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Control of Emissions of Air Pollution From Locomotive Engines and Marine Compression-Ignition Engines Less Than 30 Liters per Cylinder; Republication

PDF Version (50 pp, 1253K, About PDF)

[Federal Register: June 30, 2008 (Volume 73, Number 126)]
[Rules and Regulations]
[Page 37245-37294]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr30jn08-17]

[[pp. 37245-37294]]
Control of Emissions of Air Pollution From Locomotive
Engines and Marine Compression-Ignition Engines Less Than 30 Liters per
Cylinder; Republication

[[Continued from page 37244]]

[[Page 37245]]

    (b) The requirements of subpart I of this part apply to
remanufactured engines beginning July 7, 2008.
    (c) See 40 CFR part 94 for requirements that apply to engines with
maximum engine power at or above 37 kW not yet subject to the
requirements of this part 1042. See 40 CFR part 89 for requirements
that apply to engines with maximum engine power below 37 kW not yet
subject to the requirements of this part 1042.
    (d) The provisions of Sec. Sec.  1042.620 and 1042.901 apply for
new engines used solely for competition beginning January 1, 2009.
    (e) Marine engines powered by natural gas with maximum engine power
at or above 250 kW are deemed to be compression-ignition engines. These
engines are therefore subject to all the requirements of this part even
if they do not meet the definition of ``compression-ignition'' in Sec. 
1042.901.

Sec.  1042.2  Who is responsible for compliance?

    The regulations in this part 1042 contain provisions that affect
both engine manufacturers and others. However, the requirements of this
part, other than those of subpart I of this part, are generally
addressed to the engine manufacturer for freshly manufactured marine
engines or other certificate holders. The term ``you'' generally means
the engine manufacturer, as defined in Sec.  1042.901, especially for
issues related to certification (including production-line testing,
reporting, etc.).

Sec.  1042.5  Exclusions.

    This part does not apply to the following marine engines:
    (a) Foreign vessels. The requirements and prohibitions of this part
do not apply to engines installed on foreign vessels, as defined in
Sec.  1042.901.
    (b) Hobby engines. Engines with per-cylinder displacement below 50
cubic centimeters are not subject to the provisions of this part 1042.

Sec.  1042.10  Organization of this part.

    This part 1042 is divided into the following subparts:
    (a) Subpart A of this part defines the applicability of this part
1042 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.  1042.145 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 and 40 CFR 1065 describe how to test
your engines.
    (g) Subpart G of this part and 40 CFR part 1068 describe
requirements, prohibitions, and other provisions that apply to engine
manufacturers, vessel 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 describes how these regulations apply
for remanufactured engines.
    (j) Subpart J of this part contains definitions and other reference
information.

Sec.  1042.15  Do any other regulation parts apply to me?

    (a) The evaporative emission requirements of part 1060 of this
chapter apply to vessels that include installed engines fueled with a
volatile liquid fuel as specified in Sec.  1042.107. (Note:
Conventional diesel fuel is not considered to be a volatile liquid fuel.)
    (b) Part 1065 of this chapter describes procedures and equipment
specifications for testing engines. Subpart F of this part 1042
describes how to apply the provisions of part 1065 of this chapter to
determine whether engines meet the emission standards in this part.
    (c) 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 1042, or vessels containing these engines. Part 1068 of this
chapter describes general provisions, including these seven areas:
    (1) Prohibited acts and penalties for engine manufacturers, vessel
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.
    (d) Other parts of this chapter apply if referenced in this part.

Subpart B--Emission Standards and Related Requirements

Sec.  1042.101   Exhaust emission standards.

    (a) Duty-cycle standards. Exhaust emissions from your engines may
not exceed emission standards, as follows:
    (1) Measure emissions using the test procedures described in
subpart F of this part.
    (2) The following CO emission standards in this paragraph (a)(2)
apply starting with the applicable model year identified in Sec.  1042.1:
    (i) 8.0 g/kW-hr for engines below 8 kW.
    (ii) 6.6 g/kW-hr for engines at or above 8 kW and below 19 kW.
    (iii) 5.5 g/kW-hr for engines at or above 19 kW and below 37 kW.
    (iv) 5.0 g/kW-hr for engines at or above 37 kW.
    (3) Except as described in paragraphs (a)(4) and (5) of this
section, the Tier 3 standards for PM and NOX+HC emissions
are described in the following tables:
BILLING CODE 1505-01-D

[[Page 37246]]
[GRAPHIC]
[TIFF OMITTED] TR06MY08.012
BILLING CODE 1505-01-C

              Table 2 to Sec.   1042.101.--Tier 3 Standards for Category 2 Engines Below 3700 kW a
----------------------------------------------------------------------------------------------------------------
                                                                                                   NOX+HC (g/kW-
         Displacement (L/cyl)             Maximum engine power      Model year     PM  (g/kW-hr)        hr)
----------------------------------------------------------------------------------------------------------------
7.0 <= disp. < 15.0...................  kW < 2000...............           2013+            0.14             6.2
                                        2000 <= kW < 3700.......           2013+            0.14           b 7.8
15.0 <= disp. < 20.0 c................  kW < 2000...............           2014+            0.34             7.0
20.0 <= disp. < 25.0 c................  kW < 2000...............           2014+            0.27             9.8
25.0 <= disp. < 30.0 c................  kW < 2000...............           2014+            0.27            11.0
----------------------------------------------------------------------------------------------------------------
a No Tier 3 standards apply for Category 2 engines at or above 3700 kW. See Sec.   1042.1(c) and paragraph
  (a)(7) of this section for the standards that apply for these engines.
b For engines subject to the 7.8 g/kW-hr NOX+HC standard, FELs may not be higher than the Tier 1 NOX standard
  specified in Appendix I of this part.
c No Tier 3 standards apply for Category 2 engines with per-cylinder displacement above 15.0 liters if maximum
  engine power is at or above 2000 kW. See Sec.   1042.1(c) and paragraph (a)(7) of this section for the
  standards that apply for these engines.

    (4) For Tier 3 engines at or above 19 kW and below 75 kW with
displacement below 0.9 L/cyl, you may alternatively certify some or all
of your engine families to a PM emission standard of 0.20 g/kW-hr and a
NOX+HC emission standard of 5.8 g/kW-hr for 2014 and later
model years.
    (5) Starting with the 2014 model year, recreational marine engines
at or above 3700 kW (with any displacement) must be certified under
this part 1042 to the Tier 3 standards specified in this section for
3.5 to 7.0 L/cyl recreational marine engines.
    (6) Interim Tier 4 PM standards apply for 2014 and 2015 model year
engines between 2000 and 3700 kW as specified in this paragraph (a)(6).
These engines are considered to be Tier 4 engines.
    (i) For Category 1 engines, the Tier 3 PM standards from Table 1 to
this section continue to apply. PM FELs for these engines may not be
higher than the applicable Tier 2 PM standards specified in Appendix I
of this part.
    (ii) For Category 2 engines with per-cylinder displacement below
15.0 liters, the Tier 3 PM standards from Table 2 to this section
continue to apply. PM FELs for these engines may not be higher than
0.27 g/kW-hr.
    (iii) For Category 2 engines with per-cylinder displacement at or
above 15.0 liters, the PM standard is 0.34 g/kW-hr for engines at or
above 2000 kW and

[[Page 37247]]

below 3300 kW, and 0.27 g/kW-hr for engines at or above 3300 kW and
below 3700 kW. PM FELs for these engines may not be higher than 0.50 g/
kW-hr.
    (7) Except as described in paragraph (a)(8) of this section, the
Tier 4 standards for PM, NOX, and HC emissions are described
in the following table:

   Table 3 to Sec.   1042.101.--Tier 4 Standards for Category 2 and Commercial Category 1 Engines Above 600 kW
----------------------------------------------------------------------------------------------------------------
                                                                            PM  (g/kW-  NOX  (g/kW-   HC  (g/kW-
        Maximum engine power           Displacement  (L/cyl)   Model year      hr)          hr)          hr)
----------------------------------------------------------------------------------------------------------------
600 <= kW < 1400....................  all...................        2017+         0.04          1.8         0.19
1400 <= kW < 2000...................  all...................        2016+         0.04          1.8         0.19
2000 <= kW < 3700 a.................  all...................        2014+         0.04          1.8         0.19
kW >= 3700..........................  disp. <15.0...........    2014-2015         0.12          1.8         0.19
                                      15.0 <= disp.< 30.0...    2014-2015         0.25          1.8         0.19
                                      all...................        2016+         0.06          1.8         0.19
----------------------------------------------------------------------------------------------------------------
a See paragraph (a)(6) of this section for interim PM standards that apply for model years 2014 and 2015 for
  engines between 2000 and 3700 kW. The Tier 4 NOX FEL cap for engines at or above 2000 kW and below 3700 kW is
  7.0 g/kW-hr. Starting in the 2016 model year, the Tier 4 PM FEL cap for engines at or above 2000 kW and below
  3700 kW is 0.34 g/kW-hr.

    (8) The following optional provisions apply for complying with the
Tier 3 and Tier 4 standards specified in paragraphs (a)(3) and (6) of
this section:
    (i) You may use NOX credits accumulated through the ABT
program to certify Tier 4 engines to a NOX+HC emission
standard of 1.9 g/kW-hr instead of the NOX and HC standards
that would otherwise apply by certifying your family to a
NOX+HC FEL. Calculate the NOX credits needed as
specified in subpart H of this part using the NOX+HC
emission standard and FEL in the calculation instead of the otherwise
applicable NOX standard and FEL. You may not generate
credits relative to the alternate standard or certify to the standard
without using credits.
    (ii) For engines below 1000 kW, you may delay complying with the
Tier 4 standards in the 2017 model year for up to nine months, but you
must comply no later than October 1, 2017.
    (iii) For engines at or above 3700 kW, you may delay complying with
the Tier 4 standards in the 2016 model year for up to twelve months,
but you must comply no later than December 31, 2016.
    (iv) For Category 2 engines at or above 1400 kW, you may
alternatively comply with the Tier 3 and Tier 4 standards specified in
Table 4 of this section instead of the NOX, HC,
NOX+HC, and PM standards specified in paragraphs (a)(3) and
(6) of this section. The CO standards specified in paragraph (a)(2) of
this section apply without regard to whether you choose this option. If
you choose this option, you must do so for all engines at or above 1400
kW in the same displacement category (that is, 7-15, 15-20, 20-25, or
25-30 liters per cylinder) in model years 2012 through 2015.

  Table 4 to Sec.   1042.101.--Optional Tier 3 and Tier 4 Standards for Category 2 Engines at or Above 1400 kW
----------------------------------------------------------------------------------------------------------------
                                                                            PM  (g/kW-  NOX  (g/kW-   HC  (g/kW-
                Tier                   Maximum engine power    Model year      hr)          hr)          hr)
----------------------------------------------------------------------------------------------------------------
Tier 3..............................  kW >= 1400............    2012-2014         0.14         7.8 NOX+HC
Tier 4..............................  1400 <= kW < 3700.....         2015         0.04          1.8         0.19
                                      kW >= 3700............         2015         0.06          1.8         0.19
----------------------------------------------------------------------------------------------------------------

    (b) Averaging, banking, and trading. You may generate or use
emission credits under the averaging, banking, and trading (ABT)
program as described in subpart H of this part for demonstrating
compliance with NOX, NOX+HC, and PM emission
standards for Category 1 and Category 2 engines. You may also use
NOX or NOX+HC emission credits to comply with the
alternate NOX+HC standard in paragraph (a)(8)(i) of this
section. Generating or using emission credits requires that you specify
a family emission limit (FEL) for each pollutant you include in the ABT
program for each engine family. These FELs serve as the emission
standards for the engine family with respect to all required testing
instead of the standards specified in paragraph (a) of this section.
The FELs determine the not-to-exceed standards for your engine family,
as specified in paragraph (c) of this section. Unless otherwise
specified, the following FEL caps apply:
    (1) FELs for Tier 3 engines may not be higher than the applicable
Tier 2 standards specified in Appendix I of this part.
    (2) FELs for Tier 4 engines may not be higher than the applicable
Tier 3 standards specified in paragraph (a)(3) of this section.
    (c) Not-to-exceed standards. Except as noted in Sec.  1042.145(e),
exhaust emissions from all engines subject to the requirements of this
part may not exceed the not-to-exceed (NTE) standards as follows:
    (1) Use the following equation to determine the NTE standards:
    (i) NTE standard for each pollutant = STD x M.

Where:

STD = The standard specified for that pollutant in this section if
you certify without using ABT for that pollutant; or the FEL for
that pollutant if you certify using ABT.
M = The NTE multiplier for that pollutant.

    (ii) Round each NTE standard to the same number of decimal places
as the emission standard.
    (2) Determine the applicable NTE zone and subzones as described in
Sec.  1042.515. Determine NTE multipliers for specific zones and
subzones and pollutants as follows:
    (i) For commercial marine engines certified using the duty cycle
specified in Sec.  1042.505(b)(1), except for variable-speed propulsion
marine engines used

[[Page 37248]]

with controllable-pitch propellers or with electrically coupled
propellers, apply the following NTE multipliers:
    (A) Subzone 1: 1.2 for Tier 3 NOX+HC standards.
    (B) Subzone 1: 1.5 for Tier 4 standards and Tier 3 PM and CO standards.
    (C) Subzone 2: 1.5 for NOX+HC standards.
    (D) Subzone 2: 1.9 for PM and CO standards.
    (ii) For recreational marine engines certified using the duty cycle
specified in Sec.  1042.505(b)(2), except for variable-speed marine
engines used with controllable-pitch propellers or with electrically
coupled propellers, apply the following NTE multipliers:
    (A) Subzone 1: 1.2 for Tier 3 NOX+HC standards.
    (B) Subzone 1: 1.5 for Tier 4 standards and Tier 3 PM and CO standards.
    (C) Subzones 2 and 3: 1.5 for NOX+HC standards.
    (D) Subzones 2 and 3: 1.9 for PM and CO standards.
    (iii) For variable-speed marine engines used with controllable-
pitch propellers or with electrically coupled propellers that are
certified using the duty cycle specified in Sec.  1042.505(b)(1), (2),
or (3), apply the following NTE multipliers:
    (A) Subzone 1: 1.2 for Tier 3 NOX+HC standards.
    (B) Subzone 1: 1.5 for Tier 4 standards and Tier 3 PM and CO standards.
    (C) Subzone 2: 1.5 for NOX+HC standards.
    (D) Subzone 2: 1.9 for PM and CO standards. However, there is no
NTE standard in Subzone 2b for PM emissions if the engine family's
applicable standard for PM is at or above 0.07 g/kW-hr.
    (iv) For constant-speed engines certified using a duty cycle specified
in Sec.  1042.505(b)(3) or (4), apply the following NTE multipliers:
    (A) Subzone 1: 1.2 for Tier 3 NOX+HC standards.
    (B) Subzone 1: 1.5 for Tier 4 standards and Tier 3 PM and CO standards.
    (C) Subzone 2: 1.5 for NOX+HC standards.
    (D) Subzone 2: 1.9 for PM and CO standards. However, there is no
NTE standard for PM emissions if the engine family's applicable
standard for PM is at or above 0.07 g/kW-hr.
    (v) For variable-speed auxiliary marine engines certified using the
duty cycle specified in Sec.  1042.505(b)(5)(ii) or (iii):
    (A) Subzone 1: 1.2 for Tier 3 NOX+HC standards.
    (B) Subzone 1: 1.5 for Tier 4 standards and Tier 3 PM and CO standards.
    (C) Subzone 2: 1.2 for Tier 3 NOX+HC standards.
    (D) Subzone 2: 1.5 for Tier 4 standards and Tier 3 PM and CO
standards. However, there is no NTE standard for PM emissions if the
engine family's applicable standard for PM is at or above 0.07 g/kW-hr.
    (3) The NTE standards apply to your engines whenever they operate
within the NTE zone for an NTE sampling period of at least thirty
seconds, during which only a single operator demand set point may be
selected. Engine operation during a change in operator demand is excluded
from any NTE sampling period. There is no maximum NTE sampling period.
    (4) Collect emission data for determining compliance with the NTE
standards using the procedures described in subpart F of this part.
    (5) You may ask us to accept as compliant an engine that does not
fully meet specific requirements under the applicable NTE standards
where such deficiencies are necessary for safety.
    (d) Fuel types. The exhaust emission standards in this section
apply for engines using the fuel type on which the engines in the
engine family are designed to operate.
    (1) 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:
    (i) Alcohol-fueled engines must comply with Tier 3 HC standards
based on THCE emissions and with Tier 4 standards based on NMHCE emissions.
    (ii) Natural gas-fueled engines must comply with HC standards based
on NMHC emissions.
    (iii) Diesel-fueled and other engines must comply with Tier 3 HC
standards based on THC emissions and with Tier 4 standards based on
NMHC emissions.
    (2) Tier 3 and later engines must comply with the exhaust emission
standards when tested using test fuels containing 15 ppm or less sulfur
(ultra low-sulfur diesel fuel). Manufacturers may use low-sulfur diesel
fuel (without request) to certify an engine otherwise requiring an
ultra low-sulfur test fuel; however, emissions may not be corrected to
account for the effects of using higher sulfur fuel.
    (3) Engines designed to operate using residual fuel must comply
with the standards and requirements of this part when operated using
residual fuel in addition to complying with the requirements of this
part when operated using diesel fuel.
    (e) Useful life. Your engines must meet the exhaust emission
standards of this section over their full useful life, expressed as a
period in years or hours of engine operation, whichever comes first.
    (1) The minimum useful life values are as follows, except as
specified by paragraph (e)(2) or (3) of this section:
    (i) 10 years or 1,000 hours of operation for recreational Category
1 engines
    (ii) 5 years or 3,000 hours of operation for commercial engines
below 19 kW.
    (iii) 7 years or 5,000 hours of operation for commercial engines at
or above 19 kW and below 37kW.
    (iv) 10 years or 10,000 hours of operation for commercial Category
1 engines at or above 37 kW.
    (v) 10 years or 20,000 hours of operation for Category 2 engines.
    (2) 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 indicates a longer design life).
    (ii) If your basic mechanical warranty is longer than the minimum
useful life.
    (3) 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.
    (f) Applicability for testing. The duty-cycle emission standards in
this subpart apply to all testing performed according to the procedures
in Sec.  1042.505, including certification, production-line, and in-use
testing. The not-to-exceed standards apply for all testing

[[Page 37249]]

performed according to the procedures of subpart F of this part.

Sec.  1042.107   Evaporative emission standards.

    You must design and produce engines fueled with a volatile liquid
fuel to minimize evaporative emissions during normal operation,
including periods when the engine is shut down. You must also design
and produce them to minimize the escape of fuel vapors during
refueling. Hoses used to refuel gaseous-fueled engines may not be
designed to be bled or vented to the atmosphere under normal operating
conditions. No valves or pressure-relief vents may be used on gaseous-
fueled engines except as emergency safety devices that do not operate
at normal system operating flows and pressures.

Sec.  1042.110   Recording reductant use and other diagnostic functions.

    (a) Engines equipped with SCR systems using a reductant other than
the engine's fuel must meet the following requirements:
    (1) The diagnostic system must monitor reductant quality and tank
levels and alert operators to the need to refill the reductant tank
before it is empty, or to replace the reductant if it does not meet
your concentration specifications. Unless we approve other alerts, use
a malfunction-indicator light (MIL) and an audible alarm. You do not
need to separately monitor reductant quality if you include an exhaust
NOX sensor (or other sensor) that allows you to determine
inadequate reductant quality. However, tank level must be monitored in
all cases.
    (2) The onboard computer log must record in nonvolatile computer
memory all incidents of engine operation with inadequate reductant
injection or reductant quality.
    (b) If you determine your emission controls have failure modes that
may reasonably be expected to affect safety, equip the engines with
diagnostic features that will alert the operator to such failures. Use
good engineering judgment to alert the operator before the failure occurs.
    (c) You may equip your engine with other diagnostic features. If
you do, they must be designed to allow us to read and interpret the
codes. Note that Sec. Sec.  1042.115 and 1042.205 require that you
provide us any information needed to read, record, and interpret all
the information broadcast by an engine's onboard computers and
electronic control units.

Sec.  1042.115   Other requirements.

    Engines that are required to comply with the emission standards of
this part must meet the following requirements:
    (a) Crankcase emissions. Crankcase emissions may not be discharged
directly into the ambient atmosphere from any engine throughout its
useful life, 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. If you take
advantage of this exception, you must do both of the following things:
    (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.
    (2) 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.
    (b) Torque broadcasting. Electronically controlled engines must
broadcast their speed and output shaft torque (in newton-meters).
Engines may alternatively broadcast a surrogate value for determining
torque. Engines must broadcast engine parameters such that they can be
read with a remote device, or broadcast them directly to their
controller area networks. This information is necessary for testing
engines in the field (see Sec.  1042.515).
    (c) EPA access to broadcast information. If we request it, you must
provide us any hardware or tools we would need to readily read,
interpret, and record all information broadcast by an engine's on-board
computers and electronic control modules. If you broadcast a surrogate
parameter for torque values, you must provide us what we need to
convert these into torque units. We will not ask for hardware or tools
if they are readily available commercially.
    (d) Adjustable parameters. An operating parameter is not considered
adjustable if you permanently seal it or if it is not normally
accessible using ordinary tools. The following provisions apply for
adjustable parameters:
    (1) Category 1 engines that have adjustable parameters must meet
all the requirements of this part for any adjustment in the physically
adjustable range. 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.
    (2) Category 2 engines that have adjustable parameters must meet
all the requirements of this part for any adjustment in the specified
adjustable range. You must specify in your application for
certification the adjustable range of each adjustable parameter on a
new engine to--
    (i) Ensure that safe engine operating characteristics are available
within that range, as required by section 202(a)(4) of the Clean Air
Act (42 U.S.C. 7521(a)(4)), taking into consideration the production
tolerances.
    (ii) Limit the physical range of adjustability to the maximum
extent practicable to the range that is necessary for proper operation
of the engine.
    (e) Prohibited controls. You may not design your engines with
emission-control devices, systems, or elements of design that cause or
contribute to an unreasonable risk to public health, welfare, or safety
while operating. For example, this would apply if the engine emits a
noxious or toxic substance it would otherwise not emit, that
contributes to such an unreasonable risk.
    (f) 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 duty-cycle test procedures described in subpart F of this
part (the portion during which emissions are measured). See paragraph
(f)(4) of this section for other conditions.
    (2) You show your design is necessary to prevent engine (or vessel)
damage or accidents.
    (3) The reduced effectiveness applies only to starting the engine.

Sec.  1042.120   Emission-related warranty requirements.

    (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.

[[Page 37250]]

    (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 as long as the minimum warranty periods listed in this
paragraph (b) in hours of operation and 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 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.
The following minimum warranty periods apply:
    (1) For Category 1 and Category 2 engines, your emission-related
warranty must be valid for at least 50 percent of the engine's useful
life in hours of operation or a number of years equal to at least 50
percent of the useful life in years, whichever comes first.
    (2) [Reserved]
    (c) Components covered. The emission-related warranty covers all
components whose failure would increase an engine's emissions of any
pollutant, including those listed in 40 CFR part 1068, Appendix I, and
those from any other system you develop to control emissions. The
emission-related warranty for freshly manufactured marine engines
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. For
remanufactured engines, your emission-related warranty does not cover
used parts that are not replaced during the remanufacture.
    (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.

Sec.  1042.125  Maintenance instructions for Category 1 and Category 2
engines.

    Give the ultimate purchaser of each new engine written instructions
for properly maintaining and using the engine, including the emission
control system, as described in this section. The maintenance
instructions also apply to service accumulation on your emission-data
engines as described in Sec.  1042.245 and in 40 CFR part 1065. This
section applies only to Category 1 and Category 2 engines.
    (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 any lack of maintenance that
increases emissions 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) For engines below 130 kW, you may not schedule critical
emission-related maintenance more frequently than the following minimum
intervals, except as specified in paragraphs (a)(4), (b), and (c) of
this section:
    (i) For EGR-related filters and coolers, PCV valves, and fuel
injector tips (cleaning only), the minimum interval is 1,500 hours.
    (ii) For the following components, including associated sensors and
actuators, the minimum interval is 3,000 hours: Fuel injectors,
turbochargers, catalytic converters, electronic control units,
particulate traps, trap oxidizers, components related to particulate
traps and trap oxidizers, EGR systems (including related components,
but excluding filters and coolers), and other add-on components. For
particulate traps, trap oxidizers, and components related to either of
these, maintenance is limited to cleaning and repair only.
    (3) For Category 1 and Category 2 engines at or above 130 kW, you
may not schedule critical emission-related maintenance more frequently
than the following minimum intervals, except as specified in paragraphs
(a)(4), (b), and (c) of this section:
    (i) For EGR-related filters and coolers, PCV valves, and fuel
injector tips (cleaning only), the minimum interval is 1,500 hours.
    (ii) For the following components, including associated sensors and
actuators, the minimum interval is 4500 hours: Fuel injectors,
turbochargers, catalytic converters, electronic control units,
particulate traps, trap oxidizers, components related to particulate
traps and trap oxidizers, EGR systems (including related components,
but excluding filters and coolers), and other add-on components. For
particulate traps, trap oxidizers, and components related to either of
these, maintenance is limited to cleaning and repair only.
    (4) We may approve shorter maintenance intervals than those listed
in paragraph (a)(3) of this section where technologically necessary.
    (5) If your engine family has an alternate useful life under Sec. 
1042.101(e) that is shorter than the period specified in paragraph
(a)(2) or (a)(3) 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 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 atypical
engine operation. You must clearly state that this additional
maintenance is associated with the special situation you are addressing.
    (d) Noncritical emission-related maintenance. Subject to the
provisions of this paragraph (d), you may schedule any amount of
emission-related inspection or maintenance that is not covered by
paragraph (a) of this section (that is, maintenance that is neither
explicitly identified as critical emission-related maintenance, nor
that we approve as critical emission-related maintenance). Noncritical
emission-

[[Page 37251]]

related maintenance generally includes maintenance on the components we
specify in 40 CFR part 1068, Appendix I. You must 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 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 engine 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 the applicable dates shown in paragraph (6) of the
definition of ``new marine engine'' in Sec.  1042.901.
    (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.

Sec.  1042.130   Installation instructions for vessel manufacturers.

    (a) If you sell an engine for someone else to install in a vessel,
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 vessel 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.  1042.205(u).
    (4) Describe any necessary steps for installing the diagnostic
system described in Sec.  1042.110.
    (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 for
constant-speed operation, tell vessel manufacturers not to install the
engines in variable-speed applications or modify the governor.
    (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 vessel, as
described in 40 CFR 1068.105.''.
    (8) Describe any vessel labeling requirements specified in Sec. 
1042.135.
    (c) You do not need installation instructions for engines you
install in your own vessels.
    (d) Provide instructions in writing or in an equivalent format. For
example, you may post instructions on a publicly available Web site 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.

