Air Quality Criteria for Particulate Matter

ENVIRONMENTAL PROTECTION AGENCY

[ECAO-CD-94-0671; FRL-4862-4]

Air Quality Criteria for Particulate Matter

AGENCY: Environmental Protection Agency.

ACTION: Call for information.

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SUMMARY: The Environmental Criteria and Assessment Office of Health and

Environmental Assessment, of the U.S. Environmental Protection Agency

(EPA) is undertaking to update and revise, where appropriate, EPA's air

quality criteria for particulate matter (PM) under sections 108 and 109

of the Clean Air Act.

Since completion of the 1982 criteria document for particulate

matter and sulfur oxides (and its 1986 addendum), EPA has continued to

follow the scientific literature and compile information that may be

relevant to a review of the National Ambient Air Quality Standards for

PM. Interested parties are invited to assist EPA in developing and

refining its scientific information base to help ensure that all

relevant information is considered in updating the air quality criteria

for PM. Identification of new information in the following areas will

be particularly useful: Effects of exposure on laboratory animals and

humans; effects on vegetation, agroecosystems (crops), and natural

ecosystems; effects on nonbiological materials; effects on global

climate; chemistry and physics; sources and emissions; analytical

methodology; transformation and transport in the environment; and

ambient concentrations.

To be considered for inclusion in the criteria document, submitted

information should have been published, accepted for publication, or

presented at a public scientific meeting.

DATES: All communications and information should be submitted by June

30, 1994, and addressed to the Project Manager for PM, Environmental

Criteria and Assessment office (MD-52), U.S. Environmental Protection

Agency, Research Triangle Park, NC 27711.

Dated: April 5, 1994.

Gary J. Foley,

Acting Assistant Administrator for Research and Development.

[FR Doc. 94-8736 Filed 4-11-94; 8:45 am]

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