Mercer County

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

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

Hydrogen Sulfide (H2S)

Updated: Monthly.

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.

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
FIRST QUARTER	not available	not available	not available	not available
SECOND QUARTER	not available
THIRD QUARTER	not available

Graph of Recent Hydrogen Sulfide (H2S) Data
Graph of H2S PPM.

Ammonia (NH3)

Updated: Monthly.

National Ambient Air Monitoring Standard: None

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
THROUGH First QUARTER	not available	not available	not available

Graph of Recent Ammonia (NH3) Data
Graph of NH3 PPM.