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New air quality standards for fine particulate matter (FPM) require new modeling approaches. This paper outlines implementation timing, technical needs, and research gaps for meeting these National Ambient Air Quality Standards (NAAQS).

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Area of Science:

  • Environmental Science
  • Atmospheric Chemistry
  • Policy Analysis

Background:

  • The U.S. Environmental Protection Agency (EPA) established new National Ambient Air Quality Standards (NAAQS) for fine particulate matter (FPM) in July 1997.
  • Implementation of these standards necessitates the development and application of advanced modeling and analysis techniques.
  • Feedback from Federal Advisory Committee Act (FACA) work groups highlights specific needs for modeling and source attribution.

Purpose of the Study:

  • To summarize the anticipated timeline for implementing programs designed to meet the new FPM NAAQS.
  • To identify technical requirements and analytical needs driven by the FPM NAAQS.
  • To outline key issues for future guidance on modeling and analyses for attainment demonstrations.

Main Methods:

  • Review of likely implementation timing for FPM NAAQS programs.
  • Analysis of technical requirements derived from the nature of the FPM NAAQS.
  • Incorporation of feedback from EPA-sponsored workshops and FACA subcommittee work groups on modeling and source attribution.

Main Results:

  • Identified key technical requirements for modeling to meet the FPM NAAQS.
  • Summarized agency feedback on modeling and analysis needs through FACA processes.
  • Described conclusions and recommendations from EPA workshops on modeling and source attribution.

Conclusions:

  • Several unmet modeling and analysis needs exist to support effective FPM air quality strategies.
  • Future guidance must address major topics and issues for attainment demonstrations.
  • Policy-relevant research is needed in identified areas to support air quality goals for FPM.