45802 Federal Register / Vol. 62, No. 168 / Friday, August 29, 1997 / Notices

DEPARTMENT OF ENERGY

Federal Energy Regulatory

Commission

[Docket No. EG97–77–000]

Zond Windsystem Partners, Ltd.,

Series 85–A, a California Limited

Partnership; Notice of Amendment to

Application for Determination of

Exempt Wholesale Generator Status

August 26, 1997.

On August 25, 1997, Zond

Windsystem Partners, Ltd., Series 85–A,

a California Limited Partnership, 13000

Jameson Road, Tehachapi, California

93561, filed with the Federal Energy

Regulatory Commission an amendment

to its application.

Any person desiring to be heard

concerning the application for exempt

wholesale generator status should file a

motion to intervene or comments with

the Federal Energy Regulatory

Commission, 888 First Street, NE,

Washington, DC 20426, in accordance

with Sections 385.211 and 385.214 of

the Commission’s Rules of Practice and

Procedure. The Commission will limit

its consideration of comments to those

that concern the adequacy or accuracy

of the application. All such motions and

comments should be filed on or before

September 8, 1997 and must be served

on applicant. Any person wishing to

become a party must file a motion to

intervene. Copies of this filing are on

file with the Commission and are

available for public inspection.

Lois D. Cashell,

Secretary.

[FR Doc. 97–23036 Filed 8–28–97; 8:45 am]

BILLING CODE 6717–01–M

ENVIRONMENTAL PROTECTION

AGENCY

[FRL–5885–5]

Air Pollution Control; Motor Vehicle

Emission Factors

AGENCY: Environmental Protection

Agency (EPA).

ACTION: Notice of public workshop.

SUMMARY: The Environmental Protection

Agency is now in the process of

developing revisions and improvements

to the highway vehicle emission factor

model (the MOBILE model). The current

version of the model, MOBILE5a, was

released for use March 26, 1993. The

next version of the model, MOBILE6, is

tentatively planned for completion early

in 1998 and release for use in the

summer of 1998. This notice announces

the second public workshop for the

purpose of discussing issues raised by

the pending revisions to the model. At

this workshop, EPA will present results

of analyses that have been completed to

date, raise new issues for discussion and

comment, and generally provide an

update as to the progress that has been

made since the first MOBILE6 workshop

held in March, 1997. There is likely to

be one additional MOBILE6 workshop,

probably in the spring of 1998. As at the

March 1997 workshop, this workshop

will also include a presentation on

EPA’s progress in the development of a

nonroad mobile source emissions

inventory model.

DATES: The workshop will be held

Wednesday, October 1 and Thursday,

October 2, 1997. The times are from 8:30

am to 4:30 pm October 1, and 8:30 am

to 5 pm October 2. All times are Eastern

Daylight Time (EDT).

ADDRESSES: The workshop will be held

in Powsley Auditorium of the Morris

Lawrence Building, Washtenaw

Community College, 400 East Huron

River Drive, Ann Arbor, MI 48106.

Directions to the workshop can be

requested from the contact person listed

below, or through accessing the OMS

World Wide Web (WWW) site

(www.epa.gov/omswww/). Information

on how to electronically access this and

other workshop-related information

appears below.

FOR FURTHER INFORMATION CONTACT: Ms.

Betty Measley, U. S. EPA Office of

Mobile Sources, Assessment and

Modeling Division, Emission Inventory

Group, 2565 Plymouth Road, Ann Arbor

MI 48105. Telephone: (313) 741–7902;

fax (313) 741–7939.

This notice, as well as related

information concerning the workshop,

may be found in the OMS section of the

EPA Web site. To access this

information using the WWW:

http://www.epa.gov/OMSWWW/

models.htm

gopher: gopher.epa.gov menus-

>Offices: Air: OMS

ftp: ftp.epa.gov Chg Dir->pub/gopher/

OMS

Workshop-related files, including a

copy of this notice, a map showing the

location of WCC and the Morris

Lawrence Building, and later additional

information as described in the body of

this announcement, will be found at the

OMS Section, Models & Utilities

Subsection.

SUPPLEMENTARY INFORMATION: Under

section 130 of the Clean Air Act

Amendments of 1990, EPA is required

to review, and to revise as necessary, the

emission factors used to estimate

emissions of volatile organic

compounds (VOC), carbon monoxide

(CO), and oxides of nitrogen (NO X) from

area and mobile sources. In the case of

highway vehicles, emission factors for

these pollutants as a function of various

parameters are estimated using the

highway vehicle emission factor model,

commonly referred to as MOBILE. This

model, first developed in the late 1970s,

has been revised, updated, and

improved periodically since that time to

account for increasing data and analyses

concerning in-use emissions

performance of highway vehicles,

changes in vehicle and emission control

technology, changes in fuel

composition, strengthening of

applicable emission standards,

refinements to applicable test

procedures, and other items that affect

in-use emission levels.

Section 130 of the Act requires that

this emission factor review, and revision

as needed, be performed at least every

three years. As noted above, the current

official version of the model,

MOBILE5a, was released in March 1993.

Since that time, two interim updates to

the model have been developed,

MOBILE5alH (released in November

1995) and MOBILE5b (released in

October 1996). While not involving

revision and update to the entire model,

these versions were developed to

address specific needs on the part of

emission factor users. MOBILE5alH

incorporated a number of changes

intended to improve the ability of

modelers, particularly States and local/

regional governments, in estimating the

benefits of various innovative

inspection and maintenance (I/M)

programs and to improve the accuracy

of modeling situations in which such

programs change over time or different

programs are applied to different

subsets of the covered fleet. MOBILE5b

greatly simplified the use of the features

first provided in MOBILE5alH, and

included a number of other minor

changes, corrections, and

improvements.

The time elapsed since the last

complete revision to the model and the

additional test data and analyses

available since that time warrant

another thorough update and revision to

the model. OMS plans significant

changes not only to the underlying

emission factor estimates, but to how

emission factors are modeled to account

for things such as separation of start and

running exhaust emissions, roadway

facility type, average traffic speeds, and

a number of other important changes

that will affect the input information

required to use the model as well as the

type of information produced by the