[Federal Register: September 10, 2004 (Volume 69, Number 175)]
[Proposed Rules]               
[Page 54845-55015]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr10se04-14]                         
 

[[Page 54845]]

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Part II





Environmental Protection Agency





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40 CFR Parts 85, 86, 90, et al.



Test Procedures for Testing Highway and Nonroad Engines and Omnibus 
Technical Amendments; Proposed Rule


[[Page 54846]]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Parts 85, 86, 89, 90, 91, 92, 94, 1039, 1048, 1051, 1065, 
and 1068

[AMS-FRL-7803-7]
RIN 2060-AM35

 
Test Procedures for Testing Highway and Nonroad Engines and 
Omnibus Technical Amendments

AGENCY: Environmental Protection Agency (EPA).

ACTION: Notice of proposed rulemaking.

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SUMMARY: This proposed regulation aims to revise and harmonize test 
procedures from the various EPA programs for controlling engine 
emissions. It will not address emission standards, nor is it intended 
to change the emission reductions expected from these EPA programs. 
Rather, it proposes to amend the regulations, which contain laboratory 
specifications for equipment and test fuels, instructions for preparing 
engines and running tests, calculations for determining final emission 
levels from measured values, and instructions for running emission 
tests using portable measurement devices outside the laboratory. These 
regulations currently apply to land-based nonroad diesel engines, land-
based nonroad spark-ignition engines over 19 kilowatts, and 
recreational vehicles. These proposed revisions will update the 
regulations to deal more effectively with the more stringent standards 
recently promulgated by EPA and will also clarify and better define 
certain elements of the required test procedures. In particular, the 
proposed amendments will better specify the procedures applicable to 
field testing under the regulations.
    This action also proposes to apply the regulations to highway 
heavy-duty diesel engine regulations. This action is appropriate 
because EPA has historically drafted a full set of testing 
specifications for each vehicle or engine category subject to emission 
standards as each program was developed over the past three decades. 
This patchwork approach has led to some variation in test parameters 
across programs, which we hope to address by adopting a common set of 
test requirements. The primary goal of this effort is to create unified 
testing requirements for all engines, which when implemented will 
streamline laboratory efforts for EPA and industry.
    This action will also include other technical changes intended to 
clarify and better define requirements for several different EPA engine 
programs. These changes are relatively minor and are technical in 
scope.

DATES: Comments: Send written comments on this proposed rule by October 
29, 2004. See Section IV of the SUPPLEMENTARY INFORMATION section for 
more information about written comments.
    Hearings: We will hold an informal public workshop in Ann Arbor on 
October 1, 2004. If anyone requests a public hearing , we will hold it 
on September 27, 2004. To request a public hearing, send a request to 
the contact in FOR FURTHER INFORMATION CONTACT by September 20, 2004. 
See Section III for more information about public workshops and 
hearings.

ADDRESSES: You may submit comments, identified by docket number OAR-
2004-0017, by any of the following methods:
    Federal Rulemaking Portal: http://www.regulations.gov. Follow the 

on-line instructions for submitting comments.
    Agency Web site: http://www.epa.gov/edocket. Follow the 

instructions for submitting comments. Note that this is not available 
until after this proposal is published in the Federal Register.
    E-mail: testamendments@epa.gov. Specify docket number OAR-2004-0017 
in the body of the message.
    Fax: (202) 260-4400.
    Mail or Hand Delivery: Environmental Protection Agency, Air Docket, 
Mailcode 6102T, 1200 Pennsylvania Ave., NW., Washington, DC, 20460.
    Hand Delivery or Courier: EPA Docket Center, (EPA/DC) EPA West, 
Room B102, 1301 Constitution Ave., NW., Washington, DC., Attention 
Docket ID No. A-2001-28. Such deliveries are only accepted during the 
Docket's normal hours of operation from 8:30 a.m. to 4:30 p.m., Monday 
through Friday, excluding legal holidays.
    Instructions: Include the agency name and docket number in all 
submissions for this rulemaking. All comments received will be posted 
without change to http://www.epa.gov/edocket, including any personal 

information provided. For detailed instructions on submitting comments 
and additional information on the rulemaking process, see the ``Public 
Participation'' heading of the SUPPLEMENTARY INFORMATION section of 
this document.
    Docket: For access to the docket to read background documents or 
comments received, go to the Web site at the URL identified above or to 
the Air Docket at the address identified above.

FOR FURTHER INFORMATION CONTACT: Alan Stout, U.S. EPA, Voice-mail (734) 
214-4636; E-mail: stout.alan@epa.gov

SUPPLEMENTARY INFORMATION:

A. Regulated Entities

    This proposed action would affect companies that manufacture or 
sell engines. Regulated categories and entities include:

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                Category                   NAICS Codes a        Examples of potentially regulated entities
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Industry................................         333618   Manufacturers of new engines.
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b North American Industry Classification System (NAICS).

    This list is not intended to be exhaustive, but rather provides a 
guide regarding entities likely to be regulated by this action. To 
determine whether particular activities may be regulated by this 
action, you should carefully examine the proposed regulations. You may 
direct questions regarding the applicability of this action to the 
person listed in FOR FURTHER INFORMATION CONTACT.

B. How Can I Get Copies of This Document and Other Related Information?

    1. Docket. EPA has established an official public docket for this 
action under Docket ID No. OAR-2004-0017. The official public docket 
consists of the documents specifically referenced in this action, any 
public comments received, and other information related to this action. 
Although a part of the official docket, the public docket does not 
include Confidential Business Information (CBI) or other information 
whose disclosure is restricted by statute. Documents in the official 
public docket are listed in the index list in EPA's electronic public 
docket and comment system, EDOCKET. Documents may be available either 
electronically or in hard copy. Electronic documents may be viewed 
through EDOCKET. Hard copy documents may be viewed at the EPA

[[Page 54847]]

Docket Center, (EPA/DC) EPA West, Room B102, 1301 Constitution Ave., 
NW., Washington, DC. Docket in The EPA Docket Center Public Reading 
Room is open from 8:30 a.m. to 4:30 p.m., Monday through Friday, 
excluding legal holidays. The telephone number for the Public Reading 
Room is (202) 566-1744.
    This proposal relies in part on information related to our November 
2002 final rule, which can be found in Public Docket A-2000-01. This 
docket is incorporated by reference into the docket for this action, 
OAR-2004-0017.
    2. Electronic Access. You may access this Federal Register document 
electronically through the EPA Internet under the Federal Register 
listings at http://www.epa.gov/fedrgstr/ Or you can go to the federal-wide eRulemaking site at http://www.regulations.gov.
    An electronic version of the public docket is available through 

EDOCKET. You may use EDOCKET at http://www.epa.gov/edocket/ to submit 

or view public comments, access the index listing of the contents of 
the official public docket, and to access those documents in the public 
docket that are available electronically. Once in the system, select 
``search,'' then key in the appropriate docket identification number.
    Certain types of information will not be placed in the EDOCKET. 
Information claimed as CBI and other information whose disclosure is 
restricted by statute, which is not included in the official public 
docket, will not be available for public viewing in EPA's electronic 
public docket. EPA's policy is that copyrighted material will not be 
placed in EPA's electronic public docket but will be available only in 
printed, paper form in the official public docket. To the extent 
feasible, publicly available docket materials will be made available in 
EPA's electronic public docket. When a document is selected from the 
index list in EDOCKET, the system will identify whether the document is 
available for viewing in EPA's electronic public docket. Publicly 
available docket materials that are not available electronically may be 
viewed at the docket facility identified in Unit I.B. EPA intends to 
work towards providing electronic access to all of the publicly 
available docket materials through EPA's electronic public docket.
    For public commenters, it is important to note that EPA's policy is 
that public comments, whether submitted electronically or in paper, 
will be made available for public viewing in EPA's electronic public 
docket as EPA receives them and without change, unless the comment 
contains copyrighted material, CBI, or other information whose 
disclosure is restricted by statute. When EPA identifies a comment 
containing copyrighted material, EPA will provide a reference to that 
material in the version of the comment that is placed in EPA's 
electronic public docket. The entire printed comment, including the 
copyrighted material, will be available in the public docket.
    Public comments submitted on computer disks that are mailed or 
delivered to the docket will be transferred to EPA's electronic public 
docket. Public comments that are mailed or delivered to the Docket will 
be scanned and placed in EPA's electronic public docket. Where 
practical, physical objects will be photographed, and the photograph 
will be placed in EPA's electronic public docket along with a brief 
description written by the docket staff.

C. How and to Whom Do I Submit Comments?

    We are opening a formal comment period by publishing this document. 
We will accept comments for the period indicated under DATES above. If 
you have an interest in the program described in this document, we 
encourage you to comment on any aspect of this rulemaking.
    Your comments will be most useful if you include appropriate and 
detailed supporting rationale, data, and analysis. If you disagree with 
parts of the proposal, we encourage you to suggest and analyze 
alternate approaches to meeting the air quality goals described in this 
proposal. You should send all comments, except those containing 
proprietary information, to our Air Docket (see ADDRESSES) before the 
end of the comment period.
    You may submit comments electronically, by mail, or through hand 
delivery/courier. To ensure proper receipt by EPA, identify the 
appropriate docket identification number in the body of your comment. 
Submit your comments within the specified comment period. Comments 
received after the close of the comment period will be marked ``late.'' 
EPA is not required to consider these late comments. If you wish to 
submit CBI or information that is otherwise protected by statute, 
please follow the instructions in Section IX.D. Do not use EPA Dockets 
or e-mail to submit CBI or information protected by statute.

1. Electronically

    If you submit an electronic comment as prescribed below, we 
recommend that you include your name, mailing address, and an e-mail 
address or other contact information in the body of your comment. Also 
include this contact information on the outside of any disk or CD ROM 
you submit, and in any cover letter accompanying the disk or CD ROM. 
This ensures that you can be identified as the submitter of the comment 
and allows us to contact you if we cannot read your comment or if we 
need further information on the substance of your comment. Our policy 
is that we will not edit your comment; any identifying or contact 
information provided in the body of a comment will be included as part 
of the comment that is placed in the official public docket and made 
available in EPA's electronic public docket. If we cannot read your 
comment due to technical difficulties and cannot contact you for 
clarification, we may not be able to consider your comment.
i. EPA Dockets
    To submit comments on EPA's electronic public docket, go directly 
to EPA Dockets at http://www.epa.gov/edocket and follow the online 

instructions for submitting comments. To access EPA's electronic public 
docket from the EPA Internet Home Page, select ``Information Sources,'' 
``Dockets,'' and ``EPA Dockets.'' Once in the system, select ``Quick 
Search,'' and then key in Docket ID No. OAR-2004-0017. The system is an 
``anonymous access'' system, which means we will not know your 
identity, e-mail address, or other contact information unless you 
provide it in the body of your comment.
ii. E-Mail
    Comments may be sent by electronic mail to testamendments@epa.gov. 
In contrast to EPA's electronic public docket, EPA's e-mail system is 
not an ``anonymous access'' system. If you send a comment via 
electronic mail directly to the Docket without going through EPA's 
electronic public docket, the e-mail system automatically captures your 
e-mail address. E-mail addresses that are automatically captured are 
included and made available as part of the comment that is placed in 
the official public docket.
iii. Disk or CD ROM
    You may submit comments on a disk or CD ROM that you send to the 
mailing address identified in Section IX.A.2 below. Avoid the use of 
special software, characters, and any form of encryption.

2. By Mail

    Send your comments to: Air Docket, Environmental Protection Agency,

[[Page 54848]]

Mailcode: 6102T, 1200 Pennsylvania Ave., NW., Washington, DC, 20460.

3. By Hand Delivery or Courier

    Deliver your comments to: EPA Docket Center, (EPA/DC) EPA West, 
Room B102, 1301 Constitution Ave., NW., Washington, DC., Attention 
Docket ID No. A-2001-28. Such deliveries are only accepted during the 
Docket's normal hours of operation from 8:30 a.m. to 4:30 p.m., Monday 
through Friday, excluding legal holidays.

D. How Should I Submit CBI to the Agency?

    Do not submit information that you consider to be CBI 
electronically through EPA's electronic public docket or by e-mail. 
Send or deliver information identified as CBI only to the following 
address: U.S. Environmental Protection Agency, Assessment and Standards 
Division, 2000 Traverwood Drive, Ann Arbor, MI, 48105, Attention Docket 
No. OAR-2004-0017. You may claim information that you submit to EPA as 
CBI by marking any part or all of that information as CBI (if you 
submit CBI on disk or CD ROM, 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 CBI). Information so marked will not be 
disclosed except in accordance with procedures set forth in 40 CFR part 
2.
    In addition to one complete version of the comment that includes 
any 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 and EPA's electronic public docket. If you submit 
the copy that does not contain CBI on disk or CD ROM, mark the outside 
of the disk or CD ROM clearly that it does not contain CBI. Information 
not marked as CBI will be included in the public docket and EPA's 
electronic public docket without prior notice. If you have any 
questions about CBI or the procedures for claiming CBI, please consult 
the person identified in the FOR FURTHER INFORMATION CONTACT section.

Table of Contents

I. Modified Test Procedures for Highway and Nonroad Engines
    A. Incorporation of Nonroad Test Procedures for Heavy Duty 
Highway Engines
    B. Revisions to Part 1065
II. Technical Amendments
    A. Definitions and Penalties
    B. Nonroad general compliance provisions (40 CFR part 1068)
    C. Land-based nonroad diesel engines (40 CFR parts 89 and 1039)
    D. Marine diesel engines (40 CFR part 94)
    E. Small nonroad spark-ignition engines (40 CFR part 90)
    F. Marine spark-ignition engines (40 CFR part 91)
    G. Large nonroad spark-ignition engines (40 CFR part 1048)
    H. Recreational vehicles (40 CFR part 1051)
    I. Locomotives (40 CFR part 92)
    J. Highway engines and vehicles (40 CFR part 86)
III. Public Participation
IV. Statutory and Executive Order Reviews
V. Statutory Provisions and Legal Authority

I. Modified Test Procedures for Highway and Nonroad Engines

A. Incorporation of Nonroad Test Procedures for Heavy Duty Highway 
Engines

    As part of our initiative to update the content, organization and 
writing style of our regulations, we are proposing revisions to our 
test procedures.\1\ We have grouped all of our engine dynamometer and 
field testing test procedures into one part entitled, ``Part 1065: Test 
Procedures.'' For each engine or vehicle sector for which we have 
recently promulgated standards (such as land-based nonroad diesel 
engines or recreational vehicles), we identified an individual part as 
the standard-setting part for that sector. These standard-setting parts 
then refer to one common set of test procedures in part 1065. We intend 
in this rule to continue this process of having all our engine programs 
refer to a common set of procedures by applying part 1065 to all heavy-
duty highway engines.
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    \1\ For an overview of our new regulatory organization, refer to 
our fact sheet entitled, ``Plain-Language Format of Emission 
Regulations for Nonroad Engines'' EPA420-F-02-046, September 2002 
http://www.epa.gov/otag/largesi.htm.

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    In the past, each engine or vehicle sector had its own set of 
testing procedures. There are many similarities in test procedures 
across the various sectors. However, as we introduced new regulations 
for individual sectors, the more recent regulations featured test 
procedure updates and improvements that the other sectors did not have. 
As this process continued, we recognized that a single set of test 
procedures would allow for improvements to occur simultaneously across 
engine and vehicle sectors. A single set of test procedures is easier 
to understand than trying to understand many different sets of 
procedures, and it is easier to move toward international test 
procedure harmonization if we only have one set of test procedures. We 
note that procedures that are particular for different types of engines 
or vehicles, for example, test schedules designed to reflect the 
conditions expected in use for particular types of vehicles or engines, 
will remain separate and would be reflected in the standard-setting 
parts of the regulations.
    In addition to reorganizing and rewriting the test procedures for 
improved clarity, we are proposing to make a variety of changes to 
improve the content of the testing specifications, including the 
following:
     Writing specifications and calculations in international 
units
     Adding procedures by which manufacturers can demonstrate 
that alternate test procedures are equivalent to specified procedures.
     Including specifications for new measurement technology 
that has been shown to be equivalent or more accurate than existing 
technology; procedures that improve test repeatability, calculations 
that simplify emissions determination; new procedures for field testing 
engines, and a more comprehensive set of definitions, references, and 
symbols.
     Defining calibration and accuracy specifications that are 
scaled to the applicable standard, which allows us to adopt a single 
specification that applies to a wide range of engine sizes and 
applications.
    Some emission-control programs already rely on the test procedures 
in part 1065. These programs regulate land-based nonroad diesel 
engines, recreational vehicles, and nonroad spark-ignition engines over 
19 kW.
    In this document, we are proposing to adopt the lab-testing and 
field-testing specifications in part 1065 for all heavy-duty highway 
engines, as described in Section II.J. These procedures would replace 
those currently published in subpart N in 40 CFR part 86. We are 
proposing a gradual transition from the part 86 procedures. We will 
allow the use of part 1065 procedures beginning in the 2006 model year. 
By the 2008 model year, part 1065 procedures will be required for any 
new testing. For all testing completed for 2007 and earlier model 
years, manufacturers may continue to rely on carryover test data based 
on part 86 procedures to certify engine families in later years. In 
addition, other subparts in part 86, as well as regulations for many 
different nonroad engines refer to the test procedures in part 86. We 
are including updated references for all these other programs to refer 
instead to the appropriate cite in part 1065.
    Part 1065 is also advantageous for in-use testing because it 
specifies the same procedures for all common parts of field testing and 
laboratory testing. It also contains new provisions that help

[[Page 54849]]

ensure that engines are tested in a laboratory in a way that is 
consistent with how they operate in use. These new provisions will 
ensure that engine dynamometer lab testing and field testing are 
conducted in a consistent way.
    In the future, we may propose to apply the test procedures 
specified in part 1065 to other types of engines, so we encourage 
companies involved in producing or testing other engines to stay 
informed of developments related to these test procedures. We also 
request comment on whether we should make part 1065 applicable for 
light-duty vehicles, light-duty trucks, motorcycles, and aircraft in 
the future. Although light-duty vehicles, light-duty trucks, and 
motorcycles are tested on chassis dynamometers, rather than engine 
dynamometers, there are several aspects of testing that are common. For 
example, emission sampling systems, dilution systems, gas analyzers, PM 
measurement equipment, some test sequences, fuels, analytical gas 
standards, and specifications related to oxygenated fuels are all 
similar. However, there are differences, such as chassis dynamometer 
specifications, vehicle intake air, exhaust system, and coolant 
specifications, some test sequences such as evaporative and refueling 
tests, vehicle preparation, and some emission calculations (e.g., g/mi 
vs g/kW-hr) that would have to be addressed in any future decision to 
apply part 1065 to these engines.
    Although testing aircraft engines requires some special provisions, 
there are several aspects of testing that are common, such as emission 
sampling systems, dilution systems, gas analyzers, PM measurement 
equipment, some test sequences, fuels, analytical gas standards, and 
specifications related to oxygenated fuels.

B. Revisions to Part 1065

    Part 1065 was originally adopted on November 8, 2002 (67 FR 68242), 
and was initially applicable to standards regulating large nonroad 
spark-ignition engines and recreational vehicles under 40 CFR parts 
1048 and 1051. The recent rulemaking adopting emission standards for 
nonroad diesel engines has also made part 1065 optional for Tier 2 and 
Tier 3 standards and required for Tier 4 standards. The test procedures 
currently in part 1065 are sufficient to conduct testing, but we are 
proposing to reorganize and add content to improve these procedures. In 
particular, we propose to reorganize part 1065 by subparts as shown 
below:

Subpart A: General provisions; global information on applicability, 
alternate procedures units of measure, etc.
Subpart B: equipment specifications; required hardware for testing
Subpart C: measurement instruments
Subpart D: calibration and performance checks; for measurement 
systems
Subpart E: engine selection, preparation, and maintenance
Subpart F: test protocols; step-by-step sequences for testing and 
test validation.
Subpart G: calculations and required information
Subpart H: fuels, fluids, and analytical gases
Subpart I: oxygenated fuels; special test procedures
Subpart J: field testing
Subpart K: definitions, references, and symbols

    We propose to scale specifications for test equipment and 
measurement instruments by parameters such as engine power, engine 
speed and the emission standards to which an engine must comply. That 
way a single set of specifications will cover the full range of engine 
sizes and our full range of emission standards and our regulations will 
therefore specify equipment and instruments that are appropriate for a 
given engine size and emission standard. Manufacturers will be able to 
use these specifications to determine what range of engines and 
emission standards may be tested using a given laboratory or field 
testing system.
    The new content that we are proposing for part 1065 is mostly a 
combination of content from our most recent updates to other test 
procedures and from test procedures specified by the International 
Organization for Standardization (ISO). In some cases, however, new 
content is proposed that never existed in previous regulations. This 
new content addresses very recent issues such as measuring very low 
concentrations of emissions, using new measurement technology, and 
performing field testing. A full description of the changes is in the 
Technical Support Document that accompanies this proposal (this 
document is available in the docket for this rulemaking).
    The new content we are proposing also reflects a shift in our 
philosophy for specifying measurement performance. In the past we 
specified numerous calibration accuracies for individual measurement 
instruments, and we specified some performance checks for individual 
components, such as NO2 to NO converters. We have shifted 
our focus away from individual instruments and toward the overall 
performance of complete measurement systems. We did this for several 
reasons. First, some of what we specified in the past precluded the 
implementation of new measurement technologies. These new technologies, 
sometimes called ``smart analyzers'', combine signals from multiple 
instruments to compensate for interferences that were previously 
tolerable at higher emissions levels. These analyzers are useful for 
detecting low concentrations of emissions. They are also useful for 
detecting emissions from raw exhaust, which can contain high 
concentrations of interferences, such as water vapor. This is 
particularly important for field testing, which will most likely rely 
upon raw exhaust measurements. Second, this new ``systems approach'' 
challenges complete measurement systems with a series of periodic 
performance checks, which we feel will provide a more robust assurance 
that a measurement system as a whole is operating properly. Third, the 
systems approach provides a direct pathway to demonstrate that a field 
test system performs similarly to a laboratory system. This is 
explained in more detail in item 10., below. Finally, we feel that our 
systems approach will lead to a more efficient way of assuring 
measurement performance in the laboratory and in the field. We believe 
that this efficiency will stem from less frequent individual instrument 
calibrations, and higher confidence that a complete measurement system 
is operating properly.
    We organized the new content relating to measurement performance 
into subparts C, D, F, and J. We specified measurement instruments in 
subpart C and periodic performance checks in subpart D. These two 
subparts apply to both laboratory and field testing. We organized 
content specific to laboratory testing in subpart F, and specific to 
field testing in subpart J.
    In subpart C we specified the types of acceptable instruments, but 
we only recommend individual instrument performance. We provided these 
recommendations as guidance for procuring new instruments. We feel that 
the periodic performance checks that we required in subpart D will 
sufficiently evaluate the individual instruments as part of an overall 
measurement system. In subpart F we specified measurement performance 
validations that must be conducted as part of every laboratory test. In 
subpart J we specified similar measurement performance validations for 
field testing that must be conducted as part of every field test. We 
feel that the periodic performance checks in subpart D and the 
validations in subparts F and J that are required for every test ensure 
that complete measurement systems are operating properly.

[[Page 54850]]

    In subpart J we also specified an additional overall performance 
check for a field test system. This check is a comprehensive comparison 
of a field test system versus a laboratory, and it may take several 
days of laboratory time to set up, run, and evaluate. We propose that 
this performance check must be performed at least once for a given 
make, model, and configuration of a field test system. We request 
comment on whether or not we should additionally require that this 
check be performed on every individual field test system at least once. 
We request comment on whether or not we should require the end-user of 
a field test system to perform this overall check. We believe that the 
performance checks in subpart D and the test validations in subpart J 
will ensure that an individual field test system is operating properly, 
however, we request comment on whether or not this comprehensive 
overall check must also be required to completely ensure proper 
operation of an individual field test system.
    Below is a brief description of the content of each subpart, 
highlighting some of the new content.
1. Subpart A General Provisions
    In Subpart A we identify the applicability of part 1065 and 
describe how procedures other than those in part 1065 may be used to 
comply with a standard-setting part. We specify that testing must be 
conducted in a way that represents in-use engine operation, such that 
in the rare case where provisions in part 1065 result in 
unrepresentative testing, other procedures would be used. In subpart A 
we indicate the conventions we use regarding units and certain 
measurements and we discuss recordkeeping. We also provide an overview 
of how emissions and other information are used to determine final 
emission results. The regulations in Sec.  1065.15 include a figure 
illustrating the different ways we allow brake-specific emissions to be 
calculated.
    In Subpart A we describe how continuous and batch sampling may be 
used to determine total emissions. We also describe the two ways of 
determining total work. Note that the figure indicates our default 
procedures and those procedures that would require additional approval 
before we would allow them for use.
2. Subpart B Equipment Specifications
    Subpart B first describes engine and dynamometer related systems. 
Many of these specifications are scaled to an engine's size, speed, 
torque, exhaust flow rate, etc. We specify the use of in-use engine 
subsystems such as air intake systems wherever possible in order to 
best represent in-use operation when an engine is tested in a 
laboratory.
    Subpart B next describes sampling dilution systems. These include 
specifications for the allowable components, materials, pressures, and 
temperatures. We describe how to sample crankcase emissions. We also 
propose to allow limited use of partial-flow dilution for PM sampling. 
We request comment on whether or not our specifications for partial-
flow dilution and our specifications for proportional-sampling 
validation (i.e., Sec.  1065.140(d) and Sec.  1065.545) are sufficient 
for us to allow partial-flow dilution for all PM sampling without 
requiring alternate system approval.
    Subpart B also specifies environmental conditions for PM filter 
stabilization and weighing. Although these provisions mostly come from 
our recent update to part 86, subpart N, we also describe some new 
aspects in detail.
    The regulations in Sec.  1065.101 include a diagram illustrating 
all the available equipment for measuring emissions.
3. Subpart C Measurement Instruments
    Subpart C specifies the requirements for the measurement 
instruments used for testing. In subpart C we recommend accuracy, 
repeatability, noise, and response time specifications for individual 
measurement instruments, but note that we require that overall 
measurement systems meet the calibration and performance checks in 
Subpart D.
    In some cases we allow new instrument types to be used where we 
previously did not allow them. For example, we propose to allow the use 
of a nonmethane cutter for NMHC measurement, we propose to allow the 
use of non-dispersive ultra-violet analyzers for NOX 
measurement, we propose to allow the use of zirconia sensors for 
NOX and O2 measurement, we propose to allow various raw 
exhaust flow meters for laboratory and field testing measurement, and 
we propose to allow ultrasonic flow meters for CVS systems.
4. Subpart D Calibration and Performance Checks
    Subpart D describes what we mean when we specify accuracy, 
repeatability and other performance parameters. We propose calibration 
and performance checks that scale with engine size and the emission 
standards to which an engine is certified. We propose to replace some 
of what we have called ``calibrations'' in the past with a series of 
performance checks, such as a linearity check, that essentially checks 
the calibration of an instrument without specifying how the instrument 
must be initially calibrated. Because new instruments have built-in 
routines that linearize signals and compensate for various 
interferences, our typical calibration specifications sometimes 
conflicted with an instrument manufacturer's instructions. In addition 
we propose new performance checks in subpart D to ensure that the new 
instruments we specified in Subpart C are used correctly.
5. Subpart E Engine Selection, Preparation, and Maintenance
    Subpart E describes how to select, prepare, and maintain a test 
engine. We updated these provisions to include both gasoline and diesel 
engines. This subpart is relatively short, and we did not make many 
changes to its original content.
6. Subpart F Test Protocols
    Subpart F describes the step-by-step protocols for engine mapping, 
test cycle generation, test cycle validation, pre-test preconditioning, 
engine starting, emission sampling, and post-test validations. We 
propose an improved way to map and generate cycles for constant-speed 
engines. The constant-speed mapping procedure we propose better 
represents in-use engine operation. We propose a more streamlined set 
of test cycle and proportional validation criteria. We propose to allow 
modest corrections for noise and drift of emission analyzer signals 
within a certain range. We also propose a recommended procedure for 
weighing PM samples.
7. Subpart G Calculations and Required Information
    Subpart G describes all of the calculations that are required in 
part 1065. We propose definitions of statistical quantities such as 
mean, standard deviation, slope, intercept, t-test, F-test, etc. By 
defining these quantities mathematically we intend to resolve any 
potential mis-communication when we discuss these quantities in other 
subparts. We propose all of the calculations for calibrations and 
emission calculations in international units to comply with 15 CFR 
1170, which removes the voluntary aspect of the conversion to 
international units for Federal agencies. Furthermore, Executive Order 
12770 (56 FR 35801, July 29, 1991) reinforces this policy by providing 
Presidential authority and direction for the use of the metric system 
of measurement by Federal agencies and departments. For our

[[Page 54851]]

standards that are not completely in international units (i.e. grams/
horsepower-hour, grams/mile), we specify in part 1065 the correct use 
of internationally recognized conversion factors.
    We also propose to calculate emissions based on molar quantities 
for flow rates, instead of volume or mass. This change eliminates the 
frequent confusion caused by the use of different reference points for 
standard pressure and standard temperature. Instead of declaring 
standard densities at standard pressure and standard temperature to 
convert volumetric concentration measurements to mass-based units, we 
declare molar masses for individual elements and compounds. Since these 
values are independent of all other parameters, they are known to be 
constant.
8. Subpart H Fuels, Fluids, and Analytical Gases
    Subpart H specifies test fuels, lubricating oils and coolants, and 
analytical gases for testing. Because standard-setting parts for diesel 
engines now refer to part 1065, we are proposing diesel fuel 
specifications in part 1065. These fuel specifications are consistent 
with those previously adopted, with one exception. We propose to 
eliminate the Cetane Index specification for all diesel fuels because 
the existing specification for Cetane Number sufficiently determines 
the cetane levels of diesel test fuels. We propose to eliminate any 
detailed specification for service accumulation fuel. Instead, we 
propose that service accumulation fuel may be a commercially available 
in-use fuel. This change helps ensure that testing is representative of 
in-use engine operation. We propose to scale analytical gas 
specifications with the standards, which an engine must meet.
    In addition, we request comment on whether or not we should 
consider revising our specifications for ultra low-sulfur diesel test 
fuel to reflect the expected lower distillation range relative to fuels 
with higher sulfur levels. We request comment on whether or not 
widening the distillation ranges by lowering the lower limit by 5 
[deg]C would better reflect in-use diesel fuels with sulfur 
concentrations below 15 ppm. The following table shows alternative 
distillation temperatures for ultralow-sulfur diesel test fuel, with 
the lower end of the distillation ranges lowered by 5 [deg]C.

      Alternate Distillation Range for Ultra Low-sulfur Diesel Fuel
------------------------------------------------------------------------
          Distillation range                         Value
------------------------------------------------------------------------
Initial Boiling Point................  (166 to 204) [deg]C.
10% point, [deg]C....................  (199 to 238) [deg]C.
50% point, [deg]C....................  (238 to 282) [deg]C.
90% point, [deg]C....................  (288 to 332) [deg]C.
End point, [deg]C....................  (316 to 366) [deg]C.
------------------------------------------------------------------------

9. Subpart I Oxygenated Fuels
    Subpart I describes special procedures for measuring certain 
hydrocarbons whenever oxygenated fuels are used. We updated the 
calculations for these procedures in Subpart G. This subpart is 
relatively short, and we did not make many changes to its original 
content. We request comment on whether or not we should provide 
additional guidance for testing with oxygenated fuels. For example, the 
regulations currently include a general reference to 40 CFR part 86 for 
sampling procedures related to oxygenated fuels. We request comment on 
the degree to which any specific provisions in part 86 should be 
included in Subpart I.
10. Subpart J Field Testing
    Although Subpart J Field Testing existed prior to this proposal, we 
are proposing many changes to this subpart. We are proposing that in 
general, field testing equipment and measurement instruments meet the 
same specifications and performance checks that laboratory instruments 
must meet, according to subparts B, C, and D. However, for field 
testing instruments, we propose to allow certain deviations from the 
laboratory specifications. In addition to meeting many of the 
laboratory system requirements, we propose that a field test system 
meet an overall performance check versus a laboratory. This check 
involves repeating a duty cycle several times. The duty cycle itself 
must have several individual field test intervals (e.g., NTE events) 
against which the field test system is compared to the laboratory 
system. This is a comprehensive check of the field test system. We also 
propose a procedure for preparing and conducting a field test, and we 
propose additional drift and noise allowances for emission analyzers. 
Given the evolving state of portable emissions measurement technology, 
the proposed field testing procedures provide for a number of known 
measurement techniques. We request comment on the relative efficacy of 
these approaches and/or the need to consider additional methods. We 
plan to expand on this topic in an upcoming memo to the docket.
11. Subpart K Definitions, References, and Symbols
    In Subpart K we propose some new and revised definitions of 
vocabulary that we frequently use in part 1065. For example we have 
revised our definitions of ``brake power'', ``constant-speed engine'', 
and ``aftertreatment'' to provide more clarity, and we have added new 
definitions for things such as ``300 series stainless steel'', 
``barometric pressure'', and ``operator demand''. We propose 
definitions such as ``duty cycle'' and ``test interval'' to distinguish 
the difference between a single interval over which brake-specific 
emissions are calculated and the complete cycle over which emissions 
are evaluated in a laboratory. We also propose a thorough and 
consistent set of symbols, abbreviations, and acronyms. We propose to 
update our references to include references of the National Institute 
of Standards and Technology and the International Organization for 
Standardization (ISO).

II. Technical Amendments

A. Definitions and Penalties

    We are proposing to revise several definitions that apply over more 
than one part of our regulations. These changes are designed to 
harmonize our regulations.
    We are proposing to change the definition of Marine engine and 
Marine vessel to harmonize our approach to amphibious vehicles and 
clarify other issues. We have treated amphibious vehicles differently 
whether they had a diesel engine or a spark-ignition engine. We are 
proposing to harmonize our treatment of amphibious vehicles by 
consistently treating these as land-based products. We are also adding 
a provision defining amphibious vehicles are those that are designed 
primarily for operation on land to clarify that we don't consider 
hovercraft to be amphibious vehicles. See the Technical Support 
Document for additional information related to these definitions. In 
particular, note that we describe our interpretation of what it means 
for an engine to be ``installed in a marine vessel.'' Manufacturers 
have raised several questions related to this issue, especially as it 
relates to portable engines installed on barges.
    We are also considering changes to the definition for Spark-
ignition and Compression-ignition. We define Compression-ignition as 
relating to reciprocating internal-combustion engines that are not 
spark-ignition engines. We limit these definitions to reciprocating 
engines to avoid including gas turbines under the definition of

[[Page 54852]]

Compression-ignition. We currently do not have emission standards for 
gas turbines. A question has come up regarding how we should treat 
rotary engines, such as the Wankel engine. We request comment regarding 
whether the definition of Compression ignition should refer to 
``reciprocating and rotary engines'' to clarify that rotary engines not 
meeting the definition for Spark-ignition engines would fall under our 
provisions for compression ignition engines.
    We currently define Spark-ignition as follows:

    Spark-ignition means relating to a gasoline-fueled engine or any 
other type of engine with a spark plug (or other sparking device) 
and with operating characteristics significantly similar to the 
theoretical Otto combustion cycle. Spark-ignition engines usually 
use a throttle to regulate intake air flow to control power during 
normal operation.

This definition has left some confusion regarding natural gas engines 
that have a throttle, but perhaps do not clearly have operating 
characteristics that are significantly similar to the theoretical Otto 
combustion cycle. As an alternative, we are considering the following 
definition to remove this ambiguity:

    Spark-ignition means relating to a gasoline-fueled engine or any 
other type of engine with a spark plug (or other sparking device). 
Engines that use diesel fuel are not spark-ignition engines.

Such a simple approach would be very clear, but could have the effect 
of defining some natural gas engines that have operating 
characteristics that are significantly similar to the theoretical 
diesel combustion cycle as spark-ignition engines. This may be 
appropriate, but it would represent a change from our existing policy 
for these engines. We are also considering another definition, as 
follows:

    Spark-ignition means relating to a gasoline-fueled engine or any 
other type of engine with a spark plug (or other sparking device) 
and with operating characteristics similar to the theoretical Otto 
combustion cycle. Spark-ignition engines usually burn a premixed 
charge of air and fuel. Engines that use diesel fuel are not spark-
ignition engines.

This definition aims for consistency with the existing policy, but 
focuses on premixed combustion instead of the throttle to indicate 
whether natural gas engines are more appropriately regulated as 
compression-ignition or spark-ignition engines.
    We welcome comment on all of these possible definitions of spark-
ignition, as well as other possible approaches to this definition.
    The Clean Air Act specifies maximum penalty amounts corresponding 
to each prohibited Act. These maximum penalty amounts are periodically 
adjusted for inflation, based on the provisions of the Debt Collection 
Improvement Act. These maximum penalties have been updated under 40 CFR 
part 19. The new maximum penalties are $32,500 for introducing 
noncompliant engines into commerce for manufacturers guilty of 
tampering, and $2,750 for non-manufacturers guilty of tampering. In 
addition, the maximum penalty we can recover using administrative 
procedures is $270,000. We are proposing to extend these revised 
penalties into each of our emission-control programs.

B. Nonroad General Compliance Provisions (40 CFR Part 1068)

    In addition to the changing test procedures described above, we are 
proposing or considering changes that would affect multiple engine 
categories.
    We are proposing several amendments to the provisions of 40 CFR 
part 1068, which currently apply to land-based nonroad diesel engines, 
recreational vehicles, and nonroad spark-ignition engines over 19 kW. 
We encourage manufacturers of other engines to take note of these 
changes, since we intend eventually to apply the provisions of part 
1068 to all engines subject to EPA emission standards. Note that we are 
not requesting comment on the whole range of provisions in part 1068, 
but rather on those items that are included in this proposal. These 
changes include the following:
     Section 1068.10: Clarify confidentiality provisions to 
address how we treat information that we collect from on-site visits or 
testing, as opposed to information that manufacturers send to us.
     Section 1068.30: Add or correct definitions to coordinate 
with the standard-setting parts and clarify various terms.
     Section 1068.105: Expand paragraph (a) to better explain 
requirements for equipment manufacturers to use current model-year 
engines. This relates especially to the existing provision that allows 
equipment manufacturers to use up their normal inventories of engines 
from previous model years in cases where a new emission standard takes 
effect. We propose to change Sec.  1068.101(a)(1) to reflect these 
changes.
     Section 1068.110: Clarify that the manufacturers' warranty 
obligation includes all expenses related to diagnosing and repairing or 
replacing emission-related parts. This is not intended to include 
incidental expenses (such as replacement units during warranty 
service), consequential damage (such as damage caused by engine 
malfunction), or opportunity costs (such as foregone revenue from 
engine downtime).
     Section 1068.115: Add text to paragraph (a) to provide a 
complete list of reasons for manufacturers to deny warranty claims. 
This clarifies that the list of reasons given in paragraph (b) is 
descriptive, and is not intended to be comprehensive.
     Section 1068.245: Clarify that manufacturers applying for 
hardship must use the provisions of Sec.  1068.250 (if applicable) 
before applying for hardship under Sec.  1068.245. This is necessary to 
remove the ambiguity resulting from the current approach, which 
specifies that both Sec. Sec.  1064.245 and 1068.250 are provisions of 
last resort.
     Section 1068.260: Clarify that including the cost of 
separately shipped components means that the cost of shipping must also 
be addressed.
     Section 1068.265: Add provisions that clarify what 
manufacturers must do when they are required to meet emission standards 
for engines that are not certified. A typical example would be an 
exemption that applies to new engines that replace an old engine that 
was certified to emission standards. We already require these engines 
to have the same degree of emission control as the replaced engine. We 
do not want manufacturers to certify these engines, but we are 
proposing to add requirements to clarify how manufacturers can show 
that the new engines meet an older set of emission standards. This 
involves either using an engine that is the same as one that was 
certified in an earlier model year, or performing tests to show that 
the engines meet the specified emission levels. In any case, 
manufacturers would not need to go through the process or pay the fees 
associated with certification. We recently adopted these same 
provisions for nonroad diesel engines and are proposing to extend them 
to the other engine categories covered by part 1068.
     Section 1068.315: Reduce the ownership requirement for the 
identical configuration exemption from one year to six months; also, 
change the qualifying criterion from ``the same as'' to ``identical 
to.''
     Section 1068.410: Add provisions allowing manufacturers to 
test engines up to three times total if an engine family reaches a fail 
decision under selective enforcement auditing, consistent with the 
provisions that apply under most of our programs.

[[Page 54853]]

     Section 1068.510: Clarify that manufacturers must describe 
the qualifications of repair personnel, rather than simply stating that 
they are qualified.

C. Land-based Nonroad Diesel Engines (40 CFR Parts 89 and 1039)

    We recently adopted a new tier of emission standards for nonroad 
diesel engines, codifying these standards in 40 CFR part 1039. This 
rulemaking led us to make several regulatory changes to the existing 
tiers of standards for these engines in 40 CFR part 89. In cases where 
we discovered the need for changes after publishing the proposed rule, 
but we did not make those changes to part 89 in the final rule out of 
concern that the public had not had an opportunity for comment. 
Similarly, we are proposing some adjustments to part 1039, based on 
information that surfaced late in that rulemaking. We are proposing the 
following changes in part 89 and part 1039:
     Section 89.102: Clarify that equipment manufacturers using 
allowances under this section may use lower-emitting engines than we 
currently require.
     Section 89.110 and Sec.  89.1009: Allow manufacturers to 
identify a different company's name and trademark on the emission 
control information label, with additional provisions to ensure that 
operators take certain steps to ensure that operators have the full 
benefit of the emission-related warranty.
     Section 89.130: Refer to the nearly identical provisions 
for rebuilding engines in Sec.  1068.120.
     Section 89.410: Allow manufacturers to use ramped-modal 
testing, as specified for engines that must meet the Tier 4 standards.
     Appendix A to subpart F: Correct the ranges of values to 
address an unintentional gap for sales volumes between 300 and 500.
     Section 89.603: Clarify that standards applicable to 
Independent Commercial Importers (ICIs) are those of the year in which 
the imported engine was originally produced, for up to five engines per 
year. See the Technical Support Document and the discussion below 
related to highway engines and vehicles for additional information.
     Sections 89.913 and 89.914: Allow engine and equipment 
manufacturers to use the engine-dressing provisions in Sec. Sec.  
1039.605 and 1039.610.
     Section 89.1003: Clarify that engine manufacturers may 
ensure that the replaced engine is destroyed instead of taking 
possession of it; add a new label requirement for replacement engines 
that are allowed to meet a less stringent set of standards that are in 
effect when the replacement engine is built (to address the case where 
the engine being replaced was subject to emission standards less 
stringent than the current standards).
     Section 89.1003: Clarify that violating the requirements 
to rebuild an engine to its original configuration is considered 
tampering with respect to the applicable penalties.
     Section 89.1 and Sec.  1039.5: Allow manufacturers to 
include marine auxiliary engines in an engine family certified under 
part 89 or 1039, subject to certain limitations.
     Section 1039.1: Clarify that residence-time limits do not 
apply to engines used in stationary applications if they have been 
certified to nonroad emission standards.
     Section 1039.104, 1039.625, and 1039.655: Change cross-
reference from Sec.  1039.260 to Sec.  1068.265.
     Section 1039.125: Clarify that a manufacturer's obligation 
to pay for scheduled maintenance under certain situations is limited to 
the useful life of the engine.
     Section 1039.225: Include a modified FEL as the basis for 
a change to the application for certification, consistent with current 
practice.
     Section 1039.240: Adding section references that were 
inadvertently omitted.
     Section 1039.510: Remove provisions that are covered by 
part 1065.
     Section 1039.605 and Sec.  1039.610: Clarify the ABT 
responsibilities relative to engines or vehicles that are certified 
under the motor-vehicle program and used in nonroad applications.
     Section 1039.705: Add a constraint for averaging, banking, 
and trading to prevent manufacturers from including credits earned in 
California if there would ever be a situation where they are required 
to meet separate standards in California (or another state).
     Section 1039.740: Correct the provisions allowing the use 
of emission credits to from previous tiers of emission standards to 
include an item that was inadvertently omitted from the Tier 4 final 
rule, as described in the preamble to that final rule.
     Section 1039.801: Update various definitions to reflect 
the change to move the full text of these definitions to part 1068.
    In the Tier 4 final rule, we adopted a revised provision allowing 
manufacturers to request a useful life shorter than that specified for 
engines generally. Our recent experience with a similar provision for 
marine diesel engines has shown that it can be difficult to implement. 
The main difficulty relates to the extent and quality of the 
information manufacturers must supply to establish an alternate useful-
life period. As a result, we are interested in changing this provision. 
A similar provision has been in place in part 89 since the beginning of 
emission standards, but we are not aware of anyone requesting a shorter 
useful life for any particular application. In the similar 
consideration of this provision for nonroad spark-ignition engines, the 
only manufacturers that we would expect to consider a shorter useful 
life would be for engines used in concrete saws, concrete pumps or 
similar severe-duty applications. To establish a shorter useful life 
for a set of engines, manufacturers would need to establish a separate 
engine family and pay the associated fees for certification. It is not 
clear that any manufacturer of nonroad diesel engines would make the 
extra effort or face the extra expense of segregating a family for a 
shorter useful life. We therefore request comment on removing this 
provision. We also request comment on the approach under consideration 
for spark-ignition engines, namely to remove the current approach of 
requesting a shorter useful life and replacing it with a useful life of 
1500 hours for engines used in concrete saws, concrete pumps, and 
similar severe-duty engines. The useful life in years would be the same 
for all engines.
    During the Tier 4 rulemaking, equipment manufacturers raised a 
concern regarding diesel engines certified to meet Tier 4 standards 
based on the use of catalyst technology relying on ultra low-sulfur 
fuel, where those engines are exported to countries with a higher 
sulfur content in diesel fuel. Many pieces of equipment may be designed 
and manufactured for the U.S. domestic market and eventually sold to an 
end-user that may use the equipment outside of the United States. The 
resulting damage to the emission-control system after extended exposure 
to the higher sulfur fuel could permanently reduce the effectiveness of 
emission controls. One possible solution would be to require that 
engines exported from the United States have the engine label and the 
aftertreatment removed before shipping the engine. This in effect 
invalidates the engine's certification, which would make it illegal to 
continue to use the engine in the United States, or to later import the 
engine back into the United States. Two potential drawbacks include 
reconciling the total balance of emission credits under the averaging, 
banking, and

[[Page 54854]]

trading program and reconciling the use of the engine in an existing 
flexibility program. Alternatively, we could require tracking engines 
and documenting end-use status once it has been placed in equipment. We 
seek comment on the use of such a provision to prevent re-importation 
of engines that are exposed to fuel sulfur levels that would be 
considered tampering if it occurred in the United States.

D. Marine Diesel Engines (40 CFR Part 94)

    We are proposing several changes to our diesel marine engine 
program, in 40 CFR part 94. These changes are intended to clarify 
several aspects of the program. These changes, which are described in 
more detail in the Technical Support Document, are as follows:
     Section 94.2: Modify the definitions of ``marine engine'' 
and ``marine vessel'' and add a new definition of ``amphibious 
vehicle'' to clarify what kinds of amphibious vehicles are not 
considered marine vessels; modify the definition of ``United States'' 
to remove the reference to the Trust Territories of the Pacific 
Islands.
     Section 94.904: Allow the sale of an exempted or excluded 
engine if it is certified or identical to a certified engine.
     Section 94.907: Allow vessel manufacturers to take 
advantage of the engine dresser provisions; clarify the reporting 
requirement to specify that the total number of dressed engines 
produced by all companies dressing that base engine for use in a marine 
vessel is less than 50 percent of total annual sales for the base 
engine; add language clarifying the requirements related to generating 
and using emission credits with these engines.
     Section 94.912: Exempt marine auxiliary engines from the 
part 94 requirements as long as they are included in an engine family 
certified under part 1039 or 89, subject to certain limitations.
     Section 94.1001: Revise applicability to clarify that the 
provisions in Subpart K apply to manufacturers, owners, and operators 
of marine vessels that contain engines with per-cylinder displacement 
of at least 2.5 liters.
     Section 94.1103: Clarify that the engine manufacturer may 
ensure that the replaced engine is destroyed instead of taking 
possession of it; add a new label requirement for replacement engines 
that are allowed to meet a less stringent set of standards than are in 
effect when the replacement engine is built (to address the case where 
the engine being replaced was subject to less stringent emission 
standards).
    The Technical Support Document also clarifies the conditions under 
which an auxiliary engine used on a marine vessel will be considered a 
marine auxiliary engine and be subject to 40 CFR 94.

E. Small Nonroad Spark-Ignition Engines (40 CFR Part 90)

    We are proposing to add a new section 90.913 to better define the 
responsibilities for manufacturers choosing to certify their engines 
below 19 kW to the emission standards for Large SI engines in 40 CFR 
part 1048. We are also revising section 90.1 to cross-reference 
provisions in parts 86, 1048, and 1051 that allow highway motorcycle 
engines and nonroad engines above 19 kW to meet the requirements in 
part 90 under certain conditions.
    We have adopted a new approach to define maximum engine power in 40 
CFR part 1039 for nonroad diesel engines for purposes of defining the 
applicability of standards. This definition includes a detailed 
procedure for determining this value. The current approach for Small SI 
engines is to rely on a definition of ``gross power'' that describes 
generally how to characterize an engine's maximum power. We request 
comment on adopting the new definition of maximum engine power in 40 
CFR part 90. This would have the advantage of harmonizing our treatment 
of this basic tool to characterize engines and would allow for 
consistent treatment across programs. See the Technical Support 
Document for more information.
    In addition, we are updating current references to test procedures 
in 40 CFR part 86 by pointing instead to 40 CFR part 1065. 
Manufacturers are also encouraged to review the proposed provisions in 
40 CFR part 1065, since we intend eventually to apply those same 
procedures to Small SI engines. In particular, we have noted that the 
equations in Sec.  90.426(b) and (d) for calculating mass flow rate and 
dilution factor differ from the comparable equations in part 1065, 
subpart G. We request comment on applying the equations from part 1065, 
subpart G, to Small SI engines for calculating these values.

F. Marine Spark-Ignition Engines (40 CFR Part 91)

    We are proposing only minimal changes for marine SI engines in 40 
CFR part 91. These changes are primarily to update current references 
to test procedures in 40 CFR part 86 by pointing instead to 40 CFR part 
1065. We are also updating various definitions, as described in Section 
II.A. Manufacturers are also encouraged to review the proposed 
provisions in 40 CFR part 1065, since we intend eventually to apply 
those same procedures to marine SI engines.

