55508 Federal Register / Vol. 73, No. 187 / Thursday, September 25, 2008 / Notices 

information, processing and 

maintaining information, and disclosing 

and providing information; adjusting 

the existing ways to comply with any 

previously applicable instructions and 

requirements which have subsequently 

changed; train personnel to be able to 

respond to a collection of information; 

search data sources; complete and 

review the collection of information; 

and transmit or otherwise disclose the 

information. 

Respondents/Affected Entities: 

Metallic mineral processing plants. 

Estimated Number of Respondents: 

20. 

Frequency of Response: Initially, 

occasionally, and semiannually. 

Estimated Total Annual Hour Burden: 

2,306. 

Estimated Total Annual Cost: 

$199,140, which is comprised of 

$13,000 in O&M costs, $186,140 in labor 

costs, and no annualized capital/startup costs. 

Changes in the Estimates: There is no 

change in the total estimated burden 

currently identified in the OMB 

Inventory of Approved ICR Burdens. 

Dated: September 22, 2008. 

Sara Hisel-McCoy, 

Director, Collection Strategies Division. 

[FR Doc. E8–22541 Filed 9–24–08; 8:45 am] 

BILLING CODE 6560–50–P 

ENVIRONMENTAL PROTECTION 

AGENCY 

[EPA–HQ–OAR–2008–0604; FRL–8720–9] 

Conference on Air Quality Modeling 

AGENCY: Environmental Protection 

Agency (EPA). 

ACTION: Notice of conference. 

SUMMARY: We announce the Ninth 

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 purposes 

of the ninth 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:

Comments: Comments on potential 

revisions to the way the Agency 

determines and applies the appropriate 

air quality models must be received on 

or before November 10, 2008. 

Conference: The conference will be 

held on October 9, 2008 from 8:30 a.m. 

to 5:30 p.m. and on October 10, 2008 

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

speak at the conference should be 

submitted to the individual listed below 

by October 3, 2008. 

ADDRESSES: 

Comments: Submit your comments, 

identified by Docket ID No. EPA–HQ– 

OAR–2008–0604 by one of the following 

methods: 

• http://www.regulations.gov: Follow 

the on-line instructions for submitting 

comments. This is EPA’s preferred 

method for receiving comments. 

• E-mail: Comments may be sent by 

electronic mail (e-mail) to a-and-rdocket@epa.gov, Attention Docket ID 

No. EPA–HQ–OAR–2008–0604. 

• Fax: Fax your comments to 202– 

566–9744, Attention Docket ID No. 

EPA–HQ–OAR–2008–0604. 

• Mail: Send your comments to: Air 

and Radiation Docket and Information 

Center, Environmental Protection 

Agency, Mailcode: 2822T, 1200 

Pennsylvania Ave., NW., Washington, 

DC 20460, Attention Docket ID No. 

EPA–HQ–OAR–2008–0604. 

• Hand Delivery or Courier: Deliver 

your comments to EPA Docket Center, 

1301 Constitution Ave., NW., Room 

3334, 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. EPA–HQ–OAR–2008– 

0604. 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.regulations.gov, 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 http:// 

www.regulations.gov or e-mail. The 

http://www.regulations.gov Web site is 

an ‘‘anonymous access’’ system, 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 http:// 

www.regulations.gov, your e-mail 

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 the EPA 

Docket Center homepage at http:// 

www.epa.gov/epahome/dockets.htm. 

Docket: All documents in the docket 

are listed in the http:// 

www.regulations.gov index. Although 

listed in the index, some information is 

not publicly available, e.g., CBI or other 

information whose disclosure is 

restricted by statute. Certain other 

material, such as copyrighted material, 

will be publicly available only in hard 

copy form. Publicly available docket 

materials are available either 

electronically in http:// 

www.regulations.gov or in hard copy at 

the Air Docket in the EPA Docket 

Center, EPA West, Room 3334, 1301 

Constitution Ave., NW., Washington, 

DC. This Docket Facility is open from 

8:30 a.m. to 4:30 p.m., Monday through 

Friday, excluding legal holidays. The 

Docket telephone number is (202) 566– 

1742; fax (202) 566–9744. 

Background Information: Additional 

information and a more detailed agenda 

are electronically available at http:// 

www.epa.gov/ttn/scram/ 

9thmodconf.htm. 

Conference: The conference will be 

held in the EPA Auditorium, Room 

C111, 109 T.W. Alexander Drive, 

Research Triangle Park, NC. 

