Federal Register / Vol. 62, No. 228 / Wednesday, November 26, 1997 / Notices 63159

1The DDC 6V92TA MUI upgrade kit was certified

by EPA on October 2, 1995 (60 FR 51472). The DDC

6V92TA DDECII upgrade kit was certified by EPA

on July 19, 1996 (61 FR 37738).

Dated: November 20, 1997.

Leslie A. Jones,

Acting Branch Chief of Site Remediation

Enforcement, Policy Guidance Branch.

[FR Doc. 97–31141 Filed 11–25–97; 8:45 am]

BILLING CODE 6560–50–P

ENVIRONMENTAL PROTECTION

AGENCY

[FRL–5927–9]

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 March 11, 1997 from

Nelson Industries, Inc., Nelson Division

(Nelson) with principal place of

business at 1801 Highway 51 West, P.O.

Box 428, Stoughton, WI, 53589 for

certification of urban bus retrofit/

rebuild equipment pursuant to 40 CFR

85.1401 through 85.1415. The

equipment is applicable to petroleumfueled Detroit Diesel Corporation (DDC)

two-stroke/cycle engines originally

installed in urban buses from model

year 1979 to model year 1993, excluding

the DDC 6L71TA 1990 model year

engines, all alcohol fueled engines, and

models which were manufactured with

particulate trap devices. In addition, the

equipment is applicable to engines

which have been previously rebuilt

using the certified DDC 6V92TA MUI or

DDECII upgrade kits.1 On July 11, 1997,

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 (62 FR

37228). EPA received no comments in

response to that Federal Register notice.

Subsequently, EPA has completed its

review of this notification, and the

Director of the Engine Programs and

Compliance Division has determined

that it meets all the requirements for

certification. Accordingly, EPA certified

this equipment in a letter to Nelson

Industries dated October 14, 1997.

The certified equipment provides 25

percent or greater reduction in exhaust

emissions of particulate matter (PM) for

the engines for which it is certified. In

addition, this equipment is certified as

complying with a life cycle cost limit of

$2,000 or less (in 1992 dollars).

The Nelson notification, as well as

other materials specifically relevant to

it, are contained in Public Docket A–93–

42, category XIX, 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 effective date of certification

is October 14, 1997, established in a

letter from EPA to Nelson Industries.

This certified equipment may be used

immediately by urban bus operators.

The impact of this certification on

transit operators is discussed in more

detail in section IV of today’s notice.

FOR FURTHER INFORMATION CONTACT: Tom

Stricker, Engine Compliance Programs

Group, Engine Program and Compliance

Division (6403J), U.S. Environmental

Protection Agency, 401 M St. SW,

Washington, D.C. 20460. Telephone:

(202) 564–9322.

SUPPLEMENTARY INFORMATION:

I. Background

By a notification of intent to certify

signed March 11, 1997, Nelson 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,

excluding the DDC 6L71TA 1990 model

year engines and models which were

manufactured with particulate trap

devices or alcohol fueled. In addition,

Nelson requested certification for

engines rebuilt using the certified DDC

6V92TA MUI or DDECII upgrade kits

when the CEM is installed at the same

time as the DDC rebuild kit. The

notification of intent to certify states

that the equipment being certified is a

catalytic exhaust muffler (Nelson

converter), 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 Nelson converter is

installed provided the engine is

calibrated to meet the original

manufacturer’s specifications and meets

engine oil consumption limits specified

by Nelson. According to Nelson, a 6-

cylinder engine that uses more than

one-and-a-half quarts of oil per 10 hours

of operation, or an 8-cylinder engine

that uses more than 2.0 quarts of oil per

10 hours of operation, must be rebuilt.

The Nelson Converter is certified for use

on engines rebuilt using new DDC

certified rebuild kits only in those

instances where the Nelson converter is

installed at the same time the DDC

rebuild kit is installed on the engine.

Using engine dynamometer testing in

accordance with the Federal Test

Procedure for heavy-duty diesel

engines, Nelson documented a 53% PM

reduction for the test engine retrofit

with the Nelson Converter compared to

a standard rebuild. The test engine with

the certified retrofit equipment installed

complies with applicable Federal

emission standards for hydrocarbon

(HC), carbon monoxide (CO), oxides of

nitrogen (NOX), and smoke emissions in

addition to demonstrating reductions in

PM exhaust emissions.

