7694Fea R V 5 . M

(PSD) permit issued to Mecklenburg

Cogeneration Limited Partnership, Inc.

for the construction of a 240 megawatt

cogeneration plant in Mecklenburg

County, Virginia. The facility will be

comprised of four pulverized coal-fired

boilers capable of generating electricity

for Virginia Power, an electric utility

company, and steam for Burlington

Industries, a textile manufacturer. The

permit was issued by the Virginia

Department of Air Pollution Control

(DAPC) on May 18,1990, pursuant to a

delegation of authority from the U.S.

Environmental Protection Agency,

Region III, Philadelphia, Pennsylvania.

Because of the Delegation, any permit

issued by the DAPC is an EPA-issued

permit for purposes of federal law. 40

CFR 124.41; 45 FR 33413 (May 19, 1980).

PSD permits issued by the DAPC are

subject to the review provisions of the

applicable EPA regulations, 40 CFR

124.19 (1989).

The Administrator issued an Order

Denying Review in the above case on

December 21, 1990 concluding that

review of DAPC's permit determination

was not warranted and that it met all

necessary requirements of federal law.

Anyone wishing to review the final

permit, petition, final order, or related

materials should contact the following

offices:

U.S. EPA, Region Ill, Air Enforcement

Branch, New Source Review Section

(3AT22), 841 Chestnut Building,

Philadelphia, Pennsylvania 19107

Virginia Dept. of Air Pollution Control,

Room 801, Ninth Street Office

Building, Richmond, Virginia 23219.

Pursuant to 40 CFR 124.19(f)(2), for

purposes of judicial review, notice is

today being publibhed in the Federal

Register of this final Agency action. If

available pursuant to the Consolidated

Permit Regulations (40 CFR 124), judicial

review of these determinations under

section 307(b)(1) of the Clean Air Act

may be sought only by the filing of a

petition for review in the United States

Court of Appeals for the appropriate

circuit with 60 days from the date on

which this determination is published in

the Federal Register. Under section

307(b)(2) of the Act, this determination

shall not be subject to later judicial

review in any civil or criminal

proceedings for enforcement.

Dated: February 8,1991.

Edwin B. Erickson,

Regional Administrotor.

[FR Doc. 91-4366 Filed 2-22-91; 8:45 am]

GILUNG CODE 6560-50

[AD-FRL-3905-3 Docket No. A-88-041

Conference on Air Quality Modeling

AGENCY:. Environmental Protection

Agency (EPA).

ACTION: Notice of conference.

SUMMARY: EPA announces the Fifth

Conference on Air Quality Modeling.

Such a conference is required by section

320 of the Clean Air Act (CAA) to be

held every 3 years. The purpose of the

fifth conference is to provide a forum for

public review and comment on proposed

revisions to the "Guideline on Air

Quality Models (Revised)", EPA-450/2-

78-027R (1986), and Supplement A (1987)

(hereinafter, the "Guideline"). Such

revisions are based on analyses of

comments received at the Fourth

Conference on Air Quality Modeling,

held October 1988, and are proposed as

Supplement B to te Guideline.

DATES: The fifth conference will be held

on March 19, 1991 from 9 a.m. to 5 p.m.

As needed to allow for presentation of

all verbal comments, the conference

may extend to noon of the next day.

Requests to speak at the conference

should be submitted to the individuals

listed below by March 12, 1991. All

written comments must be submitted by

May 6, 1991.

ADDRESSES: Conference: The conference

will be held in the GSA Auditorium,

GSA National Capitol Region Building,

7th and D Streets, SW., Washington, DC.

Comments: Written statements or

comments not presented at the

conference should be submitted (in

duplicate if possible) to: Air Docket (LE131), Room M-1500, Waterside Mall,

Attention: Docket A-88-04, U.S.

Environmental Protection Agency, 401 M

Street SW., Washington, DC 20460.

Copies of Supplement B (draft) to the

Guideline may be obtained by writing or

calling Joseph A. Tikvart, Source

Receptor Analysis Branch, MD-14, U.S.

Environmental Protection Agency,

Research Triangle Park, NC 27711,

phone (919) 541-5561. Supplement B

(draft) is also available to registered

users of the Support Center for

Regulatory Air Models Bulletin Board

System by downloading the appropriate

file. To register or access this electronic

bulletin board, users with a personal

computer should dial (919) 541-5742.