Sec.  1042.135   Labeling.

    (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.  1042.640.
    (3) Include EPA's standardized designation for the engine family
(and subfamily, where applicable).
    (4) Identify all the emission standards that apply to the engine
(or FELs, if applicable). If you do not declare an FEL under subpart H
of this part, you may alternatively state the engine's category,
displacement (in liters or L/cyl), maximum engine power (in kW), and
power density (in kW/L) as needed to determine the emission standards
for the engine family. You may specify displacement, maximum engine
power, or power density as a range consistent with the ranges listed in
Sec.  1042.101. See Sec.  1042.140 for descriptions of how to specify
per-cylinder displacement, maximum engine power, and power density.
    (5) State the date of manufacture [DAY (optional), MONTH, and
YEAR]. However, you may omit this from the label if you stamp or
engrave it on the engine, in which case you must also describe in your
application for certification where you will identify the date on the
engine.
    (6) Identify the application(s) for which the engine family is certified

[[Page 37252]]

(such as constant-speed auxiliary, variable-speed propulsion engines
used with fixed-pitch propellers, etc.). If the engine is certified as
a recreational engine, state: ``INSTALLING THIS RECREATIONAL ENGINE IN
A COMMERCIAL VESSEL OR USING THE VESSEL FOR COMMERCIAL PURPOSES MAY
VIOLATE FEDERAL LAW SUBJECT TO CIVIL PENALTY (40 CFR 1042.601).''.
    (7) For engines requiring ULSD, state: ``ULTRA LOW SULFUR DIESEL
FUEL ONLY''.
    (8) State the useful life for your engine family if the applicable
useful life is based on the provisions of Sec.  1042.101(e)(2) or (3).
    (9) Identify the emission control system. Use terms and
abbreviations consistent with SAE J1930 (incorporated by reference in
Sec.  1042.910). 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: ``THIS MARINE ENGINE COMPLIES WITH U.S. EPA REGULATIONS
FOR [MODEL YEAR].''.
    (11) For an engine that can be modified to operate on residual
fuel, but has not been certified to meet the standards on such a fuel,
include the statement: ``THIS ENGINE IS CERTIFIED FOR OPERATION ONLY
WITH DIESEL FUEL. MODIFYING THE ENGINE TO OPERATE ON RESIDUAL OR INTERMEDIATE
FUEL MAY BE A VIOLATION OF FEDERAL LAW SUBJECT TO CIVIL PENALTIES.''.
    (d) You may add information to the emission control information
label as follows:
    (1) You may identify other emission standards that the engine meets
or does not meet (such as international standards). You may include
this information by adding it to the statement we specify or by
including a separate statement.
    (2) You may add other information to ensure that the engine will be
properly maintained and used.
    (3) You may add appropriate features to prevent counterfeit labels.
For example, you may include the engine's unique identification number
on the label.
    (e) For engines requiring ULSD, create a separate label with the
statement: ``ULTRA LOW SULFUR DIESEL FUEL ONLY''. Permanently attach
this label to the vessel near the fuel inlet or, if you do not
manufacture the vessel, take one of the following steps to ensure that
the vessel will be properly labeled:
    (1) Provide the label to each vessel manufacturer and include in
the emission-related installation instructions the requirement to place
this label near the fuel inlet.
    (2) Confirm that the vessel manufacturers install their own
complying labels.
    (f) You may ask us to approve modified labeling requirements in
this part 1042 if you show that it is necessary or appropriate. We will
approve your request if your alternate label is consistent with the
intent of the labeling requirements of this part.
    (g) If you obscure the engine label while installing the engine in
the vessel such that the label will be hard to read during normal
maintenance, you must place a duplicate label on the vessel. If others
install your engine in their vessels in a way that obscures the engine
label, we require them to add a duplicate label on the vessel (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 vessel manufacturer.
    (2) The number of duplicate labels you send for each family and the
date you sent them.

Sec.  1042.140   Maximum engine power, displacement, and power density.

    This section describes how to determine the maximum engine power,
displacement, and power density of an engine for the purposes of this
part. Note that maximum engine power may differ from the definition of
``maximum test power'' in Sec.  1042.901.
    (a) An engine configuration's maximum engine power is the maximum
brake power point on the nominal power curve for the engine
configuration, as defined in this section. Round the power value to the
nearest whole kilowatt.
    (b) The nominal power curve of an engine configuration is the
relationship between maximum available engine brake power and engine
speed for an engine, using the mapping procedures of 40 CFR part 1065,
based on the manufacturer's design and production specifications for
the engine. This information may also be expressed by a torque curve
that relates maximum available engine torque with engine speed.
    (c) An engine configuration's per-cylinder displacement is the
intended swept volume of each cylinder. The swept volume of the engine
is the product of the internal cross-section area of the cylinders, the
stroke length, and the number of cylinders. Calculate the engine's
intended swept volume from the design specifications for the cylinders
using enough significant figures to allow determination of the
displacement to the nearest 0.02 liters. Determine the final value by
truncating digits to establish the per-cylinder displacement to the
nearest 0.1 liters. For example, for an engine with circular cylinders
having an internal diameter of 13.0 cm and a 15.5 cm stroke length, the
rounded displacement would be: (13.0/2) \2\ x ([pi]) x (15.5) / 1000 =
2.0 liters.
    (d) The nominal power curve and intended swept volume must be
within the range of the actual power curves and swept volumes of
production engines considering normal production variability. If after
production begins, it is determined that either your nominal power
curve or your intended swept volume does not represent production
engines, we may require you to amend your application for certification
under Sec.  1042.225.
    (e) Throughout this part, references to a specific power value for
an engine are based on maximum engine power. For example, the group of
engines with maximum engine power above 600 kW may be referred to as
engines above 600 kW.
    (f) Calculate an engine family's power density in kW/L by dividing
the unrounded maximum engine power by the engine's unrounded per-
cylinder displacement, then dividing by the number of cylinders. Round
the calculated value to the nearest whole number.

Sec.  1042.145   Interim provisions.

    (a) General. The provisions in this section apply instead of other
provisions in this part for Category 1 and Category 2 engines. This
section describes when these interim provisions expire.
    (b) Delayed standards. Post-manufacturer marinizers that are small-
volume engine manufacturers may delay compliance with the Tier 3
standards for engines below 600 kW as follows:
    (1) You may delay compliance with the Tier 3 standards for one
model year, as long as the engines meet all the requirements that apply
to Tier 2 engines.
    (2) You may delay compliance with the NTE standards for Tier 3
engines for three model years in addition to the one-year delay
specified in paragraph (b)(1) of this section, as long as the engines
meet all other Tier 3 requirements for the appropriate model year.
    (c) Part 1065 test procedures. You must generally use the test
procedures specified in subpart F of this part, including the
applicable test procedures in 40 CFR part 1065. As specified in this
paragraph (c), you may use a

[[Page 37253]]

combination of the test procedures specified in this part and the test
procedures specified for Tier 2 engines before January 1, 2015. After
this date, you must use test procedures only as specified in subpart F
of this part.
    (1) You may determine maximum test speed for engines below 37 kW as
specified in 40 CFR part 89 without request through the 2009 model year.
    (2) Before January 1, 2015, you may ask to use some or all of the
procedures specified in 40 CFR part 94 (or 40 CFR part 89 for engines
below 37 kW) for engines certified under this part 1042. If you ask to
rely on a combination of procedures under this paragraph (c)(2), we
will approve your request only if you show us that it does not affect
your ability to demonstrate compliance with the applicable emission
standards. This generally requires that the combined procedures would
result in emission measurements at least as high as those that would be
measured using the procedures specified in this part. Alternatively,
you may demonstrate that the combined effects of the different
procedures is small relative to your compliance margin (the degree to
which your emissions are below the applicable standards).
    (d) [Reserved]
    (e) Delayed compliance with NTE standards. Engines below 56 kW may
delay complying with the NTE standards specified in Sec.  1042.101(c)
until the 2013 model year. Engines at or above 56 kW and below 75 kW
may delay complying with the NTE standards specified in Sec. 
1042.101(c) until the 2012 model year.
    (f) In-use compliance limits. The provisions of this paragraph (f)
apply for the first three model years of the Tier 4 standards. For
purposes of determining compliance based on testing other than
certification or production-line testing, calculate the applicable in-
use compliance limits by adjusting the applicable standards/FELs. The
PM adjustment does not apply for engines with a PM standard or FEL
above 0.04 g/kW-hr. The NOX adjustment does not apply for
engines with a NOX FEL above 2.7 g/kW-hr. Add the applicable
adjustments in one of the following tables to the otherwise applicable
standards and NTE limits. You must specify during certification which
add-ons, if any, will apply for your engines.

   Table 1 to Sec.   1042.145.--In-use Adjustments for the First Three
                   Model Years of the Tier 4 Standards
------------------------------------------------------------------------
                                         In-use adjustments (g/kW-hr)
                                     -----------------------------------
Fraction of useful life already used   For Tier 4 NOX    For Tier 4  PM
                                          standards         standards
------------------------------------------------------------------------
0 < hours <= 50% of useful life.....               0.9              0.02
50 < hours <= 75% of useful life....               1.3              0.02
hours > 75% of useful life..........               1.7              0.02
------------------------------------------------------------------------


 Table 2 to Sec.   1042.145.--Optional In-use Adjustments for the First
                Three Model Years of the Tier 4 Standards
------------------------------------------------------------------------
                                         In-use adjustments (g/kW-hr)
                                     -----------------------------------
                                       For model year    For model year
Fraction of useful life already used  2017 and earlier  2017 and earlier
                                         Tier 4 NOX         Tier 4 PM
                                          standards         standards
------------------------------------------------------------------------
0 < hours <= 50% of useful life.....               0.3              0.05
50 < hours <= 75% of useful life....               0.4              0.05
hours > 75% of useful life..........               0.5              0.05
------------------------------------------------------------------------

    (g) Deficiencies for NTE standards. You may ask us to accept as
compliant an engine that does not fully meet specific requirements
under the applicable NTE standards. Such deficiencies are intended to
allow for minor deviations from the NTE standards under limited
conditions. We expect your engines to have functioning emission control
hardware that allows you to comply with the NTE standards.
    (1) Request our approval for specific deficiencies in your
application for certification, or before you submit your application.
We will not approve deficiencies retroactively to cover engines already
certified. In your request, identify the scope of each deficiency and
describe any auxiliary emission control devices you will use to control
emissions to the lowest practical level, considering the deficiency you
are requesting.
    (2) We will approve a deficiency only if compliance would be
infeasible or unreasonable considering such factors as the technical
feasibility of the given hardware and the applicable lead time and
production cycles. We may consider other relevant factors.
    (3) Our approval applies only for a single model year and may be
limited to specific engine configurations. We may approve your request
for the same deficiency in the following model year if correcting the
deficiency would require unreasonable hardware or software
modifications and we determine that you have demonstrated an acceptable
level of effort toward complying.
    (4) You may ask for any number of deficiencies in the first three
model years during which NTE standards apply for your engines. For the
next four model years, we may approve up to three deficiencies per
engine family. Deficiencies of the same type that apply similarly to
different power ratings within a family count as one deficiency per
family. We may condition approval of any such additional deficiencies
during these four years on any additional conditions we determine to be
appropriate. We will not approve deficiencies after the seven-year
period specified in this paragraph (g)(4), unless they are related to
safety.

Subpart C--Certifying Engine Families

Sec.  1042.201  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

[[Page 37254]]

certificate of conformity is valid starting with the indicated
effective date, but it is not valid for any production after December
31 of the model year for which it is issued. No certificate will be
issued after December 31 of the model year.
    (b) The application must contain all the information required by
this part and must not include false or incomplete statements or
information (see Sec.  1042.255).
    (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.  1042.250.
    (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.  1042.255 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.  1042.235(c)).
    (h) For engines that become new as a result of substantial
modifications or for engines installed on imported vessels that become
subject to the requirements of this part, we may specify alternate
certification provisions consistent with the intent of this part. See
the definition of ``new marine engine'' in Sec.  1042.901.

Sec.  1042.205  Application requirements.

    This section specifies the information that must be in your
application, unless we ask you to include less information under Sec. 
1042.201(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
type on which your engines are designed to operate (for example, ultra
low-sulfur diesel fuel). List each distinguishable engine configuration
in the engine family. For each engine configuration, list the maximum
engine power and the range of values for maximum engine power resulting
from production tolerances, as described in Sec.  1042.140.
    (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.
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 vessel-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 vessels:
    (i) Identify the engine and/or vessel 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 vessels 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) If your engines are equipped with an engine diagnostic system,
explain how it works, describing especially the engine conditions (with
the corresponding diagnostic trouble codes) that cause the malfunction-
indicator light to go on.
    (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 the duty cycle(s) and the corresponding engine applications.
Also describe any special or alternate test procedures you used.
    (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 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 and warranty instructions you will give
to the ultimate purchaser of each new engine (see Sec. Sec.  1042.120
and 1042.125). Describe your plan for meeting warranty obligations
under Sec. Sec.  1042.120.
    (j) Include the emission-related installation instructions you will
provide if someone else installs your engines in a vessel (see Sec. 
1042.130).
    (k) Describe your emission control information label (see Sec. 
1042.135).
    (l) Identify the emission standards and/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.  1042.245). Present any emission test
data you used for this.
    (n) 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.
    (o) Present emission data for HC, NOX, PM, and CO on an
emission-data engine to show your engines meet emission standards as
specified in

[[Page 37255]]

Sec.  1042.101. Show emission figures before and after applying
adjustment factors for regeneration and deterioration factors for each
pollutant and for each engine. If we specify more than one grade of any
fuel type (for example, high-sulfur and low-sulfur diesel fuel), you
need to submit test data only for one grade, unless the regulations of
this part specify otherwise for your engine.
    Include emission results for each mode if you do discrete-mode
testing under Sec.  1042.505. Note that Sec. Sec.  1042.235 and
1042.245 allows you to submit an application in certain cases without
new emission data.
    (p) For Category 1 and Category 2 engines, state that all the
engines in the engine family comply with the applicable not-to-exceed
emission standards in Sec.  1042.101 for all normal operation and use
when tested as specified in Sec.  1042.515. Describe any relevant
testing, engineering analysis, or other information in sufficient
detail to support your statement.
    (q) [Reserved]
    (r) Report all test results, including those from invalid 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 (in g/kW-hr). 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.
    (s) Describe all adjustable operating parameters (see Sec. 
1042.115(d)), 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) For Category 1 engines, 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.
    (5) For Category 2 engines, propose a range of adjustment for each
adjustable parameter, as described in Sec.  1042.115(d). Include
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 proposed adjustable ranges.
    (t) 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.
    (u) Confirm that your emission-related installation instructions
specify how to ensure that sampling of exhaust emissions will be
possible after engines are installed in vessels and placed in service.
Show how to sample exhaust emissions in a way that prevents diluting
the exhaust sample with ambient air.
    (v) State whether your certification is limited for certain
engines. If this is the case, describe how you will prevent use of
these engines in applications for which they are not certified. This
applies for engines such as the following:
    (1) Constant-speed engines.
    (2) Engines used with controllable-pitch propellers.
    (3) Recreational engines.
    (w) 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.
    (x) Include good-faith estimates of U.S.-directed production
volumes. Include a justification for the estimated production volumes
if they are substantially different than actual production volumes in
earlier years for similar models.
    (y) Include the information required by other subparts of this
part. For example, include the information required by Sec.  1042.725
if you participate in the ABT program.
    (z) Include other applicable information, such as information
specified in this part or 40 CFR part 1068 related to requests for
exemptions.
    (aa) Name an agent for service located in the United States.
Service on this agent constitutes service on you or any of your
officers or employees for any action by EPA or otherwise by the United
States related to the requirements of this part.
    (bb) The following provisions apply for imported engines:
    (1) Describe your normal practice for importing engines. For
example, this may include identifying the names and addresses of any
agents you have authorized to import your engines. Engines imported by
nonauthorized agents are not covered by your certificate.
    (2) For engines below 560 kW, identify a test facility in the
United States where you can test your engines if we select them for testing
under a selective enforcement audit, as specified in 40 CFR part 1068.

Sec.  1042.210  Preliminary approval.

    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, useful life, testing for
service accumulation, maintenance, and compliance with not-to-exceed
standards. See Sec.  1042.245 for specific provisions that apply for
deterioration factors. Decisions made under this section are considered
to be preliminary approval, subject to final review and approval. We
will generally not reverse a decision where we have given you
preliminary approval, unless we find new information supporting a
different decision. 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.  1042.220  Amending maintenance instructions.

    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.  1042.125.
You must send the Designated Compliance Officer a written 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 approve your request
if we determine that the amended instructions are consistent with
maintenance you performed on emission-data engines such that your
durability demonstration would remain valid. If operators follow the
original maintenance instructions rather than the newly specified
maintenance, this does not allow you to disqualify those engines from
in-use testing or deny a warranty claim.
    (a) If you are decreasing, replacing, or eliminating or any
specified maintenance, you may distribute the

[[Page 37256]]

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 do not need to 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.

Sec.  1042.225  Amending applications for certification.

    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 any of the
following actions:
    (1) Add an engine configuration to an engine family. In this case,
the engine configuration added must be consistent with other engine
configurations in the engine family with respect to the criteria listed
in Sec.  1042.230.
    (2) Change an engine configuration 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 as specified in
paragraph (a) of this section, 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 engine
configuration, include new test data showing that the new or modified
engine configuration 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 newly added or modified engine. You may ask for
a hearing if we deny your request (see Sec.  1042.920).
    (e) For engine families already covered by a certificate of
conformity, you may start producing the new or modified engine
configuration anytime after you send us your amended application and
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 engines.
    (f) You may ask us to approve a change to your FEL in certain cases
after the start of production. The changed FEL may not apply to engines
you have already introduced into U.S. commerce, except as described in
this paragraph (f). If we approve a changed FEL after the start of
production, you must include the new FEL on the emission control
information label for all engines produced after the change. You may
ask us to approve a change to your FEL in the following cases:
    (1) You may ask to raise your FEL for your emission family at any
time. In your request, you must show that you will still be able to
meet the emission standards as specified in subparts B and H of this
part. If you amend your application by submitting new test data to
include a newly added or modified engine or fuel-system component, as
described in paragraph (b)(3) of this section, use the appropriate FELs
with corresponding production volumes to calculate your production-
weighted average FEL for the model year, as described in subpart H of
this part. If you amend your application without submitting new test
data, you must use the higher FEL for the entire family to calculate
your production-weighted average FEL under subpart H of this part.
    (2) You may ask to lower the FEL for your emission family only if
you have test data from production engines showing that emissions are
below the proposed lower FEL. The lower FEL applies only to engines you
produce after we approve the new FEL. Use the appropriate FELs with
corresponding production volumes to calculate your production-weighted
average FEL for the model year, as described in subpart H of this part.

Sec.  1042.230  Engine families.

    (a) For purposes of certification, divide your product line into
families of engines that are expected to have similar emission
characteristics throughout the useful life as described in this
section. You may not group Category 1 and Category 2 engines in the
same family. Your engine family is limited to a single model year.
    (b) For Category 1 engines, group engines in the same engine family
if they are the same in all the following aspects:
    (1) The combustion cycle and the fuel with which the engine is
intended or designed to be operated.
    (2) The cooling system (for example, raw-water vs. separate-circuit
cooling).
    (3) Method of air aspiration.
    (4) Method of exhaust aftertreatment (for example, catalytic
converter or particulate trap).
    (5) Combustion chamber design.
    (6) Nominal bore and stroke.
    (7) Number of cylinders (for engines with aftertreatment devices only).
    (8) Cylinder arrangement (for engines with aftertreatment devices only).
    (9) Method of control for engine operation other than governing
(i.e., mechanical or electronic).
    (10) Application (commercial or recreational).
    (11) Numerical level of the emission standards that apply to the
engine, except as allowed under paragraphs (f) and (g) of this section.
    (c) For Category 2 engines, group engines in the same engine family
if they are the same in all the following aspects:

[[Page 37257]]

    (1) The combustion cycle (e.g., diesel cycle).
    (2) The fuel with which the engine is intended or designed to be
operated and the fuel system configuration.
    (3) The cooling system (for example, air-cooled or water-cooled),
and procedure(s) employed to maintain engine temperature within desired
limits (thermostat, on-off radiator fans, radiator shutters, etc.).
    (4) The method of air aspiration (turbocharged, supercharged,
naturally aspirated, Roots blown).
    (5) The turbocharger or supercharger general performance
characteristics (e.g., approximate boost pressure, approximate response
time, approximate size relative to engine displacement).
    (6) The type of air inlet cooler (air-to-air, air-to-liquid,
approximate degree to which inlet air is cooled).
    (7) The type of exhaust aftertreatment system (oxidation catalyst,
particulate trap), and characteristics of the aftertreatment system
(catalyst loading, converter size vs. engine size).
    (8) The combustion chamber configuration and the surface-to-volume
ratio of the combustion chamber when the piston is at top dead center
position, using nominal combustion chamber dimensions.
    (9) Nominal bore and stroke dimensions.
    (10) The location of the piston rings on the piston.
    (11) The intake manifold induction port size and configuration.
    (12) The exhaust manifold port size and configuration.
    (13) The location of the intake and exhaust valves (or ports).
    (14) The size of the intake and exhaust valves (or ports).
    (15) The approximate intake and exhaust event timing and duration
(valve or port).
    (16) The configuration of the fuel injectors and approximate
injection pressure.
    (17) The type of fuel injection system controls (i.e., mechanical
or electronic).
    (18) The overall injection timing characteristics, or as
appropriate ignition timing characteristics (i.e., the deviation of the
timing curves from the optimal fuel economy timing curve must be
similar in degree).
    (19) The type of smoke control system.
    (d) [Reserved]
    (e) You may subdivide a group of engines 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. However, for the purpose of applying small-volume family
provisions of this part, we will consider the otherwise applicable
engine family criteria of this section.
    (f) You may group engines 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) In unusual circumstances, you may group such engines 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 engine manufacturer, you may group
any Category 1 engines into a single engine family or you may group any
Category 2 engines into a single engine family. This also applies if
you are a post-manufacture marinizer modifying a base engine that has a
valid certificate of conformity for any kind of nonroad or heavy-duty
highway engine under this chapter.
    (3) The provisions of this paragraph (f) do not exempt any engines
from meeting the standards and requirements in subpart B of this part.
    (g) If you combine engines that are subject to different emission
standards into a single engine family under paragraph (f) of this
section, you must certify the engine family to the more stringent set
of standards for that model year.

Sec.  1042.235  Emission testing required for a certificate of
conformity.

    This section describes the emission testing you must perform to
show compliance with the emission standards in Sec.  1042.101(a). See
Sec.  1042.205(p) regarding emission testing related to the NTE
standards. See Sec. Sec.  1042.240 and 1042.245 and 40 CFR part 1065,
subpart E, regarding service accumulation before emission testing.
    (a) Select an emission-data engine from each engine family for
testing. For engines at or above 560 kW, you may use a development
engine that is equivalent in design to the engine being certified.
Using good engineering judgment, select the engine configuration most
likely to exceed an applicable emission standard over the useful life,
considering all exhaust emission constituents and the range of
installation options available to vessel manufacturers.
    (b) Test your emission-data engines using the procedures and
equipment specified in subpart F of this part.
    (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 from 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 specified adjustable ranges (see
Sec.  1042.115(d)).
    (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 or other
characteristics unrelated to emissions. You may also ask to add a
configuration subject to Sec.  1042.225.
    (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. For engines originally tested under the provisions
of 40 CFR part 94, you may consider those test procedures to be
equivalent to the procedures we specify in subpart F of this part.
    (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.

[[Page 37258]]

Sec.  1042.240  Demonstrating compliance with exhaust emission standards.

    (a) For purposes of certification, your engine family is considered
in compliance with the emission standards in Sec.  1042.101(a) if all
emission-data engines representing that family have test results
showing deteriorated emission levels at or below these standards. Note
that your FELs are considered to be the applicable emission standards
with which you must comply if you participate in the ABT program in
subpart H of this part.
    (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 for any pollutant.
    (c) To compare emission levels from the emission-data engine with
the applicable emission standards for Category 1 and Category 2
engines, apply deterioration factors to the measured emission levels
for each pollutant. Section 1042.245 specifies how to test your engine
to develop deterioration factors that represent the deterioration
expected in emissions over your engines' full useful life. Your
deterioration factors must take into account any available data from
in-use testing with similar engines. Small-volume engine manufacturers
and post-manufacture marinizers may use assigned deterioration factors
that we establish. Apply deterioration factors as follows:
    (1) Additive deterioration factor for exhaust emissions. Except as
specified in paragraph (c)(2) of this section, use an additive
deterioration factor for exhaust emissions. An additive deterioration
factor 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 engine at
the selected test point by adding the factor to the measured emissions.
If the deterioration factor is less than zero, use zero. Additive
deterioration factors must be specified to one more decimal place than
the applicable standard.
    (2) Multiplicative deterioration factor for exhaust emissions. Use
a multiplicative deterioration factor if good engineering judgment
calls for the deterioration factor for a pollutant to be the ratio of
exhaust emissions at the end of the useful life to exhaust emissions at
the low-hour test point. For example, if you use aftertreatment
technology that controls emissions of a pollutant proportionally to
engine-out emissions, it is often appropriate to use a multiplicative
deterioration factor. 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 deterioration factor is
less than one, use one. A multiplicative deterioration factor may not
be appropriate in cases where testing variability is significantly
greater than engine-to-engine variability. Multiplicative deterioration
factors must be specified to one more significant figure than the
applicable standard.
    (3) Deterioration factor for crankcase emissions. If your engine
vents crankcase emissions to the exhaust or to the atmosphere, you must
account for crankcase emission deterioration, using good engineering
judgment. You may use separate deterioration factors for crankcase
emissions of each pollutant (either multiplicative or additive) or
include the effects in combined deterioration factors that include
exhaust and crankcase emissions together for each pollutant.
    (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
NOX+HC standards, apply the deterioration factor to each
pollutant and then add the results before rounding.

Sec.  1042.245  Deterioration factors.