FOR FURTHER INFORMATION CONTACT: 

Peter Eckhoff, U.S. Environmental 

Protection Agency, Office of Air Quality 

Planning and Standards, Air Quality 

Assessment Division, Mail Code C439– 

01, Research Triangle Park, NC 27711; 

telephone: (919) 541–5385; fax: (919) 

541–0044; e-mail address: 

eckhoff.peter@epa.gov. 

SUPPLEMENTARY INFORMATION: 

I. General Information 

A. What Should I Consider as I Prepare 

My Comments for EPA? 

1. Submitting CBI. Do not submit this 

information to EPA through http:// 

www.regulations.gov or e-mail. Clearly 

mark the part or all of the information 

that you claim to be CBI. For CBI 

information in a disk or CD ROM that 

you mail to EPA, mark the outside of the 

disk or CD ROM as CBI and then 

identify electronically within the disk or 

CD ROM the specific information that is 

claimed as CBI. In addition to one 

complete version of the comment that 

includes information claimed as CBI, a 

mstockstill on PROD1PC66 with NOTICES

Federal Register / Vol. 73, No. 187 / Thursday, September 25, 2008 / Notices 55509 

1AMS/EPA Regulatory MODel; AERMOD was 

developed by AERMIC: AMS/EPA Regulatory 

Model Improvement Committee. 

copy of the comment that does not 

contain the information claimed as CBI 

must be submitted for inclusion in the 

public docket. Information so marked 

will not be disclosed except in 

accordance with procedures set forth in 

40 CFR part 2. 

2. Tips for Preparing Your Comments. 

When submitting comments, remember 

to: 

• Identify the rulemaking by docket 

number and other identifying 

information (subject heading, Federal 

Register date and page number). 

• Follow directions—The agency may 

ask you to respond to specific questions 

or organize comments by referencing a 

Code of Federal Regulations (CFR) part 

or section number. 

• Explain why you agree or disagree; 

suggest alternatives and substitute 

language for your requested changes. 

• Describe any assumptions and 

provide any technical information and/ 

or data that you used. 

• If you estimate potential costs or 

burdens, explain how you arrived at 

your estimate in sufficient detail to 

allow for it to be reproduced. 

• Provide specific examples to 

illustrate your concerns, and suggest 

alternatives. 

• Explain your views as clearly as 

possible, avoiding the use of profanity 

or personal threats. 

• Make sure to submit your 

comments by the comment period 

deadline identified. 

II. 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. 

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 Seventh Conference was 

held in June 2000 and served as a public 

hearing for the proposed changes to the 

recommended air quality models in 

Appendix W including the CALPUFF 

modeling system and AERMOD.1

The last conference held was the 

Eighth Conference on Air Quality 

Modeling in September 22 and 23, 2005, 

which provided details on recent and 

impending changes to the recommended 

air quality models in Appendix W. 

Several presentations were made, 

including regulatory status and details 

on the AERMOD modeling system, the 

EPA’s preferred model for near-field 

regulatory applications; the regulatory 

status and implementation issues with 

the CALPUFF modeling system, the 

EPA’s preferred model for long-range 

transport of criteria pollutants and their 

impacts on Federal Class I areas; and on 

EPA’s approach to updating the 

approved versions of regulatory models 

under Appendix W to address coding 

bugs or implementation issues. In 

addition, several presentations were 

provided on the current and available 

methods for model performance 

evaluation and a panel of experts 

discussed the use of state-of-the-science 

prognostic meteorological data for our 

new dispersion models. The 

proceedings are found in Docket No. 

OAR–2005–0157. 

III. Public Participation 

The Ninth 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. Overview of Appendix W 

II. AERMOD Status and Updates 

III. CALPUFF Status and Updates 

IV. Non-Guideline Applications of 

Dispersion Models 

V. Update on Use of Assimilated 

Meteorological Data for Dispersion 

Models 

VI. Review of Current and Available Model 

Evaluation Methods 

VII. Review of New and Emerging Models/ 

Techniques for Future Consideration 

Under Appendix W; and 

VII. 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 FOR FURTHER

INFORMATION CONTACT section (note the 

cutoff date). Such persons should 

identify the organization (if any) on 

whose behalf they are speaking and the 

length of the 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 recorder. Speakers 

will also be permitted to enter written 

comments into the record. 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 ID No. EPA–HQ–OAR–2008– 

0604 which will remain open until 

November 10, 2008 for the purpose of 

receiving additional comments. 

Dated: September 18, 2008. 

Jennifer Edmonds, 

Acting Director, Office of Air Quality Planning 

and Standards. 

[FR Doc. E8–22537 Filed 9–24–08; 8:45 am] 

BILLING CODE 6560–50–P 

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