Environmental Services Program

Hillcrest High School, Springfield

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

County: Greene          Site ID: 29-077-0036

Pollutants Monitored: Ozone (O3)


Ozone (O3)

Updated: Quarterly

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 0.075 ppm (parts per million). To attain this standard, the three-year average of the fourth-highest daily maximum eight-hour average ozone concentrations measured at each monitor within an area over each year must not exceed 0.075 ppm.  (Effective May 27, 2008).

Exceedances allowed without a violation being recorded:
The term exceedance does not apply to the eight-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
1993 0 0.089 not available not available
1994 0 0.099 not available not available
1995 0 0.107 not available not available
1996 0 0.104 not available not available
1997 0 0.085 not available not available
1998 0 0.117 not available not available
1999 0 0.100 not available not available
2000 0 0.085 not available not available
2001 0 0.103 not available not available
2002 1 0.097 0.085 0.074
2003 1 0.093 0.085 0.072
2004 0 0.079 0.076 0.064
2005 0 0.100 0.083 0.077
2006 1 0.094 0.086 0.074
2007 2 0.101 0.090 0.080
2008 1 0.091 0.079 0.067
2009 0 0.083 0.072 0.062
2010 0 0.077 0.067 0.066
Year Number of Days
Over Standard
Maximum
1-Hour Average
Maximum
8-Hour Average
Fourth Maximum
8-Hour Average
This site came under control of the Missouri Department of Natural Resources' Environmental Services Program on September 1, 2011.
2011 2 0.091 0.083 0.073
2012 3 0.093 0.085 0.075
2013
Second Quarter 0 0.068 0.064

0.060

Third Quarter  



Inactive Pollutant


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
0.0095Maximum
1-Hour Average
1993 0 0.011 0.076
1994 0 0.013 0.077
1995 0 0.012 0.074
1996 0 0.011 0.071
1997 0 0.011 0.059
1998 0 0.012 0.062
1999 0 0.013 0.074
2000 0 0.012 0.062
2001 0 0.013 0.065
2002 0 0.0107 0.058
2003 0 0.0111 0.128
2004 0 0.0120 0.058
2005 0 0.0115 0.061
2006 0 0.0104 0.072
2007 0 0.0100 0.058
2008 0 0.0089 0.052
2009 0 0.0083 0.070
2010
Through
Third Quarter
0 0.0079 0.062
Instrument shut down in 2010

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