    For Category 1 and Category 2 engines, establish deterioration
factors, as described in Sec.  1042.240, to determine whether your
engines will meet emission standards for each pollutant throughout the
useful life. This section describes how to determine deterioration
factors, either with an engineering analysis, with pre-existing test
data, or with new emission measurements.
    (a) You may ask us to approve deterioration factors for an engine
family with established technology based on engineering analysis
instead of testing. Engines certified to a NOX+HC standard
or FEL greater than the Tier 3 NOX+HC standard are
considered to rely on established technology for gaseous emission
control, except that this does not include any engines that use
exhaust-gas recirculation or aftertreatment. In most cases,
technologies used to meet the Tier 1 and Tier 2 emission standards
would be considered to be established technology. We must approve your
plan to establish a deterioration factor under this paragraph (a)
before you submit your application for certification.
    (b) You may ask us to approve deterioration factors for an engine
family based on emission measurements from similar highway, stationary,
or nonroad engines (including locomotive engines or other marine
engines) if you have already given us these data for certifying the
other engines in the same or earlier model years. Use good engineering
judgment to decide whether the two engines are similar. We must approve
your plan to establish a deterioration factor under this paragraph (b)
before you submit your application for certification. We will approve
your request if you show us that the emission measurements from other
engines reasonably represent in-use deterioration for the engine family
for which you have not yet determined deterioration factors.
    (c) If you are unable to determine deterioration factors for an
engine family under paragraph (a) or (b) of this section, first get us
to approve a plan for determining deterioration factors based on
service accumulation and related testing. We will respond to your
proposed plan within 45 days of receiving your request. Your plan must
involve measuring emissions from an emission-data engine at least three
times, which are evenly spaced over the service-accumulation period
unless we specify otherwise, such that the resulting measurements and
calculations will represent the deterioration expected from in-use
engines over the full useful life. You may use extrapolation to
determine deterioration factors once you have established a trend of
changing emissions with age for each pollutant. You may use an engine
installed in a vessel to accumulate service hours instead of running
the engine only in the laboratory. You may perform maintenance on
emission-data engines as described in Sec.  1042.125 and 40 CFR part
1065, subpart E.
    (d) Include the following information in your application for
certification:
    (1) If you determine your deterioration factors based on 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 determine your deterioration factors based on
engineering analysis, explain why this is appropriate and include a
statement that all data, analyses, evaluations, and other information
you used are available for our review upon request.

[[Page 37259]]

    (3) 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.

Sec.  1042.250  Recordkeeping and reporting.

    (a) If you produce engines under any provisions of this part that
are related to production volumes, send the Designated Compliance
Officer a report within 30 days after the end of the model year
describing the total number of engines you produced in each engine
family. For example, if you use special provisions intended for small-
volume engine manufacturers, report your U.S.-directed production
volumes to show that you do not exceed the applicable limits.
    (b) 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.  1042.205 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 (valid and invalid), 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) 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.
    (d) 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.
    (e) Send us copies of any engine maintenance instructions or
explanations if we ask for them.

Sec.  1042.255  EPA decisions.

    (a) If we determine your application is complete and shows that the
engine family meets all the requirements of this part and the Clean Air
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 Clean Air 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 (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
Clean Air 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 as required under this part or
the Clean Air Act.
    (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.  1042.920).

Subpart D--Testing Production-line Engines

Sec.  1042.301  General provisions.

    (a) If you produce engines that are subject to the requirements of
this part, you must test them as described in this subpart, except as
follows:
    (1) Small-volume engine manufacturers may omit testing under this
subpart.
    (2) We may exempt Category 1 engine families with a projected U.S.-
directed production volume below 100 engines from routine testing under
this subpart. Request this exemption in your application for
certification and include your basis for projecting a production volume
below 100 units. You must promptly notify us if your actual production
exceeds 100 units during the model year. If you exceed the production
limit or if there is evidence of a nonconformity, we may require you to
test production-line engines under this subpart, or under 40 CFR part
1068, subpart D, even if we have approved an exemption under this
paragraph (a)(2).
    (3) [Reserved]
    (b) We may suspend or revoke your certificate of conformity for
certain engine families if your production-line engines do not meet the
requirements of this part or you do not fulfill your obligations under
this subpart (see Sec. Sec.  1042.325 and 1042.340).
    (c) Other requirements apply to engines that you produce. Other
regulatory provisions authorize us to suspend, revoke, or void your
certificate of conformity, or order recalls for engine families without
regard to whether they have passed these production-line testing
requirements. The requirements of this subpart do not affect our
ability to do selective enforcement audits, as described in 40 CFR part
1068. Individual engines in families that pass these production-line
testing requirements must also conform to all applicable regulations of
this part and 40 CFR part 1068.
    (d) You may use alternate programs or measurement methods for
testing production-line engines in the following circumstances:
    (1) [Reserved]
    (2) You may test your engines using the CumSum procedures specified
in 40 CFR part 1045 or 1051 instead of the procedures specified in this
subpart, except that the threshold for establishing quarterly or annual
test periods is based on U.S.-directed production volumes of 800
instead of 1600. This alternate program does not require prior approval.
    (3) You may ask to use another alternate program or measurement

[[Page 37260]]

method for testing production-line engines. In your request, you must
show us that the alternate program gives equal assurance that your
engines meet the requirements of this part. We may waive some or all of
this subpart's requirements if we approve your alternate program.
    (e) If you certify an engine family with carryover emission data,
as described in Sec.  1042.235(d), and these equivalent engine families
consistently pass the production-line testing requirements over the
preceding two-year period, you may ask for a reduced testing rate for
further production-line testing for that family. The minimum testing
rate is one engine per engine family. If we reduce your testing rate,
we may limit our approval to any number of model years. In determining
whether to approve your request, we may consider the number of engines
that have failed the emission tests.
    (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.

Sec.  1042.305  Preparing and testing production-line engines.

    This section describes how to prepare and test production-line
engines. You must assemble the test engine in a way that represents the
assembly procedures for other engines in the engine family. You must
ask us to approve any deviations from your normal assembly procedures
for other production engines in the engine family.
    (a) Test procedures. Test your production-line engines using the
applicable testing procedures in subpart F of this part to show you
meet the duty-cycle emission standards in subpart B of this part. The
not-to-exceed standards apply for this testing, but you need not do
additional testing to show that production-line engines meet the not-
to-exceed standards.
    (b) Modifying a test engine. Once an engine is selected for testing
(see Sec.  1042.310), you may adjust, repair, prepare, or modify it or
check its emissions only if one of the following is true:
    (1) You document the need for doing so in your procedures for
assembling and inspecting all your production engines and make the
action routine for all the engines in the engine family.
    (2) This subpart otherwise specifically allows your action.
    (3) We approve your action in advance.
    (c) Engine malfunction. If an engine malfunction prevents further
emission testing, ask us to approve your decision to either repair the
engine or delete it from the test sequence.
    (d) Setting adjustable parameters. Before any test, we may require
you to adjust any adjustable parameter on a Category 1 engine to any
setting within its physically adjustable range. We may adjust or
require you to adjust any adjustable parameter on a Category 2 engine
to any setting within its specified adjustable range.
    (1) We may require you to adjust idle speed outside the physically
adjustable range as needed, but 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.
    (2) We may specify adjustments within the physically adjustable
range or the specified adjustable range by considering their effect on
emission levels, as well as how likely it is someone will make such an
adjustment with in-use engines.
    (e) Stabilizing emission levels. You may stabilize emission levels
(or establish a Green Engine Factor for Category 2 engines) before you
test production-line engines, as follows:
    (1) You may stabilize emission levels by operating the engine in a
way that represents the way production engines will be used, using good
engineering judgment, for no more than the greater of two periods:
    (i) 300 hours.
    (ii) The number of hours you operated your emission-data engine for
certifying the engine family (see 40 CFR part 1065, subpart E, or the
applicable regulations governing how you should prepare your test engine).
    (2) For Category 2 engines, you may ask us to approve a Green
Engine Factor for each regulated pollutant for each engine family. Use
the Green Engine Factor to adjust measured emission levels to establish
a stabilized low-hour emission level.
    (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.  1042.345 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, 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.

Sec.  1042.310  Engine selection.

    (a) Determine minimum sample sizes as follows:
    (1) For Category 1 engines, the minimum sample size is one engine
or one percent of the projected U.S.-directed production volume for all
your Category 1 engine families, whichever is greater.
    (2) For Category 2 engines, the minimum sample size is one engine
or one percent of the projected U.S.-directed production volume for all
your Category 2 engine families, whichever is greater.
    (b) Randomly select one engine from each engine family early in the
model year. For further testing to reach the minimum sample size,
randomly select a proportional sample from each engine family, with
testing distributed evenly over the course of the model year, unless we
specify a different schedule for your tests. For example, we may
require you to disproportionately select engines from the early part of
a model year for a new engine model that has not previously been
subject to production-line testing.
    (c) For each engine that fails to meet emission standards, test two
engines from the same engine family from the next fifteen engines
produced or within seven days, whichever is later. If an engine fails
to meet emission standards for any pollutant, count it as a failing
engine under this paragraph (c).
    (d) Continue testing until one of the following things happens:
    (1) You test the number of engines specified in paragraphs (a) and
(c) of this section.
    (2) The engine family does not comply according to Sec.  1042.315
or you choose to declare that the engine family does not comply with
the requirements of this subpart.
    (3) You test 30 engines from the engine family.
    (e) You may elect to test more randomly chosen engines than we
require under this section.

Sec.  1042.315  Determining compliance.

    This section describes the pass-fail criteria for the production-
line testing requirements. We apply these criteria on an engine-family
basis. See Sec.  1042.320 for the requirements that apply to individual
engines that fail a production-line test.

[[Page 37261]]

    (a) Calculate your test results as follows:
    (1) Initial and final test results. Calculate the test results for
each engine. If you do several tests on an engine, calculate the
initial test results, then add them together and divide by the number
of tests for the final test results on that engine. Include the Green
Engine Factor to determine low-hour emission results, if applicable.
    (2) Final deteriorated test results. Apply the deterioration factor
for the engine family to the final test results (see Sec.  1042.240(c)).
    (3) Round deteriorated test results. Round the results to one more
decimal place than the applicable emission standard.
    (b) If a production-line engine fails to meet emission standards
and you test two additional engines as described in Sec.  1042.310,
calculate the average emission level for each pollutant for the three
engines. If the calculated average emission level for any pollutant
exceeds the applicable emission standard, the engine family fails the
production-line testing requirements of this subpart. Tell us within
ten working days if this happens. You may request to amend the
application for certification to raise the FEL of the engine family as
described in Sec.  1042.225(f).

Sec.  1042.320  What happens if one of my production-line engines fails
to meet emission standards?

    (a) If you have a production-line engine with final deteriorated
test results exceeding one or more emission standards (see Sec. 
1042.315(a)), the certificate of conformity is automatically suspended
for that failing engine. You must take the following actions before
your certificate of conformity can cover that engine:
    (1) Correct the problem and retest the engine to show it complies
with all emission standards.
    (2) Include in your written report a description of the test
results and the remedy for each engine (see Sec.  1042.345).
    (b) You may request to amend the application for certification to
raise the FEL of the entire engine family at this point (see Sec. 
1042.225).
    (c) For catalyst-equipped engines, you may ask us to allow you to
exclude an initial failed test if all of the following are true:
    (1) The catalyst was in a green condition when tested initially.
    (2) The engine met all emission standards when retested after
degreening the catalyst.
    (3) No additional emission-related maintenance or repair was
performed between the initial failed test and the subsequent passing test.

Sec.  1042.325  What happens if an engine family fails the production-
line testing requirements?

    (a) We may suspend your certificate of conformity for an engine
family if it fails under Sec.  1042.315. The suspension may apply to
all facilities producing engines from an engine family, even if you
find noncompliant engines only at one facility.
    (b) We will tell you in writing if we suspend your certificate in
whole or in part. We will not suspend a certificate until at least 15
days after the engine family fails. The suspension is effective when
you receive our notice.
    (c) Up to 15 days after we suspend the certificate for an engine
family, you may ask for a hearing (see Sec.  1042.920). If we agree
before a hearing occurs that we used erroneous information in deciding
to suspend the certificate, we will reinstate the certificate.
    (d) Section 1042.335 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.
    (e) You may request to amend the application for certification to
raise the FEL of the entire engine family as described in Sec. 
1051.225(f). We will approve your request if it is clear that you used
good engineering judgment in establishing the original FEL.

Sec.  1042.330  Selling engines from an engine family with a suspended
certificate of conformity.

    You may sell engines that you produce after we suspend the engine
family's certificate of conformity under Sec.  1042.315 only if one of
the following occurs:
    (a) You test each engine you produce and show it complies with
emission standards that apply.
    (b) We conditionally reinstate the certificate for the engine
family. We may do so if you agree to recall all the affected engines
and remedy any noncompliance at no expense to the owner if later
testing shows that the engine family still does not comply.

Sec.  1042.335  Reinstating suspended certificates.

    (a) Send us a written report asking us to reinstate your suspended
certificate. In your report, identify the reason for noncompliance,
propose a remedy for the engine family, and commit to a date for
carrying it out. In your proposed remedy include any quality control
measures you propose to keep the problem from happening again.
    (b) Give us data from production-line testing that shows the
remedied engine family complies with all the emission standards that apply.

Sec.  1042.340  When may EPA revoke my certificate under this subpart
and how may I sell these engines again?

    (a) We may revoke your certificate for an engine family in the
following cases:
    (1) You do not meet the reporting requirements.
    (2) Your engine family fails to comply with the requirements of
this subpart and your proposed remedy to address a suspended
certificate under Sec.  1042.325 is inadequate to solve the problem or
requires you to change the engine's design or emission control system.
    (b) To sell engines from an engine family with a revoked
certificate of conformity, you must modify the engine family and then
show it complies with the requirements of this part.
    (1) If we determine your proposed design change may not control
emissions for the engine's full useful life, we will tell you within
five working days after receiving your report. In this case we will
decide whether production-line testing will be enough for us to
evaluate the change or whether you need to do more testing.
    (2) Unless we require more testing, you may show compliance by
testing production-line engines as described in this subpart.
    (3) We will issue a new or updated certificate of conformity when
you have met these requirements.

Sec.  1042.345  Reporting.

    (a) Within 45 days of the end of each quarter in which production-
line testing occurs, send us a report with the following information:
    (1) Describe any facility used to test production-line engines and
state its location.
    (2) State the total U.S.-directed production volume and number of
tests for each engine family.
    (3) Describe how you randomly selected engines.
    (4) Describe each test engine, including the engine family's
identification and the engine's model year, build date, model number,
identification number, and number of hours of operation before testing.
Also describe how you developed and applied the Green Engine Factor, if
applicable.
    (5) Identify how you accumulated hours of operation on the engines and

[[Page 37262]]

describe the procedure and schedule you used.
    (6) Provide the test number; the date, time and duration of
testing; test procedure; initial test results before and after
rounding; final test results; and final deteriorated test results for
all tests. Provide the emission results for all measured pollutants.
Include information for both valid and invalid tests and the reason for
any invalidation.
    (7) Describe completely and justify any nonroutine adjustment,
modification, repair, preparation, maintenance, or test for the test
engine if you did not report it separately under this subpart. Include
the results of any emission measurements, regardless of the procedure
or type of engine.
    (8) Report on each failed engine as described in Sec.  1042.320.
    (9) Identify when the model year ends for each engine family.
    (b) We may ask you to add information to your written report so we
can determine whether your new engines conform with the requirements of
this subpart.
    (c) An authorized representative of your company must sign the
following statement:
    We submit this report under sections 208 and 213 of the Clean Air
Act. Our production-line testing conformed completely with the
requirements of 40 CFR part 1042. We have not changed production
processes or quality-control procedures for test engines in a way that
might affect emission controls. All the information in this report is
true and accurate to the best of my knowledge. I know of the penalties
for violating the Clean Air Act and the regulations. (Authorized
Company Representative)
    (d) Send electronic reports of production-line testing to the
Designated Compliance Officer using an approved information format. If
you want to use a different format, send us a written request with
justification for a waiver.
    (e) We will send copies of your reports to anyone from the public
who asks for them. See Sec.  1042.915 for information on how we treat
information you consider confidential.

Sec.  1042.350  Recordkeeping.

    (a) Organize and maintain your records as described in this
section. We may review your records at any time.
    (b) Keep records of your production-line testing for eight years
after you complete all the testing required for an engine family in a
model year. You may use any appropriate storage formats or media.
    (c) Keep a copy of the written reports described in Sec.  1042.345.
    (d) Keep the following additional records:
    (1) A description of all test equipment for each test cell that you
can use to test production-line engines.
    (2) The names of supervisors involved in each test.
    (3) The name of anyone who authorizes adjusting, repairing,
preparing, or modifying a test engine and the names of all supervisors
who oversee this work.
    (4) If you shipped the engine for testing, the date you shipped it,
the associated storage or port facility, and the date the engine
arrived at the testing facility.
    (5) Any records related to your production-line tests that are not
in the written report.
    (6) A brief description of any significant events during testing
not otherwise described in the written report or in this section.
    (7) Any information specified in Sec.  1042.345 that you do not
include in your written reports.
    (e) If we ask, you must give us projected or actual production
figures for an engine family. We may ask you to divide your production
figures by maximum engine power, displacement, fuel type, or assembly
plant (if you produce engines at more than one plant).
    (f) Keep a list of engine identification numbers for all the
engines you produce under each certificate of conformity. Give us this
list within 30 days if we ask for it.
    (g) We may ask you to keep or send other information necessary to
implement this subpart.

Subpart E--In-use Testing

Sec.  1042.401  General Provisions.

    We may perform in-use testing of any engine subject to the
standards of this part.

Subpart F--Test Procedures

Sec.  1042.501  How do I run a valid emission test?

    (a) Use the equipment and procedures for compression-ignition
engines in 40 CFR part 1065 to determine whether Category 1 and
Category 2 engines meet the duty-cycle emission standards in Sec. 
1042.101(a). Measure the emissions of all regulated pollutants as
specified in 40 CFR part 1065. Use the applicable duty cycles specified
in Sec.  1042.505.
    (b) Section 1042.515 describes the supplemental test procedures for
evaluating whether engines meet the not-to-exceed emission standards in
Sec.  1042.101(c).
    (c) Use the fuels and lubricants specified in 40 CFR part 1065,
subpart H, for all the testing we require in this part, except as
specified in Sec.  1042.515.
    (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 appropriate diesel fuel
specified in 40 CFR part 1065, subpart H, for emission testing. Unless
we specify otherwise, the appropriate diesel test fuel is the ultra
low-sulfur diesel fuel. If we allow you to use a test fuel with higher
sulfur levels, identify the test fuel in your application for
certification and ensure that the emission control information label is
consistent with your selection of the test fuel (see Sec. 
1042.135(c)(11)). For Category 2 engines, you may ask to use
commercially available diesel fuel similar but not necessarily
identical to the applicable fuel specified in 40 CFR part 1065, subpart
H; we will approve your request if you show us that it does not affect
your ability to demonstrate compliance with the applicable emission
standards.
    (3) For Category 1 and Category 2 engines that are expected to use
a type of fuel (or mixed fuel) other than diesel fuel (such as natural
gas, methanol, or residual fuel), use a commercially available fuel of
that type for emission testing. If an engine is designed to operate on
different fuels, we may (at our discretion) require testing on each
fuel. Propose test fuel specifications that take into account the
engine design and the properties of commercially available fuels. Describe
these test fuel specifications in the application for certification.
    (4) [Reserved]
    (d) You may use special or alternate procedures to the extent we
allow them under 40 CFR 1065.10.
    (e) 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.
    (f) Duty-cycle testing is limited to ambient temperatures of 20 to
30 [deg]C. Atmospheric pressure must be between 91.000 and 103.325 kPa,
and must be within &plusmn;5 percent of the value recorded at the
time of the last engine map. Testing may be performed with any ambient
humidity level. Correct duty-cycle NOX emissions for
humidity as specified in 40 CFR part 1065.

[[Page 37263]]

Sec.  1042.505  Testing engines using discrete-mode or ramped-modal
duty cycles.

    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 and compare with the established criteria as specified in 40
CFR 1065.514 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. You may extend the sampling time to improve
measurement accuracy of PM emissions, using good engineering judgment.
If you have a longer sampling time for PM emissions, calculate and
validate cycle statistics separately for the gaseous and PM sampling
periods.
    (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.
    (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 as specified in 40 CFR part 1065, subpart G.
    (b) Measure emissions by testing the engine on a dynamometer with
one of the following duty cycles (as specified) to determine whether it
meets the emission standards in Sec.  1042.101(a):
    (1) General cycle. Use the 4-mode duty cycle or the corresponding
ramped-modal cycle described in paragraph (a) of Appendix II of this
part for commercial propulsion marine engines that are used with (or
intended to be used with) fixed-pitch propellers, propeller-law
auxiliary engines, and any other engines for which the other duty
cycles of this section do not apply. Use this duty cycle also for
commercial variable-speed propulsion marine engines that are used with
(or intended to be used with) controllable-pitch propellers or with
electrically coupled propellers, unless these engines are not intended
for sustained operation (e.g., for at least 30 minutes) at all four
modes when installed in the vessel.
    (2) Recreational marine engines. Except as specified in paragraph
(b)(3) of this section, use the 5-mode duty cycle or the corresponding
ramped-modal cycle described in paragraph (b) of Appendix II of this
part for recreational marine engines with maximum engine power at or
above 37 kW.
    (3) Controllable-pitch and electrically coupled propellers. Use the
4-mode duty cycle or the corresponding ramped-modal cycle described in
paragraph (c) of Appendix II of this part for constant-speed propulsion
marine engines that are used with (or intended to be used with)
controllable-pitch propellers or with electrically coupled propellers.
Use this duty cycle also for variable-speed propulsion marine engines
that are used with (or intended to be used with) controllable-pitch
propellers or with electrically coupled propellers if the duty cycles
in paragraph (b)(1) and (b)(2) of this section do not apply.
    (4) Constant-speed auxiliary engines. Use the 5-mode duty cycle or
the corresponding ramped-modal cycle described in 40 CFR part 1039,
Appendix II, paragraph (a) for constant-speed auxiliary engines.
    (5) Variable-speed auxiliary engines. (i) Use the duty cycle specified
in paragraph (b)(1) of this section for propeller-law auxiliary engines.
    (ii) Use the 6-mode duty cycle or the corresponding ramped-modal
cycle described in 40 CFR part 1039, Appendix II, paragraph (b) for
variable-speed auxiliary engines with maximum engine power below 19 kW
that are not propeller-law engines.
    (iii) Use the 8-mode duty cycle or the corresponding ramped-modal
cycle described in 40 CFR part 1039, Appendix III, paragraph (c) for
variable-speed auxiliary engines with maximum engine power at or above
19 kW that are not propeller-law engines.
    (c) During idle mode, operate the engine at its warm idle speed as
described in 40 CFR part 1065.
    (d) For constant-speed engines whose design prevents full-load
operation for extended periods, you may ask for approval under 40 CFR
1065.10(c) to replace full-load operation with the maximum load for
which the engine is designed to operate for extended periods.
    (e) See 40 CFR part 1065 for detailed specifications of tolerances
and calculations.

Sec.  1042.515  Test procedures related to not-to-exceed standards.

    (a) This section describes the procedures to determine whether your
engines meet the not-to-exceed emission standards in Sec.  1042.101(c).
These procedures may include any normal engine operation and ambient
conditions that the engines may experience in use. Paragraphs (c)
through (e) of this section define the limits of what we will consider
normal engine operation and ambient conditions.
    (b) Measure emissions with one of the following procedures:
    (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. Use the equipment and procedures specified
in 40 CFR part 1065 to conduct laboratory testing.
    (2) Test the selected engines while they remain installed in a
vessel. Use the equipment and procedures specified in 40 CFR part 1065
subpart J, to conduct field testing. 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.
    (c) Engine testing may occur under the following ranges of ambient
conditions without correcting measured emission levels:
    (1) Atmospheric pressure must be between 96.000 and 103.325 kPa,
except that manufacturers may test at lower atmospheric pressures if
their test facility is located at an altitude that makes it impractical
to stay within this range. This pressure range is intended to allow
testing under most weather conditions at all altitudes up to 1,100 feet
above sea level.
    (2) Ambient air temperature must be between 13 and 35 [deg]C (or
between 13 [deg]C and 30 [deg]C for engines not drawing intake air
directly from a space that could be heated by the engine).
    (3) Ambient water temperature must be between 5 and 27 [deg]C.
    (4) Ambient humidity must be between 7.1 and 10.7 grams of moisture
per kilogram of dry air.
    (d) Engine testing may occur at any conditions expected during
normal operation but that are outside the conditions described in
paragraph (b) of this section, as long as measured values are corrected
to be equivalent to the nearest end of the specified range, using

[[Page 37264]]

good engineering judgment. Correct NOX emissions for
humidity as specified in 40 CFR part 1065, subpart G.
    (e) The sampling period may not begin until the engine has reached
stable operating temperatures. For example, this would include only
engine operation after starting and after the engine thermostat starts
modulating the engine's coolant temperature. The sampling period may
not include engine starting.
    (f) Apply the NTE standards specified in Sec.  1042.101(c) to an
engine family based on the zones and subzones corresponding to specific
duty cycles and engine types as defined in Appendix III of this part.
For an engine family certified to multiple duty cycles, the broadest
applicable NTE zone applies for that family at the time of
certification. Whenever an engine family is certified to multiple duty
cycles and a specific engine from that family is tested for NTE
compliance in use, determine the applicable NTE zone for that engine
according to its in-use application. An engine family's NTE zone may be
modified as follows:
    (1) You may ask us to approve a narrower NTE zone for an engine
family at the time of certification, based on information such as how
that engine family is expected to normally operate in use. For example,
if an engine family is always coupled to a pump or jet drive, the
engine might be able to operate only within a narrow range of engine
speed and power.
    (2) You may ask us to approve a Limited Testing Region (LTR). An
LTR is a region of engine operation, within the applicable NTE zone,
where you have demonstrated that your engine family operates for no
more than 5.0 percent of its normal in-use operation, on a time-
weighted basis. You must specify an LTR using boundaries based on
engine speed and power (or torque), where the LTR boundaries must
coincide with some portion of the boundary defining the overall NTE
zone. Any emission data collected within an LTR for a time duration
that exceeds 5.0 percent of the duration of its respective NTE sampling
period (as defined in paragraph (c)(3) of this section) will be
excluded when determining compliance with the applicable NTE standards.
Any emission data collected within an LTR for a time duration of 5.0
percent or less of the duration of the respective NTE sampling period
will be included when determining compliance with the NTE standards.
    (3) You must notify us if you design your engines for normal in-use
operation outside the applicable NTE zone. If we learn that normal in-
use operation for your engines includes other speeds and loads, we may
specify a broader NTE zone, as long as the modified zone is limited to
normal in-use operation for speeds greater than 70 percent of maximum
test speed and loads greater than 30 percent of maximum power at
maximum test speed (or 30 percent of maximum test torque for constant-
speed engines).
    (4) You may exclude emission data based on ambient or engine
parameter limit values as follows:
    (i) NOX catalytic aftertreatment minimum temperature. For an engine
equipped with a catalytic NOX aftertreatment system, exclude
NOX emission data that is collected when the exhaust
temperature is less than 250 [deg]C, as measured within 30 cm
downstream of the last NOX aftertreatment device. Where
there are parallel paths, measure the temperature 30 cm downstream of
the last NOX aftertreatment device in the path with the
greatest exhaust flow.
    (ii) Oxidizing aftertreatment minimum temperature. For an engine
equipped with an oxidizing catalytic aftertreatment system, exclude HC,
CO, and PM emission data that is collected when the exhaust temperature
is less than 250 [deg]C, as measured within 30 cm downstream of the
last oxidizing aftertreatment device. Where there are parallel paths,
measure the temperature 30 cm downstream of the last oxidizing
aftertreatment device in the path with the greatest exhaust flow.
    (iii) Other parameters. You may request our approval for other
minimum or maximum ambient or engine parameter limit values at the time
of certification.
    (g) For engines equipped with emission controls that include
discrete regeneration events, if a regeneration event occurs during the
NTE test, the averaging period must be at least as long as the time
between the events multiplied by the number of full regeneration events
within the sampling period. This requirement applies only for engines
that send an electronic signal indicating the start of the regeneration
event.

