Clarksville

Site Operator: Missouri Department of Natural Resources' Environmental Services Program

Pollutants Monitored: Sulfur Dioxide (SO2)

Sulfur Dioxide (SO2)

Updated: Monthly.

National Ambient Air Monitoring Standard: A three-hour average of 0.50 ppm (parts per million) and/or a 24-hour average of 0.14 ppm (parts per million) and/or an annual average of 0.03 ppm (parts per million). Data reported in three decimal places must be rounded to two decimal places.

Exceedances allowed without a violation being recorded: One per year.

The units for all averages in this chart are parts per million.
YEAR	NUMBER OF EXCEEDANCES	ANNUAL AVERAGE	MAXIMUM 24-HOUR AVERAGE	MAXIMUM 3-HOUR AVERAGE	MAXIMUM 1-HOUR AVERAGE
2005	0	.0031	.016	.048	.074
2006	0	.0031	.015	.057	.113
2007	0	.0028	.013	.052	.135
2008
FIRST QUARTER	not available	not available	not available	not available	not available
SECOND QUARTER	not available
THIRD QUARTER	not available

Graph of Recent Sulfur Dioxide (SO2) Data
Graph of SO2 PPM.