Research Priorities for Airborne Particulate Matter: IV. Continuing Research Progress

TABLE 1-3 EPA Intramural and Extramural PM-Research Enacted Budgets for FY 1998-2001 ($ million/year in actual dollars)^a

NRC Committee-Recommended Research Topic	Recipient^b	FY 1998	FY 1999	FY 2000	FY 2001	FY 2002	FY 2003
Outdoor vs. human exposure
	Total	$6.3	$8.2	$8.1	$5.3	$1.6	$1.3
	Intramural	$4.1	$8.2	$7.6	$4.8	$1.3	$0.5
	Extramural	$2.2	$0.0	$0.5	$0.5	$0.3	$0.8
Exposure to toxic PM components
	Total	$0.5	$0.0	$0.6	$0.6	$1.7	$3.9
	Intramural	$0.0	$0.0	$0.0	$0.0	$1.4	$3.2
	Extramural	$0.5	$0.0	$0.6	$0.6	$0.3	$0.7
Emission sources
	Total	$5.5	$7.0	$4.7	$4.5	$5.2	$6.1
	Intramural	$3.6	$5.6	$4.2	$4.0	$4.3	$5.1
	Extramural	$1.9	$1.4	$0.5	$0.5	$0.9	$1.0
Air-quality models
	Total	$0.5	$0.4	$6.6	$7.2	$7.4	$9.2
	Intramural	$0.0	$0.4	$6.0	$6.7	$5.5	$7.0
	Extramural	$0.5	$0.0	$0.6	$0.6	$1.9	$2.2
Assessment of hazardous PMcomponents
	Total	$7.9	$7.9	$8.1	$6.7	$16.1	$11.1
	Intramural	$4.1	$3.3	$4.8	$4.5	$12.1	$8.0
	Extramural	$3.8	$4.6	$3.2	$2.2	$4.1	$3.0
Dosimetry
	Total	$1.5	$0.6	$1.3	$1.1	$0.5	$0.4
	Intramural	$1.0	$0.6	$0.8	$0.6	$0.4	$0.0
	Extramural	$0.4	$0.0	$0.5	$0.5	$0.2	$0.4
Effects of PM and copollutants
	Total	$2.3	$7.4	$6.4	$11.7	$7.2	$6.5
	Intramural	$0.0	$2.6	$2.3	$4.7	$3.4	$4.1
	Extramural	$2.3	$4.9	$4.1	$7.0	$3.8	$2.5