Federal Register / Vol. 70, No. 161 / Monday, August 22, 2005 / Notices 48949

Name of firm OHA case no. Consent order tracking system (COTS) no. Principal 

Total .................................................................. ...................... .............................................................................. 1,585,576.76 

[FR Doc. 05–16555 Filed 8–19–05; 8:45 am] 

BILLING CODE 6450–01–P

ENVIRONMENTAL PROTECTION 

AGENCY 

[AD–FRL–7957–3; Docket No. OAR–2005–

0157] 

Conference on Air Quality Modeling

AGENCY: Environmental Protection 

Agency (EPA).

ACTION: Notice of conference.

SUMMARY: We announce the Eighth 

Conference on Air Quality Modeling. 

Such a conference is required by section 

three hundred twenty of the Clean Air 

Act (CAA) to be held every three years. 

The purposes of the Eighth Conference 

are to provide an overview of the latest 

features of the new air quality models 

and to provide a forum for public 

review and comment on potential 

revisions to the way the Agency 

determines and applies the appropriate 

air quality models in the future.

DATES: The eighth conference will be 

held on September 22, 2005 from 9 a.m. 

to 5:30 p.m. and on September 23, 2005 

from 8:30 a.m. to 5 p.m. Requests to 

speak at the conference should be 

submitted to the individual listed below 

by September 9, 2005. All written 

comments must be submitted by close of 

business October 24, 2005.

ADDRESSES: Conference: The conference 

will be held in the EPA Auditorium, 

Room C111, 109 T.W. Alexander Drive, 

Research Triangle Park, NC. 

Comments: Submit your comments, 

identified by Docket ID No. OAR–2005–

0157 by one of the following methods: 

Federal eRulemaking Portal: http://

www.regulations.gov. Follow the on-line 

instructions for submitting comments. 

Agency Web site: http://www.epa.gov/

edocket. EDOCKET, EPA’s electronic 

public docket and comment system, is 

EPA’s preferred method for receiving 

comments. Follow the on-line 

instructions for submitting comments. 

E-mail: http://www.epa.gov/edocket.

Fax: 202–566–1741. Mail: OAR Docket, 

Environmental Protection Agency, 

Mailcode: B102, 1200 Pennsylvania 

Ave., NW., Washington, DC 20460. 

Please include a total of 2 copies. Hand 

Delivery: EPA/DC, EPA West, Room 

B102, 1301 Constitution Ave., NW., 

Washington, DC. Such deliveries are 

only accepted during the Docket’s 

normal hours of operation, and special 

arrangements should be made for 

deliveries of boxed information. 

Instructions: Direct your comments to 

Docket ID No. OAR–2005–0157. EPA’s 

policy is that all comments received 

will be included in the public docket 

without change and may be made 

available online at http://www.epa.gov/

edocket, including any personal 

information provided, unless the 

comment includes information claimed 

to be Confidential Business Information 

(CBI) or other information whose 

disclosure is restricted by statute. Do 

not submit information that you 

consider to be CBI or otherwise 

protected through EDOCKET, 

regulations.gov, or e-mail. The EPA 

EDOCKET and the Federal 

regulations.gov Web sites are 

‘‘anonymous access’’ systems, which 

means EPA will not know your identity 

or contact information unless you 

provide it in the body of your comment. 

If you send an e-mail comment directly 

to EPA without going through 

EDOCKET or regulations.gov, your email address will be automatically 

captured and included as part of the 

comment that is placed in the public 

docket and made available on the 

Internet. If you submit an electronic 

comment, EPA recommends that you 

include your name and other contact 

information in the body of your 

comment and with any disk or CD–ROM 

you submit. If EPA cannot read your 

comment due to technical difficulties 

and cannot contact you for clarification, 

EPA may not be able to consider your 

comment. Electronic files should avoid 

the use of special characters, any form 

of encryption, and be free of any defects 

or viruses. For additional information 

about EPA’s public docket visit 

EDOCKET on-line or see the Federal 

Register of May 31, 2002 (67 FR 38102). 

