012).
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    Authority to implement these various statutory provisions has been
delegated to the Administrator of FMCSA (49 CFR 1.87(f)).

IV. Background

    The history of the regulations that FMCSA adopted in 2015 and the
developments leading to the 2018 interim final rule are set out in the
interim final rule, at 83 FR at 28776. The Agency also stated that it
might further amend the provisions amended by the interim final rule
(83 FR at 28777). Since issuing the 2015 final rule, there have been
ongoing challenges associated with launching a new National Registry IT
system. Among those challenges was an unsuccessful attempt by an
intruder to compromise the National Registry website in December 2017.
Although no personal information was exposed, FMCSA took the National
Registry system offline until mid-2018 to ensure it was secure. This
action and other related actions affected the schedule for implementing
the provisions of the 2015 final rule and resulted in the postponement
of the compliance date by the 2018 IFR.
    Since publication of the 2018 IFR, FMCSA experienced additional
setbacks in its efforts to launch the National Registry replacement
system that require an additional delay. The Agency attempted to launch
the first stage of the replacement system in May 2019, but the system's
performance capabilities fell short of what was needed to implement the
2015 final rule. After a detailed analysis of the functional
requirements, the Agency issued a request for proposals to obtain the
services of a new contractor and selected a vendor in December 2020 to
develop the replacement system by early 2022. The work would include
delivery of technical specifications to the SDLAs for use in
implementing changes to their respective systems.
    FMCSA anticipates that the SDLAs will need three years following
the completion and release of the new IT system and its technical
specifications to develop and implement those changes. This was the
same amount of time allowed for this activity in the 2015 final rule
and the 2018 IFR. In light of these challenges, FMCSA intends to
finalize the extended compliance date for the affected regulations by
issuing a final rule before June 22, 2021.

V. Discussion of Proposed Rulemaking

    The proposal to delay the compliance date means that through June
22, 2025:
    [cir] Certified MEs would continue issuing MECs to qualified CLP/
CDL applicants/holders;
    [cir] CLP/CDL applicants/holders would continue to provide the SDLA
a copy of their MEC;
    [cir] Motor carriers would continue verifying that drivers were
certified by an ME listed on the National Registry; and
    [cir] SDLAs would continue processing paper copies of MECs they
receive from CLP/CDL applicants/holders.
    In the 2018 IFR, FMCSA did not delay the requirement for MEs
performing physical examinations of CMV drivers to report results of
all CMV drivers' physical examinations (including the results of
examinations where the driver was found not to be qualified) to FMCSA
by midnight (local time) of the next calendar day following the
examination. MEs' submission of reports by midnight (local time) of the
next calendar day following the

examination also allows FMCSA to begin electronically transmitting this
important safety data to each State when that State is ready to receive
the information, thereby providing States additional flexibility to
implement the provisions of this rulemaking at their own pace. FMCSA
believes some States may be prepared to receive this data ahead of the
June 23, 2025, date to take advantage of the efficiencies and added
security the new process affords.
    When FMCSA is ready to begin electronically transmitting MEC
information from the National Registry, and an SDLA is ready to begin
receiving this information electronically from the National Registry,
FMCSA will work with the SDLA involved on the most appropriate means to
use such electronic transmissions. FMCSA states that, under such
circumstances, electronic transmission of the MEC information may be an
acceptable means for CDL and CLP holders to satisfy the requirement of
providing the MEC to the SDLA. In order to avoid any uncertainty,
provisions were added by the IFR to the appropriate regulations stating
that, in case of a conflict between the medical certification
information provided electronically by FMCSA and information on a paper
version of the MEC, the electronic record will be controlling. On the
other hand, the provisions in the regulations governing the handling of
these matters under the current procedures will remain in effect
through June 22, 2025, to ensure continued compliance by SDLAs and
other affected stakeholders until the electronic transmission of MEC
information is operational for all SDLAs.
    If some SDLAs begin receiving MEC information from FMCSA prior to
June 23, 2025, FMCSA and the SDLAs will make every effort to advise all
stakeholders when such transmission begins. MEs listed on the National
Registry, employers, and enforcement personnel (both State and Federal)
will need to be made fully aware that some SDLAs may be following
procedures different from the remaining States.
    In 49 CFR parts 383, 384, and 391, FMCSA proposes to change the
compliance dates of the rules as shown in the table below.

                          Table 1--Date Changes
------------------------------------------------------------------------
  Section to be changed (in    Current compliance      New compliance
       Title 49 CFR):                dates:                dates:
------------------------------------------------------------------------
383.71(h)(1)(i).............  June 22, 2021.......  June 23, 2025.
383.71(h)(1)(ii)............  June 22, 2021.......  June 23, 2025.
383.71(h)(3)(i).............  June 22, 2021.......  June 23, 2025.
383.71(h)(3)(ii)............  June 22, 2021.......  June 23, 2025.
383.73(a)(2)(vii)(A)........  June 22, 2021.......  June 23, 2025.
383.73(a)(2)(vii)(B)........  June 22, 2021.......  June 23, 2025.
383.73(b)(5)(i).............  June 22, 2021.......  June 23, 2025.
383.73(b)(5)(ii)............  June 22, 2021.......  June 23, 2025.
383.73(o)(1)(i).............  June 22, 2021.......  June 23, 2025.
383.73(o)(1)(ii)............  June 22, 2021.......  June 23, 2025.
383.73(o)(2)(i).............  June 22, 2021.......  June 23, 2025.
383.73(o)(2)(ii)............  June 22, 2021.......  June 23, 2025.
383.73(o)(3)(i).............  June 22, 2021.......  June 23, 2025.
383.73(o)(3)(ii)............  June 22, 2021.......  June 23, 2025.
383.73(o)(4)(i)(A)(1).......  June 22, 2021.......  June 23, 2025.
383.73(o)(4)(i)(A)(2).......  June 22, 2021.......  June 23, 2025.
383.73(o)(4)(ii)(A).........  June 22, 2021.......  June 23, 2025.
383.73(o)(4)(ii)(B).........  June 22, 2021.......  June 23, 2025.
384.301(i)..................  June 22, 2021.......  June 23, 2025.
391.23(m)(2)(i)(B)(1).......  June 21, 2021.......  June 22, 2025.
391.23(m)(2)(i)(C)..........  June 21, 2021.......  June 22, 2025.
391.23(m)(3)(i)(B)(1).......  June 21, 2021.......  June 22, 2025.
391.23(m)(3)(i)(C)..........  June 21, 2021.......  June 22, 2025.
391.41(a)(2)(i)(A)..........  June 21, 2021.......  June 22, 2025.
391.41(a)(2)(i)(B)..........  June 22, 2021.......  June 23, 2025.
391.41(a)(2)(ii)............  June 21, 2021.......  June 22, 2025.
391.43(g)(2)(i).............  June 22, 2021.......  June 23, 2025.
391.43(g)(2)(ii)............  June 22, 2021.......  June 23, 2025.
391.43(g)(3)................  June 22, 2021.......  June 23, 2025.
391.45(g)...................  June 22, 2021.......  June 23, 2025.
391.51(b)(7)(ii)............  June 21, 2021.......  June 22, 2025.
391.51(b)(9)(ii)............  June 21, 2021.......  June 22, 2025.
------------------------------------------------------------------------

FMCSA is providing a period of 30 days for public comment regarding its
intentions to finalize the compliance dates for the regulations listed
above. FMCSA is particularly interested in input on whether the three-
year period for SDLA implementation is appropriate, or could even be
reduced. At the close of the comment period and after consideration of
the comments received, the Agency plans to publish the necessary final
rule with the extended compliance dates as soon as feasible.

