agenda recommended in this report for addressing the highest-priority research needs. The committee recommends that Congress correct this by making an appropriate commitment to particulate-matter research that includes the levels recommended in this report, as well as other particulate-matter research and development activities required by EPA. Without this commitment, a successful research agenda can not be implemented and sustained. Major uncertainties will continue to plague the next review of the particulate-matter standards, as well as the development of control strategies, to the detriment of both public health and the nation's economy.
Multiple sources of funding need to be continued. However, a sustained high level of funding through a single federal agency such as EPA is needed if critical research is to resolve major uncertainties. The members of this committee were encouraged by the leadership recently shown by the U.S. Congress when it provided supplemental funding to EPA for an enhanced particulate-matter research program in Fiscal 1998, and we recommend support at the same level for the next several years.