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Retrofit/Rebuild Requirements for 1993 and Earlier Model Year Urban Buses; Approval of a Notification of Intent to Certify Equipment
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
[Federal Register: April 17, 1996 (Volume 61, Number 75)] [Notices] [Page 16773-16779] From the Federal Register Online via GPO Access [wais.access.gpo.gov]
ENVIRONMENTAL PROTECTION AGENCY [FRL-5458-4] Retrofit/Rebuild Requirements for 1993 and Earlier Model Year Urban Buses; Approval of a Notification of Intent to Certify Equipment AGENCY: Environmental Protection Agency. ACTION: Notice of Agency Certification of Equipment for the Urban Bus Retrofit/Rebuild Program.
SUMMARY: The Agency received a notification of intent to certify equipment signed September 6, 1996 from Johnson Matthey Inc. (Johnson Matthey) with principal place of business at 460 East Swedesford Road, Wayne, PA 19087-1880 for certification of urban bus retrofit/rebuild equipment pursuant to 40 CFR 85.1401-85.1415. The equipment is applicable to petroleum-fueled Detroit Diesel Corporation (DDC) twocycle engines originally installed in an urban bus from model year 1979 to model year 1993, exclusive of the DDC 6L71TA 1990 model year engines, all alcohol fueled engines, and models which were manufactured with particulate trap devices (see Table A). On December 13, 1995, EPA published a notice in the Federal Register that the notification had been received and made the notification available for public review and comment for a period of 45-days (60 FR 64048). EPA has completed its review of this notification, and the comments received, and the Director of the Engine Programs and Compliance Division has determined that it meets all the requirements for certification. Accordingly, EPA approves the certification of this equipment. The certified equipment provides 25 percent or greater reduction in exhaust emissions of particulate matter (PM) for the engines for which it is certified.
The Johnson Matthey notification, as well as other materials specifically relevant to it, are contained in Public Docket A-93-42, category XI, 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 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. DATES: The date of this notice April 17, 1996 is the effective date of certification for the equipment described in the Johnson Matthey notification. This certified equipment may be used immediately by urban bus operators. Operators who have chosen to comply with program 1 or program 2 can utilize this equipment or other equipment that is certified for any engine that is listed in Table A that undergoes rebuild. FOR FURTHER INFORMATION CONTACT: Anthony Erb, Engine Compliance Programs Group, Engine Program & Compliance Division (6403J), U.S. Environmental Protection Agency, 401 M St. SW, Washington, D.C. 20460. Telephone: (202) 233-9259. SUPPLEMENTARY INFORMATION: I. Background By a notification of intent to certify signed September 6, 1995, Johnson Matthey applied for certification of equipment applicable to petroleum-fueled Detroit Diesel Corporation (DDC) two-cycle engines originally installed in an urban bus from model year 1979 to model year 1993, exclusive of the DDC 6L71TA 1990 model year engines and models which were manufactured with particulate trap devices or alcohol fueled (see Table A). The notification of intent to certify states that the equipment being certified is a catalytic exhaust muffler (CEM). The CEM contains an oxidation catalyst developed specifically for diesel applications, packaged as a direct replacement for the muffler. The application demonstrates that the candidate equipment provides a 25 percent or greater reduction in emissions of particulate matter (PM) for petroleum fueled diesel engines relative to an original engine configuration with no after treatment installed. Certification is applicable to engines that are rebuilt to original specifications, or in-use engines that are not rebuilt at the time the CEM is installed provided the engine meets engine oil consumption limits specified by Johnson Matthey. According to Johnson Matthey, a 6V engine that uses more than one quart of oil per 10 hours of operation, or an 8V engine that uses more than 1.5 quarts of oil per 10 hours of operation, must be rebuilt. Johnson Matthey is also certifying a 25 percent reduction in PM for engines that are retrofit/rebuilt with certified new rebuild kits that do not include after treatment devices. This will apply only when the CEM is installed at the same time the retrofit/rebuild occurs. Currently, this applies to the DDC retrofit/rebuild kit which was certified on October 2, 1995 (60 FR 51472). Certification of the Johnson Matthey CEM does not trigger any new program requirements for applicable engines, as the requirement to use equipment certified to achieve at least a 25reduction has already been triggered for these engines. Johnson Matthey stated that it would offer the equipment for less than $2000 (in 1992 dollars). The CEM contains an oxidation catalyst developed specifically for diesel applications, packaged as a direct replacement for the muffler. Using engine dynamometer testing in accordance with the Federal Test Procedure for heavy-duty diesel engines, Johnson Matthey documented significant reductions in PM emissions after retrofit. This amounted to a 50PM reduction in the pre-rebuild retrofit test and a 38reduction in the post-rebuild retrofit test. The test data show that engines with the certified retrofit equipment installed comply with applicable Federal emission standards for hydrocarbon (H.C.), carbon monoxide (CO), oxides of nitrogen (NO), and smoke emissions in addition to demonstrating reductions in PM exhaust emissions. [[Page 16774]] Table A. Certification Levels PM level Engine models Model year \1\ with Code Family 6V92TA MUI \2\ 1979-87 0.38 All All 1988-1989 0.23 All All 6V92TA DDEC I 1986-89 0.23 All All 6V92TA DDEC II 1988-91 0.23 All All 1992-93 0.19 All All 6V71N 1973-87 0.38 All All 6V71N 1988-89 0.38 All All 6V71T 1985-86 0.38 All All 8V71N 1973-84 0.38 All All 6L71TA 1988-89 0.23 All All 6LV71TA DDEC 1990-91 0.23 All All 8V92TA 1979-87 0.38 All 8V92TA 1988 0.29 All 8V92TA 8V92TA-DD 1988 0.31 All 8V92TA-DDEC II 8V92TA 1989 0.35 9E70 KDD0736FWH9 8V92TA 1989 0.29 9A90 KDD0736FWH9 8V92TA 1989 0.26 9G85 KDD0736FWH9 8V92TA DDEC 1989 0.31 1A KDD0736FZH4 8V92TA 1990 0.35 9E70 LDD0736FAH9 8V92TA DDEC 1990 0.37 1A LDD0736FZH3 8V92TA DDEC 1991 0.19 1A or 5A MDD0736FZH2 8V92TA DDEC 1992-93 0.16 1D NDD0736FZH1 & PDD0736FZHX 8V92TA DDEC 1992-93 0.22 6A NDD0736FZH1 & PDD0736FZHX 8V92TA DDEC 1992-93 0.15 5A NDD0736FZH1 & PDD0736FZHX 8V92TA DDEC 1992-93 0.19 1A NDD0736FZH1 & PDD0736FZHX original certification levels.