VI. International Impacts

    Motor carriers and drivers are subject to the laws and regulations
of the countries in which they operate, unless an international
agreement states otherwise. Drivers and carriers should be aware of the
regulatory differences among nations.

VII. Section-by-Section Analysis

    This section-by-section analysis describes the proposed changes in
numerical order.

Parts 383, 384, and 391

    In parts 383, 384, and 391, FMCSA proposes new dates as stated in
Table 1 above. FMCSA does not propose any other changes in today's
SNPRM.

VIII. Regulatory Analyses

A. Executive Order (E.O.) 12866 (Regulatory Planning and Review), E.O.
13563 (Improving Regulation and Regulatory Review), and DOT Regulatory
Policies and Procedures

    FMCSA has considered the impact of this SNPRM under E.O. 12866 (58
FR 51735, Oct. 4, 1993), Regulatory Planning and Review, E.O. 13563 (76
FR 3821, Jan. 21, 2011), Improving Regulation and Regulatory Review,
and DOT's regulatory policies and procedures. The Office of Information
and Regulatory Affairs (OIRA) determined that this SNPRM is not a
significant regulatory action under section 3(f) of E.O. 12866, as
supplemented by E.O. 13563, and does not require an assessment of
potential costs and benefits under section 6(a)(3) of that Order.
Accordingly, OMB has not reviewed it under these Orders.
    The Medical Examiner's Certification Integration Final Rule,
published April 23, 2015 (80 FR 22790), amended the FMCSRs to establish
a streamlined process for SDLAs to receive CMV driver physical
examination results from the MEs, via the National Registry. The 2015
final rule estimated that the National Registry would be able to
receive and transmit this information on a daily basis by June 22,
2018, and established compliance dates for MEs, motor carriers, FMCSA,
and the States accordingly. This proposed rule would delay until June
23, 2025, the compliance date requiring (1) FMCSA to electronically
transmit from the National Registry to the SDLAs driver identification
information, examination results, and restriction information from
examinations performed for holders of CLPs/CDLs (interstate and
intrastate); (2) FMCSA to electronically transmit to the SDLAs medical
variance information for all CMV drivers; (3) SDLAs to post driver
identification, examination results, and restriction information
received electronically from FMCSA; and (4) that motor carriers no
longer would need to verify that their drivers holding CLPs or CDLs
were certified by an ME listed on the National Registry. This action is
being taken to ensure that SDLAs have sufficient time to make the
necessary IT programming changes. Although this rule would impact the
responsibilities of MEs, CMV drivers, motor carriers, SDLAs, and FMCSA,
it is not expected to generate any economic costs or benefits.
    The 2015 final rule accounted for costs associated with system
development and implementation, and benefits associated with
streamlined processes and reduced paperwork. These costs and benefits
(anticipated under the 2018 IFR to be realized on the June 22, 2021,
compliance date) would not be realized on June 22, 2021 under this
SNPRM. Therefore, the baseline against which to evaluate the impacts of
this SNPRM is that the necessary systems will not be ready on June 22,
2021, and will instead be ready on June 23, 2025. This rule aligns the
compliance date with the date when the systems will be ready and thus,
when the costs and benefits estimated in the 2015 final rule can be
realized.

B. Congressional Review Act

    Pursuant to the Congressional Review Act (5 U.S.C. 801-808), OIRA
designated this rule as not a ``major rule.'' \3\
---------------------------------------------------------------------------

    \3\ A ``major rule'' means any rule that the Office of
Management and Budget finds has resulted in or is likely to result
in (a) an annual effect on the economy of $100 million or more; (b)
a major increase in costs or prices for consumers, individual
industries, geographic regions, Federal, State, or local government
agencies; or (c) significant adverse effects on competition,
employment, investment, productivity, innovation, or on the ability
of United States-based enterprises to compete with foreign-based
enterprises in domestic and export markets (49 CFR 389.3).
---------------------------------------------------------------------------

C. Regulatory Flexibility Act

    The Regulatory Flexibility Act (5 U.S.C. 601 et seq.) (RFA), as
amended by the Small Business Regulatory Enforcement Fairness Act of
1996 (SBREFA),\4\ requires Federal agencies to consider the effects of
the regulatory action on small business and other small entities and to
minimize any significant economic impact. The term ``small entities''
comprises small businesses and not-for-profit organizations that are
independently owned and operated and are not dominant in their fields,
and governmental jurisdictions with populations of less than 50,000 (5
U.S.C. 601(6)). Accordingly, DOT policy requires an analysis of the
impact of all regulations on small entities, and mandates that agencies
strive to lessen any adverse effects on these businesses.
---------------------------------------------------------------------------

    \4\ Public Law 104-121, 110 Stat. 857, (Mar. 29, 1996).
---------------------------------------------------------------------------

    FMCSA considers all of the 70,803 certified MEs who are certified
and listed on the National Registry to be small entities.\5\ While this
may be a substantial number of small entities, this rule does not
impose any new requirements on MEs. MEs are already required, under the
2015 final rule, to report results of all CMV drivers' physical
examinations (including the results of examinations where the driver
was found not to be qualified) to FMCSA by midnight (local time) of the
next calendar day following the examination. In addition, this rule
does not result in additional costs or benefits, nor does it inhibit
the realization of the cost savings identified in the 2015 final rule.
The unanticipated National Registry outage and subsequent IT
development issues have led to delays in the development of the process
for the electronic transmission of MEC information and medical
variances, and the final specifications have not yet been published and
released to the SDLAs. This rule aligns the compliance date with the
date when the systems will be ready and thus, when the costs and
benefits estimated in the 2015 final rule can be realized. As such,
this rule will not result in a significant economic impact on the MEs.
---------------------------------------------------------------------------

    \5\ 70,803 certified MEs listed on the National Registry as of
May 14, 2020.
---------------------------------------------------------------------------

