[Federal Register Volume 60, Number 119 (Wednesday, June 21, 1995)]
[Notices]
[Pages 32316-32318]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 95-15216]
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ENVIRONMENTAL PROTECTION AGENCY
[FRL-5221-3]
Retrofit/Rebuild Requirements for 1993 and Earlier Model Year
Urban Buses; Public Review of a Notification of Intent To Certify
Equipment
AGENCY: Environmental Protection Agency.
ACTION: Notice of agency receipt of a notification of intent to certify
equipment and initiation of 45 day public review and comment period.
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SUMMARY: The Agency has received a notification of intent to certify
urban bus retrofit/rebuild equipment pursuant to 40 CFR Part 85,
Subpart O from the Cummins Engine Company, Inc. (Cummins). Pursuant to
Sec. 85.1407(a)(7), today's Federal Register notice summarizes the
notification below, announces that the notification is available for
public review and comment, and initiates a 45-day period during which
comments can be submitted. The Agency will review this notification of
intent to certify, as well as comments received, to determine whether
the equipment described in the notification of intent to certify should
be certified. If certified, the equipment can be used by urban bus
operators to reduce the particulate matter of urban bus engines.
The Cummins notification of intent to certify, as well as other
materials specifically relevant to it, is contained in category VIII-A
of Public Docket A-93-42, entitled ``Certification of Urban Bus
Retrofit/Rebuild Equipment.'' This docket is at the address below.
Today's notice initiates a 45-day period during which the Agency
will accept written comments relevant to whether or not the equipment
included in this notification of intent to certify should be certified.
Comments should be provided in writing to Public Docket A-93-42,
Category VIII-A, at the address below. An identical copy should be
submitted to Anthony Erb, also at the address below.
DATES: Comments must be submitted on or before August 7, 1995.
ADDRESSES: Submit separate copies of comments to the two following
addresses:
1. U.S. Environmental Protection Agency, Public Docket A-93-42
(Category VIII-A), Room M-1500, 401 M Street SW., Washington, D.C.
20460.
2. Anthony Erb, Technical Support Branch, Manufacturers Operations
Division (6405J), 401 ``M'' Street SW., Washington, D.C. 20460.
Docket items may be inspected from 8:00 a.m. until 5:30 p.m.,
Monday through Friday. As provided in 40 CFR Part 2, a reasonable fee
may be charged by the Agency for copying docket materials.
FOR FURTHER INFORMATION CONTACT: Anthony Erb, Manufacturers Operations
Division (6405J), U.S. Environmental Protection Agency, 401 M Street
SW., Washington, D.C. 20460. Telephone: (202) 233-9259.
SUPPLEMENTARY INFORMATION:
I. Background
On April 21, 1993, the Agency published final Retrofit/Rebuild
Requirements for 1993 and Earlier Model Year Urban Buses (58 FR 21359).
The retrofit/rebuild program is intended to reduce the ambient levels
of [[Page 32317]] particulate matter (PM) in urban areas and is limited
to 1993 and earlier model year (MY) urban buses operating in
metropolitan areas with 1980 populations of 750,000 or more, whose
engines are rebuilt or replaced after January 1, 1995. Operators of the
affected buses are required to choose between two compliance programs:
Program one sets particulate matter emissions requirements for each
urban bus engine in an operator's fleet which is rebuilt or replaced;
Program two is a fleet averaging program that establishes specific
annual target levels for average PM emissions from urban buses in an
operator's fleet.
Certification of retrofit/rebuild equipment is a key element of the
retrofit/rebuild. To show compliance under either of the compliance
programs, operators of the affected buses must use equipment that has
been certified by the Agency. Emissions requirements under either of
the two compliance programs depend on the availability of certified
retrofit/rebuild equipment for each engine model. To be used for
Program one, equipment must be certified as meeting a 0.10 g/bhp-hr PM
standard or as achieving a 25 percent reduction in PM. Equipment used
for Program two must be certified as providing some level of PM
reduction that would in turn be claimed by urban bus operators when
calculating their average fleet PM levels attained under the program.
For Program one, information on life cycle costs must be submitted in
the notification of intent to certify in order for certification of the
equipment to initiate (or trigger) program requirements. To trigger
program requirements, the certifier must guarantee that the equipment
will be available to all affected operators for a life cycle cost of
$7,940 or less at the 0.10 g/bhp-hr PM level, or for a life cycle cost
of $2,000 or less for the 25 percent or greater reduction in PM. Both
of these values are based on 1992 dollars.
II. Notification of Intent To Certify
By a notification of intent to certify signed March 13, 1995,
Cummins has applied for certification of equipment applicable to its
LTA10-B model engines that were originally manufactured between
November 1985 and December 1992. The pending equipment certification is
applicable to the following configurations:
------------------------------------------------------------------------
Control Manufacture dates\1\
parts ---------------------
Family list
(CPL) Start End
------------------------------------------------------------------------
343B................................... 0780 11/20/85 12/31/87
0781 11/20/85 12/31/87
343C................................... 0774 11/20/85 12/31/89
0777 11/20/85 12/31/89
0996 12/04/87 08/19/88
1226 07/26/88 12/31/90
343F................................... 1226 07/12/90 08/26/92
1441 12/18/90 12/31/92
1622 04/24/92 12/31/92
1624 04/24/92 12/31/92
------------------------------------------------------------------------
\1\Equipment certification will be applicable to those engines
originally built between the start and end dates for the appropriate
configuration.