Table A below lists the engine models

covered by this certification, and the PM

level to which each model is certified.

The Nelson equipment is certified to

reduce PM emissions by 25 percent. The

certification level (shown as ‘‘PM Level

with Converter’’ in Table A) represents

a 25 percent reduction in PM emissions

compared to the pre-rebuild PM level

shown in the table at 40 CFR Section

85.1403(c)(1)(iii)(A).

TABLE A.—CERTIFICATION LEVELS

Engine models Model year

PM level

with converterCode Family

6V92TA MUI 2 ................................................................................... 1979–87 0.38 All All.
63160 Federal Register / Vol. 62, No. 228 / Wednesday, November 26, 1997 / Notices

TABLE A.—CERTIFICATION LEVELS—Continued

Engine models Model year

PM level

with converterCode Family

1988–1989 0.23 All All.

6V92TA DDEC I ............................................................................... 1986–89 0.23 All All.

6V92TA DDEC II 3 ............................................................................ 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.

6L71TA DDEC .................................................................................. 1990–91 0.23 All All.

8V92TA ............................................................................................. 1979–87 0.38 All 8V92TA.

1988 0.29 All

8V92TA..

8V92TA–DDEC ................................................................................ 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 &

PDD0736FZH X.

8V92TA DDEC ................................................................................. 1992–93 0.22 6A NDD0736FZH 1 &

PDD0736FZH X.

8V92TA DDEC ................................................................................. 1992–93 0.15 5A NDD0736FZH 1 &

PDD0736FZHX.

8V92TA DDEC ................................................................................. 1992–93 0.19 1A NDD0736FZH 1 &

PDD0736FZHX.

2For 6V92TA MUI models that are rebuilt using a certified DDC emissions retrofit kit, Nelson is certifying the PM engine emissions to a level of

0.22 g/bhp-hr for the 1979 to 1987 models and to a level of 0.17 g/bhp-hr for the 1988–1989 models provided the Nelson converter is installed at

the same time the rebuild with the DDC upgrade takes place. The DDC 6V92TA MUI upgrade kit certification notification was published in the

Federal Register on October 2, 1995 (60FR51472). 3For the 6V92TA DDECII models that are rebuilt using a certified DDC emissions retrofit kit, Nelson is certifying the PM engine emissions to a

level of 0.17 g/bhp-hr for 1988–1990 models provided the Nelson converter is installed at the same time the rebuild with the DDC upgrade takes

place. The DDC 6V92TA DDECII upgrade kit certification notification was published in the Federal Register on July 19, 1996 (61 FR 37738).

Note: The original PM certification levels for the 1991 6V92TA DDEC II, 6LV71TA DDEC and 8V92TA DDEC engine models are based on

Federal Emission Limits (FELs)under the averaging, banking and trading program. These limits are higher than the 1991 PM standard of 0.25 g/

bhp-hr. The PM level listed in this table for the engines that are equipped with the Nelson converter provide at least a 25% reduction from the

original certification levels. The 1992 to 1993 6V92TA DDEC II and 8V92TA DDEC engine models were also certified using FELs under the trading and banking program and likewise the PM levels for the engines equipped with the Nelson converter represent at least a 25% reduction from

the original certification levels.

In addition to reducing PM emissions

by 25% or more, this equipment is

certified to comply with a life cycle cost

limit of $2,000 or less (in 1992 dollars).

The maximum purchase price for the

Nelson converter is $2,091 (in August

1997 dollars), and the maximum

installation time is stated to be 5 hours,

or $201 (in August 1997 dollars). Nelson

states that no additional maintenance

cost is associated with use of the Nelson

converter, and the test data demonstrate

no fuel economy impact. Thus, the

maximum total life cycle cost for this

equipment is $2,292 (in August 1997

dollars), or $2,000 (in 1992 dollars).

Although this equipment meets the life

cycle cost limit associated with 25%

reduction technology, this certification

does not trigger any new program

requirements for applicable engines.