Sec.  1042.520  What testing must I perform to establish deterioration
factors?

    Sections 1042.240 and 1042.245 describe the required methods for
testing to establish deterioration factors for an engine family.

Sec.  1042.525  How do I adjust emission levels to account for
infrequently regenerating aftertreatment devices?

    This section describes how to adjust emission results from engines
using aftertreatment technology with infrequent regeneration events.
See paragraph (e) of this section for how to adjust ramped-modal
testing. See paragraph (f) of this section for how to adjust discrete-
mode testing. For this section, ``regeneration'' means an intended
event during which emission levels change while the system restores
aftertreatment performance. For example, exhaust gas temperatures may
increase temporarily to remove sulfur from adsorbers or to oxidize
accumulated particulate matter in a trap. For this section,
``infrequent'' refers to regeneration events that are expected to occur
on average less than once over the applicable transient duty cycle or
ramped-modal cycle, or on average less than once per typical mode in a
discrete-mode test.
    (a) Developing adjustment factors. Develop an upward adjustment
factor and a downward adjustment factor for each pollutant based on
measured emission data and observed regeneration frequency. Adjustment
factors should generally apply to an entire engine family, but you may
develop separate adjustment factors for different engine configurations
within an engine family. If you use adjustment factors for
certification, you must identify the frequency factor, F, from
paragraph (b) of this section in your application for certification and
use the adjustment factors in all testing for that engine family. You
may use carryover or carry-across data to establish adjustment factors
for an engine family, as described in Sec.  1042.235(d), consistent
with good engineering judgment. All adjustment factors for regeneration
are additive. Determine adjustment factors separately for different
test segments. For example, determine separate adjustment factors for
different modes of a discrete-mode steady-state test. You may use
either of the following different approaches for engines that use
aftertreatment with infrequent regeneration events:
    (1) You may disregard this section if regeneration does not
significantly affect emission levels for an engine family (or
configuration) or if it is not practical to identify when regeneration
occurs. If you do not use adjustment factors under this section, your
engines must meet emission standards for all testing, without regard to
regeneration.
    (2) If your engines use aftertreatment technology with extremely
infrequent regeneration and you are unable to apply the provisions of
this section, you may ask us to approve an alternate methodology to
account for regeneration events.

[[Page 37265]]

    (b) Calculating average adjustment factors. Calculate the average
adjustment factor (EFA) based on the following equation:

EFA = (F)(EFH) + (1-F)(EFL)

Where:
F = the frequency of the regeneration event during normal in-use
operation, expressed in terms of the fraction of equivalent tests
during which the regeneration occurs. You may determine F from in-
use operating data or running replicate tests. For example, if you
observe that the regeneration occurs 125 times during 1000 MW-hrs of
operation, and your engine typically accumulates 1 MW-hr per test, F
would be (125) / (1000) / (1) = 0.125.
EFH = Measured emissions from a test segment in which the
regeneration occurs.
EFL = Measured emissions from a test segment in which the
regeneration does not occur.

    (c) Applying adjustment factors. Apply adjustment factors based on
whether regeneration occurs during the test run. You must be able to
identify regeneration in a way that is readily apparent during all
testing.
    (1) If regeneration does not occur during a test segment, add an
upward adjustment factor to the measured emission rate. Determine the
upward adjustment factor (UAF) using the following equation:

UAF = EFA-EFL

    (2) If regeneration occurs or starts to occur during a test
segment, subtract a downward adjustment factor from the measured
emission rate. Determine the downward adjustment factor (DAF) using the
following equation:

DAF = EFH-EFA

    (d) Sample calculation. If EFL is 0.10 g/kW-hr,
EFH is 0.50 g/kW-hr, and F is 0.1 (the regeneration occurs
once for each ten tests), then:

EFA = (0.1)(0.5 g/kW-hr) + (1.0-0.1)(0.1 g/kW-hr) = 0.14 g/
kW-hr.
UAF = 0.14 g/kW-hr-0.10 g/kW-hr = 0.04 g/kW-hr.
DAF = 0.50 g/kW-hr-0.14 g/kW-hr = 0.36 g/kW-hr.

    (e) Ramped-modal testing. Develop a single sets of adjustment
factors for the entire test. If a regeneration has started but has not
been completed when you reach the end of a test, use good engineering
judgment to reduce your downward adjustments to be proportional to the
emission impact that occurred in the test.
    (f) Discrete-mode testing. Develop separate adjustment factors for
each test mode. If a regeneration has started but has not been
completed when you reach the end of the sampling time for a test mode
extend the sampling period for that mode until the regeneration is
completed.

Subpart G--Special Compliance Provisions

Sec.  1042.601  General compliance provisions for marine engines and vessels.

    Engine and vessel manufacturers, as well as owners, operators, and
rebuilders of engines and vessels 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 Clean Air Act. The provisions of 40 CFR part 1068
apply for compression-ignition marine engines as specified in that
part, subject to the following provisions:
    (a) The following prohibitions apply with respect to recreational
marine engines and recreational vessels:
    (1) Installing a recreational marine engine in a vessel that is not
a recreational vessel is a violation of 40 CFR 1068.101(a)(1).
    (2) For a vessel with an engine that is certified and labeled as a
recreational marine engine, using it in a manner inconsistent with its
intended use as a recreational vessel violates 40 CFR 1068.101(a)(1),
except as allowed by this chapter.
    (b) Subpart I of this part describes how the prohibitions of 40 CFR
1068.101(a)(1) apply for remanufactured engines. The provisions of 40
CFR 1068.105 do not allow the installation of a new remanufactured
engine in a vessel that is defined as a ``new vessel'' unless the
remanufactured engine is subject to the same standards as the standards
applicable to freshly manufactured engines of the required model year.
    (c) The provisions of 40 CFR 1068.120 apply when rebuilding marine
engines, except as specified in subpart I of this part. The following
additional requirements also apply when rebuilding marine engines
equipped with exhaust aftertreatment:
    (1) Follow all instructions from the engine manufacturer and
aftertreatment manufacturer for checking, repairing, and replacing
aftertreatment components. For example, you must replace the catalyst
if the catalyst assembly is stamped with a build date more than ten
years ago and the manufacturer's instructions state that catalysts over
ten years old must be replaced when the engine is rebuilt.
    (2) Measure pressure drop across the catalyst assembly to ensure
that it is neither higher nor lower than the manufacturer's
specifications and repair or replace exhaust-system components as
needed to bring the pressure drop within the manufacturer's specifications.
    (3) For engines equipped with exhaust sensors, verify that sensor
outputs are within the manufacturer's recommended range and repair or
replace any malfunctioning components (sensors, catalysts, or other
components).
    (d) The provisions of Sec.  1042.635 for the national security
exemption apply instead of 40 CFR 1068.225.
    (e) For replacement engines, apply the provisions of 40 CFR
1068.240 as described in Sec.  1042.615.
    (f) For the purpose of meeting the defect-reporting requirements in
40 CFR 1068.501, if you manufacture other nonroad engines that are
substantially similar to your marine engines, you may consider defects
using combined marine and non-marine families.
    (g) For a marine engine labeled as requiring the use of ultra low-
sulfur diesel fuel, is a violation of 40 CFR 1068.101(b)(1) to operate
it with higher-sulfur fuel. It is also a violation of 40 CFR
1068.101(b)(1) if an engine installer or vessel manufacturer fails to
follow the engine manufacturer's emission-related installation
instructions when installing a certified engine in a marine vessel.

Sec.  1042.605  Dressing engines already certified to other standards
for nonroad or heavy-duty highway engines for marine use.

    (a) General provisions. If you are an engine manufacturer
(including someone who marinizes a land-based engine), this section
allows you to introduce new marine engines into U.S. 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,
1033, 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, 1033, or 1039 for each engine to also be
a valid certificate of conformity under this part 1042 for its model
year, without a separate application for certification under the
requirements of this part 1042.
    (b) Vessel-manufacturer 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, 1033, or 1039 in a marine
vessel as long as you do not make any of the changes described in
paragraph (d)(3) of this section and you meet the requirements of
paragraph (e) of this section. If you modify the non-marine engine in
any of the ways

[[Page 37266]]

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.
    (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, 1033, or 1039. This
paragraph (c) applies to engine manufacturers, vessel manufacturers
that use such an engine, and all other persons as if the engine were
used in its originally intended application. The prohibited acts of 40
CFR 1068.101(a)(1) apply to these new engines and vessels; however, we
consider the certificate issued under 40 CFR part 86, 89, 92, 1033, or
1039 for each engine to also be a valid certificate of conformity under
this part 1042 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 85, 89, 92,
or 1068.
    (d) Specific criteria and 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) You must produce it by marinizing an engine covered by a valid
certificate of conformity from one of the following programs:
    (i) Heavy-duty highway engines (40 CFR part 86).
    (ii) Land-based compression-ignition nonroad engines (40 CFR part
89 or 1039).
    (iii) Locomotives (40 CFR part 92 or 1033). To be eligible for
dressing under this section, the engine must be from a locomotive
certified to standards that are at least as stringent as either the
standards applicable to new marine engines or freshly manufactured
locomotives in the model year that the engine is being dressed.
    (2) The engine must have the label required under 40 CFR part 86,
89, 92, 1033, or 1039.
    (3) You must not make any changes to the certified engine that
could reasonably be expected to increase its emissions. For example, if
you make any of the following changes to one of these engines, you do
not qualify for the engine dressing exemption:
    (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.
    (ii) Replacing an original turbocharger, except that small-volume
engine manufacturers may replace an original turbocharger on a
recreational engine with one that matches the performance of the
original turbocharger.
    (iii) Modify or design the marine engine cooling or aftercooling
system so that temperatures or heat rejection rates are outside the
original engine manufacturer's specified ranges.
    (4) You must show that fewer than 10 percent of the engine family's
total sales in the United States are used in marine applications. This
includes engines used in any application, without regard to which
company manufactures the vessel or equipment. Show this 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 confirm this based on your best
estimate of the original manufacturer's sales information.
    (e) Labeling and documentation. If you are an engine manufacturer
or vessel manufacturer using this exemption, you must do all of the
following:
    (1) Make sure the original engine label will remain clearly visible
after installation in the vessel.
    (2) Add a permanent supplemental label to the engine in a position
where it will remain clearly visible after installation in the vessel.
In your engine label, do the following:
    (i) Include the heading: ``Marine Engine Emission Control Information''.
    (ii) Include your full corporate name and trademark.
    (iii) State: ``This engine was marinized without affecting its
emission controls.''.
    (iv) State the date you finished marinizing the engine (month and year).
    (3) 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 for which you expect to use this
exemption in the coming year and describe your basis for meeting the
sales restrictions of paragraph (d)(4) of this section.
    (iii) State: ``We prepare each listed engine model for marine
application without making any changes that could increase its
certified emission levels, as described in 40 CFR 1042.605.''.
    (f) 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 1042 and the
certificate issued under 40 CFR part(s) 86, 89, 92, 1033, or 1039 will
not be deemed to also be a certificate issued under this part 1042.
Introducing these engines into U.S. commerce as marine engines without
a valid exemption or certificate of conformity under this part violates
the prohibitions in 40 CFR 1068.101(a)(1).
    (g) Data submission. (1) If you are both the original manufacturer
and marinizer of an exempted engine, you must send us emission test
data on the appropriate marine duty cycles. You can include the data in
your application for certification or in the letter described in
paragraph (e)(3) of this section.
    (2) If you are the original manufacturer of an exempted engine that
is marinized by a post-manufacture marinizer, you may be required to
send us emission test data on the appropriate marine duty cycles. If
such data are requested you will be allowed a reasonable amount of time
to collect the data.
    (h) Participation in averaging, banking and trading. Engines
adapted for marine use under this section may not generate or use
emission credits under this part 1042. These engines may generate
credits under the ABT provisions in 40 CFR part(s) 86, 89, 92, 1033, or
1039, as applicable. These engines must use emission credits under 40
CFR part(s) 86, 89, 92, 1033, or 1039 as applicable if they are
certified to an FEL that exceeds an emission standard.
    (i) Operator requirements. The requirements specified for vessel
manufacturers, owners, and operators in this subpart (including
requirements in 40 CFR part 1068) apply to these engines whether they
are certified under this part 1042 or another part as allowed by this
section.

Sec.  1042.610  Certifying auxiliary marine engines to land-based standards.

    This section applies to auxiliary marine engines that are identical
to certified land-based engines. See Sec.  1042.605 for provisions that
apply to propulsion marine engines or auxiliary marine engines that are
modified for marine applications.
    (a) General provisions. If you are an engine manufacturer, this
section allows you to introduce new marine engines into U.S. commerce
if they are already certified to the requirements that apply to
compression-ignition engines under

[[Page 37267]]

40 CFR part 89 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 89 or 1039 for each engine to also be a valid
certificate of conformity under this part 1042 for its model year,
without a separate application for certification under the requirements
of this part 1042.
    (b) Vessel-manufacturer provisions. If you are not an engine
manufacturer, you may install an engine certified for land-based
applications in a marine vessel as long as you meet all the qualifying
criteria and requirements specified in paragraphs (d) and (e) of this
section. If you modify the non-marine engine, we will consider you a
manufacturer of a new marine 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 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 part 89 or 1039. This paragraph (c) applies to engine
manufacturers, vessel manufacturers that use such an engine, and all
other persons as if the engine were used in its originally intended
application. The prohibited acts of 40 CFR 1068.101(a)(1) apply to
these new engines and vessels; however, we consider the certificate
issued under 40 CFR part 89 or 1039 for each engine to also be a valid
certificate of conformity under this part 1042 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 89 or 1068.
    (d) Qualifying criteria. 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) The marine engine 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) You must show that the number of auxiliary marine engines from
the engine family must be smaller than the number of land-based engines
from the engine family sold in the United States, 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.
    (e) Specific requirements. If you are an engine manufacturer or
vessel manufacturer using this exemption, you must do all of the following:
    (1) Make sure the original engine label will remain clearly visible
after installation in the vessel. This label or a supplemental label
must identify that the original certification is valid for auxiliary
marine applications.
    (2) Send a signed letter to the Designated Compliance Officer 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 and describe your basis for meeting the
sales restrictions of paragraph (d)(3) of this section.
    (iii) State: ``We produce each listed engine model for marine
application without making any changes that could increase its
certified emission levels, as described in 40 CFR 1042.610.''.
    (3) If you are the certificate holder, you must describe in your
application for certification how you plan to produce engines for both
land-based and auxiliary marine applications, including projected sales
of auxiliary marine engines to the extent this can be determined. 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.
    (f) 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 1042 and the
certificate issued under 40 CFR part 89 or 1039 will not be deemed to
also be a certificate issued under this part 1042. Introducing these
engines into U.S. commerce as marine engines without a valid exemption
or certificate of conformity under this part 1042 violates the
prohibitions in 40 CFR 1068.101(a)(1).
    (g) Participation in averaging, banking and trading. Engines using
this exemption may not generate or use emission credits under this part
1042. These engines may generate credits under the ABT provisions in 40
CFR part 89 or 1039, as applicable. These engines must use emission
credits under 40 CFR part 89 or 1039 as applicable if they are
certified to an FEL that exceeds an emission standard.
    (h) Operator requirements. The requirements specified for vessel
manufacturers, owners, and operators in this subpart (including
requirements in 40 CFR part 1068) apply to these engines whether they
are certified under this part 1042 or another part as allowed by this
section.

Sec.  1042.615  Replacement engine exemption.

    For replacement engines, apply the provisions of 40 CFR 1068.240 as
described in this section.
    (a) This paragraph (a) applies instead of the provisions of 40 CFR
1068.240(b)(3). The prohibitions in 40 CFR 1068.101(a)(1) do not apply
for a new replacement engine meeting Tier 3 standards if the engine
being replaced is a Tier 3 or earlier engine (this applies where new
engines would otherwise be subject to Tier 4 or later standards). For
other cases, the prohibitions in 40 CFR 1068.101(a)(1) do not apply to
a new replacement engine if all the following conditions are met:
    (1) You use good engineering judgment to determine that no engine
certified to the current requirements of this part is produced by any
manufacturer with the appropriate physical or performance
characteristics to repower the vessel.
    (2) You make a record of your determination for each replacement
engine with the following information and keep these records for eight
years:
    (i) If you determine that no engine certified to the current
requirements of this part is available with the appropriate performance
characteristics, explain why certified engines produced by you and
other manufacturers cannot be used as a replacement because they are
not similar to the engine being replaced in terms of power or speed.
    (ii) You may determine that all engines certified to the current
requirements of this part that have appropriate performance
characteristics are not available because they do not have the
appropriate physical characteristics. If this is the case, explain why
these certified engines produced by you and other manufacturers cannot
be used as a replacement because their weight or dimensions are
substantially different than those of the engine being replaced, or
because they will not fit within the vessel's engine compartment or
engine room.
    (iii) In evaluating appropriate physical or performance
characteristics, you may account for compatibility with vessel
components you would not

[[Page 37268]]

otherwise replace when installing a new engine, including transmissions
or reduction gears, drive shafts or propeller shafts, propellers,
cooling systems, operator controls, or electrical systems for
generators or indirect-drive configurations. If you make your
determination on this basis, you must identify the vessel components
that are incompatible with engines certified to current standards and
explain how they are incompatible and why it would be unreasonable to
replace them.
    (iv) In evaluating appropriate physical or performance
characteristics, you may account for compatibility in a set of two or
more propulsion engines on a vessel where only one of the engines needs
replacement, but only if each engine not needing replacement has
operated for less than 75 percent of its applicable useful life in
hours or years (see Sec.  1042.101). If any engine not otherwise
needing replacement exceeds this 75 percent threshold, your
determination must consider replacement of all the propulsion engines.
    (v) In addition to the determination specified in paragraph (a)(1)
of this section, you must make a separate determination for your own
product line addressing every tier of emission standards that is more
stringent than the emission standards for the engine being replaced.
For example, if the engine being replaced was built before the Tier 1
standards started to apply and engines of that size are currently
subject to Tier 3 standards, you must consider whether any Tier 1 or
Tier 2 engines that you produce have the appropriate physical and
performance characteristics for replacing the old engine; if you can
produce a Tier 2 engine with the appropriate physical and performance
characteristics, you must use it as the replacement engine.
    (3) You must notify us within 30 days after you ship each
replacement engine under this section. Your notification must include
all the following things and be signed by an authorized representative
of your company:
    (i) A copy of your records describing how you made the
determination described in paragraph (a)(2) of this section for this
particular engine.
    (ii) The total number of replacement engines you have shipped in
the applicable calendar year, from all your marine engine models.
    (iii) The following statement:
    I certify that the statements and information in the enclosed
document are true, accurate, and complete to the best of my knowledge.
I am aware that there are significant civil and criminal penalties for
submitting false statements and information, or omitting required
statements and information.
    (4) We may reduce the reporting and recordkeeping requirements in
this section.
    (b) Modifying a vessel to significantly increase its value within
six months after installing a replacement engine produced under this
section is a violation of 40 CFR 1068.101(a)(1).
    (c) We may void an exemption for an engine if we determine that any
of the conditions described in paragraph (a) of this section are not met.

Sec.  1042.620  Engines used solely for competition.

    The provisions of this section apply for new engines and vessels
built on or after January 1, 2009.
    (a) We may grant you an exemption from the standards and
requirements of this part for a new engine on the grounds that it is to
be used solely for competition. The requirements of this part, other
than those in this section, do not apply to engines that we exempt for
use solely for competition. The prohibitions in Sec.  1068.101(a)(1) do
not apply to engines exempted under this section.
    (b) We will exempt engines that we determine will be used solely
for competition. The basis of our determination is described in
paragraphs (c) and (d) of this section. Exemptions granted under this
section are good for only one model year and you must request renewal
for each subsequent model year. We will not approve your renewal
request if we determine the engine will not be used solely for competition.
    (c) Engines meeting all the following criteria are considered to be
used solely for competition:
    (1) Neither the engine nor any vessels containing the engine may be
displayed for sale in any public dealership or otherwise offered for
sale to the general public.
    (2) Sale of the vessel in which the engine is installed must be
limited to professional racing teams, professional racers, or other
qualified racers. Keep records documenting this, such as a letter
requesting an exempted engine.
    (3) The engine and the vessel in which it is installed must have
performance characteristics that are substantially superior to
noncompetitive models.
    (4) The engines are intended for use only as specified in paragraph
(e) of this section.
    (d) You may ask us to approve an exemption for engines not meeting
the applicable criteria listed in paragraph (c) of this section as long
as you have clear and convincing evidence that the engines will be used
solely for competition.
    (e) Engines will not be considered to be used solely for
competition if they are ever used for any recreational or other
noncompetitive purpose. This means that their use must be limited to
competition events sanctioned by the U.S. Coast Guard or another public
organization with authorizing permits for participating competitors.
Operation for such engines may include only racing events or trials to
qualify for racing events. Authorized attempts to set speed records
(and the associated official trials) are also considered racing events.
Any use of exempt engines in recreational events, such as poker runs
and lobsterboat races, is a violation of 40 CFR 1068.101(b)(4).
    (f) You must permanently label engines exempted under this section
to clearly indicate that they are to be used only for competition.
Failure to properly label an engine will void the exemption for that engine.
    (g) If we request it, you must provide us any information we need
to determine whether the engines or vessels are used solely for
competition. This would include documentation regarding the number of
engines and the ultimate purchaser of each engine. Keep these records
for five years.

Sec.  1042.625  Special provisions for engines used in emergency
applications.

    (a) Except as specified in paragraph (d) of this section, the
prohibitions in Sec.  1068.101(a)(1) do not apply to a new engine that
is subject to Tier 4 standards if the following conditions are met:
    (1) The engine is intended for installation in one of the following
vessels or applications:
    (i) A lifeboat approved by the U.S. Coast Guard under approval
series 160.135 (see for example 46 CFR 199.201(a)(1)), as long as such
a vessel is not also used as a launch or tender.
    (ii) A rescue boat approved by the U.S. Coast Guard under approval
series 160.156 (see for example 46 CFR 199.202(a)).
    (iii) Generator sets or other auxiliary equipment that qualify as
final emergency power sources under 46 CFR part 112.
    (2) The engine meets the Tier 3 emission standards specified in
Sec.  1042.101 as specified in 40 CFR 1068.265.
    (3) The engine is used only for its intended purpose, as specified
on the emission control information label.
    (b) Except as specified in paragraph (d) of this section, the
prohibitions in Sec.  1068.101(a)(1) do not apply to a new

[[Page 37269]]

engine that is subject to Tier 3 standards according to the following
provisions:
    (1) The engine must be intended for installation in a lifeboat or a
rescue boat as specified in paragraph (a)(1)(i) or (ii) of this section.
    (2) This exemption is available from the initial effective date for
the Tier 3 standards until the engine model (or one of comparable size,
weight, and performance) has been certified as complying with the Tier
3 standards and Coast Guard requirements.
    (3) The engine must meet the Tier 2 emission standards specified in
Appendix I of this part as specified in 40 CFR 1068.265.
    (c) If you introduce an engine into U.S. commerce under this
section, you must meet the labeling requirements in Sec.  1042.135, but
add one of the following statements instead of the compliance statement
in Sec.  1042.135(c)(10):
    (1) For lifeboats and rescue boats, add the following statement:
    THIS ENGINE DOES NOT COMPLY WITH CURRENT U.S. EPA EMISSION
STANDARDS UNDER 40 CFR 1042.625 AND IS FOR USE SOLELY IN LIFEBOATS OR
RESCUE BOATS (COAST GUARD APPROVAL SERIES 160.135 OR 160.156).
INSTALLATION OR USE OF THIS ENGINE IN ANY OTHER APPLICATION MAY BE A
VIOLATION OF FEDERAL LAW SUBJECT TO CIVIL PENALTY.
    (2) For engines serving as final emergency power sources, add the
following statement:
    THIS ENGINE DOES NOT COMPLY WITH CURRENT U.S. EPA EMISSION
STANDARDS UNDER 40 CFR 1042.625 AND IS FOR USE SOLELY IN EMERGENCY
EQUIPMENT REGULATED BY 46 CFR 112. INSTALLATION OR USE OF THIS ENGINE
IN ANY OTHER APPLICATION MAY BE A VIOLATION OF FEDERAL LAW SUBJECT TO
CIVIL PENALTY.
    (d) Introducing into commerce a vessel containing an engine
exempted under this section violates the prohibitions in 40 CFR
1068.101(a)(1) where the vessel is not covered by paragraph (a) or (b)
of this section, unless it is exempt under a different provision.
Similarly, using such an engine or vessel as something other than a
lifeboat, rescue boat, or emergency engine as specified in paragraph
(a)(1) of this section violates the prohibitions in 40 CFR
1068.101(a)(1), unless it is exempt under a different provision.

Sec.  1042.630  Personal-use exemption.

    This section applies to individuals who manufacture vessels for
personal use. If you and your vessel meet all the conditions of this
section, the vessel and its engine are considered to be exempt from the
standards and requirements of this part that apply to new engines and
new vessels. The prohibitions in Sec.  1068.101(a)(1) do not apply to
engines exempted under this section. For example, you may install an
engine that was not certified as a marine engine.
    (a) The vessel may not be manufactured from a previously certified
vessel, nor may it be manufactured from a partially complete vessel
that is equivalent to a certified vessel. The vessel must be
manufactured primarily from unassembled components, but may incorporate
some preassembled components. For example, fully preassembled steering
assemblies may be used. You may also power the vessel with an engine
that was previously used in a highway or land-based nonroad application.
    (b) The vessel may not be sold within five years after the date of
final assembly.
    (c) No individual may manufacture more than one vessel in any ten-
year period under this exemption.
    (d) You may not use the vessel in any revenue-generating service or
for any other commercial purpose, except that you may use a vessel
exempt under this section for commercial fishing that you personally do.
    (e) This exemption may not be used to circumvent the requirements
of this part or the requirements of the Clean Air Act. For example,
this exemption would not cover a case in which a person sells an almost
completely assembled vessel to another person, who would then complete
the assembly. This would be considered equivalent to the sale of the
complete new vessel. This section also does not allow engine
manufacturers to produce new engines that are exempt from emission
standards and it does not provide an exemption from the prohibition
against tampering with certified engines.
    (f) The vessel must be a vessel that is not classed or subject to
Coast Guard inspections or surveys.

