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

Pollutants Monitored: Ozone (O3), Nitrogen Dioxide (NO2), Sulfur Dioxide (SO2), Carbon Monoxide (CO), Inhalable Particulate (PM10), Inhalable Particulate (PM2.5)


Inhalable Particulate (PM10)

Updated: Within 90 days after the end of a quarter.

National Ambient Air Quality Standard: (24-hour samples; one taken every sixth day) A 24-hour average of 150 ug/m3 (micrograms per cubic meter) and/or an annual average of 50 ug/m 3 (micrograms per cubic meter).

Exceedances allowed without a violation being recorded: None.

Disclaimer: Yearly and quarterly data shown below has been subject to data review and validation procedures by the reporting agency.

Inhalable Particulate (PM10)

The units for all averages in this chart are micrograms per cubic meter.
Year Number of
Exceedances
Annual
Average
Maximum
24-Hour Average
2000 0 30 105
2001 0 24 75
2002 0 22 64
2003 0 23 49
2004 0 20 45
2005 0 26.6 53
2006 0 19.7 55
2007 0 21.6 66
2008 0 19.2 54
2009 0 16.8 42
2010 0 19.9 90
2011 0 14.8 43
2012 0 16.9 53
2013
Through Second Quarter 0 14.5

39


Nitrogen Dioxide (NO2)

Updated: Quarterly.

National Ambient Air Quality Standard: An annual average of 0.053 ppm (parts per million).

Exceedances allowed without a violation being recorded: None.

Disclaimer: Yearly and quarterly data shown below has been subject to data review and validation procedures by the reporting agency.

Nitrogen Dioxide (NO2)

The units for all averages in this chart are parts per million.
Year Number of
Exceedances
Annual
Average
Maximum
1-Hour Average
 
2000 0 0.021 0.081  
2001 0 0.020 0.084  
2002 0 0.0206 0.087  
2003 0 0.0188 0.075  
2004 0 0.0176 0.068  
2005 0 0.0154 0.070  
2006 0 0.0151 0.074  
2007 0 0.0151 0.067  
2008 0 0.0129 0.063  
2009 0 0.0125 0.148  
Year Number of
Exceedances
Annual
Average
Maximum
1-Hour Average
98th Percentile
2010 0 0.01283 0.063 0.050
Values below this line are reported in Parts Per Billion (ppb)
2011 0 13.39 68.9 55.5
2012 0 14.13 60.5 52.4
2013
Second Quarter 0 11.38 66.3 58.5


 

 

Inhalable Particulate (PM2.5)

Updated: Only historic data is shown. Instrument was shut down in 2008

National Ambient Air Quality Standard: (24-hour samples; one taken every third day)  A three-year average of the 98th percentile 24-hour averages equal or greater than 35 ug/m3 (micrograms per cubic meter) and/or a three-year average of annual averages equal or greater than 15.0 ug/m3 (micrograms per cubic meter).

Exceedances allowed without a violation being recorded: Two percent of daily observations

Disclaimer: Yearly and quarterly data shown below has been subject to data review and validation procedures by the reporting agency.

Inhalable Particulate (PM2.5)

The units for all averages in this chart are micrograms per cubic meter.
Year First Maximum
24-Hour Average
Second Maximum
24-Hour Average
Annual
Average
1999 49.4 49.3 15.4
2000 41.8 40.2 14.94
2001 41.8 40.2 14.94
2002 73.5 58.2 14.3
2003 49.9 42.3 13.5
2004 42.1 31.5 12.11
2005 43.4 41.5 15.14
2006 31.7 30.8 12.47
2007 36.3 34.2 13.14
2008 (removed from site)

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