South Broadway and Hurck, St. Louis
Site Operator: Missouri Department of Natural Resources' Environmental Services Program.
Pollutants Monitored: Inhalable Particulate (PM2.5)
Updated: Within 90 days after the end of a quarter.
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.
|1999||not available||not available||not available|
|This site came under the control of Missouri Department of Natural Resources on September 1, 2011.|
|Data from 2012 on is collected from a continiously operated TEOM DF.|
Updated:Only historic data is shown. Instrument was shut down in 2010
National Ambient Air Quality 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. Monthly data and data shown graphically is raw, unreviewed and unvalidated data.
|Instrument shut down in 2010|