G. Large Nonroad Spark-Ignition Engines (40 CFR Part 1048)

    We adopted emission standards for nonroad spark-ignition engines 
over 19 kW in November 2002 (67 FR 68242). The regulations in 40 CFR 
part 1048 were our first attempt to draft emission-control regulations 
in plain-language format. In the recent final rule for nonroad diesel 
engines, we went through a similar process, including extensive 
interaction with a different set of manufacturers. This process led us 
to adopt regulatory provisions in 40 CFR part 1039 that differ somewhat 
from those in part 1048. Since the process of meeting standards, 
applying for certificates, and complying with other emission-related 
requirements has a lot of commonality across programs, we have a strong 
interest in adopting consistent provisions and uniform terminology 
where possible. As a result, we are proposing extensive changes in part 
1048 to align with the regulations in part 1039. Many of these changes 
reflect minor wording differences. The more significant changes to part 
1048 include the following:
     Section 1048.105: Exclude marine fuel tanks from the 
standards for evaporative emissions. This is appropriate, because the 
fuel-hose requirements are incompatible with Coast Guard requirements 
and because we are developing a separate emission-control program that 
would apply to all fuel tanks associated with marine spark-ignition 
engines.
     Section 1048.135: Add a requirement for manufacturers to 
supply duplicate labels. This corresponds with the recently adopted 
provisions of 40 CFR 1068.105(c) that ensure that equipment 
manufacturers will take steps to prevent the misuse of duplicate 
labels.
     Section 1048.135: Allow manufacturers to identify a 
different company's name and trademark on the emission control 
information label, with additional provisions to ensure that 
manufacturers take certain steps to ensure that operators have the full 
benefit of the emission-related warranty.
     Section 1048.145: Add detailed provisions to the family-
banking provisions to better define the qualifying criteria and the 
process for using this provision. For example, we

[[Page 54855]]

establish a date by which manufacturers must begin production of early-
compliant engines to avoid giving credits for marginal early 
production, we clarify that the late-complying engines must continue to 
meet the Tier 1 standards, and we add a requirement that manufacturers 
report the number of engines they produce under this provision to allow 
us to verify compliance.
     Section 1048.310: Clarify that the maximum testing rate of 
1 percent for production-line testing applies only after testing the 
minimum number of engines specified.
     Section 1048.501: Allow an optional procedure for 
measuring diurnal emissions from plastic fuel tanks. This addresses the 
fact that we intended to control diurnal emissions from fuel tanks, not 
permeation emissions. This will have minimal environmental impact, 
since plastic fuel tanks are rarely used with industrial spark-ignition 
engines. While we may consider adding permeation controls in the 
future, we are proposing to adopt procedures that would not require 
upgrades to plastic fuel tanks at this time.
     Section 1048.505: Allow manufacturers to use ramped-modal 
testing for simplified measurement of steady-state emission results. 
See the Technical Support Document for additional discussion or ramped-
modal testing.
    For discussion of additional changes, see the Technical Support 
Document.
    In the November 2002 final rule, we adopted a provision allowing 
manufacturers to request a useful life shorter than that specified for 
engines generally. Our recent experience with a similar provision for 
marine diesel engines has shown that it can be difficult to implement. 
The main difficulty relates to the extent and quality of the 
information manufacturers must supply to establish an alternate useful-
life period. As a result, we are interested in changing this provision. 
As far as we are aware, the only manufacturers that might reasonably 
consider a shorter useful life would be for engines used in severe-duty 
applications. To establish a shorter useful life for a set of engines, 
manufacturers would need to establish a separate engine family and pay 
the associated fees for certification. During the rulemaking, 
manufacturers of these engines suggested that their engines rarely 
operate longer than 1500 hours. We therefore request comment on 
removing the current approach of requesting a shorter useful life and 
replacing it with a useful life of 1500 hours for severe-duty engines. 
The useful life in years would be the same for all engines.
    Starting in the 2007 model year, manufacturers must show that they 
meet emission standards over a transient duty cycle. The specified 
transient duty cycles were based on real-world operation from in-use 
engines. While these duty cycles were extensively tested with a variety 
of engines over the course of the rulemaking, we have learned that 
certain high-speed engines may not be able to sufficiently match the 
speed-load trace in the duty cycle to meet cycle-validation criteria. 
The cycle was developed with engines that were designed with governed 
speeds around 3000 rpm. For example, for engines with governed speeds 
of 3600 rpm or higher, the denormalized duty cycle may have exaggerated 
acceleration rates that exceed an engine's capability.\2\ In this 
situation, manufacturers would be able to use a modified duty cycle 
under the provisions for special test procedures in 40 CFR 1065.10. We 
request comment on the need for using the provision for special test 
procedures to address this situation. We also request comment on 
whether it would be appropriate to make cycle-related adjustments in 
the regulation. This could take the form of relaxed values for cycle 
validation criteria, limits to cap acceleration rates, using different 
maximum-speed and maximum-torque values for denormalizing, or other 
approaches.
---------------------------------------------------------------------------

    \2\ The prescribed duty cycle is a normalized sequence of speeds 
and loads expressed as a percentage of an engine's maximum values. 
Before testing, these percentage values must be denormalized into 
rpm and N-m values that are specific to the test engine based on its 
maximum speed and torque capabilities.
---------------------------------------------------------------------------

H. Recreational Vehicles (40 CFR Part 1051)

    We are proposing to make several adjustments and clarifications to 
the regulations for recreational vehicles in part 1051, including the 
following:
     Clarify the characteristics for evaporative emission 
families to include items we inadvertently omitted from the November 
2002 final rule, and make it clearer how evaporative and exhaust 
emission families relate to each other.
     Clarify the evaporative test procedures regarding steps to 
seal the fuel tank.
     Define ``Fuel lines'' to remove uncertainty related to 
which products are subject to permeation standards.
     Specify a maximum 8-hour time period between refueling and 
starting the permeation test run and clarify that extending permeation 
testing from two weeks to four weeks depends on establishing a linear 
change in emissions based on daily measurements.
     Clarify that youth-model ATVs and off-highway motorcycles 
count toward meeting the phase-in requirements.
     Remove the ATV FEL cap for carbon monoxide, which was 
inadvertently left in the final regulations.
     Specify that the warranty period may be based on hours of 
engine operation in addition to odometer readings.
     Allow rounding of Normalized Emission Rates to one decimal 
place, rather than to the nearest whole number, and adding additional 
equations for smaller engines.
     Change the minimum useful life for youth-model ATVs and 
off-highway motorcycles to 5,000 kilometers and 500 hours.
     Allow all ATVs certifying to J1088 to use the raw gas 
sampling provisions of Part 91 for engine testing through the 2008 
model year, which was intended in the November 2002 final rule.
     Allows manufacturers to test engines based on an engine's 
maximum power if that better represents in-use operation, rather than 
using the specified procedure to establish maximum test speed.
     Adopt a speed threshold to exclude low-speed all-terrain 
vehicles from part 1051. For example, low-speed amphibious vehicles not 
meeting the definition of offroad utility vehicles would be covered by 
part 90 instead of part 1051.
    These provisions are all discussed in more detail in the Technical 
Support Document. In addition, we request comment regarding whether it 
is appropriate to adopt a ramped-modal test method as an alternative 
for the steady-state tests applicable to recreational vehicles under 
Sec.  1051.505 and Sec.  1051.615. This is also discussed in more 
detail in the Technical Support Document.
    We adopted emission standards for recreational vehicles in November 
2002 (67 FR 68242). The regulations in 40 CFR part 1051 were our first 
attempt to draft emission-control regulations in plain-language format. 
In the recent final rule for nonroad diesel engines, we went through a 
similar process, including extensive interaction with a different set 
of manufacturers. This process led us to adopt regulatory provisions in 
40 CFR part 1039 that differ from those in part 1051. Since the process 
of meeting standards, applying for certificates, and complying with 
other emission-related requirements has a lot of commonality across 
programs,

[[Page 54856]]

we have a strong interest in adopting consistent provisions and uniform 
terminology as much as possible. As a result, we are proposing 
extensive changes in part 1051 to align with the regulations in part 
1039. Many of these changes reflect minor wording differences. The more 
significant changes to part 1051 include the following:
     Section 1051.135: Allow manufacturers to identify a 
different company's name and trademark on the emission control 
information label, with additional provisions to ensure that operators 
take certain steps to ensure that operators have the full benefit of 
the emission-related warranty.
     Section 1051.135: Add a requirement for manufacturers to 
supply duplicate labels. This corresponds with the recently adopted 
provisions of 40 CFR 1068.105(c) that ensure that equipment 
manufacturers will take steps to prevent the misuse of duplicate 
labels.
     Section 1051.135: Add a requirement to include the hang-
tag label with normalized emission rates in the application for 
certification.
     Section 1051.225: For situations where the Family Emission 
Limit changes during a model year, the manufacturer calculates the 
credit balance for the family based on the FEL that applies for the 
corresponding production volume. This allows manufacturers to generate 
more credits (or use fewer credits), but this is consistent with the 
fact that manufacturers are liable for the emission-control performance 
of each engine relative to the FEL that applied at the point of 
production.
     Section 1051.501: Add ``or add'' in paragraph (b)(2) to 
clarify that the addition of fuel would not be allowed after the first 
weight measurement is taken in the permeation test run.
     Section 1051.705: Add a constraint for averaging, banking, 
and trading to prevent manufacturers from including credits earned in 
California if there would ever be a situation where they are required 
to meet separate standards in California (or another state).
     Section 1051.505 and 1051.615: We request comment on 
adding an option to allow manufacturers to conduct steady-state testing 
using ramped-modal cycles, as described in the Technical Support 
Document.
    We request comment on all these changes to part 1051.

I. Locomotives (40 CFR Part 92)

    We are proposing a variety of changes for our locomotive 
regulations in 40 CFR part 92 to make correct various technical 
references and typographical errors. See the Technical Support Document 
and the proposed regulations for additional information.
    In addition, we are requesting comment on a few additional items. 
The Engine Manufacturers Association recommended several revisions to 
the locomotive regulations.\3\ We are proposing many of these changes, 
and are requesting comment on those that we are not proposing. We are 
especially interested in comments related to EMA's request to revise 
the accuracy specifications found in Sec. Sec.  92.104(b)(1)(i), 
92.105(d), 92.106(b)(1)(ii), 92.107(a)(1), and 92.126(b)(3). These 
comments generally express a concern that the adopted specifications 
require too much precision or accuracy. We request further comment on 
the achievable level of precision and accuracy for these 
specifications, and on the degree to which we should change the 
specified values.
---------------------------------------------------------------------------

    \3\ ``Recommended Technical Amendments to EPA Tier 0/1/2 
Locomotive Rule,'' Handout from the Engine Manufacturers 
Association, October 2003 (Docket OAR-2004-0017-0002).
---------------------------------------------------------------------------

    The standards for locomotive engines currently do not apply to 
engines used in locomotives if they have a maximum power below 750 kW. 
These engines are generally designed and manufactured for other 
applications, so they are excluded from locomotive standards and 
procedures. We have received a request that we allow engines below 750 
kW that are used in locomotives to optionally certify to locomotive 
standards instead of the otherwise applicable requirements of 40 CFR 
part 89.\4\ This commenter suggested the following addition to the 
regulations in 40 CFR part 92:
---------------------------------------------------------------------------

    \4\ ``Inclusion of the Railpower Green Goat Hybrid Locomotive 40 
CFR 92 Averaging, Trading, and Banking'' e-mail from Christopher 
Weaver, Railpower, May 7, 2004 (Docket OAR-2004-0017-0003).
---------------------------------------------------------------------------

    The manufacturer or remanufacturer of a vehicle propelled by an 
engine rated less than 750 kW, but that otherwise meets all the 
requirements of this definition may elect to have it treated under this 
part rather than under part 89 by giving written notice of such 
election to the Administrator. All of the provisions of this part shall 
apply to vehicles for which such an election is made.
    We continue to believe that engines below 750 kW should be 
regulated as nonroad diesel engines under part 89. However, we request 
comment on this suggestion to allow manufacturers to optionally meet 
the standards in part 92 instead. We also request comment regarding the 
applicability of the line-haul emission standards to these low-power 
locomotive engines. Finally, we request comment on alternate 
calculations to address the equivalent tractive horsepower of hybrid 
locomotives.

J. Highway Engines and Vehicles (40 CFR Part 86)

1. Light-duty Vehicles
    a. Calculation Method for Nonmethane Hydrocarbons. Text changes are 
proposed to properly align EPA and CARB calculation methods for 
measuring nonmethane hydrocarbons from gasoline, diesel, methanol, 
ethanol, and liquefied petroleum gas fueled light-duty vehicles. 
Harmonization of EPA and CARB testing and calculation practices, 
including proper accounting for the methane response of the total 
hydrocarbon FID, was anticipated when Tier 2 regulations were 
developed. Modifying the language in 86.121-90(d) and 86.144-
94(c)(8)(vi) to explicitly require the use of a measured methane 
response factor, as opposed to the current CFR text which specifies an 
assumed methane response factor of 1.0, will align the calculation 
methods. Calculating nonmethane hydrocarbon using a measured methane 
response factor is the technically correct calculation and measurement 
method.
    b. Correction to Tier 2 Regulations. On December 6, 2002, we made 
some minor technical amendments to EPA's Tier 2/Gasoline Sulfur 
regulations (67 FR 72821, December 6, 2002). However, those actions 
mistakenly reversed a prior correction to Table S04-2 in Sec.  86.1811-
04(c)(6) that was made on February 28, 2000 (65 FR 10598, February 28, 
2000). We are now reestablishing the correct version of that table. 
Specifically, in Sec.  86.1811-04(c)(6), in Table S04-2, the ``Notes'' 
entry corresponding with ``Bin No. 9'' should read ``a b e f g h''.
    c. Correction to Supplemental Federal Test Procedure Regulations. 
We propose to make the following corrections to regulatory references, 
spelling, and the like with these technical amendments:
     An incorrect regulatory reference is corrected in section 
86.158-00;
     Revision to section 86.161-00 inserts the correct humidity 
tolerance of plus-or-minus 5 grains of water/pound of dry air; and
     Revision to the equation in section 86.164-00 adds plus 
(``+'') signs that were omitted in the regulations.
    d. Correction to National Low Emission Vehicle Regulations. In 
several places in the National Low Emission Vehicle (NLEV) emissions 
standards

[[Page 54857]]

there are typographical errors affecting emission standards and testing 
provisions which require correction:
     Incorrect in-use formaldehyde standards for light-duty 
vehicles in tables R99-5 and R99-6 (Sec.  86.1708-99).
     Incorrect model year applicability of in-use standards for 
light-duty trucks (Sec.  86.1709-99(c)(1)).
     Missing standards for light-duty trucks from 0-3750 loaded 
vehicle weight in Table R99-14.2 (Sec.  86.1709-99).
     Correction of fleet average NMOG standards for calculating 
credits for 1997 and 1998 model years in the Northeast Trading Region 
(Sec.  86.1710-99(c)(8)).
     Correcting a reference to 86.1705-99(e)(4) that should 
have been to 86.1707-99(d)(4) (Sec.  86.1711-99).
2. Highway Motorcycles
    a. Highway Motorcycle Labeling Requirements. On January 15, 2004, 
we finalized new emission standards for highway motorcycles (69 FR 
2398, January 15, 2004). These new standards are implemented in two 
stages: a ``Tier 1'' that is effective in the 2006 through 2009 model 
years, and a ``Tier 2'' that takes effect starting with the 2010 model 
year. These standards are generally harmonized with California emission 
standards that take effect two years earlier. Under the new standards, 
Class III motorcycles must comply with a new HC+NOX emission 
standard on a corporate average basis. This new flexibility allows 
manufacturers to market motorcycles that produce more pollution than 
the designated average standard as long as they are balanced out by 
sales of less-polluting models such that the manufacturers' sales-
weighted corporate average remains below the standard. Averaging is 
also optionally allowed for Class I and II motorcycles.
    Since publishing the final rule, however, we realized that the 
labeling language for highway motorcycles is not helpful in the context 
of the new averaging standard. The current federal labeling language 
(see 40 CFR 86.413-78) only requires that a motorcycle label indicate 
compliance with EPA standards for a given model year. This is all that 
is needed when there is no uncertainty regarding what the applicable 
emission standards are. In the context of the type of averaging program 
we finalized, however, the manufacturers essentially choose their own 
emission standard (up to a cap) for each engine family. The 
manufacturer-selected emission standard is known as a ``Family Emission 
Limit,'' or FEL. For example, a manufacturer with two engine families 
might market one meeting a standard of 2.2 grams/mile HC+NOX 
and another one meeting a standard of 0.5 grams/mile HC+NOX. 
If these are equally-selling engine families, then the manufacturer 
will meet the required Tier 1 average of 1.4 grams/mile 
HC+NOX.
    In the case described above, a label with only the model year will 
not provide adequate information regarding the applicable emission 
standard. Historically both EPA and ARB have required labels that 
identify the specific applicable FEL for vehicles certified under 
averaging programs. Therefore, we are amending the labeling 
requirements with two goals in mind. First, the label must provide 
sufficient information regarding the applicable emission standard and 
model year, as well as specific tune-up information. Second, the label 
requirements should be aligned with ARB to the greatest degree possible 
to prevent a situation where the manufacturer has to apply two labels 
to a motorcycle to meet two different sets of requirements. The new 
labeling language in 40 CFR 86.413-2006 accomplishes both of these 
goals.
    b. Highway Motorcycle Fuel Specifications. In our final rule 
setting new emission standards for highway motorcycles (69 FR 2398, 
January 15, 2004) we updated the fuel specifications for motorcycle 
emission testing to be consistent with the fuel specifications 
finalized on February 10, 2000, as part of our ``Tier 2 Motor Vehicle 
Emissions Standards and Gasoline Sulfur Control Requirements'' (65 FR 
6697, February 10, 2000). This was necessary to ensure that motorcycles 
are tested using fuels consistent with those available in the 
marketplace. We received no negative comments on making this change. It 
is necessary at this time to correct some errors that were made in 
updating the motorcycle test fuel specification. The specific 
corrections are:
     Changing the volume percent of aromatics from ``35 
minimum'' to ``35 maximum'';
     Changing the phosphorous g/liter specification from 0.005 
g/liter to 0.0013 g/liter (the alternative specification is 0.005 g/
U.S. gallon);
     Changing the sulfur weight percent from 0.08 maximum to 
0.008 maximum; and
     Changing the volatility test procedure from ``ASTM D 
3231'' to ``ASTM D 323.''
    c. Highway Motorcycles with engines below 50 cc. We are proposing 
modified language in Sec.  86.447 and Sec.  86.448 to clarify various 
aspects of the provision allowing manufacturers to use products 
certified to nonroad emission standards instead of the standards for 
highway motorcycles under part 86. These changes include the following:

--Clarify the requirement related to the number of engines that may be 
certified under nonroad programs.
--Define the requirements related to generating and using emission 
credits with these engines.
--Add language to better define the legal responsibilities for 
companies involved in producing motorcycles under this provision.
3. Heavy-Duty Highway Engines
    As discussed above, we are proposing to adopt the lab-testing and 
field-testing specifications in part 1065 for heavy-duty highway 
engines, including both diesel and Otto-cycle engines. These procedures 
replace those currently published in 40 CFR part 86 subpart N. We are 
proposing a gradual transition from the part 86 procedures over a 
period of two model years in order to fully migrate to part 1065, no 
later than model year 2008. Manufacturers would not need to conduct new 
testing if they are able to use carryover data, but any new testing for 
2008 and later model years would be done using the part 1065 
procedures. Migrating heavy-duty highway engines to the part 1065 
procedures allows us to include all the testing-related improvements in 
the HD2007 rule, including those we have adopted through guidance.\5\ 
In addition, part 1065 incorporates revisions based on updated 
procedures for sampling low concentrations of PM.
---------------------------------------------------------------------------

    \5\ ``Guidance Regarding Test Procedures for Heavy-Duty On-
Highway and Non-Road Engines,'' December 3, 2002.
---------------------------------------------------------------------------

    We are also proposing to require manufacturers to use ramped-modal 
testing to show that they meet steady-state emission standards using 
the Supplemental Emissions Test (SET), which will be required for model 
year 2007 and later engines. The conventional approach for steady-state 
testing is to measure emissions separately for each mode. Ramped-modal 
testing involves a single, continuous emission measurement as the 
engine operates over the test modes in a defined sequence, including 
short transition segments between modes. Ramped-modal testing offers 
several advantages, primarily that of increased accuracy for measuring 
very low levels of PM emissions. See the Technical Support Document for 
additional information on the advantages of ramped-modal testing.
    We are also clarifying that certain data requirements related to 
Supplemental Emission Testing are required only

[[Page 54858]]

when engines are subject to Maximum Allowable Emission Limits.
    Part 1065 bases the denormalized duty cycle on ``maximum test 
speed,'' which differs somewhat from the traditional approach from part 
86 of relying on rated speed. We request comment on whether or not we 
need to adjust how maximum test speed is applied to heavy-duty highway 
diesel engines to better represent in-use operation. Specifically, we 
request comment on whether or not we should specify that maximum test 
speed should be equal to the 112% speed from the duty cycle for this 
particular sequence. This would shift the prescribed speeds that are in 
excess of 100% speed to be no greater than 99.92% of maximum test 
speed. This adjustment would prevent excessive speeds, while ensuring 
our intent to specify maximum test speed to test an engine over its 
complete operating range.
    We are proposing a minor adjustment to the phase-in process for the 
HD2007 standards to allow manufacturers to make their compliance 
demonstration either on the basis of model years or calendar years. 
This increases the flexibility for manufacturers to define their model 
year without affecting their ability to show that they meet their 
phase-in obligations. Because the phase-in period is three years under 
either approach, we believe this adjustment would not harm the 
environmental objectives of the program.
    In the recently finalized Nonroad Diesel Tier 4 final rule, we 
included new regulatory provisions allowing engine manufacturers to 
ship engines and aftertreatment separately to equipment manufacturers, 
provided several criteria were met (69 FR 39308, June 29, 2004). These 
criteria were based on two main principles. First, the engine 
manufacturer is responsible to ensure that equipment manufacturers are 
fully aware of their responsibilities for proper installation of the 
engine and catalyst system. Second, the engine manufacturer has the 
primary responsibility for ensuring the engine and catalyst are 
properly installed. While the engine manufacturer has the primary 
responsibility, we may also find the equipment manufacturer liable 
under certain circumstances. We request comment on applying similar 
provisions to allow separate shipment of engines and aftertreatment for 
heavy-duty highway engine manufactures, including both gasoline and 
diesel engines. In addition, we request information that would indicate 
to what extent the heavy-duty highway engine/catalysts/vehicle 
manufacturer business relationships are similar to those for nonroad 
diesel engines, and whether the same provisions should apply to the 
companies producing highway engines and vehicles as we have adopted for 
the nonroad diesel engines and equipment.
    We are taking this opportunity to clarify an aspect of the 
information reporting requirements described in a recently proposed 
rule making for manufacturer in-use testing of heavy-duty vehicles. The 
Notice of Proposed Rule Making (NPRM) for the manufacturer-run in-use 
testing program (FR Cite) was issued June 3, 2004. Section K in the 
preamble provides a non-exhaustive example of the types of engine 
parameters commonly stored in the engine's on-board computer and 
requires manufacturers to report those parameters which are readily 
available. We want to be clear that not only should those parameters be 
reported to EPA, but that they also must be reported to and stored by 
any portable emissions measurement system used to meet the testing 
requirements described in the NPRM. Because the proposed regulatory 
language in 40 CFR part 1065, subpart J contained in today's notice 
does not contain all of the parameters we intended to be required in 
the manufacturer in-use testing program, we expect that section 
86.1920(a)(4)(xii) in the final in-use testing regulations will contain 
language that will better reflect this intent and make explicit the 
types of parameters that may be subject to the reporting requirements. 
Specifically, the current language in 86.1920(a)(4)(xii) states:

    Recorded one-hertz test data for all the parameters specified in 
40 CFR part 1065, subpart J, including any other relevant parameters 
electronically sensed, measured, calculated, or otherwise stored by 
the engine's onboard computer. This also includes any parameters 
used to modulate the emission-control system.

    The final language would state:

    Recorded one-hertz test data for all the parameters specified in 
40 CFR part 1065, subpart J, and any other relevant parameters 
electronically sensed, measured, calculated, or otherwise stored by 
the engine's onboard computer, including but not limited to engine 
speed, engine torque, engine coolant temperature, intake manifold 
temperature, manifold absolute pressure, barometric pressure 
(altitude), ambient temperature, brake specific fuel consumption, 
exhaust temperature upstream of aftertreatment, and elapsed time, 
any parameter needed to demonstrate the engine is within the NTE or 
an approved carve-out or deficiency region. The one-hertz test data 
must also include any parameters used to modulate the emission-
control system.

    We request comment on this revision.
    Similarly, Subpart K of the preamble requests comment on the 
whether engine manufacturers should be required to design the on-board 
engine computer to explicitly identify when an engine is operating in 
an approved NTE carve-out or deficiency. We want to make clear that the 
request for comment also more broadly covers whether the engine's on-
board computer should identify when the engine is operating within the 
NTE. Under the proposal, manufacturers are required, at a minimum, to 
provide information from the engine's on-board computer or some other 
readily available source that will enable EPA to make these NTE 
determinations.
4. Importation of Nonconforming Highway Engines and Vehicles
    The Agency is proposing revisions to 40 CFR part 85, subpart P 
regarding the applicable emission standards for imported nonconforming 
highway vehicles and engines, including light-duty vehicles (passenger 
cars), light-duty trucks, heavy-duty vehicles, heavy-duty engines, and 
motorcycles. This proposal clarifies that these nonconforming vehicles 
and engines are required to meet the emission standards in effect when 
the vehicle or engine was originally produced, not the emission 
standards in effect when the vehicle or engine is modified. This 
approach is consistent with the requirements for light-duty Independent 
Commercial Importers (ICIs) which have been in effect since 1996 (61 FR 
5842, February 14, 1996).
    Most of the issues related to this proposal were previously 
addressed in the 1996 rule. An excerpt from that 1996 rule provides a 
brief summary of the basis for this proposal. Section I.A of the 1996 
final rule reads in part:

    As proposed, EPA is eliminating the requirement that 
nonconforming light-duty vehicles and Light-duty trucks imported 
pursuant to 40 CFR 85.1501 or 85.1509 meet the part 86 emission 
standards in effect at the time of modification. These vehicles, 
with a few exceptions, will instead be required to meet emission 
standards (with applicable deterioration factors applied) that were 
in effect at the time of original vehicle production, using 
currently applicable testing procedures.
    The specific standards applicable to these vehicles are 
contained in a new Sec.  85.1515 * * *.
    As discussed in the proposal (Supplementary Document pp. 27-28, 
Docket No. A-89-20), when EPA promulgated the prior requirement to 
meet standards applicable at the time of modification, the Agency 
had no data or evidence suggesting that older vehicles could not be 
modified to meet current year emission standards. Since that 
rulemaking, EPA has obtained evidence suggesting that many older 
vehicles cannot be modified to meet current year standards

[[Page 54859]]

without extraordinary cost, which makes the conversion financially 
unfeasible for many owners of such vehicles. Today's rule would give 
owners of older vehicles a way to import their vehicles. In 
addition, it would have been significantly more difficult and costly 
for importers to modify vehicles to comply with the current model 
year standards beginning in January, 1996, when the standards 
applicable to small volume manufacturers became substantially more 
stringent. EPA agrees with the statements submitted by ICIs after 
the close of the comment period that the expense of such 
modifications would have a serious deleterious effect on their 
businesses and would not justify the costs.

    Although the intent of the 1996 rule was clear, we are proposing to 
make regulation changes to make the regulation language consistent with 
the intent of the 1996 rule. The 1996 final rule added 40 CFR 85.1515, 
which provided a list of the emission standards applicable to imported 
light-duty vehicles and light-duty trucks based on the original 
production (OP) year of the vehicle. Tables 1 and 2 in 40 CFR 85.1515 
correctly indicate that the emission standards applicable for pre-1994 
imported light-duty vehicles and light-duty trucks are based on the 
original production year of the vehicle. Tables 1 and 2 also correctly 
indicate (in a footnote) that 1994 and later imported light-duty 
vehicles and light-duty trucks are required to meet the applicable 
emission standards as ``Specified in 40 CFR part 86 for the OP year of 
the vehicle, per 85.1515(c).'' However Sec.  85.1515(c)(1) incorrectly 
indicates that ``Nonconforming motor vehicles or motor vehicle engines 
of 1994 OP model year and later conditionally imported pursuant to 
Sec.  85.1505 or Sec.  85.1509 shall meet all of the emission standards 
specified in 40 CFR part 86 for the model year in which the motor 
vehicle or motor vehicle engine is modified.'' (emphasis added)
    This ambiguity in the regulations was unfortunately not corrected 
after the 1996 rule changes became effective. Nor was it corrected when 
Interim non-Tier 2 and Tier 2 requirements were adopted for import 
vehicles (65 FR 6698, February 10, 2000). Although the 2000 rulemaking 
did not intend to change the highway engine or vehicle importation 
process, the regulations continued to indicate that nonconforming motor 
vehicles and motor vehicle engines must meet the emission standards in 
the model year in which the motor vehicle or motor vehicle engine is 
modified; see 40 CFR 85.1515(c)(2)(ii) through (d). We have now 
received several petitions from light duty ICIs to correct the 
regulations to permit vehicles imported by ICIs to meet OP year 
standards.
    In summary, for the reasons discussed in the provisions of 61 FR 
5842, February 14, 1996, we are proposing changes to correct the 
regulations for nonconforming highway vehicles so they are consistent 
with the intent of the 1996 final rule. This proposal will require 
imported highway vehicles to meet the emission standards in effect the 
year the vehicle was originally produced, not the emission standards in 
effect in the year the vehicle or engine is modified. We are, however, 
concerned that ICI provisions which apply OP year standards could be 
used as a way to circumvent our Tier 2 light duty standards and our new 
more stringent motorcycle standards. Thus we are proposing to cap each 
ICI's annual production of vehicles meeting OP year standards when OP 
year standards are less stringent than the standards that apply during 
the year of modification. We are proposing a cap of a total of 50 light 
duty vehicles and trucks and 50 motorcycles. This does not impact the 
number of vehicles an ICI may produce that are certified to the 
standards that apply during the year of modification.
    While we have never had an ICI for highway HDEs, we are also 
proposing, consistent with the above, to make clear that the applicable 
standards for HDEs imported by an ICI would be those of the year of 
original production. For HDEs, we are proposing an annual cap of five 
on an ICI's production of engines certified to OP year standards that 
are less stringent than those that apply during the year of 
modification. This will address the possibility that ICIs could provide 
an avenue by which truck purchasers could avoid the additional costs of 
new trucks with engines meeting aftertreatment-based engine standards. 
We are proposing a similar amendment for nonroad diesel engines, as 
described elsewhere in this document.
    We believe it is appropriate to have different caps on the quantity 
of vehicles and engines that can be certified to OP year standards, 
where OP year standards are less stringent than those that apply during 
the year of modification. The sales of light-duty vehicles and trucks 
are many times greater than those of heavy-duty highway engines and 
nonroad diesel engines combined. Further, we believe that the caps for 
light-duty vehicles, light-duty trucks, and motorcycles should be 
larger than those for nonroad and highway engines to accommodate an 
industry that has grown up around the light-duty ICI program. The 
light-duty and motorcycle ICIs can provide additional consumer choice 
and also provide an avenue by which (for a price) someone who has lived 
outside of the United States, including returning U.S. military 
personnel, can bring a used personal vehicle they acquired overseas 
into conformity with U.S. emission requirements. No such ICI industry 
exists for highway or nonroad engines. Where OP year standards are 
applied to highway and nonroad engines, we are proposing a lower cap. 
We believe it will be appropriate to limit the activities of engine 
ICIs, when previous model year engines are involved, to those 
specialized trucks or pieces of equipment for which demand is so low 
that normal certification didn't occur or might not occur. While we 
want to provide an opportunity for the importation of highly 
specialized vehicles or equipment that might otherwise be unavailable 
in the United States, we do not want to develop an industry that simply 
provides older equipment that would most likely be built with engines 
meeting significantly less stringent standards.
5. Revisions and Corrections to Dynamometer Driving Schedules
    a. SC03 and US06 driving cycles. This rule proposes to correct 
errors in the SC03 driving cycle and to reconcile several discrepancies 
between the CFR language and the second-by-second US06 and SC03 drive 
cycle traces in the appendices to part 86.
    The SC03 cycle in Appendix I, paragraph (h) is proposed to be 
lengthened to 600 seconds by the addition of six seconds of zero miles 
per hour after 594 seconds. This change and additional language changes 
would eliminate confusion in how to execute the requirements in 
sections 86.160-00(c)(12) and 86.159-00(f)(2)(ix). Sections 86.159-
00(f)(2)(ix) and 86.160-00(c)(12) both state that the engine is turned 
off 2 seconds after the end of the deceleration (which occurs at 594 
seconds and driving stops at 596 seconds).
    With respect to the SC03 drive trace, section 86.160-00(c)(10) 
reads ``Twenty seconds after the engine starts, begin the initial 
vehicle acceleration of the driving schedule.'' However, this is 
incorrect. The printed driving schedule in Appendix I, paragraph (h), 
correctly shows eighteen seconds of idle. The regulatory language is 
proposed to be modified to reflect eighteen seconds of idle, rather 
than twenty.
    Section 86.160-00(c)(12) currently reads ``Turn the engine off 2 
seconds after the end of the last deceleration,'' but the Appendix I, 
paragraph (h), drive schedule has no idle seconds at the end of the 
SC03 cycle. Idle speed values are proposed to be added to the end of 
the

[[Page 54860]]

SC03 drive schedule to make it consistent with the regulatory language. 
The impact of these changes would clarify that the first non-zero speed 
value to be at trace time t=19 seconds. This section is proposed to be 
amended to clarify that driving stops at trace time t=596 seconds.
    The US06 drive schedule has a similar discrepancy. Section 86.159-
00(f)(2)(ix) reads ``Turn the engine off 2 seconds after the end of the 
last deceleration.'' However, the drive schedule in Appendix I (g) has 
six idle seconds at the end of the US06 cycle. We proposed to amend 
this section to clarify that driving stops at trace time t=596 seconds.
    b. Urban Dynamometer Driving Schedule. We are also proposing to 
take action to correct two minor errors in the Appendix I, paragraph 
(a), Urban Dynamometer Driving Schedule (UDDS) that have existed since 
the 1970's. Originally published in the Federal Register on November 
10, 1970 (35 FR 17311), the UDDS is the driving cycle that is the basis 
of the Federal Test Procedure. Since it was published, however, two 
speed values in the UDDS were erroneously modified. Specifically, the 
speed value at t=961 seconds was changed from 5.3 mph to 5.0 mph in 
1972, and the speed value at t=1345 seconds was changed from 18.3 mph 
to 18.8 sometime between 1973 and 1977. The speed value of 5.0 mph at 
t=961 creates an acceleration of 3.6 mph/sec to 8.6 mph at t=962, which 
is inconsistent with the acknowledged 3.3 mph/sec maximum acceleration 
rate due to dynamometer limitations. The speed value of 18.8 mph at 
t=1345 is inconsistent with what should be a gradually decreasing 
acceleration rate from t=1343 to t=1347 seconds. This rule proposes to 
revert these values back to the speed values as they were published in 
1970. It is important to note that the regulated industry and EPA have 
been using the correct speed values since 1970, despite the error in 
the Code of Federal Regulations (CFR).
    In addition, a dynamometer manufacturer commented to EPA that the 
CFR has several errors in the Appendix I, paragraph (b), version of the 
UDDS that is expressed in kilometers per hour. EPA has verified that 
these errors are not rounding errors when converting from miles per 
hour, but are more likely the result of errors in typing. The table 
below indicates the correct mile per hour and kilometer per hour 
values, as well as the incorrect value. This rule proposes to make 
these corrections.

------------------------------------------------------------------------
  Time (seconds)     Incorrect KPH       Correct KPH       Correct MPH
------------------------------------------------------------------------
         363               52.3              52.8              32.8
         405               14.5              14.8               9.2
         453                 31              31.9              19.8
         491               55.8              55.5              34.5
         577               21.4              27.4              17.0
         662               43.9              42.0              26.1
         663               43.1              42.2              26.2
         664               42.3              42.2              26.2
         932               40.3              40.2              25.0
------------------------------------------------------------------------

III. Public Participation

    We request comment on all aspects of this proposal. The comment 
period for this rule will end on October 29, 2004.
    We will hold an informal public workshop on October 1, 2004 at the 
National Vehicle and Fuel Emissions Laboratory, which is located at 
2000 Traverwood Drive, Ann Arbor, Michigan 48105. The workshop will 
start at 9 a.m. with an opportunity for any individuals to raise 
questions or comments related to the proposed technical amendments. 
Following this, the rest of the day will be devoted to discussions of 
the proposed changes to the test procedures in 40 CFR part 1065.
    If you would like a public hearing in addition to the planned 
workshop, contact us by September 20, 2004 as described above in DATES. 
If a public hearing is requested, we will hold it on September 27, 2004 
starting at 9 a.m. EDT. Contact us for updated information about the 
possibility of a public hearing.
    If you would like to present testimony at a public hearing, we ask 
that you notify the contact person listed above at least ten days 
beforehand. You should estimate the time you will need for your 
presentation and identify any needed audio/visual equipment. We suggest 
that you bring copies of your statement or other material for the EPA 
panel and the audience. It would also be helpful if you send us a copy 
of your statement or other materials before the hearing.
    We will arrange for a written transcript of the hearing and keep 
the official record of the hearing open for 30 days to allow you to 
submit supplementary information. You may make arrangements for copies 
of the transcript directly with the court reporter.

IV. Statutory and Executive Order Reviews

A. Executive Order 12866: Regulatory Planning and Review

    Under Executive Order 12866 the Agency must determine whether the 
regulatory action is ``significant'' and therefore subject to review by 
the Office of Management and Budget (OMB) and the requirements of this 
Executive Order. The Executive Order defines a ``significant regulatory 
action'' as any regulatory action that is likely to result in a rule 
that may:
     Have an annual effect on the economy of $100 million or 
more or adversely affect in a material way the economy, a sector of the 
economy, productivity, competition, jobs, the environment, public 
health or safety, or State, Local, or Tribal governments or 
communities;
     Create a serious inconsistency or otherwise interfere with 
an action taken or planned by another agency;
     Materially alter the budgetary impact of entitlements, 
grants, user fees, or loan programs, or the rights and obligations of 
recipients thereof; or
     Raise novel legal or policy issues arising out of legal 
mandates, the President's priorities, or the principles set forth in 
the Executive Order.
    Because the rule merely revises the measurement methods and makes a 
variety of technical amendments to existing programs, it is not a 
significant regulatory action and is not subject to the requirements of 
Executive Order 12866. Any new costs associated with this rule will be 
minimal. In addition, some of the changes will substantially reduce the 
burden associated with testing, as described in the Regulatory Support 
Document.

B. Paperwork Reduction Act

    This rule does not include any new collection requirements, as it 
merely revises the measurement methods and makes a variety of technical 
amendments to existing programs.

C. Regulatory Flexibility Act

    The Regulatory Flexibility Act (RFA) generally requires an agency 
to prepare a regulatory flexibility analysis of any rule subject to 
notice and comment rulemaking requirements under the Administrative 
Procedure Act or any other statute unless the agency certifies that the 
rule will not have a significant economic impact on a substantial 
number of small entities. Small entities include small businesses, 
small organizations, and small governmental jurisdictions.
    For purposes of assessing the impacts of this final rule on small 
entities, a small entity is defined as: (1) A small business as defined 
by the Small Business Administration (SBA) by category of business 
using North America Industrial Classification System (NAICS) and 
codified at 13 CFR 121.201; (2) a small governmental jurisdiction that 
is a government of a city, county, town, school district or

[[Page 54861]]

special district with a population of less than 50,000; and (3) a small 
organization that is any not-for-profit enterprise which is 
independently owned and operated and is not dominant in its field.
    After considering the economic impacts of today's proposed rule on 
small entities, I certify that this action will not have a significant 
economic impact on a substantial number of small entities. The small 
entities directly regulated by this proposed rule are small businesses 
that produce nonroad engines. We have determined that no small entities 
will experience more than incidental costs as a result of this rule. 
This rule merely revises the measurement methods and makes a variety of 
technical amendments to existing programs. This proposed rule, 
therefore, does not require a regulatory flexibility analysis.
    Although this proposed rule will not have a significant economic 
impact on a substantial number of small entities, EPA nonetheless has 
tried to reduce the impact of this rule on small entities. For example, 
most of the proposed changes clarify existing requirements, which will 
reduce the time needed to comply, and added flexibility, which may 
allow for a simpler effort to comply.
    We continue to be interested in the potential impacts of the 
proposed rule on small entities and welcome comments on issues related 
to such impacts.

D. Unfunded Mandates Reform Act

    Title II of the Unfunded Mandates Reform Act of 1995 (UMRA), Public 
Law 104-4, establishes requirements for federal agencies to assess the 
effects of their regulatory actions on state, local, and tribal 
governments and the private sector. Under section 202 of the UMRA, EPA 
generally must prepare a written statement, including a cost-benefit 
analysis, for proposed and final rules with ``federal mandates'' that 
may result in expenditures to state, local, and tribal governments, in 
the aggregate, or to the private sector, of $100 million or more in any 
one year. Before promulgating an EPA rule for which a written statement 
is needed, section 205 of the UMRA generally requires EPA to identify 
and consider a reasonable number of regulatory alternatives and adopt 
the least costly, most cost-effective, or least burdensome alternative 
that achieves the objectives of the rule. The provisions of section 205 
do not apply when they are inconsistent with applicable law. Moreover, 
section 205 allows EPA to adopt an alternative other than the least 
costly, most cost-effective, or least burdensome alternative if the 
Administrator publishes with the final rule an explanation of why that 
alternative was not adopted.
    Before EPA establishes any regulatory requirements that may 
significantly or uniquely affect small governments, including tribal 
governments, it must have developed under section 203 of the UMRA a 
small government agency plan. The plan must provide for notifying 
potentially affected small governments, enabling officials of affected 
small governments to have meaningful and timely input in the 
development of EPA regulatory proposals with significant federal 
intergovernmental mandates, and informing, educating, and advising 
small governments on compliance with the regulatory requirements.
    This rule contains no federal mandates for state, local, or tribal 
governments as defined by the provisions of Title II of the UMRA. The 
rule imposes no enforceable duties on any of these governmental 
entities. Nothing in the rule would significantly or uniquely affect 
small governments. We have determined that this rule contains no 
federal mandates that may result in expenditures of more than $100 
million to the private sector in any single year. This rule merely 
revises the measurement methods and makes a variety of technical 
amendments to existing programs. The requirements of UMRA therefore do 
not apply to this action.

E. Executive Order 13132: Federalism

    Executive Order 13132, entitled ``Federalism'' (64 FR 43255, August 
10, 1999), requires EPA to develop an accountable process to ensure 
``meaningful and timely input by State and local officials in the 
development of regulatory policies that have federalism implications.'' 
``Policies that have federalism implications'' is defined in the 
Executive Order to include regulations that have ``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.''
    Under Section 6 of Executive Order 13132, EPA may not issue a 
regulation that has federalism implications, that imposes substantial 
direct compliance costs, and that is not required by statute, unless 
the Federal government provides the funds necessary to pay the direct 
compliance costs incurred by State and local governments, or EPA 
consults with State and local officials early in the process of 
developing the proposed regulation. EPA also may not issue a regulation 
that has federalism implications and that preempts State law, unless 
the Agency consults with State and local officials early in the process 
of developing the proposed regulation.
    Section 4 of the Executive Order contains additional requirements 
for rules that preempt State or local law, even if those rules do not 
have federalism implications (i.e., the rules will not have 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). Those 
requirements include providing all affected State and local officials 
notice and an opportunity for appropriate participation in the 
development of the regulation. If the preemption is not based on 
express or implied statutory authority, EPA also must consult, to the 
extent practicable, with appropriate State and local officials 
regarding the conflict between State law and Federally protected 
interests within the agency's area of regulatory responsibility.
    This proposed rule does not have federalism implications. It will 
not have 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, 
as specified in Executive Order 13132.

F. Executive Order 13175: Consultation and Coordination With Indian 
Tribal Governments

    Executive Order 13175, entitled ``Consultation and Coordination 
with Indian Tribal Governments'' (65 FR 67249, November 6, 2000), 
requires EPA to develop an accountable process to ensure ``meaningful 
and timely input by tribal officials in the development of regulatory 
policies that have tribal implications.''
    This rule does not have tribal implications as specified in 
Executive Order 13175. This rule will be implemented at the Federal 
level and impose compliance costs only on engine manufacturers and ship 
builders. Tribal governments will be affected only to the extent they 
purchase and use equipment with regulated engines. Thus, Executive 
Order 13175 does not apply to this rule.

G. Executive Order 13045: Protection of Children From Environmental 
Health and Safety Risks

    Executive Order 13045, ``Protection of Children from Environmental 
Health Risks and Safety Risks'' (62 FR 19885, April 23, 1997) applies 
to any rule that (1) is determined to be ``economically

[[Page 54862]]

significant'' as defined under Executive Order 12866, and (2) concerns 
an environmental health or safety risk that EPA has reason to believe 
may have a disproportionate effect on children. If the regulatory 
action meets both criteria, Section 5-501 of the Order directs the 
Agency to evaluate the environmental health or safety effects of the 
planned rule on children, and explain why the planned regulation is 
preferable to other potentially effective and reasonably feasible 
alternatives considered by the Agency.
    This proposed rule is not subject to the Executive Order because it 
does not involve decisions on environmental health or safety risks that 
may disproportionately affect children.

H. Executive Order 13211: Actions That Significantly Affect Energy 
Supply, Distribution, or Use

    This rule is not a ``significant energy action'' as defined in 
Executive Order 13211, ``Actions Concerning Regulations That 
Significantly Affect Energy Supply, Distribution, or Use'' (66 FR 28355 
(May 22, 2001)), because it is not likely to have a significant effect 
on the supply, distribution, or use of energy.

I. National Technology Transfer Advancement Act

    Section 12(d) of the National Technology Transfer and Advancement 
Act of 1995 (``NTTAA''), Public Law 104-113, section 12(d) (15 U.S.C. 
272 note) directs EPA to use voluntary consensus standards in its 
regulatory activities unless doing so would be inconsistent with 
applicable law or otherwise impractical. Voluntary consensus standards 
are technical standards (e.g., materials specifications, test methods, 
sampling procedures, and business practices) that are developed or 
adopted by voluntary consensus standards bodies. NTTAA directs EPA to 
provide Congress, through OMB, explanations when the Agency decides not 
to use available and applicable voluntary consensus standards.
    This proposed rule involves technical standards. The International 
Organization for Standardization (ISO) has a voluntary consensus 
standard that can be used to test engines. However, the test procedures 
in this proposal reflect a level of development that goes substantially 
beyond the ISO or other published procedures. The proposed procedures 
incorporate new specifications for transient emission measurements, 
measuring PM emissions at very low levels, measuring emissions using 
field-testing procedures. The procedures we adopt in this rule will 
form the working template for ISO and national and state governments to 
define test procedures for measuring engine emissions. As such, we have 
worked extensively with the representatives of other governments, 
testing organizations, and the affected industries.
    EPA welcomes comments on this aspect of the proposed rulemaking.

V. Statutory Provisions and Legal Authority

    Statutory authority for the engine controls proposed today can be 
found in 42 U.S.C. 7401-7671q.

List of Subjects

40 CFR Part 85

    Confidential business information, Imports, Labeling, Motor vehicle 
pollution, Reporting and recordkeeping requirements, Research, 
Warranties.

40 CFR Part 86

    Administrative practice and procedure, Confidential business 
information, Labeling, Motor vehicle pollution, Reporting and 
recordkeeping requirements.

40 CFR Part 89

    Environmental protection, Administrative practice and procedure, 
Confidential business information, Imports, Labeling, Motor vehicle 
pollution, Reporting and recordkeeping requirements, Research, Vessels, 
Warranties.

40 CFR Part 90

    Environmental protection, Administrative practice and procedure, 
Air pollution control, Confidential business information, Imports, 
Labeling, Reporting and recordkeeping requirements, Research, 
Warranties.

40 CFR Part 91

    Environmental protection, Administrative practice and procedure, 
Air pollution control, Confidential business information, Imports, 
Labeling, Penalties, Reporting and recordkeeping Requirements, 
Warranties

40 CFR Part 92

    Administrative practice and procedure, Air pollution control, 
Confidential business information, Imports, Labeling, Railroads, 
Reporting and recordkeeping requirements, Warranties

40 CFR Part 94

    Environmental protection, Administrative practice and procedure, 
Air pollution control, Confidential business information, Imports, 
Incorporation by reference, Penalties, Reporting and recordkeeping 
requirements, Vessels, Warranties.

40 CFR Part 1039, 1048, and 1051

    Environmental protection, Administrative practice and procedure, 
Air pollution control, Confidential business information, Imports, 
Incorporation by reference, Labeling, Penalties, Reporting and 
recordkeeping requirements, Warranties.

40 CFR Part 1065

    Environmental protection, Administrative practice and procedure, 
Incorporation by reference, Reporting and recordkeeping requirements, 
Research.

40 CFR Part 1068

    Environmental protection, Administrative practice and procedure, 
Confidential business information, Imports, Motor vehicle pollution, 
Penalties, Reporting and recordkeeping requirements, Warranties.

    Dated: August 16, 2004.
Michael O. Leavitt,
Administrator.
    For the reasons set out in the preamble, title 40, chapter I of the 
Code of Federal Regulations is proposed to be amended as follows:

PART 85--CONTROL OF AIR POLLUTION FROM MOBILE SOURCES

    1. The authority citation for part 85 continues to read as follows:

    Authority: 42 U.S.C. 7401-7671q.

    2. Section 85.1502 is amended by revising paragraph (a)(14) to read 
as follows:


Sec.  85.1502  Definitions.

    (a) * * *
    (14) United States. United States includes the States, the District 
of Columbia, the Commonwealth of Puerto Rico, the Commonwealth of the 
Northern Mariana Islands, Guam, American Samoa, and the U.S. Virgin 
Islands.
* * * * *
    3. Section 85.1503 is amended by revising the section heading and 
adding paragraphs (c), (d), and (e) to read as follows:


Sec.  85.1503  General requirements for importation of nonconforming 
vehicles and engines.

* * * * *
    (c) In any one certificate year (e.g., the current model year), an 
ICI may finally admit no more than the following numbers of 
nonconforming vehicles or engines into the United States under the 
provisions of Sec.  85.1505 and Sec.  85.1509,

[[Page 54863]]

except as allowed by paragraph (e) of this section:
    (1) 5 heavy-duty engines.
    (2) A total of 50 light-duty vehicles, light-duty trucks, and 
medium-duty passenger vehicles.
    (3) 50 highway motorcycles.
    (d) For ICIs owned by a parent company, the importation limits in 
paragraph (c) of this section include importation by the parent company 
and all its subsidiaries.
    (e) An ICI may exceed the limits outlined in paragraphs (c) and (d) 
of this section, provided that any vehicles/engines in excess of the 
limits meet the emission standards and other requirements outlined in 
the provisions of Sec.  85.1515 for the model year in which the motor 
vehicle/engine is modified (instead of the emission standards and other 
requirements applicable for the OP year of the vehicle/engine).
    4. Section 85.1513 is amended by revising paragraph (d) to read as 
follows:


Sec.  85.1513  Prohibited acts; penalties.

* * * * *
    (d) Any importer who violates section 203(a)(1) of the Act is 
subject to a civil penalty under section 205 of the Act of not more 
than $32,500 for each vehicle or engine subject to the violation. In 
addition to the penalty provided in the Act, where applicable, under 
the exemption provisions of Sec.  85.1511(b), or under Sec.  85.1512, 
any person or entity who fails to deliver such vehicle or engine to the 
U.S. Customs Service is liable for liquidated damages in the amount of 
the bond required by applicable Customs laws and regulations.
* * * * *
    5. Section 85.1515 is amended by revising paragraphs (c)(1) and 
(c)(2) to read as follows:


Sec.  85.1515  Emission standards and test procedures applicable to 
imported nonconforming motor vehicles and motor vehicle engines.

* * * * *
    (c)(1) Nonconforming motor vehicles or motor vehicle engines of 
1994 OP model year and later conditionally imported pursuant to Sec.  
85.1505 or Sec.  85.1509 shall meet all of the emission standards 
specified in 40 CFR part 86 for the OP year of the vehicle or motor 
vehicle engine. At the option of the ICI, the nonconforming motor 
vehicle may comply with the emissions standards in 40 CFR 86.1708-99 or 
86.1709-99, as applicable to a light-duty vehicle or light light-duty 
truck, in lieu of the otherwise applicable emissions standards 
specified in 40 CFR part 86 for the OP year of the vehicle. The 
provisions of 40 CFR 86.1710-99 do not apply to imported nonconforming 
motor vehicles. The useful life specified in 40 CFR part 86 for the OP 
year of the motor vehicle or motor vehicle engine is applicable where 
useful life is not designated in this subpart.
    (2)(i) Nonconforming light-duty vehicles and light light-duty 
trucks (LDV/LLDTs) originally manufactured in OP years 2004, 2005 or 
2006 must meet the FTP exhaust emission standards of bin 9 in Tables 
S04-1 and S04-2 in 40 CFR 86.1811-04 and the evaporative emission 
standards for light-duty vehicles and light light-duty trucks specified 
in 40 CFR 86.1811-01(e)(5).
    (ii) Nonconforming LDT3s and LDT4s (HLDTs) and medium-duty 
passenger vehicles (MDPVs) originally manufactured in OP years 2004 
through 2006 must meet the FTP exhaust emission standards of bin 10 in 
Tables S04-1 and S04-2 in 40 CFR 86.1811-04 and the applicable 
evaporative emission standards specified in 40 CFR 86.1811-04(e)(5). 
For 2004 OP year HLDTs and MDPVs where modifications commence on the 
first vehicle of a test group before December 21, 2003, this 
requirement does not apply to the 2004 OP year. ICIs opting to bring 
all of their 2004 OP year HLDTs and MDPVs into compliance with the 
exhaust emission standards of bin 10 in Tables S04-1 and S04-2 in 40 
CFR 86.1811-04, may use the optional higher NMOG values for their 2004-
2006 OP year LDT2s and 2004-2008 LDT4s.
    (iii) Nonconforming LDT3s and LDT4s (HLDTs) and medium-duty 
passenger vehicles (MDPVs) originally manufactured in OP years 2007 and 
2008 must meet the FTP exhaust emission standards of bin 8 in Tables 
S04-1 and S04-2 in 40 CFR 86.1811-04 and the applicable evaporative 
standards specified in 40 CFR 86.1811-04(e)(5).
    (iv) Nonconforming LDV/LDTs originally manufactured in OP years 
2007 and later and nonconforming HLDTs and MDPVs originally 
manufactured in OP years 2009 and later must meet the FTP exhaust 
emission standards of bin 5 in Tables S04-1 and S04-2 in 40 CFR 
86.1811-04, and the evaporative standards specified in 40 CFR 
86.1811(e)(1) through (e)(4).
    (v) ICIs are exempt from the Tier 2 and the interim non-Tier 2 
phase-in intermediate percentage requirements for exhaust, evaporative, 
and refueling emissions described in 40 CFR 86.1811-04.
    (vi) In cases where multiple standards exist in a given model year 
in 40 CFR part 86 due to phase-in requirements of new standards, the 
applicable standards for motor vehicle engines required to be certified 
to engine-based standards are the least stringent standards applicable 
to the engine type for the OP year.
* * * * *
    6. Section 85.2111 is amended by revising the introductory text and 
adding paragraph (d) to read as follows:


Sec.  85.2111  Warranty enforcement.