Docket: Items referenced in this notice

as well as comments received are

maintained at Docket A-88--04. The

docket is available for public inspection

and copying between 8 a.m. and 4 p.m.,

Monday through Friday, at the address

above. A reasonable fee may be charged

for copying.

FOR FURTHER INFORMATION CONTACT.

Joseph A. Tikvart. Chief, Source

Receptor Analysis Branch (MD-14),

Office of Air Quality Planning and

Standards, U.S. Environmental

Protection Agency, Research Triangle

Park, NC 27711; telephone (919) 541-5562

or C. Thomas Coulter, telephone (919)

541-0832.

SUPPLEMENTARY INFORMATION:.

Background

The Guideline is used by EPA, States,

and private industry in the review and

preparation of new source permits and

SIP revisions. The Guideline serves as a

means by which consistency is

maintained in air quality analyses. It

was first incorporated in the Code of

Federal Regulations in 1978 and was

subsequently revised in 1986 to include

knowledge concerning medeling

analyses that developed since the

original guidance was issued. In 1988

four techniques were added as

Supplement A to the Guideline as a

result of public comments on the 1986

revisions.

To support the process of developing

and revising the Guideline during the

period 1977-1988, the First, Second and

Third Conferences on Air Quality

Modeling were held as required by

section 320 of the Clean Air Act to help

standardize modeling procedures. These

modeling conferences provided EPA

with comments on the Guideline and

associated revisions, thereby facilitating

introduction of improved modeling

techniques into the regulatory process.

In October 1988, the Fourth

Conference on Air Quality Modeling

was held. Its purpose was to advise the

public on new modeling techniques and

to solicit comments to guide EPA's

consideration of any rulemaking needed

to further revise the Guideline. The new

models provide techniques for situations

where specific procedures had not

previously been available, and also

improve several previously adopted

techniques. These new techniques and

the guidance discussed at the modeling

conference are:

Complex Terrain Dispersion Model,

Ozone precursor point source modeling,

Mobile source modeling at signalized

intersections,

Emissions and dispersion modeling

system for airports,

Long-range transport models,

Models for estimating visibility impact

of specific sources,

Model for shoreline dispersion,

Valley stagnation,

On-site meteorological program

guidance,

76fl4 Federal Register / Vol. 66, No. 37 / Monday, February 25, 1991 / Notices
Federal Register / Vol. 56, No. 37 1 Monday, February 25, 1991 / Notices

Method for evaluating models,

General screening techniques,

Regional scale models,

Modeling techniques for air pathway

analyses.

In general, EPA solicited comments on

(1) whether the techniques are sound, (2]

whether they should be adopted for

regulatory application, and (3) whether

limitations on use, Including data base

requirements, should be specified.

All comments presented at the fourth

modeling conference and/or submitted

to Docket A-88-04 are encompassed in

Docket Items H-D, II-E, and 1-G. Also,

a verbatim transcript of the conference

proceedings is available as Docket Item

1I-G-3a and b. EPA has summarized

these comments, developed responses,

and drawn conclusions on appropriate

actions in the document "Summary of

Public Comments and EPA Responses

on the Fourth Conference on Air Quality

Modeling--October 1988" (Docket Item

1-0-1).

The following are being proposed as

models or analysis procedures

recommended for inclusion in the

Guideline: Complex Terrain Dispersion

Model (refined model, accompanied by

CTSCREEN and modifications in the use

of other screening models); CAL3QHC

(carbon monoxide estimates at

signalized intersections); modeling for

air pathway analysis of toxic/hazardous

pollutants (consistent multimedia use of

ISC and other models); EDMS (modeling

system for airports); on-site

meteorological program guidance

(expansion of current guidance); general

screening techniques and VISCREEN

(updates and computerization of current

screening techniques); method for

evaluating models (enhancement of

current guidance). For the most part,

these models and analysis procedures

are designed for operation on or to be

compatible with a personal computer.

The following are being proposed for

addition to Appendix B of the Guideline

with an indication that they are

available for application in the unique

circumstances to which they apply on a

case-by-case basis: Shoreline Dispersion

Model (sea/lake breeze fumigation) and

WYND valley (valley stagnation). Two

models falling in a similar category that

are already in Appendix B are:

MESOPUFF-II (long-range transport)

and PLUVUE-lI (visibility).

