UNITED STATES ENVIRONMENTAL PROTECTION AGENCY 

RESEARCH TRIANGLE PARK, NC 27711 

November 25, 2014 

MEMORANDUM 

OFFICE OF 

AIR QUALITY PLANNING 

AND STANDARDS 

SUBJECT: 

FROM: 

Posting EPA-HQ-OAR-2008-0699 to Regulations.gov for Public Access 

Susan L. Stone ~ Health and Environmental Impacts Division 

Thru: E~ika N. Sasser '1\ ;S, 

Director {/ "' 

Health and Environmental Impacts Division 

This memorandum authorizes the posting ofEPA-HQ-OAR-2008-0699 to 

Regulations.gov for public access. 

Background: This is a rulemaking docket for the review of the national ambient air 

quality standards for ozone, which will conclude in 2015. The public may comment on all 

aspects ofthe rulemaking, which are discussed as follows. Based on its review of the air 

quality criteria for ozone (03) and related photochemical oxidants and national ambient 

air quality standards (NAAQS) for 03, the EPA proposes to make revisions to the 

primary and secondary NAAQS for 03 to provide requisite protection of public health 

and welfare, respectively. The EPA is proposing to revise the primary standard to a level 

within the range of 0.065 to 0.070 parts per million (ppm), and to revise the secondary 

standard to within the range of 0.065 to 0.070 ppm, which air quality analyses indicate 

would provide air quality, in terms of3-year average W126 index values, at or below a 

range of 13-17 ppm-hours. The EPA proposes to make corresponding revisions in data 

handling conventions for 03 and conforming changes to the Air Quality Index (AQI); to 

revise regulations for the prevention of significant deterioration (PSD) program to add a 

transition provision for certain applications; and to propose schedules and convey 

information related to implementing any revised standards. The EPA is proposing 

changes to the 03 monitoring seasons, the Federal Reference Method (FRM) for 

monitoring 03 in the ambient air, Federal Equivalent Method (FEM) procedures for 

testing, and the Photochemical Assessment Monitoring Stations (P AMS) network. 

Along with proposing exceptional event schedules related to implementing any revised 

03 standards, the EPA is proposing to apply this same schedule approach to other future 

Internet Address (URL) • http://www.epa.gov 

Recycled/Recyclable • Printed w~h Vegetable Oil Based Inks on Recycled Paper (Minimum 25% Poslconsumer) 
revised NAAQS and to remove obsolete regulatory language for expired exceptional 

event deadlines. The EPA is proposing to make minor changes to the procedures and time 

periods for evaluating potential FRMs and equivalent methods (including making the 

requirements for nitrogen dioxide consistent with the requirements for 03) and to remove 

an obsolete requirement for the annual submission of docu!llentation by manufacturers of 

certain particulate matter monitors. 

This document will be open for public comment from 11/26/2014 to 90 days after 

publication in the Federal Register. 

Submit your comments, identified by Docket ID No. EPA-HQ-OAR-2008-0699, by one 

of the following methods: 

www.regulations.gov: Follow the on-line instructions for submitting 

comments. 

Email: A-and-R-Docket@epa.gov 

• Fax: (202) 566-9744 

Mail: Attention: Docket ID No. EPA-HQ-OAR-2008-0699, 

Environmental Protection Agency, EPA Docket Center (EPA/DC), 

Mailcode 28221 T, 1200 Pennsylvania Ave, NW, Washington, DC 20460. 

• Hand Delivery: EPA Docket Center, Room 3334, EPA WJC West 

Building, 1301 Constitution Avenue, NW, Washington, DC 20004. Such 

deliveries are only accepted during the Docket's normal hours of operation, 

and special arrangements should be made for deliveries of boxed 

information. 

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, avoid 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. 
Should you have any questions regarding this memorandum, please contact Susan Stone 

at (919) 541-1146, or via email at stone.susan@epa.gov.