    The following acts are prohibited and may subject a manufacturer to 
up to a $32,500 civil penalty for each offense, except as noted in 
paragraph (d) of this section:
* * * * *
    (d) The maximum penalty value listed in this section is shown for 
calendar year 2004. Maximum penalty limits for later years may be 
adjusted based on the Consumer Price Index. The specific regulatory 
provisions for changing the maximum penalties, published in 40 CFR part 
19, reference the applicable U.S. Code citation on which the prohibited 
action is based.
    7. Appendix II to subpart V is amended by revising section 1 of 
part A to read as follows:

Appendix II to Subpart V of Part 85--Arbitration Rules

Part A--Pre-Hearing

Section 1: Initiation of Arbitration

    Either party may commence an arbitration under these rules by 
filing at any regional office of the American Arbitration 
Association (the AAA) three copies of a written submission to 
arbitrate under these rules, signed by either party. It shall 
contain a statement of the matter in dispute, the amount of money 
involved, the remedy sought, and the hearing locale requested, 
together with the appropriate administrative fee as provided in the 
Administrative Fee Schedule of the AAA in effect at the time the 
arbitration is filed. The filing party shall notify the MOD Director 
in writing within 14 days of when it files for arbitration and 
provide the MOD Director with the date of receipt of the bill by the 
part manufacturer.
    Unless the AAA in its discretion determines otherwise and no 
party disagrees, the Expedited Procedures (as described in Part E of 
these Rules) shall be applied in any case where no disclosed claim 
or counterclaim exceeds $32,500, exclusive of interest and 
arbitration costs. Parties may also agree to the Expedited 
Procedures in cases involving claims in excess of $32,500.
    All other cases, including those involving claims not in excess 
of $32,500 where either party so desires, shall be administered in 
accordance with Parts A through D of these Rules.

[[Page 54864]]

PART 86--CONTROL OF EMISSIONS FROM NEW AND IN-USE HIGHWAY VEHICLES 
AND ENGINES

    8. The authority citation for part 86 continues to read as follows:

    Authority: 42 U.S.C. 7401-7671q.

    9. Section 86.004-16 is amended by revising paragraph (d) to read 
as follows:


Sec.  86.004-16  Prohibition of defeat devices.

* * * * *
    (d) For vehicle and engine designs designated by the Administrator 
to be investigated for possible defeat devices:
    (1) General. The manufacturer must show to the satisfaction of the 
Administrator that the vehicle or engine design does not incorporate 
strategies that reduce emission control effectiveness exhibited during 
the applicable Federal emissions test procedures when the vehicle or 
engine is operated under conditions which may reasonably be expected to 
be encountered in normal operation and use, unless one of the specific 
exceptions set forth in the definition of ``defeat device'' in Sec.  
86.004-2 has been met.
    (2) Information submissions required. The manufacturer will provide 
an explanation containing detailed information (including information 
which the Administrator may request to be submitted) regarding test 
programs, engineering evaluations, design specifications, calibrations, 
on-board computer algorithms, and design strategies incorporated for 
operation both during and outside of the applicable Federal emission 
test procedure.
    10. Section 86.004-26 is amended by revising paragraph (c)(4) to 
read as follows:


Sec.  86.004-26  Mileage and service accumulation; emission 
measurements.

* * * * *
    (c) * * *
    (4) The manufacturer shall determine, for each engine family, the 
number of hours at which the engine system combination is stabilized 
for emission-data testing. The manufacturer shall maintain, and provide 
to the Administrator if requested, a record of the rationale used in 
making this determination. The manufacturer may elect to accumulate 125 
hours on each test engine within an engine family without making a 
determination. Any engine used to represent emission-data engine 
selections under Sec.  86.094-24(b)(2) shall be equipped with an engine 
system combination that has accumulated at least the number of hours 
determined under this paragraph. Complete exhaust emission tests shall 
be conducted for each emission-data engine selection under Sec.  
86.094-24(b)(2). Evaporative emission controls must be connected, as 
described in 40 CFR part 1065, subpart F. The Administrator may 
determine under Sec.  86.094-24(f) that no testing is required.
* * * * *
    11. Section 86.007-11 is amended by revising paragraphs (a)(2) and 
(a)(3)(i) and adding paragraph (g)(6) to read as follows:


Sec.  86.007-11  Emission standards and supplemental requirements for 
2007 and later model year heavy-duty engines and vehicles.

* * * * *
    (a) * * *
    (2) The standards set forth in paragraph (a)(1) of this section 
refer to the exhaust emitted over the duty cycle specified in 
paragraphs (a)(2)(i) through (iii) of this section, where exhaust 
emissions are measured and calculated as specified in paragraphs 
(a)(2)(iv) and (v) of this section in accordance with the procedures 
set forth in 40 CFR part 1065, except as noted in Sec.  86.007-
23(c)(2):
    (i) Perform the test interval set forth in paragraph (f)(2) of 
Appendix I of this part with a cold-start according to 40 CFR part 
1065, subpart F. This is the cold-start test interval.
    (ii) Shut down the engine after completing the test interval and 
allow 20 minutes to elapse. This is the hot-soak.
    (iii) Repeat the test interval. This is the hot-start test 
interval.
    (iv) Calculate the total emission mass of each constituent, m, and 
the total work, W, over each test interval according to 40 CFR 
1065.650.
    (v) Determine your engine's brake-specific emissions using the 
following calculation, which weights the emissions from the cold-start 
and hot-start test intervals:
[GRAPHIC] [TIFF OMITTED] TP10SE04.000

    (3) * * *
    (i) Exhaust emissions, as determined under Sec.  86.1360-2007(b) 
pertaining to the supplemental emission test cycle, for each regulated 
pollutant shall not exceed 1.0 times the applicable emission standards 
or FELs specified in paragraph (a)(1) of this section.
* * * * *
    (g) * * *
    (6) Manufacturers may determine the number of engines and vehicles 
that are allowed to certify to the NOX plus NMHC standard in 
Sec.  86.004-11 based on calendar years 2007, 2008, and 2009, rather 
than model years 2007, 2008, and 2009.
* * * * *
    12. Section 86.007-21 is amended by revising paragraph (o) to read 
as follows:


Sec.  86.007-21  Application for certification.

* * * * *
    (o) For diesel heavy-duty engines, the manufacturer must provide 
the following additional information pertaining to the supplemental 
emission test conducted under Sec.  86.1360-2007:
    (1) Weighted brake-specific emissions data (i.e., in units of g/
bhp-hr), calculated according to 40 CFR 1065.650 for all pollutants for 
which an emission standard is established in Sec.  86.004-11(a) or 
subsequent sections;
    (2) For engines subject to the MAEL (see Sec.  86.007-
11(a)(3)(ii)), brake specific gaseous emission data for each of the 12 
non-idle test points (identified under Sec.  86.1360-2007(b)(1)) and 
the 3 EPA-selected test points (identified under Sec.  86.1360-
2007(b)(2));
    (3) For engines subject to the MAEL (see Sec.  86.007-
11(a)(3)(ii)), concentrations and mass flow rates of all regulated 
gaseous emissions plus carbon dioxide;
    (4) Values of all emission-related engine control variables at each 
test point;
    (5) Weighted break-specific particulate matter (i.e., in units of 
g/bhp-hr);
    (6) A statement that the test results correspond to the test engine 
selection criteria in 40 CFR 1065.401. The manufacturer also must 
maintain records at the manufacturer's facility which contain all test 
data, engineering analyses, and other information which provides the 
basis for this statement, where such information exists. The 
manufacturer must provide such

[[Page 54865]]

information to the Administrator upon request;
    (7) For engines subject to the MAEL (see Sec.  86.007-
11(a)(3)(ii)), a statement that the engines will comply with the 
weighted average emissions standard and interpolated values comply with 
the Maximum Allowable Emission Limits specified in Sec.  86.007-
11(a)(3) for the useful life of the engine where applicable. The 
manufacturer also must maintain records at the manufacturer's facility 
which contain a detailed description of all test data, engineering 
analyses, and other information which provides the basis for this 
statement, where such information exists. The manufacturer must provide 
such information to the Administrator upon request.
* * * * *

PART 86--[AMENDED]

    13. Part 86 is amended by removing the first Sec.  86.008-10, which 
was added on October 6, 2000.
    14. Section 86.084-2 is amended by revising the definition for 
``Curb-idle'' to read as follows:


Sec.  86.084-2  Definitions.

* * * * *
    Curb-idle means:
    (1) For manual transmission code light-duty trucks, the engine 
speed with the transmission in neutral or with the clutch disengaged 
and with the air conditioning system, if present, turned off. For 
automatic transmission code light-duty trucks, curb-idle means the 
engine speed with the automatic transmission in the Park position (or 
Neutral position if there is no Park position), and with the air 
conditioning system, if present, turned off.
    (2) For manual transmission code heavy-duty engines, the 
manufacturer's recommended engine speed with the clutch disengaged. For 
automatic transmission code heavy-duty engines, curb idle means the 
manufacturer's recommended engine speed with the automatic transmission 
in gear and the output shaft stalled. (Measured idle speed may be used 
in lieu of curb-idle speed for the emission tests when the difference 
between measured idle speed and curb idle speed is sufficient to cause 
a void test under 40 CFR 1065.530 but not sufficient to permit 
adjustment in accordance with 40 CFR part 1065, subpart E.
* * * * *
    15. Section 86.096-38 is amended by revising paragraph (g)(19)(iii) 
to read as follows:


Sec.  86.096-38  Maintenance instructions.

* * * * *
    (g) * * *
    (19) * * *
    (iii) Any person who violates a provision of this paragraph (g) 
shall be subject to a civil penalty of not more than $32,500 per day 
for each violation. This maximum penalty is shown for calendar year 
2004. Maximum penalty limits for later years may be set higher based on 
the Consumer Price Index, as specified in 40 CFR part 19. In addition, 
such person shall be liable for all other remedies set forth in Title 
II of the Clean Air Act, remedies pertaining to provisions of Title II 
of the Clean Air Act, or other applicable provisions of law.
    16. Section 86.121-90 is amended by revising paragraph (d) 
introductory text to read as follows:


Sec.  86.121-90  Hydrocarbon analyzer calibration.

* * * * *
    (d) FID response factor to methane. When the FID analyzer is to be 
used for the analysis of gasoline, diesel, methanol, ethanol, liquefied 
petroleum gas, and natural gas-fueled vehicle hydrocarbon samples, the 
methane response factor of the analyzer must be established. To 
determine the total hydrocarbon FID response to methane, known methane 
in air concentrations traceable to the National Institute of Standards 
and Technology (NIST) must be analyzed by the FID. Several methane 
concentrations must be analyzed by the FID in the range of 
concentrations in the exhaust sample. The total hydrocarbon FID 
response to methane is calculated as follows:

rCH4 = FIDppm/SAMppm

Where:
* * * * *
    17. Section 86.144-94 is amended by revising paragraph (c)(8)(vi) 
to read as follows:


Sec.  86.144-94  Calculations; exhaust emissions.

* * * * *
    (c) * * *
    (8) * * *
    (vi) rCH4 = HC FID response to methane as measured in 
Sec.  86.121(d).
* * * * *
    18. Section 86.158-00 is amended by revising the introductory text 
to read as follows:


Sec.  86.158-00  Supplemental Federal Test Procedures; overview.

    The procedures described in Sec. Sec.  86.158-00, 86.159-00, 
86.160-00, and 86.162-00 discuss the aggressive driving (US06) and air 
conditioning (SC03) elements of the Supplemental Federal Test 
Procedures (SFTP). These test procedures consist of two separable test 
elements: A sequence of vehicle operation that tests exhaust emissions 
with a driving schedule (US06) that tests exhaust emissions under high 
speeds and accelerations (aggressive driving); and a sequence of 
vehicle operation that tests exhaust emissions with a driving schedule 
(SC03) which includes the impacts of actual air conditioning operation. 
These test procedures (and the associated standards set forth in 
subpart S of this part) are applicable to light-duty vehicles and 
light-duty trucks.
* * * * *
    19. Section 86.159-00 is amended by revising paragraph (f)(2)(ix) 
to read as follows:


Sec.  86.159-00  Exhaust emission test procedure for US06 emissions.

* * * * *
    (f) * * *
    (2) * * *
    (ix) Turn the engine off 2 seconds after the end of the last 
deceleration (i.e., engine off at 596 seconds).
* * * * *
    20. Section 86.160-00 is amended by revising the first sentence of 
paragraph (a), and paragraphs (c)(10), (c)(12), (d)(10), and (d)(13) to 
read as follows:


Sec.  86.160-00  Exhaust emission test procedure for SC03 emissions.

    (a) Overview. The dynamometer operation consists of a single, 600 
second test on the SC03 driving schedule, as described in appendix I, 
paragraph (h), of this part. * * *
* * * * *
    (c) * * *
    (10) Eighteen seconds after the engine starts, begin the initial 
vehicle acceleration of the driving schedule.
* * * * *
    (12) Turn the engine off 2 seconds after the end of the last 
deceleration (i.e., engine off at 596 seconds).
* * * * *
    (d) * * *
    (10) Turn the engine off 2 seconds after the end of the last 
deceleration (i.e., engine off at 596 seconds).
* * * * *
    (13) Immediately after the end of the sample period, turn off the 
cooling fan, disconnect the exhaust tube from the vehicle tailpipe(s), 
and drive the vehicle from dynamometer.
* * * * *
    21. Section 86.161-00 is amended by revising paragraph (b)(1) to 
read as follows:

[[Page 54866]]

Sec.  86.161-00  Air conditioning environmental test facility ambient 
requirements.

* * * * *
    (b) * * *
    (1) Ambient humidity is controlled, within the test cell, during 
all phases of the air conditioning test sequence to an average of 100 
+/-5 grains of water/pound of dry air.
* * * * *
    22. Section 86.164-00 is amended by revising paragraph (c)(1)(i) 
introductory text to read as follows:


Sec.  86.164-00  Supplemental federal test procedure calculations.

* * * * *
    (c)(1) * * *
(i) YWSFTP = 0.35(YFTP) + 0.37(YSC03) 
+ 0.28(YUS06)

Where:
* * * * *
    23. A new Sec.  86.413-2006 is added to read as follows:


Sec.  86.413-2006  Labeling.

    (a)(1) The manufacturer of any motorcycle shall, at the time of 
manufacture, affix a permanent, legible label, of the type and in the 
manner described below, containing the information hereinafter 
provided, to all production models of such vehicles available for sale 
to the public and covered by a certificate of conformity.
    (2) A permanent, legible label shall be affixed in a readily 
accessible position. Multi-part labels may be used.
    (3) The label shall be affixed by the vehicle manufacturer who has 
been issued the certificate of conformity for such vehicle, in such a 
manner that it cannot be removed without destroying or defacing the 
label, and shall not be affixed to any part which is easily detached 
from the vehicle or is likely to be replaced during the useful life of 
the vehicle.
    (4) The label shall contain the following information lettered in 
the English language in block letters and numerals, which shall be of a 
color that contrasts with the background of the label:
    (i) The label heading shall read: ``Vehicle Emission Control 
Information'';
    (ii) Full corporate name and trademark of the manufacturer;
    (iii) Engine displacement (in cubic centimeters or liters) and 
engine family identification;
    (iv) Engine tuneup specifications and adjustments, as recommended 
by the manufacturer, including, if applicable: idle speed, ignition 
timing, and the idle air-fuel mixture setting procedure and value 
(e.g., idle CO, idle air-fuel ratio, idle speed drop). These 
specifications shall indicate the proper transmission position during 
tuneup, and which accessories should be in operation and which systems 
should be disconnected during a tuneup;
    (v) Any specific fuel or engine lubricant requirements (e.g., lead 
content, research octane number, engine lubricant type);
    (vi) Identification of the exhaust emission control system, using 
abbreviations in accordance with SAE J1930, June 1993, including the 
following abbreviations for items commonly appearing on motorcycles:

    OC Oxidation catalyst;
    TWC Three-way catalyst;
    AIR Secondary air injection (pump);
    PAIR Pulsed secondary air injection
    DFI Direct fuel injection;
    O2S Oxygen sensor;
    HO2S Heated oxygen sensor;
    EM Engine modification;
    CFI Continuous fuel injection;
    MFI Multi-port (electronic) fuel injection; and
    TBI Throttle body (electronic) fuel injection.

    (viii) An unconditional statement of conformity to U.S. EPA 
regulations which includes the model year; for example, ``This Vehicle 
Conforms to U.S. EPA Regulations Applicable to ------ Model Year New 
Motorcycles'' (the blank is to be filled in with the appropriate model 
year). For all Class III motorcycles and for Class I and Class II 
motorcycles demonstrating compliance with the averaging provisions in 
40 CFR 86.449 the statement must also include the phrase ``is certified 
to an HC+NOX emission standard of ------ grams/mile'' (the 
blank is to be filled in with the Family Emission Limit determined by 
the manufacturer).
    (b) The provisions of this section shall not prevent a manufacturer 
from also reciting on the label that such vehicle conforms to any other 
applicable Federal or State standards for new motorcycles or any other 
information that such manufacturer deems necessary for, or useful to, 
the proper operation and satisfactory maintenance of the vehicle.
    24. Section 86.447-2006 is revised to read as follows:


Sec.  86.447-2006  What provisions apply to motorcycle engines below 50 
cc that are certified under the Small SI program or the Recreational-
vehicle program?

    (a) General provisions. If you are an engine manufacturer, this 
section allows you to introduce into commerce a new highway motorcycle 
(that is, a motorcycle that is a motor vehicle) if it has an engine 
below 50 cc that is already certified to the requirements that apply to 
engines or vehicles under 40 CFR part 90 or 1051 for the appropriate 
model year. If you comply with all the provisions of this section, we 
consider the certificate issued under 40 CFR part 90 or 1051 for each 
engine or vehicle to also be a valid certificate of conformity under 
this part 86 for its model year, without a separate application for 
certification under the requirements of this part 86. See Sec.  86.448-
2006 for similar provisions that apply to vehicles that are certified 
to chassis-based standards under 40 CFR part 1051.
    (b) Vehicle-manufacturer provisions. If you are not an engine 
manufacturer, you may produce highway motorcycles using nonroad engines 
below 50 cc under this section as long as the engine has been properly 
labeled as specified in paragraph (d)(5) of this section and you do not 
make any of the changes described in paragraph (d)(2) of this section. 
If you modify the nonroad engine in any of the ways described in 
paragraph (d)(2) of this section for installation in a highway 
motorcycle, we will consider you a manufacturer of a new highway 
motorcycle. Such engine modifications prevent you from using the 
provisions of this section.
    (c) Liability. Engines for which you meet the requirements of this 
section, and vehicles containing these engines, are exempt from all the 
requirements and prohibitions of this part, except for those specified 
in this section. Engines and vehicles exempted under this section must 
meet all the applicable requirements from 40 CFR part 90 or 1051. This 
applies to engine manufacturers, vehicle manufacturers who use these 
engines, and all other persons as if these engines were used in 
recreational vehicles or other nonroad applications. The prohibited 
acts of 40 CFR part 85 apply to these new highway motorcycles; however, 
we consider the certificate issued under 40 CFR part 90 or 1051 for 
each engine to also be a valid certificate of conformity under this 
part 86 for its model year. If we make a determination that these 
engines do not conform to the regulations during their useful life, we 
may require you to recall them under 40 CFR part 86, 90, or 1068.
    (d) Specific requirements. If you are an engine manufacturer and 
meet all the following criteria and requirements regarding your new 
engine, the highway motorcycle is eligible for an exemption under this 
section:
    (1) Your engine must be below 50 cc and must be covered by a valid 
certificate of conformity for Class II engines issued under 40 CFR part 
90 or

[[Page 54867]]

for recreational vehicles under 40 CFR part 1051.
    (2) You must not make any changes to the certified engine that 
could reasonably be expected to increase its exhaust emissions for any 
pollutant, or its evaporative emissions, if applicable. For example, if 
you make any of the following changes to one of these engines, you do 
not qualify for this exemption:
    (i) Change any fuel system or evaporative system parameters from 
the certified configuration.
    (ii) Change, remove, or fail to properly install any other 
component, element of design, or calibration specified in the engine 
manufacturer's application for certification. This includes 
aftertreatment devices and all related components.
    (iii) Modify or design the engine cooling system so that 
temperatures or heat rejection rates are outside the original engine 
manufacturer's specified ranges.
    (3) You must show that fewer than 50 percent of the engine model's 
total sales for the model year, from all companies, are used in highway 
motorcycles, as follows:
    (i) If you are the original manufacturer of the engine, base this 
showing on your sales information.
    (ii) In all other cases, you must get the original manufacturer of 
the engine to confirm this based on its sales information.
    (4) You must ensure that the engine has the label we require under 
40 CFR part 90 or 1051.
    (5) You must add a permanent supplemental label to the engine in a 
position where it will remain clearly visible after installation in the 
equipment. In the supplemental label, do the following:
    (i) Include the heading: ``HIGHWAY MOTORCYCLE ENGINE EMISSION 
CONTROL INFORMATION''.
    (ii) Include your full corporate name and trademark. You may 
instead include the full corporate name and trademark of another 
company you choose to designate.
    (iii) State: ``THIS ENGINE WAS ADAPTED FOR HIGHWAY USE WITHOUT 
AFFECTING ITS EMISSION CONTROLS.''.
    (iv) State the date you finished installation (month and year), if 
applicable.
    (6) Send the Designated Compliance Officer a signed letter by the 
end of each calendar year (or less often if we tell you) with all the 
following information:
    (i) Identify your full corporate name, address, and telephone 
number.
    (ii) List the engine models you expect to produce under this 
exemption in the coming year.
    (iii) State: ``We produce each listed engine model for nonroad 
application without making any changes that could increase its 
certified emission levels, as described in 40 CFR 1048.605.''.
    (e) Failure to comply. If your highway motorcycles do not meet the 
criteria listed in paragraph (d) of this section, they will be subject 
to the standards, requirements, and prohibitions of this part 86 and 
the certificate issued under 40 CFR part 90 or 1051 will not be deemed 
to also be a certificate issued under this part 86. Introducing these 
engines into commerce without a valid exemption or certificate of 
conformity under this part violates the prohibitions in 40 CFR part 85.
    (f) Data submission. We may require you to send us emission test 
data on any applicable nonroad duty cycles.
    (g) Participation in averaging, banking and trading. Engines 
adapted for recreational use under this section may not generate or use 
emission credits under this part 86. These engines may generate credits 
under the ABT provisions in 40 CFR part 90 or 1051. These engines must 
use emission credits under 40 CFR part 90 or 1051 if they are certified 
to an FEL that exceeds an applicable standard.
    25. Section 86.448-2006 is revised to read as follows:


Sec.  86.448-2006  What provisions apply to vehicles certified under 
the Recreational-vehicle program?

    (a) General provisions. If you are a highway-motorcycle 
manufacturer, this section allows you to introduce into commerce a new 
highway motorcycle with an engine below 50 cc if it is already 
certified to the requirements that apply to recreational vehicles under 
40 CFR parts 1051. A highway motorcycle is a motorcycle that is a motor 
vehicle. If you comply with all of the provisions of this section, we 
consider the certificate issued under 40 CFR part 1051 for each 
recreational vehicle to also be a valid certificate of conformity for 
the motor vehicle under this part 86 for its model year, without a 
separate application for certification under the requirements of this 
part 86. See Sec.  86.447-2006 for similar provisions that apply to 
nonroad engines produced for highway motorcycles.
    (b) Nonrecreational-vehicle provisions. If you are not a 
recreational-vehicle manufacturer, you may produce highway motorcycles 
from recreational vehicles with engines below 50 cc under this section 
as long as the highway motorcycle has the labels specified in paragraph 
(d)(5) of this section and you do not make any of the changes described 
in paragraph (d)(2) of this section. If you modify the recreational 
vehicle or its engine in any of the ways described in paragraph (d)(2) 
of this section for installation in a highway motorcycle, we will 
consider you a manufacturer of a new highway motorcycle. Such 
modifications prevent you from using the provisions of this section.
    (c) Liability. Vehicles for which you meet the requirements of this 
section are exempt from all the requirements and prohibitions of this 
part, except for those specified in this section. Engines and vehicles 
exempted under this section must meet all the applicable requirements 
from 40 CFR part 1051. This applies to engine manufacturers, vehicle 
manufacturers, and all other persons as if the highway motorcycles were 
recreational vehicles. The prohibited acts of 40 CFR part 85 apply to 
these new highway motorcycles; however, we consider the certificate 
issued under 40 CFR part 1051 for each recreational vehicle to also be 
a valid certificate of conformity for the highway motorcycle under this 
part 86 for its model year. If we make a determination that these 
engines or vehicles do not conform to the regulations during their 
useful life, we may require you to recall them under 40 CFR part 86 or 
40 CFR 1068.505.
    (d) Specific requirements. If you are a recreational-vehicle 
manufacturer and meet all the following criteria and requirements 
regarding your new highway motorcycle and its engine, the highway 
motorcycle is eligible for an exemption under this section:
    (1) Your motorcycle must have an engine below 50 cc and it must be 
covered by a valid certificate of conformity as a recreational vehicle 
issued under 40 CFR part 1051.
    (2) You must not make any changes to the certified recreational 
vehicle that we could reasonably expect to increase its exhaust 
emissions for any pollutant, or its evaporative emissions if it is 
subject to evaporative-emission standards. For example, if you make any 
of the following changes, you do not qualify for this exemption:
    (i) Change any fuel system parameters from the certified 
configuration.
    (ii) Change, remove, or fail to properly install any other 
component, element of design, or calibration specified in the vehicle 
manufacturer's application for certification. This includes 
aftertreatment devices and all related components.
    (iii) Modify or design the engine cooling system so that 
temperatures or

[[Page 54868]]

heat rejection rates are outside the original vehicle manufacturer's 
specified ranges.
    (3) You must show that fewer than 50 percent of the total sales as 
a highway motorcycle or a recreational vehicle, from all companies, are 
used in highway motorcycles, as follows:
    (i) If you are the original manufacturer of the vehicle, base this 
showing on your sales information.
    (ii) In all other cases, you must get the original manufacturer of 
the vehicle to confirm this based on their sales information.
    (4) The highway motorcycle must have the vehicle emission control 
information we require under 40 CFR part 1051.
    (5) You must add a permanent supplemental label to the highway 
motorcycle in a position where it will remain clearly visible. In the 
supplemental label, do the following:
    (i) Include the heading: ``HIGHWAY MOTORCYCLE ENGINE EMISSION 
CONTROL INFORMATION''.
    (ii) Include your full corporate name and trademark. You may 
instead include the full corporate name and trademark of another 
company you choose to designate.
    (iii) State: ``THIS VEHICLE WAS ADAPTED FOR HIGHWAY USE WITHOUT 
AFFECTING ITS EMISSION CONTROLS.''.
    (iv) State the date you finished modifying the vehicle (month and 
year), if applicable.
    (6) Send the Designated Compliance Officer a signed letter by the 
end of each calendar year (or less often if we tell you) with all the 
following information:
    (i) Identify your full corporate name, address, and telephone 
number.
    (ii) List the highway motorcycle models you expect to produce under 
this exemption in the coming year.
    (iii) State: ``We produced each listed highway motorcycle without 
making any changes that could increase its certified emission levels, 
as described in 40 CFR 86.448-2006.''.
    (e) Failure to comply. If your highway motorcycles do not meet the 
criteria listed in paragraph (d) of this section, they will be subject 
to the standards, requirements, and prohibitions of this part 86 and 40 
CFR part 85, and the certificate issued under 40 CFR part 1051 will not 
be deemed to also be a certificate issued under this part 86. 
Introducing these motorcycles into commerce without a valid exemption 
or certificate of conformity under this part violates the prohibitions 
in 40 CFR part 85.
    (f) Data submission. We may require you to send us emission test 
data on the duty cycle for Class I motorcycles.
    (g) Participation in averaging, banking and trading. Recreational 
vehicles adapted for use as highway motorcycles under this section may 
not generate or use emission credits under this part 86. These engines 
may generate credits under the ABT provisions in 40 CFR part 1051. 
These engines must use emission credits under 40 CFR part 1051 if they 
are certified to an FEL that exceeds an applicable standard.
    25a. In Sec.  86.513-2004, Table 1 in paragraph (a)(1) is amended 
to read as follows:


Sec.  86.513-2004  Fuel and engine lubricant specifications.

* * * * *
    (a) * * *
    (1) * * *

                        Table 1 of Sec.   86.513-2004.--Gasoline Test Fuel Specifications
----------------------------------------------------------------------------------------------------------------
                   Item                                Procedure                            Value
----------------------------------------------------------------------------------------------------------------
Distillation Range:
    1. Initial boiling point, [deg]C.....  ASTM D 86-97....................  \1\ 23.9-35.0
    2. 10% point, [deg]C.................  ASTM D 86-97....................  48.9-57.2
    3. 50% point, [deg]C.................  ASTM D 86-97....................  93.3-110.0
    4. 90% point, [deg]C.................  ASTM D 86-97....................  148.9-162.8
    5. End point, [deg]C.................  ASTM D 86-97....................  212.8
Hydrocarbon composition:
    1. Olefins, volume %.................  ASTM D 1319-98..................  10 maximum.
    2. Aromatics, volume %...............  ASTM D 1319-98..................  35 maximum.
    3. Saturates.........................  ASTM D 1319-98..................  Remainder.
    Lead (organic), g/liter..............  ASTM D 3237.....................  0.013 maximum.
    Phosphorous, g/liter.................  ASTM D 3231.....................  0.0013 maximum.
    Sulfur, weight %.....................  ASTM D 1266.....................  0.008 maximum.
    Volatility (Reid Vapor Pressure), kPa  ASTM D 323......................  \1\ 55.2 to 63.4.
----------------------------------------------------------------------------------------------------------------
\1\ For testing at altitudes above 1,219 m, the specified volatility range is 52 to 55 kPa and the specified
  initial boiling point range is (23.9 to 40.6) [deg]C.

* * * * *
    26. Section 86.884-8 is amended by revising paragraph (c) 
introductory text to read as follows:


Sec.  86.884-8  Dynamometer and engine equipment.

* * * * *
    (c) An exhaust system with an appropriate type of smokemeter placed 
10 to 32 feet from the exhaust manifold(s), turbocharger outlet(s), 
exhaust aftertreatment device(s), or crossover junction (on Vee 
engines), whichever is farthest downstream. The smoke exhaust system 
shall present an exhaust backpressure within +0.2 inch Hg of the upper 
limit at maximum rated horsepower, as established by the engine 
manufacturer in his sales and service literature for vehicle 
application. The following options may also be used:
* * * * *
    27. Section 86.884-10 is amended by revising paragraph (a) 
introductory text to read as follows:


Sec.  86.884-10  Information.

* * * * *
    (a) Engine description and specifications. A copy of the 
information specified in this paragraph must accompany each engine sent 
to the Administrator for compliance testing. If the engine is submitted 
to the Administrator for testing under subpart N of this part or 40 CFR 
part 1065, only the specified information need accompany the engine. 
The manufacturer need not record the information specified in this 
paragraph for each test if the information, with the exception of 
paragraphs (a)(3), (a)(12), and (a)(13) of this section, is included in 
the manufacturer's part I.
* * * * *
    28. Section 86.884-12 is amended by revising paragraph (c)(2) to 
read as follows:

[[Page 54869]]

Sec.  86.884-12  Test run.

* * * * *
    (c) * * *
    (2) Warm up the engine by the procedure described in 40 CFR 
1065.530.
* * * * *
    29. Section 86.1005-90 is amended by revising paragraphs (a)(1)(i), 
(a)(1)(ii), (a)(2)(vi)(A), and (a)(2)(vi)(B) to read as follows:


Sec.  86.1005-90  Maintenance of records; submittal of information.

    (a) * * *
    (1) * * *
    (i) If testing heavy-duty gasoline-fueled or methanol-fueled Otto-
cycle engines, the equipment requirements specified in 40 CFR part 
1065, subparts B and C;
    (ii) If testing heavy-duty petroleum-fueled or methanol-fueled 
diesel engines, the equipment requirements specified in 40 CFR part 
1065, subparts B and C;
* * * * *
    (2) * * *
    (vi) * * *
    (A) If testing gasoline-fueled or methanol-fueled Otto-cycle heavy-
duty engines, the record requirements specified in 40 CFR 1065.695;
    (B) If testing petroleum-fueled or methanol-fueled diesel heavy-
duty engines, the record requirements specified in 40 CFR 1065.695;
* * * * *
    30. Section 86.1108-87 is amended by revising paragraphs (a)(1)(i), 
(a)(1)(ii), (a)(2)(vi)(A), and (a)(2)(vi)(B) to read as follows:


Sec.  86.1108-87  Maintenance of records.

    (a) * * *
    (1) * * *
    (i) If testing heavy-duty gasoline engines, the equipment 
requirements specified in 40 CFR part 1065, subparts B and C;
    (ii) If testing heavy-duty diesel engines, the equipment 
requirements specified in 40 CFR part 1065, subparts B and C;
* * * * *
    (2) * * *
    (vi) * * *
    (A) If testing heavy-duty gasoline engines, the record requirements 
specified in 40 CFR 1065.695;
    (B) If testing heavy-duty diesel engines, the record requirements 
specified in 40 CFR 1065.695;
* * * * *
    30a. A new Sec.  86.1213-08 is added to read as follows:


Sec.  86.1213-08  Fuel specifications.

    The test fuels listed in 40 CFR part 1065, subpart H, shall be used 
for evaporative emission testing.
    31. Section 86.1301-90 is redesignated as Sec.  86.1301 and revised 
to read as follows:


Sec.  86.1301  Scope; applicability.

    This subpart specifies gaseous emission test procedures for Otto-
cycle and diesel heavy-duty engines, and particulate emission test 
procedures for diesel heavy-duty engines, as follows:
    (a) For model years 1990 through 2003, manufacturers must use the 
test procedures specified in Sec.  86.1305-90.
    (b) For model years 2004 and 2005, manufacturers must use the test 
procedures specified in Sec.  86.1305-2004.
    (c) For model years 2006 and 2007, manufacturers may use the test 
procedures specified in Sec.  86.1305-2004 or Sec.  86.1305-2008.
    (d) For model years 2008 and later, manufacturers must use the test 
procedures specified in Sec.  86.1305-2008.
    (e) As allowed under subpart A of this part, manufacturers may use 
carryover data from previous model years to demonstrate compliance with 
emission standards, without regard to the provisions of this section.
    32. Section 86.1304-90 is redesignated as Sec.  86.1304 and amended 
by revising paragraph (a) to read as follows:


Sec.  86.1304  Section numbering; construction.

    (a) Section numbering. The model year of initial applicability is 
indicated by the section number. The digits following the hyphen 
designate the first model year for which a section is applicable. The 
section continues to apply to subsequent model years unless a later 
model year section is adopted. (Example: Sec.  86.13xx-2004 applies to 
the 2004 and subsequent model years. If a Sec.  86.13xx-2007 is 
promulgated it would apply beginning with the 2007 model year; Sec.  
86.13xx-2004 would apply to model years 2004 through 2006.)
* * * * *
    14. A new Sec.  86.1305-2008 is added to read as follows:


Sec.  86.1305-2008  Introduction; structure of subpart.

    (a) This subpart specifies the equipment and procedures for 
performing exhaust-emission tests on Otto-cycle and diesel-cycle heavy-
duty engines. Subpart A of this part sets forth the emission standards 
and general testing requirements to comply with EPA certification 
procedures.
    (b) Use the applicable equipment and procedures for spark-ignition 
or compression-ignition engines in 40 CFR part 1065 to determine 
whether engines meet the duty-cycle emission standards in subpart A of 
this part. Measure the emissions of all regulated pollutants as 
specified in 40 CFR part 1065. Note that we generally do not allow 
partial-flow sampling for measuring PM emissions on a laboratory 
dynamometer for transient testing. Use the duty cycles and procedures 
specified in Sec.  86.1358-2007, Sec.  86.1360-2007, and Sec.  86.1362-
2007. Adjust emission results from engines using aftertreatment 
technology with infrequent regeneration events as described in Sec.  
86.004-28.
    (c) The provisions in Sec.  86.1370-2007 and Sec.  86.1372-2007 
apply for determining whether an engine meets the applicable not-to-
exceed emission standards.
    (d) Measure smoke using the procedures in subpart I of this part 
for evaluating whether engines meet the smoke standards in subpart A of 
this part.
    (e) Use the fuels specified in 40 CFR part 1065 to perform valid 
tests, as follows:
    (1) For service accumulation, use the test fuel or any commercially 
available fuel that is representative of the fuel that in-use engines 
will use.
    (2) For diesel-fueled engines, use the ultra low-sulfur diesel fuel 
specified in 40 CFR part 1065 for emission testing.
    (f) You may use special or alternate procedures to the extent we 
allow them under 40 CFR 1065.10.
    (g) This subpart is addressed to you as a manufacturer, but it 
applies equally to anyone who does testing for you.
    33. Section 86.1321-90 is amended by revising paragraph (a)(3)(ii) 
to read as follows:


Sec.  86.1321-90  Hydrocarbon analyzer calibration.

* * * * *
    (a) * * *
    (3) * * *
    (ii) The HFID optimization procedures outlined in Sec.  86.331-
79(c).
* * * * *
    34. Section 86.1321-94 is amended by revising paragraph (a)(3)(ii) 
to read as follows:


Sec.  86.1321-94  Hydrocarbon analyzer calibration.

* * * * *
    (a) * * *
    (3) * * *
    (ii) The procedure listed in Sec.  86.331-79(c).
* * * * *
    35. Section 86.1360-2007 is amended by revising paragraph (b), 
removing and reserving paragraphs (c) and (e), and

[[Page 54870]]

removing paragraphs (h), and (i) to read as follows:


Sec.  86.1360-2007  Supplemental emission test; test cycle and 
procedures.

* * * * *
    (b) Test cycle. (1) Perform testing as described in Sec.  86.1362-
2007 for determining whether an engine meets the applicable standards 
when measured over the supplemental emission test.
    (2) For engines not certified to a NOX standard or FEL 
less than 1.5 g/bhp-hr, EPA may select, and require the manufacturer to 
conduct the test using, up to three discrete test points within the 
control area defined in paragraph (d) of this section. EPA will notify 
the manufacturer of these supplemental test points in writing in a 
timely manner before the test. Emission sampling for these discrete 
test modes must include all regulated pollutants except particulate 
matter.
* * * * *
    35a. A new Sec.  86.1362-2007 is added to read as follows:


Sec.  86.1362-2007  How do I measure emissions using ramped-modal 
procedures?

    This section describes how to test engines under steady-state 
conditions.
    (a) Perform steady-state testing with ramped-modal cycles. Start 
sampling at the beginning of the first mode and continue sampling until 
the end of the last mode. Calculate emissions as described in 40 CFR 
1065.650 and cycle statistics as described in 40 CFR 1065.514.
    (b) Measure emissions by testing the engine on a dynamometer with 
the following duty cycle to determine whether it meets the applicable 
steady-state emission standards:

----------------------------------------------------------------------------------------------------------------
                                    Time in mode
             RMC mode                 (seconds)        Engine speed 1, 2             Torque (percent) 2, 3
----------------------------------------------------------------------------------------------------------------
1a Steady-state..................             170  Warm Idle................  0
1b Transition....................              20  Linear Transition........  Linear Transition
2a Steady-state..................             170  A........................  100
2b Transition....................              20  A........................  Linear Transition.
3a Steady-state..................             102  A........................  25
3b Transition....................              20  A........................  Linear Transition.
4a Steady-state..................             100  A........................  75
4b Transition....................              20  A........................  Linear Transition.
5a Steady-state..................             103  A........................  50
5b Transition....................              20  Linear Transition........  Linear Transition.
6a Steady-state..................             194  B........................  100
6b Transition....................              20  B........................  Linear Transition.
7a Steady-state..................             219  B........................  25
7b Transition....................              20  B........................  Linear Transition.
8a Steady-state..................             220  B........................  75
8b Transition....................              20  B........................  Linear Transition.
9a Steady-state..................             219  B........................  50
9b Transition....................              20  Linear Transition........  Linear Transition.
10a Steady-state.................             171  C........................  100
10b Transition...................              20  C........................  Linear Transition.
11a Steady-state.................             102  C........................  25
11b Transition...................              20  C........................  Linear Transition.
12a Steady-state.................             100  C........................  75
12b Transition...................              20  C........................  Linear Transition.
13a Steady-state.................             102  C........................  50
13b Transition...................              20  Linear Transition........  Linear Transition.
14 Steady-state..................             168  Warm Idle................  0
----------------------------------------------------------------------------------------------------------------
1 Speed terms are defined in 40 CFR part 1065.
2 Advance from one mode to the next within a 20-second transition phase. During the transition phase, command a
  linear progression from the speed or torque setting of the current mode to the speed or torque setting of the
  next mode.
3 The percent torque is relative to maximum torque at the commanded engine speed.

    (c) During idle mode, operate the engine with the following 
parameters:
    (1) Hold the speed within your specifications.
    (2) Set the engine to operate at its minimum fueling rate.
    (3) Keep engine torque under 5 percent of maximum test torque.
    (d) For full-load operating modes, operate the engine at its 
maximum fueling rate.
    (e) See 40 CFR part 1065 for detailed specifications of tolerances 
and calculations.
    (f) Perform the ramped-modal test with a warmed-up engine. If the 
ramped-modal test follows directly after testing over the Federal Test 
Procedure, consider the engine warm. Otherwise, operate the engine to 
warm it up as described in 40 CFR part 1065, subpart F.
    36. Section 86.1509-84 is amended by revising paragraphs (c) and 
(d) to read as follows:


Sec.  86.1509-84  Exhaust gas sampling system.

* * * * *
    (c) A CVS sampling system with bag or continuous analysis as 
specified in 40 CFR part 1065 is permitted as applicable. The inclusion 
of an additional raw carbon dioxide (CO2) analyzer as 
specified in 40 CFR part 1065 is required if the CVS system is used, in 
order to accurately determine the CVS dilution factor. The heated 
sample line specified in 40 CFR part 1065 for raw emission requirements 
is not required for the raw CO2 measurement.
    (d) A raw exhaust sampling system as specified in 40 CFR part 1065 
is permitted.
    37. Section 86.1511-84 is amended by revising paragraphs (a)(1) and 
(b) to read as follows:


Sec.  86.1511-84  Exhaust gas analysis system.

    (a) * * *

[[Page 54871]]

    (1) The analyzer used shall conform to the accuracy provisions of 
40 CFR part 1065, subparts C, D, and F.
* * * * *
    (b) The inclusion of a raw CO2 analyzer as specified in 
40 CFR part 1065 is required in order to accurately determine the CVS 
dilution factor.
    38. Section 86.1513-90 is revised to read as follows:


Sec.  86.1513-90  Fuel specifications.

    The requirements of this section are set forth in Sec.  86.1313-94 
for heavy-duty engines, and in Sec.  86.113-90(a) for light-duty 
trucks.
    39. Section 86.1513-94 is revised to read as follows:


Sec.  86.1513-94  Fuel specifications.

    The requirements of this section are set forth in 40 CFR part 1065, 
subpart H, for heavy-duty engines and in Sec.  86.113-94 for light-duty 
trucks.
    40. Section 86.1514-84 is amended by revising paragraphs (b) and 
(c) to read as follows:


Sec.  86.1514-84  Analytical gases.

* * * * *
    (b) If the raw CO sampling system specified in 40 CFR part 1065 is 
used, the analytical gases specified in 40 CFR part 1065, subpart H, 
shall be used.
    (c) If a CVS sampling system is used, the analytical gases 
specified in 40 CFR part 1065, subpart H, shall be used.
    41. Section 86.1519-84 is revised to read as follows:


Sec.  86.1519-84  CVS calibration.

    If the CVS system is used for sampling during the idle emission 
test, the calibration instructions are specified in 40 CFR part 1065, 
subpart D, for heavy-duty engines, and Sec.  86.119-78 for light-duty 
trucks.
    42. Section 86.1524-84 is revised to read as follows:


Sec.  86.1524-84  Carbon dioxide analyzer calibration.

    (a) The calibration requirements for the dilute-sample 
CO2 analyzer are specified in 40 CFR part 1065, subpart D, 
for heavy-duty engines and Sec.  86.124-78 for light-duty trucks.
    (b) The calibration requirements for the raw CO2 
analyzer are specified in 40 CFR part 1065, subpart D.
    43. Section 86.1530-84 is amended by revising paragraph (b) to read 
as follows:


Sec.  86.1530-84  Test sequence; general requirements.

* * * * *
    (b) Ambient test cell conditions during the test shall be those 
specified in Sec.  86.130-78 or 40 CFR part 1065, subpart F.
    44. Section 86.1537-84 is amended by revising paragraphs (c), 
(e)(6), and (f) to read as follows:


Sec.  86.1537-84  Idle test run.

* * * * *
    (c) Achieve normal engine operating condition. The transient engine 
or chassis dynamometer test is an acceptable technique for warm-up to 
normal operating condition for the idle test. If the emission test is 
not performed prior to the idle emission test, a heavy-duty engine may 
be warmed-up according to 40 CFR part 1065, subpart F. A light-duty 
truck may be warmed up by operation through one Urban Dynamometer 
Driving Schedule test procedure (see Sec.  86.115-78 and appendix I to 
this part).
* * * * *
    (e) * * *
    (6) For bag sampling, sample idle emissions long enough to obtain a 
sufficient bag sample, but in no case shorter than 60 seconds nor 
longer than 6 minutes. Follow the sampling and exhaust measurements 
requirements of 40 CFR part 1065, subpart F, for conducting the raw 
CO2 measurement.
* * * * *
    (f) If the raw exhaust sampling and analysis technique specified in 
40 CFR part 1065 is used, the following procedures apply:
    (1) Warm up the engine or vehicle per paragraphs (c) and (d) of 
this section. Operate the engine or vehicle at the conditions specified 
in paragraph (e)(4) of this section.
    (2) Follow the sampling and exhaust measurement requirements of 40 
CFR part 1065, subpart F. The idle sample shall be taken for 60 seconds 
minimum, and no more than 64 seconds. The chart reading procedures of 
40 CFR part 1065, subpart F, shall be used to determine the analyzer 
response.
* * * * *
    45. Section 86.1540-84 is amended by revising paragraphs (b) and 
(c) to read as follows:


Sec.  86.1540-84  Idle exhaust sample analysis.

* * * * *
    (b) If the CVS sampling system is used, the analysis procedures for 
dilute CO and CO2 specified in 40 CFR part 1065 apply. 
Follow the raw CO2 analysis procedure specified in 40 CFR 
part 1065, subpart F, for the raw CO2 analyzer.
    (c) If the continuous raw exhaust sampling technique specified in 
40 CFR part 1065 is used, the analysis procedures for CO specified in 
40 CFR part 1065, subpart F, apply.
    46. Section 86.1542-84 is amended by revising paragraph (a) 
introductory text to read as follows:


Sec.  86.1542-84  Information required.

    (a) General data--heavy-duty engines. Information shall be recorded 
for each idle emission test as specified in 40 CFR part 1065, subpart 
G. The following test data are required:
* * * * *
    47. Section 86.1544-84 is amended by revising paragraphs (b)(1), 
(b)(2), and (c) to read as follows:


Sec.  86.1544-84  Calculation; idle exhaust emissions.

* * * * *
    (b) * * *
    (1) Use the procedures, as applicable, in 40 CFR 1065.650 to 
determine the dilute wet-basis CO and CO2 in percent.
    (2) Use the procedure, as applicable, in 40 CFR 1065.650 to 
determine the raw dry-basis CO2 in percent.
* * * * *
    (c) If the raw exhaust sampling and analysis system specified in 40 
CFR part 1065 is used, the percent for carbon monoxide on a dry basis 
shall be calculated using the procedure, as applicable, in 40 CFR 
1065.650.
    48. Section 86.1708-99 is amended by revising Tables R99-5 and R99-
6 to read as follows:


Sec.  86.1708-99  Exhaust emission standards for 1999 and later light-
duty vehicles.

* * * * *
    (c) * * *
    (2) * * *

      Table R99-5.--Intermediate Useful Life (50,000 Mile) In-Use Standards (g/mi) for Light-Duty Vehicles
----------------------------------------------------------------------------------------------------------------
   Vehicle emission category       Model year          NMOG             CO              NOX            HCHO
----------------------------------------------------------------------------------------------------------------
LEV...........................  1999............           0.100             3.4             0.3           0.015
ULEV..........................  1999-2002.......           0.055             2.1             0.3           0.008
----------------------------------------------------------------------------------------------------------------


[[Page 54872]]


          Table R99-6.--Full Useful Life (100,000 Mile) In-Use Standards (g/mi) for Light-duty Vehicles
----------------------------------------------------------------------------------------------------------------
   Vehicle emission category       Model year          NMOG             CO              NOX            HCHO
----------------------------------------------------------------------------------------------------------------
LEV...........................  1999............           0.125             4.2             0.4           0.018
ULEV..........................  1999-2002.......           0.075             3.4             0.4           0.011
----------------------------------------------------------------------------------------------------------------

* * * * *
    49. Section 86.1709-99 is amended by revising paragraph (c)(1) 
introductory text and by revising Table R99-14.2, to read as follows:


Sec.  86.1709-99  Exhaust emission standards for 1999 and later light 
light-duty trucks.

* * * * *
    (c) * * *
    (1) 1999 model year light light-duty trucks certified as LEVs and 
1999 through 2002 model year light light-duty trucks certified as ULEVs 
shall meet the applicable intermediate and full useful life in-use 
standards in paragraph (c)(2) of this section, according to the 
following provisions:
* * * * *
    (e) * * *
    (2) * * *

                   Table R99-14.2.--SFTP Exhaust Emission Standards (g/mi) for LEVs and ULEVs
----------------------------------------------------------------------------------------------------------------
                                                             US06 Test                       A/C Test
           Loaded vehicle weight (lbs)           ---------------------------------------------------------------
                                                     NMHC + NOX         CO          NMHC + NOX          CO
----------------------------------------------------------------------------------------------------------------
0-3750..........................................            0.14             8.0            0.20             2.7
3751-5750.......................................            0.25            10.5            0.27             3.5
----------------------------------------------------------------------------------------------------------------

* * * * *
    50.Section 86.1710-99 is amended by revising paragraph (c)(8) 
introductory text to read as follows:


Sec.  86.1710-99  Fleet average non-methane organic gas exhaust 
emission standards for light-duty vehicles and light light-duty trucks.

* * * * *
    (c) * * *
    (8) Manufacturers may earn and bank credits in the NTR for model 
years 1997 and 1998. In states without a Section 177 Program effective 
in model year 1997 or 1998, such credits will be calculated as set 
forth in paragraphs (a) and (b) of this section, except that the 
applicable fleet average NMOG standard shall be 0.25 g/mi NMOG for the 
averaging set for light light-duty trucks from 0-3750 lbs LVW and 
light-duty vehicles or 0.32 g/mi NMOG for the averaging set for light 
light-duty trucks from 3751-5750 lbs LVW. In states that opt into 
National LEV and have a Section 177 Program effective in model year 
1997 or 1998, such credits will equal the unused credits earned in 
those states.
* * * * *
    51.Section 86.1711-99 is amended by revising the section heading 
and paragraph (a) to read as follows:


Sec.  86.1711-99  Limitations on sale of Tier 1 vehicles and TLEVs.

    (a) In the 2001 and subsequent model years, manufacturers may sell 
Tier 1 vehicles and TLEVs in the NTR only if vehicles with the same 
engine families are certified and offered for sale in California in the 
same model year, except as provided under Sec.  86.1707(d)(4).
* * * * *
    52. Section 86.1808-01 is amended by revising paragraph 
(f)(19)(iii) to read as follows:


Sec.  86.1808-01  Maintenance instructions.

