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Technology Transfer Network - OAR Policy and Guidance

OAR Policy and Guidance Metarecord

Document Title/Subject:
Proposed Implementation Guidance for the Revised Ozone and Particulate Matter (PM) National Ambient Air Quality Standards (NAAQS) and the Regional Haze Program
Related Documents:
Signed by:

Signature Date:

John Silvasi



Regulatory Authority:
Title 1

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

Federal Register:
August draft version of same document
Subject Category:
Nitrogen oxides
Particulate matter
Volatile organic compounds
State Implementation Plans National Ambient Air Quality Standards
Air pollutants
Air quality
Clean Air Act
On July 16, 1997, the President issued a memorandum to EPA on the implementation of the revised air quality standards for ozone and PM. The purpose of the attached document is to provide guidance on implementing the revised ozone and PM NAAQS and the regional haze program consistent with the Clean Air Act and the President's memorandum.

This draft replaces the draft of August 14, 1998. It includes guidance to replace the "placeholders" of the August draft. As a result of providing guidance for the placeholder sections, it also includes a number of changes to certain other parts of the draft guidance.

For the revised ozone NAAQS, the guidance covers a classification scheme, including relevant action dates for the planning process; a policy clarifying the requirement that States adopt reasonably available control requirements and reasonably available control technology (RACM/RACT) into ozone nonattainment area SIPs for the ozone standard; and
details on the SIP requirements for ozone nonattainment areas (transitional, traditional and international transport).

For the revised PM10 NAAQS, the guidance covers a classification scheme for the revised PM10 NAAQS including relevant dates for the planning process; SIP requirements for serious and moderate areas under the revised PM10 NAAQS; and a clarification of the requirement that States adopt RACM/RACT into PM nonattainment area SIPs.

For the PM2.5 NAAQS, because of the longer timeframe for collecting monitoring data, designating nonattainment areas and developing SIPs, the guidance notes where technical and other guidance is still under development. In certain cases, however, principles relating to implementing the PM2.5 NAAQS are provided.

For the PM2.5 NAAQS and the regional haze program, the guidance provides placeholders for the additional guidance that EPA plans to issue after final rulemaking on the regional haze rule; that guidance will address inter-program coordination and an update on regional modeling.

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