The requirement to use equipment

certified to achieve at least a 25%

reduction in PM has previously been

triggered for some of these engines and

is superseded by the 0.10 g/bhp-hr PM

standard that has been triggered for

1979–89 DDC 6V92TA MUI engines.

The impact of this certification on

transit operators is discussed in more

detail in section IV of today’s notice.

II. Summary and Analysis of Comments

EPA received no comments in

response to the July 11, 1997 Federal

Register notice. However, EPA

requested clarification from Nelson

regarding several issues discussed

below.

The Notification of Intent to Certify

(NIC) describes the baseline rebuilt

engine used in emissions testing as

having 9G75 fuel injectors rated at 294

horsepower (HP). However, the NIC also

states that the initial run-in power for

the engine was 277 HP. Nelson was

asked to explain this apparent

discrepancy in rated HP versus observed

HP. In response, Nelson states that the

engine was rebuilt by DDC with 9G75

fuel injectors rated at 294 HP, although

the engine only produced 277 HP upon

initial run-in. Nelson states that the

DDC power rating has a tolerance of

plus/minus 5% (279 to 306 HP for a 294

HP rating). After additional break-in in

the test cell, the engine produced 283

HP (within the tolerance range) as

documented in the laboratory checklist

contained in the NIC.

Nelson requested that certification be

granted for the Nelson converter

installed on rebuilt, and non-rebuilt

engines. EPA requested that Nelson

provide a rationale to support why the

claimed PM reductions are appropriate

for engines which have not been rebuilt.

In response, Nelson states that the

installation instructions provide criteria
Federal Register / Vol. 62, No. 228 / Wednesday, November 26, 1997 / Notices 63161

which must be met in order to install

the Nelson converter on non-rebuilt

engines. These criteria include

maintenance of the engine in

accordance with the original engine

manufacturer’s specifications,

adjustment of all adjustable parameters

in accordance with manufacturer’s

specifications, and oil consumption

criteria. For 6-cylinder engines, the oil

consumption may be no greater than 1.5

quarts per 10 hours of service. For 8-

cylinder engines, the oil consumption

may be no greater than 2.0 quarts per 10

hours of service. These criteria are

intended to ensure that the engine is

operating within the worse-case PM

level of 0.5 g/bhp-hr. In addition,

Nelson states that certification testing

demonstrated a PM removal of 0.16 g/

bhp-hr on an engine emitting at 0.30 g/

bhp-hr. Nelson states that it is

reasonable to assume that an even

greater mass of PM would be removed

from an engine operating at 0.50 g/bhphr. Even if this is not the case,

conservatively using a 0.16 g/bhp-hr of

PM removal on such an engine results

in a 32% reduction, which is still

greater than the 25% reduction to which

the equipment is certified. EPA believes

that Nelson’s response is adequate to

support certification for applicable nonrebuilt engines. In addition, Nelson

clarified that certification for use on

engines rebuilt with new DDC certified

rebuild kits is limited to instances

where the Nelson converter is installed

on the engine at the same time as the

DDC rebuild kit.

As discussed in the July 11, 1997

Federal Register notice requesting

public comment, EPA believes that the

Nelson test engine meets the criteria for

worse-case test engine, described at

§ 85.1406(a), for all two-stroke cycle

engines (exclusive of the 1990 model

year DDC 6L71TA), including both

mechanically and electronically fuel

injected engines. EPA reserves the right

to request additional information

showing that PM reduction does not

vary significantly among engine

families. However, because the Nelson

test data indicate over a 50 percent PM

reduction on the DDC 6V92TA MUI test

engine, EPA believes it reasonable to

expect that electronically-controlled

engines, with the Nelson catalyst

installed, will be capable of meeting the

25 percent reduction standard for which

Nelson is requesting certification. EPA

received no comments contrary to this

position, and thus approves certification

for both mechanically and electronically

fuel injected engines as shown in Table

A.

Finally, EPA notes that Nelson is

required to provide a 100,000 mile

emission defect warranty on the Nelson

converter, and a 150,000 mile emission

performance warranty per 40 CFR

85.1409. Use of the Nelson Converter on

an engine utilizing a DDC certified

upgrade kit does not in any way relieve

Nelson of the required warranty

responsibilities outlined above.

