Environmental Services Program

Branch Street, St. Louis City

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

County: St. Louis City   Site ID: 29-510-0093

Pollutants Monitored: Inhalable Particulate (PM10), Inhalable Particulate (PM2.5)

 


Inhalable Particulate (PM10)

Updated: Quarterly.

National Ambient Air Monitoring Standard: (24-hour samples; 1 taken every 6th 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. Monthly data and data shown graphically is raw, unreviewed and unvalidated data.

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
2006
Fourth Quarter
0 31.7 93
2007
0 39.8 121
2008 2 38.4 191
2009 0 32.6 107
2010 0 38.2 145
2011 2 42.7 288
2012 3 46.4 201
This site came under control of Missouri Department of Natural Resources on September 1, 2011.
2013
First Quarter 0 30.6 220
Second Quarter 0
Third Quarter  

Inhalable Particulate (PM2.5)

Updated: Quarterly.

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. Monthly data and data shown graphically is raw, unreviewed and unvalidated data.

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
2007(instrument installed late Second Quarter) 35.4 35.4 15.54
2008 31.7 31.7 13.40
2009 27.5 25.5 11.97
Year First Maximum
24-Hour Average
98th Percentile Value Annual
Average
2010 41.4 25.7 13.82
2011 24.6 24.6 10.84
2012 32.0 28.5 12.15
2013
Second Quarter 27.9 23.6 10.83

Branch Street air monitorig site

 

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