    CMV drivers are not considered small entities because they do not
meet the definition of a small entity in Section 601 of the RFA.
Specifically, CMV drivers are considered neither a small business under
Section 601(3) of the RFA, nor are they considered a small organization
under Section 601(4) of the RFA.
    All motor carriers would likely be impacted by this rule; however,
the rule would impose no new obligations. FMCSA does not know how many
of these motor carriers would be considered ``small.'' The U.S. Small
Business Administration (SBA) defines the size standards used to
classify entities as small. SBA establishes separate standards for each
industry, as defined by the North American Industry Classification
System (NAICS).\6\ This rule could affect many different industry
sectors; for example, the transportation sector (e.g., general freight
trucking industry group (4841) and the specialized freight trucking
industry group (4842)), the agricultural sector (11), and the
construction sector (23). Industry groups within these sectors have
size standards based on the number of employees, or on the amount of
annual revenue. Regardless of how many small entities are in this
population, this rule as proposed is not expected to generate any
economic costs or benefits. Therefore, FMCSA estimates that, while this
rule as proposed may affect a substantial number of small entities, it
would not have a significant impact on those entities.
---------------------------------------------------------------------------

    \6\ Executive Office of the President, Office of Management and
Budget (OMB). ``North American Industry Classification System.''
2017. Available at: https://www.census.gov/eos/www/naics/2017NAICS/2017_NAICS_Manual.pdf (accessed March 20, 2018).
---------------------------------------------------------------------------

    This rule also directly affects the States through their SDLAs.
Under the

standards of the RFA, as amended by the SBREFA, the States are not
small entities. States are not considered small entities because they
do not meet the definition of a small entity in Section 601 of the RFA.
Specifically, States are not considered small governmental
jurisdictions under Section 601(5) of the RFA, both because State
government is not included among the various levels of government
listed in Section 601(5), and because, even if this were the case, no
State, including the District of Columbia, has a population of less
than 50,000, which is the criterion for a governmental jurisdiction to
be considered small under Section 601(5) of the RFA.
    Consequently, I hereby certify that this action will not have a
significant economic impact on a substantial number of small entities.

D. Assistance for Small Entities

    In accordance with section 213(a) of the Small Business Regulatory
Enforcement Fairness Act of 1996,\7\ FMCSA wants to assist small
entities in understanding this SNPRM so they can better evaluate its
effects on themselves and participate in the rulemaking initiative. If
the SNPRM would affect your small business, organization, or
governmental jurisdiction and you have questions concerning its
provisions or options for compliance; please consult the person listed
under FOR FURTHER INFORMATION CONTACT.
---------------------------------------------------------------------------

    \7\ Public Law 104-121, 110 Stat. 857, (Mar. 29, 1996).
---------------------------------------------------------------------------

    Small businesses may send comments on the actions of Federal
employees who enforce or otherwise determine compliance with Federal
regulations to the Small Business Administration's Small Business and
Agriculture Regulatory Enforcement Ombudsman and the Regional Small
Business Regulatory Fairness Boards. The Ombudsman evaluates these
actions annually and rates each agency's responsiveness to small
business. If you wish to comment on actions by employees of FMCSA, call
1-888-REG-FAIR (1-888-734-3247). DOT has a policy regarding the rights
of small entities to regulatory enforcement fairness and an explicit
policy against retaliation for exercising these rights.

E. Unfunded Mandates Reform Act of 1995

    The Unfunded Mandates Reform Act of 1995 (2 U.S.C. 1531-1538)
requires Federal agencies to assess the effects of their discretionary
regulatory actions. The Act addresses actions that may result in the
expenditure by a State, local, or Tribal government, in the aggregate,
or by the private sector of $168 million (which is the value equivalent
of $100 million in 1995, adjusted for inflation to 2019 levels) or more
in any 1 year. Though this SNPRM would not result in such an
expenditure, the Agency does discuss the effects of this rule elsewhere
in this preamble.

F. Paperwork Reduction Act

    This SNPRM contains no new information collection requirements
under the Paperwork Reduction Act of 1995 (44 U.S.C. 3501-3520).

G. E.O. 13132 (Federalism)

    A rule has implications for federalism under section 1(a) of E.O.
13132 if it has ``substantial direct effects on the States, on the
relationship between the national government and the States, or on the
distribution of power and responsibilities among the various levels of
government.''
    FMCSA has determined that this SNPRM would not have substantial
direct costs on or for States, nor would it limit the policymaking
discretion of States. Nothing in this document preempts any State law
or regulation. Therefore, this SNPRM does not have sufficient
federalism implications to warrant the preparation of a Federalism
Impact Statement.

H. Privacy

    The Consolidated Appropriations Act, 2005,\8\ requires the Agency
to assess the privacy impact of a regulation that will affect the
privacy of individuals. This SNPRM would not require the collection of
personally identifiable information (PII).
---------------------------------------------------------------------------

    \8\ Public Law 108-447, 118 Stat. 2809, 3268, note following 5
U.S.C. 552a (Dec. 4, 2014).
---------------------------------------------------------------------------

    The Privacy Act (5 U.S.C. 552a) applies only to Federal agencies
and any non-Federal agency that receives records contained in a system
of records from a Federal agency for use in a matching program.
    The E-Government Act of 2002,\9\ requires Federal agencies to
conduct a PIA for new or substantially changed technology that
collects, maintains, or disseminates information in an identifiable
form.
---------------------------------------------------------------------------

    \9\ Public Law 107-347, sec. 208, 116 Stat. 2899, 2921 (Dec. 17,
2002).
---------------------------------------------------------------------------

    No new or substantially changed technology would collect, maintain,
or disseminate information as a result of this rule. Accordingly, FMCSA
has not conducted a PIA.

I. E.O. 13175 (Indian Tribal Governments)

    This rule does not have Tribal implications under E.O. 13175,
Consultation and Coordination with Indian Tribal Governments, because
it does not have a substantial direct effect on one or more Indian
Tribes, on the relationship between the Federal Government and Indian
Tribes, or on the distribution of power and responsibilities between
the Federal Government and Indian Tribes.

J. National Environmental Policy Act of 1969

    FMCSA analyzed this SNPRM for the purpose of the National
Environmental Policy Act of 1969 (NEPA) (42 U.S.C. 4321 et seq.) and
determined this action is categorically excluded from further analysis
and documentation in an environmental assessment or environmental
impact statement under FMCSA Order 5610.1 (69 FR 9680), Appendix 2,
paragraph (s)(7) and paragraph (t)(2). The Categorical Exclusion (CE)
in paragraph (s)(7) covers requirements for State-issued commercial
license documentation and paragraph (t)(2) addresses regulations that
ensure States have the appropriate information systems and procedures
concerning CDL qualifications. The content in this interim final rule
is covered by these CEs and the final action does not have any effect
on the quality of the environment.

List of Subjects

49 CFR Part 383

    Administrative practice and procedure, Alcohol abuse, Drug abuse,
Highway safety, Motor carriers.

49 CFR Part 384

    Administrative practice and procedure, Alcohol abuse, Drug abuse,
Highway safety, Motor carriers.

49 CFR Part 391

    Alcohol abuse, Drug abuse, Drug testing, Highway safety, Motor
carriers, Reporting and recordkeeping requirements, Safety,
Transportation.

    In consideration of the foregoing, FMCSA proposes to amend 49 CFR
chapter III, parts 383, 384, and 391 to read as follows:

PART 383--COMMERCIAL DRIVER'S LICENSE STANDARDS; REQUIREMENTS AND
PENALTIES

0
1. The authority citation for part 383 continues to read as follows:

    Authority: 49 U.S.C. 521, 31136, 31301 et seq., and 31502; secs.
214 and 215 of Pub. L.

