PM2.5 Summary Data - 2010

Virginia 2010- PM2.5 Particulate Matter Summary by Region
Method Code 118 - Gravimetric, R & P Model 2025 Sequential Micrograms Per Cubic Meter (ug/m3)

LOCATION 24-HOUR SAMPLING QUARTERLY
ARITHMETIC MEAN

ANNUAL
ARITH.
MEAN
NO.
OBS.
MAX
2ND
MAX
98th PERCENTILE VALUE I II III IV
SOUTHWEST REGION
BRISTOL
Highlands View Elementary School
118 21.7 21.1 21.1 10.4 10.3 13.0 9.7 10.8
VALLEY REGION
ROCKINGHAM CO.
Rockingham VDOT
117 37.3 32.9 25.2 11.8 10.0 12.8 10.2 11.2
REST
Woodbine Road
118 34.8 32.9 24.8 9.6 10.6 12.9 10.0 10.8
LURAY
Luray Caverns Airport
122 31.6 28.5 24.3 10.9 9.3 12.2 8.6 10.2
CHARLOTTESVILLE
Albemarle High School
120 36.5 24.0 19.8 7.5 9.8 12.3 8.0 9.4
WEST CENTRAL REGION
SALEM
Salem High School
119 24.4 22.5 21.5 8.7 10.8 13.2 8.8 10.4
ROANOKE
2020 Oakland Blvd.
351 32.7 26.1 22.7 8.6 10.6 12.8 8.8 10.2
LYNCHBURG
Water Tank on Leesville Road
117 28.0 23.1 20.4 7.9 10.6 12.4 8.0 9.7
PIEDMONT REGION
CHESTERFIELD CO.
Bensley Armory
121 32.2 24.3 21.6 9.2 10.4 12.3 9.0 10.2
HENRICO CO.
Math & Science Center
350 33.2 24.6 22.4 8.8 10.5 12.0 8.4 9.9

Virginia 2010- PM2.5 Particulate Matter Summary by Region

LOCATION 24-HOUR SAMPLING QUARTERLY
ARITHMETIC MEAN

ANNUAL
ARITH.
MEAN
NO.
OBS.
MAX
2ND
MAX
98th PERCENTILE VALUE I II III IV
PIEDMONT REGION (cont.)
HENRICO CO.
Piedmont Regional Office
121 34.7 24.0 21.1 8.3 10.2 12.3 7.9 9.7
CHARLES CITY CO.
Route #608
123 32.2 24.1 20.6 8.1 10.6 11.5 7.4 9.4
TIDEWATER REGION
NORFOLK
NOAA Facility
122 33.9 24.8 21.7 10.0 10.8 11.7 8.4 10.2
VA. BEACH
Tidewater Regional Office
352 38.3 31.9 23.9 9.4 10.3 10.6 9.1 9.9
NEWPORT NEWS**
Public School Maintenance Facility
47 20.6 17.2 20.6* 8.9 9.3 N/A N/A N/A
HAMPTON***
NASA Langley Research Center
63 33.2  24.7 24.7* N/A 15.2* 11.6 7.5 11.4*

* Did not meet EPA's minimum data capture requirements.  ** Discontinued June 2010.  *** Installed June 2010.

Virginia 2010- PM2.5 Particulate Matter Summary by Region

LOCATION 24-HOUR SAMPLING QUARTERLY
ARITHMETIC MEAN

ANNUAL
ARITH.
MEAN
NO.
OBS.
MAX
2ND
MAX
98th PERCENTILE VALUE I II III IV
NORTHERN REGION
LOUDOUN CO.
Broad Run High School
117 36.9 23.4 19.6 9.0 10.6 12.5 9.1 10.3 
FAIRFAX CO.
Lee District Park
358 35.5 33.7 23.7 9.0 10.1 12.5 8.2 9.9
ARLINGTON CO.
Aurora Hills Visitors Center
108 34.1 23.0 21.8** 9.7 10.6 12.7 8.3** 10.3**
FAIRFAX CO.*
McLean Governmental Center
56 20.0 19.8 19.8** 10.2 10.9 N/A N/A N/A*
FAIRFAX CO.*
Annandale
55 20.4 18.9 18.9** 9.2 10.3 N/A N/A N/A*
CITY OF ALEXANDRIA
Alexandria Health Dept.
116 36.2 28.6 24.0 10.7 10.8 13.2 10.5 11.3

* Site shut down June 30, 2010.  ** Did not meet EPA's minimum data capture requirements.

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Virginia Department of
Environmental Quality
629 East Main Street
P.O. Box 1105
Richmond, VA 23218
(804)698-4000

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