Besides adding new techniques, EPA

is also proposing to clarify and update

portions of the Guideline to make it

consistent with current regulatory

programs that have been established

through other Agency activities.

These models and other changes will

be adopted in Supplement B (Draft) to

the Guideline (Docket Item III-B-1); see

the "ADDRESSES" section of this Notice

for general availability. Of the

techniques considered at the fourth

modeling conference, only two are not

being proposed for further action at this

time; they are point source modeling for

ozone precursors and regional scale

models.

This conference is serving jointly as a

public hearing on proposed amendments

to EPA regulations which appear at 40

CFR 51.166 and 52.21. The amendments

relate to using air quality models and

adding by reference Supplement B to the

revised modeling guideline. EPA has

previously issued a notice (see 56 FR

5900-5907, February 13, 1991), on a

Public hearing concerning these

amendments.

Public Participation

The Fifth Conference on Air Quality

Modeling will be open to the public, no

admission fee is charged. The

Conference will begin in the morning

with briefings by EPA officials on

Supplement B concerning proposed

changes and additions to the Guideline.

Emphasis will be on complex terrain

dispersion models, mobile source

modeling at signalized intersections, and

stability classification schemes used in

on-site meteorological data programs.

The conference will continue with

statements from representatives of the

Air and Waste Management

Association. In the afternoon, invited

statements will be provided by the

National Academy of Sciences,

representatives of State and local air

pollution control agencies, and

appropriate Federal agencies including

the National Science Foundation, the

National Oceanic and Atmospheric

Administration, the National Institute of

Standards and Technology (formerly,

the National Bureau of Standards), and

others. The conference will then be

opened to statements and comments

from the general public.

EPA solicits advice and comments

especially on: (1) Proposed changes to 40

CFR 51.166 and 52.21; (2) the technical

content of Supplement B and its

adoption for regulatory application; (3)

limitations on use, including data base

requirements, that should be specified

for the techniques proposed in

Supplement B; and (4) proposed changes

to other sections of 40 CFR 51 to give

status to long standing EPA policy

regarding the use of air quality models

in several regulatory programs (e.g.,

51.46, 51.112, 51.117, 51.150, 51.1601.

Persons wishing to speak at the

conference should contact EPA at the

address given in the "FtHMER

INFORMATION" section no later than

March 12. Such persons should identify

the organization (if any) on whose

behalf they are speaking and the length

of presentation. If a presentation is

projected to be longer than 15 minutes,

the presenter should also state why a

longer period is needed. Persons failing

to submit a written notice but desiring to

speak at the conference should notify

the presiding officer immediately before

the conference and will be scheduled on

a time-available basis.

The conference will be conducted

informally and chaired by an EPA

official. There will be no sworn

testimony or cross examination. A

verbatim transcript of the conference

proceedings will be made and placed in

the docket. Speakers should bring extra

copies of their presentation for inclusion

in the docket, for the convenience of the

reporter and the Agency panel. Speakers

will be permitted to enter into the record

any additional written comments that

are not presented orally. Additional

written statements or comments should

be sent to the Central Docket Section

(see ADDRESSES section). A transcript of

the proceedings and a copy of all

written comments will be maintained in

Docket A-88-04 which will remain open

until May 6, 1991 for the purpose of

receiving additional comments.

Dated: February 19, 1991.

Michael Shapiro,

Acting Assistant Administrator for Ai and

Radiation.

[FR Doc. 91-4369 Filed 2-22-21; 8:45 am]

SLUNG COOE 650-5-U

[FRL 3908-1]

Clean Water Act Reauthorization;

Harnessing Market Forces and

Alternative Financing Mechanisms

AGENCY. Environmental Protection

Agency.

ACTION: Notice of a meeting to gather

information on the use of market forces

and alternative financing to support

programs mandated by the Clean Water

Act (CWA).

SUMMARY: As part of an on-going effort

to gather information that could be used

in the reauthorization of CWA, EPA is

conducting a series of symposia on

major cross-cutting issues. The first

meeting of the series is scheduled for

February 23-24 to discuss the issue of

risk and to identify and rank the

remaining areas of significant risks to

water resources.

The subject meeting, which is the

second in the series, will address the

feasibility of using market forces and

7695