106-159, 113 Stat. 1748, 1766, 1767; sec. 1012(b) of Pub. L. 107-56,
115 Stat. 272, 297, sec. 4140 of Pub. L. 109-59, 119 Stat. 1144,
1746; sec. 32934 of Pub. L. 112-141, 126 Stat. 405, 830; secs. 5401
and 7208 of Pub. L. 114-94, 129 Stat. 1312, 1546, 1593; and 49 CFR
1.87.

0
2. Amend Sec.  383.71 by revising paragraphs (h)(1) and (3) to read as
follows:

Sec.  383.71  Driver application and certification procedures.

* * * * *
    (h) * * *
    (1) New CLP and CDL applicants. (i) Before June 23, 2025, a new CLP
or CDL applicant who certifies that he/she will operate CMVs in non-
excepted, interstate commerce must provide the State with an original
or copy (as required by the State) of a medical examiner's certificate
prepared by a medical examiner, as defined in 49 CFR 390.5, and the
State will post a medical qualifications status of ``certified'' on the
CDLIS driver record for the driver;
    (ii) On or after June 23, 2025, a new CLP or CDL applicant who
certifies that he/she will operate CMVs in non-excepted, interstate
commerce must be medically examined and certified in accordance with 49
CFR 391.43 as medically qualified to operate a CMV by a medical
examiner, as defined in 49 CFR 390.5. Upon receiving an electronic copy
of the medical examiner's certificate from FMCSA, the State will post a
medical qualifications status of ``certified'' on the CDLIS driver
record for the driver;
* * * * *
    (3) Maintaining the medical certification status of ``certified.''
(i) Before June 23, 2025, in order to maintain a medical certification
status of ``certified,'' a CLP or CDL holder who certifies that he/she
will operate CMVs in non-excepted, interstate commerce must provide the
State with an original or copy (as required by the State) of each
subsequently issued medical examiner's certificate;
    (ii) On or after June 23, 2025, in order to maintain a medical
certification status of ``certified,'' a CLP or CDL holder who
certifies that he/she will operate CMVs in non-excepted, interstate
commerce must continue to be medically examined and certified in
accordance with 49 CFR 391.43 as physically qualified to operate a
commercial motor vehicle by a medical examiner, as defined in 49 CFR
390.5. FMCSA will provide the State with an electronic copy of the
medical examiner's certificate information for all subsequent medical
examinations in which the driver has been deemed qualified.
0
3. Amend Sec.  383.73 by revising paragraphs (a)(2)(vii), (b)(5),
(o)(1)(i) introductory text, (o)(1)(ii) introductory text, (o)(2),
(o)(3), (o)(4)(i)(A), and (o)(4)(ii) to read as follows:

Sec.  383.73  State procedures.

    (a) * * *
    (2) * * *
    (vii)(A) Before June 23, 2025, for drivers who certified their type
of driving according to Sec.  383.71(b)(1)(i) (non-excepted interstate)
and, if the CLP applicant submits a current medical examiner's
certificate, date-stamp the medical examiner's certificate, and post
all required information from the medical examiner's certificate to the
CDLIS driver record in accordance with paragraph (o) of this section.
    (B) On or after June 23, 2025, for drivers who certified their type
of driving according to Sec.  383.71(b)(1)(i) (non-excepted interstate)
and, if FMCSA provides current medical examiner's certificate
information electronically, post all required information matching the
medical examiner's certificate to the CDLIS driver record in accordance
with paragraph (o) of this section.
    (b) * * *
    (5)(i) Before June 23, 2025, for drivers who certified their type
of driving according to Sec.  383.71(b)(1)(i) (non-excepted interstate)
and, if the CDL holder submits a current medical examiner's
certificate, date-stamp the medical examiner's certificate and post all
required information from the medical examiner's certificate to the
CDLIS driver record in accordance with paragraph (o) of this section.
    (ii) On or after June 23, 2025, for drivers who certified their
type of driving according to Sec.  383.71(b)(1)(i) (non-excepted
interstate) and, if FMCSA provides current medical examiner's
certificate information electronically, post all required information
matching the medical examiner's certificate to the CDLIS driver record
in accordance with paragraph (o) of this section.
* * * * *
    (o) * * *
    (1)(i) Status of CLP or CDL holder. Before June 23, 2025, for each
operator of a commercial motor vehicle required to have a CLP or CDL,
the current licensing State must:
* * * * *
    (ii) Status of CLP or CDL holder. On or after June 23, 2025, for
each operator of a commercial motor vehicle required to have a CLP or
CDL, the current licensing State must:
* * * * *
    (2) Status update. (i) Before June 23, 2025, the State must, within
10 calendar days of the driver's medical examiner's certificate or
medical variance expiring, the medical variance being rescinded or the
medical examiner's certificate being voided by FMCSA, update the
medical certification status of that driver as ``not certified.''
    (ii) On or after June 23, 2025, the State must, within 10 calendar
days of the driver's medical examiner's certificate or medical variance
expiring, the medical examiner's certificate becoming invalid, the
medical variance being rescinded, or the medical examiner's certificate
being voided by FMCSA, update the medical certification status of that
driver as ``not certified.''
    (3) Variance update. (i) Before June 23, 2025, within 10 calendar
days of receiving information from FMCSA regarding issuance or renewal
of a medical variance for a driver, the State must update the CDLIS
driver record to include the medical variance information provided by
FMCSA.
    (ii) On or after June 23, 2025, within 1 business day of
electronically receiving medical variance information from FMCSA
regarding the issuance or renewal of a medical variance for a driver,
the State must update the CDLIS driver record to include the medical
variance information provided by FMCSA.
    (4) * * *
    (i) * * *
    (A)(1) Before June 23, 2025, notify the CLP or CDL holder of his/
her CLP or CDL ``not-certified'' medical certification status and that
the CMV privileges will be removed from the CLP or CDL unless the
driver submits a current medical examiner's certificate and/or medical
variance, or changes his/her self-certification to driving only in
excepted or intrastate commerce (if permitted by the State);
    (2) On or after June 23, 2025, notify the CLP or CDL holder of his/
her CLP or CDL ``not-certified'' medical certification status and that
the CMV privileges will be removed from the CLP or CDL unless the
driver has been medically examined and certified in accordance with 49
CFR 391.43 as physically qualified to operate a commercial motor
vehicle by a medical examiner, as defined in 49 CFR 390.5, or the
driver changes his/her self-certification to driving only in excepted
or intrastate commerce (if permitted by the State).
* * * * *
    (ii)(A) Before June 23, 2025, if a driver fails to provide the
State with the certification contained in Sec.  383.71(b)(1),

or a current medical examiner's certificate if the driver self-
certifies according to Sec.  383.71(b)(1)(i) that he/she is operating
in non-excepted interstate commerce as required by Sec.  383.71(h), the
State must mark that CDLIS driver record as ``not-certified'' and
initiate a CLP or CDL downgrade following State procedures in
accordance with paragraph (o)(4)(i)(B) of this section.
    (B) On or after June 23, 2025, if a driver fails to provide the
State with the certification contained in Sec.  383.71(b)(1), or, if
the driver self-certifies according to Sec.  383.71(b)(1)(i) that he/
she is operating in non-excepted interstate commerce as required by
Sec.  383.71(h) and the information required by paragraph (o)(2)(ii) of
this section is not received and posted, the State must mark that CDLIS
driver record as ``not-certified'' and initiate a CLP or CDL downgrade
following State procedures in accordance with paragraph (o)(4)(i)(B) of
this section.
* * * * *