* * * * *
    (f) * *
    (19) * *
    (iii) Any person who violates a provision of this paragraph (f) 
shall be subject to a civil penalty of not more than $32,500 per day 
for each violation. This maximum penalty is shown for calendar year 
2004. Maximum penalty limits for later years may be set higher based on 
the Consumer Price Index, as specified in 40 CFR part 19. In addition, 
such person shall be liable for all other remedies set forth in Title 
II of the Clean Air Act, remedies pertaining to provisions of Title II 
of the Clean Air Act, or other applicable provisions of law.
    53. Section 86.1811-04 is amended by revising Table SO4-2 in 
paragraph (c)(6) to read as follows;


Sec.  86.1811-04  Emission standards for light-duty vehicles, light-
duty trucks and medium-duty passenger vehicles.

* * * * *
    (c) * * *
    (6) * * *

           Table S04-2.--Tier 2 and Interim Non-Tier 2 Intermediate Useful Life (50,000 Mile) Exhaust Mass Emission Standards (Grams per Mile)
--------------------------------------------------------------------------------------------------------------------------------------------------------
                 Bin No.                         NOX            NMOG             CO             HCHO             PM                    Notes
--------------------------------------------------------------------------------------------------------------------------------------------------------
11.......................................             0.6           0.195             5.0           0.022  ..............  a c f h
10.......................................             0.4     0.125/0.160         3.4/4.4     0.015/0.018  ..............  a b d f g h
9........................................             0.2     0.075/0.140             3.4           0.015  ..............  a b e f g h
8........................................            0.14     0.100/0.125             3.4           0.015  ..............  b f h i
7........................................            0.11           0.075             3.4           0.015  ..............  f h
6........................................            0.08           0.075             3.4           0.015  ..............  f h
5........................................            0.05           0.075             3.4           0.015  ..............  f h
--------------------------------------------------------------------------------------------------------------------------------------------------------
Notes:
a This bin deleted at end of 2006 model year (end of 2008 model year for HLDTs and MDPVs ).
b Higher NMOG, CO and HCHO values apply for HLDTs and MDPVs only.
c This bin is only for MDPVs.

[[Page 54873]]


d Optional NMOG standard of 0.195 g/mi applies for qualifying LDT4s and qualifying MDPVs only.
e Optional NMOG standard of 0.100 g/mi applies for qualifying LDT2s only.
f The full useful life PM standards from Table S04-1 also apply at intermediate useful life.
g Intermediate life standards of this bin are optional for diesels.
h Intermediate life standards are optional for vehicles certified to a useful life of 150,000 miles.
i Higher NMOG standard deleted at end of 2008 model year.

* * * * *
    22. In Appendix I to Part 86 paragraph (a) is amended by revising 
the table entries for ``961'' and ``1345'', paragraph (b) is amended by 
revising the table entries for ``363,'' ``405,'' ``453,'' ``491,'' 
``577,'' ``662,'' ``663,'' ``664,'' and ``932'', and paragraph (h) is 
amended by adding table entries for ``595,'' ``596,'' ``597,'' ``598,'' 
``599,'' and ``600'' in numerical order to read as follows:

Appendix I to Part 86--Urban Dynamometer Schedules

    (a) EPA Urban Dynamometer Driving Schedule for Light-Duty 
Vehicles and Light-Duty Trucks.

                 EPA Urban Dynamometer Driving Schedule
                      [Speed versus time sequence]
------------------------------------------------------------------------
                                                                Speed
                        Time (sec.)                            (m.p.h.)
------------------------------------------------------------------------

                                * * * * *
961........................................................          5.3

                                * * * * *
1345.......................................................         18.3

                                * * * * *
------------------------------------------------------------------------

    (b) EPA Urban Dynamometer Driving Schedule for Light-Duty 
Vehicles, Light-Duty Trucks, and Motorcycles with engine 
displacements equal to or greater than 170 cc (10.4 cu. in.).

                       Speed Versus Time Sequence
------------------------------------------------------------------------
                                                                Speed
                       Time (seconds)                        (kilometers
                                                              per hour)
------------------------------------------------------------------------

                                * * * * *
363........................................................         52.8

                                * * * * *
405........................................................         14.8

                                * * * * *
453........................................................         31.9

                                * * * * *
491........................................................         55.5

                                * * * * *
577........................................................         27.4

                                * * * * *
662........................................................         42.0
663........................................................         42.2
664........................................................         42.2

                                * * * * *
932........................................................         40.2

                                * * * * *
------------------------------------------------------------------------

* * * * *
    (h) EPA SC03 Driving Schedule for Light-Duty Vehicles and Light-
Duty Trucks.

                        EPA SC03 Driving Schedule
                      [Speed versus time sequence]
------------------------------------------------------------------------
                         Time (sec)                          Speed (mph)
------------------------------------------------------------------------

                                * * * * *
595........................................................          0.0
596........................................................          0.0
597........................................................          0.0
598........................................................          0.0
599........................................................          0.0
600........................................................          0.0
------------------------------------------------------------------------

PART 89--CONTROL OF EMISSIONS FROM NEW AND IN-USE NONROAD 
COMPRESSION-IGNITION ENGINES

    54. The authority citation for part 89 is revised to read as 
follows:

    Authority: 42 U.S.C. 7401-7671q.

    55. Section 89.1 is amended by revising paragraph (b)(4)(ii) to 
read as follows:


Sec.  89.1  Applicability.

* * * * *
    (b) * *
    (4) * *
    (ii) Are exempted from the requirements of 40 CFR part 94 by 
exemption provisions of 40 CFR part 94 other than those specified in 40 
CFR 94.907 or 94.912.
* * * * *
    56. Section 89.2 is amended by removing the definitions for 
``Marine diesel engine'' and ``Vessel'', revising the definition of 
``United States'', and adding definitions for ``Amphibious vehicle'', 
``Marine engine'', and ``Marine vessel'' to read as follows:


Sec.  89.2  Definitions.

* * * * *
    Amphibious vehicle means a vehicle with wheels or tracks that is 
designed primarily for operation on land and secondarily for operation 
in water.
* * * * *
    Marine engine means a nonroad engine that is installed or intended 
to be installed on a marine vessel. This includes a portable auxiliary 
marine engine only if its fueling, cooling, or exhaust system is an 
integral part of the vessel. There are two kinds of marine engines:
    (1) Propulsion marine engine means a marine engine that moves a 
vessel through the water or directs the vessel's movement.
    (2) Auxiliary marine engine means a marine engine not used for 
propulsion.
    Marine vessel has the meaning given in 1 U.S.C. 3, except that it 
does not include amphibious vehicles. The definition in 1 U.S.C. 3 very 
broadly includes every craft capable of being used as a means of 
transportation on water.
* * * * *
    United States means the States, the District of Columbia, the 
Commonwealth of Puerto Rico, the Commonwealth of the Northern Mariana 
Islands, Guam, American Samoa, and the U.S. Virgin Islands.
* * * * *
    57. Section 89.102 is amended by revising paragraph (d)(1)(i) to 
read as follows:


Sec.  89.102  Effective dates, optional inclusion, flexibility for 
equipment manufacturers.

* * * * *
    (d) * * *
    (1) * * *
    (i) Equipment rated at or above 37 kW. For nonroad equipment and 
vehicles with engines rated at or above 37 kW, a manufacturer may take 
any of the actions identified in Sec.  89.1003(a)(1) for a portion of 
its U.S.-directed production volume of such equipment and vehicles 
during the seven years immediately following the date on which Tier 2 
engine standards first apply to engines used in such equipment and 
vehicles, provided that the seven-year sum of these portions in each 
year, as expressed as a percentage for each year, does not exceed 80, 
and provided that all such equipment and vehicles or equipment contain 
Tier 1 or Tier 2 engines;
* * * * *

[[Page 54874]]

    58. Section 89.110 is amended by revising paragraph (b)(2) to read 
as follows:


Sec.  89.110  Emission control information label.

* * * * *
    (b) * * *
    (2) The full corporate name and trademark of the manufacturer; 
though the label may identify another company and use its trademark 
instead of the manufacturer's if the provisions of Sec.  89.1009 are 
met.
* * * * *
    59. Section 89.112 is amended by revising paragraph (f)(3) to read 
as follows:


Sec.  89.112  Oxides of nitrogen, carbon monoxide, hydrocarbon, and 
particulate matter exhaust emission standards.

* * * * *
    (f) * * *
    (3) Test procedures. NOX, NMHC, and PM emissions are 
measured using the procedures set forth in 40 CFR part 1065, in lieu of 
the procedures set forth in subpart E of this part. CO emissions may be 
measured using the procedures set forth either in 40 CFR part 1065 or 
in Subpart E of this part. Manufacturers may use an alternate procedure 
to demonstrate the desired level of emission control if approved in 
advance by the Administrator. Engines meeting the requirements to 
qualify as Blue Sky Series engines must be capable of maintaining a 
comparable level of emission control when tested using the procedures 
set forth in paragraph (c) of this section and subpart E of this part. 
The numerical emission levels measured using the procedures from 
subpart E of this part may be up to 20 percent higher than those 
measured using the procedures from 40 CFR part 1065 and still be 
considered comparable.
    60. Section 89.130 is revised to read as follows:


Sec.  89.130  Rebuild practices.

    The provisions of 40 CFR 1068.120 apply to rebuilding of engines 
subject to the requirements of this part 89.
    61. Section 89.301 is amended by revising paragraph (d) to read as 
follows:


Sec.  89.301  Scope; applicability.

* * * * *
    (d) Additional information about system design, calibration 
methodologies, and so forth, for raw gas sampling can be found in 40 
CFR part 1065. Examples for system design, calibration methodologies, 
and so forth, for dilute exhaust gas sampling can be found in 40 CFR 
part 1065.
    62. Section 89.319 is amended by revising paragraphs (b)(2)(i) and 
(c) introductory text to read as follows:


Sec.  89.319  Hydrocarbon analyzer calibration.

    (b) * * *
    (2) * * *
    (i) The HFID optimization procedures outlined in 40 CFR part 1065, 
subpart D.
* * * * *
    (c) Initial and periodic calibration. Prior to introduction into 
service, after any maintenance which could alter calibration, and 
monthly thereafter, the FID or HFID hydrocarbon analyzer shall be 
calibrated on all normally used instrument ranges using the steps in 
this paragraph (c). Use the same flow rate and pressures as when 
analyzing samples. Calibration gases shall be introduced directly at 
the analyzer, unless the ``overflow'' calibration option of 40 CFR part 
1065, subpart F, for the HFID is taken. New calibration curves need not 
be generated each month if the existing curve can be verified as 
continuing to meet the requirements of paragraph (c)(3) of this 
section.
* * * * *
    63. Section 89.320 is amended by revising paragraph (d) to read as 
follows:


Sec.  89.320  Carbon monoxide analyzer calibration.

* * * * *
    (d) The initial and periodic interference, system check, and 
calibration test procedures specified in 40 CFR part 1065 may be used 
in lieu of the procedures specified in this section.
    64. Section 89.321 is amended by revising paragraph (d) to read as 
follows:


Sec.  89.321  Oxides of nitrogen analyzer calibration.

* * * * *
    (d) The initial and periodic interference, system check, and 
calibration test procedures specified in 40 CFR part 1065 may be used 
in lieu of the procedures specified in this section.
    65. Section 89.322 is amended by revising paragraph (b) to read as 
follows:


Sec.  89.322  Carbon dioxide analyzer calibration.

* * * * *
    (b) The initial and periodic interference, system check, and 
calibration test procedures specified in 40 CFR part 1065 may be used 
in lieu of the procedures in this section.
    66. Section 89.410 is amended by adding paragraph (e) to read as 
follows:


Sec.  89.410  Engine test cycle.

* * * * *
    (e) Manufacturers may optionally use the ramped-modal duty cycles 
corresponding to the discrete-mode duty cycles specified in this 
section, as described in 40 CFR 1039.505.
    67. Section 89.419 is amended by revising paragraphs (a) 
introductory text, (a)(3)(i), (b)(1) introductory text, (b)(2)(i), 
(b)(2)(v)(B), (b)(4)(ii), and (b)(4)(iii) to read as follows:


Sec.  89.419  Dilute gaseous exhaust sampling and analytical system 
description.

    (a) General. The exhaust gas sampling system described in this 
section is designed to measure the true mass of gaseous emissions in 
the exhaust of petroleum-fueled nonroad compression-ignition engines. 
This system utilizes the CVS concept (described in 40 CFR part 1065, 
subparts A and B) of measuring mass emissions of HC, CO, and 
CO2. A continuously integrated system is required for HC and 
NOX measurement and is allowed for all CO and CO2 
measurements. The mass of gaseous emissions is determined from the 
sample concentration and total flow over the test period. As an option, 
the measurement of total fuel mass consumed over a cycle may be 
substituted for the exhaust measurement of CO2. General 
requirements are as follows:
* * * * *
    (3) * * *
    (i) Bag sampling (see 40 CFR part 1065) and analytical capabilities 
(see 40 CFR part 1065), as shown in Figure 2 and Figure 3 in appendix A 
to this subpart; or
* * * * *
    (b) * * *
    (1) Exhaust dilution system. The PDP-CVS shall conform to all of 
the requirements listed for the exhaust gas PDP-CVS in 40 CFR part 
1065. The CFV-CVS shall conform to all of the requirements listed for 
the exhaust gas CFV-CVS in 40 CFR part 1065. In addition, the CVS must 
conform to the following requirements:
* * * * *
    (2) * * *
    (i) The continuous HC sample system (as shown in Figure 2 or 3 in 
appendix A to this subpart) uses an ``overflow'' zero and span system. 
In this type of system, excess zero or span gas spills out of the probe 
when zero and span checks of the analyzer are made. The ``overflow'' 
system may also be used to calibrate the HC analyzer according to 40 
CFR part 1065, subpart F, although this is not required.
* * * * *

[[Page 54875]]

    (v) * * *
    (B) Have a wall temperature of 191 [deg]C 11 [deg]C 
over its entire length. The temperature of the system shall be 
demonstrated by profiling the thermal characteristics of the system 
where possible at initial installation and after any major maintenance 
performed on the system. The profiling shall be accomplished using the 
insertion thermocouple probing technique. The system temperature will 
be monitored continuously during testing at the locations and 
temperature described in 40 CFR 1065.145.
* * * * *
    (4) * * *
    (ii) The continuous NOX, CO, or CO2 sampling 
and analysis system shall conform to the specifications of 40 CFR 
1065.145 with the following exceptions and revisions:
    (A) The system components required to be heated by 40 CFR 1065.145 
need only be heated to prevent water condensation, the minimum 
component temperature shall be 55 [deg]C.
    (B) The system response shall meet the specifications in 40 CFR 
part 1065, subpart C.
    (C) Alternative NOX measurement techniques outlined in 
40 CFR part 1065, subpart D, are not permitted for NOX 
measurement in this subpart.
    (D) All analytical gases must conform to the specifications of 
Sec.  89.312.
    (E) Any range on a linear analyzer below 155 ppm must have and use 
a calibration curve conforming to Sec.  89.310.
    (iii) The chart deflections or voltage output of analyzers with 
non-linear calibration curves shall be converted to concentration 
values by the calibration curve(s) specified in Sec.  89.313 before 
flow correction (if used) and subsequent integration takes place.
    68. Section 89.421 is amended by revising paragraphs (b) and (c) to 
read as follows:


Sec.  89.421  Exhaust gas analytical system; CVS bag sample.

* * * * *
    (b) Major component description. The analytical system, Figure 4 in 
appendix A to this subpart, consists of a flame ionization detector 
(FID) (heated for petroleum-fueled compression-ignition engines to 191 
[deg]C 6 [deg]C) for the measurement of hydrocarbons, 
nondispersive infrared analyzers (NDIR) for the measurement of carbon 
monoxide and carbon dioxide, and a chemiluminescence detector (CLD) (or 
HCLD) for the measurement of oxides of nitrogen. The exhaust gas 
analytical system shall conform to the following requirements:
    (1) The CLD (or HCLD) requires that the nitrogen dioxide present in 
the sample be converted to nitric oxide before analysis. Other types of 
analyzers may be used if shown to yield equivalent results and if 
approved in advance by the Administrator.
    (2) If CO instruments are used which are essentially free of 
CO2 and water vapor interference, the use of the 
conditioning column may be deleted. (See 40 CFR part 1065, subpart D.)
    (3) A CO instrument will be considered to be essentially free of 
CO2 and water vapor interference if its response to a 
mixture of 3 percent CO2 in N2, which has been 
bubbled through water at room temperature, produces an equivalent CO 
response, as measured on the most sensitive CO range, which is less 
than 1 percent of full scale CO concentration on ranges above 300 ppm 
full scale or less than 3 ppm on ranges below 300 ppm full scale. (See 
40 CFR part 1065, subpart D.)
    (c) Alternate analytical systems. Alternate analysis systems 
meeting the specifications of 40 CFR part 1065, subpart A, may be used 
for the testing required under this subpart. Heated analyzers may be 
used in their heated configuration.
* * * * *
    69. Section 89.424 is amended by revising the note at the end of 
paragraph (d)(3) to read as follows:


Sec.  89.424  Dilute emission sampling calculations.

* * * * *
    (d) * * *
    (3) * * *
    (Note: If a CO instrument that meets the criteria specified in 
40 CFR part 1065, subpart C, is used without a sample dryer 
according to 40 CFR 1065.145, COem must be substituted 
directly for COe and COdm must be substituted 
directly for COd.)
* * * * *
    70. Appendix A to Subpart F is amended by revising Table 1 to read 
as follows:

Appendix A to Subpart F of Part 89--Sampling Plans for Selective 
Enforcement Auditing of Nonroad Engines

                   Table 1.--Sampling Plan Code Letter
------------------------------------------------------------------------
         Annual engine family sales                   Code letter
------------------------------------------------------------------------
20-50.......................................  AA\1\
20-99.......................................  A
100-299.....................................  B
300-499.....................................  C
500 or greater..............................  D
------------------------------------------------------------------------
\1\ A manufacturer may optionally use either the sampling plan for code
  letter ``AA'' or sampling plan for code letter ``A'' for Selective
  Enforcement Audits of engine families with annual sales between 20 and
  50 engines. Additionally, the manufacturer may switch between these
  plans during the audit.

* * * * *
    71. Section 89.603 is amended by adding paragraph (e) to read as 
follows:


Sec.  89.603  General requirements for importation of nonconforming 
nonroad engines.

* * * * *
    (e)(1) The applicable emission standards for engines imported by an 
ICI under this subpart are the emission standards applicable to the 
Original Production (OP) year of the engine.
    (2) Where engine manufacturers have choices in emission standards 
for one or more pollutants in a given model year, the standard that 
applies to the ICI is the least stringent standard for that pollutant 
applicable to the OP year for the appropriate power category.
    (3) ICIs may not generate, use or trade emission credits or 
otherwise participate in any way in the averaging, banking and trading 
program.
    (4) An ICI may import no more than a total of 5 engines under the 
certificate(s) it receives under this part for any given model year, 
except as allowed by paragraph (e)(5) of this section. For ICIs owned 
by a parent company, the importation limit includes importation by the 
parent company and all its subsidiaries.
    (5) An ICI may exceed the limit outlined in paragraph (e)(4) of 
this section, provided that any engines in excess of the limit meet the 
emission standards and other requirements outlined in the applicable 
provisions of Part 89 or 1039 of this chapter for the model year in 
which the engine is modified (instead of the emission standards and 
other requirements applicable for the OP year of the vehicle/engine).
    72. Section 89.612 is amended by revising paragraph (d) to read as 
follows:


Sec.  89.612  Prohibited acts; penalties.

* * * * *
    (d) An importer who violates section 213(d) and section 203 of the 
Act is subject to the provisions of section 209 of the Act and is also 
subject to a civil penalty under section 205 of the Act of

[[Page 54876]]

not more than $32,500 for each nonroad engine subject to the violation. 
In addition to the penalty provided in the Act, where applicable, a 
person or entity who imports an engine under the exemption provisions 
of Sec.  89.611(b) and, who fails to deliver the nonroad engine to the 
U.S. Customs Service is liable for liquidated damages in the amount of 
the bond required by applicable Customs laws and regulations. The 
maximum penalty value listed in this paragraph (d) is shown for 
calendar year 2004. Maximum penalty limits for later years may be 
adjusted based on the Consumer Price Index. The specific regulatory 
provisions for changing the maximum penalties, published in 40 CFR part 
19, reference the applicable U.S. Code citation on which the prohibited 
action is based.
* * * * *
    73. A new Sec.  89.913 is added to subpart J to read as follows:


Sec.  89.913  What provisions apply to engines certified under the 
motor-vehicle program?

    You may use the provisions of 40 CFR 1039.605 to introduce new 
nonroad engines into commerce if they are already certified to the 
requirements that apply to compression-ignition engines under 40 CFR 
parts 85 and 86. For the purposes of this section, all references in 40 
CFR 1039.605 to 40 CFR part 1039 or sections in that part are replaced 
by references to this part 89 or the corresponding sections in this 
part 89.
    74. A new Sec.  89.914 is added to subpart J to read as follows:


Sec.  89.914  What provisions apply to vehicles certified under the 
motor-vehicle program?

    You may use the provisions of 40 CFR 1039.610 to introduce new 
nonroad engines or equipment into commerce if the vehicle is already 
certified to the requirements that apply under 40 CFR parts 85 and 86. 
For the purposes of this section, all references in 40 CFR 1039.610 to 
40 CFR part 1039 or sections in that part are replaced by references to 
this part 89 or the corresponding sections in this part 89.
    75. Section 89.1003 is amended by removing and reserving paragraphs 
(b)(5) and (b)(6), redesignating (b)(7)(iv) as (b)(7)(vii), revising 
paragraphs (a)(3)(iii), (b)(7)(ii), and (b)(7)(iii), and adding 
paragraphs (b)(7)(iv) and (b)(7)(viii) to read as follows:


Sec.  89.1003  Prohibited acts.

    (a) * * *
    (3) * * *
    (iii) For a person to deviate from the provisions of Sec.  89.130 
when rebuilding an engine (or rebuilding a portion of an engine or 
engine system). Such a deviation violates paragraph (a)(3)(i) of this 
section.
* * * * *
    (b) * * *
    (7) * * *
    (ii) The engine manufacturer or its agent takes ownership and 
possession of the engine being replaced or confirms that the engine has 
been destroyed; and
    (iii) If the engine being replaced was not certified to any 
emission standards under this part, the replacement engine must have a 
permanent label with your corporate name and trademark and the 
following language, or similar alternate language approved by the 
Administrator:
    THIS ENGINE DOES NOT COMPLY WITH U.S. EPA NONROAD OR HIGHWAY 
EMISSION REQUIREMENTS. SELLING OR INSTALLING THIS ENGINE FOR ANY 
PURPOSE OTHER THAN TO REPLACE A NONROAD ENGINE BUILT BEFORE JANUARY 1, 
[Insert appropriate year reflecting when the earliest tier of standards 
began to apply to engines of that size and type] MAY BE A VIOLATION OF 
FEDERAL LAW SUBJECT TO CIVIL PENALTY.
    (iv) If the engine being replaced was certified to emission 
standards less stringent than those in effect when you produce the 
replacement engine, the replacement engine must have a permanent label 
with your corporate name and trademark and the following language, or 
similar alternate language approved by the Administrator:
    THIS ENGINE COMPLIES WITH U.S. EPA NONROAD EMISSION REQUIREMENTS 
UNDER THE PROVISIONS OF 40 CFR 89.1003(b)(7). SELLING OR INSTALLING 
THIS ENGINE FOR ANY PURPOSE OTHER THAN TO REPLACE A NONROAD ENGINE 
BUILT BEFORE JANUARY 1, [Insert appropriate year reflecting when the 
next tier of emission standards began to apply] MAY BE A VIOLATION OF 
FEDERAL LAW SUBJECT TO CIVIL PENALTY.
* * * * *
    (viii) The provisions of this section may not be used to circumvent 
emission standards that apply to new engines under this part.
    76. Section 89.1006 is amended by revising paragraphs (a)(1), 
(a)(2), (a)(5), and (c)(1) and adding paragraph (a)(6) to read as 
follows:


Sec.  89.1006  Penalties.

    (a) * * *
    (1) A person who violates Sec.  89.1003(a)(1), (a)(4), or (a)(6), 
or a manufacturer or dealer who violates Sec.  89.1003(a)(3)(i), is 
subject to a civil penalty of not more than $32,500 for each violation.
    (2) A person other than a manufacturer or dealer who violates Sec.  
89.1003(a)(3)(i) or any person who violates Sec.  89.1003(a)(3)(ii) is 
subject to a civil penalty of not more than $2,750 for each violation.
* * * * *
    (5) A person who violates Sec.  89.1003(a)(2) or (a)(5) is subject 
to a civil penalty of not more than $32,500 per day of violation.
    (6) The maximum penalty values listed in this section are shown for 
calendar year 2004. Maximum penalty limits for later years may be 
adjusted based on the Consumer Price Index. The specific regulatory 
provisions for changing the maximum penalties, published in 40 CFR part 
19, reference the applicable U.S. Code citation on which the prohibited 
action is based.
* * * * *
    (c) * * *
    (1) Administrative penalty authority. In lieu of commencing a civil 
action under paragraph (b) of this section, the Administrator may 
assess any civil penalty prescribed in paragraph (a) of this section, 
except that the maximum amount of penalty sought against each violator 
in a penalty assessment proceeding shall not exceed $270,000, unless 
the Administrator and the Attorney General jointly determine that a 
matter involving a larger penalty amount is appropriate for 
administrative penalty assessment. Any such determination by the 
Administrator and the Attorney General is not subject to judicial 
review. Assessment of a civil penalty shall be by an order made on the 
record after opportunity for a hearing held in accordance with the 
procedures found at part 22 of this chapter. The Administrator may 
compromise, or remit, with or without conditions, any administrative 
penalty which may be imposed under this section.
* * * * *
    77. A new Sec.  89.1009 is added to subpart K to read as follows:


Sec.  89.1009  What special provisions apply to branded engines?

    The following provisions apply if you identify the name and 
trademark of another company instead of your own on your emission 
control information label, as provided by Sec.  89.110(b)(2):
    (a) You must have a contractual agreement with the other company 
that obligates that company to take the following steps:

[[Page 54877]]

    (1) Meet the emission warranty requirements that apply under this 
part. This may involve a separate agreement involving reimbursement of 
warranty-related expenses.
    (2) Report all warranty-related information to the certificate 
holder.
    (b) In your application for certification, identify the company 
whose trademark you will use and describe the arrangements you have 
made to meet your requirements under this section.
    (c) You remain responsible for meeting all the requirements of this 
chapter, including warranty and defect-reporting provisions.

PART 90--CONTROL OF EMISSIONS FROM NONROAD SPARK-IGNITION ENGINES 
AT OR BELOW 19 KILOWATTS

    78. The authority citation for part 90 is revised to read as 
follows:

    Authority: 42 U.S.C. 7401-7671q.

    79. Section 90.1 is amended by removing and reserving paragraph 
(d)(4), revising paragraphs (b) and (d)(5), and adding paragraph (c) to 
read as follows:


Sec.  90.1  Applicability.

* * * * *
    (b) In certain cases, the regulations in this part 90 also apply to 
new engines with a gross power output above 19 kW that would otherwise 
be covered by 40 CFR part 1048 or 1051. See 40 CFR 1048.615 or 
1051.145(a)(3) for provisions related to this allowance.
    (c) In certain cases, the regulations in this part 90 apply to new 
engines below 50 cc used in motorcycles that are motor vehicles. See 40 
CFR 86.447-2006 or 86.448-2006 for provisions related to this 
allowance.
* * * * *
    (d) * * *
    (5) Engines certified to meet the requirements of 40 CFR part 1048, 
subject to the provisions of Sec.  90.913.
* * * * *
    80. Section 90.3 is amended by revising the definitions for 
``Marine engine'', ``Marine vessel'', and ``United States'' and adding 
definitions for ``Amphibious vehicle'' and ``Maximum engine power'' in 
alphabetical order to read as follows:


Sec.  90.3  Definitions.

* * * * *
    Amphibious vehicle means a vehicle with wheels or tracks that is 
designed primarily for operation on land and secondarily for operation 
in water.
* * * * *
    Marine engine means a nonroad engine that is installed or intended 
to be installed on a marine vessel. This includes a portable auxiliary 
marine engine only if its fueling, cooling, or exhaust system is an 
integral part of the vessel. There are two kinds of marine engines:
    (1) Propulsion marine engine means a marine engine that moves a 
vessel through the water or directs the vessel's movement.
    (2) Auxiliary marine engine means a marine engine not used for 
propulsion.
    Marine vessel has the meaning given in 1 U.S.C. 3, except that it 
does not include amphibious vehicles. The definition in 1 U.S.C. 3 very 
broadly includes every craft capable of being used as a means of 
transportation on water.
    Maximum engine power means gross power.
* * * * *
    United States means the States, the District of Columbia, the 
Commonwealth of Puerto Rico, the Commonwealth of the Northern Mariana 
Islands, Guam, American Samoa, and the U.S. Virgin Islands.
* * * * *
    81. Section 90.301 is amended by revising paragraphs (c) and (d) to 
read as follows:


Sec.  90.301  Applicability.

* * * * *
    (c) Additional information about system design, calibration 
methodologies, and so forth, for raw gas sampling can be found in 40 
CFR part 1065. Examples for system design, calibration methodologies, 
and so forth, for dilute exhaust gas sampling can be found in 40 CFR 
part 1065.
    (d) For Phase 2 Class I, Phase 2 Class I-B, and Phase 2 Class II 
natural gas fueled engines, use the procedures of 40 CFR part 1065 to 
measure nonmethane hydrocarbon (NMHC) exhaust emissions from Phase 2 
Class I, Phase 2 Class I-B, and Phase 2 Class II natural gas fueled 
engines.
    82. Section 90.308 is amended by revising paragraph (b)(1) to read 
as follows:


Sec.  90.308  Lubricating oil and test fuels.

* * * * *
    (b) * * *
    (1) The manufacturer must use gasoline having the specifications, 
or substantially equivalent specifications approved by the 
Administrator, as specified in Table 3 in Appendix A of this subpart 
for exhaust emission testing of gasoline fueled engines. As an option, 
manufacturers may use the fuel specified in 40 CFR part 1065, subpart 
H, for gasoline-fueled engines.
* * * * *
    83. Section 90.316 is amended by revising paragraphs (b)(2)(ii) and 
(c) introductory text to read as follows:


Sec.  90.316  Hydrocarbon analyzer calibration.

* * * * *
    (b) * * *
    (2) * * *
    (ii) The HFID optimization procedures outlined in 40 CFR part 1065, 
subpart D.
* * * * *
    (c) Initial and periodic calibration. Prior to initial use and 
monthly thereafter, or within one month prior to the certification 
test, the FID or HFID hydrocarbon analyzer must be calibrated on all 
normally used instrument ranges using the steps in this paragraph. Use 
the same flow rate and pressures as when analyzing samples. Introduce 
calibration gases directly at the analyzer. An optional method for 
dilute sampling described in 40 CFR part 1065, subpart F, may be used.
* * * * *
    84. Section 90.318 is amended by revising paragraph (d) to read as 
follows:


Sec.  90.318  Oxides of nitrogen analyzer calibration.

* * * * *
    (d) The initial and periodic interference, system check, and 
calibration test procedures specified in 40 CFR part 1065, subpart D, 
may be used in lieu of the procedures specified in this section.
    85. Section 90.320 is amended by revising paragraph (b) to read as 
follows:


Sec.  90.320  Carbon dioxide analyzer calibration.

* * * * *
    (b) The initial and periodic interference, system check, and 
calibration test procedures specified in 40 CFR part 1065, subparts C 
and D, may be used in lieu of the procedures in this section.
    86. Section 90.401 is amended by revising paragraph (d) to read as 
follows:


Sec.  90.401  Applicability.

* * * * *
    (d) For Phase 2 Class I, Phase 2 Class I-B, and Phase 2 Class II 
natural gas fueled engines, use the equipment specified in 40 CFR part 
1065, subparts D and E, to measure nonmethane hydrocarbon (NMHC) 
exhaust emissions from Phase 2 Class I, Phase 2 Class I-B, and Phase 2 
Class II natural gas fueled engines.
    87. Section 90.421 is amended by revising paragraph (b) 
introductory text,

[[Page 54878]]

(b)(4)(ii), and (b)(4)(iii) to read as follows:


Sec.  90.421  Dilute gaseous exhaust sampling and analytical system 
description.

* * * * *
    (b) Component description. The components necessary for exhaust 
sampling must meet the following requirements:
* * * * *
    (4) * * *
    (ii) Conform to the continuous NOX, CO, or 
CO2 sampling and analysis system to the specifications of 40 
CFR 1065.145, with the following exceptions and revisions:
    (A) Heat the system components requiring heating only to prevent 
water condensation, the minimum component temperature is 55 [deg]C.
    (B) Coordinate analysis system response time with CVS flow 
fluctuations and sampling time/test cycle offsets to meet the time-
alignment and dispersion specifications in 40 CFR part 1065, subpart C.
    (C) Use only analytical gases conforming to the specifications of 
40 CFR 1065.750 for calibration, zero and span checks.
    (D) Use a calibration curve conforming to 40 CFR part 1065, 
subparts C and D, for CO, CO2, and NOX for any 
range on a linear analyzer below 155 ppm.
    (iii) Convert the chart deflections or voltage output of analyzers 
with non-linear calibration curves to concentration values by the 
calibration curve(s) specified in 40 CFR part 1065, subpart D, before 
flow correction (if used) and subsequent integration takes place.
    88. Section 90.613 is amended by revising paragraph (d) to read as 
follows:


Sec.  90.613  Prohibited acts; penalties.

* * * * *
    (d) An importer who violates section 213(d) and section 203 of the 
Act is subject to a civil penalty under section 205 of the Act of not 
more than $32,500 for each engine subject to the violation. In addition 
to the penalty provided in the Act, where applicable, under the 
exemption provisions of Sec.  90.612(b), a person or entity who fails 
to deliver the engine to the U.S. Customs Service is liable for 
liquidated damages in the amount of the bond required by applicable 
Customs laws and regulations. The maximum penalty value listed in this 
paragraph (d) is shown for calendar year 2004. Maximum penalty limits 
for later years may be adjusted based on the Consumer Price Index. The 
specific regulatory provisions for changing the maximum penalties, 
published in 40 CFR part 19, reference the applicable U.S. Code 
citation on which the prohibited action is based.
    89. A new Sec.  90.913 is added to subpart J to read as follows:


Sec.  90.913  Exemption for engines certified to standards for Large SI 
engines.

    (a) An engine is exempt from the requirements of this part if it is 
in an engine family that has a valid certificate of conformity showing 
that it meets emission standards and other requirements under 40 CFR 
part 1048 for the appropriate model year.
    (b) The only requirements or prohibitions from this part that apply 
to an engine that is exempt under this section are in this section.
    (c) If your engines do not have the certificate required in 
paragraph (a) of this section, they will be subject to the provisions 
of this part. Introducing these engines into commerce without a valid 
exemption or certificate of conformity violates the prohibitions in 
Sec.  90.1003.
    (d) Engines exempted under this section are subject to all the 
requirements affecting engines under 40 CFR part 1048. The requirements 
and restrictions of 40 CFR part 1048 apply to anyone manufacturing 
these engines, anyone manufacturing equipment that uses these engines, 
and all other persons in the same manner as if these were nonroad 
spark-ignition engines above 19 kW.
    (e) Engines exempted under this section may not generate or use 
emission credits under this part 90.
    90. Section 90.1006 is amended by revising paragraphs (a)(1), 
(a)(2), (a)(5), and (c)(1) and adding paragraph (a)(6) to read as 
follows:


Sec.  90.1006  Penalties.

    (a) * * *
    (1) A person who violates Sec.  90.1003(a)(1), (a)(4), or (a)(5), 
or a manufacturer or dealer who violates Sec.  90.1003(a)(3)(i), is 
subject to a civil penalty of not more than $32,500 for each violation.
    (2) A person other than a manufacturer or dealer who violates Sec.  
90.1003(a)(3)(i) or any person who violates Sec.  90.1003(a)(3)(ii) is 
subject to a civil penalty of not more than $2,750 for each violation.
* * * * *
    (5) A person who violates Sec.  90.1003(a)(2) or (a)(6) is subject 
to a civil penalty of not more than $32,500 per day of violation.
    (6) The maximum penalty values listed in this section are shown for 
calendar year 2004. Maximum penalty limits for later years may be 
adjusted based on the Consumer Price Index. The specific regulatory 
provisions for changing the maximum penalties, published in 40 CFR part 
19, reference the applicable U.S. Code citation on which the prohibited 
action is based.
* * * * *
    (c) * * *
    (1) Administrative penalty authority. In lieu of commencing a civil 
action under paragraph (b) of this section, the Administrator shall 
assess any civil penalty prescribed in paragraph (a) of this section, 
except that the maximum amount of penalty sought against each violator 
in a penalty assessment proceeding can not exceed $270,000, unless the 
Administrator and the Attorney General jointly determine that a matter 
involving a larger penalty amount is appropriate for administrative 
penalty assessment. Any such determination by the Administrator and the 
Attorney General is not subject to judicial review. Assessment of a 
civil penalty is made by an order made on the record after opportunity 
for a hearing held in accordance with the procedures found at part 22 
of this chapter. The Administrator may compromise, or remit, with or 
without conditions, any administrative penalty which may be imposed 
under this section.
* * * * *

PART 91--CONTROL OF EMISSIONS FROM MARINE SPARK-IGNITION ENGINES

    91. The authority citation for part 91 is revised to read as 
follows:


    Authority: 42 U.S.C. 7401--7671q.

    92. Section 91.3 is amended by revising the definitions for 
``Marine spark-ignition engine'', ``Marine vessel'', and ``United 
States'', adding definitions for ``Amphibious vehicle'', ``Marine 
engine'', and ``Spark-ignition'' in alphabetical order to read as 
follows:


Sec.  91.3  Definitions.

* * * * *
    Amphibious vehicle means a vehicle with wheels or tracks that is 
designed primarily for operation on land and secondarily for operation 
in water.
* * * * *
    Marine engine means a nonroad engine that is installed or intended 
to be installed on a marine vessel. This includes a portable auxiliary 
marine engine only if its fueling, cooling, or exhaust system is an 
integral part of the vessel. There are two kinds of marine engines:

[[Page 54879]]

    (1) Propulsion marine engine means a marine engine that moves a 
vessel through the water or directs the vessel's movement.
    (2) Auxiliary marine engine means a marine engine not used for 
propulsion.
    Marine spark-ignition engine means a spark-ignition marine engine 
that propels a marine vessel.
* * * * *
    Marine vessel has the meaning given in 1 U.S.C. 3, except that it 
does not include amphibious vehicles. The definition in 1 U.S.C. 3 very 
broadly includes every craft capable of being used as a means of 
transportation on water.
* * * * *
    Spark-ignition means relating to a gasoline-fueled engine or any 
other type of engine with a spark plug (or other sparking device) and 
with operating characteristics significantly similar to the theoretical 
Otto combustion cycle. Spark-ignition engines usually use a throttle to 
regulate intake air flow to control power during normal operation.
* * * * *
    United States means the States, the District of Columbia, the 
Commonwealth of Puerto Rico, the Commonwealth of the Northern Mariana 
Islands, Guam, American Samoa, and the U.S. Virgin Islands.
* * * * *
    93. Section 91.301 is amended by revising paragraph (c) to read as 
follows:


Sec.  91.301  Scope; applicability.

* * * * *
    (c) Additional information about system design, calibration 
methodologies, and so forth, for raw gas sampling can be found in 40 
CFR part 1065. Examples for system design, calibration methodologies, 
and so forth, for dilute sampling can be found in 40 CFR part 1065.
    94. Section 91.316 is amended by revising paragraphs (b)(2)(ii) and 
(c) introductory text to read as follows:


Sec.  91.316  Hydrocarbon analyzer calibration.

* * * * *
    (b) * * *
    (2) * * *
    (ii) The HFID optimization procedures outlined in 40 CFR part 1065, 
subpart D.
* * * * *
    (c) Initial and periodic calibration. Prior to introduction into 
service and monthly thereafter, or within one month prior to the 
certification test, calibrate the FID or HFID hydrocarbon analyzer on 
all normally used instrument ranges, using the steps in this paragraph. 
Use the same flow rate and pressures as when analyzing samples. 
Introduce calibration gases directly at the analyzer. An optional 
method for dilute sampling described in 40 CFR part 1065, subpart F, 
may be used.
* * * * *
    95. Section 91.318 is amended by revising paragraph (d) to read as 
follows:


Sec.  91.318  Oxides of nitrogen analyzer calibration.

* * * * *
    (d) The initial and periodic interference, system check, and 
calibration test procedures specified in 40 CFR part 1065, subparts C 
and D, may be used in lieu of the procedures specified in this section.
    96. Section 91.320 is amended by revising paragraph (b) to read as 
follows:


Sec.  91.320  Carbon dioxide analyzer calibration.

* * * * *
    (b) The initial and periodic interference, system check, and 
calibration test procedures specified in 40 CFR part 1065, subparts C 
and D, may be used in lieu of the procedures in this section.
    97. Section 91.419 is amended by revising the entry defining 
``MHCexh'' in paragraph (b) to read as follows:


Sec.  91.419  Raw emission sampling calculations.

* * * * *
    (b) * * *
    MHCexh = Molecular weight of hydrocarbons in the 
exhaust; see the following equation:

MHCexh = 12.01 + 1.008 x[alpha]
* * * * *
    98. Section 91.421 is amended by revising paragraph (b)(4)(ii) and 
(b)(4)(iii) to read as follows:


Sec.  91.421  Dilute gaseous exhaust sampling and analytical system 
description.

* * * * *
    (b) * * *
    (4) * * *
    (ii) Conform to the continuous NOX, CO2, or 
CO2 sampling and analysis system to the specifications of 40 
CFR 1065.145, with the following exceptions and revisions:
    (A) Heat the system components requiring heating only to prevent 
water condensation, the minimum component temperature is 55 [deg]C.
    (B) Coordinate analysis system response time with CVS flow 
fluctuations and sampling time/test cycle offsets to meet the time-
alignment and dispersion specifications in 40 CFR part 1065, subpart C.
    (C) Use only analytical gases conforming to the specifications of 
40 CFR 1065.750 for calibration, zero, and span checks.
    (D) Use a calibration curve conforming to 40 CFR part 1065, 
subparts C and D, for CO, CO2, and NOX for any 
range on a linear analyzer below 155 ppm.
    (iii) Convert the chart deflections or voltage output of analyzers 
with non-linear calibration curves to concentration values by the 
calibration curve(s) specified in 40 CFR part 1065, subpart D, before 
flow correction (if used) and subsequent integration takes place.
* * * * *
    99. Section 91.705 is amended by revising paragraph (d) to read as 
follows:


Sec.  91.705  Prohibited acts; penalties.

* * * * *
    (d) An importer who violates Sec.  91.1103(a)(1), section 213(d) 
and section 203 of the Act is subject to a civil penalty under Sec.  
91.1106 and section 205 of the Act of not more than $32,500 for each 
marine engine subject to the violation. In addition to the penalty 
provided in the Act, where applicable, a person or entity who imports 
an engine under the exemption provisions of Sec.  91.704(b) and, who 
fails to deliver the marine engine to the U.S. Customs Service by the 
end of the period of conditional admission is liable for liquidated 
damages in the amount of the bond required by applicable Customs laws 
and regulations. The maximum penalty value listed in this paragraph (d) 
is shown for calendar year 2004. Maximum penalty limits for later years 
may be adjusted based on the Consumer Price Index. The specific 
regulatory provisions for changing the maximum penalties, published in 
40 CFR part 19, reference the applicable U.S. Code citation on which 
the prohibited action is based.
    100. Section 91.1106 is amended by revising paragraphs (a)(1), 
(a)(2), (a)(5), and (c)(1) and adding paragraph (a)(6) to read as 
follows:


Sec.  91.1106  Penalties.

    (a) * * *
    (1) A person who violates Sec.  91.1103 (a)(1), (a)(4), or (a)(5), 
or a manufacturer or dealer who violates Sec.  91.1103(a)(3)(i), is 
subject to a civil penalty of not more than $32,500 for each violation.
    (2) A person other than a manufacturer or dealer who violates Sec.  
91.1103(a)(3)(i) or any person who violates Sec.  91.1103(a)(3)(ii) is 
subject to a civil penalty of not more than $2,750 for each violation.
* * * * *

[[Page 54880]]

    (5) A person who violates Sec.  91.1103 (a)(2) or (a)(6) is subject 
to a civil penalty of not more than $32,500 per day of violation.
    (6) The maximum penalty values listed in this section are shown for 
calendar year 2004. Maximum penalty limits for later years may be 
adjusted based on the Consumer Price Index. The specific regulatory 
provisions for changing the maximum penalties, published in 40 CFR part 
19, reference the applicable U.S. Code citation on which the prohibited 
action is based.
* * * * *
    (c) * * *
    (1) Administrative penalty authority. In lieu of commencing a civil 
action under paragraph (b) of this section, the Administrator shall 
assess any civil penalty prescribed in paragraph (a) of this section, 
except that the maximum amount of penalty sought against each violator 
in a penalty assessment proceeding can not exceed $270,000, unless the 
Administrator and the Attorney General jointly determine that a matter 
involving a larger penalty amount is appropriate for administrative 
penalty assessment. Any such determination by the Administrator and the 
Attorney General is not subject to judicial review. Assessment of a 
civil penalty is made by an order made on the record after opportunity 
for a hearing held in accordance with the procedures found at part 22 
of this chapter. The Administrator may compromise, or remit, with or 
without conditions, any administrative penalty which may be imposed 
under this section.
* * * * *

PART 92--CONTROL OF AIR POLLUTION FROM LOCOMOTIVES AND LOCOMOTIVE 
ENGINES

    101. The authority citation for part 92 is revised to read as 
follows:

    Authority: 42 U.S.C. 7401-7671q.

    102. Section 92.1 is amended by revising paragraphs (a) 
introductory text, (b)(3), and (b)(4) and adding paragraph (d) to read 
as follows:


Sec.  92.1  Applicability.

    (a) Except as noted in paragraphs (b) and (d) of this section, the 
provisions of this part apply to manufacturers, remanufacturers, owners 
and operators of:
* * * * *
    (b) * * *
    (3) Locomotive engines which provide only hotel power (see 40 CFR 
parts 89 and 1039 to determine if such engines are subject to EPA 
emission requirements); or
    (4) Nonroad vehicles excluded from the definition of locomotive in 
Sec.  92.2, and the engines used in such nonroad vehicles (see 40 CFR 
parts 86, 89, and 1039 to determine if such vehicles or engines are 
subject to EPA emission requirements).
* * * * *
    (d) The provisions of subpart L of this part apply to all persons.
    103. Section 92.2 is amended in paragraph (b) by revising the 
definitions for Calibration, paragraph (5) of the definition for New 
locomotive or new locomotive engine, Repower, and United States to read 
as follows:


Sec.  92.2  Definitions.

* * * * *
    (b) * * *
* * * * *
    Calibration means the set of specifications, including tolerances, 
specific to a particular design, version, or application of a 
component, or components, or assembly capable of functionally 
describing its operation over its working range. This definition does 
apply to Subpart B of this part.
* * * * *
    New locomotive or new locomotive engine means: * * *
    (5) Notwithstanding paragraphs (1) through (3) of this definition, 
locomotives and locomotive engines which are owned by a small railroad 
and which have never been manufactured or remanufactured into a 
certified configuration are not new.
* * * * *
    Repower means replacement of the engine in a previously used 
locomotive with a freshly manufactured locomotive engine. Replacing a 
locomotive engine with a freshly manufactured locomotive engine in a 
locomotive that has a refurbished or reconditioned chassis such that 
less than 25 percent of the parts of the locomotive were previously 
used (as weighted by dollar value) is not repowering.
* * * * *
    United States means the States, the District of Columbia, the 
Commonwealth of Puerto Rico, the Commonwealth of the Northern Mariana 
Islands, Guam, American Samoa, and the U.S. Virgin Islands.
* * * * *
    104. Section 92.109 is amended by revising paragraph (c)(3) to read 
as follows:


Sec.  92.109  Analyzer specifications.

* * * * *
    (c) * * *
    (3) Alcohols and Aldehydes. The sampling and analysis procedures 
for alcohols and aldehydes, where applicable, shall be approved by the 
Administrator prior to the start of testing. Procedures are allowed if 
they are consistent the general requirements of 40 CFR part 1065, 
subpart I, for sampling and analysis of alcohols and aldehydes, and 
with good engineering practice.
* * * * *
    105. Section 92.114 is amended by revising paragraphs (d)(2) 
introductory text and (e)(1) to read as follows:


Sec.  92.114  Exhaust gas and particulate sampling and analytical 
system.

* * * * *
    (d) * * *
    (2) For engine testing, either a locomotive-type or a facility-type 
exhaust system (or a combination system) may be used. The exhaust 
backpressure for engine testing shall be set between 90 and 100 percent 
of the maximum backpressure that will result with the exhaust systems 
of the locomotives in which the engine will be used. Backpressure less 
than 90 percent of the maximum value is also allowed, provided the 
backpressure is within 0.07 psi of the maximum value. The facility-type 
exhaust system shall meet the following requirements:
* * * * *
    (e) * * *
    (1) Dilution of the exhaust prior to sampling is allowed for 
gaseous emissions. The equipment and methods used for dilution, 
sampling and analysis shall comply with the requirements of 40 CFR part 
1065, with the following exceptions and additional requirements:
    (i) Proportional sampling and heat exchangers are not required;
    (ii) Larger minimum dimensions for the dilution tunnel(s) shall be 
specified by the Administrator;
    (iii) Other modifications may be made with written approval from 
the Administrator.
* * * * *
    106. Section 92.123 is amended by revising paragraph (a)(2)(ii) to 
read as follows:


Sec.  92.123  Test procedure; general requirements.

    (a) * * *
    (2) * * *
    (ii) None of the measured opacity values for the stack tested are 
greater than three-quarters of the level allowed by any of the 
applicable smoke standards.
* * * * *
    107. Section 92.124 is amended by revising paragraph (f) to read as 
follows:

[[Page 54881]]

Sec.  92.124  Test sequence; general requirements.

* * * * *
    (f) The required test sequence is described in Table B124-1 of this 
section, as follows:

                       Table B124-1.--Test Sequence for Locomotives and Locomotive Engines
----------------------------------------------------------------------------------------------------------------
                                                                                                Power, and fuel
          Mode Number              Notch setting         Time in notch          Emissions         consumption
                                                                                measured**          measured
----------------------------------------------------------------------------------------------------------------
Warmup.........................  Notch 8..........  5  1 min..  None.............  None.
Warmup.........................  Lowest Idle......  15 min maximum (after   None.............  None.
                                                     engine speed reaches
                                                     lowest idle speed).
1a.............................  Low Idle*........  6 min minimum.........  All..............  Both.
1..............................  Normal Idle......  6 min minimum.........  All..............  Both.
2..............................  Dynamic Brake*...  6 min minimum.........  All..............  Both.
3..............................  Notch 1..........  6 min minimum.........  All..............  Both.
4..............................  Notch 2..........  6 min minimum.........  All..............  Both.
5..............................  Notch 3..........  6 min minimum.........  All..............  Both.
6..............................  Notch 4..........  6 min minimum.........  All..............  Both.
7..............................  Notch 5..........  6 min minimum.........  All..............  Both.
8..............................  Notch 6..........  6 min minimum.........  All..............  Both.
9..............................  Notch 7..........  6 min minimum.........  All..............  Both.
10.............................  Notch 8..........  15 min minimum........  All..............  Both.
----------------------------------------------------------------------------------------------------------------
* Omit if not so equipped.
** The EPA test sequence for locomotives and locomotive engines may be performed once, with gaseous, particulate
  and smoke measurements performed simultaneously, or it may be performed twice with gaseous, and particulate
  measurements performed during one test sequence and smoke measurements performed during the other test
  sequence.

    108. Section 92.132 is amended by revising paragraphs 
(b)(3)(iii)(D)(2) and (d) to read as follows:


Sec.  92.132  Calculations.

