[Federal Register Volume 65, Number 160 (Thursday, August 17, 2000)]
[Page 50202]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 00-20970]




Air Quality Criteria for Carbon Monoxide (Final)

AGENCY: Environmental Protection Agency.

ACTION: Notice of availability of a final document.


SUMMARY: The U.S. Environmental Protection Agency (EPA), National 
Center for Environmental Assessment, is today announcing the 
availability of a final document, Air Quality Criteria for Carbon 
Monoxide, EPA 600/P-99/001F, dated June 2000. Required under sections 
108 and 109 of the Clean Air Act, the purpose of this document is to 
provide an assessment of the latest, relevant scientific information 
that may have an impact on the next periodic review of the National 
Ambient Air Quality Standards (NAAQS) for carbon monoxide (CO).

ADDRESSES: A limited number of copies of the Air Quality Criteria for 
Carbon Monoxide are available from the National Service Center for 
Environmental Publications. Request a copy by telephoning 1-800-490-
9198 or 513-489-8190 and providing the title and the EPA number for the 
document, EPA 600/P-99/001F. Internet users may obtain a copy from the 
EPA's National Center for Environmental Assessment (NCEA) home page. 
The URL is http://www.epa.gov/ncea/.

FOR FURTHER INFORMATION CONTACT: Mr. James Raub, National Center for 
Environmental Assessment-RTP Office (MD-52), U.S. Environmental 
Protection Agency, Research Triangle Park, NC 27711; telephone: 919-
541-4157; facsimile: 919-541-1818; E-mail: [email protected].

SUPPLEMENTARY INFORMATION: Sections 108 and 109 of the Clean Air Act 
(CAA) require that the EPA carry out a periodic review of the 
scientific information available for the ``criteria'' air pollutants 
such as carbon monoxide and revise, where appropriate, the National 
Ambient Air Quality Standards (NAAQS) for them. In keeping with these 
requirements of the CAA, the National Center for Environmental 
Assessment-RTP, within the Office of Research and Development, has 
proceeded with review and revision of the CO Air Quality Criteria 
Document (AQCD). The scientific information selected for assessment in 
the CO AQCD includes the more recent literature published since 
completion of the previous CO AQCD in 1990.
    As part of EPA's standard AQCD development process, a draft of the 
revised CO AQCD underwent peer review at a workshop conducted on 
September 17-18, 1998 (63 FR 47494, September 8, 1998). In addition, 
two subsequent external review drafts were released for public comment 
from March to May 1999 (64 FR 13198, March 17, 1999) and October to 
November 1999 (64 FR 55923, October 15, 1999). The Clean Air Scientific 
Advisory Committee (CASAC) reviewed the respective external review 
drafts on June 9, 1999 (64 FR 27784, May 21, 1999) and November 18, 
1999 (64 FR 57453, October 25, 1999). Final closure from CASAC was 
received on January 11, 2000. Revisions in response to the comments 
received have been incorporated into the final document.

    Dated: July 24, 2000.
William H. Farland,
Director, National Center for Environmental Assessment.
[FR Doc. 00-20970 Filed 8-16-00; 8:45 am]