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Technology Transfer Network - OAR Policy and Guidance

OAR Policy and Guidance Metarecord

Document Title/Subject:
Guidance for Implementing the 1-Hour Ozone and Pre-Existing PM10 NAAQS
Related Documents:
Revised National Ambient Air Quality Standards for ground level ozone and particulate matter issued by EPA on July 17, 1997
Signed by: Richard D. Wilson, Acting Assistant Administrator for Air & Radiation

Signature Date: December 29, 1997

Sharon Reinders(Ozone)
Robin Dunkins (PM)
Air Quality Strategies and Standards Division

Filename(s): http://www.epa.gov/ttn/oarpg/t1/memoranda/iig.pdf



Regulatory Authority:
Title 1

Air Quality Strategies and Standards Division (OAQPS)
Submitted By:
Document Type:
Policy & Guidance Memos
EPA Document Number:

Federal Register:
Subject Category:

Particulate matter
Volatile organic compounds
Reclassification Rate of Progress Requirements Attainment Demonstrations Attainment Determinations NOx Reductions NOx Waivers Part D State Implementation Plans Attainment Areas Unclassifiable Areas

Air quality
Clean Air Act
This guidance, issued by EPA's Office of Air & Radiation, was released for States to use in
implementing the Clean Air Act requirements for ground-level ozone and particulate matter during the transition time between implementation of the old and new air quality standards. This guidance is intended to ensure that States maintain the momentum of existing control programs for ozone and particulate matter during the time when they are preparing their plans to implement the new standards. This guidance applies to all areas now subject to EPA's 1-hour standard and the pre-existing particulate matter standards and provides additional flexibility to States to achieve these standards. PLEASE NOTE: EPA will implement the concepts discussed in this guidance through subsequent guidance and rulemaking actions, as appropriate. Such rulemaking actions include approving or disapproving State implementation plan submittals. In a related matter, EPA is releasing a list of all of the counties for which the 1-hour ozone standard has been revoked. The new 8-hour standard remains in effect for these counties. EPA will formally "designate" areas as attainment or nonattainment for the 8-hour standard in the year 2000. (19 pages)

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