III. Certification

The Agency has reviewed this

notification, along with comments

received from interested parties, and

finds that the equipment described in

this notification of intent to certify:

(1) Reduces particulate matter exhaust

emissions by at least 25 percent,

without causing the applicable engine

families to exceed other exhaust

emissions standards;

(2) Will not cause an unreasonable

risk to the public health, welfare, or

safety;

(3) Will not result in any additional

range of parameter adjustability; and,

(4) Meets other requirements

necessary for certification under the

Retrofit/Rebuild Requirements for 1993

and Earlier Model Year Urban Buses (40

CFR Sections 85.1401 through 85.1415).

The Agency therefore certified this

equipment in a letter to Nelson dated

October 14, 1997, for use in the urban

bus retrofit/rebuild program as

discussed below in section IV.

IV. Transit Operator Requirements

Based on this certification, no new

requirements are placed on operators

and no operator will be required to

purchase this equipment. For the 1979

through 1989 6V92TA MUI engine

models, EPA has previously certified

equipment which triggered the

requirement to use equipment certified

to the 0.10 g/bhp-hr level beginning

September 15, 1997. Therefore, under

Program 1, operators who rebuild or

replace 1979 through 1989 model year

DDC 6V92TA MUI engines after this

date will be required to use equipment

certified to meet the 0.10 g/bhp-hr PM

level. For all other engine models to

which this certification applies, EPA

has previously certified equipment

which triggered the requirement to use

equipment certified as providing a

minimum 25 percent reduction in PM

beginning December 1, 1995. The

Nelson converter is certified to reduce

PM by at least 25 percent, and can be

used under program 1 to meet this

requirement for these other engine

models until such time that equipment

is certified to trigger the 0.10 g/bhp-hr

emission standard for these engines for

less than a life cycle cost of $7,940 (in

1992 dollars).

Operators who choose to comply with

Program 2 and install the Nelson

equipment, will use the specified PM

emission levels in Table A in their

calculation of fleet level attained.

Dated: November 19, 1997.

Robert Brenner,

Acting Assistant Administrator for Air and

Radiation.

[FR Doc. 97–31138 Filed 11–25–97; 8:45 am]

BILLING CODE 6560–50–P

ENVIRONMENTAL PROTECTION

AGENCY

[FRL–5927–8]

Request for Great Lakes Preproposals

Through ‘‘FY 98–99 Great Lakes

Priorities and Funding Guidance’’

AGENCY: Environmental Protection

Agency (EPA).

ACTION: Notice of funding availability.

SUMMARY: EPA’s Great Lakes National

Program Office (GLNPO) is now

requesting the submission of

preproposals for GLNPO funding. This

request is part of the FY98–99 Great

Lakes Priorities and Funding Guidance

(Funding Guidance). The Great Lakes

Funding Guidance identifies Great

Lakes priorities, solicits preproposals

for assistance projects, and describes

other Federal Great Lakes funding

opportunities.

DATES: The deadline for submission of

Preproposals is January 15, 1998.

ADDRESSES: Copies of the document are

available by calling Larry Brail at 312–

886–7474. It is also available through

the GLNPO Internet home page (http://

www.epa.gov/glnpo).

FOR FURTHER INFORMATION CONTACT:

Mike Russ, EPA–GLNPO, G–17J, 77

West Jackson Blvd., Chicago, IL 60604,

(312–886–4013/

russ.michael@epamail.epa.gov).

SUPPLEMENTARY INFORMATION: Under the

Great Lakes Funding Guidance,

Preproposals are requested for a total of

up to $3.7 million in funding targeted

to: Contaminated Sediments ($1.4

million), Pollution Prevention $700

thousand), Assessment/Indicators ($200

thousand), Habitat Protection and

Restoration ($1.1 million), and Exotic

Species ($300 thousand). A ‘‘roadmap’’

section describes some of the other

Great Lakes Federal funding available

through USEPA, the Natural Resources

Conservation Service, the Fish and

Wildlife Service, and the Army Corps of

Engineers.