Two separate horsepower/torque ratings are to apply for each CPL
listed, either 240 horsepower and 750 foot-pounds of torque or 270
horsepower and 860 foot-pounds of torque. The notification of intent to
certify states that the candidate equipment will reduce PM emissions 25
percent or more, on petroleum-fueled diesel engines that have been
rebuilt to Cummins specifications. Pricing information has been
submitted with the notification, along with a guarantee that the
equipment will be offered to all affected operators for less than the
incremental life cycle cost ceiling. Therefore, this equipment may
trigger program requirements for the 25% reduction standard. If
certified as a trigger of this standard, urban bus operators will be
required to use this retrofit/rebuild equipment or other equipment
certified to provide a PM reduction as discussed below.
All components of the candidate equipment are contained in
combination of two kits. The first kit is common to both horsepower/
torque ratings and consists of a camshaft, cam key, cylinder kits, and
a fuel plumbing kit. The second kit contains the injectors, cylinder
head, turbocharger and fuel pump and is ordered based on the
horsepower/torque rating that is wanted. The first kit in combination
with one of the second kits is required to rebuild an engine.
Cummins presents exhaust emission data from testing a new engine
that was selected directly from the assembly and built to a
configuration to which all rebuilt engines that are included under this
certification will be made identical. Two tests were conducted, one
test was performed on the engine with the 240/750 (horsepower/torque)
rating and a second test was conducted on the same engine after
retrofit with the components needed to achieve the 270/860 rating. The
test data show a PM level of 0.28 g/bhp-hr for the 240/750 rating and a
PM level of 0.24 g/bhp-hr for the 270/860 rating with the candidate
equipment installed.
Cummins has also provided new engine certification and other
emissions data providing the baseline PM level for each engine
configuration. The test data show that with candidate equipment
installed, PM is reduced between 38% and 61% depending upon the engine
and rating being compared. The test data also show that hydrocarbon
(HC), carbon monoxide (CO), and oxides of nitrogen (NOX) are less
than applicable standards. Fuel consumption is not affected when the
candidate equipment is installed according to Cummins. Cummins presents
smoke emission measurements for the engine demonstrating compliance
with applicable standards.
Cummins indicates that the candidate equipment will have an
incremental fleet purchase price increase over the standard rebuild of
$1435.29 due to the increased cost for the components. Cummins states
that there will be no incremental installation cost, fuel cost, or
maintenance cost compared to the currently available standard rebuild.
Therefore, the candidate equipment will be offered to all affected
operators for less than a life cycle cost of $2,000 (1992 dollars).
This information may trigger the 25 percent reduction standard if the
equipment is certified.
If the Agency certifies the candidate Cummins equipment as a
trigger of program requirements, operators will be affected as follows.
Under Program 1, all rebuilds of applicable engines performed six
months following the effective date of certification, must use the
Cummins equipment or other equipment certified to provide at least a 25
percent reduction. This requirement would continue for the applicable
engines until such time that equipment was certified to trigger the
0.10 g/bhp-hr emission standard for less than a life cycle cost of
$7,940 (in 1992 dollars). If the Agency certifies the candidate Cummins
equipment as a trigger of program requirements, operators who choose to
comply with Program 2 and install this equipment, will use the PM
emission level(s) established during the certification review process,
in their calculations for target or fleet level as specified in the
program regulations.
At a minimum, EPA expects to evaluate this notification of intent
to certify, and other materials submitted as applicable, to determine
whether there is adequate demonstration of compliance with: (1) the
certification requirements of Sec. 85.1406, including whether the
testing accurately proves the claimed emission reduction or
[[Page 32318]] emission levels; and, (2) the requirements of
Sec. 85.1407 for a notification of intent to certify, including whether
the data provided by Cummins complies with the life cycle cost
requirements.
The Agency requests that those commenting also consider these
regulatory requirements, plus provide comments on any experience or
knowledge concerning: (a) problems with installing, maintaining, and/or
using the candidate equipment on applicable engines; and, (b) whether
the equipment is compatible with affected vehicles.
The date of this notice initiates a 45-day period during which the
Agency will accept written comments relevant to whether or not the
equipment described in the Cummins notification of intent to certify
should be certified pursuant to the urban bus retrofit/rebuild
regulations. Interested parties are encouraged to review the
notification of intent to certify and provide comment during the 45-day
period. Please send separate copies of your comments to each of the
above two addresses.
The Agency will review this notification of intent to certify,
along with comments received from interested parties, and attempt to
resolve or clarify issues as necessary. During the review process, the
Agency may add additional documents to the docket as a result of the
review process. These documents will also be available for public
review and comment within the 45-day period.
Richard D. Wilson,
Acting Assistant Administrator for Air and Radiation.
[FR Doc. 95-15216 Filed 6-20-95; 8:45 am]
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