* * * * *
    (b) * * *
    (3) * * *
    (iii) * * *
    (D) * * *
    (2) If a CO instrument that meets the criteria specified in 40 CFR 
part 1065, subpart C, is used without a sample dryer according to 40 
CFR 1065.145, COem must be substituted directly for 
COe and COdm must be substituted directly for 
COd.
* * * * *
    (d) NOX correction factor. (1) NOX emission 
rates (MNOx mode) shall be adjusted to account for the 
effects of humidity and temperature by multiplying each emission rate 
by KNOx, which is calculated from the following equations:
KNOx = (K)(1 + (0.25(logK)2)\1/2\)
K = (KH)(KT)
KH = 
[C1+C2exp((-0.0143)(10.714))]/
[C1+C2exp((-0.0143)(1000H))]
C1 = -8.7 +164.5exp(-0.0218(A/F)wet)
C2 = 130.7 +3941exp(-0.0248(A/F)wet)

Where:
(A/F)wet = Mass of moist air intake divided by mass of fuel 
intake.
KT = 1/[1-0.0107(T30-TA)] 
for tests conducted at ambient temperatures below 30[deg]C.
KT = 1.00 for tests conducted at ambient temperatures at or 
above 30[deg]C.
T30 = The measured intake manifold air temperature in the 
locomotive when operated at 30[deg]C (or 100[deg]C, where intake 
manifold air temperature is not available).
TA = The measured intake manifold air temperature in the 
locomotive as tested (or the ambient temperature ([deg]C), where intake 
manifold air temperature is not available).
* * * * *
    109. Section 92.203 is amended by revising paragraph (d)(1)(i) to 
read as follows:


Sec.  92.203  Application for certification.

* * * * *
    (d) Required content. Each application must include the following 
information:
    (1)(i) A description of the basic engine design including, but not 
limited to, the engine family specifications, the provisions of which 
are contained in Sec.  92.204;
* * * * *
    110. Section 92.205 is amended by revising paragraph (a) 
introductory text to read as follows:


Sec.  92.205  Prohibited controls, adjustable parameters.

    (a) Any system installed on, or incorporated in, a new locomotive 
or new locomotive engine to enable such locomotive or locomotive engine 
to conform to standards contained in this part:
* * * * *
    111. Section 92.208 is amended by revising paragraph (a) to read as 
follows:


Sec.  92.208  Certification.

    (a) Paragraph (a) of this section applies to manufacturers of new 
locomotives and new locomotive engines. If, after a review of the 
application for certification, test reports and data acquired from a 
freshly manufactured locomotive or locomotive engine or from a 
development data engine, and any other information required or obtained 
by EPA, the Administrator determines that the application is complete 
and that the engine family meets the requirements of the Act and this 
part, he/she will issue a certificate of conformity with respect to 
such engine family except as provided by paragraph (c)(3) of this 
section. The certificate of conformity is valid for each engine family 
from the date of issuance by EPA until 31 December of the model year or 
calendar year for which it is issued and upon such terms and conditions 
as the Administrator deems necessary or appropriate to assure that the 
production locomotives or engines covered by the certificate will meet 
the requirements of the Act and of this part.
* * * * *
    112. Section 92.210 is amended by revising paragraphs (b)(1), 
(b)(2), (d)(2), and (d)(3) to read as follows:


Sec.  92.210  Amending the application and certificate of conformity.

* * * * *
    (b) A manufacturer's or remanufacturer's request to amend the 
application or the existing certificate of

[[Page 54882]]

conformity shall include the following information:
    (1) A full description of the change to be made in production, or 
of the locomotives or engines to be added;
    (2) Engineering evaluations or data showing that the locomotives or 
engines as modified or added will comply with all applicable emission 
standards; and
* * * * *
    (d) * * *
    (2) If the Administrator determines that the change or new 
locomotive(s) or engine(s) meets the requirements of this part and the 
Act, the appropriate certificate of conformity shall be amended.
    (3) If the Administrator determines that the changed or new 
locomotive(s) or engine(s) does not meet the requirements of this part 
and the Act, the certificate of conformity will not be amended. The 
Administrator shall provide a written explanation to the manufacturer 
or remanufacturer of the decision not to amend the certificate. The 
manufacturer or remanufacturer may request a hearing on a denial.
* * * * *
    113. Section 92.212 is amended by revising paragraphs (b)(2)(v)(G), 
(c)(2)(v)(A), and(c)(2)(v)(D)(2) to read as follows:


Sec.  92.212  Labeling.

* * * * *
    (b) * * *
    (2) * * *
    (v) * * *
    (G) The standards and/or FELs to which the locomotive was 
certified.
    (c) * * *
    (2) * * *
    (v) * * *
    (A) The label heading: Engine Emission Control Information.
* * * * *
    (D) * * *
    (2) This locomotive and locomotive engine conform to U.S. EPA 
regulations applicable to locomotives and locomotive engines originally 
manufactured on or after January 1, 2002 and before January 1, 2005; or
* * * * *


114.  Section 92.215 is amended by revising paragraphs (a)(2)(i)(A) and 
(b) to read as follows:


Sec.  92.215  Maintenance of records; submittal of information; right 
of entry.

    (a) * * *
    (2) * * *
    (i) * * *
    (A) In the case where a current production engine is modified for 
use as a certification engine or in a certification locomotive, a 
description of the process by which the engine was selected and of the 
modifications made. In the case where the certification locomotive or 
the engine for a certification locomotive is not derived from a current 
production engine, a general description of the buildup of the engine 
(e.g., whether experimental heads were cast and machined according to 
supplied drawings). In the cases in the previous two sentences, a 
description of the origin and selection process for fuel system 
components, ignition system components, intake-air pressurization and 
cooling-system components, cylinders, pistons and piston rings, exhaust 
smoke control system components, and exhaust aftertreatment devices as 
applicable, shall be included. The required descriptions shall specify 
the steps taken to assure that the certification locomotive or 
certification locomotive engine, with respect to its engine, 
drivetrain, fuel system, emission-control system components, exhaust 
aftertreatment devices, exhaust smoke control system components or any 
other devices or components as applicable, that can reasonably be 
expected to influence exhaust emissions will be representative of 
production locomotives or locomotive engines and that either: all 
components and/or locomotive or engine, construction processes, 
component inspection and selection techniques, and assembly techniques 
employed in constructing such locomotives or engines are reasonably 
likely to be implemented for production locomotives or engines; or that 
they are as close as practicable to planned construction and assembly 
process.
* * * * *
    (b) The manufacturer or remanufacturer of any locomotive or 
locomotive engine subject to any of the standards prescribed in this 
part shall submit to the Administrator, at the time of issuance by the 
manufacturer or remanufacturer, copies of all instructions or 
explanations regarding the use, repair, adjustment, maintenance, or 
testing of such locomotive or engine, relevant to the control of 
crankcase, or exhaust emissions issued by the manufacturer or 
remanufacturer, for use by other manufacturers or remanufacturers, 
assembly plants, distributors, dealers, owners and operators. Any 
material not translated into the English language need not be submitted 
unless specifically requested by the Administrator.
* * * * *


Sec.  92.216  [Amended]

    115. Section 92.216 is amended by removing and reserving paragraph 
(a)(2).
    116. Section 92.512 is amended by revising paragraph (e) to read as 
follows:


Sec.  92.512  Suspension and revocation of certificates of conformity.

* * * * *
    (e) The Administrator shall notify the manufacturer or 
remanufacturer in writing of any suspension or revocation of a 
certificate of conformity in whole or in part; a suspension or 
revocation is effective upon receipt of such notification or thirty 
days from the time an engine family is deemed to be in noncompliance 
under Sec. Sec.  92.508(d), 92.510(a), 92.510(b) or 92.511(f), 
whichever is earlier, except that the certificate is immediately 
suspended with respect to any failed locomotives or locomotive engines 
as provided for in paragraph (a) of this section.
* * * * *
    117. Section 92.906 is amended by revising paragraph (a) 
introductory text to read as follows:


Sec.  92.906  Manufacturer-owned, remanufacturer-owned exemption and 
display exemption.

    (a) Any manufacturer-owned or remanufacturer-owned locomotive or 
locomotive engine is exempt from Sec.  92.1103, without application, if 
the manufacturer complies with the following terms and conditions:
* * * * *
    118. Section 92.1106 is amended by revising paragraphs (a)(1), 
(a)(2), (a)(5), and (c)(1) and adding paragraph (a)(6) to read as 
follows:


Sec.  92.1106  Penalties.

    (a) * * *
    (1) A person who violates Sec.  92.1103 (a)(1), (a)(4), or (a)(5), 
or a manufacturer, remanufacturer, dealer or railroad who violates 
Sec.  92.1103(a)(3)(i) or (iii) is subject to a civil penalty of not 
more than $32,500 for each violation.
    (2) A person other than a manufacturer, remanufacturer, dealer, or 
railroad who violates Sec.  92.1103(a)(3)(i) or any person who violates 
Sec.  92.1103(a)(3)(ii) is subject to a civil penalty of not more than 
$2,750 for each violation.
* * * * *
    (5) A person who violates Sec.  92.1103(a)(2) is subject to a civil 
penalty of not more than $32,500 per day of violation.
    (6) The maximum penalty values listed in this section are shown for 
calendar year 2004. Maximum penalty limits for later years may be 
adjusted based on the Consumer Price Index. The

[[Page 54883]]

specific regulatory provisions for changing the maximum penalties, 
published in 40 CFR part 19, reference the applicable U.S. Code 
citation on which the prohibited action is based.
* * * * *
    (c) * * *
    (1) Administrative penalty authority. In lieu of commencing a civil 
action under paragraph (b) of this section, the Administrator may 
assess any civil penalty prescribed in paragraph (a) of this section, 
except that the maximum amount of penalty sought against each violator 
in a penalty assessment proceeding shall not exceed $270,000, unless 
the Administrator and the Attorney General jointly determine that a 
matter involving a larger penalty amount is appropriate for 
administrative penalty assessment. Any such determination by the 
Administrator and the Attorney General is not subject to judicial 
review. Assessment of a civil penalty shall be by an order made on the 
record after opportunity for a hearing held in accordance with the 
procedures found at part 22 of this chapter. The Administrator may 
compromise, or remit, with or without conditions, any administrative 
penalty which may be imposed under this section.
* * * * *
    119. Appendix IV to part 92 is amended by revising paragraph (d)(1) 
to read as follows:

Appendix IV to Part 92--Guidelines for Determining Equivalency Between 
Emission Measurement Systems

* * * * *
    (d) Minimum number of tests. The recommended minimum number of 
tests with each system necessary to determine equivalency is:
    (1) Four 10-mode locomotive or locomotive engine tests, 
conducted in accordance with the provisions of Subpart B of this 
part; or
* * * * *

PART 94--CONTROL OF AIR POLLUTION FROM MARINE COMPRESSION-IGNITION 
ENGINES

    120. The authority citation for part 94 is revised to read as 
follows:

    Authority: 42 U.S.C. 7401--7671q.

    121. Section 94.2 is amended in paragraph (b) by revising the 
definitions of marine engine, Marine vessel, and United States and 
adding a definition of ``Amphibious vehicle'' in alphabetical order to 
read as follows:


Sec.  94.2  Definitions.

* * * * *
    Amphibious vehicle means a vehicle with wheels or tracks that is 
designed primarily for operation on land and secondarily for operation 
in water.
* * * * *
    Marine engine means a nonroad engine that is installed or intended 
to be installed on a marine vessel. This includes a portable auxiliary 
marine engine only if its fueling, cooling, or exhaust system is an 
integral part of the vessel. There are two kinds of marine engines:
    (1) Propulsion marine engine means a marine engine that moves a 
vessel through the water or directs the vessel's movement.
    (2) Auxiliary marine engine means a marine engine not used for 
propulsion.
    Marine vessel has the meaning given in 1 U.S.C. 3, except that it 
does not include amphibious vehicles. The definition in 1 U.S.C. 3 very 
broadly includes every craft capable of being used as a means of 
transportation on water.
* * * * *
    United States means the States, the District of Columbia, the 
Commonwealth of Puerto Rico, the Commonwealth of the Northern Mariana 
Islands, Guam, American Samoa, and the U.S. Virgin Islands.
* * * * *
    122. Section 94.107 is amended by revising paragraph (b) to read as 
follows:


Sec.  94.107  Determination of maximum test speed.

* * * * *
    (b) Generation of lug curve. Prior to beginning emission testing, 
generate maximum measured brakepower versus engine speed data points 
using the applicable method specified in 40 CFR 1065.510. These data 
points form the lug curve. It is not necessary to generate the entire 
lug curve. For the portion of the curve where power increases with 
increasing speed, it is not necessary to generate points with power 
less than 90 percent of the maximum power value. For the portion of the 
curve where power decreases with increasing speed, it is not necessary 
to generate points with power less than 75 percent of the maximum power 
value.
* * * * *
    123. Section 94.109 is amended by revising paragraph (b) to read as 
follows:


Sec.  94.109  Test procedures for Category 3 marine engines.

* * * * *
    (b) Analyzers meeting the specifications of either 40 CFR part 
1065, subpart C, or ISO 8178-1 (incorporated by reference in Sec.  
94.5) shall be used to measure THC and CO.
* * * * *
    124. Section 94.904 is amended by adding a new paragraph (c) to 
read as follows:


Sec.  94.904  Exemptions.

* * * * *
    (c) If you want to take an action with respect to an exempted or 
excluded engine that is prohibited by the exemption or exclusion, such 
as selling it, you need to certify the engine. We will issue a 
certificate of conformity if you send us an application for 
certification showing that you meet all the applicable requirements 
from this part 94 and pay the appropriate fee. Also, in some cases, we 
may allow manufacturers to modify the engine as needed to make it 
identical to engines already covered by a certificate. We would base 
such an approval on our review of any appropriate documentation. These 
engines must have emission control information labels that accurately 
describe their status.
    125. Section 94.907 is amended by revising paragraphs (a), (b), 
(c), (d) introductory text, (d)(1)(ii), (d)(2), (d)(3)(i), (d)(4), and 
(g) and adding introductory text to paragraph (h) to read as follows:


Sec.  94.907  Engine dressing exemption.

    (a) General provisions. If you are an engine manufacturer, this 
section allows you to introduce new marine engines into commerce if 
they are already certified to the requirements that apply to 
compression-ignition engines under 40 CFR parts 85 and 86 or 40 CFR 
part 89, 92 or 1039 for the appropriate model year. If you comply with 
all the provisions of this section, we consider the certificate issued 
under 40 CFR part 86, 89, 92, or 1039 for each engine to also be a 
valid certificate of conformity under this part 94 for its model year, 
without a separate application for certification under the requirements 
of this part 94.
    (b) Boat builder provisions. If you are not an engine manufacturer, 
you may install an engine certified for the appropriate model year 
under 40 CFR part 86, 89, 92, or 1039 in a marine vessel as long as the 
engine has been properly labeled as specified in paragraph (d)(5) of 
this section and you do not make any of the changes described in 
paragraph (d)(3) of this section. If you modify the non-marine engine 
in any of the ways described in paragraph (d)(3) of this section, we 
will consider you a manufacturer of a new marine engine. Such engine 
modifications prevent you from using the provisions of this section.

[[Page 54884]]

    (c) Liability. Engines for which you meet the requirements of this 
section are exempt from all the requirements and prohibitions of this 
part, except for those specified in this section. Engines exempted 
under this section must meet all the applicable requirements from 40 
CFR parts 85 and 86 or 40 CFR part 89, 92, or 1039. This paragraph (c) 
applies to engine manufacturers, boat builders who use such an engine, 
and all other persons as if the engine were used in its originally 
intended application. The prohibited acts of Sec.  94.1103(a)(1) apply 
to these new engines and vessels; however, we consider the certificate 
issued under 40 CFR part 86, 89, 92, or 1039 for each engine to also be 
a valid certificate of conformity under this part 94 for its model 
year. If we make a determination that these engines do not conform to 
the regulations during their useful life, we may require you to recall 
them under this part 94 or under 40 CFR part 85, 89, 92, or 1039.
    (d) Specific requirements. If you are an engine manufacturer and 
meet all the following criteria and requirements regarding your new 
marine engine, the engine is eligible for an exemption under this 
section:
    (1) * * *
    (ii) Land-based nonroad diesel engines (40 CFR part 89 or 1039).
* * * * *
    (2) The engine must have the label required under 40 CFR part 86, 
89, 92, or 1039.
* * * * *
    (3) * * *
    (i) Change any fuel system parameters from the certified 
configuration, or change, remove, or fail to properly install any other 
component, element of design, or calibration specified in the engine 
manufacturer's application for certification. This includes 
aftertreatment devices and all related components.
* * * * *
    (4) You must show that fewer than 50 percent of the engine model's 
total sales for the model year, from all companies, are used in marine 
applications, as follows:
    (i) If you are the original manufacturer of the engine, base this 
showing on your sales information.
    (ii) In all other cases, you must get the original manufacturer of 
the engine to confirm this based on its sales information.
* * * * *
    (g) Failure to comply. If your engines do not meet the criteria 
listed in paragraph (d) of this section, they will be subject to the 
standards, requirements, and prohibitions of this part 94 and the 
certificate issued under 40 CFR part 86, 89, 92, or 1039 will not be 
deemed to also be a certificate issued under this part 94. Introducing 
these engines into commerce without a valid exemption or certificate of 
conformity under this part violates the prohibitions in 40 CFR 
94.1103(a)(1).
    (h) Data submission. * * *
* * * * *
    (i) Participation in averaging, banking and trading. Engines 
adapted for marine use under this section may not generate or use 
emission credits under this part 94. These engines may generate credits 
under the ABT provisions in 40 CFR part 86, 89, 92, or 1039, as 
applicable. These engines must use emission credits under 40 CFR part 
86, 89, 92, or 1039 as applicable if they are certified to an FEL that 
exceeds an applicable standard.
    126. A new Sec.  94.912 is added to subpart J to read as follows:


Sec.  94.912  Optional certification to land-based standards for 
auxiliary marine engines.

    (a) If an engine meets all the following criteria, it is exempt 
from the requirements of this part:
    (1) The marine engines must be identical in all material respects 
to a land-based engine covered by a valid certificate of conformity for 
the appropriate model year showing that it meets emission standards for 
engines of that power rating under 40 CFR part 89 or 1039.
    (2) The engines may not be used as propulsion marine engines.
    (3) The engines must have the emission control information label we 
require in 40 CFR 89.110 or 40 CFR 1039.135, including additional 
information to identify the engine as certified also for auxiliary 
marine applications.
    (4) The number of auxiliary marine engines from the engine family 
must be smaller than the number of land-based engines from the engine 
family.
    (5) In your application for certification, you must identify your 
plans to produce engines for both land-based and auxiliary marine 
applications, including projected sales of marine engines. If the 
projected marine sales are substantial, we may ask for the year-end 
report of production volumes to include actual auxiliary marine engine 
sales.
    (b) The only requirements or prohibitions from this part that apply 
to an engine that is exempt under this section are in this section.
    (c) If your engines do not meet the criteria listed in paragraph 
(a) of this section, they will be subject to all the requirements and 
prohibitions of this part. Introducing these engines into commerce 
without a valid exemption or certificate of conformity violates the 
prohibitions in Sec.  94.1103.
    (d) Engines exempted under this section are subject to all the 
requirements affecting engines under 40 CFR part 89 or 1039. The 
requirements and restrictions of 40 CFR part 89 or 1039 apply to anyone 
manufacturing these engines, anyone manufacturing equipment that uses 
these engines, and all other persons in the same manner as if these 
were land-based nonroad diesel engines.
    (e) If you produce marine engines under the provisions of this 
section, include them in your emission-credit calculations in 40 CFR 
part 89 or 1039, as applicable. Do not count these marine engines in 
emission-credit calculations under 40 CFR part 94.
    (f) The requirements for vessel manufacturers, owners, and 
operators in subpart K of this part apply to these engines whether they 
are certified under this part 94 or another part as allowed by this 
section.
    127. Section 94.1001 is revised to read as follows:


Sec.  94.1001  Applicability.

    The requirements of this subpart are applicable to manufacturers, 
owners, and operators of marine vessels that contain engines with per-
cylinder displacement of at least 2.5 liters subject to the provisions 
of subpart A of this part, except as otherwise specified.
    128. Section 94.1103 is amended by redesignating (b)(3)(iv) as 
(b)(3)(vii), revising paragraph (b)(3)(ii) and (b)(3)(iii), and adding 
paragraphs (b)(3)(iv) and (b)(3)(viii) to read as follows:


Sec.  94.1103  Prohibited acts.

* * * * *
    (b) * * *
    (3) * * *
    (ii) The engine manufacturer or its agent takes ownership and 
possession of the engine being replaced or confirms that the engine has 
been destroyed; and
    (iii) If the engine being replaced was not certified to any 
emission standards under this part, the replacement engine must have a 
permanent label with your corporate name and trademark and the 
following language, or similar alternate language approved by the 
Administrator:
    THIS ENGINE DOES NOT COMPLY WITH U.S. EPA MARINE EMISSION 
REQUIREMENTS. SELLING OR INSTALLING THIS ENGINE FOR ANY PURPOSE OTHER 
THAN TO REPLACE A MARINE ENGINE BUILT BEFORE

[[Page 54885]]

JANUARY 1, [Insert appropriate year reflecting when the earliest tier 
of standards began to apply to engines of that size and type] MAY BE A 
VIOLATION OF FEDERAL LAW SUBJECT TO CIVIL PENALTY.
    (iv) If the engine being replaced was certified to emission 
standards less stringent than those in effect when you produce the 
replacement engine, the replacement engine must have a permanent label 
with your corporate name and trademark and the following language, or 
similar alternate language approved by the Administrator:
    THIS ENGINE COMPLIES WITH U.S. EPA MARINE EMISSION REQUIREMENTS 
UNDER THE PROVISIONS OF 40 CFR 94.1103(b)(3). SELLING OR INSTALLING 
THIS ENGINE FOR ANY PURPOSE OTHER THAN TO REPLACE A MARINE ENGINE BUILT 
BEFORE JANUARY 1, [Insert appropriate year reflecting when the next 
tier of emission standards began to apply] MAY BE A VIOLATION OF 
FEDERAL LAW SUBJECT TO CIVIL PENALTY.
* * * * *
    (viii) The provisions of this section may not be used to circumvent 
emission standards that apply to new engines under this part.
    129. Section 94.1106 is amended by revising the introductory text 
and paragraphs (a)(1), (a)(2), (c)(1), and (d) to read as follows:


Sec.  94.1106  Penalties.

    This section specifies actions that are prohibited and the maximum 
civil penalties that we can assess for each violation. The maximum 
penalty values listed in paragraphs (a) and (c) of this section are 
shown for calendar year 2004. As described in paragraph (d) of this 
section, maximum penalty limits for later years are set forth in 40 CFR 
part 19.
    (a) * * *
    (1) A person who violates Sec.  94.1103(a)(1), (a)(4), (a)(5), 
(a)(6), or (a)(7)(iv) or a manufacturer or dealer who violates Sec.  
94.1103(a)(3)(i) or (iii) or Sec.  94.1103(a)(7) is subject to a civil 
penalty of not more than $32,500 for each violation.
    (2) A person other than a manufacturer or dealer who violates Sec.  
94.1103(a)(3)(i) or (iii) or Sec.  94.1103(a)(7)(i), (ii), or (iii) or 
any person who violates Sec.  94.1103(a)(3)(ii) is subject to a civil 
penalty of not more than $2,750 for each violation.
* * * * *
    (c) * * *
    (1) Administrative penalty authority. Subject to 42 U.S.C. 7524(c), 
in lieu of commencing a civil action under paragraph (b) of this 
section, the Administrator may assess any civil penalty prescribed in 
paragraph (a) of this section, except that the maximum amount of 
penalty sought against each violator in a penalty assessment proceeding 
shall not exceed $270,000, unless the Administrator and the Attorney 
General jointly determine that a matter involving a larger penalty 
amount is appropriate for administrative penalty assessment. Any such 
determination by the Administrator and the Attorney General is not 
subject to judicial review. Assessment of a civil penalty shall be by 
an order made on the record after opportunity for a hearing held in 
accordance with the procedures found at part 22 of this chapter. The 
Administrator may compromise, or remit, with or without conditions, any 
administrative penalty which may be imposed under this section.
* * * * *
    (d) The maximum penalty values listed in paragraphs (a) and (c) of 
this section are shown for calendar year 2004. Maximum penalty limits 
for later years may be adjusted based on the Consumer Price Index. The 
specific regulatory provisions for changing the maximum penalties, 
published in 40 CFR part 19, reference the applicable U.S. Code 
citation on which the prohibited action is based.

PART 1039--CONTROL OF EMISSIONS FROM NEW AND IN-USE NONROAD 
COMPRESSION-IGNITION ENGINES

    130. The authority citation for part 1039 is revised to read as 
follows:

    Authority: 42 U.S.C. 7401-7671q.

    131. Section 1039.1 is amended by revising paragraph (c) to read as 
follows:


Sec.  1039.1  Does this part apply for my engines?

* * * * *
    (c) The definition of nonroad engine in 40 CFR 1068.30 excludes 
certain engines used in stationary applications. These engines are not 
required to comply with this part, except for the requirements in Sec.  
1039.20. In addition, if these engines are uncertified, the 
prohibitions in 40 CFR 1068.101 restrict their use as nonroad engines.
* * * * *
    132. Section 1039.5 is amended by revising paragraphs (b)(1)(iii) 
and (b)(2) to read as follows:


Sec.  1039.5  Which engines are excluded from this part's requirements?

* * * * *
    (b) Marine engines. (1) * * *
    (iii) Engines that are exempt from the standards of 40 CFR part 94 
pursuant to the provisions of 40 CFR part 94 (except for the provisions 
of 40 CFR 94.907 or 94.912). For example, an engine that is exempt 
under 40 CFR 94.906 because it is a manufacturer-owned engine is not 
subject to the provisions of this part 1039.
* * * * *
    (2) Marine engines are subject to the provisions of this part 1039 
if they are exempt from 40 CFR part 94 based on the engine-dressing 
provisions of 40 CFR 94.907 or the common-family provisions of 40 CFR 
94.912.
* * * * *
    133. Section 1039.10 is amended by revising the introductory text 
to read as follows:


Sec.  1039.10  How is this part organized?

    The regulations in this part 1039 contain provisions that affect 
both engine manufacturers and others. However, the requirements of this 
part are generally addressed to the engine manufacturer. The term 
``you'' generally means the engine manufacturer, as defined in Sec.  
1039.801. This part 1039 is divided into the following subparts:
* * * * *
    134. Section 1039.104 is amended by revising paragraph (a)(4)(iii) 
to read as follows:


Sec.  1039.104  Are there interim provisions that apply only for a 
limited time?

* * * * *
    (a) * * *
    (4) * * *
    (iii) All other offset-using engines must meet the standards and 
other provisions that apply in model year 2011 for engines in the 19-
130 kW power categories, in model year 2010 for engines in the 130-560 
kW power category, or in model year 2014 for engines above 560 kW. Show 
that engines meet these emission standards by meeting all the 
requirements of Sec.  1068.265. You must meet the labeling requirements 
in Sec.  1039.135, but add the following statement instead of the 
compliance statement in Sec.  1039.135(c)(12): ``THIS ENGINE MEETS U.S. 
EPA EMISSION STANDARDS UNDER 40 CFR 1039.104(a).'' For power categories 
with a percentage phase-in, these engines should be treated as phase-in 
engines for purposes of determining compliance with phase-in 
requirements.
* * * * *
    135. Section 1039.125 is amended by revising paragraph (g) 
introductory text to read as follows:

[[Page 54886]]

Sec.  1039.125  What maintenance instructions must I give to buyers?

* * * * *
    (g) Payment for scheduled maintenance. Owners are responsible for 
properly maintaining their engines. This generally includes paying for 
scheduled maintenance. However, manufacturers must pay for scheduled 
maintenance during the useful life if it meets all the following 
criteria:
* * * * *
    136. Section 1039.130 is amended by revising paragraph (b)(3) to 
read as follows:


Sec.  1039.130  What installation instructions must I give to equipment 
manufacturers?

* * * * *
    (b) * * *
    (3) Describe the instructions needed to properly install the 
exhaust system and any other components. Include instructions 
consistent with the requirements of Sec.  1039.205(u).
* * * * *
    137. Section 1039.225 is amended by revising the section heading 
and adding paragraphs (a)(3) and (f) to read as follows:


Sec.  1039.225  How do I amend my application for certification to 
include new or modified engines or to change an FEL?

* * * * *
    (a) * * *
    (3) Modify an FEL for an engine family, as described in paragraph 
(f) of this section.
* * * * *
    (f) You may ask to change your FEL in the following cases:
    (1) You may ask to raise your FEL after the start of production. 
You may not apply the higher FEL to engines you have already introduced 
into commerce. Use the appropriate FELs with corresponding sales 
volumes to calculate your average emission level, as described in 
subpart H of this part. In your request, you must demonstrate that you 
will still be able to comply with the applicable average emission 
standards as specified in subparts B and H of this part.
    (2) You may ask to lower the FEL for your engine family after the 
start of production only when you have test data from production 
engines indicating that your engines comply with the lower FEL. You may 
create a separate subfamily with the lower FEL. Otherwise, you must use 
the higher FEL for the family to calculate your average emission level 
under subpart H of this part.
    (3) If you change the FEL during production, you must include the 
new FEL on the emission control information label for all vehicles 
produced after the change.
    138. Section 1039.240 is amended by revising paragraphs (a) and (b) 
to read as follows:


Sec.  1039.240  How do I demonstrate that my engine family complies 
with exhaust emission standards?

    (a) For purposes of certification, your engine family is considered 
in compliance with the applicable numerical emission standards in Sec.  
1039.101(a) and (b), Sec.  1039.102(a) and (b), Sec.  1039.104, or 
Sec.  1039.105 if all emission-data engines representing that family 
have test results showing deteriorated emission levels at or below 
these standards. (Note: if you participate in the ABT program in 
subpart H of this part, your FELs are considered to be the applicable 
emission standards with which you must comply.)
    (b) Your engine family is deemed not to comply if any emission-data 
engine representing that family has test results showing a deteriorated 
emission level above an applicable FEL or emission standard from Sec.  
1039.101, Sec.  1039.102, Sec.  1039.104, or Sec.  1039.105 for any 
pollutant.
* * * * *


Sec.  1039.510  [Amended]

    139. Section 1039.510 is amended by removing paragraphs (c) and 
(d).
    140. Section 1039.605 is amended by revising the section heading 
and adding paragraph (g) to read as follows:


Sec.  1039.605  What provisions apply to engines certified under the 
motor-vehicle program?

* * * * *
    (g) Participation in averaging, banking and trading. Engines 
adapted for nonroad use under this section may not generate or use 
emission credits under this part 1039. These engines may generate 
credits under the ABT provisions in 40 CFR part 86. These engines must 
use emission credits under 40 CFR part 86 if they are certified to an 
FEL that exceeds an applicable standard under 40 CFR part 86.
    141. Section 1039.610 is amended by revising the section heading 
and adding paragraph (g) to read as follows:


Sec.  1039.610  What provisions apply to vehicles certified under the 
motor-vehicle program?

* * * * *
    (g) Participation in averaging, banking and trading. Vehicles 
adapted for nonroad use under this section may not generate or use 
emission credits under this part 1039. These vehicles may generate 
credits under the ABT provisions in 40 CFR part 86. These vehicles must 
be included in the calculation of the applicable fleet average in 40 
CFR part 86.
    142. Section 1039.625 is amended by revising paragraph (j) to read 
as follows:


Sec.  1039.625  What requirements apply under the program for 
equipment-manufacturer flexibility?

* * * * *
    (j) Provisions for engine manufacturers. As an engine manufacturer, 
you may produce exempted engines as needed under this section. You do 
not have to request this exemption for your engines, but you must have 
written assurance from equipment manufacturers that they need a certain 
number of exempted engines under this section. Send us an annual report 
of the engines you produce under this section, as described in Sec.  
1039.250(a). For engines produced under the provisions of paragraph 
(a)(2) of this section, you must certify the engines under this part 
1039. For all other exempt engines, the engines must meet the emission 
standards in paragraph (e) of this section and you must meet all the 
requirements of Sec.  1068.265. If you show under Sec.  1068.265(c) 
that the engines are identical in all material respects to engines that 
you have previously certified to one or more FELs above the standards 
specified in paragraph (e) of this section, you must supply sufficient 
credits for these engines. Calculate these credits under subpart H of 
this part using the previously certified FELs and the alternate 
standards. You must meet the labeling requirements in 40 CFR 89.110, 
but add the following statement instead of the compliance statement in 
40 CFR 89.110(b)(10):
    THIS ENGINE MEETS U.S. EPA EMISSION STANDARDS UNDER 40 CFR 
1039.625. SELLING OR INSTALLING THIS ENGINE FOR ANY PURPOSE OTHER THAN 
FOR THE EQUIPMENT FLEXIBILITY PROVISIONS OF 40 CFR 1039.625 MAY BE A 
VIOLATION OF FEDERAL LAW SUBJECT TO CIVIL PENALTY.
* * * * *
    143. Section 1039.655 is amended by revising paragraph (a)(3) to 
read as follows:


Sec.  1039.655  What special provisions apply to engines sold in Guam, 
American Samoa, or the Commonwealth of the Northern Mariana Islands?

    (a) * * *
    (3) You meet all the requirements of Sec.  1068.265.
* * * * *

[[Page 54887]]

    144. Section 1039.705 amended by adding text to paragraph (c)(4) to 
read as follows:


Sec.  1039.705  How do I generate and calculate emission credits?

* * * * *
    (c) * * *
    (4) Engines for which the location of first retail sale is in a 
state that has applicable emission regulations for that model year. For 
example, you may not include engines sold in California if it has 
emission standards for these engines, and you may not include engines 
sold in other states that adopt California's emission standards under 
Clean Air Act section 209(e)(2)(B).
* * * * *
    145. Section 1039.740 amended by adding paragraph (b)(4) to read as 
follows:


Sec.  1039.740  What restrictions apply for using emission credits?

* * * * *
    (b) * * *
    (4) If the maximum power of an engine generating credits under the 
Tier 2 standards in 40 CFR part 89 is at or above 37 kW and below 75 
kW, you may use those credits for certifying engines under the Option 
1 standards in Sec.  1039.102.
* * * * *
    146. Section 1039.801 is amended by revising the definitions for 
Aftertreatment, Brake power, Constant-speed operation, Exempted, Good 
engineering judgment, Marine engine, Marine vessel, Motor vehicle, 
Revoke, Suspend, United States, and Void and adding a definition for 
Amphibious vehicle to read as follows:


Sec.  1039.801  What definitions apply to this part?

* * * * *
    Aftertreatment means relating to a catalytic converter, particulate 
filter, or any other system, component, or technology mounted 
downstream of the exhaust valve (or exhaust port) whose design function 
is to decrease emissions in the engine exhaust before it is exhausted 
to the environment. Exhaust-gas recirculation (EGR) and turbochargers 
are not aftertreatment.
* * * * *
    Amphibious vehicle means a vehicle with wheels or tracks that is 
designed primarily for operation on land and secondarily for operation 
in water.
* * * * *
    Brake power means the usable power output of the engine, not 
including power required to fuel, lubricate, or heat the engine, 
circulate coolant to the engine, or to operate aftertreatment devices.
* * * * *
    Constant-speed operation means engine operation with a governor 
that controls the operator input to maintain an engine at a reference 
speed, even under changing load. For example, an isochronous governor 
changes reference speed temporarily during a load change, then returns 
the engine to its original reference speed after the engine stabilizes. 
Isochronous governors typically allow speed changes up to 1.0%. Another 
example is a speed-droop governor, which has a fixed reference speed at 
zero load and allows the reference speed to decrease as load increases. 
With speed-droop governors, speed typically decreases (3 to 10)% below 
the reference speed at zero load, such that the minimum reference speed 
occurs near the engine's point of maximum power.
* * * * *
    Exempted has the meaning we give in 40 CFR 1068.30.
* * * * *
    Good engineering judgment has the meaning we give in 40 CFR 
1068.30. See 40 CFR 1068.5 for the administrative process we use to 
evaluate good engineering judgment.
* * * * *
    Marine engine means a nonroad engine that is installed or intended 
to be installed on a marine vessel. This includes a portable auxiliary 
marine engine only if its fueling, cooling, or exhaust system is an 
integral part of the vessel. There are two kinds of marine engines:
    (1) Propulsion marine engine means a marine engine that moves a 
vessel through the water or directs the vessel's movement.
    (2) Auxiliary marine engine means a marine engine not used for 
propulsion.
    Marine vessel has the meaning given in 1 U.S.C. 3, except that it 
does not include amphibious vehicles. The definition in 1 U.S.C. 3 very 
broadly includes every craft capable of being used as a means of 
transportation on water.
* * * * *
    Motor vehicle has the meaning we give in 40 CFR 85.1703(a). In 
general, motor vehicle means any vehicle that EPA deems to be capable 
of safe and practical use on streets or highways that has a maximum 
ground speed above 40 kilometers per hour (25 miles per hour) over 
level, paved surfaces.
* * * * *
    Revoke has the meaning we give in 40 CFR 1068.30.
* * * * *
    Suspend has the meaning we give in 40 CFR 1068.30.
* * * * *
    United States has the meaning we give in 40 CFR 1068.30.
* * * * *
    Void has the meaning we give in 40 CFR 1068.30.
* * * * *

PART 1048--CONTROL OF EMISSIONS FROM NEW, LARGE NONROAD SPARK-
IGNITION ENGINES

    147. The authority citation for part 1048 is revised to read as 
follows:

    Authority: 42 U.S.C. 7401--7671q.

    148. The heading for subpart A is revised to read as follows:

Subpart A--Overview and Applicability

    149. Section 1048.1 is revised to read as follows:


Sec.  1048.1  Does this part apply to me?

    (a) The regulations in this part 1048 apply for all new, spark-
ignition nonroad engines (defined in Sec.  1048.801) with maximum 
engine power above 19 kW, except as provided in Sec.  1048.5.
    (b) This part 1048 applies for engines built on or after January 1, 
2004. You need not follow this part for engines you produce before 
January 1, 2004. See Sec. Sec.  1048.101 through 1048.115, Sec.  
1048.145, and the definition of model year in Sec.  1048.801 for more 
information about the timing of new requirements.
    (c) The definition of nonroad engine in 40 CFR 1068.30 excludes 
certain engines used in stationary applications. These engines are not 
required to comply with this part, except for the requirements in Sec.  
1048.20. In addition, if these engines are uncertified, the 
prohibitions in 40 CFR 1068.101 restrict their use as nonroad engines.
    (d) In certain cases, the regulations in this part 1048 apply to 
engines with maximum engine power at or below 19 kW that would 
otherwise be covered by 40 CFR part 90. See 40 CFR 90.913 for 
provisions related to this allowance.
    150. Section 1048.5 is revised to read as follows:


Sec.  1048.5  Which engines are excluded from this part's requirements?

    This part does not apply to the following nonroad engines:
    (a) Engines that are certified to meet the requirements of 40 CFR 
part 1051, or are otherwise subject to 40 CFR part 1051 (for example, 
engines used in snowmobiles and all-terrain vehicles).
    (b) Propulsion marine engines. See 40 CFR part 91. This part 
applies with respect to auxiliary marine engines.

[[Page 54888]]

    151. Section 1048.10 is revised to read as follows:


Sec.  1048.10  How is this part organized?

    The regulations in this part 1048 contain provisions that affect 
both engine manufacturers and others. However, the requirements of this 
part are generally addressed to the engine manufacturer. The term 
``you'' generally means the engine manufacturer, as defined in Sec.  
1048.801. This part 1048 is divided into the following subparts:
    (a) Subpart A of this part defines the applicability of part 1048 
and gives an overview of regulatory requirements.
    (b) Subpart B of this part describes the emission standards and 
other requirements that must be met to certify engines under this part. 
Note that Sec.  1048.145 discusses certain interim requirements and 
compliance provisions that apply only for a limited time.
    (c) Subpart C of this part describes how to apply for a certificate 
of conformity.
    (d) Subpart D of this part describes general provisions for testing 
production-line engines.
    (e) Subpart E of this part describes general provisions for testing 
in-use engines.
    (f) Subpart F of this part describes how to test your engines 
(including references to other parts of the Code of Federal 
Regulations).
    (g) Subpart G of this part and 40 CFR part 1068 describe 
requirements, prohibitions, and other provisions that apply to engine 
manufacturers, equipment manufacturers, owners, operators, rebuilders, 
and all others.
    (h) [Reserved]
    (i) Subpart I of this part contains definitions and other reference 
information.
    152. Section 1048.15 is revised to read as follows:


Sec.  1048.15  Do any other regulation parts affect me?

    (a) Part 1065 of this chapter describes procedures and equipment 
specifications for testing engines. Subpart F of this part 1048 
describes how to apply the provisions of part 1065 of this chapter to 
determine whether engines meet the emission standards in this part.
    (b) The requirements and prohibitions of part 1068 of this chapter 
apply to everyone, including anyone who manufactures, imports, 
installs, owns, operates, or rebuilds any of the engines subject to 
this part 1048, or equipment containing these engines. Part 1068 of 
this chapter describes general provisions, including these seven areas:
    (1) Prohibited acts and penalties for engine manufacturers, 
equipment manufacturers, and others.
    (2) Rebuilding and other aftermarket changes.
    (3) Exclusions and exemptions for certain engines.
    (4) Importing engines.
    (5) Selective enforcement audits of your production.
    (6) Defect reporting and recall.
    (7) Procedures for hearings.
    (c) Other parts of this chapter apply if referenced in this part.
    153. Section 1048.20 is revised to read as follows:


Sec.  1048.20  What requirements from this part apply to excluded 
stationary engines?

    (a) You must add a permanent label or tag to each new engine you 
produce or import that is excluded under Sec.  1048.1(c) as a 
stationary engine. To meet labeling requirements, you must do the 
following things:
    (1) Attach the label or tag in one piece so no one can remove it 
without destroying or defacing it.
    (2) Secure it to a part of the engine needed for normal operation 
and not normally requiring replacement.
    (3) Make sure it is durable and readable for the engine's entire 
life.
    (4) Write it in English.
    (5) Follow the requirements in Sec.  1048.135(g) regarding 
duplicate labels if the engine label is obscured in the final 
installation.
    (b) Engine labels or tags required under this section must have the 
following information:
    (1) Include the heading ``EMISSION CONTROL INFORMATION''.
    (2) Include your full corporate name and trademark. You may instead 
include the full corporate name and trademark of another company you 
choose to designate.
    (3) State the engine displacement (in liters) and maximum engine 
power.
    (4) State: ``THIS ENGINE IS EXCLUDED FROM THE REQUIREMENTS OF 40 
CFR PART 1048 AS A ``STATIONARY ENGINE.'' INSTALLING OR USING THIS 
ENGINE IN ANY OTHER APPLICATION MAY BE A VIOLATION OF FEDERAL LAW 
SUBJECT TO CIVIL PENALTY.''.
    154. Section 1048.101 is amended by revising the introductory text 
and paragraphs (a), (b), (c), (e), (g), and (h) to read as follows:


Sec.  1048.101  What exhaust emission standards must my engines meet?

    The exhaust emission standards of this section apply by model year. 
You may certify engines earlier than we require. The Tier 1 standards 
apply only to steady-state testing, as described in paragraph (b) of 
this section. The Tier 2 standards apply to steady-state, transient, 
and field testing, as described in paragraphs (a), (b), and (c) of this 
section.
    (a) Emission standards for transient testing. Starting in the 2007 
model year, transient exhaust emissions from your engines may not 
exceed the Tier 2 emission standards, as follows:
    (1) Measure emissions using the applicable transient test 
procedures described in subpart F of this part.
    (2) The Tier 2 HC+NOX standard is 2.7 g/kW-hr and the 
Tier 2 CO standard is 4.4 g/kW-hr. For severe-duty engines, the Tier 2 
HC+NOX standard is 2.7 g/kW-hr and the Tier 2 CO standard is 
130.0 g/kW-hr. High-load engines and engines with maximum engine power 
above 560 kW are not subject to the transient standards in this 
paragraph (a).
    (3) You may optionally certify your engines according to the 
following formula instead of the standards in paragraph (a)(1) of this 
section: (HC+NOX) x CO0.784 <= 8.57. The 
HC+NOX and CO emission levels you select to satisfy this 
formula, rounded to the nearest 0.1 g/kW-hr, become the emission 
standards that apply for those engines. You may not select an 
HC+NOX emission standard higher than 2.7 g/kW-hr or a CO 
emission standard higher than 20.6 g/kW-hr. The following table 
illustrates a range of possible values under this paragraph (a)(3):

   Table 1 of Sec.   1048.101.--Examples of Possible Tier 2 Duty-cycle
                           Emission Standards
------------------------------------------------------------------------
         HC+NOX  (g/kW-hr)                      CO  (g/kW-hr)
------------------------------------------------------------------------
                    2.7                                  4.4
                    2.2                                  5.6
                    1.7                                  7.9
                    1.3                                 11.1
                    1.0                                 15.5
                    0.8                                 20.6
------------------------------------------------------------------------

    (b) Standards for steady-state testing. Except as we allow in 
paragraph (d) of this section, steady-state exhaust emissions from your 
engines may not exceed emission standards, as follows:
    (1) Measure emissions using the applicable steady-state test 
procedures described in subpart F of this part:
    (2) The following table shows the Tier 1 exhaust emission standards 
that apply to engines from 2004 through 2006 model years:

[[Page 54889]]



                        Table 2 of Sec.   1048.101.--Tier 1 Emission Standards (g/kW-hr)
----------------------------------------------------------------------------------------------------------------
                                                                     General emission       Alternate emission
                                                                         standards         standards for severe-
                             Testing                             ------------------------      duty engines
                                                                                         -----------------------
                                                                    HC+NOX        CO        HC+NOX        CO
----------------------------------------------------------------------------------------------------------------
Certification and production-line testing.......................         4.0        50.0         4.0       130.0
In-use testing..................................................         5.4        50.0         5.4       130.0
----------------------------------------------------------------------------------------------------------------

    (3) Starting in the 2007 model year, steady-state exhaust emissions 
from your engines may not exceed the numerical emission standards in 
paragraph (a) of this section. See paragraph (d) of this section for 
alternate standards that apply for certain engines.
    (c) Standards for field testing. Starting in 2007, exhaust 
emissions may not exceed field-testing standards, as follows:
    (1) Measure emissions using the field-testing procedures in subpart 
F of this part.
    (2) The HC+NOX standard is 3.8 g/kW-hr and the CO 
standard is 6.5 g/kW-hr. For severe-duty engines, the HC+NOX 
standard is 3.8 g/kW-hr and the CO standard is 200.0 g/kW-hr. For 
natural gas-fueled engines, you are not required to measure nonmethane 
hydrocarbon emissions or total hydrocarbon emissions for testing to 
show that the engine meets the emission standards of this paragraph 
(c); that is, you may assume HC emissions are equal to zero.
    (3) You may apply the following formula to determine alternate 
emission standards that apply to your engines instead of the standards 
in paragraph (c)(1) of this section: (HC+NOX) x CO\0.791\ <= 
16.78. HC+NOX emission levels may not exceed 3.8 g/kW-hr and 
CO emission levels may not exceed 31.0 g/kW-hr. The following table 
illustrates a range of possible values under this paragraph (c)(2):

 Table 3 of Sec.   1048.101.--Examples of Possible Tier 2 Field-testing
                           Emission Standards
------------------------------------------------------------------------
         HC+NOX  (g/kW-hr)                      CO  (g/kW-hr)
------------------------------------------------------------------------
                    3.8                                  6.5
                    3.1                                  8.5
                    2.4                                 11.7
                    1.8                                 16.8
                    1.4                                 23.1
                    1.1                                 31.0
------------------------------------------------------------------------

* * * * *
    (e) Fuel types. The exhaust emission standards in this section 
apply for engines using each type of fuel specified in 40 CFR part 
1065, subpart C, on which the engines in the engine family are designed 
to operate, except for engines certified under Sec.  1048.625. For 
engines certified under Sec.  1048.625, the standards of this section 
apply to emissions measured using the specified test fuel. You must 
meet the numerical emission standards for hydrocarbons in this section 
based on the following types of hydrocarbon emissions for engines 
powered by the following fuels:
    (1) Gasoline- and LPG-fueled engines: THC emissions.
    (2) Natural gas-fueled engines: NMHC emissions.
    (3) Alcohol-fueled engines: THCE emissions.
* * * * *
    (g) Useful life. Your engines must meet the exhaust emission 
standards in paragraphs (a) through (c) of this section over their full 
useful life. The minimum useful life is 5,000 hours of operation or 
seven years, whichever comes first.
    (1) Specify a longer useful life in hours for an engine family 
under either of two conditions:
    (i) If you design, advertise, or market your engine to operate 
longer than the minimum useful life (your recommended hours until 
rebuild may indicate a longer design life).
    (ii) If your basic mechanical warranty is longer than the minimum 
useful life.
    (2) You may request in your application for certification that we 
approve a shorter useful life for an engine family. We may approve a 
shorter useful life, in hours of engine operation but not in years, if 
we determine that these engines will rarely operate longer than the 
shorter useful life. If engines identical to those in the engine family 
have already been produced and are in use, your demonstration must 
include documentation from such in-use engines. In other cases, your 
demonstration must include an engineering analysis of information 
equivalent to such in-use data, such as data from research engines or 
similar engine models that are already in production. Your 
demonstration must also include any overhaul interval that you 
recommend, any mechanical warranty that you offer for the engine or its 
components, and any relevant customer design specifications. Your 
demonstration may include any other relevant information. The useful 
life value may not be shorter than any of the following:
    (i) 1,000 hours of operation.
    (ii) Your recommended overhaul interval.
    (iii) Your mechanical warranty for the engine.
    (h) Applicability for testing. The emission standards in this 
subpart apply to all testing, including certification, production-line, 
and in-use testing. For production-line testing, you must perform duty-
cycle testing as specified in Sec. Sec.  1048.505 and 1048.510. The 
field-testing standards of this section apply for those tests. You need 
not do additional testing of production-line engines to show that your 
engines meet the field-testing standards.
    155. Section 1048.105 is amended by revising the section heading 
and adding introductory text to read as follows:


Sec.  1048.105  What evaporative emission standards and requirements 
apply?

    The requirements of this section apply to all engines that are 
subject to this part, except auxiliary marine engines.
* * * * *
    156. Section 1048.115 is amended by revising the introductory text 
and paragraphs (a), (e), and (g) to read as follows:


Sec.  1048.115  What other requirements must my engines meet?

    Engines subject to this part must meet the following requirements:
    (a) Crankcase emissions. Crankcase emissions may not be discharged 
directly into the ambient atmosphere from any engine, except as 
follows:
    (1) Engines may discharge crankcase emissions to the ambient 
atmosphere if the emissions are added to the exhaust emissions (either 
physically or mathematically) during all emission testing.
    (2) If you take advantage of this exception, you must do the 
following things:

[[Page 54890]]

    (i) Manufacture the engines so that all crankcase emissions can be 
routed into the applicable sampling systems specified in 40 CFR part 
1065.
    (ii) Account for deterioration in crankcase emissions when 
determining exhaust deterioration factors.
    (3) For purposes of this paragraph (a), crankcase emissions that 
are routed to the exhaust upstream of exhaust aftertreatment during all 
operation are not considered to be discharged directly into the ambient 
atmosphere.
* * * * *
    (e) Adjustable parameters. Engines that have adjustable parameters 
must meet all the requirements of this part for any adjustment in the 
physically adjustable range. An operating parameter is not considered 
adjustable if you permanently seal it or if it is not normally 
accessible using ordinary tools. We may require that you set adjustable 
parameters to any specification within the adjustable range during any 
testing, including certification testing, selective enforcement 
auditing, or in-use testing.
* * * * *
    (g) Defeat devices. You may not equip your engines with a defeat 
device. A defeat device is an auxiliary emission-control device that 
reduces the effectiveness of emission controls under conditions that 
the engine may reasonably be expected to encounter during normal 
operation and use. This does not apply to auxiliary-emission control 
devices you identify in your certification application if any of the 
following is true:
    (1) The conditions of concern were substantially included in the 
applicable test procedures described in subpart F of this part.
    (2) You show your design is necessary to prevent engine (or 
equipment) damage or accidents.
    (3) The reduced effectiveness applies only to starting the engine.
    157. Section 1048.120 is revised to read as follows:


Sec.  1048.120  What emission-related warranty requirements apply to 
me?

