OAR Policy and Guidance Metarecord

Document Title/Subject: Particulate Matter: Chapters 1-5, Appendices A and B Related Documents:	Signed by: Unsigned Signature Date: Contact: Mary Ross	Filename(s): http://www.epa.gov/ttn/oarpg/t1/reports/pmstdrft.pdf URL(s):
Regulatory Authority: Title 1	Division/Director: Air Quality Strategies and Standards Division (OAQPS) / Lydia Wegman	Submitted By: ross.mary	OGC Contact: gerald gleason OGC Phone#: 202-564-5578	Internet Contact: Jeff Clark
Document Type: Staff Papers	EPA Document Number: Federal Register:	Supersedes:
Subject Category: AIR	Keywords: Particulate matter standards	Terms: Air quality
Abstract: As required under the Clean Air Act, the periodic review of the national ambient air quality standards (NAAQS) for particulate matter (PM) is now underway. The second external review draft "Air Quality Criteria for Particulate Matter" was released for public and peer review on April 12, 2001. The Criteria Document assesses new scientific information regarding the health and environmental effects of airborne PM. The Office of Air Quality Planning and Standards (OAQPS) Staff Paper is intended to bridge the gap between the scientific review contained in the Criteria Document and the judgements required of the Administrator in reviewing a NAAQS. EPA is now releasing a preliminary draft PM Staff Paper for public and peer review. The preliminary draft PM Staff Paper and draft Criteria Document will be reviewed at a public meeting of the Clean Air Scientific Advisory Committee in July 2001. The draft Staff Paper includes preliminary assessments of scientific and technical information and proposed uture analyses or assessments for air quality characterization, integration and evaluation of health information, health risk assessment, and visibility data or information, but it does not yet include staff conclusions or recommendations on whether to revise or retain the PM NAAQS. EPA will carefully review and consider comments received during both the public comment period and the July CASAC meeting to produce a revised Criteria Document which will be followed by a revised draft Staff Paper. This document contains EPA's preliminary draft PM Staff Paper.

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