For additional instructions on 

submitting comments, go to unit II of 

the SUPPLEMENTARY INFORMATION section 

of this document. Docket: All 

documents in the docket are listed in 

the EDOCKET index at http://

www.epa.gov/edocket. Although listed 

in the index, some information is not 

publicly available, i.e., CBI or other 

information whose disclosure is 

restricted by statute. Certain other 

material, such as copyrighted material, 

is not placed on the Internet and will be 

publicly available only in hard copy 

form. Publicly available docket 

materials are available either 

electronically in EDOCKET or in hard 

copy at the OAR Docket, EPA/DC, EPA 

West, Room B102, 1301 Constitution 

Ave., NW., Washington, DC. The Public 

Reading Room is open from 8:30 a.m. to 

4:30 p.m., Monday through Friday, 

excluding legal holidays. The telephone 

number for the Public Reading Room is 

(202) 566–1744, and the telephone 

number for the OAR Docket is (202) 

566–1742. 

Background information: Additional 

information and a more detailed agenda 

are electronically available at http://

www.epa.gov/scram001/

8thmodconf.htm.

FOR FURTHER INFORMATION CONTACT:

Warren Peters, U.S. Environmental 

Protection Agency, Mail Drop D243–01, 

T.W. Alexander Drive, Research 

Triangle Park, NC 27709; telephone: 

(919) 541–5337; e-mail address: 

peters.warren@epa.gov.

SUPPLEMENTARY INFORMATION: 

Background 

The Guideline on Air Quality Models

(hereafter, called the Guideline, which 

is found in Appendix W to 40 CFR part 

51), is used by EPA, States, and industry 

to prepare and review new source 

permits and State Implementation Plan 

revisions. The Guideline serves as a 

means by which consistency is 

maintained in air quality analyses. We 

originally published the Guideline in 

April 1978 and it was incorporated by 

reference in the regulations for the 

Prevention of Significant Deterioration 

(PSD) of Air Quality in June 1978. We 

revised the Guideline in 1986, and 

updated it with supplement A in 1987, 

supplement B in July 1993, and 

supplement C in August 1995. We 

published the Guideline as appendix W 

to 40 CFR part 51 when we issued 

supplement B. We republished the 

Guideline in August 1996 (61 FR 41838) 

to adopt the CFR system for labeling 

paragraphs.

To support the process of developing 

and revising the Guideline during the 

period 1977–1988, we held the First, 

Second and Third Conferences on Air 

Quality Modeling as required by Section 

320 of the Clean Air Act to help 

standardize modeling procedures. These 

modeling conferences provided us with 

comments on the Guideline and 

associated revisions, thereby helping us 

introduce improved modeling 

techniques into the regulatory process. 

48950 Federal Register / Vol. 70, No. 161 / Monday, August 22, 2005 / Notices 

1AMS/EPA Regulatory MODel; AERMOD is being 

developed by AERMIC: AMS/EPA Regulatory 

Model Improvement Committee.

2 IWAQM was formed in 1991 to provide a focus 

for development of technically sound regional air 

quality models for regulatory assessments of 

pollutant source impacts on federal Class I areas. 

IWAQM is an interagency collaboration that 

includes efforts by EPA, U.S. Forest Service, 

National Park Service, and Fish and Wildlife 

Service.

In October 1988, we held the Fourth 

Conference on Air Quality Modeling. Its 

purpose was to advise the public on 

new modeling techniques and to solicit 

comments to guide our consideration of 

any rulemaking needed to further revise 

the Guideline. We held the Fifth 

Conference on Air Quality Modeling in 

March 1991, which served as a public 

hearing for the proposed revisions to the 

Guideline. In August 1995, we held the 

sixth conference as a forum to update 

our available modeling tools with stateof-the-science techniques for airing 

these issues and for the public to offer 

new ideas. 

The last conference held was the 

Seventh Conference on Air Quality 

Modeling in June 28 and 29, 2000, 

which served as a public hearing for the 

proposed changes to the recommended 

air quality models in Appendix W. 

Several presentations were made, 

including the development of an 

enhanced Gaussian dispersion model 

with boundary layer parameterization 

(AERMOD 1); the development of the 

CALPUFF modeling system by Earth 

Tech, Inc. through the Interagency 

Workgroup on Air Quality Modeling 

(IWAQM 2); the development and 

testing of ISC-PRIME by the Electric 

Power Research Institute’s building 

downwash program; and on revisions to 

the Emissions and Dispersion Modeling 

System (EDMS) by the Federal Aviation 

Administration. In addition, several 

presentations on models for 

consideration as ‘‘alternative models’’

were made and a panel of experts 

discussed meteorological data 

assimilation for the next generation of 

dispersion models. The proceedings are 

found in Docket No. A–99–05.

