Environmental Services Program
Herculaneum Thurwell Street Site
Site Operator: Missouri Department of Natural Resources Environmental Services Program
Pollutants Monitored: Lead (Pb)
Updated: Only historic data is shown. Instrument was shut down in 2005.
National Ambient Air Monitoring Standard: (24-hour samples; one taken every sixth day) A three-month average of 1.5 ug/m3 (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.
|2004 (instrument installed third quarter)|
|2005 (Instrument was shut down)|
|Third Quarter||Instrument removed||not available|