Sec.  1042.635  National security exemption.

    The standards and requirements of this part and prohibitions in
Sec.  1068.101(a)(1) do not apply to engines exempted under this section.
    (a) You are eligible for the exemption for national security only
if you are a manufacturer.
    (b) Your engine is exempt without a request if it will be used or
owned by an agency of the federal government responsible for national
defense, where the vessel has armor, permanently attached weaponry,
specialized electronic warfare systems, unique stealth performance
requirements, and/or unique combat maneuverability requirements.
    (c) You may request a national security exemption for engines not
meeting the conditions of paragraph (b) of this section, as long as
your request is endorsed by an agency of the federal government
responsible for national defense. In your request, explain why you need
the exemption.
    (d) Add a legible label, written in English, to all engines
exempted under this section. The label must be permanently secured to a
readily visible part of the engine needed for normal operation and not
normally requiring replacement, such as the engine block. This label
must include at least the following items:
    (1) The label heading ``EMISSION CONTROL INFORMATION''.
    (2) Your corporate name and trademark.
    (3) Engine displacement, family identification, and model year of
the engine (as applicable), or whom to contact for further information.
    (4) The statement ``THIS ENGINE HAS AN EXEMPTION FOR NATIONAL
SECURITY UNDER 40 CFR 1042.635.''.

Sec.  1042.640  Special provisions for 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.  1042.135(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. 
1042.120. 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.
    (c) You remain responsible for meeting all the requirements of this
chapter, including warranty and defect-reporting provisions.

Sec.  1042.650  Migratory vessels.

    The provisions of this section address concerns for vessel owners
related to extended use of vessels with Tier 4 engines outside the
United States where ultra low-sulfur diesel fuel is not available.
    (a) Temporary exemption. A vessel owner may ask us for a temporary

[[Page 37270]]

exemption from the tampering prohibition in 40 CFR 1068.101(b)(1) for a
vessel if it will operate only in areas outside the United States where
ULSD is not available. In your request, describe where the vessel will
operate, how long it will operate there, why ULSD will be unavailable,
and how you will modify the engine, including its emission controls. If
we approve your request, you may modify the engine, but only as needed
to disable or remove the emission controls needed for meeting the Tier
4 standards. You must return the engine to its original certified
configuration before the vessel returns to the United States to avoid
violating the tampering prohibition in 40 CFR 1068.101(b)(1). We may
set additional conditions to prevent circumvention of the provisions of
this part.
    (b) SOLAS exemption. We may approve a permanent exemption from the
prohibitions in 40 CFR 1068.101(a)(1) for an engine that is subject to
Tier 4 standards as described in this paragraph (b).
    (1) Vessel owners may ask for a permanent exemption from the Tier 4
standards for an engine that will be installed on vessels that will
operate for extended periods outside the United States, provided they
demonstrate all of the following are true:
    (i) Prior to introduction into service, the vessel will comply with
applicable certification requirements for international safety pursuant
to the U.S. Coast Guard and the International Convention for the
Protection of Life at Sea (SOLAS). The vessel owner must maintain
compliance with these requirements for the life of the exempted engine.
    (ii) The vessel will be used in areas outside of the United States
where ULSD will not be available.
    (iii) The mix of vessels with engines certified to Tier 3 or
earlier standards in the owner's current fleet and the owner's current
business operation of those vessels makes the exemption necessary. Note
that because of the large fraction of pre-Tier 4 engines in the fleet
prior to 2021, a request for a Tier 4 exemption prior to that year must
clearly demonstrate that unusual circumstances apply.
    (2) An engine exempted under this paragraph (b) must meet the Tier
3 emission standards described in Sec.  1402.101, subject to the
procedural requirements of 40 CFR 1068.265.
    (3) If you introduce an engine into U.S. commerce under this
section, you must meet the labeling requirements in Sec.  1042.135, but
add the following statement instead of the compliance statement in
Sec.  1042.135(c)(10):
    THIS ENGINE DOES NOT COMPLY WITH CURRENT U.S. EPA EMISSION
STANDARDS UNDER 40 CFR 1042.650 AND IS FOR USE SOLELY IN SOLAS VESSELS.
INSTALLATION OR USE OF THIS ENGINE IN ANY OTHER APPLICATION MAY BE A
VIOLATION OF FEDERAL LAW SUBJECT TO CIVIL PENALTY.
    (4) Operating a vessel containing an engine exempted under this
paragraph (b) violates the prohibitions in 40 CFR 1068.101(a)(1) if the
vessel in not in full compliance with applicable requirements for
international safety specified in paragraph (b)(1)(i) of this section.
    (c) Vessels less than 500 gross tons. In unusual circumstances for
vessels less than 500 gross tons, we may approve a vessel owner's
request for a permanent exemption from the prohibitions in 40 CFR
1068.101(a)(1) for an engine that is subject to Tier 4 standards that
will operate for extended periods outside the United States without it
being in compliance with applicable certification requirements for
international safety. We may set appropriate additional conditions on
such exemptions, and may void the exemption if those conditions are not met.

Sec.  1042.660  Requirements for vessel manufacturers, owners, and operators.

    (a) The provisions of 40 CFR part 94, subpart K, apply to
manufacturers, owners, and operators of marine vessels that contain
Category 3 engines subject to the provisions of 40 CFR part 94, subpart A.
    (b) For vessels equipped with emission controls requiring the use
of specific fuels, lubricants, or other fluids, owners and operators
must comply with the manufacturer/remanufacturer's specifications for
such fluids when operating the vessels. Failure to comply with the
requirements of this paragraph is a violation of 40 CFR 1068.101(b)(1).
    (c) For vessels equipped with SCR systems requiring the use of urea
or other reductants, owners and operators must report to us within 30
days any operation of such vessels without the appropriate reductant.
Failure to comply with the requirements of this paragraph is a
violation of 40 CFR 1068.101(a)(2).

Subpart H--Averaging, Banking, and Trading for Certification

Sec.  1042.701  General provisions.

    (a) You may average, bank, and trade (ABT) emission credits for
purposes of certification as described in this subpart to show
compliance with the standards of this part. Participation in this
program is voluntary.
    (b) The definitions of subpart J of this part apply to this
subpart. The following definitions also apply:
    (1) Actual emission credits means emission credits you have
generated that we have verified by reviewing your final report.
    (2) Applicable emission standard means an emission standard that is
specified in subpart B of this part. Note that for other subparts,
``applicable emission standard'' is defined to also include FELs.
    (3) Averaging set means a set of engines in which emission credits
may be exchanged only with other engines in the same averaging set.
    (4) Broker means any entity that facilitates a trade of emission
credits between a buyer and seller.
    (5) Buyer means the entity that receives emission credits as a
result of a trade.
    (6) Reserved emission credits means emission credits you have
generated that we have not yet verified by reviewing your final report.
    (7) Seller means the entity that provides emission credits during a
trade.
    (8) Standard means the emission standard that applies under subpart
B of this part for engines not participating in the ABT program of this
subpart.
    (9) Trade means to exchange emission credits, either as a buyer or
seller.
    (c) Emission credits may be exchanged only within an averaging set.
Except as specified in paragraph (d) of this section, the following
criteria define the applicable averaging sets:
    (1) Recreational engines.
    (2) Commercial Category 1 engines.
    (3) Category 2 engines.
    (d) Emission credits generated by commercial Category 1 engine
families may be used for compliance by Category 2 engine families. Such
credits must be discounted by 25 percent.
    (e) You may not use emission credits generated under this subpart
to offset any emissions that exceed an FEL or standard. This applies
for all testing, including certification testing, in-use testing,
selective enforcement audits, and other production-line testing.
However, if emissions from an engine exceed an FEL or standard (for
example, during a selective enforcement audit), you may use emission
credits to recertify the engine family with a higher FEL that applies
only to future production.
    (f) Engine families that use emission credits for one or more
pollutants may not generate positive emission credits for another pollutant.
    (g) Emission credits may be used in the model year they are
generated or in

[[Page 37271]]

future model years. Emission credits may not be used for past model
years.
    (h) You may increase or decrease an FEL during the model year by
amending your application for certification under Sec.  1042.225.
    (i) You may use NOX+HC credits to show compliance with a
NOX emission standard or use NOX credits to show
compliance with a NOX+HC emission standard.

Sec.  1042.705  Generating and calculating emission credits.

    The provisions of this section apply separately for calculating
emission credits for NOX, NOX+HC, or PM.
    (a) For each participating family, calculate positive or negative
emission credits relative to the otherwise applicable emission
standard. Calculate positive emission credits for a family that has an
FEL below the standard. Calculate negative emission credits for a
family that has an FEL above the standard. Sum your positive and
negative credits for the model year before rounding. Round calculated
emission credits to the nearest kilogram (kg), using consistent units
throughout the following equation:

Emission credits (kg) = (Std - FEL) x (Volume) x (Power) x (LF) x (UL)
x (10-3)

Where:

Std = The emission standard, in g/kW-hr.
FEL = The family emission limit for the engine family, in g/kW-hr.
Volume = The number of engines eligible to participate in the
averaging, banking, and trading program within the given engine
family during the model year, as described in paragraph (c) of this section.
Power = The average value of maximum engine power of all the engine
configurations within an engine family, calculated on a production-
weighted basis, in kilowatts.
LF = Load factor. Use 0.69 for propulsion marine engines and 0.51
for auxiliary marine engines. We may specify a different load factor
if we approve the use of special test procedures for an engine family
under 40 CFR 1065.10(c)(2), consistent with good engineering judgment.
UL = The useful life for the given engine family, in hours.

    (b) [Reserved]
    (c) In your application for certification, base your showing of
compliance on projected production volumes for engines whose point of
first retail sale is in the United States. As described in Sec. 
1042.730, compliance with the requirements of this subpart is
determined at the end of the model year based on actual production
volumes for engines whose point of first retail sale is in the United
States. Do not include any of the following engines to calculate
emission credits:
    (1) Engines permanently exempted under subpart G of this part or
under 40 CFR part 1068.
    (2) Exported engines.
    (3) Engines not subject to the requirements of this part, such as
those excluded under Sec.  1042.5.
    (4) [Reserved]
    (5) Any other engines, where we indicate elsewhere in this part
1042 that they are not to be included in the calculations of this subpart.

Sec.  1042.710  Averaging emission credits.

    (a) Averaging is the exchange of emission credits among your engine
families.
    (b) You may certify one or more engine families to an FEL above the
emission standard, subject to the FEL caps and other provisions in
subpart B of this part, if you show in your application for
certification that your projected balance of all emission-credit
transactions in that model year is greater than or equal to zero.
    (c) If you certify an engine family to an FEL that exceeds the
otherwise applicable emission standard, you must obtain enough emission
credits to offset the engine family's deficit by the due date for the
final report required in Sec.  1042.730. The emission credits used to
address the deficit may come from your other engine families that
generate emission credits in the same model year, from emission credits
you have banked, or from emission credits you obtain through trading.

Sec.  1042.715  Banking emission credits.

    (a) Banking is the retention of emission credits by the
manufacturer generating the emission credits for use in averaging or
trading in future model years.
    (b) You may use banked emission credits from the previous model
year for averaging or trading before we verify them, but we may revoke
these emission credits if we are unable to verify them after reviewing
your reports or auditing your records.
    (c) Reserved credits become actual emission credits only when we
verify them in reviewing your final report.

Sec.  1042.720  Trading emission credits.

    (a) Trading is the exchange of emission credits between
manufacturers. You may use traded emission credits for averaging,
banking, or further trading transactions.
    (b) You may trade actual emission credits as described in this
subpart. You may also trade reserved emission credits, but we may
revoke these emission credits based on our review of your records or
reports or those of the company with which you traded emission credits.
You may trade banked credits to any certifying manufacturer.
    (c) If a negative emission credit balance results from a
transaction, both the buyer and seller are liable, except in cases we
deem to involve fraud. See Sec.  1042.255(e) for cases involving fraud.
We may void the certificates of all engine families participating in a
trade that results in a manufacturer having a negative balance of
emission credits. See Sec.  1042.745.

Sec.  1042.725  Information required for the application for certification.

    (a) You must declare in your application for certification your
intent to use the provisions of this subpart for each engine family
that will be certified using the ABT program. You must also declare the
FELs you select for the engine family for each pollutant for which you
are using the ABT program. Your FELs must comply with the
specifications of subpart B of this part, including the FEL caps. FELs
must be expressed to the same number of decimal places as the emission
standards.
    (b) Include the following in your application for certification:
    (1) A statement that, to the best of your belief, you will not have
a negative balance of emission credits for any averaging set when all
emission credits are calculated at the end of the year.
    (2) Detailed calculations of projected emission credits (positive
or negative) based on projected production volumes.

Sec.  1042.730  ABT reports.

    (a) If any of your engine families are certified using the ABT
provisions of this subpart, you must send an end-of-year report within
90 days after the end of the model year and a final report within 270
days after the end of the model year. We may waive the requirement to
send the end-of-year report, as long as you send the final report on time.
    (b) Your end-of-year and final reports must include the following
information for each engine family participating in the ABT program:
    (1) Engine-family designation.
    (2) The emission standards that would otherwise apply to the engine
family.
    (3) The FEL for each pollutant. If you changed an FEL during the
model year, identify each FEL you used and calculate the positive or
negative emission credits under each FEL. Also, describe how the FEL
can be identified for each engine you produced. For example, you might
keep a list of engine

[[Page 37272]]

identification numbers that correspond with certain FEL values.
    (4) The projected and actual production volumes for the model year
with a point of first retail sale in the United States, as described in
Sec.  1042.705(c). If you changed an FEL during the model year,
identify the actual production volume associated with each FEL.
    (5) Maximum engine power for each engine configuration, and the
production-weighted average engine power for the engine family.
    (6) Useful life.
    (7) Calculated positive or negative emission credits for the whole
engine family. Identify any emission credits that you traded, as
described in paragraph (d)(1) of this section.
    (c) Your end-of-year and final reports must include the following
additional information:
    (1) Show that your net balance of emission credits from all your
participating engine families in each averaging set in the applicable
model year is not negative.
    (2) State whether you will retain any emission credits for banking.
    (3) State that the report's contents are accurate.
    (d) If you trade emission credits, you must send us a report within
90 days after the transaction, as follows:
    (1) Sellers must include the following information in their report:
    (i) The corporate names of the buyer and any brokers.
    (ii) A copy of any contracts related to the trade.
    (iii) The engine families that generated emission credits for the
trade, including the number of emission credits from each family.
    (2) Buyers must include the following information in their report:
    (i) The corporate names of the seller and any brokers.
    (ii) A copy of any contracts related to the trade.
    (iii) How you intend to use the emission credits, including the
number of emission credits you intend to apply to each engine family
(if known).
    (e) Send your reports electronically to the Designated Compliance
Officer using an approved information format. If you want to use a
different format, send us a written request with justification for a
waiver.
    (f) Correct errors in your end-of-year report or final report as
follows:
    (1) You may correct any errors in your end-of-year report when you
prepare the final report, as long as you send us the final report by
the time it is due.
    (2) If you or we determine within 270 days after the end of the
model year that errors mistakenly decreased your balance of emission
credits, you may correct the errors and recalculate the balance of
emission credits. You may not make these corrections for errors that
are determined more than 270 days after the end of the model year. If
you report a negative balance of emission credits, we may disallow
corrections under this paragraph (f)(2).
    (3) If you or we determine anytime that errors mistakenly increased
your balance of emission credits, you must correct the errors and
recalculate the balance of emission credits.

Sec.  1042.735  Recordkeeping.

    (a) You must organize and maintain your records as described in
this section. We may review your records at any time.
    (b) Keep the records required by this section for eight years after
the due date for the end-of-year report. You may not use emission
credits on any engines if you do not keep all the records required
under this section. You must therefore keep these records to continue
to bank valid credits. 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.
    (c) Keep a copy of the reports we require in Sec.  1042.730.
    (d) Keep the following additional records for each engine you
produce that generates or uses emission credits under the ABT program:
    (1) Engine family designation.
    (2) Engine identification number. You may identify these numbers as
a range.
    (3) FEL and useful life. If you change the FEL after the start of
production, identify the date that you started using the new FEL and
give the engine identification number for the first engine covered by
the new FEL.
    (4) Maximum engine power.
    (5) Purchaser and destination.
    (e) We may require you to keep additional records or to send us
relevant information not required by this section, as allowed under the
Clean Air Act.

Sec.  1042.745  Noncompliance.

    (a) For each engine family participating in the ABT program, the
certificate of conformity is conditional upon full compliance with the
provisions of this subpart during and after the model year. You are
responsible to establish to our satisfaction that you fully comply with
applicable requirements. We may void the certificate of conformity for
an engine family if you fail to comply with any provisions of this
subpart.
    (b) You may certify your engine family to an FEL above an emission
standard based on a projection that you will have enough emission
credits to offset the deficit for the engine family. However, we may
void the certificate of conformity if you cannot show in your final
report that you have enough actual emission credits to offset a deficit
for any pollutant in an engine family.
    (c) We may void the certificate of conformity for an engine family
if you fail to keep records, send reports, or give us information we
request.
    (d) You may ask for a hearing if we void your certificate under
this section (see Sec.  1042.920).

Subpart I--Special Provisions for Remanufactured Marine Engines

Sec.  1042.801  General provisions.

    This section describes how the provisions of this part 1042 apply
for certain remanufactured marine engines.
    (a) The requirements of this subpart apply for remanufactured Tier
2 and earlier commercial marine engines at or above 600 kW, excluding
those engines originally manufactured before 1973. Note that the
requirements of this subpart do not apply for engines below 600 kW,
engines installed on recreational vessels, or Tier 3 and later engines.
    (b) Any person meeting the definition of ``remanufacturer'' in
Sec.  1042.901 may apply for a certificate of conformity for a
remanufactured engine family.
    (c) The rebuilding requirements of 40 CFR 1068.120 do not apply to
remanufacturing of engines using a certified remanufacturing system
under this subpart. However, the requirements of 40 CFR 1068.120 do
apply to all other remanufacturing of engines.
    (d) Unless specified otherwise, engines certified under this
subpart are also subject to the other requirements of this part.
    (e) For remanufactured engines required to have a valid certificate
of conformity, placing a new marine engine back into service following
remanufacturing is a violation of 40 CFR 1068.101(a)(1), unless it has
a valid certificate of conformity for its model year and the required
label.
    (f) Remanufacturing systems that require a fuel change or use of a
fuel additive may be certified under this part. However, they are not
considered to be ``available'' with respect to triggering the
requirement for an engine to be covered by a certificate of conformity
under Sec.  1042.815. The following provisions apply:

[[Page 37273]]

    (i) Only fuels and additives registered under 40 CFR part 79 may be
used under this paragraph.
    (ii) You must demonstrate in your application that the fuel or
additive will actually be used by operators, including a description of
how the vessels and dispensing tanks will be labeled. We may require
you to provide the labels to the operators.
    (iii) You must also describe analytical methods that can be used by
EPA or others to verify that fuel meets your specifications.
    (iv) You must provide clear instructions to the operators
specifying that they may only use the specified fuel/additive, label
their vessels and fuel dispensing tanks, and keep records of their use
of the fuel/additive in order for their engine to be covered by your
certificate. Use of the incorrect fuel (or fuel without the specified
additive) or any other failure to comply with the requirements of this
paragraph is a violation of 40 CFR 1068.101(b)(1).
    (g) Vessels equipped with emission controls as part of a state or
local retrofit program prior to January 1, 2017 are exempt from the
requirements of this subpart, as specified in this paragraph (g).
    (1) This exemption only applies for retrofit programs sponsored by
a state government (or one of its political subdivisions) for the
purpose of reducing emissions. The exemption does not apply where the
sponsoring government specifies that inclusion in the retrofit program
is not intended to provide an exemption from the requirements of this
subpart.
    (2) The prohibitions against tampering and defeat devices in 40 CFR
1068.101(b) and the rebuilding requirements in 40 CFR 1068.120 apply
for the exempt engines in the same manner as if they were covered by a
certificate.
    (3) Vessel owners must request an exemption prior to
remanufacturing the engine. Your request must include documentation
that your vessel has been retrofitted consistent with the
specifications of paragraph (g)(1) of this section, and a signed
statement declaring that to be true. Except for the initial request for
a specific vessel and a specific retrofit, you may consider your
request to be approved unless we notify you otherwise within 30 days of
the date that we receive your request.

Sec.  1042.810   Requirements for owner/operators and installers during
remanufacture.

    This section describes how the remanufacturing regulations affect
owner/operators and installers for engines subject to this subpart.
    (a) See the definition of ``remanufacture'' in Sec.  1042.901 to
determine if you are remanufacturing your engine. (Note: Replacing
cylinders one at a time may qualify as remanufacturing, depending on
the interval between replacement.)
    (b) See the definition of ``new marine engine'' in Sec.  1042.901
to determine if remanufacturing your engine makes it subject to the
requirements of this part. If the engine is considered to be new, it is
subject to the certification requirements of this subpart, unless it is
exempt under subpart G of this part.
    (c) Your engine is not subject to the standards of this part if we
determine that no certified remanufacturing system is available for
your engine as described in Sec.  1042.815. For engines that are
remanufactured during multiple events within a five-year period, you
are not required to use a certified system until all of your engine's
cylinders have been replaced after the system became available. For
example, if you remanufacture your 16-cylinder engine by replacing four
cylinders each January and a system becomes available for your engine
June 1, 2010, your engine must be in a certified configuration when you
replace four cylinders in January of 2014. At that point, all 16
cylinders would have been replaced after June 1, 2010.
    (d) You may comply with the certification requirements of this part
for your remanufactured engine by either obtaining your own certificate
of conformity as specified in subpart C of this part or by having a
certifying remanufacturer include your engine under its certificate of
conformity. In either case, your remanufactured engine must be covered
by a certificate before it is reintroduced into service.
    (e) Contact a certifying remanufacturer to have your engine
included under its certificate of conformity. You must comply with the
certificate holder's emission-related installation instructions.

Sec.  1042.815   Demonstrating availability.

    (a) A certified remanufacturing system is considered to be
available for a specific engine only if EPA has certified the
remanufacturing system as being in compliance with the provisions of
this part and the certificate holder has demonstrated during
certification that the system meets the criteria of this paragraph (a).
We may issue a certificate for a remanufacturing system that does not
meet these criteria, but such systems would not be considered available.
    (1) The engine configuration must be included in the engine family
for the remanufacturing system.
    (2) The total marginal cost of the remanufacturing system, as
calculated under paragraph (c) of this section, must be less than
$45,000 per ton of PM reduction.
    (3) It must be possible to obtain and install the remanufacturing
system in a timely manner consistent with normal remanufacturing
procedures. For example, a remanufacturing system would generally not
be considered to be available if it required that the engine be removed
from the vessel and shipped to a factory to be remanufactured.
    (4) The remanufacturing system may result in increased maintenance
costs, provided the incremental maintenance costs are included in the
total costs. The remanufacturing system may not adversely affect engine
reliability or power. Note that owner/operators may ask us to determine
that a remanufacturing system is not considered available for their
vessels because of excessive costs under Sec.  1042.850.
    (b) We will maintain a list of available remanufacturing systems. A
new remanufacturing system is considered to be available 120 days after
we first issue a certificate of conformity for it. Where we issue a
certificate of conformity based on carryover data for a system that is
already considered to be available for the configuration, the 120-day
delay does not apply and the new system is considered to be available
when we issue the certificate.
    (c) For the purpose of paragraph (a)(2) of this section, marginal
cost means the difference in costs between remanufacturing the engine
using the remanufacturing system and remanufacturing the engine
conventionally, divided by the projected amount that PM emissions will
be reduced over the engine's useful life.
    (1) Total costs include:
    (i) Incremental hardware costs.
    (ii) Incremental labor costs.
    (iii) Incremental operating costs over one useful life period.
    (iv) Other costs (such as shipping).
    (2) Calculate the projected amount that PM emissions will be
reduced over the engine's useful life using the following equation:

PM tons = (EFbase - EFcont) x (PR) x (UL) x (LF)
x (10-6)

Where:

EFbase = deteriorated baseline PM emission rate (g/kW-hr).
EFcont = deteriorated controlled PM emission rate (g/kW-hr).
PR = maximum engine power for the engine (kW).

[[Page 37274]]

UL = useful life (hr).
LF = the load factor that would apply for your engine under Sec.  1042.705.

Sec.  1042.820   Emission standards and required emission reductions
for remanufactured engines.

    (a) The requirements of this section apply with respect to
emissions as measured according to subpart F of this part. See
paragraph (g) of this section for special provisions related to
remanufacturing systems certified for both locomotive and marine
engines. Remanufactured Tier 2 and earlier engines may be certified
under this subpart only if they have NOX emissions
equivalent to or less than baseline NOX levels and PM
emissions at least 25.0 percent less than baseline PM emission levels.
See Sec.  1042.825 for provisions for determining baseline
NOX and PM emissions. See Sec.  1042.835 for provisions
related to demonstrating compliance with these requirements.
    (b) The NTE and ABT provisions of this part do not apply for
remanufactured engines.
    (c) The exhaust emission standards in this section apply for
engines using the fuel type on which the engines in the engine family
are designed to operate. Engines designed to operate using residual
fuel must comply with the standards and requirements of this part when
operated using residual fuel.
    (d) Your engines must meet the exhaust emission standards of this
section over their full useful life, as defined in Sec.  1042.101(e).
    (e) The duty-cycle emission standards in this subpart apply to all
testing performed according to the procedures in Sec.  1042.505,
including certification, production-line, and in-use testing.
    (f) Sections 1042.120, 1042.125, 1042.130, 1042.140 apply for
remanufactured engines as written. Section 1042.115 applies for
remanufactured engines as written, except for the requirement that
electronically controlled engines broadcast their speed and output
shaft torque.
    (g) A remanufacturing system certified for locomotive engines under
40 CFR part 1033 may be deemed to also meet the requirements of this
section, as specified in Sec.  1042.836.

Sec.  1042.825   Baseline determination.