Public Participation 

The Eighth Conference on Air Quality 

Modeling will be open to the public; no 

admission fee is charged and there is no 

formal registration. The conference will 

begin the first morning with 

introductory remarks by the presiding 

EPA official. The following topics will 

be presented:

I. AERMOD implementation issues; 

II. CALPUFF implementation issues; 

III. Assimilated meteorological data for 

air dispersion models; 

IV. New approach for updating 

(revising) models; 

V. Alternative approaches for selection 

of approved dispersion models; and, 

VI. Other presentations by the public.

Those wishing to speak at the 

conference, whether to volunteer a 

presentation on a special topic or to 

offer general comment on any of the 

modeling techniques scheduled for 

presentation, should contact us at the 

address given in the FURTHER

INFORMATION section (note the cutoff 

date). Such persons should identify the 

organization (if any) on whose behalf 

they are speaking and the length of 

presentation. If a presentation of general 

comments is projected to be longer than 

10 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 they 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 produced and 

placed in the docket. Speakers should 

bring extra copies of their presentation 

for inclusion in the docket and for the 

convenience of the reporter. 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 OAR Regulatory Docket 

(see ADDRESSES section). A transcript of 

the proceedings and a copy of all 

written comments will be maintained in 

Docket OAR–2005–0157 which will 

remain open until October 24, 2005 for 

the purpose of receiving additional 

comments.

Dated: August 17, 2005. 

Mary E. Henigin, 

Acting Director, Office of Air Quality Planning 

and Standards, Office of Air and Radiation.

[FR Doc. 05–16682 Filed 8–19–05; 8:45 am] 

BILLING CODE 6560–50–P

ENVIRONMENTAL PROTECTION 

AGENCY 

[FRL–7957–2; E–Docket ID No. ORD–2005–

0022] 

Approaches for the Application of 

Physiologically-Based 

Pharmacokinetic (PBPK) Models and 

Supporting Data in Risk Assessment

AGENCY: Environmental Protection 

Agency.

ACTION: Notice of extension of public 

comment period. 

SUMMARY: The U.S. Environmental 

Protection Agency (EPA) is extending 

the public comment period on the 

external review draft document titled, 

‘‘Approaches for the Application of 

Physiologically-Based Pharmacokinetic 

(PBPK) Models and Supporting Data in 

Risk Assessment’’ (EPA/600/R–05/

043A), by 45 days. On July 28, 2005, 

EPA published a Federal Register notice 

(70 FR 43692) announcing: (1) The 

public availability of the draft 

document; (2) the beginning of a 30-day 

public comment period; and (3) an 

anticipated external peer-review 

workshop. EPA is extending the public 

comment period to October 14, 2005, in 

response to requests for extension of the 

comment period. EPA intends to make 

comments received by the end of the 

extended public comment period 

(October 14, 2005) available to Versar, 

Inc., an EPA contractor for external 

scientific peer review, for the external 

peer review panelists prior to the 

anticipated workshop. The U.S. EPA 

will consider all comments received by 

October 14, 2005, in preparing a final 

report. 

EPA still expects Versar, Inc., to 

convene a panel of experts and organize 

and conduct an external peer-review 

workshop. This workshop will be 

announced in a separate Federal 

Register notice, once EPA is notified by 

Versar, Inc., of the date and location for 

the workshop. The public comment 

period and the external peer-review 

workshop are separate processes that 

will provide opportunities for all 

interested parties to comment on the 

document. In preparing a final report, 

EPA will consider any public comments 

that EPA receives in accordance with 

this notice.

DATES: The 45-day extension of the 

public comment period begins August 

30, 2005, and ends October 14, 2005. 

Technical comments should be in 

writing and must be received by EPA by 

close of business October 14, 2005.

ADDRESSES: The draft document and 

EPA’s peer-review charge are available 

primarily via the Internet on the 

National Center for Environmental 

Assessment’s home page under the 

Recent Additions and Publications 

menus at http://www.epa.gov/ncea. A 

limited number of paper copies are 

available from the Technical 

Information Staff, National Center for 

Environmental Assessment; telephone: 

(202) 564–3261; facsimile: (202) 565–

0050. If you are requesting a paper copy, 

please provide your name, mailing 

address, and the document title,