Pollution Locator: Smog and Particulates: County Report

POLLUTION LOCATOR|Smog and Particulates | County Report

Criteria Air Pollutant Report: FAIRFAX County, VA

Map Locating the Pollution Sources

Air Quality Rankings: Health Risks, Exposure, and Emissions

Environmental Justice Analysis for FAIRFAX County

Health Risks

Exposures to Criteria Air Pollutants

1999 Emissions Summary of Criteria Air Pollutants

Links

Map Locating the Pollution Sources

FAIRFAX County

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Air Quality Rankings: Health Risks, Exposure, and Emissions

Cleanest/Best Counties in US Percentile Dirtiest/Worst Counties in US

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

Carbon Monoxide emissions:

Nitrogen Oxides emissions:

PM-2.5 emissions:

PM-10 emissions:

Sulfur Dioxide emissions:

Volatile Organic Compound emissions:

Air Quality Index:

Ozone 1-hour average concentration:

Ozone 8-hour average concentration:

PM-2.5 24-hour average concentration:

PM-10 24-hour average concentration:

Person-days in exceedance of national air quality standard for ozone (1-hour):

Person-days in exceedance of national air quality standard for ozone (8-hour):

See how this county ranks on other criteria air pollution attributes tracked by Scorecard

Rank counties in VIRGINIA by criteria air pollutant health risks, exposures, or emissions.
Rank facilities in FAIRFAX County by criteria air pollutant emissions.
Rank monitoring stations in FAIRFAX County by criteria air pollutant exposures.

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Environmental Justice Analysis for FAIRFAX County

View Summary Environmental Justice Report (en español).

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Health Risks

Population Exposed to Unhealthy Levels of Criteria Air Pollutants:
Pollutant	Person-days in exceedance of NAAQS
Ozone
8-hour average	18,007,290
1-hour average	4,001,620

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Exposures to Criteria Air Pollutants

Nonattainment Status:

This county is in the Washington, DC-MD-VA nonattainment area for failing to meet the national ambient air quality standard for the following criteria air pollutants:

Ozone

Air Quality Index:
Percentage of days with good air quality:	68
Percentage of days with moderate air quality:	31
Percentage of days with unhealthful air quality for sensitive populations:	1
Percentage of days with unhealthful air quality:	1
Maximum AQI level in 2003	197
Median AQI level in 2003	41
90th Percentile AQI level in 2003	72

Air Quality Index
0 - 50	Good
50 - 100	Moderate
100 - 200	Unhealthful
200 - 300	Very Unhealthful
300 - 500	Hazardous

2003 Summary of Pollutant Concentrations:

Pollutant	NAAQS Standard	Highest Recorded Concentration	Second Highest Recorded Concentration	Number of NAAQS Exceedances	Stations Monitoring Pollutant
Carbon monoxide
1-hour average	35 ppm	3.6 ppm	3.3 ppm	0	4
8-hour average	9 ppm	2.8 ppm	2.7 ppm	0	4
Nitrogen dioxide
Annual arithmetic mean	0.053 ppm	.02 ppm	.01 ppm	0	3
Ozone
1-hour average	0.12 ppm	.13 ppm	.13 ppm	4	5
8-hour average	0.08 ppm	.12 ppm	.12 ppm	18	5
PM-25
24-hour average	65 ug/m3	55 ug/m3	54 ug/m3	0	3
Annual arithmetic mean	15 ug/m3	13.6 ug/m3	13.2 ug/m3	0	3
PM-10
24-hour average	150 ug/m3	64 ug/m3	61 ug/m3	0	3
Annual arithmetic mean	50 ug/m3	20 ug/m3	18 ug/m3	0	3
Sulfur dioxide
3-hour average	0.50 ppm	.03 ppm	.03 ppm	0	3
24-hour average	0.14 ppm	.02 ppm	.02 ppm	0	3
Annual arithmetic mean	0.03 ppm	.006 ppm	.005 ppm	0	3

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1999 Emissions Summary of Criteria Air Pollutants
(Expressed in tons of pollutant emitted)
	Carbon monoxide	Nitrogen oxides	PM-2.5	PM-10	Sulfur dioxide	Volatile organic compounds
Mobile Sources	211,717	31,495	3,908	11,360	2,966	19,664
Area Sources	49,912	4,378	3,244	10,012	1,194	22,483
Point Sources	762	2,929	68	108	714	578
All sources	262,391	38,803	7,220	21,481	4,874	42,725

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Links

Scorecard's report on

Virginia State Implementation Plan

Virginia Department of Environmental Quality

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