    (a) For the purpose of this subpart, the term ``baseline
emissions'' means the average measured emission rate specified by this
section. Baseline emissions are specific to a given certificate holder
and a given engine configuration.
    (b) Select a used engine to be the emission-data engine for the
engine family for testing. Using good engineering judgment, select the
engine configuration expected to represent the most common
configuration in the family.
    (c) Remanufacture the engine according to OEM specifications (or
equivalent). The engine is considered ``the baseline engine'' at this
point. If the OEM specifications include a range of adjustment for any
parameter, set the parameter to the midpoint of the range. You may ask
us to allow you to adjust it differently, consistent with good
engineering judgment.
    (d) Test the baseline engine four times according to the test
procedures in subpart F of this part. The baseline emissions are the
average of those four tests.
    (e) We may require you to test a second engine of the same or
different configuration in addition to the engine tested under this
section. If we require you to test the same configuration, average the
results of the testing with previous results, unless we determine that
your previous results are not valid.
    (f) Use good engineering judgment for all aspects of the baseline
determination. We may reject your baseline if we determine that you did
not use good engineering judgment, consistent with the provisions of 40
CFR 1068.5.

Sec.  1042.830   Labeling.

    (a) At the time of remanufacture, 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 useful life.
    (4) Written in English.
    (b) The label must--
    (1) Include the heading ``EMISSION CONTROL INFORMATION''.
    (2) Include your full corporate name and trademark.
    (3) Include EPA's standardized designation for the engine family.
    (4) State the engine's category, displacement (in liters or L/cyl),
maximum engine power (in kW), and power density (in kW/L) as needed to
determine the emission standards for the engine family. You may specify
displacement, maximum engine power, and power density as ranges
consistent with the ranges listed in Sec.  1042.101. See Sec.  1042.140
for descriptions of how to specify per-cylinder displacement, maximum
engine power, and power density.
    (5) State: ``THIS MARINE ENGINE COMPLIES WITH 40 CFR 1042, SUBPART
I, FOR [CALENDAR YEAR OF REMANUFACTURE].''.
    (c) 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 international standards). You may also add other
information to ensure that the engine will be properly maintained and used.
    (d) You may ask us to approve modified labeling requirements in
this section if you show that it is necessary or appropriate. We will
approve your request if your alternate label is consistent with the
intent of the labeling requirements of this section.

Sec.  1042.835  Certification of remanufactured engines.

    (a) General requirements. See Sec. Sec.  1042.201, 1042.210,
1042.220, 1042.225, 1042.250, and 1042.255 for the general requirements
related to obtaining a certificate of conformity. See Sec.  1042.836
for special certification provisions for remanufacturing systems
certified for locomotive engines under 40 CFR 1033.936.
    (b) Applications. See Sec.  1042.840 for a description of what you
must include in your application.
    (c) Engine families. See Sec.  1042.845 for instruction about
dividing your engines into engine families.
    (d) Test data. (1) Measure baseline emissions for the test
configuration as specified in Sec.  1042.825.
    (2) Measure emissions from the test engine for your remanufacturing
system according to the procedures of subpart F of this part.
    (3) We may measure emissions from any of your test engines or other
engines from the engine family, as follows:
    (i) 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.
    (ii) If we measure emissions from 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.

[[Page 37275]]

    (iii) Before we test one of your engines, we may set its adjustable
parameters to any point within the specified adjustable ranges (see
Sec.  1042.115(d)).
    (iv) Before we test one of your engines, we may calibrate it within
normal production tolerances for anything we do not consider an
adjustable parameter.
    (4) 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 or other
characteristics unrelated to emissions. You may also ask to add a
configuration subject to Sec.  1042.225.
    (ii) The emission-data engine from the previous model year remains
the appropriate emission-data engine.
    (iii) 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.
    (5) We may require you to test a second engine of the same or
different configuration in addition to the engine tested under this
section.
    (6) 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.
    (e) Demonstrating compliance. (1) For purposes of certification,
your engine family is considered in compliance with the emission
standards in Sec.  1042.820 if all emission-data engines representing
that family have test results showing compliance with the standards and
percent reductions required by that section. To compare emission levels
from the emission-data engine with the applicable emission standards,
apply an additive deterioration factor of 0.015 g/kW-hr to the measured
emission levels for PM. Alternatively, you may test your engine as
specified in Sec.  1042.245 to develop deterioration factors that
represent the deterioration expected in emissions over your engines'
full useful life.
    (2) Collect emission data using measurements to one more decimal
place than the applicable standard. Apply the deterioration factor to
the official emission result, 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.
    (3) Your applicable NOX standard for each configuration
is the baseline NOX emission rate for that configuration
plus 5.0 percent (to account for test-to-test and engine-to-engine
variability). Your applicable PM standard for each configuration is the
baseline PM emission rate for that configuration multiplied by 0.750
plus the deterioration factor. If you choose to include configurations
in your engine family for which you do not measure baseline emissions,
you must demonstrate through engineering analysis that your
remanufacturing system will reduce PM emissions by at least 25.0
percent for those configurations and not increase NOX emissions.
    (4) Your engine family is deemed not to comply if any emission-data
engine representing that family for certification has test results
showing a deteriorated emission level above an applicable emission
standard for any pollutant.
    (f) Safety Evaluation. You must exercise due diligence in ensuring
that your system will not adversely affect safety or otherwise violate
the prohibition of Sec.  1042.115(e).
    (g) Compatibility Evaluation. If you are not the original
manufacturer of the engine, you must contact the original manufacturer
of the engine to verify that your system is compatible with the engine.
Keep records of your contact with the original manufacturer.

Sec.  1042.836  Marine certification of locomotive remanufacturing systems.

    If you certify a Tier 0, Tier 1, or Tier 2 remanufacturing system
for locomotives under 40 CFR part 92 or part 1033, you may also certify
the system under this part 1042, according to the provisions of this
section.
    (a) Include the following with your application for certification
under 40 CFR part 1033:
    (1) A statement of your intent to use your remanufacturing system
for marine engines. Include a list of marine engine models for which
your system may be used.
    (2) If there are significant differences in how your remanufacture
system will be applied to marine engines relative to locomotives, in an
engineering analysis demonstrating that your system will achieve
emission reductions from marine engines similar to those from locomotives.
    (3) A description of modifications needed for marine applications.
    (4) A demonstration of availability as described in Sec.  1042.815,
except that the total marginal cost threshold does not apply.
    (5) An unconditional statement 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.
    (b) Sections 1042.835 and 1042.840 do not apply for engines
certified under this section.
    (c) Systems certified under 40 CFR part 92 are subject to the
following restrictions:
    (1) Tier 0 locomotives systems may not be used for any Category 1
engines or Tier 1 or later Category 2 engines.
    (2) Where systems certified under 40 CFR part 1033 are also
available for an engine, you may not use a system certified under 40
CFR part 92.

Sec.  1042.840  Application requirements for remanufactured engines.

    This section specifies the information that must be in your
application, unless we ask you to include less information under Sec. 
1042.201(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
type on which your engines are designed to operate (for example, ultra
low-sulfur diesel fuel). List each distinguishable engine configuration
in the engine family. For each engine configuration, list the maximum
engine power and the range of values for maximum engine power resulting
from production tolerances, as described in Sec.  1042.140.
    (b) Explain how the emission control system operates. Describe in
detail all system components for controlling exhaust emissions,
including any auxiliary emission control devices (AECDs) you add to the
engine. Identify the part number of each component you describe.
    (c) Summarize your cost effectiveness analysis used to demonstrate
your system will meet the availability criteria of Sec.  1042.815.
Identify the maximum allowable costs for vessel modifications to meet
the these criteria.
    (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 the duty cycle(s) and the corresponding engine applications.
Also describe any special or alternate test procedures you used.
    (f) Describe how you operated the emission-data engine before
testing, including the duty cycle and the number of engine operating
hours used

[[Page 37276]]

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. See Sec. 
1042.801 if your certification is based on the use of special fuels or
additives.
    (h) Identify the engine family's useful life.
    (i) Include the maintenance and warranty instructions you will give
to the owner/operator (see Sec. Sec.  1042.120 and 1042.125).
    (j) Include the emission-related installation instructions you will
provide if someone else installs your engines in a vessel (see Sec. 
1042.130).
    (k) Describe your emission control information label (see Sec. 
1042.830).
    (l) Identify the engine family's deterioration factors and describe
how you developed them (see Sec.  1042.245). Present any emission test
data you used for this.
    (m) 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.
    (n) Present emission data for HC, NOX, PM, and CO as
required by Sec.  1042.820. Show emission figures before and after
applying adjustment factors for regeneration and deterioration factors
for each pollutant and for each engine.
    (o) Report all test results, including those from invalid 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.
    (p) Describe all adjustable operating parameters (see Sec. 
1042.115(d)), 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) For Category 1 engines, 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.
    (5) For Category 2 engines, propose a range of adjustment for each
adjustable parameter, as described in Sec.  1042.115(d). Include
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 proposed adjustable ranges.
    (q) 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.
    (r) Include the information required by other subparts of this part.
    (s) Include other applicable information, such as information
specified in this part or 40 CFR part 1068 related to requests for
exemptions.
    (t) Name an agent for service located in the United States. Service
on this agent constitutes service on you or any of your officers or
employees for any action by EPA or otherwise by the United States
related to the requirements of this part.
    (u) If you are not the original manufacturer of the engine, include
a summary of your contact with the original manufacturer of the engine
and provide to us any documentation provided to you by the original
manufacturer.

Sec.  1042.845  Remanufactured engine families.

    (a) For purposes of certification, divide your product line into
families of engines that are expected to have similar emission
characteristics throughout the useful life as described in this
section. You may not group Category 1 and Category 2 engines in the
same family.
    (b) In general, group engines in the same engine family if they are
the same in all the following aspects:
    (1) The combustion cycle and fuel (the fuels with which the engine
is intended or designed to be operated).
    (2) The cooling system (for example, raw-water vs. separate-circuit
cooling).
    (3) Method of air aspiration.
    (4) Method of exhaust aftertreatment (for example, catalytic
converter or particulate trap).
    (5) Combustion chamber design.
    (6) Nominal bore and stroke.
    (7) Method of control for engine operation other than governing
(i.e., mechanical or electronic).
    (8) Original engine manufacturer.
    (c) Alternatively, you may ask us to allow you to include other
engine configurations in your engine family, consistent with good
engineering judgment.
    (d) Do not include in your family any configurations for which good
engineering judgment indicates that your emission controls are unlikely
to provide PM emission reductions similar to the configuration(s) tested.

Sec.  1042.850  Exemptions and hardship relief.

    This section describes exemption and hardship provisions that are
available for owner/operators of engine subject to the provisions of
this subpart.
    (a) Vessels owned and operated by entities that meet the size
criterion of this paragraph (a) are exempt from the requirements of
this subpart I. To be exempt, your gross annual revenue for the
calendar year before the remanufacture must be less than $5,000,000 in
2008 dollars or the equivalent value for future years based on the
Bureau of Labor Statistics' Producer Price Index (see www.bls.gov).
Include all revenues from any parent company and its subsidiaries. The
exemption applies only for years in which you meet this criterion.
    (b) In unusual circumstances, we may exempt you from an otherwise
applicable requirement that you apply a certified remanufacturing
system when remanufacturing your marine engine.
    (1) To be eligible, you must demonstrate that all of the following
are true:
    (i) Unusual circumstances prevent you from meeting requirements
from this chapter.
    (ii) You have taken all reasonable steps to minimize the extent of
the nonconformity.
    (iii) Not having the exemption will jeopardize the solvency of your
company.
    (iv) No other allowances are available under the regulations in
this chapter to avoid the impending violation.
    (2) Send the Designated Compliance Officer a written request for an
exemption before you are in violation.
    (3) We may impose other conditions, including provisions to use an
engine meeting less stringent emission standards or to recover the lost
environmental benefit.
    (4) In determining whether to grant the exemptions, we will
consider all relevant factors, including the following:
    (i) The number of engines to be exempted.
    (ii) The size of your company and your ability to endure the hardship.
    (iii) The length of time a vessel is expected to remain in service.
    (c) If you believe that a remanufacturing system that we identified
as being available cannot be

[[Page 37277]]

installed without significant modification of your vessel, you may ask
us to determine that a remanufacturing system is not considered
available for your vessel because the cost would be excessive.

Subpart J--Definitions and Other Reference Information

Sec.  1042.901  Definitions.

    The following definitions apply to this part. The definitions apply
to all subparts unless we note otherwise. All undefined terms have the
meaning the Clean Air Act gives to them. The definitions follow:
    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 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.
    Annex VI Technical Code means the ``Technical Code on Control of
Emission of Nitrogen Oxides from Marine Diesel Engines, 1997,'' adopted
by the International Maritime Organization (incorporated by reference
in Sec.  1042.910).
    Applicable emission standard or applicable standard means an
emission standard to which an engine is subject; or, where an engine
has been or is being certified to another standard or FEL, applicable
emission standards means the FEL and other standards to which the
engine has been or is being certified. This definition does not apply
to subpart H of this part.
    Auxiliary emission control device means any element of design that
senses temperature, vessel 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.
    Base engine means a land-based engine to be marinized, as
configured prior to marinization.
    Baseline emissions has the meaning given in Sec.  1042.825.
    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.
    Carryover means the process of obtaining a certificate for one
model year using the same test data from the preceding model year, as
described in Sec.  1042.235(d). This generally requires that the
locomotives in the engine family do not differ in any aspect related to
emissions.
    Category 1 means relating to a marine engine with specific engine
displacement below 7.0 liters per cylinder.
    Category 2 means relating to a marine engine with a specific engine
displacement at or above 7.0 liters per cylinder but less than 30.0
liters per cylinder.
    Category 3 means relating to a marine engine with a specific engine
displacement at or above 30.0 liters per cylinder.
    Certification means relating to the process of obtaining a
certificate of conformity for an engine family that complies with the
emission standards and requirements in this part.
    Certified emission level means the highest deteriorated emission
level in an engine family for a given pollutant from either transient
or steady-state testing.
    Clean Air Act means the Clean Air Act, as amended, 42 U.S.C. 7401-7671q.
    Commercial means relating to an engine or vessel that is not a
recreational marine engine or a recreational vessel.
    Compression-ignition means relating to a type of reciprocating,
internal-combustion engine that is not a spark-ignition engine. Note
that marine engines powered by natural gas with maximum engine power at
or above 250 kW are deemed to be compression-ignition engines in Sec. 
1042.1.
    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 has the meaning given in 40 CFR 1065.1001.
    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.
    Days means calendar days, unless otherwise specified. For example,
where we specify working days, we mean calendar days excluding weekends
and U.S. national holidays.
    Designated Compliance Officer means the Manager, Heavy-Duty and
Nonroad Engine Group (6403-J), 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 (or
between highest and lowest emission levels, if applicable), 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.
    Diesel fuel has the meaning given in 40 CFR 80.2. This generally
includes No. 1 and No. 2 petroleum diesel fuels and biodiesel fuels.
    Discrete-mode means relating to the discrete-mode type of steady-
state test described in Sec.  1042.505.
    Emission control system means any device, system, or element of
design that controls or reduces the emissions of regulated pollutants
from an engine.
    Emission-data engine means an engine that is tested for
certification. This includes engines tested to establish deterioration
factors.

[[Page 37278]]

    Emission-related maintenance means maintenance that substantially
affects emissions or is likely to substantially affect emission
deterioration.
    Engine has the meaning given in 40 CFR 1068.30. This includes
complete and partially complete engines.
    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.  1042.230.
    Engine manufacturer means a manufacturer of an engine. See the
definition of ``manufacturer'' in this section.
    Engineering analysis means a summary of scientific and/or
engineering principles and facts that support a conclusion made by a
manufacturer, with respect to compliance with the provisions of this part.
    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.  1042.5, is not
subject to this part 1042.
    Exempted has the meaning given 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.
    Family emission limit (FEL) means an emission level declared by the
manufacturer to serve in place of an otherwise applicable emission
standard under the ABT program in subpart H of this part. The family
emission limit must be expressed to the same number of decimal places
as the emission standard it replaces. The family emission limit serves
as the emission standard for the engine family with respect to all
required testing.
    Freshly manufactured marine engine means a new marine engine that
has not been remanufactured. An engine becomes freshly manufactured
when it is originally manufactured.
    Foreign vessel means a vessel of foreign registry or a vessel
operated under the authority of a country other than the United States.
    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,
diesel fuel, residual fuel, or natural gas. There can be multiple
grades within a single fuel type, such as high-sulfur or low-sulfur
diesel fuel.
    Good engineering judgment has the meaning given in 40 CFR 1068.30.
See 40 CFR 1068.5 for the administrative process we use to evaluate
good engineering judgment.
    Green Engine Factor means a factor that is applied to emission
measurements from a Category 2 engine that has had little or no service
accumulation. The Green Engine Factor adjusts emission measurements to
be equivalent to emission measurements from an engine that has had
approximately 300 hours of use.
    High-sulfur diesel fuel means one of the following:
    (1) For in-use fuels, high-sulfur diesel fuel means a diesel fuel
with a maximum sulfur concentration above 500 parts per million.
    (2) For testing, high-sulfur diesel fuel has the meaning given in
40 CFR part 1065.
    Hydrocarbon (HC) means the hydrocarbon group on which the emission
standards are based for each fuel type, as described in Sec.  1042.101(d).
    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.
    Low-hour means relating to an engine that has stabilized emissions
and represents the undeteriorated emission level. This would generally
involve less than 125 hours of operation for engines below 560 kW and
less than 300 hours for engines at or above 560 kW.
    Low-sulfur diesel fuel means one of the following:
    (1) For in-use fuels, low-sulfur diesel fuel means a diesel fuel
market as low-sulfur diesel fuel having a maximum sulfur concentration
of 500 parts per million.
    (2) For testing, low-sulfur diesel fuel has the meaning given in 40
CFR part 1065.
    Manufacture means the physical and engineering process of
designing, constructing, and assembling an engine or a vessel.
    Manufacturer has the meaning given in section 216(1) of the Clean
Air Act (42 U.S.C. 7550(1)). In general, this term includes any person
who manufactures an engine or vessel for sale in the United States or
otherwise introduces a new marine engine into U.S. commerce. This
includes importers who import engines or vessels for resale. It also
includes post-manufacture marinizers, but not dealers. All
manufacturing entities under the control of the same person are
considered to be a single manufacturer.
    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. A fueling system is considered integral to
the vessel only if one or more essential elements are permanently
affixed to 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 has the meaning given in Sec.  1042.140.
    Maximum test power means the power output observed at the maximum
test speed with the maximum fueling rate possible.
    Maximum test speed has the meaning given in 40 CFR 1065.1001.
    Maximum test torque has the meaning given in 40 CFR 1065.1001.
    Model year means one of the following things:
    (1) For freshly manufactured marine engines (see definition of
``new marine 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 marine engine after
originally being placed into service as a motor-vehicle

[[Page 37279]]

engine, a nonroad engine that is not a marine engine, or a stationary
engine, model year means the calendar year in which the engine was
converted (see definition of ``new marine engine,'' paragraph (2)).
    (3) For a marine engine excluded under Sec.  1042.5 that is later
converted to operate in an application that is not excluded, model year
means the calendar year in which the engine was converted (see
definition of ``new marine engine, (paragraph (3)).
    (4) For engines that are not freshly manufactured but are installed
in new vessels, model year means the calendar year in which the engine
is installed in the new vessel (see definition of ``new marine
engine,'' paragraph (4)).
    (5) For imported engines:
    (i) For imported engines described in paragraph (5)(i) of the
definition of ``new marine engine,'' model year has the meaning given
in paragraphs (1) through (4) of this definition.
    (ii) For imported engines described in paragraph (5)(ii) of the
definition of new marine engine,'' model year means the calendar year
in which the engine is modified.
    (iii) For imported engines described in paragraph (5)(iii) of the
definition of ``new marine engine,'' model year means the calendar year
in which the importation occurs.
    (6) For freshly manufactured vessels, model year means the calendar
year in which the keel is laid or the vessel is at a similar stage of
construction. For vessels that become new as a result of substantial
modifications, model year means the calendar year in which the
modifications physically begin.
    (7) For remanufactured engines, model year means the calendar year
in which the remanufacture takes place.
    Motor vehicle has the meaning given in 40 CFR 85.1703(a).
    New marine engine means any of the following things:
    (1) A freshly manufactured marine 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 is new from the time it is produced
until the ultimate purchaser receives the title or the product is
placed into service, whichever comes first.
    (2) An engine intended to be installed in a vessel that was
originally manufactured as a motor-vehicle engine, a nonroad engine
that is not a marine engine, or a stationary engine. In this case, the
engine is no longer a motor-vehicle, nonmarine, or stationary engine
and becomes a ``new marine engine.'' The engine is no longer new when
it is placed into marine service.
    (3) A marine engine that has been previously placed into service in
an application we exclude under Sec.  1042.5, where that engine is
installed in a vessel that is covered by this part 1042. The engine is
no longer new when it is placed into marine service covered by this
part 1042. For example, this would apply to an engine that is no longer
used in a foreign vessel.
    (4) An engine not covered by paragraphs (1) through (3) of this
definition that is intended to be installed in a new vessel. The engine
is no longer new when the ultimate purchaser receives a title for the
vessel or it is placed into service, whichever comes first. This
generally includes installation of used engines in new vessels.
    (5) A remanufactured marine engine. An engine becomes new when it
is remanufactured (as defined in this section) and ceases to be new
when placed back into service.
    (6) An imported marine engine, subject to the following provisions:
    (i) An imported marine 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 remanufactured engine that would have been
required to be certified if it had been remanufactured in the United
States.
    (iii) An imported engine that will be 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), is a new marine engine
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.
    (iv) An imported marine 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 the dates shown in the
following table. This addresses uncertified engines and vessels
initially placed into service that someone seeks to import into the
United States. Importation of this kind of engine (or vessel containing
such an engine) is generally prohibited by 40 CFR part 1068.

                   Applicability of Emission Standards for Compression-Ignition Marine Engines
----------------------------------------------------------------------------------------------------------------
                                                                                                   Initial model
                                                                       Per-cylinder displacement      year of
        Engine category and type                  Power (kW)                    (L/cyl)              emission
                                                                                                     standards
----------------------------------------------------------------------------------------------------------------
Category 1..............................  P < 19....................  All.......................            2000
Category 1..............................  19 <= P < 37..............  All.......................            1999
Category 1, Recreational................  P >= 37...................  disp. < 0.9...............            2007
Category 1, Recreational................  All.......................  0.9 <= disp. < 2.5........            2006
Category 1, Recreational................  All.......................  disp. >= 2.5..............            2004
Category 1, Commercial..................  P >= 37...................  disp. < 0.9...............            2005
Category 1, Commercial..................  All.......................  disp. [gteqt] 0.9.........            2004
Category 2 and 3........................  All.......................  disp. >= 5.0..............            2004
----------------------------------------------------------------------------------------------------------------

    New vessel means any of the following:
    (1) A vessel for which the ultimate purchaser has never received
the equitable or legal title. The vessel is no longer new when the
ultimate purchaser receives this title or it is placed into service,
whichever comes first.
    (2) For vessels with no Category 3 engines, a vessel that has been
modified such that the value of the modifications exceeds 50 percent of
the value of the modified vessel, excluding temporary modifications (as
defined in this section). The value of the modification is the
difference in the assessed value of the vessel before the modification
and the assessed value of the vessel after the modification. The vessel
is no longer new when it is placed into service. Use

[[Page 37280]]

the following equation to determine if the fractional value of the
modification exceeds 50 percent:

Percent of value = [(Value after modification)-(Value before
modification)] x 100% / (Value after modification)

    (3) For vessels with Category 3 engines, a vessel that has
undergone a modification that substantially alters the dimensions or
carrying capacity of the vessel, changes the type of vessel, or
substantially prolongs the vessel's life.
    (4) An imported vessel that has already been placed into service,
where it has an engine not covered by a certificate of conformity
issued under this part at the time of importation that was manufactured
after the requirements of this part start to apply (see Sec.  1042.1).
    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 has the meaning given in 40 CFR 1065.1001.
This generally means the difference between the emitted mass of total
hydrocarbons and the emitted mass of methane.
    Nonroad means relating to nonroad engines, or vessels, or equipment
that include nonroad engines.
    Nonroad engine has the meaning given 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.
    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.
    Operator demand has the meaning given in 40 CFR 1065.1001.
    Owners manual means a document or collection of documents prepared
by the engine manufacturer for the owner or operator to describe
appropriate engine maintenance, applicable warranties, and any other
information related to operating or keeping the engine. The owners
manual is typically provided to the ultimate purchaser at the time of
sale. The owners manual may be in paper or electronic format.
    Oxides of nitrogen has the meaning given in 40 CFR 1065.1001.
    Particulate trap means a filtering device that is designed to
physically trap particulate matter above a certain size.
    Passenger means a person that provides payment as a condition of
boarding a vessel. This does not include the owner or any paid crew members.
    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 a vessel dealership or
manufacturing facility, 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.
    Post-manufacture marinizer means an entity that produces a marine
engine by modifying a non-marine engine, whether certified or
uncertified, complete or partially complete, where the entity is not
controlled by the manufacturer of the base engine or by an entity that
also controls the manufacturer of the base engine. In addition, vessel
manufacturers that substantially modify marine engines are post-
manufacture marinizers. For the purpose of this definition,
``substantially modify'' means changing an engine in a way that could
change engine emission characteristics.
    Power density has the meaning given in Sec.  1042.140.
    Ramped-modal means relating to the ramped-modal type of steady-
state test described in Sec.  1042.505.
    Rated speed means the maximum full-load governed speed for governed
engines and the speed of maximum power for ungoverned engines.
    Recreational marine engine means a Category 1 propulsion marine
engine that is intended by the manufacturer to be installed on a
recreational vessel.
    Recreational vessel means a vessel that is intended by the vessel
manufacturer to be operated primarily for pleasure or leased, rented or
chartered to another for the latter's pleasure. However, this does not
include the following vessels:
    (1) Vessels below 100 gross tons that carry more than 6 passengers.
    (2) Vessels at or above 100 gross tons that carry one or more
passengers.
    (3) Vessels used solely for competition (see Sec.  1042.620).
    Remanufacture means to replace every cylinder liner in a commercial
engine with maximum engine power at or above 600 kW, whether during a
single maintenance event or cumulatively within a five-year period. For
the purpose of this definition, ``replace'' includes removing,
inspecting, and requalifying a liner. Rebuilding a recreational engine
or an engine with maximum engine power below 600 kW is not
remanufacturing.
    Remanufacture system or remanufacturing system means all components
(or specifications for components) and instructions necessary to
remanufacture an engine in accordance with applicable requirements of
this part 1042.
    Remanufacturer has the meaning given to ``manufacturer'' in section
216(1) of the Clean Air Act (42 U.S.C. 7550(1)) with respect to
remanufactured marine engines. This term includes any person that is
engaged in the manufacture or assembly of remanufactured engines, such
as persons who:
    (1) Design or produce the emission-related parts used in remanufacturing.
    (2) Install parts in or on an existing engine to remanufacture it.
    (3) Own or operate the engine and provide specifications as to how
an engine is to be remanufactured (i.e., specifying who will perform
the work, when the work is to be performed, what parts are to be used,
or how to calibrate the adjustable parameters of the engine).
    Residual fuel has the meaning given in 40 CFR 80.2. This generally
includes all RM grades of marine fuel without regard to whether they
are known commercially as residual fuel. For example, fuel marketed as
intermediate fuel may be residual fuel.
    Revoke has the meaning given in 40 CFR 1068.30. In general this
means to terminate the certificate or an exemption for an engine family.
    Round has the meaning given in 40 CFR 1065.1001.
    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.
    Small volume boat builder means a boat manufacturer with fewer than
500 employees and with annual worldwide production of fewer than 100
boats. For manufacturers owned by a parent company, these limits apply
to the combined production and number of employees of the parent
company and all its subsidiaries.
    Small-volume engine manufacturer means a manufacturer with annual
worldwide production of fewer than 1,000 internal combustion engines
(marine and nonmarine). For manufacturers owned by a parent company,
the limit applies to the

