[Federal Register Volume 60, Number 175 (Monday, September 11, 1995)]
[Notices]
[Pages 47170-47171]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 95-22491]



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ENVIRONMENTAL PROTECTION AGENCY

[FRL-5294-3]


Retrofit/Rebuild Requirements for 1993 and Earlier Model Year 
Urban Buses; Approval of an Application for Certification of Equipment

AGENCY: Environmental Protection Agency.

ACTION: Notice of agency approval of an application for equipment 
certification.

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SUMMARY: The Agency received an application dated October 24, 1994 from 
the Engelhard Corporation (Engelhard) with principal place of business 
at 101 Wood Avenue, Iselin, New Jersey for certification of urban bus 
retrofit/rebuild equipment pursuant to 40 CFR 85.1401-85.1415. On March 
6, 1995 EPA published notification that the application had been 
received and made the application available for public review and 
comment for a period of 45 days (60 FR 12185). EPA has completed its 
review of this application and the Director of the Manufacturers 
Operations Division has determined that it meets all the requirements 
for certification. Accordingly, EPA approves the certification of this 
equipment effective September 11, 1995.
    The candidate equipment provides a reduction in emissions of 
particulate matter (PM) for Detroit Diesel Corporation 6V92TA 
MUI(mechanical unit injection) petroleum fueled diesel engines. The 
certification of this equipment is applicable under program 2 only. It 
does not apply for operators utilizing Program 1 as Engelhard 
specifically applied under Program 2 only and did not perform the 
additional testing required for Program 1 certification.
    The Engelhard application, as well as other materials specifically 
relevant to it, are contained in Public Docket A-93-42, entitled 
``Certification of Urban Bus Retrofit/Rebuild Equipment''. This docket 
is located in room M-1500, Waterside Mall (Ground Floor), U.S. 
Environmental Protection Agency, 401 M Street SW, Washington, DC 20460. 
Docket items may be inspected from 8:00 a.m. until 4:00 p.m., Monday 
through Friday. As provided in 40 CFR 

[[Page 47171]]
Part 2, a reasonable fee may be charged by the Agency for copying 
docket materials.

DATES: The date of this notice, September 11, 1995, is the official 
certification date for this application. The equipment is immediately 
available for installation.

FOR FURTHER INFORMATION CONTACT: Anthony Erb, Technical Support Branch, 
Manufacturers Operations Division (6405J), U.S. Environmental 
Protection Agency, 401 M St. SW, Washington, D.C. 20460. Telephone: 
(202) 233-9259.

SUPPLEMENTARY INFORMATION:

I. Background

    On October 24, 1995 Engelhard applied for certification of a kit, 
for use on 2-cycle petroleum fueled diesel DDC 6V92TA MUI urban bus 
engines for the 1979 through 1989 model years, that includes a 
catalytic converter muffler (CCM) and incorporates a ceramic in-
cylinder coating applied to the piston crowns, valve face and fire deck 
on the engine head. The application was submitted under EPA's Urban 
Bus/Retrofit program under Program 2 only.1

    \1\EPA promulgated the Retrofit/Rebuild Requirements for 1993 
and Earlier Model Year Urban Buses on April 23, 1993 (58 FR 21359). 
This final rule established the provisions for an urban bus 
retrofit/rebuild program as required by section 219(d) of the Clean 
Air Act Amendments (CAAA) of 1990.
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    The CCM functions as a catalytic converter and a muffler. It takes 
the place of the original muffler in the engine exhaust system. Through 
testing in accordance with the Federal Test Procedure for heavy-duty 
diesel engines, Engelhard documented that emissions of particulate 
matter (PM) were reduced to a level of 0.22 g/bhp-hr with the candidate 
equipment installed. Engelhard is certifying this equipment to a 
maximum PM emission level of 0.25g/bhp-hr.

                                         Table A.--Certification Levels                                         
----------------------------------------------------------------------------------------------------------------
                                                                          PM level                              
                                                                            with                                
                                                                          standard                              
                       Engine model                         Model year   rebuild and      Code         Family   
                                                                         addition of                 designation
                                                                         CCM and GPX                            
                                                                           coating                              
----------------------------------------------------------------------------------------------------------------
DDC 6V92TA MUI...........................................    1979-1989         0.25           All          All. 
----------------------------------------------------------------------------------------------------------------

    Emission test results supplied by Engelhard in the application are 
shown in Table B. The test data show the reduction in PM. Hydrocarbon 
(HC), carbon monoxide (CO), oxides of nitrogen (NOX) and smoke 
emissions were within the applicable emission standards with the CCM 
installed.

        Table B. Certification Emission Test Results (GM/BHP-HR)        
------------------------------------------------------------------------
                                                                 Rebuilt
                                                                 engine 
                                                      Baseline    with  
                                                       engine   catalyst
                                                       before   and GPX-
                                                       rebuild      4   
                                                                 coating
------------------------------------------------------------------------
HC..................................................      1.19     0.23 
CO..................................................      2.53     0.46 
NOX.................................................      9.55     5.53 
PM..................................................      0.87     0.22 
Smoke Test:                                                             
  Accel.............................................  ........     6.0% 
  Lug...............................................  ........     3.4% 
  Peak..............................................  ........     7.6% 
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    Urban bus operators who choose to comply with Program 2 and use the 
Engelhard equipment will use the PM emission value from Table A when 
calculating their average fleet PM level.

II. Summary and Analysis of Comments

    EPA received comments from one party on this Engelhard application 
during the comment period. The Greater Bridgeport Transit District 
stated that their experience using GPX-4 ceramic coatings since 1991 
has been positive. The engines have gotten better fuel economy, emitted 
less smoke, and consumed less lubrication oil. A copy of the comments 
can be found in EPA Docket A-93-42.

III. Certification Approval

    The Agency has reviewed this application, along with comments 
received from interested parties, and finds that this equipment reduces 
particulate matter emissions without causing urban bus engines to fail 
to meet any applicable Federal emission requirements. Additionally, EPA 
finds that installation of this equipment will not cause or contribute 
to an unreasonable risk to the public health, welfare or safety, or 
result in any additional range of parameter adjustability or 
accessibility to adjustment than that of the engine manufacturer's 
emission related part. The application meets the requirements for 
certification under the Retrofit/Rebuild Requirements for 1993 and 
Earlier Model Year Urban Buses (40 CFR 85.1401 and 85.1415). Thus, the 
Agency hereby approves the certification of this equipment.

IV. Operator Requirements and Responsibilities

    For operators who have chosen to comply with Program 2, this 
equipment is immediately available for use and those who use this 
certified kit may claim the PM emissions reduction as stated in Table A 
when calculating their Fleet Level Attained.
    As stated in the regulations, operators should maintain records for 
each engine in their fleet to demonstrate that they are in compliance 
with the requirements beginning in January 1, 1995. These records 
include purchase records, receipts, and part numbers for the parts and 
components used in the rebuilding of urban bus engines.
Mary D. Nichols,
Assistant Administrator for Air and Radiation.
[FR Doc. 95-22491 Filed 9-8-95; 8:45 am]
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