    (a) General requirements. You must warrant to the ultimate 
purchaser and each subsequent purchaser that the new nonroad engine, 
including all parts of its emission-control system, meets two 
conditions:
    (1) It is designed, built, and equipped so it conforms at the time 
of sale to the ultimate purchaser with the requirements of this part.
    (2) It is free from defects in materials and workmanship that may 
keep it from meeting these requirements.
    (b) Warranty period. Your emission-related warranty must be valid 
for at least 50 percent of the engine's useful life in hours of 
operation or at least three years, whichever comes first. In the case 
of a high-cost warranted part, the warranty must be valid for at least 
70 percent of the engine's useful life in hours of operation or at 
least five years, whichever comes first. You may offer an emission-
related warranty more generous than we require. The emission-related 
warranty for the engine may not be shorter than any published warranty 
you offer without charge for the engine. Similarly, the emission-
related warranty for any component may not be shorter than any 
published warranty you offer without charge for that component. If you 
provide an extended warranty to individual owners for any components 
covered in paragraph (c) of this section for an additional charge, your 
emission-related warranty must cover those components for those owners 
to the same degree. If an engine has no hour meter, we base the 
warranty periods in this paragraph (b) only on the engine's age (in 
years). The warranty period begins when the engine is placed into 
service.
    (c) Components covered. The emission-related warranty covers all 
components whose failure would increase an engine's emissions of any 
pollutant. This includes components listed in 40 CFR part 1068, 
Appendix I, and components from any other system you develop to control 
emissions. The emission-related warranty covers these components even 
if another company produces the component. Your emission-related 
warranty does not cover components whose failure would not increase an 
engine's emissions of any pollutant.
    (d) Limited applicability. You may deny warranty claims under this 
section if the operator caused the problem through improper maintenance 
or use, as described in 40 CFR 1068.115.
    (e) Owners manual. Describe in the owners manual the emission-
related warranty provisions from this section that apply to the engine.
    158. Section 1048.125 is revised to read as follows:


Sec.  1048.125  What maintenance instructions must I give to buyers?

    Give the ultimate purchaser of each new nonroad engine written 
instructions for properly maintaining and using the engine, including 
the emission-control system. The maintenance instructions also apply to 
service accumulation on your emission-data engines, as described in 40 
CFR part 1065.
    (a) Critical emission-related maintenance. Critical emission-
related maintenance includes any adjustment, cleaning, repair, or 
replacement of critical emission-related components. This may also 
include additional emission-related maintenance that you determine is 
critical if we approve it in advance. You may schedule critical 
emission-related maintenance on these components if you meet the 
following conditions:
    (1) You demonstrate that the maintenance is reasonably likely to be 
done at the recommended intervals on in-use engines. We will accept 
scheduled maintenance as reasonably likely to occur if you satisfy any 
of the following conditions:
    (i) You present data showing that, if a lack of maintenance 
increases emissions, it also unacceptably degrades the engine's 
performance.
    (ii) You present survey data showing that at least 80 percent of 
engines in the field get the maintenance you specify at the recommended 
intervals.
    (iii) You provide the maintenance free of charge and clearly say so 
in maintenance instructions for the customer.
    (iv) You otherwise show us that the maintenance is reasonably 
likely to be done at the recommended intervals.
    (2) You may not schedule critical emission-related maintenance more 
frequently than the following minimum intervals, except as specified in 
paragraphs (a)(3), (b) and (c) of this section:
    (i) For catalysts, fuel injectors, electronic control units, 
superchargers, and turbochargers: the useful life of the engine family.
    (ii) For gaseous fuel-system components (cleaning without 
disassembly only) and oxygen sensors: 2,500 hours.
    (3) If your engine family has an alternate useful life under Sec.  
1048.101(g) that is shorter than the period specified in paragraph 
(a)(2)(ii) of this section, you may not schedule critical emission-
related maintenance more frequently than the alternate useful life, 
except as specified in paragraph (c) of this section.
    (b) Recommended additional maintenance. You may recommend any 
additional amount of maintenance on the components listed in paragraph 
(a) of this section, as long as you state clearly that these 
maintenance steps are not necessary to keep the emission-related 
warranty valid. If operators do the maintenance specified in paragraph 
(a) of this section, but not the recommended additional maintenance, 
this does not allow you to disqualify

[[Page 54891]]

those engines from in-use testing or deny a warranty claim. Do not take 
these maintenance steps during service accumulation on your emission-
data engines.
    (c) Special maintenance. You may specify more frequent maintenance 
to address problems related to special situations, such as substandard 
fuel or atypical engine operation. For example, you may specify more 
frequent cleaning of fuel system components for engines you have reason 
to believe will be using fuel that causes substantially more engine 
performance problems than commercial fuels of the same type that are 
generally available across the United States. You must clearly state 
that this additional maintenance is associated with the special 
situation you are addressing.
    (d) Noncritical emission-related maintenance. You may schedule any 
amount of emission-related inspection or maintenance that is not 
covered by paragraph (a) of this section, as long as you state in the 
owners manual that these steps are not necessary to keep the emission-
related warranty valid. If operators fail to do this maintenance, this 
does not allow you to disqualify those engines from in-use testing or 
deny a warranty claim. Do not take these inspection or maintenance 
steps during service accumulation on your emission-data engines.
    (e) Maintenance that is not emission-related. For maintenance 
unrelated to emission controls, you may schedule any amount of 
inspection or maintenance. You may also take these inspection or 
maintenance steps during service accumulation on your emission-data 
engines, as long as they are reasonable and technologically necessary. 
This might include adding engine oil, changing air, fuel, or oil 
filters, servicing engine-cooling systems, and adjusting idle speed, 
governor, engine bolt torque, valve lash, or injector lash. You may 
perform this nonemission-related maintenance on emission-data engines 
at the least frequent intervals that you recommend to the ultimate 
purchaser (but not the intervals recommended for severe service).
    (f) Source of parts and repairs. State clearly on the first page of 
your written maintenance instructions that a repair shop or person of 
the owner's choosing may maintain, replace, or repair emission-control 
devices and systems. Your instructions may not require components or 
service identified by brand, trade, or corporate name. Also, do not 
directly or indirectly condition your warranty on a requirement that 
the equipment be serviced by your franchised dealers or any other 
service establishments with which you have a commercial relationship. 
You may disregard the requirements in this paragraph (f) if you do one 
of two things:
    (1) Provide a component or service without charge under the 
purchase agreement.
    (2) Get us to waive this prohibition in the public's interest by 
convincing us the engine will work properly only with the identified 
component or service.
    (g) Payment for scheduled maintenance. Owners are responsible for 
properly maintaining their engines. This generally includes paying for 
scheduled maintenance. However, manufacturers must pay for scheduled 
maintenance during the useful life if it meets all the following 
criteria:
    (1) Each affected component was not in general use on similar 
engines before January 1, 2004.
    (2) The primary function of each affected component is to reduce 
emissions.
    (3) The cost of the scheduled maintenance is more than 2 percent of 
the price of the engine.
    (4) Failure to perform the maintenance would not cause clear 
problems that would significantly degrade the engine's performance.
    (h) Owners manual. Explain the owner's responsibility for proper 
maintenance in the owners manual.
    159. Section 1048.130 is amended by revising paragraphs (a), 
(b)(3), (b)(7), and (b)(8); and by adding paragraph (d) to read as 
follows:


Sec.  1048.130  What installation instructions must I give to equipment 
manufacturers?

    (a) If you sell an engine for someone else to install in a piece of 
nonroad equipment, give the engine installer instructions for 
installing it consistent with the requirements of this part. Include 
all information necessary to ensure that an engine will be installed in 
its certified configuration.
    (b)* * *
    (3) Describe the instructions needed to properly install the 
exhaust system and any other components. Include instructions 
consistent with the requirements of Sec.  1048.205(v).
* * * * *
    (7) Describe any other instructions to make sure the installed 
engine will operate according to design specifications in your 
application for certification. This may include, for example, 
instructions for installing aftertreatment devices when installing the 
engines.
    (8) State: ``If you install the engine in a way that makes the 
engine's emission control information label hard to read during normal 
engine maintenance, you must place a duplicate label on the equipment, 
as described in 40 CFR 1068.105.''.
* * * * *
    (d) Provide instructions in writing or in an equivalent format. For 
example, you may post instructions on a publicly available website for 
downloading or printing. If you do not provide the instructions in 
writing, explain in your application for certification how you will 
ensure that each installer is informed of the installation 
requirements.
    160. Section 1048.135 is revised to read as follows:


Sec.  1048.135  How must I label and identify the engines I produce?

    (a) Assign each engine a unique identification number and 
permanently affix, engrave, or stamp it on the engine in a legible way.
    (b) At the time of manufacture, affix a permanent and legible label 
identifying each engine. The label must be--
    (1) Attached in one piece so it is not removable without being 
destroyed or defaced.
    (2) Secured to a part of the engine needed for normal operation and 
not normally requiring replacement.
    (3) Durable and readable for the engine's entire life.
    (4) Written in English.
    (c) The label must--
    (1) Include the heading ``EMISSION CONTROL INFORMATION''.
    (2) Include your full corporate name and trademark. You may 
identify another company and use its trademark instead of yours if you 
comply with the provisions of Sec.  1048.635.
    (3) Include EPA's standardized designation for the engine family 
(and subfamily, where applicable).
    (4) State the engine's displacement (in liters); however, you may 
omit this from the label if all the engines in the engine family have 
the same per-cylinder displacement and total displacement.
    (5) State the date of manufacture [MONTH and YEAR]. You may omit 
this from the label if you keep a record of the engine-manufacture 
dates and provide it to us upon request.
    (6) Identify the emission-control system. Use terms and 
abbreviations consistent with SAE J1930 (incorporated by reference in 
Sec.  1048.810). You may omit this information from the label if there 
is not enough room for it and you put it in the owners manual instead.
    (7) State: ``THIS ENGINE IS CERTIFIED TO OPERATE ON [specify 
operating fuel or fuels].''.

[[Page 54892]]

    (8) Identify any requirements for fuel and lubricants. You may omit 
this information from the label if there is not enough room for it and 
you put it in the owners manual instead.
    (9) List specifications and adjustments for engine tuneups; show 
the proper position for the transmission during tuneup and state which 
accessories should be operating. You may omit this information from the 
label if there is not enough room for it and you put it in the owners 
manual instead.
    (10) State the useful life for your engine family if it has a 
longer useful life under Sec.  1048.101(g)(1) or a shortened useful 
life under Sec.  1048.101(g)(2).
    (11) Identify the emission standards to which you have certified 
the engine.
    (12) State: ``THIS ENGINE COMPLIES WITH U.S. EPA REGULATIONS FOR 
[MODEL YEAR] LARGE NONROAD SI ENGINES.''.
    (13) If your engines are certified only for constant-speed 
operation, state: ``USE IN CONSTANT-SPEED APPLICATIONS ONLY'.
    (14) If your engines are certified only for variable-speed 
operation, state: ``USE IN VARIABLE-SPEED APPLICATIONS ONLY'.
    (15) If your engines are certified only for high-load engines, 
state: ``THIS ENGINE IS NOT INTENDED FOR OPERATION AT LESS THAN 75 
PERCENT OF FULL LOAD.''.
    (16) If you certify your engines under Sec.  1048.101(d) (and show 
in your application for certification that in-use engines will 
experience infrequent high-load operation), state: ``THIS ENGINE IS NOT 
INTENDED FOR OPERATION AT MORE THAN PERCENT OF FULL LOAD.''. Specify 
the appropriate percentage of full load based on the nature of the 
engine protection. You may add other statements to discourage operation 
in engine-protection modes.
    (17) If your engines are certified to the voluntary standards in 
Sec.  1048.140, state: ``BLUE SKY SERIES'.
    (d) You may add information to the emission control information 
label to identify other emission standards that the engine meets or 
does not meet (such as California standards). You may also add other 
information to ensure that the engine will be properly maintained and 
used.
    (e) You may ask us to approve modified labeling requirements in 
this part 1048 if you show that it is necessary or appropriate. We will 
approve your request if your alternate label is consistent with the 
requirements of this part.
    (f) If you obscure the engine label while installing the engine in 
the equipment, you must place a duplicate label on the equipment. If 
others install your engine in their equipment in a way that obscures 
the engine label, we require them to add a duplicate label on the 
equipment (see 40 CFR 1068.105); in that case, give them the number of 
duplicate labels they request and keep the following records for at 
least five years:
    (1) Written documentation of the request from the equipment 
manufacturer.
    (2) The number of duplicate labels you send and the date you sent 
them.
    161. Section 1048.140 is amended by revising paragraph (c) to read 
as follows:


Sec.  1048.140  What are the provisions for certifying Blue Sky Series 
engines?

* * * * *
    (c) For any model year, to receive a certificate of conformity as a 
``Blue Sky Series'' engine family must meet all the requirements in 
this part while certifying to one of the sets of exhaust emission 
standards in the following table:

              Table 1 of Sec.   1048.140--Long-term Standards for Blue Sky Series Engines (g/kW-hr)
----------------------------------------------------------------------------------------------------------------
                                                          Standards for steady-state    Standards
                                                              and transient test       for field-
                                                                  procedures             testing
                          Level                          ----------------------------  procedures        CO
                                                                                     --------------
                                                             HC+NOX          CO          NC+NOX
----------------------------------------------------------------------------------------------------------------
Blue Sky................................................          0.80           4.4          1.10           6.6
Advanced Blue Sky.......................................          0.30           3.0          0.42           4.5
Premium Blue Sky........................................          0.15           3.0          0.21           4.5
----------------------------------------------------------------------------------------------------------------

* * * * *
    162. Section 1048.145 is amended by revising the section heading 
and paragraph (a) and by removing and reserving paragraph (c) to read 
as follows:


Sec.  1048.145  Are there interim provisions that apply only for a 
limited time?

* * * * *
    (a) Family banking. This paragraph (a) allows you to reduce the 
number of engines subject to the Tier 2 standards by certifying some of 
your engines earlier than otherwise required, as follows:
    (1) For early-compliant engines to generate offsets under this 
paragraph (a), you must meet the following general provisions:
    (i) You must begin actual production of early-compliant engines by 
September 1, 2006.
    (ii) Engines you produce after December 31, 2006 may not generate 
offsets.
    (iii) Offset-generating engines must be certified to the Tier 2 
standards and requirements under this part 1048.
    (iv) If you certify engines under the voluntary standards of Sec.  
1048.140, you may not use them in your calculation under this paragraph 
(a).
    (2) For every offset-generating engine certified to the Tier 2 
standards, you may reduce the number of engines with the same maximum 
engine power that are required to meet the Tier 2 standards in later 
model years by one engine. You may calculate power-weighted offsets 
based on actual U.S.-directed sales volumes. For example, if you 
produce a total of 1,000 engines in 2005 and 2006 with an average 
maximum power of 60 kW certified to the Tier 2 standards, you may delay 
certification to that tier of standards for up to 60,000 kW-engine-
years in any of the following ways:
    (i) Delay certification of up to 600 engines with an average 
maximum power of 100 kW for one model year.
    (ii) Delay certification of up to 200 engines with an average 
maximum power of 100 kW for three consecutive model years.
    (iii) Delay certification of up to 400 engines with an average 
maximum power of 100 kW for one model year and up to 50 engines with an 
average maximum power of 200 kW for two model years.
    (3) Offset-using engines (that is, those not required to certify to 
the Tier 2 standards) must be certified to the Tier 1 standards and 
requirements of this part 1048. You may delay compliance for up to 
three model years.
    (4) By January 31 of each year in which you use the provisions of 
this

[[Page 54893]]

paragraph (a), send us a report describing how many offset-generating 
or offset-using engines you produced in the preceding model year.
* * * * *
    163. Section 1048.201 is revised to read as follows:


Sec.  1048.201  What are the general requirements for obtaining a 
certificate of conformity?

    (a) You must send us a separate application for a certificate of 
conformity for each engine family. A certificate of conformity is valid 
from the indicated effective date until December 31 of the model year 
for which it is issued.
    (b) The application must contain all the information required by 
this part and must not include false or incomplete statements or 
information (see Sec.  1048.255).
    (c) We may ask you to include less information than we specify in 
this subpart, as long as you maintain all the information required by 
Sec.  1048.250.
    (d) You must use good engineering judgment for all decisions 
related to your application (see 40 CFR 1068.5).
    (e) An authorized representative of your company must approve and 
sign the application.
    (f) See Sec.  1048.255 for provisions describing how we will 
process your application.
    (g) We may require you to deliver your test engines to a facility 
we designate for our testing (see Sec.  1048.235(c)).
    164. Section 1048.205 is revised to read as follows:


Sec.  1048.205  What must I include in my application?

    This section specifies the information that must be in your 
application, unless we ask you to include less information under Sec.  
1048.201(c). We may require you to provide additional information to 
evaluate your application.
    (a) Describe the engine family's specifications and other basic 
parameters of the engine's design and emission controls. List the fuel 
types on which your engines are designed to operate (for example, 
gasoline and natural gas). List each distinguishable engine 
configuration in the engine family.
    (b) Explain how the emission-control system operates. Describe in 
detail all system components for controlling exhaust emissions, 
including all auxiliary-emission control devices (AECDs) and all fuel-
system components you will install on any production or test engine. 
Describe the evaporative emission controls. Identify the part number of 
each component you describe. For this paragraph (b), treat as separate 
AECDs any devices that modulate or activate differently from each 
other. Include all the following:
    (1) Give a general overview of the engine, the emission-control 
strategies, and all AECDs.
    (2) Describe each AECD's general purpose and function.
    (3) Identify the parameters that each AECD senses (including 
measuring, estimating, calculating, or empirically deriving the 
values). Include equipment-based parameters and state whether you 
simulate them during testing with the applicable procedures.
    (4) Describe the purpose for sensing each parameter.
    (5) Identify the location of each sensor the AECD uses.
    (6) Identify the threshold values for the sensed parameters that 
activate the AECD.
    (7) Describe the parameters that the AECD modulates (controls) in 
response to any sensed parameters, including the range of modulation 
for each parameter, the relationship between the sensed parameters and 
the controlled parameters and how the modulation achieves the AECD's 
stated purpose. Use graphs and tables, as necessary.
    (8) Describe each AECD's specific calibration details. This may be 
in the form of data tables, graphical representations, or some other 
description.
    (9) Describe the hierarchy among the AECDs when multiple AECDs 
sense or modulate the same parameter. Describe whether the strategies 
interact in a comparative or additive manner and identify which AECD 
takes precedence in responding, if applicable.
    (10) Explain the extent to which the AECD is included in the 
applicable test procedures specified in subpart F of this part.
    (11) Do the following additional things for AECDs designed to 
protect engines or equipment:
    (i) Identify the engine and/or equipment design limits that make 
protection necessary and describe any damage that would occur without 
the AECD.
    (ii) Describe how each sensed parameter relates to the protected 
components' design limits or those operating conditions that cause the 
need for protection.
    (iii) Describe the relationship between the design limits/
parameters being protected and the parameters sensed or calculated as 
surrogates for those design limits/parameters, if applicable.
    (iv) Describe how the modulation by the AECD prevents engines and/
or equipment from exceeding design limits.
    (v) Explain why it is necessary to estimate any parameters instead 
of measuring them directly and describe how the AECD calculates the 
estimated value, if applicable.
    (vi) Describe how you calibrate the AECD modulation to activate 
only during conditions related to the stated need to protect components 
and only as needed to sufficiently protect those components in a way 
that minimizes the emission impact.
    (c) Explain how the engine diagnostic system works, describing 
especially the engine conditions (with the corresponding diagnostic 
trouble codes) that cause the malfunction-indicator light to go on. 
Propose what you consider to be extreme conditions under which the 
diagnostic system should disregard trouble codes, as described in Sec.  
1048.110.
    (d) Describe the engines you selected for testing and the reasons 
for selecting them.
    (e) Describe the test equipment and procedures that you used, 
including any special or alternate test procedures you used (see Sec.  
1048.501).
    (f) Describe how you operated the emission-data engine before 
testing, including the duty cycle and the number of engine operating 
hours used to stabilize emission levels. Explain why you selected the 
method of service accumulation. Describe any scheduled maintenance you 
did.
    (g) List the specifications of each test fuel to show that it falls 
within the required ranges we specify in 40 CFR part 1065, subpart H.
    (h) Identify the engine family's useful life.
    (i) Include the maintenance instructions you will give to the 
ultimate purchaser of each new nonroad engine (see Sec.  1048.125).
    (j) Include the emission-related installation instructions you will 
provide if someone else installs your engines in a piece of nonroad 
equipment (see Sec.  1048.130).
    (k) Identify each high-cost warranted part and show us how you 
calculated its replacement cost, including the estimated retail cost of 
the part, labor rates, and labor hours to diagnose and replace 
defective parts.
    (l) Describe your emission control information label (see Sec.  
1048.135).
    (m) Identify the emission standards to which you are certifying 
engines in the engine family.
    (n) Identify the engine family's deterioration factors and describe 
how you developed them (see Sec.  1048.245).

[[Page 54894]]

Present any emission test data you used for this.
    (o) State that you operated your emission-data engines as described 
in the application (including the test procedures, test parameters, and 
test fuels) to show you meet the requirements of this part.
    (p) Present emission data to show that you meet emission standards, 
as follows:
    (1) Present exhaust emission data for HC, NOX, and CO on 
an emission-data engine to show your engines meet the applicable duty-
cycle emission standards we specify in Sec.  1048.101. Show emission 
figures before and after applying adjustment factors for deterioration 
factors for each engine. Include test data for each type of fuel from 
40 CFR part 1065, subpart H, on which you intend for engines in the 
engine family to operate (for example, gasoline, liquefied petroleum 
gas, methanol, or natural gas). If we specify more than one grade of 
any fuel type (for example, a summer grade and winter grade of 
gasoline), you only need to submit test data for one grade, unless the 
regulations of this part specify otherwise for your engine. Note that 
Sec.  1048.235 allows you to submit an application in certain cases 
without new emission data.
    (2) If your engine family includes a volatile liquid fuel (and you 
do not use design-based certification under Sec.  1048.245), present 
evaporative test data to show your vehicles meet the evaporative 
emission standards we specify in subpart B of this part. Show these 
figures before and after applying deterioration factors, where 
applicable.
    (q) State that all the engines in the engine family comply with the 
field-testing emission standards we specify in Sec.  1048.104 for all 
normal operation and use when tested as specified in Sec.  1048.515. 
Describe any relevant testing, engineering analysis, or other 
information in sufficient detail to support your statement.
    (r) For engines with maximum engine power above 560 kW, include 
information showing how your emission controls will function during 
normal in-use transient operation. For example, this might include the 
following:
    (1) Emission data from transient testing of engines using 
measurement systems designed for measuring in-use emissions.
    (2) Comparison of the engine design for controlling transient 
emissions with that from engines for which you have emission data over 
the transient duty cycle for certification.
    (3) Detailed descriptions of control algorithms and other design 
parameters for controlling transient emissions.
    (s) Report all test results, including those from invalid tests or 
from any other tests, whether or not they were conducted according to 
the test procedures of subpart F of this part. If you measure 
CO2, report those emission levels. We may ask you to send 
other information to confirm that your tests were valid under the 
requirements of this part and 40 CFR part 1065.
    (t) Describe all adjustable operating parameters (see Sec.  
1048.115(e)), including production tolerances. Include the following in 
your description of each parameter:
    (1) The nominal or recommended setting.
    (2) The intended physically adjustable range.
    (3) The limits or stops used to establish adjustable ranges.
    (4) Information showing why the limits, stops, or other means of 
inhibiting adjustment are effective in preventing adjustment of 
parameters on in-use engines to settings outside your intended 
physically adjustable ranges.
    (u) Provide the information to read, record, and interpret all the 
information broadcast by an engine's onboard computers and electronic 
control units. State that, upon request, you will give us any hardware, 
software, or tools we would need to do this. If you broadcast a 
surrogate parameter for torque values, you must provide us what we need 
to convert these into torque units. You may reference any appropriate 
publicly released standards that define conventions for these messages 
and parameters. Format your information consistent with publicly 
released standards.
    (v) Confirm that your emission-related installation instructions 
specify how to ensure that sampling of exhaust emissions will be 
possible after engines are installed in equipment and placed in 
service. If this cannot be done by simply adding a 20-centimeter 
extension to the exhaust pipe, show how to sample exhaust emissions in 
a way that prevents diluting the exhaust sample with ambient air.
    (w) State whether your engine will operate in variable-speed 
applications, constant-speed applications, or both. If your 
certification covers only constant-speed or only variable-speed 
applications, describe how you will prevent use of these engines in 
applications for which they are not certified.
    (x) Unconditionally certify that all the engines in the engine 
family comply with the requirements of this part, other referenced 
parts of the CFR, and the Clean Air Act.
    (y) Include estimates of U.S.-directed production volumes.
    (z) Include other applicable information, such as information 
specified in this part or part 1068 of this chapter related to requests 
for exemptions.
    165. Section 1048.210 is revised to read as follows:


Sec.  1048.210  May I get preliminary approval before I complete my 
application?

    If you send us information before you finish the application, we 
will review it and make any appropriate determinations, especially for 
questions related to engine family definitions, auxiliary emission-
control devices, deterioration factors, testing for service 
accumulation, and maintenance. Decisions made under this section are 
considered to be preliminary approval, subject to final review and 
approval. If you request preliminary approval related to the upcoming 
model year or the model year after that, we will make best-efforts to 
make the appropriate determinations as soon as practicable. We will 
generally not provide preliminary approval related to a future model 
year more than two years ahead of time.


1048.215  [Removed]

    166. Section 1048.215 is removed.
    167. Section 1048.220 is revised to read as follows:


Sec.  1048.220  How do I amend the maintenance instructions in my 
application?

    You may amend your emission-related maintenance instructions after 
you submit your application for certification, as long as the amended 
instructions remain consistent with the provisions of Sec.  1048.125. 
You must send the Designated Compliance Officer a request to amend your 
application for certification for an engine family if you want to 
change the emission-related maintenance instructions in a way that 
could affect emissions. In your request, describe the proposed changes 
to the maintenance instructions. We will disapprove your request if we 
determine that the amended instructions are inconsistent with 
maintenance you performed on emission-data engines.
    (a) If you are decreasing the specified maintenance, you may 
distribute the new maintenance instructions to your customers 30 days 
after we receive your request, unless we disapprove your request. We 
may approve a shorter time or waive this requirement.
    (b) If your requested change would not decrease the specified 
maintenance,


[[Continued on page 54895]]


From the Federal Register Online via GPO Access [wais.access.gpo.gov]
]                         
 
[[pp. 54895-54944]] Test Procedures for Testing Highway and Nonroad Engines and 
Omnibus Technical Amendments

[[Continued from page 54894]]

[[Page 54895]]

you may distribute the new maintenance instructions anytime after you 
send your request. For example, this paragraph (b) would cover adding 
instructions to increase the frequency of a maintenance step for 
engines in severe-duty applications.
    (c) You need not request approval if you are making only minor 
corrections (such as correcting typographical mistakes), clarifying 
your maintenance instructions, or changing instructions for maintenance 
unrelated to emission control.
    168. Section 1048.225 is revised to read as follows:


Sec.  1048.225  How do I amend my application for certification to 
include new or modified engines?

    Before we issue you a certificate of conformity, you may amend your 
application to include new or modified engine configurations, subject 
to the provisions of this section. After we have issued your 
certificate of conformity, you may send us an amended application 
requesting that we include new or modified engine configurations within 
the scope of the certificate, subject to the provisions of this 
section. You must amend your application if any changes occur with 
respect to any information included in your application.
    (a) You must amend your application before you take either of the 
following actions:
    (1) Add an engine (that is, an additional engine configuration) to 
an engine family. In this case, the engine added must be consistent 
with other engines in the engine family with respect to the criteria 
listed in Sec.  1048.230.
    (2) Change an engine already included in an engine family in a way 
that may affect emissions, or change any of the components you 
described in your application for certification. This includes 
production and design changes that may affect emissions any time during 
the engine's lifetime.
    (b) To amend your application for certification, send the 
Designated Compliance Officer the following information:
    (1) Describe in detail the addition or change in the engine model 
or configuration you intend to make.
    (2) Include engineering evaluations or data showing that the 
amended engine family complies with all applicable requirements. You 
may do this by showing that the original emission-data engine is still 
appropriate with respect to showing compliance of the amended family 
with all applicable requirements.
    (3) If the original emission-data engine for the engine family is 
not appropriate to show compliance for the new or modified nonroad 
engine, include new test data showing that the new or modified nonroad 
engine meets the requirements of this part.
    (c) We may ask for more test data or engineering evaluations. You 
must give us these within 30 days after we request them.
    (d) For engine families already covered by a certificate of 
conformity, we will determine whether the existing certificate of 
conformity covers your new or modified nonroad engine. You may ask for 
a hearing if we deny your request (see Sec.  1048.820).
    (e) For engine families already covered by a certificate of 
conformity, you may start producing the new or modified nonroad engine 
anytime after you send us your amended application, before we make a 
decision under paragraph (d) of this section. However, if we determine 
that the affected engines do not meet applicable requirements, we will 
notify you to cease production of the engines and may require you to 
recall the engines at no expense to the owner. Choosing to produce 
engines under this paragraph (e) is deemed to be consent to recall all 
engines that we determine do not meet applicable emission standards or 
other requirements and to remedy the nonconformity at no expense to the 
owner. If you do not provide information required under paragraph (c) 
of this section within 30 days, you must stop producing the new or 
modified nonroad engines.
    169. Section 1048.230 is revised to read as follows:


Sec.  1048.230  How do I select engine families?

    (a) Divide your product line into families of engines that are 
expected to have similar emission characteristics throughout the useful 
life. Your engine family is limited to a single model year.
    (b) Group engines in the same engine family if they are the same in 
all of the following aspects:
    (1) The combustion cycle.
    (2) The cooling system (water-cooled vs. air-cooled).
    (3) Configuration of the fuel system (for example, fuel injection 
vs. carburetion).
    (4) Method of air aspiration.
    (5) The number, location, volume, and composition of catalytic 
converters.
    (6) The number, arrangement, and approximate bore diameter of 
cylinders.
    (7) Evaporative emission controls.
    (c) You may subdivide a group of engines that is identical under 
paragraph (b) of this section into different engine families if you 
show the expected emission characteristics are different during the 
useful life.
    (d) You may group engines that are not identical with respect to 
the things listed in paragraph (b) of this section in the same engine 
family if you show that their emission characteristics during the 
useful life will be similar.
    (e) You may create separate families for exhaust emissions and 
evaporative emissions. If we do this, list both families on the 
emission control information label.
    (f) Where necessary, you may divide an engine family into sub-
families to meet different emission standards, as specified in Sec.  
1048.101(a)(2). For issues related to compliance and prohibited 
actions, we will generally apply decisions to the whole engine family. 
For engine labels and other administrative provisions, we may approve 
your request for separate treatment of sub-families.
    170. Section 1048.235 is revised to read as follows:


Sec.  1048.235  What emission testing must I perform for my application 
for a certificate of conformity?

    This section describes the emission testing you must perform to 
show compliance with the emission standards in Sec. Sec.  1048.101 (a) 
and (b) and 1048.105 during certification. See Sec.  1048.205(q) 
regarding emission testing related to the field-testing standards. See 
Sec.  1048.240 and 40 CFR part 1065, subpart E, regarding service 
accumulation before emission testing.
    (a) Test your emission-data engines using the procedures and 
equipment specified in subpart F of this part. For any testing related 
to evaporative emissions, use good engineering judgment to include a 
complete fuel system with the engine.
    (b) Select emission-data engines according to the following 
criteria:
    (1) Exhaust testing. For each fuel type from each engine family, 
select an emission-data engine with a configuration that is most likely 
to exceed the exhaust emission standards, using good engineering 
judgment. Consider the emission levels of all exhaust constituents over 
the full useful life of the engine when operated in a piece of 
equipment.
    (2) Evaporative testing. For each engine family that includes a 
volatile liquid fuel, select a test fuel system with a configuration 
that is most likely to exceed the evaporative emission standards, using 
good engineering judgment.

[[Page 54896]]

    (c) We may measure emissions from any of your test engines or other 
engines from the engine family, as follows:
    (1) We may decide to do the testing at your plant or any other 
facility. If we do this, you must deliver the test engine to a test 
facility we designate. The test engine you provide must include 
appropriate manifolds, aftertreatment devices, electronic control 
units, and other emission-related components not normally attached 
directly to the engine block. If we do the testing at your plant, you 
must schedule it as soon as possible and make available the 
instruments, personnel, and equipment we need.
    (2) If we measure emissions on one of your test engines, the 
results of that testing become the official emission results for the 
engine. Unless we later invalidate these data, we may decide not to 
consider your data in determining if your engine family meets 
applicable requirements.
    (3) Before we test one of your engines, we may set its adjustable 
parameters to any point within the physically adjustable ranges (see 
Sec.  1048.115(e)).
    (4) Before we test one of your engines, we may calibrate it within 
normal production tolerances for anything we do not consider an 
adjustable parameter.
    (d) You may ask to use emission data from a previous model year 
instead of doing new tests, but only if all the following are true:
    (1) The engine family from the previous model year differs from the 
current engine family only with respect to model year.
    (2) The emission-data engine from the previous model year remains 
the appropriate emission-data engine under paragraph (b) of this 
section.
    (3) The data show that the emission-data engine would meet all the 
requirements that apply to the engine family covered by the application 
for certification.
    (e) We may require you to test a second engine of the same or 
different configuration in addition to the engine tested under 
paragraph (b) of this section.
    (f) If you use an alternate test procedure under 40 CFR 1065.10 and 
later testing shows that such testing does not produce results that are 
equivalent to the procedures specified in subpart F of this part, we 
may reject data you generated using the alternate procedure.
    171. Section 1048.240 is revised to read as follows:


Sec.  1048.240  How do I demonstrate that my engine family complies 
with exhaust emission standards?

    (a) For purposes of certification, your engine family is considered 
in compliance with the applicable numerical emission standards in Sec.  
1048.101(a) and (b) if all emission-data engines representing that 
family have test results showing deteriorated emission levels at or 
below these standards.
    (b) Your engine family is deemed not to comply if any emission-data 
engine representing that family has test results showing a deteriorated 
emission level above an applicable emission standard from Sec.  
1048.101 for any pollutant.
    (c) To compare emission levels from the emission-data engine with 
the applicable emission standards, apply deterioration factors to the 
measured emission levels for each pollutant. Specify the deterioration 
factors based on emission measurements using four significant figures, 
consistent with good engineering judgment. For example, your 
deterioration factors must take into account any available data from 
in-use testing with similar engines (see subpart E of this part). 
Small-volume engine manufacturers may use assigned deterioration 
factors that we establish. Apply deterioration factors as follows:
    (1) Multiplicative deterioration factor. For engines that use 
aftertreatment technology, such as catalytic converters, use a 
multiplicative deterioration factor for exhaust emissions. A 
multiplicative deterioration factor is the ratio of exhaust emissions 
at the end of useful life to exhaust emissions at the low-hour test 
point. Adjust the official emission results for each tested engine at 
the selected test point by multiplying the measured emissions by the 
deterioration factor. If the factor is less than one, use one.
    (2) Additive deterioration factor. For engines that do not use 
aftertreatment technology, use an additive deterioration factor for 
exhaust emissions. An additive deterioration factor is the difference 
between exhaust emissions at the end of useful life and exhaust 
emissions at the low-hour test point. Adjust the official emission 
results for each tested engine at the selected test point by adding the 
factor to the measured emissions. If the factor is less than zero, use 
zero.
    (d) Collect emission data using measurements to one more decimal 
place than the applicable standard. Apply the deterioration factor to 
the official emission result, as described in paragraph (c) of this 
section, then round the adjusted figure to the same number of decimal 
places as the emission standard. Compare the rounded emission levels to 
the emission standard for each emission-data engine. In the case of 
HC+NOX standards, apply the deterioration factor to each 
pollutant and then add the results before rounding.
    172. Section 1048.250 is amended by revising paragraphs (a) and (c) 
to read as follows:


Sec.  1048.250  What records must I keep and make available to EPA?

    (a) Organize and maintain the following records:
    (1) A copy of all applications and any summary information you send 
us.
    (2) Any of the information we specify in Sec.  1048.205 that you 
were not required to include in your application.
    (3) A detailed history of each emission-data engine. For each 
engine, describe all of the following:
    (i) The emission-data engine's construction, including its origin 
and buildup, steps you took to ensure that it represents production 
engines, any components you built specially for it, and all the 
components you include in your application for certification.
    (ii) How you accumulated engine operating hours (service 
accumulation), including the dates and the number of hours accumulated.
    (iii) All maintenance, including modifications, parts changes, and 
other service, and the dates and reasons for the maintenance.
    (iv) All your emission tests, including documentation on routine 
and standard tests, as specified in part 40 CFR part 1065, and the date 
and purpose of each test.
    (v) All tests to diagnose engine or emission-control performance, 
giving the date and time of each and the reasons for the test.
    (vi) Any other significant events.
    (4) Production figures for each engine family divided by assembly 
plant.
    (5) Keep a list of engine identification numbers for all the 
engines you produce under each certificate of conformity.
* * * * *
    (c) Store these records in any format and on any media, as long as 
you can promptly send us organized, written records in English if we 
ask for them. You must keep these records readily available. We may 
review them at any time.
* * * * *
    173. Section 1048.255 is revised to read as follows:


Sec.  1048.255  When may EPA deny, revoke, or void my certificate of 
conformity?

    (a) If we determine your application is complete and shows that the 
engine family meets all the requirements of this part and the Act, we 
will issue a certificate of conformity for your engine family for that 
model year. We may make the approval subject to additional conditions.

[[Page 54897]]

    (b) We may deny your application for certification if we determine 
that your engine family fails to comply with emission standards or 
other requirements of this part or the Act. Our decision may be based 
on a review of all information available to us. If we deny your 
application, we will explain why in writing.
    (c) In addition, we may deny your application or suspend or revoke 
your certificate if you do any of the following:
    (1) Refuse to comply with any testing or reporting requirements.
    (2) Submit false or incomplete information (paragraph (e) of this 
section applies if this is fraudulent).
    (3) Render inaccurate any test data.
    (4) Deny us from completing authorized activities despite our 
presenting a warrant or court order (see 40 CFR 1068.20). This includes 
a failure to provide reasonable assistance.
    (5) Produce engines for importation into the United States at a 
location where local law prohibits us from carrying out authorized 
activities.
    (6) Fail to supply requested information or amend your application 
to include all engines being produced.
    (7) Take any action that otherwise circumvents the intent of the 
Act or this part.
    (d) We may void your certificate if you do not keep the records we 
require or do not give us information when we ask for it.
    (e) We may void your certificate if we find that you intentionally 
submitted false or incomplete information.
    (f) If we deny your application or suspend, revoke, or void your 
certificate, you may ask for a hearing (see Sec.  1048.820).
    174. Section 1048.301 is amended by revising paragraphs (a) and (f) 
to read as follows:


Sec.  1048.301  When must I test my production-line engines?

    (a) If you produce engines that are subject to the requirements of 
this part, you must test them as described in this subpart.
* * * * *
    (f) We may ask you to make a reasonable number of production-line 
engines available for a reasonable time so we can test or inspect them 
for compliance with the requirements of this part. See 40 CFR 1068.27.
    175. Section 1048.305 is amended by revising paragraphs (d)(1), 
(f), and (g) to read as follows:


Sec.  1048.305  How must I prepare and test my production-line engines?

* * * * *
    (d) * * *
    (1) We may adjust or require you to adjust idle speed outside the 
physically adjustable range as needed only until the engine has 
stabilized emission levels (see paragraph (e) of this section). We may 
ask you for information needed to establish an alternate minimum idle 
speed.
* * * * *
    (f) Damage during shipment. If shipping an engine to a remote 
facility for production-line testing makes necessary an adjustment or 
repair, you must wait until after the initial emission test to do this 
work. We may waive this requirement if the test would be impossible or 
unsafe, or if it would permanently damage the engine. Report to us, in 
your written report under Sec.  1048.345, all adjustments or repairs 
you make on test engines before each test.
    (g) Retesting after invalid tests. You may retest an engine if you 
determine an emission test is invalid under subpart F of this part. 
Explain in your written report reasons for invalidating any test and 
the emission results from all tests. If you retest an engine and, 
within ten days after testing, ask to substitute results of the new 
tests for the original ones, we will answer within ten days after we 
receive your information.
    176. Section 1048.310 is amended by revising paragraphs (c) 
introductory text, (c)(2), (g), and (i) to read as follows:


Sec.  1048.310  How must I select engines for production-line testing?

* * * * *
    (c) Calculate the required sample size for each engine family. 
Separately calculate this figure for HC+NOX and for CO. The 
required sample size is the greater of these two calculated values. Use 
the following equation:

[GRAPHIC] [TIFF OMITTED] TP10SE04.001


Where:

N = Required sample size for the model year.
t95 = 95% confidence coefficient, which depends on the 
number of tests completed, n, as specified in the table in paragraph 
(c)(1) of this section. It defines 95% confidence intervals for a one-
tail distribution.
x = Mean of emission test results of the sample.
STD = Emission standard.
[sigma] = Test sample standard deviation (see paragraph (c)(2) of this 
section).
n = The number of tests completed in an engine family.
* * * * *
    (2) Calculate the standard deviation, [sigma], for the test sample 
using the following formula:

[GRAPHIC] [TIFF OMITTED] TP10SE04.002

Where:

Xi = Emission test result for an individual engine.
* * * * *
    (g) Continue testing any engine family for which the sample mean, 
x, is greater than the emission standard. This applies if the sample 
mean for either HC+NOX or for CO is greater than the 
emission standard. Continue testing until one of the following things 
happens:
    (1) The number of tests completed in an engine family, n, is 
greater than the required sample size, N, and the sample mean, x, is 
less than or equal to the emission standard. For example, if N = 3.1 
after the third test, the sample-size calculation does not allow you to 
stop testing.
    (2) The engine family does not comply according to Sec.  1048.315.
    (3) You test 30 engines from the engine family.
    (4) You test eight engines and one percent of your projected annual 
U.S.-directed production volume for the engine family.
    (5) You choose to declare that the engine family does not comply 
with the requirements of this subpart.
* * * * *
    (i) You may elect to test more randomly chosen engines than we 
require under this section. Include these engines in the sample-size 
calculations.
    177. Section 1048.325 is amended by revising paragraph (d) to read 
as follows:


Sec.  1048.325  What happens if an engine family fails the production-
line requirements?

* * * * *
    (d) Section 1048.335 specifies steps you must take to remedy the 
cause of the engine family's production-line failure. All the engines 
you have produced since the end of the last test period are presumed 
noncompliant and should be addressed in your proposed remedy. We may 
require you to apply the remedy to engines produced earlier if we 
determine that the cause of the failure is likely to have affected the 
earlier engines.
    178. Section 1048.350 is amended by revising paragraph (a) to read 
as follows:

[[Page 54898]]

Sec.  1048.350  What records must I keep?

    (a) Organize and maintain your records as described in this 
section. We may review your records at any time.
* * * * *
    179. Section 1048.425 is amended by revising paragraph (a) to read 
as follows:


Sec.  1048.425  What records must I keep?

    (a) Organize and maintain your records as described in this 
section. We may review your records at any time.
* * * * *
    180. Section 1048.501 is revised to read as follows:


Sec.  1048.501  How do I run a valid emission test?

    (a) Use the equipment and procedures for spark-ignition engines in 
40 CFR part 1065 to determine whether engines meet the duty-cycle 
emission standards in Sec.  1048.101(a) and (b). Measure the emissions 
of all the pollutants we regulate in Sec.  1048.101 using the full-flow 
or partial-flow dilute sampling procedures as specified in 40 CFR part 
1065. Use the applicable duty cycles specified in Sec. Sec.  1048.505 
and 1048.510.
    (b) Section 1048.515 describes the supplemental procedures for 
evaluating whether engines meet the field-testing emission standards in 
Sec.  1048.101(c).
    (c) Use the fuels specified in 40 CFR part 1065, subpart C, to 
perform valid tests for all the testing we require in this part, except 
as noted in Sec.  1048.515. For service accumulation, use the test fuel 
or any commercially available fuel that is representative of the fuel 
that in-use engines will use.
    (d) To test engines for evaporative emissions, use the equipment 
and procedures specified for testing diurnal emissions in 40 CFR 
86.107-96 and 86.133-96 with fuel meeting the specifications in 40 CFR 
part 1065, subpart C. Measure emissions from a test engine with a 
complete fuel system. Reported emission levels must be based on the 
highest emissions from three successive 24-hour periods of cycling 
temperatures. Note that you may omit testing for evaporative emissions 
during certification if you certify by design, as specified in Sec.  
1048.245.
    (e) You may use special or alternate procedures to the extent we 
allow them under 40 CFR 1065.10.
    (f) This subpart is addressed to you as a manufacturer, but it 
applies equally to anyone who does testing for you, and to us when we 
perform testing to determine if your engines meet emission standards.
    181. Section 1048.505 is revised to read as follows:


Sec.  1048.505  How do I test engines using steady-state duty cycles, 
including ramped-modal testing?

    This section describes how to test engines under steady-state 
conditions. In some cases, we allow you to choose the appropriate 
steady-state duty cycle for an engine. In these cases, you must use the 
duty cycle you select in your application for certification for all 
testing you perform for that engine family. If we test your engines to 
confirm that they meet emission standards, we will use the duty cycles 
you select for your own testing. We may also perform other testing as 
allowed by the Clean Air Act.
    (a) You may perform steady-state testing with either discrete-mode 
or ramped-modal cycles, as follows:
    (1) For discrete-mode testing, sample emissions separately for each 
mode, then calculate an average emission level for the whole cycle 
using the weighting factors specified for each mode. Calculate cycle 
statistics for the sequence of modes and compare with the specified 
values in 40 CFR part 1065 to confirm that the test is valid. Operate 
the engine and sampling system as follows:
    (i) Engines with NOX aftertreatment. For engines that 
depend on aftertreatment to meet the NOX emission standard, 
operate the engine for 5-6 minutes, then sample emissions for 1-3 
minutes in each mode.
    (ii) Engines without NOX aftertreatment. For other 
engines, operate the engine for at least 5 minutes, then sample 
emissions for at least 1 minute in each mode. Calculate cycle 
statistics for the sequence of modes and compare with the specified 
values in 40 CFR part 1065 to confirm that the test is valid.
    (2) For ramped-modal testing, start sampling at the beginning of 
the first mode and continue sampling until the end of the last mode. 
Calculate emissions and cycle statistics the same as for transient 
testing.
    (b) Measure emissions by testing the engine on a dynamometer with 
one or more of the following sets of duty cycles to determine whether 
it meets the steady-state emission standards in Sec.  1048.101(b):
    (1) For engines from an engine family that will be used only in 
variable-speed applications, use one of the following duty cycles:
    (i) The following duty cycle applies for discrete-mode testing:

                       Table 1 of Sec.   1048.505
------------------------------------------------------------------------
                                                  Minimum
  C2 mode                            Observed     time in     Weighting
   number      Engine speed \1\     torque \2\      mode       factors
                                                 (minutes)
------------------------------------------------------------------------
1..........  Maximum test speed..           25          3.0         0.06
2..........  Intermediate test             100          3.0         0.02
              speed.
3..........  Intermediate test              75          3.0         0.05
              speed.
4..........  Intermediate test              50          3.0         0.32
              speed.
5..........  Intermediate test              25          3.0         0.30
              speed.
6..........  Intermediate test              10          3.0         0.10
              speed.
7..........  Idle................            0          3.0        0.15
------------------------------------------------------------------------
\1\ Speed terms are defined in 40 CFR part 1065.
\2\ The percent torque is relative to the maximum torque at the given
  engine speed.

    (ii) The following duty cycle applies for ramped-modal testing:

[[Page 54899]]



                                           Table 2 of Sec.   1048.505
----------------------------------------------------------------------------------------------------------------
                                       Time in
              RMC mode                   mode          Engine speed 1, 2             Torque  (percent) 2, 3
                                      (seconds)
----------------------------------------------------------------------------------------------------------------
1a Steady-state....................          119  Warm Idle..................  0
1b Transition......................           20  Linear Transition..........  Linear Transition
2a Steady-state....................           29  Intermediate Speed.........  100
2b Transition......................           20  Intermediate Speed.........  Linear Transition
3a Steady-state....................          150  Intermediate Speed.........  10
3b Transition......................           20  Intermediate Speed.........  Linear Transition
4a Steady-state....................           80  Intermediate Speed.........  75
4b Transition......................           20  Intermediate Speed.........  Linear Transition
5a Steady-state....................          513  Intermediate Speed.........  25
5b Transition......................           20  Intermediate Speed.........  Linear Transition
6a Steady-state....................          549  Intermediate Speed.........  50
5b Transition......................           20  Linear Transition..........  Linear Transition
6a Steady-state....................           96  Maximum test speed.........  25
6b Transition......................           20  Linear Transition..........  Linear Transition
7 Steady-state.....................          124  Warm Idle..................  0
----------------------------------------------------------------------------------------------------------------
\1\ Speed terms are defined in 40 CFR part 1065.
\2\ Advance from one mode to the next within a 20-second transition phase. During the transition phase, command
  a linear progression from the torque setting of the current mode to the torque setting of the next mode.
\3\ The percent torque is relative to maximum torque at the commanded engine speed.

    (2) For engines from an engine family that will be used only at a 
single, rated speed, use one of the following duty cycles:
    (i) The following duty cycle applies for discrete-mode testing:

                       Table 3 of Sec.   1048.505
------------------------------------------------------------------------
                                                  Minimum
   D2 mode                                        time in     Weighting
    number        Engine speed      Torque \1\      mode       factors
                                                 (minutes)
------------------------------------------------------------------------
1............  Maximum test......          100          3.0         0.05
2............  Maximum test......           75          3.0         0.25
3............  Maximum test......           50          3.0         0.30
4............  Maximum test......           25          3.0         0.30
5............  Maximum test......           10          3.0        0.10
------------------------------------------------------------------------
\1\ The percent torque is relative to the maximum torque at maximum test
  speed.

    (ii) The following duty cycle applies for ramped-modal testing:

                                           Table 4 of Sec.   1048.505
----------------------------------------------------------------------------------------------------------------
                                       Time in
              RMC mode                   mode             Engine speed               Torque (percent) 1, 2
                                      (seconds)
----------------------------------------------------------------------------------------------------------------
1a Steady-state....................           53  Engine Governed............  100
1b Transition......................           20  Engine Governed............  Linear transition
2a Steady-state....................          101  Engine Governed............  10
2b Transition......................           20  Engine Governed............  Linear transition
3a Steady-state....................          277  Engine Governed............  75
3b Transition......................           20  Engine Governed............  Linear transition
4a Steady-state....................          339  Engine Governed............  25
4b Transition......................           20  Engine Governed............  Linear transition
5 Steady-state.....................          350  Engine Governed............  50
----------------------------------------------------------------------------------------------------------------
\1\ The percent torque is relative to maximum test torque.
\2\ Advance from one mode to the next within a 20-second transition phase. During the transition phase, command
  a linear progression from the torque setting of the current mode to the torque setting of the next mode.

    (3) Use a duty cycle from both paragraphs (b)(1) and (b)(2) of this 
section if you will not restrict an engine family to constant-speed or 
variable-speed applications.
    (4) Use a duty cycle specified in paragraph (b)(2) of this section 
for all severe-duty engines.
    (5) For high-load engines, use one of the following duty cycles:
    (i) The following duty cycle applies for discrete-mode testing:

[[Page 54900]]



                       Table 5 of Sec.   1048.505
------------------------------------------------------------------------
                                                  Minimum
   D1 mode                                        time in     Weighting
    number        Engine speed      Torque \1\      mode       factors
                                                 (minutes)
------------------------------------------------------------------------
1............  Maximum test......          100          3.0         0.50
2............  Maximum test......           75          3.0        0.50
------------------------------------------------------------------------
\1\ The percent torque is relative to the maximum torque at maximum test
  speed.

    (ii) The following duty cycle applies for discrete-mode testing:

                                           Table 6 of Sec.   1048.505
----------------------------------------------------------------------------------------------------------------
                                       Time in
             RMC modes                   mode        Engine speed (percent)           Torque (percent)1, 2
                                      (seconds)
----------------------------------------------------------------------------------------------------------------
1a Steady-state....................          290  Engine Governed............  100
1b Transition......................           20  Engine Governed............  Linear Transition
2 Steady-state.....................          290  Engine Governed............  75
----------------------------------------------------------------------------------------------------------------
\1\ The percent torque is relative to maximum test torque.
\2\ Advance from one mode to the next within a 20-second transition phase. During the transition phase, command
  a linear progression from the torque setting of the current mode to the torque setting of the next mode.

    (c) If we test an engine to confirm that it meets the duty-cycle 
emission standards, we will use the steady-state duty cycles that apply 
for that engine family.
    (d) During idle mode, operate the engine with the following 
parameters:
    (1) Hold the speed within your specifications.
    (2) Set the engine to operate at its minimum fueling rate.
    (3) Keep engine torque under 5 percent of maximum test torque.
    (e) For full-load operating modes, operate the engine at wide-open 
throttle.
    (f) See 40 CFR part 1065 for detailed specifications of tolerances 
and calculations.
    (g) For those cases where transient testing is not necessary, 
perform the steady-state test according to this section after an 
appropriate warm-up period, consistent with 40 CFR part 1065, subpart 
F.
    182. Section 1048.510 is amended by revising the section heading 
and paragraph (a) to read as follows:


Sec.  1048.510  Which duty cycles do I use for transient testing?