[[Page 37281]]

production of the parent company and all its subsidiaries.
    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.
    Specified adjustable range means a range of adjustment for an
adjustable parameter that is approved as part of certification. Note
that Category 1 engines must comply with emission standards over the
full physically adjustable range for any adjustable parameters.
    Steady-state has the meaning given in 40 CFR 1065.1001.
    Sulfur-sensitive technology means an emission control technology
that experiences a significant drop in emission control performance or
emission-system durability when an engine is operated on low-sulfur
fuel (i.e., fuel with a sulfur concentration of 300 to 500 ppm) as
compared to when it is operated on ultra low-sulfur fuel (i.e., fuel
with a sulfur concentration less than 15 ppm). Exhaust-gas
recirculation is not a sulfur-sensitive technology.
    Suspend has the meaning given in 40 CFR 1068.30. In general this
means to temporarily discontinue the certificate or an exemption for an
engine family.
    Temporary modification means a modification to a vessel based on a
written contract for marine services such that the modifications will
be removed from the vessel when the contract expires. This provision is
intended to address short-term contracts that would generally be less
than 12 months in duration. You may ask us to consider modifications
that will be in place longer than 12 months as temporary modifications.
    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 Tier 1 emission standards, as shown in
Appendix I.
    Tier 2 means relating to the Tier 2 emission standards, as shown in
Appendix I.
    Tier 3 means relating to the Tier 3 emission standards, as shown in
Sec.  1042.101.
    Tier 4 means relating to the Tier 4 emission standards, as shown in
Sec.  1042.101.
    Total hydrocarbon has the meaning given in 40 CFR 1065.1001. This
generally means the combined mass of organic compounds measured by the
specified procedure for measuring total hydrocarbon, expressed as a
hydrocarbon with an atomic hydrogen-to-carbon ratio of 1.85:1.
    Total hydrocarbon equivalent has the meaning given in 40 CFR
1065.1001. This generally 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
locomotives. The hydrogen-to-carbon ratio of the equivalent hydrocarbon
is 1.85:1.
    Ultimate purchaser means, with respect to any new vessel or new
marine engine, the first person who in good faith purchases such new
vessel or new marine engine for purposes other than resale.
    Ultra low-sulfur diesel fuel means one of the following:
    (1) For in-use fuels, ultra low-sulfur diesel fuel means a diesel
fuel marketed as ultra low-sulfur diesel fuel having a maximum sulfur
concentration of 15 parts per million.
    (2) For testing, ultra low-sulfur diesel fuel has the meaning given
in 40 CFR part 1065.
    United States has the meaning given 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 engine is required to comply with all applicable emission
standards. See Sec.  1042.101(e).
    Variable-speed engine means an engine that is not a constant-speed
engine.
    Vessel means a marine vessel.
    Vessel operator means any individual that physically operates or
maintains a vessel or exercises managerial control over the operation
of the vessel.
    Vessel owner means the individual or company that holds legal title
to a vessel.
    Void has the meaning given in 40 CFR 1068.30. In general this means
to invalidate a certificate or an exemption both retroactively and
prospectively.
    Volatile liquid fuel means any fuel other than diesel fuel or
biodiesel that is a liquid at atmospheric pressure and has a Reid Vapor
Pressure higher than 2.0 pounds per square inch.
    We (us, our) means the Administrator of the Environmental
Protection Agency and any authorized representatives.

Sec.  1042.905  Symbols, acronyms, and abbreviations.

    The following symbols, acronyms, and abbreviations apply to this part:

ABT Averaging, banking, and trading.
AECD auxiliary-emission control device.
CFR Code of Federal Regulations.
CO carbon monoxide.
CO2 carbon dioxide.
cyl cylinder.
disp. displacement.
EPA Environmental Protection Agency.
FEL Family Emission Limit.
g grams.
HC hydrocarbon.
hr hours.
kPa kilopascals.
kW kilowatts.
L liters.
LTR Limited Testing Region.
NARA National Archives and Records Administration.
NMHC nonmethane hydrocarbons.
NOX oxides of nitrogen (NO and NO2).
NTE not-to-exceed.
PM particulate matter.
RPM revolutions per minute.
SAE Society of Automotive Engineers.
SCR selective catalytic reduction.
THC total hydrocarbon.
THCE total hydrocarbon equivalent.
ULSD ultra low-sulfur diesel fuel.
U.S.C. United States Code.

Sec.  1042.910  Reference materials.

    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 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.

[[Page 37282]]

    (a) SAE material. Table 1 to this section lists material from the
Society of Automotive Engineers 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 or www.sae.org.
Exit Disclaimer Table 1 follows:

                Table 1 to Sec.  1042.910.--SAE Materials
------------------------------------------------------------------------
                                                             Part 1042
                 Document  No. and name                      reference
------------------------------------------------------------------------
SAE J1930, Electrical/Electronic Systems Diagnostic             1042.135
 Terms, Definitions, Abbreviations, and Acronyms,
 revised May 1998.......................................
------------------------------------------------------------------------

    (b) IMO material. Table 2 to this section lists material from the
International Maritime Organization that we have incorporated by
reference. The first column lists the number and name of the material.
The second column lists the section of this part where we reference it.
Anyone may purchase copies of these materials from the International
Maritime Organization, 4 Albert Embankment, London SE1 7SR, United
Kingdom or www.imo.org. Exit Disclaimer Table 2 follows:

                Table 2 to Sec.  1042.910.--IMO Materials
------------------------------------------------------------------------
                                                             Part 1042
                  Document No. and name                      reference
------------------------------------------------------------------------
Resolutions of the 1997 MARPOL Conference: Resolution 2--       1042.901
 Technical Code on Control of Emission of Nitrogen
 Oxides from Marine Diesel Engines, 1997................
------------------------------------------------------------------------

Sec.  1042.915  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.

Sec.  1042.920  Hearings.

    (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.


Sec.  1042.925  Reporting and recordkeeping requirements.

    Under the Paperwork Reduction Act (44 U.S.C. 3501 et seq.), the
Office of Management and Budget approves the reporting and
recordkeeping specified in the applicable regulations. The following
items illustrate the kind of reporting and recordkeeping we require for
engines regulated under this part:
    (a) We specify the following requirements related to engine
certification in this part 1042:
    (1) In Sec. 1042.135 we require engine manufacturers to keep
certain records related to duplicate labels sent to vessel manufacturers.
    (2) In Sec. 1042.145 we state the requirements for interim provisions.
    (3) In subpart C of this part we identify a wide range of
information required to certify engines.
    (4) In Sec. Sec. 1042.345 and 1042.350 we specify certain records
related to production-line testing.
    (5) In subpart G of this part we identify several reporting and
recordkeeping items for making demonstrations and getting approval
related to various special compliance provisions.
    (6) In Sec. Sec. 1042.725, 1042.730, and 1042.735 we specify
certain records related to averaging, banking, and trading.
    (7) In subpart I of this part we specify certain records related to
meeting requirements for remanufactured engines.
    (b) We specify the following requirements related to testing in 40
CFR part 1065:
    (1) In 40 CFR 1065.2 we give an overview of principles for
reporting information.
    (2) In 40 CFR 1065.10 and 1065.12 we specify information needs for
establishing various changes to published test procedures.
    (3) In 40 CFR 1065.25 we establish basic guidelines for storing
test information.
    (4) In 40 CFR 1065.695 we identify data that may be appropriate for
collecting during testing of in-use engines using portable analyzers.
    (c) We specify the following requirements related to the general
compliance provisions in 40 CFR part 1068:
    (1) In 40 CFR 1068.5 we establish a process for evaluating good
engineering judgment related to testing and certification.
    (2) In 40 CFR 1068.25 we describe general provisions related to
sending and keeping information.
    (3) In 40 CFR 1068.27 we require manufacturers to make engines
available for our testing or inspection if we make such a request.
    (4) In 40 CFR 1068.105 we require vessel manufacturers to keep
certain records related to duplicate labels from engine manufacturers.
    (5) In 40 CFR 1068.120 we specify recordkeeping related to
rebuilding engines.
    (6) In 40 CFR part 1068, subpart C, we identify several reporting
and recordkeeping items for making demonstrations and getting approval
related to various exemptions.
    (7) In 40 CFR part 1068, subpart D, we identify several reporting
and recordkeeping items for making demonstrations and getting approval
related to importing engines.
    (8) In 40 CFR 1068.450 and 1068.455 we specify certain records
related to testing production-line engines in a selective enforcement
audit.
    (9) In 40 CFR 1068.501 we specify certain records related to
investigating and reporting emission-related defects.
    (10) In 40 CFR 1068.525 and 1068.530 we specify certain records
related to recalling nonconforming engines.

Appendix I to Part 1042.--Summary of Previous Emission Standards

    The following standards apply to compression-ignition marine
engines produced before the model years specified in Sec.  1042.1:
    (a) Engines below 37 kW. Tier 1 and Tier 2 standards for engines
below 37 kW apply as specified in 40 CFR part 89 and summarized in
the following table:

[[Page 37283]]

                  Table 1 to Appendix I.--Emission Standards for Engines Below 37 kW (g/kW-hr)
----------------------------------------------------------------------------------------------------------------
       Rated power (kW)               Tier          Model year      NMHC + NOX          CO              PM
----------------------------------------------------------------------------------------------------------------
kW<8..........................  Tier 1..........            2000            10.5             8.0            1.0
                                Tier 2..........            2005             7.5             8.0            0.80
8<=kW<19......................  Tier 1..........            2000             9.5             6.6            0.80
                                Tier 2..........            2005             7.5             6.6            0.80
19<=kW<37.....................  Tier 1..........            1999             9.5             5.5            0.8
                                Tier 2..........            2004             7.5             5.5            0.6
----------------------------------------------------------------------------------------------------------------

    (b) Engines at or above 37 kW. Tier 1 and Tier 2 standards for
engines at or above 37 kW apply as specified in 40 CFR part 94 and
summarized as follows:
    (1) Tier 1 standards. NOX emissions from model year
2004 and later engines with displacement of 2.5 or more liters per
cylinder may not exceed the following values:
    (i) 17.0 g/kW-hr when maximum test speed is less than 130 rpm.
    (ii) 45.0 x N-0.20 when maximum test speed is at or
above 130 but below 2000 rpm, where N is the maximum test speed of
the engine in revolutions per minute. Round the calculated standard
to the nearest 0.1 g/kW-hr.
    (ii) 9.8 g/kW-hr when maximum test speed is 2000 rpm or more.
    (2) Tier 2 primary standards. Exhaust emissions may not exceed
the values shown in the following table:

          Table 2 to Appendix I.--Primary Tier 2 Emission Standards for Commercial and Recreational Marine Engines at or Above 37 kW (g/kW-hr)
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                                                    NOX + THC
       Engine size  liters/cylinder            Maximum engine power                Category           Model  year    g/kW-hr    CO  g/kW-hr  PM  g/kW-hr
--------------------------------------------------------------------------------------------------------------------------------------------------------
disp. < 0.9..............................  power [gteqt] 37 kW.........  Category 1 Commercial......         2005          7.5          5.0         0.40
                                                                         Category 1 Recreational....         2007          7.5          5.0         0.40
0.9 <= disp. < 1.2.......................  All.........................  Category 1 Commercial......         2004          7.2          5.0         0.30
                                                                         Category 1 Recreational....         2006          7.2          5.0         0.30
1.2 <= disp. < 2.5.......................  All.........................  Category 1 Commercial......         2004          7.2          5.0         0.20
                                                                         Category 1 Recreational....         2006          7.2          5.0         0.20
2.5 <= disp. < 5.0.......................  All.........................  Category 1 Commercial......         2007          7.2          5.0         0.20
                                                                         Category 1 Recreational....         2009          7.2          5.0         0.20
5.0 <= disp. < 15.0......................  All.........................  Category 2.................         2007          7.8          5.0         0.27
15.0 <= disp. < 20.0.....................  power < 3300 kW.............  Category 2.................         2007          8.7          5.0         0.50
                                           power [gteqt] 3300 kW.......  Category 2.................         2007          9.8          5.0         0.50
20.0 <= disp. < 25.0.....................  All.........................  Category 2.................         2007          9.8          5.0         0.50
25.0 <= disp. < 30.0.....................  All.........................  Category 2.................         2007           11          5.0          0.5
--------------------------------------------------------------------------------------------------------------------------------------------------------

    (3) Tier 2 supplemental standards. Not-to-exceed emission
standards apply for Tier 2 engines as specified in 40 CFR 94.8(e).

Appendix II to Part 1042--Steady-State Duty Cycles

    (a) The following duty cycles apply as specified in Sec. 
1042.505(b)(1):
    (1) The following duty cycle applies for discrete-mode testing:

------------------------------------------------------------------------
                                            Percent of
    E3 mode No.       Engine speed \1\     maximum test      Weighting
                                               power          factors
------------------------------------------------------------------------
1.................  Maximum test speed..             100            0.2
2.................  91%.................              75            0.5
3.................  80%.................              50            0.15
4.................  63%.................              25            0.15
------------------------------------------------------------------------
\1\ Speed terms are defined in 40 CFR part 1065. Percent speed values
  are relative to maximum test speed.

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

----------------------------------------------------------------------------------------------------------------
                                           Time in mode
                RMC mode                     (seconds)         Engine speed 1, 3         Power (percent) 2, 3
----------------------------------------------------------------------------------------------------------------
1a Steady-state.........................             229  Maximum test speed........  100%.
1b Transition...........................              20  Linear transition.........  Linear transition in
                                                                                       torque.
2a Steady-state.........................             166  63%.......................  25%.
2b Transition...........................              20  Linear transition.........  Linear transition in
                                                                                       torque.
3a Steady-state.........................             570  91%.......................  75%.
3b Transition...........................              20  Linear transition.........  Linear transition in
                                                                                       torque.
4a Steady-state.........................             175  80%.......................  50%.
----------------------------------------------------------------------------------------------------------------
\1\ Speed terms are defined in 40 CFR part 1065. Percent speed is relative to maximum test speed.
\2\ The percent power is relative to the maximum test power.

[[Page 37284]]

3 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, and
  simultaneously command a similar linear progression for engine speed if there is a change in speed setting.

    (b) The following duty cycles apply as specified in Sec.  1042.505(b)(2):
    (1) The following duty cycle applies for discrete-mode testing:

------------------------------------------------------------------------
                                            Percent of
    E5 mode No.       Engine speed \1\     maximum test      Weighting
                                               power          factors
------------------------------------------------------------------------
1.................  Maximum test speed..             100            0.08
2.................  91%.................              75            0.13
3.................  80%.................              50            0.17
4.................  63%.................              25            0.32
5.................  Warm idle...........               0            0.3
------------------------------------------------------------------------
\1\ Speed terms are defined in 40 CFR part 1065. Percent speed values
  are relative to maximum test speed.

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

----------------------------------------------------------------------------------------------------------------
                                           Time in mode
                RMC mode                     (seconds)         Engine speed 1, 3         Power (percent) 2, 3
----------------------------------------------------------------------------------------------------------------
1a Steady-state.........................             167  Warm idle.................  0.
1b Transition...........................              20  Linear transition.........  Linear transition in
                                                                                       torque.
2a Steady-state.........................              85  Maximum test speed........  100%.
2b Transition...........................              20  Linear transition.........  Linear transition in
                                                                                       torque.
3a Steady-state.........................             354  63%.......................  25%.
3b Transition...........................              20  Linear transition.........  Linear transition in
                                                                                       torque.
4a Steady-state.........................             141  91%.......................  75%.
4b Transition...........................              20  Linear transition.........  Linear transition in
                                                                                       torque.
5a Steady-state.........................             182  80%.......................  50%.
5b Transition...........................              20  Linear transition.........  Linear transition in
                                                                                       torque.
6 Steady-state..........................             171  Warm idle.................  0.
----------------------------------------------------------------------------------------------------------------
\1\ Speed terms are defined in 40 CFR part 1065. Percent speed is relative to maximum test speed.
\2\ The percent power is relative to the maximum test power.
3 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, and
  simultaneously command a similar linear progression for engine speed if there is a change in speed setting.

    (c) The following duty cycles apply as specified in Sec. 
1042.505(b)(3):
    (1) The following duty cycle applies for discrete-mode testing:

------------------------------------------------------------------------
                                              Torque         Weighting
    E2 mode No.       Engine speed \1\     (percent) \2\      factors
------------------------------------------------------------------------
1.................  Engine Governed.....             100            0.2
2.................  Engine Governed.....              75            0.5
3.................  Engine Governed.....              50            0.15
4.................  Engine Governed.....              25            0.15
------------------------------------------------------------------------
\1\ Speed terms are defined in 40 CFR part 1065.
\2\ The percent torque is relative to the maximum test torque as defined
  in 40 CFR part 1065.

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

----------------------------------------------------------------------------------------------------------------
                                           Time in mode
                RMC mode                     (seconds)           Engine speed            Torque (percent) 1, 2
----------------------------------------------------------------------------------------------------------------
1a Steady-state.........................             234  Engine Governed...........  100%.
1b Transition...........................              20  Engine Governed...........  Linear transition.
2a Steady-state.........................             571  Engine Governed...........  25%.
2b Transition...........................              20  Engine Governed...........  Linear transition.
3a Steady-state.........................             165  Engine Governed...........  75%.
3b Transition...........................              20  Engine Governed...........  Linear transition.
4a Steady-state.........................             170  Engine Governed...........  50%.
----------------------------------------------------------------------------------------------------------------
\1\ The percent torque is relative to the maximum test torque as 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.

[[Page 37285]]

Appendix III to Part 1042--Not-to-Exceed Zones

    (a) The following definitions apply for this Appendix III:
    (1) Percent power means the percentage of the maximum power
achieved at Maximum Test Speed (or at Maximum Test Torque for
constant-speed engines).
    (2) Percent speed means the percentage of Maximum Test Speed.
    (b) Figure 1 of this Appendix illustrates the default NTE zone
for commercial marine engines certified using the duty cycle
specified in Sec.  1042.505(b)(1), except for variable-speed
propulsion marine engines used with controllable-pitch propellers or
with electrically coupled propellers, as follows:
    (1) Subzone 1 is defined by the following boundaries:
    (i) Percent power >= 0.7 [middot] (percent speed)2.5.
    (ii) Percent power <= (percent speed/0.9)3.5.
    (iii) Percent power >= 3.0 [middot] (100%--percent speed).
    (2) Subzone 2 is defined by the following boundaries:
    (i) Percent power >= 0.7 [middot] (percent speed)2.5.
    (ii) Percent power <= (percent speed/0.9)3.5.
    (iii) Percent power < 3.0 [middot] (100% - percent speed).
    (iv) Percent speed >= 70 percent.
BILLING CODE 1505-01-D
[GRAPHIC] [TIFF OMITTED] TR06MY08.013

    (c) Figure 2 of this Appendix illustrates the default NTE zone
for recreational marine engines certified using the duty cycle
specified in Sec.  1042.505(b)(2), except for variable-speed marine
engines used with controllable-pitch propellers or with electrically
coupled propellers, as follows:
    (1) Subzone 1 is defined by the following boundaries:
    (i) Percent power >= 0.7 [middot] (percent speed)2.5.
    (ii) Percent power <= (percent speed/0.9)3.5.
    (iii) Percent power >= 3.0 [middot] (100%-percent speed).
    (iv) Percent power <= 95 percent.
    (2) Subzone 2 is defined by the following boundaries:
    (i) Percent power >= 0.7 [middot] (percent speed)2.5.
    (ii) Percent power <= (percent speed/0.9)3.5.
    (iii) Percent power < 3.0 [middot] (100%-percent speed).
    (iv) Percent speed >= 70 percent.
    (3) Subzone 3 is defined by the following boundaries:
    (i) Percent power <= (percent speed/0.9)3.5.
    (ii) Percent power > 95 percent.

[[Page 37286]]
[GRAPHIC] [TIFF OMITTED] TR06MY08.014

    (d) Figure 3 of this Appendix illustrates the default NTE zone
for variable-speed marine engines used with controllable-pitch
propellers or with electrically coupled propellers that are
certified using the duty cycle specified in Sec.  1042.505(b)(1),
(2), or (3), as follows:
    (1) Subzone 1 is defined by the following boundaries:
    (i) Percent power >= 0.7 [middot] (percent speed)2.5.
    (ii) Percent power >= 3.0 [middot] (100%-percent speed).
    (iii) Percent speed >= 78.9 percent.
    (2) Subzone 2a is defined by the following boundaries:
    (i) Percent power >= 0.7 [middot] (percent speed)2.5.
    (ii) Percent speed >= 70 percent.
    (iii) Percent speed < 78.9 percent, for Percent power > 63.3 percent.
    (iv) Percent power < 3.0 [middot] (100%-percent speed), for
Percent speed >= 78.9 percent.
    (3) Subzone 2b is defined by the following boundaries:
    (i) The line formed by connecting the following two points on a
plot of speed-vs.-power:
    (A) Percent speed = 70 percent; Percent power = 28.7 percent.
    (B) Percent speed = 40 percent at governed speed; Percent power
= 40 percent.
    (ii) Percent power < 0.7 [middot] (percent speed)2.5.

[[Page 37287]]
[GRAPHIC] [TIFF OMITTED] TR06MY08.015

    (e) Figure 4 of this Appendix illustrates the default NTE zone
for constant-speed engines certified using a duty cycle specified in
Sec.  1042.505(b)(3) or (b)(4), as follows:
    (1) Subzone 1 is defined by the following boundaries:
    (i) Percent power >= 70 percent.
    (ii) [Reserved]
    (2) Subzone 2 is defined by the following boundaries:
    (i) Percent power < 70 percent.
    (ii) Percent power >= 40 percent.
    [GRAPHIC] [TIFF OMITTED] TR06MY08.016
   
[[Page 37288]]

    (f) Figure 5 of this Appendix illustrates the default NTE zone
for variable-speed auxiliary marine engines certified using the duty
cycle specified in Sec.  1042.505(b)(5)(ii) or (iii), as follows:
    (1) The default NTE zone is defined by the boundaries specified
in 40 CFR 86.1370-2007(b)(1) and (2).
    (2) A special PM subzone is defined in 40 CFR 1039.515(b).
    [GRAPHIC] [TIFF OMITTED] TR06MY08.017
   
PART 1065--ENGINE-TESTING PROCEDURES

• 45. The authority citation for part 1065 continues to read as follows:

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

Subpart A--[Amended]

• 46. Section 1065.1 is revised to read as follows:

Sec.  1065.1  Applicability.

    (a) This part describes the procedures that apply to testing we
require for the following engines or for vehicles using the following
engines:
    (1) Locomotives we regulate under 40 CFR part 1033. For earlier
model years, manufacturers may use the test procedures in this part or
those specified in 40 CFR part 92 according to Sec.  1065.10.
    (2) Model year 2010 and later heavy-duty highway engines we
regulate under 40 CFR part 86. For earlier model years, manufacturers
may use the test procedures in this part or those specified in 40 CFR
part 86, subpart N, according to Sec.  1065.10.
    (3) Nonroad diesel engines we regulate under 40 CFR part 1039 and
stationary diesel engines that are certified to the standards in 40 CFR
part 1039 as specified in 40 CFR part 60, subpart IIII. For earlier
model years, manufacturers may use the test procedures in this part or
those specified in 40 CFR part 89 according to Sec.  1065.10.
    (4) Marine diesel engines we regulate under 40 CFR part 1042. For
earlier model years, manufacturers may use the test procedures in this
part or those specified in 40 CFR part 94 according to Sec.  1065.10.
    (5) [Reserved]
    (6) Large nonroad spark-ignition engines we regulate under 40 CFR
part 1048, and stationary engines that are certified to the standards
in 40 CFR part 1048 or as otherwise specified in 40 CFR part 60,
subpart JJJJ.
    (7) Vehicles we regulate under 40 CFR part 1051 (such as
snowmobiles and off-highway motorcycles) based on engine testing. See
40 CFR part 1051, subpart F, for standards and procedures that are
based on vehicle testing.
    (8) [Reserved]
    (b) The procedures of this part may apply to other types of
engines, as described in this part and in the standard-setting part.
    (c) The term ``you'' means anyone performing testing under this
part other than EPA.
    (1) This part is addressed primarily to manufacturers of engines,
vehicles, equipment, and vessels, but it applies equally to anyone who
does testing under this part for such manufacturers.
    (2) This part applies to any manufacturer or supplier of test
equipment, instruments, supplies, or any other goods or services
related to the procedures, requirements, recommendations, or options in
this part.
    (d) Paragraph (a) of this section identifies the parts of the CFR
that define emission standards and other requirements for particular
types of engines. In this part, we refer to each of these other parts
generically as the ``standard-setting part.'' For example, 40 CFR part
1051 is always the standard-setting part for snowmobiles and part 86 is
the standard-setting part for heavy-duty highway engines.
    (e) Unless we specify otherwise, the terms ``procedures'' and
``test procedures'' in this part include all aspects of engine testing,
including the equipment specifications, calibrations, calculations, and
other protocols and procedural specifications needed to measure emissions.
    (f) For vehicles, equipment, or vessels subject to this part and
regulated under

[[Page 37289]]

vehicle-based, equipment-based, or vessel-based standards, use good
engineering judgment to interpret the term ``engine'' in this part to
include vehicles, equipment, or vessels, where appropriate.
    (g) For additional information regarding these test procedures,
visit our Web site at www.epa.gov, and in particular
www.epa.gov/otaq/testingregs.htm.

