Environmental Services Program

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.

Sulfur Dioxide (SO2)

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 0 .0032 .014 .058 .160
Second Quarter 0
Third Quarter Not Available
Instrument Removed Second Quarter 2008

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