tional program of PM research, identified 10 high-priority research topics linked to key scientific uncertainties relevant to setting policy, and presented a 13-year, integrated “research investment portfolio” including recommended short- and long-term scheduling and estimated costs of the research. In developing its research recommendations, the committee did not undertake to judge the adequacy of the scientific foundation for EPA's 1997 decision to establish the new PM standards, recognizing that such policy considerations extend beyond the realm of science, and the committee was neither charged nor constituted to undertake a review of the standards.

In its second report, Research Priorities for Airborne Particulate Matter: II. Evaluating Research Progress and Updating the Portfolio, released in 1999, the committee described its plans for monitoring the progress of the research. In addition, the research recommendations from the committee's first report were updated, and two of the recommended research topics were substantially revised.


Congress and EPA have given strong support to the recommendations presented in the committee's first two reports, as indicated in Table ES-1, which shows funding levels budgeted during fiscal years 1998-2001 for EPA's PM research and related technical work. In contrast, the fiscal year 1997 funding level for PM research and related technical work was about $21 million. EPA's Office of Research and Development (ORD) has shifted its PM research program to respond

TABLE ES-1 EPA Funding for PM Research and Related Technical Work (millions of dollars)


Enacted Budget


FY 1998

FY 1999

FY 2000

FY 2001

PM research





Related technical work





The National Academies | 500 Fifth St. N.W. | Washington, D.C. 20001
Copyright © National Academy of Sciences. All rights reserved.
Terms of Use and Privacy Statement