PART 384--STATE COMPLIANCE WITH COMMERCIAL DRIVER'S LICENSE PROGRAM

0
4. The authority citation for part 384 continues to read as follows:

    Authority: 49 U.S.C. 31136, 31301, et seq., and 31502; secs. 103
and 215 of Pub. L. 106-59, 113 Stat. 1753, 1767; sec. 32934 of Pub.
L. 112-141, 126 Stat. 405, 830; secs. 5401 and 7208 of Pub. L. 114-
94, 129 Stat. 1312, 1546, 1593 and 49 CFR 1.87.

0
5. Amend Sec.  384.301 by revising paragraph (i) to read as follows:

Sec.  384.301  Substantial compliance-general requirements.

* * * * *
    (i) A State must come into substantial compliance with the
requirements of subpart B of this part and part 383 of this chapter in
effect as of June 22, 2015, as soon as practical, but, unless otherwise
specifically provided in this part, not later than June 23, 2025.
* * * * *

PART 391--QUALIFICATIONS OF DRIVERS AND LONGER COMBINATION VEHICLE
(LCV) DRIVER INSTRUCTORS

0
6. The authority citation for part 391 continues to read as follows:

    Authority: 49 U.S.C. 504, 508, 31133, 31136, 31149, and 31502;
sec. 4007(b), Pub. L. 102-240, 105 Stat. 1914, 2152; sec. 114, Pub.
L. 103-311, 108 Stat. 1673, 1677; sec. 215, Pub. L. 106-159, 113
Stat. 1748, 1767; sec. 32934, Pub. L. 112-141, 126 Stat. 405, 830;
secs. 5403 and 5524, Pub. L. 114-94, 129 Stat. 1312, 1548, 1560;
sec. 2, Pub. L. 115-105, 131 Stat. 2263; and 49 CFR 1.87.

0
7. Amend Sec.  391.23 by revising paragraphs (m)(2)(i)(B)(1) and
(m)(2)(i)(C), (m)(3)(i)(B)(1) and (m)(3)(i)(C), to read as follows:

Sec.  391.23  Investigation and inquiries.

* * * * *
    (m) * * *
    (2) * * *
    (i) * * *
    (B)(1) Beginning on May 21, 2014, and through June 22, 2025, that
the driver was certified by a medical examiner listed on the National
Registry of Certified Medical Examiners as of the date of medical
examiner's certificate issuance.
* * * * *
    (C) Exception. Beginning on January 30, 2015, and through June 22,
2025, if the driver provided the motor carrier with a copy of the
current medical examiner's certificate that was submitted to the State
in accordance with Sec.  383.73(b)(5) of this chapter, the motor
carrier may use a copy of that medical examiner's certificate as proof
of the driver's medical certification for up to 15 days after the date
it was issued.
* * * * *
    (3) * * *
    (i) * * *
    (B)(1) Through June 22, 2025, that the driver was certified by a
medical examiner listed on the National Registry of Certified Medical
Examiners as of the date of medical examiner's certificate issuance.
* * * * *
    (C) Through June 22, 2025, if the driver provided the motor carrier
with a copy of the current medical examiner's certificate that was
submitted to the State in accordance with Sec.  383.73(a)(2)(vii) of
this chapter, the motor carrier may use a copy of that medical
examiner's certificate as proof of the driver's medical certification
for up to 15 days after the date it was issued.
* * * * *
0
8. Amend Sec.  391.41 by revising paragraphs (a)(2)(i) and (ii), to
read as follows:

Sec.  391.41  Physical qualifications for drivers.

    (a) * * *
    (2) * * *
    (i)(A) Beginning on January 30, 2015 and through June 22, 2025, a
driver required to have a commercial driver's license under part 383 of
this chapter, and who submitted a current medical examiner's
certificate to the State in accordance with 49 CFR 383.71(h)
documenting that he or she meets the physical qualification
requirements of this part, no longer needs to carry on his or her
person the medical examiner's certificate specified at Sec.  391.43(h),
or a copy, for more than 15 days after the date it was issued as valid
proof of medical certification.
    (B) On or after June 23, 2025, a driver required to have a
commercial driver's license or a commercial learner's permit under 49
CFR part 383, and who has a current medical examiner's certificate
documenting that he or she meets the physical qualification
requirements of this part, no longer needs to carry on his or her
person the medical examiner's certificate specified at Sec.  391.43(h).
    (ii) Beginning on July 8, 2015, and through June 22, 2025, a driver
required to have a commercial learner's permit under part 383 of this
chapter, and who submitted a current medical examiner's certificate to
the State in accordance with Sec.  383.71(h) of this chapter
documenting that he or she meets the physical qualification
requirements of this part, no longer needs to carry on his or her
person the medical examiner's certificate specified at Sec.  391.43(h),
or a copy for more than 15 days after the date it was issued as valid
proof of medical certification.
* * * * *
0
9. Amend Sec.  391.43 by revising paragraphs (g)(2) and (3) to read as
follows:

Sec.  391.43  Medical examination; certificate of physical examination.

* * * * *
    (g) * * *
    (2)(i) Before June 23, 2025, if the medical examiner finds that the
person examined is physically qualified to operate a commercial motor
vehicle in accordance with Sec.  391.41(b), he or she must complete a
certificate in the form prescribed in paragraph (h) of this section and
furnish the original to the person who was examined. The examiner must
provide a copy to a prospective or current employing motor carrier who
requests it.
    (ii) On or after June 23, 2025, if the medical examiner identifies
that the person examined will not be operating a commercial motor
vehicle that requires a commercial driver's license or a commercial
learner's permit and finds that the driver is physically qualified to
operate a commercial motor vehicle in accordance with Sec.  391.41(b),
he or she must complete a certificate in the form prescribed in
paragraph (h) of this section and furnish the original to the person
who was examined. The examiner must provide a copy to a prospective or
current employing motor carrier who requests it.

    (3) On or after June 23, 2025, if the medical examiner finds that
the person examined is not physically qualified to operate a commercial
motor vehicle in accordance with Sec.  391.41(b), he or she must inform
the person examined that he or she is not physically qualified, and
that this information will be reported to FMCSA. All medical examiner's
certificates previously issued to the person are not valid and no
longer satisfy the requirements of Sec.  391.41(a).
* * * * *
0
10. Amend Sec.  391.45 by revising paragraph (g) to read as follows:

Sec.  391.45  Persons who must be medically examined and certified.