• 47. Section 1065.2 is revised to read as follows:

Sec.  1065.2  Submitting information to EPA under this part.

    (a) You are responsible for statements and information in your
applications for certification, requests for approved procedures,
selective enforcement audits, laboratory audits, production-line test
reports, field test reports, or any other statements you make to us
related to this part 1065.
    (b) In the standard-setting part and in 40 CFR 1068.101, we
describe your obligation to report truthful and complete information
and the consequences of failing to meet this obligation. See also 18
U.S.C. 1001 and 42 U.S.C. 7413(c)(2).
    (c) We may void any certificates or approvals associated with a
submission of information if we find that you intentionally submitted
false, incomplete, or misleading information. For example, if we find
that you intentionally submitted incomplete information to mislead EPA
when requesting approval to use alternate test procedures, we may void
the certificates for all engines families certified based on emission
data collected using the alternate procedures. This would also apply if
you ignore data from incomplete tests or from repeat tests with higher
emission results.
    (d) We may require an authorized representative of your company to
approve and sign the submission, and to certify that all of the
information submitted is accurate and complete. This includes everyone
who submits information, including manufacturers and others.
    (e) See 40 CFR 1068.10 for provisions related to confidential
information. Note however that under 40 CFR 2.301, emission data is
generally not eligible for confidential treatment.
    (f) Nothing in this part should be interpreted to limit our ability
under Clean Air Act section 208 (42 U.S.C. 7542) to verify that engines
conform to the regulations.

• 48. Section 1065.5 is revised to read as follows:

Sec.  1065.5  Overview of this part 1065 and its relationship to the
standard-setting part.

    (a) This part specifies procedures that apply generally to testing
various categories of engines. See the standard-setting part for
directions in applying specific provisions in this part for a
particular type of engine. Before using this part's procedures, read
the standard-setting part to answer at least the following questions:
    (1) What duty cycles must I use for laboratory testing?
    (2) Should I warm up the test engine before measuring emissions, or
do I need to measure cold-start emissions during a warm-up segment of
the duty cycle?
    (3) Which exhaust gases do I need to measure?
    (4) Do any unique specifications apply for test fuels?
    (5) What maintenance steps may I take before or between tests on an
emission-data engine?
    (6) Do any unique requirements apply to stabilizing emission levels
on a new engine?
    (7) Do any unique requirements apply to test limits, such as
ambient temperatures or pressures?
    (8) Is field testing required or allowed, and are there different
emission standards or procedures that apply to field testing?
    (9) Are there any emission standards specified at particular
engine-operating conditions or ambient conditions?
    (10) Do any unique requirements apply for durability testing?
    (b) The testing specifications in the standard-setting part may
differ from the specifications in this part. In cases where it is not
possible to comply with both the standard-setting part and this part,
you must comply with the specifications in the standard-setting part.
The standard-setting part may also allow you to deviate from the
procedures of this part for other reasons.
    (c) The following table shows how this part divides testing
specifications into subparts:

      Table 1 of Sec.   1065.5.--Description of Part 1065 Subparts
------------------------------------------------------------------------
                                   Describes these specifications or
         This subpart                          procedures
------------------------------------------------------------------------
Subpart A....................  Applicability and general provisions.
Subpart B....................  Equipment for testing.
Subpart C....................  Measurement instruments for testing.
Subpart D....................  Calibration and performance verifications
                                for measurement systems.
Subpart E....................  How to prepare engines for testing,
                                including service accumulation.
Subpart F....................  How to run an emission test over a
                                predetermined duty cycle.
Subpart G....................  Test procedure calculations.
Subpart H....................  Fuels, engine fluids, analytical gases,
                                and other calibration standards.
Subpart I....................  Special procedures related to oxygenated
                                fuels.
Subpart J....................  How to test with portable emission
                                measurement systems (PEMS).
------------------------------------------------------------------------

• 49. Section 1065.10 is amended by revising paragraphs (c)(1), (c)(2),
(c)(6), and (c)(7) introductory text to read as follows:

Sec.  1065.10  Other procedures.

* * * * *
    (c) * * *
    (1) The objective of the procedures in this part is to produce
emission measurements equivalent to those that would result from
measuring emissions during in-use operation using the same engine
configuration as installed in a vehicle, equipment, or vessel. However,
in unusual circumstances where these procedures may result in
measurements that do not represent in-use operation, you must notify us
if good engineering judgment indicates that the specified procedures
cause unrepresentative emission measurements for your engines. Note
that you need not notify us of unrepresentative aspects of the test
procedure if measured emissions are equivalent to in-use emissions.
This provision does not obligate you to pursue new information
regarding the different ways your engine might operate in use, nor does
it obligate you to collect any other in-use information to verify
whether or not these test procedures are representative of your
engine's in-use operation. If you notify us of unrepresentative
procedures under this paragraph (c)(1), we will cooperate

[[Page 37290]]

with you to establish whether and how the procedures should be
appropriately changed to result in more representative measurements.
While the provisions of this paragraph (c)(1) allow us to be responsive
to issues as they arise, we would generally work toward making these
testing changes generally applicable through rulemaking. We will allow
reasonable lead time for compliance with any resulting change in
procedures. We will consider the following factors in determining the
importance of pursuing changes to the procedures:
    (i) Whether supplemental emission standards or other requirements
in the standard-setting part address the type of operation of concern
or otherwise prevent inappropriate design strategies.
    (ii) Whether the unrepresentative aspect of the procedures affect
your ability to show compliance with the applicable emission standards.
    (iii) The extent to which the established procedures require the
use of emission-control technologies or strategies that are expected to
ensure a comparable degree of emission control under the in-use
operation that differs from the specified procedures.
    (2) You may request to use special procedures if your engine cannot
be tested using the specified procedures. For example, this may apply
if your engine cannot operate on the specified duty cycle. In this
case, tell us in writing why you cannot satisfactorily test your engine
using this part's procedures and ask to use a different approach. We
will approve your request if we determine that it would produce
emission measurements that represent in-use operation and we determine
that it can be used to show compliance with the requirements of the
standard-setting part.
* * * * *
    (6) During the 12 months following the effective date of any change
in the provisions of this part 1065, you may use data collected using
procedures specified in the previously applicable version of this part
1065. This paragraph (c)(6) does not restrict the use of carryover
certification data otherwise allowed by the standard-setting part.
    (7) You may request to use alternate procedures, or procedures that
are more accurate or more precise than the allowed procedures. The
following provisions apply to requests for alternate procedures:
* * * * *

• 50. Section 1065.12 is amended by revising paragraphs (a) and (d)(1) to
read as follows:

Sec.  1065.12  Approval of alternate procedures.

    (a) To get approval for an alternate procedure under Sec. 
1065.10(c), send the Designated Compliance Officer an initial written
request describing the alternate procedure and why you believe it is
equivalent to the specified procedure. Anyone may request alternate
procedure approval. This means that an individual engine manufacturer
may request to use an alternate procedure. This also means that an
instrument manufacturer may request to have an instrument, equipment,
or procedure approved as an alternate procedure to those specified in
this part. We may approve your request based on this information alone,
or, as described in this section, we may ask you to submit to us in
writing supplemental information showing that your alternate procedure
is consistently and reliably at least as accurate and repeatable as the
specified procedure.
* * * * *
    (d) * * *
    (1) Theoretical basis. Give a brief technical description
explaining why you believe the proposed alternate procedure should
result in emission measurements equivalent to those using the specified
procedure. You may include equations, figures, and references. You
should consider the full range of parameters that may affect
equivalence. For example, for a request to use a different
NOX measurement procedure, you should theoretically relate
the alternate detection principle to the specified detection principle
over the expected concentration ranges for NO, NO2, and interference
gases. For a request to use a different PM measurement procedure, you
should explain the principles by which the alternate procedure
quantifies particulate mass similarly to the specified procedures.
* * * * *

• 51. Section 1065.15 is amended by revising paragraphs (c)(1) and (e)
and adding paragraph (f) to read as follows:

Sec.  1065.15  Overview of procedures for laboratory and field testing.

* * * * *
    (c) * * *
    (1) Engine operation. Engine operation is specified over a test
interval. A test interval is the time over which an engine's total mass
of emissions and its total work are determined. Refer to the standard-
setting part for the specific test intervals that apply to each engine.
Testing may involve measuring emissions and work in a laboratory-type
environment or in the field, as described in paragraph (f) of this
section.
* * * * *
    (e) The following figure illustrates the allowed measurement
configurations described in this part 1065:
BILLING CODE 1505-01-D

[[Page 37291]]
[GRAPHIC] [TIFF OMITTED] TR06MY08.018
BILLING CODE 1505-01-C
[[Page 37292]]

    (f) This part 1065 describes how to test engines in a laboratory-
type environment or in the field.
    (1) This affects test intervals and duty cycles as follows:
    (i) For laboratory testing, you generally determine brake-specific
emissions for duty-cycle testing by using an engine dynamometer in a
laboratory or other environment. This typically consists of one or more
test intervals, each defined by a duty cycle, which is a sequence of
modes, speeds, and/or torques (or powers) that an engine must follow.
If the standard-setting part allows it, you may also simulate field
testing with an engine dynamometer in a laboratory or other environment.
    (ii) Field testing consists of normal in-use engine operation while
an engine is installed in a vehicle, equipment, or vessel rather than
following a specific engine duty cycle. The standard-setting part
specifies how test intervals are defined for field testing.
    (2) The type of testing may also affect what test equipment may be
used. You may use ``lab-grade'' test equipment for any testing. The
term ``lab-grade'' refers to equipment that fully conforms to the
applicable specifications of this part. For some testing you may
alternatively use ``field-grade'' equipment. The term ``field-grade''
refers to equipment that fully conforms to the applicable
specifications of subpart J of this part, but does not fully conform to
other specifications of this part. You may use ``field-grade''
equipment for field testing. We also specify in this part and in the
standard-setting parts certain cases in which you may use ``field-
grade'' equipment for testing in a laboratory-type environment. (Note:
Although ``field-grade'' equipment is generally more portable than
``lab-grade'' test equipment, portability is not relevant to whether
equipment is considered to be ``field-grade'' or ``lab-grade''.)

• 52. Section 1065.20 is amended by revising paragraphs (a)(2), (b)(2),
(f), and (g) to read as follows:

Sec.  1065.20  Units of measure and overview of calculations.

    (a) * * *
    (2) We designate brake-specific emissions in grams per kilowatt-
hour (g/(kW[middot]hr)), rather than the SI unit of grams per megajoule
(g/MJ). In addition, we use the symbol hr to identify hour, rather than
the SI convention of using h. This is based on the fact that engines
are generally subject to emission standards expressed in g/
kW[middot]hr. If we specify engine standards in grams per
horsepower[middot]hour (g/(hp[middot]hr)) in the standard-setting part,
convert units as specified in paragraph (d) of this section.
* * * * *
    (b) * * *
    (2) For all substances, cm3/m3, formerly ppm
(volume).
* * * * *
    (f) Interpretation of ranges. Interpret a range as a tolerance
unless we explicitly identify it as an accuracy, repeatability,
linearity, or noise specification. See Sec.  1065.1001 for the
definition of tolerance. In this part, we specify two types of ranges:
    (1) Whenever we specify a range by a single value and corresponding
limit values above and below that value, target any associated control
point to that single value. Examples of this type of range include
``&plusmn; 10% of maximum pressure'', or ``(30 &plusmn; 10) kPa''.
    (2) Whenever we specify a range by the interval between two values,
you may target any associated control point to any value within that
range. An example of this type of range is ``(40 to 50) kPa''.
    (g) Scaling of specifications with respect to an applicable
standard. Because this part 1065 is applicable to a wide range of
engines and emission standards, some of the specifications in this part
are scaled with respect to an engine's applicable standard or maximum
power. This ensures that the specification will be adequate to
determine compliance, but not overly burdensome by requiring
unnecessarily high-precision equipment. Many of these specifications
are given with respect to a ``flow-weighted mean'' that is expected at
the standard or during testing. Flow-weighted mean is the mean of a
quantity after it is weighted proportional to a corresponding flow
rate. For example, if a gas concentration is measured continuously from
the raw exhaust of an engine, its flow-weighted mean concentration is
the sum of the products of each recorded concentration times its
respective exhaust flow rate, divided by the sum of the recorded flow
rates. As another example, the bag concentration from a CVS system is
the same as the flow-weighted mean concentration, because the CVS
system itself flow-weights the bag concentration. Refer to Sec. 
1065.602 for information needed to estimate and calculate flow-weighted
means. Wherever a specification is scaled to a value based upon an
applicable standard, interpret the standard to be the family emission
limit if the engine is certified under an emission credit program in
the standard-setting part.

Subpart B--[Amended]

• 53. Section 1065.101 is amended by revising paragraph (a) and adding
paragraph (e) before the figures to read as follows:

Sec.  1065.101  Overview.

    (a) This subpart specifies equipment, other than measurement
instruments, related to emission testing. The provisions of this
subpart apply for all engine dynamometer testing where engine speeds
and loads are controlled to follow a prescribed duty cycle. See subpart
J of this part to determine which of the provisions of this subpart
apply for field testing. This equipment includes three broad
categories-dynamometers, engine fluid systems (such as fuel and intake-
air systems), and emission-sampling hardware.
* * * * *
    (e) Dynamometer testing involves engine operation over speeds and
loads that are controlled to a prescribed duty cycle. Field testing
involves measuring emissions over normal in-use operation of a vehicle
or piece of equipment. Field testing does not involve operating an
engine over a prescribed duty cycle.
* * * * *

• 54. Section 1065.110 is amended by revising paragraphs (a) introductory
text and (e) and adding paragraphs (a)(1)(iv) and (f) to read as follows:

Sec.  1065.110  Work inputs and outputs, accessory work, and operator
demand.

    (a) Work. Use good engineering judgment to simulate all engine work
inputs and outputs as they typically would operate in use. Account for
work inputs and outputs during an emission test by measuring them; or,
if they are small, you may show by engineering analysis that
disregarding them does not affect your ability to determine the net
work output by more than &plusmn; 0.5% of the net expected work
output over the test interval. Use equipment to simulate the specific
types of work, as follows:
    (1) * * *
    (iv) You may use any device that is already installed on a vehicle,
equipment, or vessel to absorb work from the engine's output shaft(s).
Examples of these types of devices include a vessel's propeller and a
locomotive's generator.
* * * * *
    (e) Operator demand for shaft work. Operator demand is defined in
Sec.  1065.1001. Command the operator demand and the dynamometer(s) to
follow a prescribed duty cycle with set points for engine speed and
torque as specified in Sec.  1065.512. Refer to the

[[Page 37293]]

standard-setting part to determine the specifications for your duty
cycle(s). Use a mechanical or electronic input to control operator
demand such that the engine is able to meet the validation criteria in
Sec.  1065.514 over each applicable duty cycle. Record feedback values
for engine speed and torque as specified in Sec.  1065.512. Using good
engineering judgment, you may improve control of operator demand by
altering on-engine speed and torque controls. However, if these changes
result in unrepresentative testing, you must notify us and recommend
other test procedures under Sec.  1065.10(c)(1).
    (f) Other engine inputs. If your electronic control module requires
specific input signals that are not available during dynamometer
testing, such as vehicle speed or transmission signals, you may
simulate the signals using good engineering judgment. Keep records that
describe what signals you simulate and explain why these signals are
necessary for representative testing.

• 55. Section 1065.120 is amended by revising paragraph (a) to read as
follows:

Sec.  1065.120  Fuel properties and fuel temperature and pressure.

    (a) Use fuels as specified in the standard-setting part, or as
specified in subpart H of this part if fuels are not specified in the
standard-setting part.
* * * * *
• 56. Section 1065.122 is amended by revising paragraphs (a) introductory
text, (a)(1), and (c) to read as follows:

Sec.  1065.122  Engine cooling and lubrication.

    (a) Engine cooling. Cool the engine during testing so its intake-
air, oil, coolant, block, and head temperatures are within their expected
ranges for normal operation. You may use auxiliary coolers and fans.
    (1) For air-cooled engines only, if you use auxiliary fans you must
account for work input to the fan(s) according to Sec.  1065.110.
* * * * *
    (c) Lubricating oil. Use lubricating oils specified in Sec. 
1065.740. For two-stroke engines that involve a specified mixture of
fuel and lubricating oil, mix the lubricating oil with the fuel
according to the manufacturer's specifications.
* * * * *

• 57. Section 1065.125 is amended by revising paragraphs (c) and (d) and
adding paragraph (e) to read as follows:

Sec.  1065.125  Engine intake air.

* * * * *
    (c) Unless stated otherwise in the standard-setting part, maintain
the temperature of intake air to (25 &plusmn; 5) [deg]C, as
measured upstream of any engine component.
    (d) Use an intake-air restriction that represents production
engines. Make sure the intake-air restriction is between the
manufacturer's specified maximum for a clean filter and the
manufacturer's specified maximum allowed. Measure the static
differential pressure of the restriction at the location and at the
speed and torque set points specified by the manufacturer. If the
manufacturer does not specify a location, measure this pressure
upstream of any turbocharger or exhaust gas recirculation system
connection to the intake air system. If the manufacturer does not
specify speed and torque points, measure this pressure while the engine
outputs maximum power. As the manufacturer, you are liable for emission
compliance for all values up to the maximum restriction you specify for
a particular engine.
    (e) This paragraph (e) includes provisions for simulating charge-
air cooling in the laboratory. This approach is described in paragraph
(e)(1) of this section. Limits on using this approach are described in
paragraphs (e)(2) and (3) of this section.
    (1) Use a charge-air cooling system with a total intake-air
capacity that represents production engines' in-use installation.
Design any laboratory charge-air cooling system to minimize
accumulation of condensate. Drain any accumulated condensate and
completely close all drains before emission testing. Keep the drains
closed during the emission test. Maintain coolant conditions as follows:
    (i) Maintain a coolant temperature of at least 20 [deg]C at the
inlet to the charge-air cooler throughout testing.
    (ii) At the engine conditions specified by the manufacturer, set
the coolant flow rate to achieve an air temperature within &plusmn;
5 [deg]C of the value specified by the manufacturer after the charge-
air cooler's outlet. Measure the air-outlet temperature at the location
specified by the manufacturer. Use this coolant flow rate set point
throughout testing. If the engine manufacturer does not specify engine
conditions or the corresponding charge-air cooler air outlet
temperature, set the coolant flow rate at maximum engine power to
achieve a charge-air cooler air outlet temperature that represents in-
use operation.
    (iii) If the engine manufacturer specifies pressure-drop limits
across the charge-air cooling system, ensure that the pressure drop
across the charge-air cooling system at engine conditions specified by
the manufacturer is within the manufacturer's specified limit(s).
Measure the pressure drop at the manufacturer's specified locations.
    (2) The objective of this section is to produce emission results
that are representative of in-use operation. If good engineering
judgment indicates that the specifications in this section would result
in unrepresentative testing (such as overcooling of the intake air),
you may use more sophisticated setpoints and controls of charge-air
pressure drop, coolant temperature, and flowrate to achieve more
representative results.
    (3) This approach does not apply for field testing. You may not
correct measured emission levels from field testing to account for any
differences caused by the simulated cooling in the laboratory.

• 58. Section 1065.130 is revised to read as follows:

Sec.  1065.130  Engine exhaust.

    (a) General. Use the exhaust system installed with the engine or
one that represents a typical in-use configuration. This includes any
applicable aftertreatment devices.
    (b) Aftertreatment configuration. If you do not use the exhaust
system installed with the engine, configure any aftertreatment devices
as follows:
    (1) Position any aftertreatment device so its distance from the
nearest exhaust manifold flange or turbocharger outlet is within the
range specified by the engine manufacturer in the application for
certification. If this distance is not specified, position
aftertreatment devices to represent typical in-use vehicle configurations.
    (2) You may use exhaust tubing that is not from the in-use exhaust
system upstream of any aftertreatment device that is of diameter(s)
typical of in-use configurations. If you use exhaust tubing that is not
from the in-use exhaust system upstream of any aftertreatment device,
position each aftertreatment device according to paragraph (b)(1) of
this section.
    (c) Sampling system connections. Connect an engine's exhaust system
to any raw sampling location or dilution stage, as follows:
    (1) Minimize laboratory exhaust tubing lengths and use a total
length of laboratory tubing of no more than 10 m or 50 outside
diameters, whichever is greater. The start of laboratory exhaust tubing
should be specified as the exit of the exhaust manifold, turbocharger
outlet, last aftertreatment device, or the in-use exhaust system,
whichever is furthest downstream. The end of laboratory exhaust tubing
should be specified as the sample point, or first point of dilution. If
laboratory exhaust tubing consists of several different outside tubing
diameters, count the

[[Page 37294]]

number of diameters of length of each individual diameter, then sum all
the diameters to determine the total length of exhaust tubing in
diameters. Use the mean outside diameter of any converging or diverging
sections of tubing. Use outside hydraulic diameters of any noncircular
sections. For multiple stack configurations where all the exhaust
stacks are combined, the start of the laboratory exhaust tubing may be
taken at the last joint of where all the stacks are combined.
    (2) You may install short sections of flexible laboratory exhaust
tubing at any location in the engine or laboratory exhaust systems. You
may use up to a combined total of 2 m or 10 outside diameters of
flexible exhaust tubing.
    (3) Insulate any laboratory exhaust tubing downstream of the first
25 outside diameters of length.
    (4) Use laboratory exhaust tubing materials that are smooth-walled,
electrically conductive, and not reactive with exhaust constituents.
Stainless steel is an acceptable material.
    (5) We recommend that you use laboratory exhaust tubing that has
either a wall thickness of less than 2 mm or is air gap-insulated to
minimize temperature differences between the wall and the exhaust.
    (6) We recommend that you connect multiple exhaust stacks from a
single engine into one stack upstream of any emission sampling. To
ensure mixing of the multiple exhaust streams before emission sampling,
you may configure the exhaust system with turbulence generators, such
as orifice plates or fins, to achieve good mixing. We recommend a
minimum Reynolds number, Re#, of 4000 for the combined exhaust stream,
where Re# is based on the inside diameter of the single stack. Re# is
defined in Sec.  1065.640.
    (d) In-line instruments. You may insert instruments into the
laboratory exhaust tubing, such as an in-line smoke meter. If you do
this, you may leave a length of up to 5 outside diameters of laboratory
exhaust tubing uninsulated on each side of each instrument, but you
must leave a length of no more than 25 outside diameters of laboratory
exhaust tubing uninsulated in total, including any lengths adjacent to
in-line instruments.
    (e) Leaks. Minimize leaks sufficiently to ensure your ability to
demonstrate compliance with the applicable standards. We recommend
performing a chemical balance of fuel, intake air, and exhaust
according to Sec.  1065.655 to verify exhaust system integrity.
    (f) Grounding. Electrically ground the entire exhaust system.
    (g) Forced cooldown. You may install a forced cooldown system for
an exhaust aftertreatment device according to Sec.  1065.530(a)(1)(i).
    (h) Exhaust restriction. As the manufacturer, you are liable for
emission compliance for all values up to the maximum restriction(s) you
specify for a particular engine. Measure and set exhaust restriction(s)
at the location(s) and at the engine speed and torque values specified
by the manufacturer. Also, for variable-restriction aftertreatment
devices, measure and set exhaust restriction(s) at the aftertreatment
condition (degreening/aging and regeneration/loading level) specified
by the manufacturer. If the manufacturer does not specify a location,
measure this pressure downstream of any turbocharger. If the
manufacturer does not specify speed and torque points, measure pressure
while the engine produces maximum power. Use an exhaust-restriction
setpoint that represents a typical in-use value, if available. If a
typical in-use value for exhaust restriction is not available, set the
exhaust restriction at (80 to 100)% of the maximum exhaust restriction
specified by the manufacturer, or if the maximum is 5 kPa or less, the
set point must be no less than 1.0 kPa from the maximum. For example,
if the maximum back pressure is 4.5 kPa, do not use an exhaust
restriction set point that is less than 3.5 kPa.
    (i) Open crankcase emissions. If the standard-setting part requires
measuring open crankcase emissions, you may either measure open
crankcase emissions separately using a method that we approve in
advance, or route open crankcase emissions directly into the exhaust
system for emission measurement. If the engine is not already
configured to route open crankcase emissions for emission measurement,
route open crankcase emissions as follows:
    (1) Use laboratory tubing materials that are smooth-walled,
electrically conductive, and not reactive with crankcase emissions.
Stainless steel is an acceptable material. Minimize tube lengths. We
also recommend using heated or thin-walled or air gap-insulated tubing
to minimize temperature differences between the wall and the crankcase
emission constituents.
    (2) Minimize the number of bends in the laboratory crankcase tubing
and maximize the radius of any unavoidable bend.
    (3) Use laboratory crankcase exhaust tubing that meets the engine
manufacturer's specifications for crankcase back pressure.
    (4) Connect the crankcase exhaust tubing into the raw exhaust
downstream of any aftertreatment system, downstream of any installed
exhaust restriction, and sufficiently upstream of any sample probes to
ensure complete mixing with the engine's exhaust before sampling.
Extend the crankcase exhaust tube into the free stream of exhaust to
avoid boundary-layer effects and to promote mixing. You may orient the
crankcase exhaust tube's outlet in any direction relative to the raw
exhaust flow.

• 59. Section 1065.140 is revised to read as follows:

Sec.  1065.140  Dilution for gaseous and PM constituents.

    (a) General. You may dilute exhaust with ambient air, synthetic
air, or nitrogen. For gaseous emission measurement the diluent must be
at least 15[deg]C. Note that the composition of the diluent affects
some gaseous emission measurement instruments' response to emissions.
We recommend diluting exhaust at a location as close as possible to the
location where ambient air dilution would occur in use.
    (b) Dilution-air conditions and background concentrations. Before a
diluent is mixed with exhaust, you may precondition it by increasing or
decreasing its temperature or humidity. You may also remove
constituents to reduce their background concentrations. The following
provisions apply to removing constituents or accounting for background
concentrations:
    (1) You may measure constituent concentrations in the diluent and
compensate for background effects on test results. See Sec.  1065.650
for calculations that compensate for background concentrations.
    (2) Either measure these background concentrations the same way you
measure diluted exhaust constituents, or measure them in a way that
does not affect your ability to demonstrate compliance with the
applicable standards. For example, you may use the following
simplifications for background sampling:
    (i) You may disregard any proportional sampling requirements.
    (ii) You may use unheated gaseous sampling systems.
    (iii) You may use unheated PM sampling systems.
    (iv) You may use continuous sampling if you use batch sampling for
diluted emissions.
    (v) You may use batch sampling if you use continuous sampling for
diluted emissions.

[[Continued on page 37295]]

 
 


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