Environmental Services Program

Mercer County

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

Pollutants Monitored: Hydrogen Sulfide (H2S), Ammonia(NH3)


Hydrogen Sulfide (H2S)

Updated: Data is historical.  Instrument was discontinued.

National Ambient Air Monitoring Standard: None

Missouri State Yearly Standard : 0.05 ppm 30min average

Exceedances allowed without a violation being recorded: Two in one year

Missouri State Weekly Standard : 0.03 ppm 30min average

Exceedances allowed without a violation being recorded: Two in five days.

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.

Hydrogen Sulfide (H2S)

The units for all averages in this chart are parts per million.
Year Number of
Violations
Annual
Average
Maximum
30 Min. Average
Maximum
1-Hour Average
1999 not available not available not available not available
2000 0 .0085 .039 .029
2001 1 .0044 .037 .035
2002 1 .0017 .085 .064
2003 1 .002 .053 .030
2004 0 .007 .043 .029
2005 2 .0012 .076 .049
2006 0 .0021 .139 .026
2007 1 .0025 .108 .055
2008 4 .0023 .095 .054
2009 (Site Shutdown in July 2009)
First Quarter 0 .0020 .052 .041
Second Quarter 0
Third Quarter Not Available


Ammonia (NH3)

Updated: Data is historical.  Instrument was discontinued.

National Ambient Air Monitoring Standard: 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.

Ammonia (NH3)

The units for all averages in this chart are parts per million.
Year Number of
Exceedances
Annual
Average
Maximum
1-Hour Average
2000 0 .0559 1.653
2001 0 .052 1.176
2002 0 .0355 .793
2003 0 .0404 1.637
2004 0 .0475 1.112
2005 0 .0503 2.170
2006 0 .0370 .901
2007 0 .0372 1.479
2008 0 .0304 .936
2009 (Site Shutdown in July 2009)
Through
Second Quarter
0 .0213 .488

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