* * * * *
    (g) On or after June 23, 2025, any person found by a medical
examiner not to be physically qualified to operate a commercial motor
vehicle under the provisions of paragraph (g)(3) of Sec.  391.43.
0
11. Amend Sec.  391.51 by revising paragraphs (b)(7)(ii) and (b)(9)(ii)
to read as follows:

Sec.  391.51  General requirements for driver qualification files.

* * * * *
    (b) * * *
    (7) * * *
    (ii) Exception. For CDL holders, beginning January 30, 2012, if the
CDLIS motor vehicle record contains medical certification status
information, the motor carrier employer must meet this requirement by
obtaining the CDLIS motor vehicle record defined at Sec.  384.105 of
this chapter. That record must be obtained from the current licensing
State and placed in the driver qualification file. After January 30,
2015, a non-excepted, interstate CDL holder without medical
certification status information on the CDLIS motor vehicle record is
designated ``not-certified'' to operate a CMV in interstate commerce.
After January 30, 2015, and through June 22, 2025, a motor carrier may
use a copy of the driver's current medical examiner's certificate that
was submitted to the State for up to 15 days from the date it was
issued as proof of medical certification.
* * * * *
    (9) * * *
    (ii) Through June 22, 2025, for drivers required to have a CDL, a
note relating to verification of medical examiner listing on the
National Registry of Certified Medical Examiners required by Sec.
391.23(m)(2).
* * * * *

    Issued under authority delegated in 49 CFR 1.87.
Meera Joshi,
Acting Administrator.
[FR Doc. 2021-08238 Filed 4-19-21; 4:15 pm]
BILLING CODE 4910-EX-P


UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

WASHINGTON D.C., 20460

  SEQ CHAPTER \h \r 1 PC Code:  080805

DP Barcode: 357096, 357099

Date:    June 19, 2009

MEMORANDUM

SUBJECT:      Prometryn (CAS Reg. No. 7287-19-6) Tier I Drinking Water Assessment

for the Proposed New Uses on Carrots, Okra, Parsley, Cilantro, Celeriac, and Leafy Petioles

FROM:	Silvia C. Termes, Chemist

		Environmental Fate and Effects Division

		Environmental Risk Branch III

TO:		Barbara Madden

		Risk Integration, Minor Use & Emergency Response Branch

		Registration Division

THRU:	Dana Spatz, Branch Chief

		Environmental Fate and Effects Division

		Environmental Risk Branch III

The Environmental Fate and Effects Division has completed a Tier I Drinking Water Assessment for registration of proposed new uses on carrots, okra, parsley, cilantro, celeriac and leafy petioles. These proposed new uses have been included in the existing labels of two end-use products containing prometryn as the active ingredient:

Caparol  4L   ( 44.4% prometryn; EPA Reg. No.100-620; Syngenta )

Prometryn 4L Herbicide  (44.4% prometryn by weight; EPA Reg. No.66222-15; Makhteshim Agan of North America, Inc).

The exposure concentrations in drinking water drawn from surface water were estimated using the Tier I simulation FIRST (Version 1.1.1).  Concentrations of prometryn in ground water were estimated using the Tier I SCI-GROW (Version 2.3) regression model.  This assessment addresses concentrations of parent only; no degradates were included.

Results of Tier I Estimates (FIRST and SCI-GROW)

Table 1 summarizes the Tier 1 estimated concentrations in surface and ground water.  Application information was extracted from the proposed labels.

Table 1.  Estimated Concentrations of Prometryn in Drinking Water Drawn from Surface Water (FIRST) and from Ground Water (SCI-GROW)

Crop	Application  Information	Peak Day (acute)

Concentration, µg/L

Surface water	Annual Average (Chronic) Conc.,

µg/L, Surface water	Ground Water,

µg/L

Carrots

	3 Applications @ 2 lb ai/acre, 30 days apart, ground	377.4	157.9	23.2

Okra

	1 application @ 1.5 lb ai/acre, ground	96.7	40.5	6.0

Cilantro

	1 application @ 1.6 lb ai/acre, ground	103.2	43.2	6.2

Parsley

	3 applications at 0.5 lb ai/acre, 30 days apart, ground	94.3	39.5	5.8

Celeriac

	1 application @ 4 lb ai/acre, ground	257.9	107.9	15.5

Leafy Petioles	1 application @ 2 lb ai/acre, ground	129.0	54.0	8.0

Cotton	1 application @ 2.8 lb ai/acre, aerial, 0.20 PCA	42.0	17.8	11.2

Table 2 summarizes the exposure modeling input parameters.

Table 2.  Model Input Parameters

Physical-chemical Properties and Environmental Fate Input parameters Available Data	Selected  Value for Modeling	Source

Molecular Weight , g/mole	241.35	241.35	Product chemistry

Solubility in Water, mg/L	33	33	Product chemistry

Vapor Pressure (25 deg)	1.6E-6 torr	1.6 E-6 torr	Product chemisty

Henry’s Law Constant, atm-m3-mole-1	N/A	9.1 E-9 (est.)	Estimated (EPIWin, Version 4.0)

Hydrolysis half-life, days	Stable	0	MRID495737-04

Photolysis in Water, days	Stable	0	MRID495737-04

Aerobic Soil Metabolism half-life. days	270 days (1-soil)	3x 270

810 days (as per Input Parameter Guidance)	MRID 4833801

Anaerobic Aquatic Metabolism half-life	N/A	-	N/A

Aerobic Aquatic Metabolism Half-life	N/A	2x 810

1620 days (as per Input Parameter Guidance)	N/A

Sorption Coefficients, Koc	Sand: 246

Loamy sand:  169

Silt loam: 117

Silty clay loam: 448	244 (as per Input Parameter Guidance)	MRID 00148338

Summary of the Environmental Fate of Prometryn

Prometryn is a methylthio-(symmetric) triazine. The chemical names (CAS and IUPAC) are presented below together with the CAS Registry Number and chemical structure:

U.S. EPA PC Code:	080805

CA DPR Chemical Code:  502

IUPAC:  N2,N4-diisopropyl-6-methylthio-1,3,5-triazine-2,4-diamine

CAS:   N2,N4-diisopropyl-6-methylthio-1,3,5-triazine-2,4-diamine

CAS Reg. No.:  7287-19-6

Chemical Formula:  C10H19N5S

SMILES: CSc1nc(NC(C)C)nc(NC(C)C)n1

Chemical Structure:

Metabolites of Prometryn

Name: Prometryn aerobic soil metabolite (27% after one year incubation)

CAS Name:	1,3,5-Triazin-2(1H)-one, 4,6-bis((1-methylethyl)amino)-

IUPAC:	2,4-bis(isopropylamino)-6-hydroxy-s-triazine

CAS Reg No.	 7374-53-0

Name: Prometryn aerobic soil metabolite (1.1% after one year incubation)

IUPAC: 2-amino-4isopropylamino-6-methylthio-s-triazine (GS-1154)

The environmental fate properties of prometryn, along with the major and minor degradates detected in the submitted environmental fate and transport studies are presented in Table 3.

