# Availability of Additional Information Related to the Review of the National Ambient Air Quality Standards for Ozone
**AGENCY:**
Environmental Protection Agency (EPA).
**ACTION:**
Notice of data availability.
**SUMMARY:**
The EPA is providing notice that it has placed in the docket for the review of the national ambient air quality standards (NAAQS) for ozone (O *3* ) (Docket No. EPA-HQ-OAR-2005-0172) additional information relevant to the rulemaking proposing revisions to those standards. See 72 FR 37818, July 11, 2007. Specifically, this notice announces the availability of a memorandum from Abt Associates, Inc. dated November 27, 2007. The subject of the memo is: “Additional Tables: Non-Accidental Mortality and Lung Function Responses Associated with O *3* Concentrations that Just Meet the Current and Alternative 8-Hour Daily Maximum Standards—Totals and Portions Attributable to O *3* Within 0.1 ppm Ranges, Based on 2002 and 2004 Air Quality Data.” The docket number for this memo is EPA-HQ-OAR-2005-0172-6942.
**DATES:**
The memorandum was placed in the Ozone NAAQS docket on December 17, 2007.
**FOR FURTHER INFORMATION CONTACT:**
Mr. Harvey Richmond, Office of Air Quality Planning and Standards (C-504-06), U.S. Environmental Protection Agency, Research Triangle Park, NC 27711: *telephone:* 919-541-5271; *e-mail: [email protected].*
**SUPPLEMENTARY INFORMATION:**
**A. Background**
On July 11, 2007, EPA published a proposed rule to make revisions to the primary and secondary NAAQS for ozone to provide requisite protection of public health and welfare (72 FR 37818). A Technical Support Document (TSD) was completed in July 2007 by Abt Associates, Inc. entitled “Ozone Health Risk Assessment for Selected Urban Areas.” This TSD is docket item EPA-HQ-OAR-2005-0172-6794. Since completion of the TSD, Abt Associates, Inc. has prepared an additional analysis to show the non-accidental mortality and lung function risk associated with each 0.01 ppm O *3* concentration or exposure interval for air quality simulating just meeting the current and several alternative standards based on 2002 and 2004 air quality data. The total O *3* -related risk for non-accidental mortality and specific lung function responses are also presented in the tables in this memo and are the same as reported in the July 2007 TSD.
**B. How Can I Get a Copy of This Document?**
1. *Docket.* EPA has established a docket for this action under Docket ID No. EPA-HQ-OAR-2005-0172. The document entitled “Additional Tables: Non-Accidental Mortality and Lung Function Responses Associated with O *3* Concentrations that Just Meet the Current and Alternative 8-Hour Daily Maximum Standards—Totals and Portions Attributable to O *3* Within 0.1 ppm Ranges, Based on 2002 and 2004 Air Quality Data” has been placed in this docket as docket item EPA-HQ-OAR-2005-0172-6942. Publicly available docket materials are available either electronically through *http://www.regulations.gov* or in hard copy at the Air and Radiation Docket and Information Center, EPA/DC, Room 3334, 1301 Constitution Ave., NW., Washington, DC. The EPA Docket Center 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 Air and Radiation.
**List of Subjects in 40 CFR Part 50**
Environmental protection, Air pollution control, Carbon monoxide, Lead, Nitrogen dioxide, Ozone, Particulate matter, Sulfur oxides.
Dated: December 21, 2007.
Peter Tsirigotis,
Acting Director, Office of Air Quality Planning and Standards.