South Charleston, Springfield

Environmental Services Program

South Charleston, Springfield

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

Pollutants Monitored: Sulfur Dioxide (SO2)

Sulfur Dioxide (SO2)

Updated: Monthly.

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


The units for all averages in this section are reported in parts per billion.
Year	Number of Exceedances	Annual Average	Maximum 1-Hour Average	Maximum 24-Hour Average	99th Percentile 1-Hour Average
2012
First Quarter	0	2.58	48.9	16.0	35.4
Second Quarter	0
Third Quarter	0
2011	0	2.45	105.3	15.5	59.3
This site was take over by Environmental Services Program on September 1, 2011.
2010	0	3.22	85.0	24.4	62.0
The units for all averages below this line are reported as parts per million.
Year	Number of Exceedances	Annual Average	Maximum 24-Hour Average	Maximum 3-Hour Average	Maximum 1-Hour Average
1993	0	0.009	0.064	0.197	0.321
1994	0	0.010	0.106	0.361	0.564
1995	0	0.004	0.038	0.209	0.282
1996	1	0.006	0.149	0.358	0.446
1997	0	0.003	0.037	0.123	0.145
1998	0	0.004	0.037	0.114	0.154
1999	0	0.004	0.026	0.090	0.123
2000	0	0.005	0.031	0.117	0.136
2001	0	0.004	0.040	0.089	0.122
2002	0	0.0037	0.036	0.087	0.114
2003	0	0.0033	0.026	0.065	0.068
2004	0	0.0033	0.030	0.043	0.067
2005	0	0.0029	0.022	0.050	0.077
2006	0	0.0031	0.021	0.064	0.088
2007	0	0.0032	0.025	0.087	0.107
2008	0	0.0043	0.043	0.098	0.114
2009	0	0.0029	0.025	0.071	0.098