Table 3.  Environmental Fate and Transport Behavior of Prometyrn

Study

Value

Major Degradates

Minor Degradates

MRID #

Study Classification

Abiotic Hydrolysis	Stable at pH 5, 7, and 9	None	49573704	Acceptable

Direct Aqueous Photolysis	Stable	None	49573705	Acceptable

Soil Photolysis 	Stable	None	49573706	Acceptable

Aerobic Soil Metabolism	 t ½  270 days; (One soil)

Sandy Soil

	2,4-bis(isopropylamino)-6-hydroxy-s-triazine (GS-11526, 27% of the applied radioactivity after 360 days

2-amino-4isopropylamino-6-methylthio-s-triazine (GS-1154); 1.1% at 30 days	00148338	Acceptable

Anaerobic Soil Metabolism	t ½ 90 days

Stable

41155509	Acceptable

Anaerobic Aquatic Metabolism	No data submitted	No data	-	N/A

Aerobic Aquatic Metabolism	No data submitted	No data	-	N/A

163- Mobility in Soil, Batch-equilibrium Adsorption/

Desorption	K Freundlich, Adsorpotion

0.86 (agricultural sand) to 3.18 (silty clay loam); add other soils

	GS 11526 mobile to very mobile (Freudlich Kads 7.1 to 0.5)

GS-11354 very mobile (Freudlich Kads  0.63-1.9)

	49573713

41875901

41875902

41875903

41875904

41875905	Acceptable

163-2 Volatility from Soil (Laboratory)	Sand soil

Volatility was minimal, 0.99% prometryn volatilized by 30 days	No 41875906	Acceptable

Terrestrial Field Dissipation	t ½  Cotton CA, 105 days

t ½ Cotton CA 71 days

t ½ Cotton  TX  14-30 days

t ½ Cotton TX 14 days

	Prometryn was not detected below 45 cm

CS-11354  detected at 120 cm soil depth

Acceptable  (for flowable concentrate)

Aquatic Field Dissipation	No data	Not applicable	Not applicable	N/A

According to the submitted physical-chemical and environmental fate data, the degradation of prometryn is driven by microbial (biotic) activity and not by abiotic processes; however, biotransformation is slow. The major biotransformation product is GS-11526.  The low Freundlich adsorption coefficient of prometryn suggests that the chemical has the potential to run off and/or leach to ground water.  Prometryn is stable to hydrolysis and direct photolysis in aqueous media.

Prometryn and its degradates are very mobile to mobile in soil.  Potential transport mechanisms include runoff to surface water, leaching to ground water, spray drift, and secondary drift of volatilized or soil-bound residues leading to deposition onto nearby or more distant ecosystems.

The US Geological Survey (USGS) has reported data on the presence of pesticides in rain and wet deposition in four USA agricultural watersheds. Among other pesticides, prometryn was detected in rain and wet deposition in California.

Modeling Outputs - FIRST

CARROTS

A.	3 applications 30 days apart @ 2 lb ai/acre

RUN No.1330 FOR Prometryn        ON   Carrots       * INPUT VALUES *

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

 RATE (#/AC)   No.APPS &   SOIL  SOLUBIL  APPL TYPE  %CROPPED INCORP

  ONE(MULT)    INTERVAL    Koc   (PPM )   (%DRIFT)     AREA    (IN)

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

.000(  5.849)   3  30     244.0   33.0   GROUND( 6.4)  87.0    .0

FIELD AND RESERVOIR HALFLIFE VALUES (DAYS)

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

METABOLIC  DAYS UNTIL  HYDROLYSIS   PHOTOLYSIS   METABOLIC  COMBINED

 (FIELD)  RAIN/RUNOFF  (RESERVOIR)  (RES.-EFF)   (RESER.)   (RESER.)

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

 810.00        2          N/A       .00-     .00   ******   1620.00

UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.0  JAN 1, 2007

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

     PEAK DAY  (ACUTE)      ANNUAL AVERAGE (CHRONIC)

       CONCENTRATION             CONCENTRATION

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

         377.368                    157.873

B.	One application @ 2 lb ai/acre

RUN No.  12 FOR Prometryn        ON   Carrot        * INPUT VALUES *

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

  RATE (#/AC)   No.APPS &   SOIL  SOLUBIL  APPL TYPE  %CROPPED INCORP

   ONE(MULT)    INTERVAL    Koc   (PPM )   (%DRIFT)     AREA    (IN)

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

2.000(  2.000)   1   1     244.0   33.0   GROUND( 6.4)  87.0    .0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS)

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

 METABOLIC  DAYS UNTIL  HYDROLYSIS   PHOTOLYSIS   METABOLIC  COMBINED

  (FIELD)  RAIN/RUNOFF  (RESERVOIR)  (RES.-EFF)   (RESER.)   (RESER.)

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

  810.00        2          N/A       .00-     .00   ******   1620.00

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.0  JAN 1, 2007

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

      PEAK DAY  (ACUTE)      ANNUAL AVERAGE (CHRONIC)

        CONCENTRATION             CONCENTRATION

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

53.952

C.	Two applications@ 2 lb/acre, 30 days apart

 RUN No. 122 FOR Prometryn        ON   Carrots       * INPUT VALUES *

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

  RATE (#/AC)   No.APPS &   SOIL  SOLUBIL  APPL TYPE  %CROPPED INCORP

   ONE(MULT)    INTERVAL    Koc   (PPM )   (%DRIFT)     AREA    (IN)

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

2.000(  3.949)   2  30     244.0   33.0   GROUND( 6.4)  87.0    .0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS)

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

 METABOLIC  DAYS UNTIL  HYDROLYSIS   PHOTOLYSIS   METABOLIC  COMBINED

  (FIELD)  RAIN/RUNOFF  (RESERVOIR)  (RES.-EFF)   (RESER.)   (RESER.)

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

  810.00        2          N/A       .00-     .00   ******   1620.00

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.0  JAN 1, 2007

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

      PEAK DAY  (ACUTE)      ANNUAL AVERAGE (CHRONIC)

        CONCENTRATION             CONCENTRATION

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

106.565

OKRA

A.	One application at 1.5 lb ai/acre

RUN No.  21 FOR Prometryn        ON   Okra          * INPUT VALUES *

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

 RATE (#/AC)   No.APPS &   SOIL  SOLUBIL  APPL TYPE  %CROPPED INCORP

  ONE(MULT)    INTERVAL    Koc   (PPM )   (%DRIFT)     AREA    (IN)

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

.500(  1.500)   1   1     244.0   33.0   GROUND( 6.4)  87.0    .0

FIELD AND RESERVOIR HALFLIFE VALUES (DAYS)

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

METABOLIC  DAYS UNTIL  HYDROLYSIS   PHOTOLYSIS   METABOLIC  COMBINED

 (FIELD)  RAIN/RUNOFF  (RESERVOIR)  (RES.-EFF)   (RESER.)   (RESER.)