    (a) Starting with the 2007 model year, measure emissions by testing 
the engine on a dynamometer with one of the following transient duty 
cycles to determine whether it meets the transient emission standards 
in Sec.  1048.101(a):
    (1) For constant-speed engines and severe-duty engines, use the 
transient duty-cycle described in Appendix I of this part.
    (2) For all other engines, use the transient duty cycle described 
in Appendix II of this part.
* * * * *
    183. Section 1048.515 is amended by revising the section heading 
and paragraphs (a)(1) and (a)(2) to read as follows:


Sec.  1048.515  What are the field-testing procedures?

    (a) * * *
    (1) Remove the selected engines for testing in a laboratory. You 
may use an engine dynamometer to simulate normal operation, as 
described in this section.
    (2) Test the selected engines while they remain installed in the 
equipment. In 40 CFR part 1065, subpart J, we describe the equipment 
and sampling methods for testing engines in the field. Use fuel meeting 
the specifications of 40 CFR part 1065, subpart H, or a fuel typical of 
what you would expect the engine to use in service.
* * * * *
    184. Section 1048.601 is revised to read as follows:


Sec.  1048.601  What compliance provisions apply to these engines?

    Engine and equipment manufacturers, as well as owners, operators, 
and rebuilders of engines subject to the requirements of this part, and 
all other persons, must observe the provisions of this part, the 
requirements and prohibitions in 40 CFR part 1068, and the provisions 
of the Act.
    185. Section 1048.605 is revised to read as follows:


Sec.  1048.605  What provisions apply to engines certified under the 
motor-vehicle program?

    (a) General provisions. If you are an engine manufacturer, this 
section allows you to introduce new nonroad engines into commerce if 
they are already certified to the requirements that apply to 
compression-ignition engines under 40 CFR parts 85 and 86 for the 
appropriate model year. If you comply with all the provisions of this 
section, we consider the certificate issued under 40 CFR part 86 for 
each engine to also be a valid certificate of conformity under this 
part 1048 for its model year, without a separate application for 
certification under the requirements of this part 1048. See Sec.  
1048.610 for similar provisions that apply to engines certified to 
chassis-based standards for motor vehicles.
    (b) Equipment-manufacturer provisions. If you are not an engine 
manufacturer, you may produce nonroad equipment using motor-vehicle 
engines under this section as long as the engine has been properly 
labeled as specified in paragraph (d)(5) of this section and you do not 
make any of the changes described in paragraph (d)(2) of this section. 
If you modify the motor-vehicle engine in any of the ways described in 
paragraph (d)(2) of this section, we will consider you a manufacturer 
of a new nonroad engine. Such engine modifications prevent you from 
using the provisions of this section.
    (c) Liability. Engines for which you meet the requirements of this 
section are exempt from all the requirements and

[[Page 54901]]

prohibitions of this part, except for those specified in this section. 
Engines exempted under this section must meet all the applicable 
requirements from 40 CFR parts 85 and 86. This applies to engine 
manufacturers, equipment manufacturers who use these engines, and all 
other persons as if these engines were used in a motor vehicle. The 
prohibited acts of Sec.  1068.101(a)(1) apply to these new engines and 
equipment; however, we consider the certificate issued under 40 CFR 
part 86 for each engine to also be a valid certificate of conformity 
under this part 1048 for its model year. If we make a determination 
that these engines do not conform to the regulations during their 
useful life, we may require you to recall them under 40 CFR part 86 or 
40 CFR 1068.505.
    (d) Specific requirements. If you are an engine manufacturer and 
meet all the following criteria and requirements regarding your new 
nonroad engine, the engine is eligible for an exemption under this 
section:
    (1) Your engine must be covered by a valid certificate of 
conformity issued under 40 CFR part 86.
    (2) You must not make any changes to the certified engine that 
could reasonably be expected to increase its exhaust emissions for any 
pollutant, or its evaporative emissions. For example, if you make any 
of the following changes to one of these engines, you do not qualify 
for this exemption:
    (i) Change any fuel system or evaporative system parameters from 
the certified configuration (this does not apply to refueling 
controls).
    (ii) Change, remove, or fail to properly install any other 
component, element of design, or calibration specified in the engine 
manufacturer's application for certification. This includes 
aftertreatment devices and all related components.
    (iii) Modify or design the engine cooling system so that 
temperatures or heat rejection rates are outside the original engine 
manufacturer's specified ranges.
    (3) You must show that fewer than 50 percent of the engine model's 
total sales for the model year, from all companies, are used in nonroad 
applications, as follows:
    (i) If you are the original manufacturer of the engine, base this 
showing on your sales information.
    (ii) In all other cases, you must get the original manufacturer of 
the engine to confirm this based on its sales information.
    (4) You must ensure that the engine has the label we require under 
40 CFR part 86.
    (5) You must add a permanent supplemental label to the engine in a 
position where it will remain clearly visible after installation in the 
equipment. In the supplemental label, do the following:
    (i) Include the heading: ``NONROAD ENGINE EMISSION CONTROL 
INFORMATION''.
    (ii) Include your full corporate name and trademark. You may 
instead include the full corporate name and trademark of another 
company you choose to designate.
    (iii) State: ``THIS ENGINE WAS ADAPTED FOR NONROAD USE WITHOUT 
AFFECTING ITS EMISSION CONTROLS. THE EMISSION-CONTROL SYSTEM DEPENDS ON 
THE USE OF FUEL MEETING SPECIFICATIONS THAT APPLY FOR MOTOR-VEHICLE 
APPLICATIONS. OPERATING THE ENGINE ON OTHER FUELS MAY BE A VIOLATION OF 
FEDERAL LAW.''.
    (iv) State the date you finished modifying the engine (month and 
year), if applicable.
    (6) The original and supplemental labels must be readily visible 
after the engine is installed in the equipment or, if the equipment 
obscures the engine's emission control information label, the equipment 
manufacturer must attach duplicate labels, as described in 40 CFR 
1068.105.
    (7) Send the Designated Compliance Officer a signed letter by the 
end of each calendar year (or less often if we tell you) with all the 
following information:
    (i) Identify your full corporate name, address, and telephone 
number.
    (ii) List the engine models you expect to produce under this 
exemption in the coming year.
    (iii) State: ``We produce each listed engine model for nonroad 
application without making any changes that could increase its 
certified emission levels, as described in 40 CFR 1048.605.''.
    (e) Failure to comply. If your engines do not meet the criteria 
listed in paragraph (d) of this section, they will be subject to the 
standards, requirements, and prohibitions of this part 1048 and the 
certificate issued under 40 CFR part 86 will not be deemed to also be a 
certificate issued under this part 1048. Introducing these engines into 
commerce without a valid exemption or certificate of conformity under 
this part violates the prohibitions in 40 CFR 1068.101(a)(1).
    (f) Data submission. We may require you to send us emission test 
data on any applicable nonroad duty cycles.
    (g) Participation in averaging, banking and trading. Engines 
adapted for nonroad use under this section may generate credits under 
the ABT provisions in 40 CFR part 86. These engines must use emission 
credits under 40 CFR part 86 if they are certified to an FEL that 
exceeds an applicable standard under 40 CFR part 86.
    186. Section 1048.610 is revised to read as follows:


Sec.  1048.610  What provisions apply to vehicles certified under the 
motor-vehicle program?

    (a) General provisions. If you are a motor-vehicle manufacturer, 
this section allows you to introduce new nonroad engines or equipment 
into commerce if the vehicle is already certified to the requirements 
that apply under 40 CFR parts 85 and 86 for the appropriate model year. 
If you comply with all of the provisions of this section, we consider 
the certificate issued under 40 CFR part 86 for each motor vehicle to 
also be a valid certificate of conformity for the engine under this 
part 1048 for its model year, without a separate application for 
certification under the requirements of this part 1048. See Sec.  
1048.605 for similar provisions that apply to motor-vehicle engines 
produced for nonroad equipment.
    (b) Equipment-manufacturer provisions. If you are not an engine 
manufacturer, you may produce nonroad equipment from motor vehicles 
under this section as long as the equipment has the labels specified in 
paragraph (d)(5) of this section and you do not make any of the changes 
described in paragraph (d)(2) of this section. You must also add the 
fuel-inlet label we specify in Sec.  1048.135(e). If you modify the 
motor vehicle or its engine in any of the ways described in paragraph 
(d)(2) of this section, we will consider you a manufacturer of a new 
nonroad engine. Such modifications prevent you from using the 
provisions of this section.
    (c) Liability. Engines, vehicles, and equipment for which you meet 
the requirements of this section are exempt from all the requirements 
and prohibitions of this part, except for those specified in this 
section. Engines exempted under this section must meet all the 
applicable requirements from 40 CFR parts 85 and 86. This applies to 
engine manufacturers, equipment manufacturers, and all other persons as 
if the nonroad equipment were motor vehicles. The prohibited acts of 40 
CFR 1068.101(a)(1) apply to these new pieces of equipment; however, we 
consider the certificate issued under 40 CFR part 86 for each motor 
vehicle to also be a valid certificate of conformity for the engine 
under this part 1048 for its model year. If we make a determination 
that these

[[Page 54902]]

engines, vehicles, or equipment do not conform to the regulations 
during their useful life, we may require you to recall them under 40 
CFR part 86 or 40 CFR 1068.505.
    (d) Specific requirements. If you are a motor-vehicle manufacturer 
and meet all the following criteria and requirements regarding your new 
nonroad equipment and its engine, the engine is eligible for an 
exemption under this section:
    (1) Your equipment must be covered by a valid certificate of 
conformity as a motor vehicle issued under 40 CFR part 86.
    (2) You must not make any changes to the certified vehicle that we 
could reasonably expect to increase its exhaust emissions for any 
pollutant, or its evaporative emissions if it is subject to 
evaporative-emission standards. For example, if you make any of the 
following changes, you do not qualify for this exemption:
    (i) Change any fuel system or evaporative system parameters from 
the certified configuration, including refueling emission controls.
    (ii) Change, remove, or fail to properly install any other 
component, element of design, or calibration specified in the vehicle 
manufacturer's application for certification. This includes 
aftertreatment devices and all related components.
    (iii) Modify or design the engine cooling system so that 
temperatures or heat rejection rates are outside the original vehicle 
manufacturer's specified ranges.
    (iv) Add more than 500 pounds to the curb weight of the originally 
certified motor vehicle.
    (3) You must show that fewer than 50 percent of the total sales as 
a motor vehicle or a piece of nonroad equipment, from all companies, 
are used in nonroad applications, as follows:
    (i) If you are the original manufacturer of the vehicle, base this 
showing on your sales information.
    (ii) In all other cases, you must get the original manufacturer of 
the vehicle to confirm this based on their sales information.
    (4) The equipment must have the vehicle emission control 
information and fuel labels we require under 40 CFR 86.007-35.
    (5) You must add a permanent supplemental label to the equipment in 
a position where it will remain clearly visible. In the supplemental 
label, do the following:
    (i) Include the heading: ``NONROAD ENGINE EMISSION CONTROL 
INFORMATION''.
    (ii) Include your full corporate name and trademark. You may 
instead include the full corporate name and trademark of another 
company you choose to designate.
    (iii) State: ``THIS VEHICLE WAS ADAPTED FOR NONROAD USE WITHOUT 
AFFECTING ITS EMISSION CONTROLS. THE EMISSION-CONTROL SYSTEM DEPENDS ON 
THE USE OF FUEL MEETING SPECIFICATIONS THAT APPLY FOR MOTOR-VEHICLE 
APPLICATIONS. OPERATING THE ENGINE ON OTHER FUELS MAY BE A VIOLATION OF 
FEDERAL LAW.''.
    (iv) State the date you finished modifying the vehicle (month and 
year), if applicable.
    (6) The original and supplemental labels must be readily visible in 
the fully assembled equipment.
    (7) Send the Designated Compliance Officer a signed letter by the 
end of each calendar year (or less often if we tell you) with all the 
following information:
    (i) Identify your full corporate name, address, and telephone 
number.
    (ii) List the equipment models you expect to produce under this 
exemption in the coming year.
    (iii) State: ``We produced each listed engine or equipment model 
for nonroad application without making any changes that could increase 
its certified emission levels, as described in 40 CFR 1048.610.''.
    (e) Failure to comply. If your engines, vehicles, or equipment do 
not meet the criteria listed in paragraph (d) of this section, the 
engines will be subject to the standards, requirements, and 
prohibitions of this part 1048, and the certificate issued under 40 CFR 
part 86 will not be deemed to also be a certificate issued under this 
part 1048. Introducing these engines into commerce without a valid 
exemption or certificate of conformity under this part violates the 
prohibitions in 40 CFR 1068.101(a)(1).
    (f) Data submission. We may require you to send us emission test 
data on any applicable nonroad duty cycles.
    (g) Participation in averaging, banking and trading. Vehicles 
adapted for nonroad use under this section may generate credits under 
the ABT provisions in 40 CFR part 86. These vehicles must use emission 
credits under 40 CFR part 86 if they are certified to an FEL that 
exceeds an applicable standard under 40 CFR part 86.
    187. Section 1048.615 is amended by revising paragraphs (a)(2), 
(a)(3), (c), and (d) to read as follows:


Sec.  1048.615  What are the provisions for exempting engines designed 
for lawn and garden applications?

* * * * *
    (a) * * *
    (2) The engine must have a maximum engine power at or below 30 kW.
    (3) The engine must be in an engine family that has a valid 
certificate of conformity showing that it meets emission standards for 
Class II engines under 40 CFR part 90 for the appropriate model year.
* * * * *
    (c) If your engines do not meet the criteria listed in paragraph 
(a) of this section, they will be subject to the provisions of this 
part. Introducing these engines into commerce without a valid exemption 
or certificate of conformity violates the prohibitions in 40 CFR 
1068.101.
    (d) Engines exempted under this section are subject to all the 
requirements affecting engines under 40 CFR part 90. The requirements 
and restrictions of 40 CFR part 90 apply to anyone manufacturing these 
engines, anyone manufacturing equipment that uses these engines, and 
all other persons in the same manner as if these engines had a total 
maximum engine power at or below 19 Kw.
    188. Section 1048.620 is amended by revising paragraphs (a)(2), 
(a)(3), (c), (d), and (e) to read as follows:


Sec.  1048.620  What are the provisions for exempting large engines 
fueled by natural gas?

    (a) * * *
    (2) The engine must have maximum engine power at or above 250 kW.
    (3) The engine must be in an engine family that has a valid 
certificate of conformity showing that it meets emission standards for 
engines of that power rating under 40 CFR part 89 or 1039.
* * * * *
    (c) If your engines do not meet the criteria listed in paragraph 
(a) of this section, they will be subject to the provisions of this 
part. Introducing these engines into commerce without a valid exemption 
or certificate of conformity violates the prohibitions in 40 CFR 
1068.101.
    (d) Engines exempted under this section are subject to all the 
requirements affecting engines under 40 CFR part 89 or 1039. The 
requirements and restrictions of 40 CFR part 89 or 1039 apply to anyone 
manufacturing these engines, anyone manufacturing equipment that uses 
these engines, and all other persons in the same manner as if these 
were nonroad diesel engines.

[[Page 54903]]

    (e) You may request an exemption under this section by submitting 
an application for certification for the engines under 40 CFR part 89 
or 1039.
    189. Section 1048.625 is revised to read as follows:


Sec.  1048.625  What special provisions apply to engines using 
noncommercial fuels?

    In Sec.  1048.115(e), we generally require that engines meet 
emission standards for any adjustment within the full range of any 
adjustable parameters. For engines that use noncommercial fuels 
significantly different than the specified test fuel of the same type, 
you may ask to use the parameter-adjustment provisions of this section 
instead of those in Sec.  1048.115(e). Engines certified under this 
section must be in a separate engine family.
    (a) If we approve your request, the following provisions apply:
    (1) You must certify the engine using the test fuel specified in 
Sec.  1048.501.
    (2) You may produce the engine without limits or stops that keep 
the engine adjusted within the certified range.
    (3) You must specify in-use adjustments different than the 
adjustable settings appropriate for the specified test fuel, consistent 
with the provisions of paragraph (b)(1) of this section.
    (b) To produce engines under this section, you must do the 
following:
    (1) Specify in-use adjustments needed so the engine's level of 
emission control for each regulated pollutant is equivalent to that 
from the certified configuration.
    (2) Add the following information to the emission control 
information label specified in Sec.  1048.135:
    (i) Include instructions describing how to adjust the engine to 
operate in a way that maintains the effectiveness of the emission-
control system.
    (ii) State: ``THIS ENGINE IS CERTIFIED TO OPERATE IN APPLICATIONS 
USING NONCOMMERCIAL FUEL. MALADJUSTMENT OF THE ENGINE IS A VIOLATION OF 
FEDERAL LAW SUBJECT TO CIVIL PENALTY.''.
    (3) Keep records to document the destinations and quantities of 
engines produced under this section.
    190. A new Sec.  1048.630 is added to read as follows:


Sec.  1048.630  What are the provisions for exempting engines used 
solely for competition?

    The provisions of this section apply for new engines built on or 
after January 1, 2006.
    (a) Equipment manufacturers may use uncertified engines if the 
vehicles or equipment in which they are installed will be used solely 
for competition.
    (b) The definition of nonroad engine in 40 CFR 1068.30 excludes 
engines used solely for competition. These engines are not required to 
comply with this part 1048 or 40 CFR part 89, but 40 CFR 1068.101 
prohibits the use of competition engines for noncompetition purposes.
    (c) We consider a vehicle or piece of equipment to be one that will 
be used solely for competition if it has features that are not easily 
removed that would make its use other than in competition unsafe, 
impractical, or highly unlikely.
    (d) As an engine manufacturer, your engine is exempt without our 
prior approval if you have a written request for an exempted engine 
from the equipment manufacturer showing the basis for believing that 
the equipment will be used solely for competition. You must permanently 
label engines exempted under this section to clearly indicate that they 
are to be used solely for competition. Failure to properly label an 
engine will void the exemption.
    (e) We may discontinue an exemption under this section if we find 
that engines are not used solely for competition.
    191. A new Sec.  1048.635 is added to read as follows:


Sec.  1048.635  What special provisions apply to branded engines?

    The following provisions apply if you identify the name and 
trademark of another company instead of your own on your emission 
control information label, as provided by Sec.  1048.135(c)(2):
    (a) You must have a contractual agreement with the other company 
that obligates that company to take the following steps:
    (1) Meet the emission warranty requirements that apply under Sec.  
1048.120. This may involve a separate agreement involving reimbursement 
of warranty-related expenses.
    (2) Report all warranty-related information to the certificate 
holder.
    (b) In your application for certification, identify the company 
whose trademark you will use and describe the arrangements you have 
made to meet your requirements under this section.
    (c) You remain responsible for meeting all the requirements of this 
chapter, including warranty and defect-reporting provisions.
    192. Section 1048.801 is revised to read as follows:


Sec.  1048.801  What definitions apply to this part?

    The following definitions apply to this part. The definitions apply 
to all subparts unless we note otherwise. All undefined terms have the 
meaning the Act gives to them. The definitions follow:
    Act means the Clean Air Act, as amended, 42 U.S.C. 7401-7671q.
    Adjustable parameter means any device, system, or element of design 
that someone can adjust (including those which are difficult to access) 
and that, if adjusted, may affect emissions or engine performance 
during emission testing or normal in-use operation. This includes, but 
is not limited to, parameters related to injection timing and fueling 
rate. You may ask us to exclude a parameter that is difficult to access 
if it cannot be adjusted to affect emissions without significantly 
degrading engine performance, or if you otherwise show us that it will 
not be adjusted in a way that affects emissions during in-use 
operation.
    Aftertreatment means relating to a catalytic converter, particulate 
filter, or any other system, component, or technology mounted 
downstream of the exhaust valve (or exhaust port) whose design function 
is to decrease emissions in the engine exhaust before it is exhausted 
to the environment. Exhaust-gas recirculation (EGR) and turbochargers 
are not aftertreatment.
    Aircraft means any vehicle capable of sustained air travel above 
treetop heights.
    All-terrain vehicle has the meaning we give in 40 CFR 1051.801.
    Amphibious vehicle means a vehicle with wheels or tracks that is 
designed primarily for operation on land and secondarily for operation 
in water.
    Auxiliary emission-control device means any element of design that 
senses temperature, motive speed, engine RPM, transmission gear, or any 
other parameter for the purpose of activating, modulating, delaying, or 
deactivating the operation of any part of the emission-control system.
    Blue Sky Series engine means an engine meeting the requirements of 
Sec.  1048.140.
    Brake power means the usable power output of the engine, not 
including power required to fuel, lubricate, or heat the engine, 
circulate coolant to the engine, or to operate aftertreatment devices.
    Calibration means the set of specifications and tolerances specific 
to a particular design, version, or application of a component or 
assembly capable of functionally describing its operation over its 
working range.
    Certification means obtaining a certificate of conformity for an 
engine family that complies with the emission standards and 
requirements in this part.

[[Page 54904]]

    Certified emission level means the highest deteriorated emission 
level in an engine family for a given pollutant from either transient 
or steady-state testing.
    Compression-ignition means relating to a type of reciprocating, 
internal-combustion engine that is not a spark-ignition engine.
    Constant-speed engine means an engine whose certification is 
limited to constant-speed operation. Engines whose constant-speed 
governor function is removed or disabled are no longer constant-speed 
engines.
    Constant-speed operation means engine operation with a governor 
that controls the operator input to maintain an engine at a reference 
speed, even under changing load. For example, an isochronous governor 
changes reference speed temporarily during a load change, then returns 
the engine to its original reference speed after the engine stabilizes. 
Isochronous governors typically allow speed changes up to 1.0%. Another 
example is a speed-droop governor, which has a fixed reference speed at 
zero load and allows the reference speed to decrease as load increases. 
With speed-droop governors, speed typically decreases (3 to 10)% below 
the reference speed at zero load, such that the minimum reference speed 
occurs near the engine's point of maximum power.
    Crankcase emissions means airborne substances emitted to the 
atmosphere from any part of the engine crankcase's ventilation or 
lubrication systems. The crankcase is the housing for the crankshaft 
and other related internal parts.
    Critical emission-related component means any of the following 
components:
    (1) Electronic control units, aftertreatment devices, fuel-metering 
components, EGR-system components, crankcase-ventilation valves, all 
components related to charge-air compression and cooling, and all 
sensors and actuators associated with any of these components.
    (2) Any other component whose primary purpose is to reduce 
emissions.
    Designated Compliance Officer means the Manager, Engine Programs 
Group (6405-J), U.S. Environmental Protection Agency, 1200 Pennsylvania 
Ave., NW., Washington, DC 20460.
    Designated Enforcement Officer means the Director, Air Enforcement 
Division (2242A), U.S. Environmental Protection Agency, 1200 
Pennsylvania Ave., NW.,Washington, DC 20460.
    Deteriorated emission level means the emission level that results 
from applying the appropriate deterioration factor to the official 
emission result of the emission-data engine.
    Deterioration factor means the relationship between emissions at 
the end of useful life and emissions at the low-hour test point, 
expressed in one of the following ways:
    (1) For multiplicative deterioration factors, the ratio of 
emissions at the end of useful life to emissions at the low-hour test 
point.
    (2) For additive deterioration factors, the difference between 
emissions at the end of useful life and emissions at the low-hour test 
point.
    Discrete-mode means relating to the discrete-mode type of steady-
state test described in Sec.  1048.505.
    Emission-control system means any device, system, or element of 
design that controls or reduces the regulated emissions from an engine.
    Emission-data engine means an engine that is tested for 
certification. This includes engines tested to establish deterioration 
factors.
    Emission-related maintenance means maintenance that substantially 
affects emissions or is likely to substantially affect emission 
deterioration.
    Engine configuration means a unique combination of engine hardware 
and calibration within an engine family. Engines within a single engine 
configuration differ only with respect to normal production 
variability.
    Engine family has the meaning given in Sec.  1048.230.
    Engine manufacturer means the manufacturer of the engine. See the 
definition of ``manufacturer'' in this section.
    Equipment manufacturer means a manufacturer of nonroad equipment. 
All nonroad equipment manufacturing entities under the control of the 
same person are considered to be a single nonroad equipment 
manufacturer.
    Excluded means relating to an engine that either:
    (1) Has been determined not to be a nonroad engine, as specified in 
40 CFR 1068.30; or
    (2) Is a nonroad engine that, according to Sec.  1048.5, is not 
subject to this part 1048.
    Exempted has the meaning we give in 40 CFR 1068.30.
    Exhaust-gas recirculation means a technology that reduces emissions 
by routing exhaust gases that had been exhausted from the combustion 
chamber(s) back into the engine to be mixed with incoming air before or 
during combustion. The use of valve timing to increase the amount of 
residual exhaust gas in the combustion chamber(s) that is mixed with 
incoming air before or during combustion is not considered exhaust-gas 
recirculation for the purposes of this part.
    Fuel system means all components involved in transporting, 
metering, and mixing the fuel from the fuel tank to the combustion 
chamber(s), including the fuel tank, fuel tank cap, fuel pump, fuel 
filters, fuel lines, carburetor or fuel-injection components, and all 
fuel-system vents.
    Fuel type means a general category of fuels such as gasoline or 
natural gas. There can be multiple grades within a single fuel type, 
such as winter-grade and summer-grade gasoline.
    Good engineering judgment has the meaning we give in 40 CFR 
1068.30. See 40 CFR 1068.5 for the administrative process we use to 
evaluate good engineering judgment.
    High-cost warranted part means a component covered by the emission-
related warranty with a replacement cost (at the time of certification) 
exceeding $400 (in 1998 dollars). Adjust this value using the most 
recent annual average consumer price index information published by the 
U.S. Bureau of Labor Statistics. For this definition, replacement cost 
includes the retail cost of the part plus labor and standard diagnosis.
    High-load engine means an engine for which the engine manufacturer 
can provide clear evidence that operation below 75 percent of maximum 
load in it's final application will be rare.
    Hydrocarbon (HC) means the hydrocarbon group on which the emission 
standards are based for each fuel type, as described in Sec.  
1048.101(e).
    Identification number means a unique specification (for example, a 
model number/serial number combination) that allows someone to 
distinguish a particular engine from other similar engines.
    Intermediate test speed has the meaning we give in 40 CFR 1065.515.
    Low-hour means relating to an engine with stabilized emissions and 
represents the undeteriorated emission level. This would generally 
involve less than 300 hours of operation.
    Manufacturer has the meaning given in section 216(1) of the Act. In 
general, this term includes any person who manufactures an engine, 
vehicle, or piece of equipment for sale in the United States or 
otherwise introduces a new nonroad engine into commerce in the United 
States. This includes importers who import engines, equipment, or 
vehicles for resale.
    Marine engine means a nonroad engine that is installed or intended 
to be installed on a marine vessel. This includes a portable auxiliary 
engine only if its fueling, cooling, or exhaust system is an integral 
part of the vessel. There are two kinds of marine engines:

[[Page 54905]]

    (1) Propulsion marine engine means a marine engine that moves a 
vessel through the water or directs the vessel's movement.
    (2) Auxiliary marine engine means a marine engine not used for 
propulsion.
    Marine vessel has the meaning given in 1 U.S.C. 3, except that it 
does not include amphibious vehicles. The definition in 1 U.S.C. 3 very 
broadly includes every craft capable of being used as a means of 
transportation on water.
    Maximum engine power has one of the following meanings:
    (1) For engines at or below 30 kW, maximum engine power has the 
meaning given in 40 CFR 90.2.
    (2) For engines above 30 kW, maximum engine power has the meaning 
given in 40 CFR 1039.140.
    Maximum test speed has the meaning we give in 40 CFR 1065.515.
    Maximum test torque has the meaning we give in 40 CFR 1065.1001.
    Model year means one of the following things:
    (1) For freshly manufactured equipment and engines (see definition 
of ``new nonroad engine,'' paragraph (1)), model year means one of the 
following:
    (i) Calendar year.
    (ii) Your annual new model production period if it is different 
than the calendar year. This must include January 1 of the calendar 
year for which the model year is named. It may not begin before January 
2 of the previous calendar year and it must end by December 31 of the 
named calendar year.
    (2) For an engine that is converted to a nonroad engine after being 
placed into service as a motor-vehicle engine or a stationary engine, 
model year means the calendar year in which the engine was originally 
produced (see definition of ``new nonroad engine,'' paragraph (2)).
    (3) For a nonroad engine excluded under Sec.  1048.5 that is later 
converted to operate in an application that is not excluded, model year 
means the calendar year in which the engine was originally produced 
(see definition of ``new nonroad engine,'' paragraph (3)).
    (4) For engines that are not freshly manufactured but are installed 
in new nonroad equipment, model year means the calendar year in which 
the engine is installed in the new nonroad equipment (see definition of 
``new nonroad engine,'' paragraph (4)).
    (5) For imported engines:
    (i) For imported engines described in paragraph (5)(i) of the 
definition of ``new nonroad engine,'' model year has the meaning given 
in paragraphs (1) through (4) of this definition.
    (ii) [Reserved]
    Motor vehicle has the meaning we give in 40 CFR 85.1703(a). In 
general, motor vehicle means any vehicle that EPA deems to be capable 
of safe and practical use on streets or highways that has a maximum 
ground speed above 40 kilometers per hour (25 miles per hour) over 
level, paved surfaces.
    New nonroad engine means any of the following things:
    (1) A freshly manufactured nonroad engine for which the ultimate 
purchaser has never received the equitable or legal title. This kind of 
engine might commonly be thought of as ``brand new.'' In the case of 
this paragraph (1), the engine becomes new when it is fully assembled 
for the first time. The engine is no longer new when the ultimate 
purchaser receives the title or the product is placed into service, 
whichever comes first.
    (2) An engine originally manufactured as a motor-vehicle engine or 
a stationary engine that is later intended to be used in a piece of 
nonroad equipment. In this case, the engine is no longer a motor-
vehicle or stationary engine and becomes a ``new nonroad engine''. The 
engine is no longer new when it is placed into nonroad service.
    (3) A nonroad engine that has been previously placed into service 
in an application we exclude under Sec.  1048.5, where that engine is 
installed in a piece of equipment that is covered by this part 1048. 
The engine is no longer new when it is placed into nonroad service 
covered by this part 1048. For example, this would apply to a marine-
propulsion engine that is no longer used in a marine vessel.
    (4) An engine not covered by paragraphs (1) through (3) of this 
definition that is intended to be installed in new nonroad equipment. 
The engine is no longer new when the ultimate purchaser receives a 
title for the equipment or the product is placed into service, 
whichever comes first. This generally includes installation of used 
engines in new equipment.
    (5) An imported nonroad engine, subject to the following 
provisions:
    (i) An imported nonroad engine covered by a certificate of 
conformity issued under this part that meets the criteria of one or 
more of paragraphs (1) through (4) of this definition, where the 
original engine manufacturer holds the certificate, is new as defined 
by those applicable paragraphs.
    (ii) An imported nonroad engine covered by a certificate of 
conformity issued under this part, where someone other than the 
original engine manufacturer holds the certificate (such as when the 
engine is modified after its initial assembly), becomes new when it is 
imported. It is no longer new when the ultimate purchaser receives a 
title for the engine or it is placed into service, whichever comes 
first.
    (iii) An imported nonroad engine that is not covered by a 
certificate of conformity issued under this part at the time of 
importation is new, but only if it was produced on or after January 1, 
2004. This addresses uncertified engines and equipment initially placed 
into service that someone seeks to import into the United States. 
Importation of this kind of new nonroad engine (or equipment containing 
such an engine) is generally prohibited by 40 CFR part 1068.
    New nonroad equipment means either of the following things:
    (1) A nonroad piece of equipment for which the ultimate purchaser 
has never received the equitable or legal title. The product is no 
longer new when the ultimate purchaser receives this title or the 
product is placed into service, whichever comes first.
    (2) An imported nonroad piece of equipment with an engine not 
covered by a certificate of conformity issued under this part at the 
time of importation and manufactured after January 1, 2004.
    Noncommercial fuel means a combustible product that is not marketed 
as a commercial fuel, but is used as a fuel for nonroad engines. For 
example, this includes methane that is produced and released from 
landfills or oil wells, or similar unprocessed fuels that are not 
intended to meet any otherwise applicable fuel specifications. See 
Sec.  1048.615 for provisions related to engines designed to burn 
noncommercial fuels.
    Noncompliant engine means an engine that was originally covered by 
a certificate of conformity, but is not in the certified configuration 
or otherwise does not comply with the conditions of the certificate.
    Nonconforming engine means an engine not covered by a certificate 
of conformity that would otherwise be subject to emission standards.
    Nonmethane hydrocarbon means the difference between the emitted 
mass of total hydrocarbons and the emitted mass of methane.
    Nonroad means relating to nonroad engines or equipment that 
includes nonroad engines.
    Nonroad engine has the meaning we give in 40 CFR 1068.30. In 
general this means all internal-combustion engines except motor vehicle 
engines, stationary engines, engines used solely for competition, or 
engines used in aircraft.

[[Page 54906]]

This part does not apply to all nonroad engines (see Sec.  1048.5).
    Nonroad equipment means a piece of equipment that is powered by one 
or more nonroad engines.
    Off-highway motorcycle has the meaning we give in 40 CFR 1051.801. 
(Note: highway motorcycles are regulated under 40 CFR part 86.)
    Official emission result means the measured emission rate for an 
emission-data engine on a given duty cycle before the application of 
any deterioration factor, but after the applicability of regeneration 
adjustment factors.
    Oxides of nitrogen has the meaning we give in 40 CFR part 1065.
    Piece of equipment means any vehicle, vessel, or other type of 
equipment using engines to which this part applies.
    Placed into service means put into initial use for its intended 
purpose.
    Point of first retail sale means the location at which the initial 
retail sale occurs. This generally means an equipment dealership, but 
may also include an engine seller or distributor in cases where loose 
engines are sold to the general public for uses such as replacement 
engines.
    Ramped-modal means relating to the ramped-modal type of steady-
state test described in Sec.  1048.505.
    Rated speed means the maximum full-load governed speed for governed 
engines and the speed of maximum power for ungoverned engines.
    Revoke has the meaning we give in 40 CFR 1068.30.
    Round means to round numbers according to NIST Special Publication 
811(incorporated by reference in Sec.  1048.810), unless otherwise 
specified.
    Scheduled maintenance means adjusting, repairing, removing, 
disassembling, cleaning, or replacing components or systems 
periodically to keep a part or system from failing, malfunctioning, or 
wearing prematurely. It also may mean actions you expect are necessary 
to correct an overt indication of failure or malfunction for which 
periodic maintenance is not appropriate.
    Severe-duty application includes concrete saws, concrete pumps, and 
any other application where an engine manufacturer can provide clear 
evidence that the majority of installations need air-cooled engines as 
a result of operation in a severe-duty environment.
    Severe-duty engine means an engine from an engine family in which 
the majority of engines are installed in severe-duty applications.
    Small-volume engine manufacturer means a company with fewer than 
200 employees. This includes any employees working for parent or 
subsidiary companies.
    Snowmobile has the meaning we give in 40 CFR 1051.801.
    Spark-ignition means relating to a gasoline-fueled engine or any 
other type of engine with a spark plug (or other sparking device) and 
with operating characteristics significantly similar to the theoretical 
Otto combustion cycle. Spark-ignition engines usually use a throttle to 
regulate intake air flow to control power during normal operation.
    Steady-state means relating to emission tests in which engine speed 
and load are held at a finite set of essentially constant values. 
Steady-state tests are either discrete-mode tests or ramped-modal 
tests.
    Stoichiometry means the proportion of a mixture of air and fuel 
such that the fuel is fully oxidized with no remaining oxygen. For 
example, stoichiometric combustion in gasoline engines typically occurs 
at an air-fuel mass ratio of about 14.7.
    Suspend has the meaning we give in 40 CFR 1068.30.
    Test engine means an engine in a test sample.
    Test sample means the collection of engines selected from the 
population of an engine family for emission testing. This may include 
testing for certification, production-line testing, or in-use testing.
    Tier 1 means relating to the emission standards and other 
requirements that apply beginning with the 2004 model year.
    Tier 2 means relating to the emission standards and other 
requirements that apply beginning with the 2007 model year.
    Total hydrocarbon means the combined mass of organic compounds 
measured by the specified procedure for measuring total hydrocarbon, 
expressed as a hydrocarbon with a hydrogen-to-carbon mass ratio of 
1.85:1.
    Total hydrocarbon equivalent means the sum of the carbon mass 
contributions of non-oxygenated hydrocarbons, alcohols and aldehydes, 
or other organic compounds that are measured separately as contained in 
a gas sample, expressed as exhaust hydrocarbon from petroleum-fueled 
engines. The hydrogen-to-carbon ratio of the equivalent hydrocarbon is 
1.85:1.
    Ultimate purchaser means, with respect to any new nonroad equipment 
or new nonroad engine, the first person who in good faith purchases 
such new nonroad equipment or new nonroad engine for purposes other 
than resale.
    United States has the meaning we give in 40 CFR 1068.30.
    Upcoming model year means for an engine family the model year after 
the one currently in production.
    U.S.-directed production volume means the number of engine units, 
subject to the requirements of this part, produced by a manufacturer 
for which the manufacturer has a reasonable assurance that sale was or 
will be made to ultimate purchasers in the United States.
    Useful life means the period during which the engine is designed to 
properly function in terms of reliability and fuel consumption, without 
being remanufactured, specified as a number of hours of operation or 
calendar years, whichever comes first. It is the period during which a 
new nonroad engine is required to comply with all applicable emission 
standards. See Sec.  1048.101(g).
    Variable-speed engine means an engine that is not a constant-speed 
engine.
    Variable-speed operation means engine operation that does not meet 
the definition of constant-speed operation.
    Void has the meaning we give in 40 CFR 1068.30.
    Volatile liquid fuel means any fuel other than diesel or biodiesel 
that is a liquid at atmospheric pressure and has a Reid Vapor Pressure 
higher than 2.0 pounds per square inch.
    Wide-open throttle means maximum throttle opening. Unless this is 
specified at a given speed, it refers to maximum throttle opening at 
maximum speed. For electronically controlled or other engines with 
multiple possible fueling rates, wide-open throttle also means the 
maximum fueling rate at maximum throttle opening under test conditions.
    We (us, our) means the Administrator of the Environmental 
Protection Agency and any authorized representatives.
    193. Section 1048.805 is amended by adding ``NIST'' to the table in 
alphabetical order to read as follows:


Sec.  1048.805  What symbols, acronyms, and abbreviations does this 
part use?

* * * * *
NIST National Institute of Standards and Technology.
    194. Section 1048.810 is amended by revising the introductory text 
and paragraphs (a) and (b) to read as follows:


Sec.  1048.810  What materials does this part reference?

    Documents listed in this section have been incorporated by 
reference into this part. The Director of the Federal Register approved 
the incorporation by reference as prescribed in 5 U.S.C. 552(a) and 1 
CFR part 51. Anyone may inspect copies at the U.S. EPA, Air and 
Radiation Docket and Information

[[Page 54907]]

Center, 1301 Constitution Ave., NW., Room B102, EPA West Building, 
Washington, DC 20460 or at the National Archives and Records 
Administration (NARA). For information on the availability of this 
material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html
.

    (a) NIST material. Table 1 of this section lists material from the 
National Institute of Standards and Technology that we have been 
incorporated by reference. The first column lists the number and name 
of the material. The second column lists the sections of this part 
where we reference it. Anyone may purchase copies of these materials 
from the Government Printing Office, Washington, DC 20402 or download 
them from the Internet at http://physics.nist.gov/Pubs/SP811/. Table 1 

follows:

               Table 1 of Sec.   1048.810.--NIST Materials
------------------------------------------------------------------------
                                                              Part 1048
                  Document number and name                    reference
------------------------------------------------------------------------
NIST Special Publication 811, Guide for the Use of the          1048.801
 International System of Units (SI), 1995 Edition..........
------------------------------------------------------------------------

    (b) SAE material. Table 2 of this section lists material from the 
Society of Automotive Engineering that we have incorporated by 
reference. The first column lists the number and name of the material. 
The second column lists the sections of this part where we reference 
it. Anyone may purchase copies of these materials from the Society of 
Automotive Engineers, 400 Commonwealth Drive, Warrendale, PA 15096. 
Table 2 follows:

               Table 2 of Sec.   1048.810.--SAE Materials
------------------------------------------------------------------------
                                                              Part 1048
                  Document number and name                    reference
------------------------------------------------------------------------
SAE J1930, Electrical/Electronic Systems Diagnostic Terms,      1048.135
 Definitions, Abbreviations, and Acronyms, revised May
 1998......................................................
SAE J2260, Nonmetallic Fuel System Tubing with One or More      1048.105
 Layers, November 1996.....................................
------------------------------------------------------------------------

* * * * *
    195. Section 1048.815 is revised to read as follows:


Sec.  1048.815  What provisions apply to confidential information?

    (a) Clearly show what you consider confidential by marking, 
circling, bracketing, stamping, or some other method.
    (b) We will store your confidential information as described in 40 
CFR part 2. Also, we will disclose it only as specified in 40 CFR part 
2. This applies both to any information you send us and to any 
information we collect from inspections, audits, or other site visits.
    (c) If you send us a second copy without the confidential 
information, we will assume it contains nothing confidential whenever 
we need to release information from it.
    (d) If you send us information without claiming it is confidential, 
we may make it available to the public without further notice to you, 
as described in 40 CFR 2.204.
    196. Section 1048.820 is revised to read as follows:


Sec.  1048.820  How do I request a hearing?

    (a) You may request a hearing under certain circumstances, as 
described elsewhere in this part. To do this, you must file a written 
request, including a description of your objection and any supporting 
data, within 30 days after we make a decision.
    (b) For a hearing you request under the provisions of this part, we 
will approve your request if we find that your request raises a 
substantial factual issue.
    (c) If we agree to hold a hearing, we will use the procedures 
specified in 40 CFR part 1068, subpart G.

PART 1051--CONTROL OF EMISSIONS FROM RECREATIONAL ENGINES AND 
VEHICLES

    197. The authority citation for part 1051 is revised to read as 
follows:

    Authority: 42 U.S.C. 7401-7671q.

    198. The heading for subpart A is revised to read as follows:

Subpart A--Overview and Applicability

    199. Section 1051.1 is revised to read as follows:


Sec.  1051.1  Does this part apply for my vehicles or engines?

    (a) The regulations in this part 1051 apply for all the following 
new recreational vehicles or new engines used in the following 
recreational vehicles, except as provided in Sec.  1051.5:
    (1) Snowmobiles.
    (2) Off-highway motorcycles.
    (3) All-terrain vehicles (ATVs).
    (4) Offroad utility vehicles with engines with displacement less 
than or equal to 1000 cc, maximum engine power less than or equal to 30 
kW, and maximum vehicle speed of 25 miles per hour or higher. Offroad 
utility vehicles that are subject to this part are subject to the same 
requirements as ATVs. This means that any requirement that applies to 
ATVs also applies to these offroad utility vehicles, without regard to 
whether the regulatory language mentions offroad utility vehicles.
    (b) In certain cases, the regulations in this part 1051 apply to 
new engines under 50 cc used in motorcycles that are motor vehicles. 
See 40 CFR 86.447-2006 or 86.448-2006 for provisions related to this 
allowance.
    (c) This part 1051 applies for new recreational vehicles starting 
in the 2006 model year, except as described in subpart B of this part. 
You need not follow this part for vehicles you produce before the 2006 
model year, unless you certify voluntarily. See Sec. Sec.  1051.103 
through 1051.110, Sec.  1051.145, and the definition of ``model year'' 
in Sec.  1051.801 for more information about the timing of the 
requirements.
    (d) The requirements of this part begin to apply when a vehicle is 
new. See the definition of ``new'' in Sec.  1051.801 for more 
information. In some cases, vehicles or engines that have been 
previously used may be considered ``new'' for the purposes of this 
part.
    (e) The evaporative emission requirements of this part apply to 
highway motorcycles, as specified in 40 CFR part 86, subpart E.
    200. Section 1051.5 is revised to read as follows:


Sec.  1051.5  Which engines are excluded from this part's requirements?

    (a) You may exclude vehicles with compression-ignition engines. See 
40 CFR part 89 for regulations that cover these engines.
    (b) We may require you to label an engine or vehicle (or both) if 
this section excludes it and other requirements in this chapter do not 
apply.
    201. Section 1051.10 is revised to read as follows:


Sec.  1051.10  How is this part organized?

    The regulations in this part 1051 contain provisions that affect 
both vehicle manufacturers and others. However, the requirements of 
this part are generally addressed to the vehicle manufacturer. The term 
``you'' generally means the vehicle manufacturer, as defined in Sec.  
1051.801. This part 1051 is divided into the following subparts:
    (a) Subpart A of this part defines the applicability of part 1051 
and gives an overview of regulatory requirements.

[[Page 54908]]

    (b) Subpart B of this part describes the emission standards and 
other requirements that must be met to certify engines under this part. 
Note that Sec.  1051.145 discusses certain interim requirements and 
compliance provisions that apply only for a limited time.
    (c) Subpart C of this part describes how to apply for a certificate 
of conformity.
    (d) Subpart D of this part describes general provisions for testing 
production-line engines.
    (e) [Reserved]
    (f) Subpart F of this part describes how to test your engines 
(including references to other parts of the Code of Federal 
Regulations).
    (g) Subpart G of this part and 40 CFR part 1068 describe 
requirements, prohibitions, and other provisions that apply to engine 
manufacturers, equipment manufacturers, owners, operators, rebuilders, 
and all others.
    (h) Subpart H of this part describes how you may generate and use 
emission credits to certify your engines.
    (i) Subpart I of this part contains definitions and other reference 
information.
    202. Section 1051.15 is revised to read as follows:


Sec.  1051.15  Do any other regulation parts apply to me?

    (a) Parts 86 and 1065 of this chapter describe procedures and 
equipment specifications for testing vehicles and engines. Subpart F of 
this part 1051 describes how to apply the provisions of parts 86 and 
1065 of this chapter to determine whether vehicles meet the emission 
standards in this part.
    (b) The requirements and prohibitions of part 1068 of this chapter 
apply to everyone, including anyone who manufactures, imports, 
installs, owns, operates, or rebuilds any of the vehicles subject to 
this part 1051, or vehicles containing these engines. Part 1068 of this 
chapter describes general provisions, including these seven areas:
    (1) Prohibited acts and penalties for manufacturers and others.
    (2) Rebuilding and other aftermarket changes.
    (3) Exclusions and exemptions for certain vehicles and engines.
    (4) Importing vehicles and engines.
    (5) Selective enforcement audits of your production.
    (6) Defect reporting and recall.
    (7) Procedures for hearings.
    (c) Other parts of this chapter apply if referenced in this part.
    203. Section 1051.101 is amended by revising paragraphs (a)(1), 
(a)(2), (c), and (f) to read as follows:


Sec.  1051.101  What emission standards and other requirements must my 
vehicles meet?

    (a) * * *
    (1) The applicable exhaust emission standards in Sec.  1051.103, 
Sec.  1051.105, Sec.  1051.107, or Sec.  1051.145.
    (i) For snowmobiles, see Sec.  1051.103.
    (ii) For off-highway motorcycles, see Sec.  1051.105.
    (iii) For all-terrain vehicles and offroad utility vehicles subject 
to this part, see Sec.  1051.107 and Sec.  1051.145.
    (2) The evaporative emission standards in Sec.  1051.110.
* * * * *
    (c) These standards and requirements apply to all testing, 
including certification, production-line, and in-use testing.
* * * * *
    (f) As described in Sec.  1051.1(a)(4), offroad utility vehicles 
that are subject to this part are subject to the same requirements as 
ATVs.
    204. Section 1051.103 is amended by revising paragraph (a)(1) 
before the table and paragraphs (b) introductory text and (c) 
introductory text to read as follows:


Sec.  1051.103  What are the exhaust emission standards for 
snowmobiles?

    (a) * * *
    (1) Follow Table 1 of this section for exhaust emission standards. 
You may generate or use emission credits under the averaging, banking, 
and trading (ABT) program, as described in subpart H of this part. This 
requires that you specify a family emission limit for each pollutant 
you include in the ABT program for each engine family. These family 
emission limits serve as the emission standards for the engine family 
with respect to all required testing instead of the standards specified 
in this section. An engine family meets emission standards even if its 
family emission limit is higher than the standard, as long as you show 
that the whole averaging set of applicable engine families meet the 
applicable emission standards using emission credits, and the vehicles 
within the family meet the family emission limit. Table 1 also shows 
the maximum value you may specify for a family emission limit, as 
follows:
* * * * *
    (b) The exhaust emission standards in this section apply for 
snowmobiles using the fuel type on which they are designed to operate. 
You must meet the numerical emission standards for hydrocarbons in this 
section based on the following types of hydrocarbon emissions for 
snowmobiles powered by the following fuels:
* * * * *
    (c) Your snowmobiles must meet emission standards over their full 
useful life. The minimum useful life is 8,000 kilometers, 400 hours of 
engine operation, or five calendar years, whichever comes first. You 
must specify a longer useful life in terms of kilometers and hours for 
the engine family if the average service life of your vehicles is 
longer than the minimum value, as follows:
* * * * *
    205. Section 1051.105 is amended by revising paragraph (a)(1) 
before the table and paragraphs (a)(3), (b) introductory text, and (c) 
introductory text to read as follows:


Sec.  1051.105  What are the exhaust emission standards for off-highway 
motorcycles?

    (a) * * *
    (1) Follow Table 1 of this section for exhaust emission standards. 
You may generate or use emission credits under the averaging, banking, 
and trading (ABT) program for HC+NOX and/or CO emissions, as 
described in subpart H of this part. This requires that you specify a 
family emission limit for each pollutant you include in the ABT program 
for each engine family. These family emission limits serve as the 
emission standards for the engine family with respect to all required 
testing instead of the standards specified in this section. An engine 
family meets emission standards even if its family emission limit is 
higher than the standard, as long as you show that the whole averaging 
set of applicable engine families meet the applicable emission 
standards using emission credits, and the vehicles within the family 
meet the family emission limit. The phase-in values specify the 
percentage of your U.S.-directed production that must comply with the 
emission standards for those model years. Calculate this compliance 
percentage based on a simple count of production units within the 
engine family. Table 1 follows:
* * * * *
    (3) You may certify off-highway motorcycles with engines that have 
total displacement of 70 cc or less to the exhaust emission standards 
in Sec.  1051.615 instead of certifying them to the exhaust emission 
standards of this section. Count all such vehicles in the phase-in 
(percent) requirements of this section.
    (b) The exhaust emission standards in this section apply for off-
highway motorcycles using the fuel type on which they are designed to 
operate. You must meet the numerical emission standards for 
hydrocarbons in this section based on the following types of 
hydrocarbon emissions for off-highway

[[Page 54909]]

motorcycles powered by the following fuels:
* * * * *
    (c) Your off-highway motorcycles must meet emission standards over 
their full useful life. For off-highway motorcycles with engines that 
have total displacement greater than 70 cc, the minimum useful life is 
10,000 kilometers or five years, whichever comes first. For off-highway 
motorcycles with engines that have total displacement of 70 cc or less, 
the minimum useful life is 5,000 kilometers or five years, whichever 
comes first. You must specify a longer useful life for the engine 
family in terms of kilometers if the average service life of your 
vehicles is longer than the minimum value, as follows:
* * * * *
    206. Section 1051.107 is amended by revising paragraphs (a), (b) 
introductory text, and (c) introductory text to read as follows:


Sec.  1051.107  What are the exhaust emission standards for all-terrain 
vehicles (ATVs) and offroad utility vehicles?

