Environmental Services Program

Margaretta

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 Monitoring 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 Monitoring 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


Sulfur Dioxide (SO2)

Updated: Quarterly.

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.

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

Sulfur Dioxide (SO2)

The units for averages in the top of this chart are parts per million.
Year Number of
Exceedances
Annual
Average
Maximum
24-Hour Average
Maximum
3-Hour Average
Maximum
1-Hour Average
2000 0 0.005 0.022 0.042 0.080
2001 0 0.006 0.019 0.057 0.140
2002 0 0.0049 0.026 0.057 0.086
2003 0 0.0045 0.016 0.051 0.066
2004 0 0.0039 0.024 0.060 0.112
2005 0 0.0045 0.021 0.060 0.112
2006 0 0.0038 0.015 0.049 0.074
2007 0 0.0036 0.015 0.043 0.072
2008 0 0.0033 0.015 0.035 0.083
2009 0 0.0027 0.013 0.032 0.057
Year Number of
Exceedances
Annual
Average
Maximum
1-Hour Average
Maximum
24-Hour Average
99th Percentile
2010 0 0.00326 0.076 0.0146 0.049
Values below this line are reported in parts per billion (ppb).
2011 0 2.71 56.7 10.7 36.0
2012 0 1.73 67.2 10.3 36.0
2013
First Quarter 0 2.0 31.8 7.4 18.5
Second Quarter 0
Third Quarter  

 


Inactive Pollutants


 

Ozone (O3)

Updated: Only historic data is shown.  This instrument was shut down in 2009 prior to ozone season. 

National Ambient Air Monitoring Standard:

Eight-hour Standard
The three-year average of the fourth highest daily maximum eight-hour average must not be greater than .08 ppm (parts per million). Data reported in three decimal places must be rounded to two decimal places.

One-hour Standard 1970 to 1997-no longer applies to any area in Missouri.
A one-hour average of 0.12 ppm (parts per million).

Exceedances allowed without a violation being recorded:
The term exceedance does not apply to the eight-hour standard. The three-year average is used to determine designation of attainment or non-attainment.

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

Ozone (O3)

The units for all averages in this chart are parts per million.
Year Number of Days
Over Standard
Maximum
1-Hour Average
Maximum
8-Hour Average
Fourth Maximum
8-Hour Average
2000 0 .111 not available not available
2001 0 .103 not available not available
2002 17 .124 .111 .098
2003 5 .141 .116 .090
2004 0 .104 .077 .072
2005 9 .111 .096 .091
2006 0 .099 .084 .076
2007 6 .133 .113 .091
2008 4 .106 .080 .076
Instrument was shut down in 2009 prior to ozone season

 


Carbon Monoxide (CO)

Updated:Only historic data is shown. Instrument was shut down in 2010.

National Ambient Air Monitoring Standard: A one-hour average of 35 ppm (parts per million) and/or an eight-hour average of 9 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.

Carbon Monoxide (CO)

The units for all averages in this chart are parts per million.
Year Number of
Exceedances
Maximum
8-Hour Average
Maximum
1-Hour Average
2000 0 4.6 5.8
2001 0 6.6 8.1
2002 0 3.6 5.8
2003 0 3.1 4.9
2004 0 3.3 4.9
2005 0 4.2 5.1
2006 0 2.5 4.3
2007 0 2.7 4.3
2008 0 3.8 4.4
2009 0 1.8 2.5
2010
First Quarter 0 1.5 2.5
Second Quarter 0
Third Quarter 0
Instrument shut down in 2010

 


 

Inhalable Particulate (PM2.5)

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

National Ambient Air Monitoring 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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