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

 810.00        2          N/A       .00-     .00   ******   1620.00

UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.0  JAN 1, 2007

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

     PEAK DAY  (ACUTE)      ANNUAL AVERAGE (CHRONIC)

       CONCENTRATION             CONCENTRATION

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

40.464

b.	Two applications @ 0.75 lb ai 30 days apart

RUN No.  22 FOR Prometryn        ON   Okra          * INPUT VALUES *

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

 RATE (#/AC)   No.APPS &   SOIL  SOLUBIL  APPL TYPE  %CROPPED INCORP

  ONE(MULT)    INTERVAL    Koc   (PPM )   (%DRIFT)     AREA    (IN)

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

.750(  1.481)   2  30     244.0   33.0   GROUND( 6.4)  87.0    .0

FIELD AND RESERVOIR HALFLIFE VALUES (DAYS)

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

METABOLIC  DAYS UNTIL  HYDROLYSIS   PHOTOLYSIS   METABOLIC  COMBINED

 (FIELD)  RAIN/RUNOFF  (RESERVOIR)  (RES.-EFF)   (RESER.)   (RESER.)

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

 810.00        2          N/A       .00-     .00   ******   1620.00

UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.0  JAN 1, 2007

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

     PEAK DAY  (ACUTE)      ANNUAL AVERAGE (CHRONIC)

       CONCENTRATION             CONCENTRATION

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

39.962

CILANTRO

Single application @ 1.6 lb ai/acre

RUN No.  31 FOR Prometryn        ON   Cilantro      * INPU

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

 RATE (#/AC)   No.APPS &   SOIL  SOLUBIL  APPL TYPE  %CROP

  ONE(MULT)    INTERVAL    Koc   (PPM )   (%DRIFT)     ARE

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

.600(  1.600)   1   1     244.0   33.0   GROUND( 6.4)  87.

FIELD AND RESERVOIR HALFLIFE VALUES (DAYS)

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

METABOLIC  DAYS UNTIL  HYDROLYSIS   PHOTOLYSIS   METABOLIC

 (FIELD)  RAIN/RUNOFF  (RESERVOIR)  (RES.-EFF)   (RESER.)

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

 810.00        2          N/A       .00-     .00   ******

UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.0  J

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

     PEAK DAY  (ACUTE)      ANNUAL AVERAGE (CHRONIC)

       CONCENTRATION             CONCENTRATION

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

43.161

PARSLEY

A.	Single application @ 0.5 lb ai/acre

RUN No.  41 FOR Prometryn        ON   Parsley       * INPUT VALUES *

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

 RATE (#/AC)   No.APPS &   SOIL  SOLUBIL  APPL TYPE  %CROPPED INCORP

  ONE(MULT)    INTERVAL    Koc   (PPM )   (%DRIFT)     AREA    (IN)

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

.500(   .500)   1   1     244.0   33.0   GROUND( 6.4)  87.0    .0

FIELD AND RESERVOIR HALFLIFE VALUES (DAYS)

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

METABOLIC  DAYS UNTIL  HYDROLYSIS   PHOTOLYSIS   METABOLIC  COMBINED

 (FIELD)  RAIN/RUNOFF  (RESERVOIR)  (RES.-EFF)   (RESER.)   (RESER.)

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

 810.00        2          N/A       .00-     .00   ******   1620.00

UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.0  JAN 1, 2007

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

     PEAK DAY  (ACUTE)      ANNUAL AVERAGE (CHRONIC)

       CONCENTRATION             CONCENTRATION

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

13.488

B.	Two appications @0.5 lb ai/acre, 30 days apart

RUN No.  42 FOR Prometryn        ON   Parsley       * INPUT VALUES *

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

 RATE (#/AC)   No.APPS &   SOIL  SOLUBIL  APPL TYPE  %CROPPED INCORP

  ONE(MULT)    INTERVAL    Koc   (PPM )   (%DRIFT)     AREA    (IN)

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

.500(   .987)   2  30     244.0   33.0   GROUND( 6.4)  87.0    .0

FIELD AND RESERVOIR HALFLIFE VALUES (DAYS)

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

METABOLIC  DAYS UNTIL  HYDROLYSIS   PHOTOLYSIS   METABOLIC  COMBINED

 (FIELD)  RAIN/RUNOFF  (RESERVOIR)  (RES.-EFF)   (RESER.)   (RESER.)

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

 810.00        2          N/A       .00-     .00   ******   1620.00

UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.0  JAN 1, 2007

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

     PEAK DAY  (ACUTE)      ANNUAL AVERAGE (CHRONIC)

       CONCENTRATION             CONCENTRATION

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

26.641

C.	Three applications @ 0.5 lb ai/acre, 30 days apart

RUN No.  43 FOR Prometryn        ON   Parsley       * INPUT VALUES *

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

 RATE (#/AC)   No.APPS &   SOIL  SOLUBIL  APPL TYPE  %CROPPED INCORP

  ONE(MULT)    INTERVAL    Koc   (PPM )   (%DRIFT)     AREA    (IN)

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

.500(  1.462)   3  30     244.0   33.0   GROUND( 6.4)  87.0    .0

FIELD AND RESERVOIR HALFLIFE VALUES (DAYS)

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

METABOLIC  DAYS UNTIL  HYDROLYSIS   PHOTOLYSIS   METABOLIC  COMBINED

 (FIELD)  RAIN/RUNOFF  (RESERVOIR)  (RES.-EFF)   (RESER.)   (RESER.)

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

 810.00        2          N/A       .00-     .00   ******   1620.00

UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.0  JAN 1, 2007

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

     PEAK DAY  (ACUTE)      ANNUAL AVERAGE (CHRONIC)

       CONCENTRATION             CONCENTRATION

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

39.468

			CELERIAC

 Single application @ 4 lb ai/acre

RUN No.  51 FOR Prometryn        ON   Celeriac      * INPUT VALUES *

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

  RATE (#/AC)   No.APPS &   SOIL  SOLUBIL  APPL TYPE  %CROPPED INCORP

   ONE(MULT)    INTERVAL    Koc   (PPM )   (%DRIFT)     AREA    (IN)

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

4.000(  4.000)   1   1     244.0   33.0   GROUND( 6.4)  87.0    .0

 FIELD AND RESERVOIR HALFLIFE VALUES (DAYS)

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 METABOLIC  DAYS UNTIL  HYDROLYSIS   PHOTOLYSIS   METABOLIC  COMBINED

  (FIELD)  RAIN/RUNOFF  (RESERVOIR)  (RES.-EFF)   (RESER.)   (RESER.)

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  810.00        2          N/A       .00-     .00   ******   1620.00

 UNTREATED WATER CONC (MICROGRAMS/LITER (PPB)) Ver 1.1.0  JAN 1, 2007

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      PEAK DAY  (ACUTE)      ANNUAL AVERAGE (CHRONIC)

        CONCENTRATION             CONCENTRATION

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          257.954                    107.903

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