[Federal Register Volume 69, Number 209 (Friday, October 29, 2004)]
[Proposed Rules]
[Pages 63111-63112]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 04-24232]



40 CFR Part 50


Air Quality Criteria for Particulate Matter

AGENCY: Environmental Protection Agency.

ACTION: Notice of Availability of Final Document.


SUMMARY: This notice announces the availability of a final document, 
Air Quality Criteria for Particulate Matter (EPA/600/P-99/002aF, EPA/
600/P-99/002bF) that was prepared by the U.S. Environmental Protection 
Agency's (EPA) National Center for Environmental Assessment (NCEA) of 
the Office of Research and Development (ORD).

DATES: This document will be available the week of October 25, 2004.

ADDRESSES: The document will be made available electronically through 
the NCEA Web site (http://www.epa.gov/ncea/publications). A limited 
number of paper or CD-ROM copies will be available from the EPA's 
National Service Center for Environmental Publications (NSCEP), P.O. 
Box 42419, Cincinnati, OH 45242; telephone: 1 (800) 490-9198 or (513) 
489-8190; facsimile: (513) 489-8695. Please provide your name, your 
mailing address, the title and the EPA number of the requested 

FOR FURTHER INFORMATION CONTACT: For questions on availability of the 
document, contact Diane Ray, NCEA, telephone: (919) 541-3789, fax: 
(919) 541-1818, or email [email protected]. For technical information, 
contact Robert Elias, Ph.D., NCEA, fax: (919) 541-1818 or email: 
[email protected].

SUPPLEMENTARY INFORMATION: Section 108 (a) of the Clean Air Act directs 
the Administrator to identify certain pollutants which ``may reasonably 
be anticipated to endanger public health and welfare'' and to issue air 
quality criteria for them. These air quality criteria are to 
``accurately reflect the latest scientific knowledge useful in 
indicating the kind and extent of all identifiable effects on public 
health or welfare which may be expected from the presence of [a] 
pollutant in the ambient air. * * *'' EPA is then to establish National 
Ambient Air Quality Standards (NAAQS) for each pollutant for which EPA 
has issued criteria. Section 109 (d) of the Act requires ``thorough'' 
periodic review and, if appropriate, revision of

[[Page 63112]]

existing air quality criteria to reflect the latest scientific data on 
all identifiable effects on public health and welfare of the pollutant. 
EPA is also to revise the NAAQS, if appropriate, based on the revised 
    Particulate matter (PM) is one of six ``criteria'' pollutants for 
which EPA has established air quality criteria and NAAQS. EPA initially 
announced details of its plans for the review of the criteria and NAAQS 
for PM in an October 23, 1997 Federal Register notice (62 FR 55201). As 
part of its current review cycle of the PM criteria and NAAQS, EPA has 
revised the existing Criteria Document for PM. The revised Criteria 
Document will be publicly available on or about October 29, 2004, as 
described above.

    Dated: October 25, 2004.
George Alapas,
Director, National Center for Environmental Assessment.
[FR Doc. 04-24232 Filed 10-28-04; 8:45 am]