* * * * *
    (a) Apply the exhaust emission standards in this section by model 
year. Measure emissions with the ATV test procedures in subpart F of 
this part.
    (1) Follow Table 1 of this section for exhaust emission standards. 
You may generate or use emission credits under the averaging, banking, 
and trading (ABT) program for HC+NOX emissions, as described 
in subpart H of this part. This requires that you specify a family 
emission limit for each pollutant you include in the ABT program for 
each engine family. These family emission limits serve as the emission 
standards for the engine family with respect to all required testing 
instead of the standards specified in this section. An engine family 
meets emission standards even if its family emission limit is higher 
than the standard, as long as you show that the whole averaging set of 
applicable engine families meet the applicable emission standards using 
emission credits, and the vehicles within the family meet the family 
emission limit. Table 1 also shows the maximum value you may specify 
for a family emission limit. The phase-in values in the table specify 
the percentage of your total U.S.-directed production that must comply 
with the emission standards for those model years. Calculate this 
compliance percentage based on a simple count of production units 
within the engine family. This applies to your total production of ATVs 
and offroad utility vehicles that are subject to the standards of this 
part; including both ATVs and offroad utility vehicles subject to the 
standards of this section and ATVs and offroad utility vehicles 
certified to the standards of other sections in this part 1051 (such as 
Sec.  1051.615, but not including vehicles certified under other parts 
in this chapter (such as 40 CFR part 90). Table 1 follows:

                     Table 1 of Sec.   1051.107.--Exhaust Emission Standards for ATVs (g/km)
----------------------------------------------------------------------------------------------------------------
                                                                 Emission standards     Maximum allowable family
                                                   Phase-in  --------------------------      emission limits
            Phase                 Model year      (percent)                            -------------------------
                                                                 HC+NOX         CO         HC+NOX         CO
----------------------------------------------------------------------------------------------------------------
Phase 1......................  2006............           50          1.5           35         20.0  ...........
                               2007 and later..          100          1.5           35         20.0
----------------------------------------------------------------------------------------------------------------

    (2) You may certify ATVs with engines that have total displacement 
of less than 100 cc to the exhaust emission standards in Sec.  1051.615 
instead of certifying them to the exhaust emission standards of this 
section. Count all such vehicles in the phase-in (percent) requirements 
of this section.
    (b) The exhaust emission standards in this section apply for ATVs 
using the fuel type on which they are designed to operate. You must 
meet the numerical emission standards for hydrocarbons in this section 
based on the following types of hydrocarbon emissions for ATVs powered 
by the following fuels:
* * * * *
    (c) Your ATVs must meet emission standards over their full useful 
life (Sec.  1051.240 describes how to use deterioration factors to show 
this). For ATVs with engines that have total displacement of 100 cc or 
greater, the minimum useful life is 10,000 kilometers, 1000 hours of 
engine operation, or five years, whichever comes first. For ATVs with 
engines that have total displacement of less than 100 cc, the minimum 
useful life is 5,000 kilometers, 500 hours of engine operation, or five 
years, whichever comes first. You must specify a longer useful life for 
the engine family in terms of kilometers and hours if the average 
service life of your vehicles is longer than the minimum value, as 
follows:
* * * * *
    207. Section 1051.110 is amended by revising paragraph (a) to read 
as follows:


Sec.  1051.110  What evaporative emission standards must my vehicles 
meet?

* * * * *
    (a) Beginning with the 2008 model year, permeation emissions from 
your vehicle's fuel tank(s) may not exceed 1.5 grams per square-meter 
per day when measured with the test procedures for tank permeation in 
subpart F of this part. You may generate or use emission credits under 
the averaging, banking, and trading (ABT) program, as described in 
subpart H of this part.
* * * * *
    208. Section 1051.115 is amended by removing and reserving 
paragraph (b) and revising paragraphs (a), (c), and (f) to read as 
follows:


Sec.  1051.115  What other requirements must my vehicles meet?

* * * * *
    (a) Closed crankcase. Crankcase emissions may not be discharged 
directly into the ambient atmosphere from any vehicle.
* * * * *
    (c) Adjustable parameters. Vehicles that have adjustable parameters 
must meet all the requirements of this part for any adjustment in the 
physically adjustable range. Note that parameters that control the air-
fuel ratio may be treated separately under paragraph (d) of this 
section. An operating parameter is not considered adjustable if you 
permanently seal it or if it is not normally accessible using ordinary 
tools. We may require that you set adjustable parameters to any 
specification within the adjustable range during any testing, including 
certification testing, production-line testing, or in-use testing.
* * * * *
    (f) Defeat devices. You may not equip your vehicles with a defeat 
device. A defeat device is an auxiliary emission-control device that 
reduces the effectiveness of emission controls under conditions that 
the vehicle may reasonably be expected to encounter during normal 
operation and use. This

[[Page 54910]]

does not apply to auxiliary emission-control devices you identify in 
your certification application if any of the following is true:
    (1) The conditions of concern were substantially included in the 
applicable test procedures described in subpart F of this part.
    (2) You show your design is necessary to prevent vehicle damage or 
accidents.
    (3) The reduced effectiveness applies only to starting the engine.
* * * * *
    209. Section 1051.120 is revised to read as follows:


Sec.  1051.120  What emission-related warranty requirements apply to 
me?

    (a) General requirements. You must warrant to the ultimate 
purchaser and each subsequent purchaser that the new engine, including 
all parts of its emission-control system, meets two conditions:
    (1) It is designed, built, and equipped so it conforms at the time 
of sale to the ultimate purchaser with the requirements of this part.
    (2) It is free from defects in materials and workmanship that may 
keep it from meeting these requirements.
    (b) Warranty period. Your emission-related warranty must be valid 
for at least 50 percent of the vehicle's minimum useful life in 
kilometers or hours of engine operation (where applicable), or at least 
30 months, whichever comes first. You may offer an emission-related 
warranty more generous than we require. The emission-related warranty 
for the engine may not be shorter than any published warranty you offer 
without charge for the engine. Similarly, the emission-related warranty 
for any component may not be shorter than any published warranty you 
offer without charge for that component. If you provide an extended 
warranty to individual owners for any components covered in paragraph 
(c) of this section for an additional charge, your emission-related 
warranty must cover those components for those owners to the same 
degree. If a vehicle has no odometer, base warranty periods in this 
paragraph (b) only on the vehicle's age (in years). The warranty period 
begins when the engine is placed into service.
    (c) Components covered. The emission-related warranty covers all 
components whose failure would increase an engine's emissions of any 
pollutant. This includes components listed in 40 CFR part 1068, 
Appendix I, and components from any other system you develop to control 
emissions. The emission-related warranty covers these components even 
if another company produces the component. Your emission-related 
warranty does not cover components whose failure would not increase an 
engine's emissions of any pollutant.
    (d) Limited applicability. You may deny warranty claims under this 
section if the operator caused the problem through improper maintenance 
or use, as described in 40 CFR 1068.115. You may ask us to allow you to 
exclude from your emission-related warranty certified vehicles that 
have been used significantly for competition, especially certified 
motorcycles that meet at least four of the criteria in Sec.  
1051.620(b)(1).
    (e) Owners manual. Describe in the owners manual the emission-
related warranty provisions from this section that apply to the engine.
    210. Section 1051.125 is revised to read as follows:


Sec.  1051.125  What maintenance instructions must I give to buyers?

    Give the ultimate purchaser of each new vehicle written 
instructions for properly maintaining and using the vehicle, including 
the emission-control system. The maintenance instructions also apply to 
service accumulation on your emission-data vehicles, as described in 
Sec.  1051.240, Sec.  1051.245, and 40 CFR part 1065.
    (a) Critical emission-related maintenance. Critical emission-
related maintenance includes any adjustment, cleaning, repair, or 
replacement of critical emission-related components. This may also 
include additional emission-related maintenance that you determine is 
critical if we approve it in advance. You may schedule critical 
emission-related maintenance on these components if you meet the 
following conditions:
    (1) You demonstrate that the maintenance is reasonably likely to be 
done at the recommended intervals on in-use vehicles. We will accept 
scheduled maintenance as reasonably likely to occur if you satisfy any 
of the following conditions:
    (i) You present data showing that, if a lack of maintenance 
increases emissions, it also unacceptably degrades the vehicle's 
performance.
    (ii) You present survey data showing that at least 80 percent of 
vehicles in the field get the maintenance you specify at the 
recommended intervals.
    (iii) You provide the maintenance free of charge and clearly say so 
in maintenance instructions for the customer.
    (iv) You otherwise show us that the maintenance is reasonably 
likely to be done at the recommended intervals.
    (2) You may not schedule critical emission-related maintenance 
within the minimum useful life period for aftertreatment devices, 
pulse-air valves, fuel injectors, oxygen sensors, electronic control 
units, superchargers, or turbochargers.
    (b) Recommended additional maintenance. You may recommend any 
additional amount of maintenance on the components listed in paragraph 
(a) of this section, as long as you state clearly that these 
maintenance steps are not necessary to keep the emission-related 
warranty valid. If operators do the maintenance specified in paragraph 
(a) of this section, but not the recommended additional maintenance, 
this does not allow you to disqualify those vehicles from in-use 
testing or deny a warranty claim. Do not take these maintenance steps 
during service accumulation on your emission-data vehicles.
    (c) Special maintenance. You may specify more frequent maintenance 
to address problems related to special situations, such as atypical 
vehicle operation. You must clearly state that this additional 
maintenance is associated with the special situation you are 
addressing.
    (d) Noncritical emission-related maintenance. You may schedule any 
amount of emission-related inspection or maintenance that is not 
covered by paragraph (a) of this section, as long as you state in the 
owners manual that these steps are not necessary to keep the emission-
related warranty valid. If operators fail to do this maintenance, this 
does not allow you to disqualify those vehicles from in-use testing or 
deny a warranty claim. Do not take these inspection or maintenance 
steps during service accumulation on your emission-data vehicles.
    (e) Maintenance that is not emission-related. For maintenance 
unrelated to emission controls, you may schedule any amount of 
inspection or maintenance. You may also take these inspection or 
maintenance steps during service accumulation on your emission-data 
vehicles, as long as they are reasonable and technologically necessary. 
This might include adding engine oil, or adjusting chain tension, 
clutch position, or tire pressure. You may perform this nonemission-
related maintenance on emission-data vehicles at the least frequent 
intervals that you recommend to the ultimate purchaser (but not the 
intervals recommended for severe service).
    (f) Source of parts and repairs. State clearly on the first page of 
your written maintenance instructions that a repair shop or person of 
the owner's choosing may maintain, replace, or repair emission-control 
devices and systems.

[[Page 54911]]

Your instructions may not require components or service identified by 
brand, trade, or corporate name. Also, do not directly or indirectly 
condition your warranty on a requirement that the vehicle be serviced 
by your franchised dealers or any other service establishments with 
which you have a commercial relationship. You may disregard the 
requirements in this paragraph (f) if you do one of two things:
    (1) Provide a component or service without charge under the 
purchase agreement.
    (2) Get us to waive this prohibition in the public's interest by 
convincing us the vehicle will work properly only with the identified 
component or service.
    (g) Payment for scheduled maintenance. Owners are responsible for 
properly maintaining their vehicles. This generally includes paying for 
scheduled maintenance. However, manufacturers must pay for scheduled 
maintenance during the useful life if it meets all the following 
criteria:
    (1) Each affected component was not in general use on similar 
vehicles before the 2006 model year.
    (2) The primary function of each affected component is to reduce 
emissions.
    (3) The cost of the scheduled maintenance is more than 2 percent of 
the price of the vehicle.
    (4) Failure to perform the maintenance would not cause clear 
problems that would significantly degrade the vehicle's performance.
    (h) Owners manual. Explain the owner's responsibility for proper 
maintenance in the owners manual.
    211. Section 1051.130 is revised to read as follows:


Sec.  1051.130  What installation instructions must I give to vehicle 
manufacturers?

    (a) If you sell an engine for someone else to install in a piece of 
nonroad equipment, give the engine installer instructions for 
installing it consistent with the requirements of this part. Include 
all information necessary to ensure that an engine will be installed in 
its certified configuration.
    (b) Make sure these instructions have the following information:
    (1) Include the heading: ``Emission-related installation 
instructions''.
    (2) State: ``Failing to follow these instructions when installing a 
certified engine in a piece of nonroad equipment violates federal law 
(40 CFR 1068.105(b)), subject to fines or other penalties as described 
in the Clean Air Act.''.
    (3) Describe the instructions needed to properly install the 
exhaust system and any other components. Include instructions 
consistent with the requirements of Sec.  1051.205(r).
    (4) Describe the steps needed to comply with the evaporative 
emission standards in Sec.  1051.110.
    (5) Describe any limits on the range of applications needed to 
ensure that the engine operates consistently with your application for 
certification. For example, if your engines are certified only to the 
snowmobile standards, tell vehicle manufacturers not to install the 
engines in other vehicles.
    (6) Describe any other instructions to make sure the installed 
engine will operate according to design specifications in your 
application for certification. This may include, for example, 
instructions for installing aftertreatment devices when installing the 
engines.
    (7) State: ``If you install the engine in a way that makes the 
engine's emission control information label hard to read during normal 
engine maintenance, you must place a duplicate label on the vehicle, as 
described in 40 CFR 1068.105.''.
    (c) You do not need installation instructions for engines you 
install in your own vehicles.
    (d) Provide instructions in writing or in an equivalent format. For 
example, you may post instructions on a publicly available website for 
downloading or printing. If you do not provide the instructions in 
writing, explain in your application for certification how you will 
ensure that each installer is informed of the installation 
requirements.
    212. Section 1051.135 is revised to read as follows:


Sec.  1051.135  How must I label and identify the vehicles I produce?

    Each of your vehicles must have three labels: a vehicle 
identification number as described in paragraph (a) of this section, an 
emission control information label as described in paragraphs (b) 
through (e) of this section, and a consumer information label as 
described in paragraph (g) of this section.
    (a) Assign each vehicle a unique identification number and 
permanently affix, engrave, or stamp it on the vehicle in a legible 
way.
    (b) At the time of manufacture, affix a permanent and legible 
emission control information label identifying each vehicle. The label 
must be--
    (1) Attached so it is not removable without being destroyed or 
defaced.
    (2) Secured to a part of the vehicle (or engine) needed for normal 
operation and not normally requiring replacement.
    (3) Durable and readable for the vehicle's entire life.
    (4) Written in English.
    (c) The label must--
    (1) Include the heading ``EMISSION CONTROL INFORMATION''.
    (2) Include your full corporate name and trademark. You may 
identify another company and use its trademark instead of yours if you 
comply with the provisions of Sec.  1051.645.
    (3) Include EPA's standardized designation for the exhaust and 
evaporative engine families, as described in Sec.  1051.230.
    (4) State the engine's displacement (in liters) and maximum engine 
power. You may omit this from the emission control information label if 
the vehicle is permanently labeled with a unique model name that 
corresponds to a specific displacement or power configuration. Also, 
you may omit displacement from the label if all the engines in the 
engine family have the same per-cylinder displacement and total 
displacement.
    (5) State: ``THIS VEHICLE IS CERTIFIED TO OPERATE ON [specify 
operating fuel or fuels].''.
    (6) State the date of manufacture [MONTH and YEAR]. You may omit 
this from the label if you keep a record of the engine-manufacture 
dates and provide it to us upon request, or if you stamp the date on 
the engine and print it in the owners manual.
    (7) State the exhaust emission standards or FELs to which the 
vehicles are certified.
    (8) Identify the emission-control system. Use terms and 
abbreviations consistent with SAE J1930 (incorporated by reference in 
Sec.  1051.810). You may omit this information from the label if there 
is not enough room for it and you put it in the owners manual instead.
    (9) List specifications and adjustments for engine tuneups; show 
the proper position for the transmission during tuneup and state which 
accessories should be operating.
    (10) Identify any requirements for fuel and lubricants. You may 
omit this information from the label if there is not enough room for it 
and you put it in the owners manual instead.
    (11) State the useful life for your engine family if it is 
different than the minimum value.
    (12) State: ``THIS VEHICLE MEETS U.S. EPA REGULATIONS FOR [MODEL 
YEAR] [SNOWMOBILES or OFF-ROAD MOTORCYCLES or ATVs or OFFROAD UTILITY 
VEHICLES].''.
    (d) You may add information to the emission control information 
label to identify other emission standards that the vehicle meets or 
does not meet (such as California standards). You may also add other 
information to ensure that the

[[Page 54912]]

engine will be properly maintained and used.
    (e) You may ask us to approve modified labeling requirements in 
this part 1051 if you show that it is necessary or appropriate. We will 
approve your request if your alternate label is consistent with the 
requirements of this part.
    (f) If you obscure the engine label while installing the engine in 
the equipment, you must place a duplicate label on the equipment. If 
others install your engine in their equipment in a way that obscures 
the engine label, we require them to add a duplicate label on the 
equipment (see 40 CFR 1068.105); in that case, give them the number of 
duplicate labels they request and keep the following records for at 
least five years:
    (1) Written documentation of the request from the equipment 
manufacturer.
    (2) The number of duplicate labels you send and the date you sent 
them.
    (g) Label every vehicle certified under this part with a removable 
hang-tag showing its emission characteristics relative to other models. 
The label should be attached securely to the vehicle before it is 
offered for sale in such a manner that it would not be accidentally 
removed prior to sale. Use the applicable equations of this paragraph 
(g) to determine the normalized emission rate (NER) from the FEL for 
your vehicle. If the vehicle is certified without using the averaging 
provisions of subpart H, use the final deteriorated emission level. 
Round the resulting normalized emission rate for your vehicle to one 
decimal place. We may specify a standardized format for labels. At a 
minimum, the tag should include: the manufacturer's name, vehicle model 
name, engine description (500 cc two-stroke with DFI), the NER, and a 
brief explanation of the scale (for example, note that 0 is the 
cleanest and 10 is the least clean).
    (1) For snowmobiles, use the following equation:

NER = 16.61 x log(2.667 x HC + CO) - 38.22


Where:

    HC and CO are the cycle-weighted FELs (or emission rates) for 
hydrocarbons and carbon monoxide in g/kW-hr.

    (2)(i) For off-highway motorcycles certified to the standards in 
Sec.  1051.105, use the equations specified below.
    (A) If the vehicle has HC + NOX emissions less than or 
equal to 2.0 g/km, use the following equation:

NER = 2.500 x (HC + NOX)


Where:

    HC + NOX is the FEL (or the sum of the cycle-weighted 
emission rates) for hydrocarbons and oxides of nitrogen in g/km.

    (B) If the vehicle has HC + NOX emissions greater than 
2.0 g/km, use the following equation:

NER = 5.000 x log(HC + NOX) + 3.495


Where:

    HC + NOX is the FEL (or the sum of the cycle-weighted 
emission rates) for hydrocarbons and oxides of nitrogen in g/km.

    (ii) For off-highway motorcycles certified to the standards in 
Sec.  1051.615(b), use the following equation:

NER = 8.782 x log(HC + NOX) - 5.598


Where:

    HC + NOX is the FEL (or the sum of the cycle-weighted 
emission rates) for hydrocarbons and oxides of nitrogen in g/kW-hr.

    (3)(i) For ATVs certified to the standards in Sec.  1051.107, use 
the equations specified below.
    (A) If the vehicle has HC + NOX emissions less than or 
equal to 1.5 g/km, use the following equation:

NER = 3.333 x (HC + NOX)


Where:

    HC + NOX is the FEL (or the sum of the cycle-weighted 
emission rates) for hydrocarbons and oxides of nitrogen in g/km.

    (B) If the vehicle has HC + NOX emissions greater than 
1.5 g/km, use the following equation:

NER = 4.444 x log(HC + NOX) + 4.217


Where:

    HC + NOX is the FEL (or the sum of the cycle-weighted 
emission rates) for hydrocarbons and oxides of nitrogen in g/km.

    (ii) For ATVs certified to the standards in Sec.  1051.615(a), use 
the following equation:

NER = 8.782 x log(HC + NOX) - 7.277


Where:

    HC + NOX is the FEL (or the sum of the cycle-weighted 
emission rates) for hydrocarbons and oxides of nitrogen in g/kW-hr.

    213. Section 1051.145 is amended by removing and reserving 
paragraph (c), adding paragraphs (a)(3)(v) and (a)(3)(vi), and revising 
paragraphs (b)(3) and (e) to read as follows:


Sec.  1051.145  What provisions apply only for a limited time?

* * * * *
    (a) * * *
    (3) * * *
    (v) If your engines do not meet the criteria listed in paragraph 
(a) of this section, they will be subject to the provisions of this 
part. Introducing these engines into commerce without a valid exemption 
or certificate of conformity violates the prohibitions in 40 CFR 
1068.101.
    (vi) Engines exempted under this paragraph (a)(3) are subject to 
all the requirements affecting engines under 40 CFR part 90. The 
requirements and restrictions of 40 CFR part 90 apply to anyone 
manufacturing these engines, anyone manufacturing equipment that uses 
these engines, and all other persons in the same manner as other 
engines subject to 40 CFR part 90.
* * * * *
    (b) * * *
    (3) For ATVs certified to the standards in this paragraph (b), use 
the following equations to determine the normalized emission rate 
required by Sec.  1051.135(g):
    (i) For engines above 225 cc, use the following equation:

NER = 9.898 x log(HC + NOX) - 4.898


Where:

    HC + NOX is the sum of the cycle-weighted emission rates 
for hydrocarbons and oxides of nitrogen in g/kW-hr.

    (ii) For engines below 225 cc, use the following equation:

NER = 9.898 x log((HC + NOX) x 0.83) - 4.898


Where:
    HC + NOX is the sum of the cycle-weighted emission rates 
for hydrocarbons and oxides of nitrogen in g/kW-hr.
* * * * *
    (e) Raw sampling procedures. You may use the raw sampling 
procedures described in 40 CFR part 91, subparts D and E, for emission 
testing certain vehicles as follows:
    (1) Snowmobile. You may use raw sampling for snowmobiles before the 
2010 model year. For 2010 and later model years, you may use these 
procedures if you show that they produce emission measurements 
equivalent to the otherwise specified test procedures.
    (2) ATV. You may use raw sampling for ATVs certified to the 
standard in Sec.  1051.615 before the 2011 model year. You may use raw 
sampling for ATVs certified to the standard in Sec.  1051.107 before 
the 2009 model year. For later model years, you may use these 
procedures if you show that they produce emission measurements

[[Page 54913]]

equivalent to the otherwise specified test procedures.
* * * * *
    214. Section 1051.201 is revised to read as follows:


Sec.  1051.201  What are the general requirements for obtaining a 
certificate of conformity?

    (a) You must send us a separate application for a certificate of 
conformity for each engine family. A certificate of conformity is valid 
from the indicated effective date until December 31 of the model year 
for which it is issued.
    (b) The application must contain all the information required by 
this part and must not include false or incomplete statements or 
information (see Sec.  1051.255).
    (c) We may ask you to include less information than we specify in 
this subpart, as long as you maintain all the information required by 
Sec.  1051.250.
    (d) You must use good engineering judgment for all decisions 
related to your application (see 40 CFR 1068.5).
    (e) An authorized representative of your company must approve and 
sign the application.
    (f) See Sec.  1051.255 for provisions describing how we will 
process your application.
    (g) We may require you to deliver your test vehicles or engines to 
a facility we designate for our testing (see Sec.  1051.235(c)).
    215. Section 1051.205 is revised to read as follows:


Sec.  1051.205  What must I include in my application?

    This section specifies the information that must be in your 
application, unless we ask you to include less information under Sec.  
1051.201(c). We may require you to provide additional information to 
evaluate your application.
    (a) Describe the engine family's specifications and other basic 
parameters of the vehicle's design and emission controls. List the fuel 
type on which your engines are designed to operate (for example, 
gasoline, liquefied petroleum gas, methanol, or natural gas). List 
vehicle configurations and model names that are included in the engine 
family.
    (b) Explain how the emission-control system operates. Describe the 
evaporative emission controls. Also describe in detail all system 
components for controlling exhaust emissions, including all auxiliary-
emission control devices (AECDs) and all fuel-system components you 
will install on any production or test vehicle or engine. Identify the 
part number of each component you describe. For this paragraph (b), 
treat as separate AECDs any devices that modulate or activate 
differently from each other. Include all the following:
    (1) Give a general overview of the engine, the emission-control 
strategies, and all AECDs.
    (2) Describe each AECD's general purpose and function.
    (3) Identify the parameters that each AECD senses (including 
measuring, estimating, calculating, or empirically deriving the 
values). Include vehicle-based parameters and state whether you 
simulate them during testing with the applicable procedures.
    (4) Describe the purpose for sensing each parameter.
    (5) Identify the location of each sensor the AECD uses.
    (6) Identify the threshold values for the sensed parameters that 
activate the AECD.
    (7) Describe the parameters that the AECD modulates (controls) in 
response to any sensed parameters, including the range of modulation 
for each parameter, the relationship between the sensed parameters and 
the controlled parameters and how the modulation achieves the AECD's 
stated purpose. Use graphs and tables, as necessary.
    (8) Describe each AECD's specific calibration details. This may be 
in the form of data tables, graphical representations, or some other 
description.
    (9) Describe the hierarchy among the AECDs when multiple AECDs 
sense or modulate the same parameter. Describe whether the strategies 
interact in a comparative or additive manner and identify which AECD 
takes precedence in responding, if applicable.
    (10) Explain the extent to which the AECD is included in the 
applicable test procedures specified in subpart F of this part.
    (11) Do the following additional things for AECDs designed to 
protect engines or vehicles:
    (i) Identify the engine and/or vehicle design limits that make 
protection necessary and describe any damage that would occur without 
the AECD.
    (ii) Describe how each sensed parameter relates to the protected 
components' design limits or those operating conditions that cause the 
need for protection.
    (iii) Describe the relationship between the design limits/
parameters being protected and the parameters sensed or calculated as 
surrogates for those design limits/parameters, if applicable.
    (iv) Describe how the modulation by the AECD prevents engines and/
or equipment from exceeding design limits.
    (v) Explain why it is necessary to estimate any parameters instead 
of measuring them directly and describe how the AECD calculates the 
estimated value, if applicable.
    (vi) Describe how you calibrate the AECD modulation to activate 
only during conditions related to the stated need to protect components 
and only as needed to sufficiently protect those components in a way 
that minimizes the emission impact.
    (c) [Reserved]
    (d) Describe the vehicles or engines you selected for testing and 
the reasons for selecting them.
    (e) Describe the test equipment and procedures that you used, 
including any special or alternate test procedures you used (see Sec.  
1051.501).
    (f) Describe how you operated the emission-data vehicle before 
testing, including the duty cycle and the extent of engine operation 
used to stabilize emission levels. Explain why you selected the method 
of service accumulation. Describe any scheduled maintenance you did.
    (g) List the specifications of the test fuel to show that it falls 
within the required ranges we specify in 40 CFR part 1065.
    (h) Identify the engine family's useful life.
    (i) Include the maintenance instructions you will give to the 
ultimate purchaser of each new vehicle (see Sec.  1051.125).
    (j) Include the emission-related installation instructions you will 
provide if someone else installs your engines in a vehicle (see Sec.  
1051.130).
    (k) Describe the labels you create to meet the requirements of 
Sec.  1051.135.
    (l) Identify the exhaust emission standards or FELs to which you 
are certifying engines in the engine family.
    (m) Identify the engine family's deterioration factors and describe 
how you developed them (see Sec.  1051.245). Present any emission test 
data you used for this.
    (n) State that you operated your emission-data vehicles as 
described in the application (including the test procedures, test 
parameters, and test fuels) to show you meet the requirements of this 
part.
    (o) Present emission data to show that you meet emission standards, 
as follows:
    (1) Present emission data for hydrocarbons (such as NMHC or THCE, 
as applicable), NOX, and CO on an emission-data vehicle to 
show your vehicles meet the applicable exhaust emission standards we 
specify in

[[Page 54914]]

subpart B of this part. Show emission figures before and after applying 
deterioration factors for each vehicle or engine. If we specify more 
than one grade of any fuel type (for example, a summer grade and winter 
grade of gasoline), you need to submit test data only for one grade, 
unless the regulations of this part specify otherwise for your engine.
    (2) Present evaporative test data for HC to show your vehicles meet 
the evaporative emission standards we specify in subpart B of this 
part. Show emission figures before and after applying deterioration 
factors for each vehicle or engine, where applicable. If you did not 
perform the testing, identify the source of the test data.
    (3) Note that Sec.  1051.235 and Sec.  1051.245 allow you to submit 
an application in certain cases without new emission data.
    (p) Report all test results, including those from invalid tests or 
from any other tests, whether or not they were conducted according to 
the test procedures of subpart F of this part. If you measure 
CO2, report those emission levels. We may ask you to send 
other information to confirm that your tests were valid under the 
requirements of this part and 40 CFR part 1065.
    (q) Describe all adjustable operating parameters (see Sec.  
1051.115(e)), including production tolerances. Include the following in 
your description of each parameter:
    (1) The nominal or recommended setting.
    (2) The intended physically adjustable range.
    (3) The limits or stops used to establish adjustable ranges.
    (4) Information showing why the limits, stops, or other means of 
inhibiting adjustment are effective in preventing adjustment of 
parameters on in-use engines to settings outside your intended 
physically adjustable ranges.
    (r) Confirm that your emission-related installation instructions 
specify how to ensure that sampling of exhaust emissions will be 
possible after engines are installed in equipment and placed in 
service. If this cannot be done by simply adding a 20-centimeter 
extension to the exhaust pipe, show how to sample exhaust emissions in 
a way that prevents diluting the exhaust sample with ambient air.
    (s) Unconditionally certify that all the vehicles and/or engines in 
the engine family comply with the requirements of this part, other 
referenced parts of the CFR, and the Clean Air Act.
    (t) Include estimates of U.S.-directed production volumes.
    (u) Include the information required by other subparts of this 
part. For example, include the information required by Sec.  1051.725 
if you participate in the ABT program.
    (v) Include other applicable information, such as information 
specified in this part or part 1068 of this chapter related to requests 
for exemptions.
    216. Section 1051.210 is revised to read as follows:


Sec.  1051.210  May I get preliminary approval before I complete my 
application?

    If you send us information before you finish the application, we 
will review it and make any appropriate determinations, especially for 
questions related to engine family definitions, auxiliary emission-
control devices, deterioration factors, testing for service 
accumulation, and maintenance. Decisions made under this section are 
considered to be preliminary approval, subject to final review and 
approval. If you request preliminary approval related to the upcoming 
model year or the model year after that, we will make best-efforts to 
make the appropriate determinations as soon as practicable. We will 
generally not provide preliminary approval related to a future model 
year more than two years ahead of time.


Sec.  1051.215  [Removed]

    217. Section 1051.215 is removed.
    218. Section 1051.220 is revised to read as follows:


Sec.  1051.220  How do I amend the maintenance instructions in my 
application?

    You may amend your emission-related maintenance instructions after 
you submit your application for certification, as long as the amended 
instructions remain consistent with the provisions of Sec.  1051.125. 
You must send the Designated Compliance Officer a request to amend your 
application for certification for an engine family if you want to 
change the emission-related maintenance instructions in a way that 
could affect emissions. In your request, describe the proposed changes 
to the maintenance instructions. We will disapprove your request if we 
determine that the amended instructions are inconsistent with 
maintenance you performed on emission-data vehicles.
    (a) If you are decreasing the specified maintenance, you may 
distribute the new maintenance instructions to your customers 30 days 
after we receive your request, unless we disapprove your request. We 
may approve a shorter time or waive this requirement.
    (b) If your requested change would not decrease the specified 
maintenance, you may distribute the new maintenance instructions 
anytime after you send your request. For example, this paragraph (b) 
would cover adding instructions to increase the frequency of a 
maintenance step for engines in severe-duty applications.
    (c) You need not request approval if you are making only minor 
corrections (such as correcting typographical mistakes), clarifying 
your maintenance instructions, or changing instructions for maintenance 
unrelated to emission control.
    219. Section 1051.225 is revised to read as follows:


Sec.  1051.225  How do I amend my application for certification to 
include new or modified vehicles or to change an FEL?

    Before we issue you a certificate of conformity, you may amend your 
application to include new or modified vehicle configurations, subject 
to the provisions of this section. After we have issued your 
certificate of conformity, you may send us an amended application 
requesting that we include new or modified vehicle configurations 
within the scope of the certificate, subject to the provisions of this 
section. You must amend your application if any changes occur with 
respect to any information included in your application.
    (a) You must amend your application before you take any of the 
following actions:
    (1) Add a vehicle (that is, an additional vehicle configuration) to 
an engine family. In this case, the vehicle added must be consistent 
with other vehicles in the engine family with respect to the criteria 
listed in Sec.  1051.230.
    (2) Change a vehicle already included in an engine family in a way 
that may affect emissions, or change any of the components you 
described in your application for certification. This includes 
production and design changes that may affect emissions any time during 
the engine's lifetime.
    (3) Modify an FEL for an engine family, as described in paragraph 
(f) of this section.
    (b) To amend your application for certification, send the 
Designated Compliance Officer the following information:
    (1) Describe in detail the addition or change in the vehicle model 
or configuration you intend to make.
    (2) Include engineering evaluations or data showing that the 
amended engine family complies with all applicable requirements. You 
may do this by

[[Page 54915]]

showing that the original emission-data vehicle is still appropriate 
with respect to showing compliance of the amended family with all 
applicable requirements.
    (3) If the original emission-data vehicle for the engine family is 
not appropriate to show compliance for the new or modified vehicle, 
include new test data showing that the new or modified vehicle meets 
the requirements of this part.
    (c) We may ask for more test data or engineering evaluations. You 
must give us these within 30 days after we request them.
    (d) For engine families already covered by a certificate of 
conformity, we will determine whether the existing certificate of 
conformity covers your new or modified vehicle. You may ask for a 
hearing if we deny your request (see Sec.  1051.820).
    (e) For engine families already covered by a certificate of 
conformity, you may start producing the new or modified vehicle anytime 
after you send us your amended application, before we make a decision 
under paragraph (d) of this section. However, if we determine that the 
affected vehicles do not meet applicable requirements, we will notify 
you to cease production of the vehicles and may require you to recall 
the vehicles at no expense to the owner. Choosing to produce vehicles 
under this paragraph (e) is deemed to be consent to recall all vehicles 
that we determine do not meet applicable emission standards or other 
requirements and to remedy the nonconformity at no expense to the 
owner. If you do not provide information required under paragraph (c) 
of this section within 30 days, you must stop producing the new or 
modified vehicles.
    (f) You may ask to change your FEL in the following cases:
    (1) You may ask to raise your FEL after the start of production. 
You may not apply the higher FEL to engines you have already introduced 
into commerce. Use the appropriate FELs with corresponding sales 
volumes to calculate your average emission level, as described in 
subpart H of this part. In your request, you must demonstrate that you 
will still be able to comply with the applicable average emission 
standards as specified in subparts B and H of this part.
    (2) You may ask to lower the FEL for your engine family after the 
start of production only when you have test data from production 
vehicles indicating that your vehicles comply with the lower FEL. You 
may create a separate subfamily with the lower FEL. Otherwise, you must 
use the higher FEL for the family to calculate your average emission 
level under subpart H of this part.
    (3) If you change the FEL during production, you must include the 
new FEL on the emission control information label for all vehicles 
produced after the change.
    220. Section 1051.230 is revised to read as follows:


Sec.  1051.230  How do I select engine families?

    (a) Divide your product line into families of vehicles that are 
expected to have similar emission characteristics throughout the useful 
life. Except as specified in paragraph (f) of this section, you must 
have separate engine families for meeting exhaust and evaporative 
emissions. Your engine families are limited to a single model year.
    (b) For exhaust emissions, group vehicles in the same engine family 
if they are the same in all the following aspects:
    (1) The combustion cycle.
    (2) The cooling system (water-cooled vs. air-cooled).
    (3) Configuration of the fuel system (for example, port fuel 
injection vs. carburetion).
    (4) Method of air aspiration.
    (5) The number, location, volume, and composition of catalytic 
converters.
    (6) Type of fuel.
    (7) The number, arrangement, and approximate bore diameter of 
cylinders.
    (8) Numerical level of the emission standards that apply to the 
vehicle.
    (c) For evaporative emissions, group vehicles in the same engine 
family if fuel tanks are the same and fuel lines are the same 
considering all the following aspects:
    (1) Wall thickness.
    (2) Type of material (including additives such as pigments, 
plasticizers, and UV inhibitors).
    (3) Emission-control strategy.
    (d) You may subdivide a group of vehicles that is identical under 
paragraph (b) or (c) of this section into different engine families if 
you show the expected emission characteristics are different during the 
useful life.
    (e) You may group vehicles that are not identical with respect to 
the things listed in paragraph (b) or (c) of this section in the same 
engine family, as follows:
    (1) You may group such vehicles in the same engine family if you 
show that their emission characteristics during the useful life will be 
similar.
    (2) If you are a small-volume manufacturer, you may group engines 
from any vehicles subject to the same emission standards into a single 
engine family. This does not change any of the requirements of this 
part for showing that an engine family meets emission standards.
    (f) You may divide your product line into engine families based on 
a combined consideration of exhaust and evaporative emission-control 
systems, consistent with the requirements of this section. This would 
allow you to use a single engine-family designation for each engine 
family instead of having separate engine-family designations for 
exhaust and evaporative emission-control systems for each model.
    221. Section 1051.235 is revised to read as follows:


Sec.  1051.235  What emission testing must I perform for my application 
for a certificate of conformity?

    This section describes the emission testing you must perform to 
show compliance with the emission standards in subpart B of this part.
    (a) Test your emission-data vehicles using the procedures and 
equipment specified in subpart F of this part. Where specifically 
required or allowed, test the engine instead of the vehicle. For 
evaporative emissions, test the fuel system components separate from 
the vehicle.
    (b) Select from each engine family an emission-data vehicle, and a 
fuel system for each fuel type with a configuration that is most likely 
to exceed the emission standards, using good engineering judgment. 
Consider the emission levels of all exhaust constituents over the full 
useful life of the vehicle.
    (c) We may measure emissions from any of your test vehicles or 
engines (or any other vehicles or engines from the engine family), as 
follows:
    (1) We may decide to do the testing at your plant or any other 
facility. If we do this, you must deliver the test vehicle or engine to 
a test facility we designate. The test vehicle or engine you provide 
must include appropriate manifolds, after treatment devices, electronic 
control units, and other emission-related components not normally 
attached directly to the engine block. If we do the testing at your 
plant, you must schedule it as soon as possible and make available the 
instruments, personnel, and equipment we need.
    (2) If we measure emissions on one of your test vehicles or 
engines, the results of that testing become the official emission 
results. Unless we later invalidate these data, we may decide not to 
consider your data in determining if your engine family meets 
applicable requirements.
    (3) Before we test one of your vehicles or engines, we may set its 
adjustable

[[Page 54916]]

parameters to any point within the physically adjustable ranges (see 
Sec.  1051.115(c)).
    (4) Before we test one of your vehicles or engines, we may 
calibrate it within normal production tolerances for anything we do not 
consider an adjustable parameter.
    (d) You use previously generated emission data in the following 
cases:
    (1) You may ask to use emission data from a previous model year 
instead of doing new tests, but only if all the following are true:
    (i) The engine family from the previous model year differs from the 
current engine family only with respect to model year.
    (ii) The emission-data vehicle from the previous model year remains 
the appropriate emission-data vehicle under paragraph (b) of this 
section.
    (iii) The data show that the emission-data vehicle would meet all 
the requirements that apply to the engine family covered by the 
application for certification.
    (2) You may submit emission data for equivalent engine families 
performed to show compliance with other standards (such as California 
standards) instead of doing new tests, but only if the data show that 
the test vehicle or engine would meet all of this part's requirements.
    (3) You may submit evaporative emission data measured by a fuel 
system supplier. We may require you to verify that the testing was 
conducted in accordance with the applicable regulations.
    (e) We may require you to test a second vehicle or engine of the 
same or different configuration in addition to the vehicle or engine 
tested under paragraph (b) of this section.
    (f) If you use an alternate test procedure under 40 CFR 1065.10 and 
later testing shows that such testing does not produce results that are 
equivalent to the procedures specified in subpart F of this part, we 
may reject data you generated using the alternate procedure.
    (g) If you are a small-volume manufacturer, you may certify by 
design on the basis of preexisting exhaust emission data for similar 
technologies and other relevant information, and in accordance with 
good engineering judgment. In those cases, you are not required to test 
your vehicles. This is called ``design-certification'' or ``certifying 
by design.'' To certify by design, you must show that the technology 
used on your engines is sufficiently similar to the previously tested 
technology that a person reasonably familiar with emission-control 
technology would believe that your engines will comply with the 
emission standards.
    (h) For fuel tanks that are certified based on permeability 
treatments for plastic fuel tanks, you do not need to test each engine 
family. However, you must use good engineering judgment to determine 
permeation rates for the tanks. This requires that more than one fuel 
tank be tested for each set of treatment conditions. You may not use 
test data from a given tank for any other tanks that have thinner 
walls. You may, however, use test data from a given tank for other 
tanks that have thicker walls. This applies to both low-hour (i.e., 
baseline testing) and durability testing. Note that Sec.  1051.245 
allows you to use design-based certification instead of generating new 
emission data.
    222. Section 1051.240 is revised to read as follows:


Sec.  1051.240  How do I demonstrate that my engine family complies 
with exhaust emission standards?

    (a) For purposes of certification, your engine family is considered 
in compliance with the applicable numerical exhaust emission standards 
in subpart B of this part if all emission-data vehicles representing 
that family have test results showing deteriorated emission levels at 
or below these standards. (Note: if you participate in the ABT program 
in subpart H of this part, your FELs are considered to be the 
applicable emission standards with which you must comply.)
    (b) Your engine family is deemed not to comply if any emission-data 
vehicle representing that family has test results showing a 
deteriorated emission level above an applicable FEL or emission 
standard from subpart B of this part for any pollutant.
    (c) To compare emission levels from the emission-data vehicle with 
the applicable emission standards, apply deterioration factors to the 
measured emission levels. Section 1051.243 specifies how to test your 
vehicle to develop deterioration factors that represent the 
deterioration expected in emissions over your vehicle's full useful 
life. Your deterioration factors must take into account any available 
data from in-use testing with similar engines. Small-volume 
manufacturers may use assigned deterioration factors that we establish. 
Apply deterioration factors as follows:
    (1) For vehicles that use aftertreatment technology, such as 
catalytic converters, use a multiplicative deterioration factor for 
exhaust emissions. A multiplicative deterioration factor for a 
pollutant is the ratio of exhaust emissions at the end of the useful 
life and exhaust emissions at the low-hour test point. In these cases, 
adjust the official emission results for each tested vehicle or engine 
at the selected test point by multiplying the measured emissions by the 
deterioration factor. If the factor is less than one, use one. 
Multiplicative deterioration factors must be specified to three 
significant figures.
    (2) For vehicles that do not use aftertreatment technology, use an 
additive deterioration factor for exhaust emissions. An additive 
deterioration factor for a pollutant is the difference between exhaust 
emissions at the end of the useful life and exhaust emissions at the 
low-hour test point. In these cases, adjust the official emission 
results for each tested vehicle or engine at the selected test point by 
adding the factor to the measured emissions. If the factor is less than 
zero, use zero. Additive deterioration factors must be specified to one 
more decimal place than the applicable standard.
    (d) Collect emission data using measurements to one more decimal 
place than the applicable standard. Apply the deterioration factor to 
the official emission result, as described in paragraph (c) of this 
section, then round the adjusted figure to the same number of decimal 
places as the emission standard. Compare the rounded emission levels to 
the emission standard for each emission-data vehicle. In the case of 
HC+NOX standards, apply the deterioration factor to each 
pollutant and then add the results before rounding.
    223. A new Sec.  1051.243 is added to read as follows:


Sec.  1051.243  How do I determine deterioration factors from exhaust 
durability testing?

    Establish deterioration factors to determine whether your engines 
will meet emission standards for each pollutant throughout the useful 
life, as described in subpart B of this part and Sec.  1051.240. This 
section describes how to determine deterioration factors, either with 
pre-existing test data or with new emission measurements.
    (a) You may ask us to approve deterioration factors for an engine 
family based on emission measurements from similar vehicles or engines 
if you have already given us these data for certifying other vehicles 
in the same or earlier model years. Use good engineering judgment to 
decide whether the two vehicles or engines are similar. We will approve 
your request if you show us that the emission measurements from other 
vehicles or engines reasonably represent in-use

[[Page 54917]]

deterioration for the engine family for which you have not yet 
determined deterioration factors.
    (b) If you are unable to determine deterioration factors for an 
engine family under paragraph (a) of this section, select vehicles, 
engines, subsystems, or components for testing. Determine deterioration 
factors based on service accumulation and related testing to represent 
the deterioration expected from in-use vehicles over the full useful 
life, as follows:
    (1) You must measure emissions from the emission-data vehicle at a 
low-hour test point and the end of the useful life. You may also test 
at intermediate points.
    (2) Operate the vehicle or engine over a representative duty cycle 
for a period at least as long as the useful life (in hours or 
kilometers). You may operate the vehicle or engine continuously.
    (3) You may perform maintenance on emission-data vehicles as 
described in Sec.  1051.125 and 40 CFR part 1065, subpart E.
    (4) Use a linear least-squares fit of your test data for each 
pollutant to calculate your deterioration factor.
    (5) Use good engineering judgment for all aspects of the effort to 
establish deterioration factors under this paragraph (b).
    (6) You may use other testing methods to determine deterioration 
factors, consistent with good engineering judgment.
    (c) Include the following information in your application for 
certification:
    (1) If you use test data from a different engine family, explain 
why this is appropriate and include all the emission measurements on 
which you base the deterioration factor.
    (2) If you do testing to determine deterioration factors, describe 
the form and extent of service accumulation, including a rationale for 
selecting the service-accumulation period and the method you use to 
accumulate hours.
    224. Section 1051.245 is amended by revising paragraphs (a) 
introductory text, (b), (c), and (d) to read as follows:


Sec.  1051.245  How do I demonstrate that my engine family complies 
with evaporative emission standards?

    (a) For purposes of certification, your engine family is considered 
in compliance with the evaporative emission standards in subpart B of 
this part if you do either of the following:
* * * * *
    (b) Your engine family is deemed not to comply if any fuel tank or 
fuel line representing that family has test results showing a 
deteriorated emission level above the standard.
    (c) To compare emission levels with the emission standards, apply 
deterioration factors to the measured emission levels. For permeation 
emissions, use the following procedures to establish an additive 
deterioration factor, as described in Sec.  1051.240(c)(2):
    (1) Section 1051.515 specifies how to test your fuel tanks to 
develop deterioration factors. Small-volume manufacturers may use 
assigned deterioration factors that we establish. Apply the 
deterioration factors as follows:
    (i) Calculate the deterioration factor from emission tests 
performed before and after the durability tests as described in Sec.  
1051.515(c) and (d), using good engineering judgment. The durability 
tests described in Sec.  1051.515(d) represent the minimum requirements 
for determining a deterioration factor. You may not use a deterioration 
factor that is less than the difference between evaporative emissions 
before and after the durability tests as described in Sec.  1051.515(c) 
and (d).
    (ii) Do not apply the deterioration factor to test results for 
tanks that have already undergone these durability tests.
    (2) Determine the deterioration factor for fuel lines using good 
engineering judgment.
    (d) Collect emission data using measurements to one more decimal 
place than the applicable standard. Apply the deterioration factor to 
the official emission result, as described in paragraph (c) of this 
section, then round the adjusted figure to the same number of decimal 
places as the emission standard. Compare the rounded emission levels to 
the emission standard for each emission-data vehicle.
* * * * *
    225. Section 1051.250 is revised to read as follows:


Sec.  1051.250  What records must I keep and make available to EPA?

    (a) Organize and maintain the following records:
    (1) A copy of all applications and any summary information you send 
us.
    (2) Any of the information we specify in Sec.  1051.205 that you 
were not required to include in your application.
    (3) A detailed history of each emission-data vehicle. For each 
vehicle, describe all of the following:
    (i) The emission-data vehicle's construction, including its origin 
and buildup, steps you took to ensure that it represents production 
vehicles, any components you built specially for it, and all the 
components you include in your application for certification.
    (ii) How you accumulated vehicle or engine operating hours, 
including the dates and the number of hours accumulated.
    (iii) All maintenance, including modifications, parts changes, and 
other service, and the dates and reasons for the maintenance.
    (iv) All your emission tests, including documentation on routine 
and standard tests, as specified in 40 CFR part 1065, and the date and 
purpose of each test.
    (v) All tests to diagnose engine or emission-control performance, 
giving the date and time of each and the reasons for the test.
    (vi) Any other significant events.
    (4) Production figures for each engine family divided by assembly 
plant.
    (5) Keep a list of engine identification numbers for all the 
engines you produce under each certificate of conformity.
    (b) Keep data from routine emission tests (such as test cell 
temperatures and relative humidity readings) for one year after we 
issue the associated certificate of conformity. Keep all other 
information specified in paragraph (a) of this section for eight years 
after we issue your certificate.
    (c) Store these records in any format and on any media, as long as 
you can promptly send us organized, written records in English if we 
ask for them. You must keep these records readily available. We may 
review them at any time.
    (d) Send us copies of any maintenance instructions or explanations 
if we ask for them.
    226. Section 1051.255 is revised to read as follows:


Sec.  1051.255  What decisions may EPA make regarding my certificate of 
conformity?

    (a) If we determine your application is complete and shows that the 
engine family meets all the requirements of this part and the Act, we 
will issue a certificate of conformity for your engine family for that 
model year. We may make the approval subject to additional conditions.
    (b) We may deny your application for certification if we determine 
that your engine family fails to comply with emission standards or 
other requirements of this part or the Act. Our decision may be based 
on a review of all information available to us. If we deny your 
application, we will explain why in writing.
    (c) In addition, we may deny your application or suspend or revoke 
your certificate if you do any of the following:
    (1) Refuse to comply with any testing or reporting requirements.

[[Page 54918]]

    (2) Submit false or incomplete information (paragraph (e) of this 
section applies if this is fraudulent).
    (3) Render inaccurate any test data.
    (4) Deny us from completing authorized activities despite our 
presenting a warrant or court order (see 40 CFR 1068.20). This includes 
a failure to provide reasonable assistance.
    (5) Produce engines for importation into the United States at a 
location where local law prohibits us from carrying out authorized 
activities.
    (6) Fail to supply requested information or amend your application 
to include all engines being produced.
    (7) Take any action that otherwise circumvents the intent of the 
Act or this part.
    (d) We may void your certificate if you do not keep the records we 
require or do not give us information when we ask for it.
    (e) We may void your certificate if we find that you intentionally 
submitted false or incomplete information.
    (f) If we deny your application or suspend, revoke, or void your 
certificate, you may ask for a hearing (see Sec.  1051.820).
    227. The heading for subpart D is revised to read as follows:

Subpart D--Testing Production-line Vehicles and Engines

    228. Section 1051.301 is amended by revising paragraph (a) and 
adding paragraph (h) to read as follows:


Sec.  1051.301  When must I test my production-line vehicles or 
engines?

    (a) If you produce vehicles that are subject to the requirements of 
this part, you must test them as described in this subpart. If your 
vehicle is certified to g/kW-hr standards, then test the engine; 
otherwise, test the vehicle. The provisions of this subpart do not 
apply to small-volume manufacturers.
* * * * *
    (h) Vehicles certified to the following standards are exempt from 
the production-line testing requirements of this subpart if they are 
certified without participating in the averaging, banking, and trading 
program described in subpart H of this part:
    (1) Phase 1 or Phase 2 standards in Sec.  1051.103.
    (2) Phase 1 standards in Sec. Sec.  1051.105.
    (3) Phase 1 standards in Sec.  1051.107.
    (4) The standards in Sec.  1051.615.
    (5) The standards in Sec.  1051.145(b).
    229. Section 1051.305 is amended by revising paragraphs (d)(1), 
(e), (f), and (g) to read as follows:


Sec.  1051.305  How must I prepare and test my production-line vehicles 
or engines?

* * * * *
    (d) * * *
    (1) We may adjust or require you to adjust idle speed outside the 
physically adjustable range as needed only until the vehicle or engine 
has stabilized emission levels (see paragraph (e) of this section). We 
may ask you for information needed to establish an alternate minimum 
idle speed.
* * * * *
    (e) Stabilizing emission levels. Before you test production-line 
vehicles or engines, you may operate the vehicle or engine to stabilize 
the emission levels. Using good engineering judgment, operate your 
vehicles or engines in a way that represents the way they will be used. 
You may operate each vehicle or engine for no more than the greater of 
two periods:
    (1) 50 hours or 500 kilometers.
    (2) The number of hours or kilometers you operated the emission-
data vehicle used for certifying the engine family (see 40 CFR part 
1065, subpart E, or the applicable regulations governing how you should 
prepare your test vehicle or engine).
    (f) Damage during shipment. If shipping a vehicle or engine to a 
remote facility for production-line testing makes necessary an 
adjustment or repair, you must wait until after the initial emission 
test to do this work. We may waive this requirement if the test would 
be impossible or unsafe, or if it would permanently damage the vehicle 
or engine. Report to us, in your written report under Sec.  1051.345, 
all adjustments or repairs you make on test vehicles or engines before 
each test.
    (g) Retesting after invalid tests. You may retest a vehicle or 
engine if you determine an emission test is invalid under subpart F of 
this part. Explain in your written report reasons for invalidating any 
test and the emission results from all tests. If you retest a vehicle 
or engine, you may ask us to substitute results of the new tests for 
the original ones. You must ask us within ten days of testing. We will 
generally answer within ten days after we receive your information.
    230. Section 1051.310 is amended by revising paragraphs (c) 
introductory text, (c)(2), (f), (g), and (i) to read as follows:


Sec.  1051.310  How must I select vehicles or engines for production-
line testing?

* * * * *
    (c) Calculate the required sample size for each engine family. 
Separately calculate