Environmental Services Program

South Lindbergh, Sunset Hills

Site Operator: St. Louis County Department of Health, Air Pollution Monitoring Program.

County: St. Louis      Site ID: 29-189-0004

Pollutants Monitored: None Site is Inactive


Ozone (O3)

Updated: Only historic data is shown.  Instrument was shut down prior to 2009 monitoring 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 8-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
1998 1 0.145 not available not available
1999 0 0.124 not available not available
2000 0 0.107 not available not available
2001 0 0.110 not available not available
2002 16 0.130 0.114 0.098
2003 4 0.128 0.107 0.088
2004 0 0.089 0.76 0.070
2005 6 0.122 0.108 0.089
2006 1 0.108 0.098 0.080
2007 8 0.126 0.101 0.089
2008 0 0.092 0.073 0.067
Instrument shut down in 2009 prior to ozone season


Nitrogen Dioxide (NO2)

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

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
1998 0 0.019 0.073
1999 0 0.018 0.080
2000 0 0.016 0.154
2001 0 0.015 0.074
2002 0 0.0144 0.064
2003 0 0.0136 0.061
2004 0 0.0126 0.052
2005 0 0.0121 0.057
2006 0 0.0114 0.056
2007 0 0.0112 0.052
2008 0 0.0101 0.051
2009 0 0.0087 0.044
2010
Through Second Quarter 0 0.00915 0.050
Instrument shut down in 2010

 


Sulfur Dioxide (SO2)

Updated: Only historical data shown below. Instrument has been discontinued.

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 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
1998 0 0.006 0.032 0.093 0.116
1999 0 0.007 0.022 0.078 0.133
2000 0 0.005 0.024 0.072 0.172
2001 0 0.004 0.019 0.053 0.109
2002 0 0.0035 0.013 0.051 0.099
2003 0 0.0034 0.017 0.080 0.156
2004 0 0.0036 0.021 0.074 0.170
2005 0 0.0031 0.018 0.036 0.058
2006(instrument removed)


Inhalable Particulate (PM2.5)

Updated: Only historic data is shown.  Instrument was shut down in 2007.

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
2001 28.1 26.3 12.4
2002 40.3 35.9 13.0
2003 44.0 32.6 13.0
2004 38.9 32.6 11.59
2005 43.8 38.3 15.49
2006 27.9 23.3 10.52
2007(instrument removed)


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
2005 0 1.3 1.7
2006 0 1.3 1.6
2007 0 1.0 1.6
2008 0 1.2 1.4
2009 0 0.7 1.0
2010
First Quarter 0
0.6
0.8
Second Quarter 0
Third Quarter 0
Instrument shut down in October 2010

 

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