Eldorado Springs

El Dorado Springs

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

Pollutants Monitored: Ozone (O3), Nitrogen Dioxide (NO2), Inhalable Particulate (PM2.5)

Ozone (O3)

Updated: Monthly April through October.

National Ambient Air Monitoring Standard:

8-hour Standard
The three-year average of the fourth highest daily maximum 8-hour average must not be greater than .08 ppm (parts per million). Data reported in three decimal places must be rounded to two decimal places.

1-hour Standard 1970 to 1997-no longer applies to any area in Missouri.
A one-hour average of 0.12 ppm (parts per million).

Exceedances allowed without a violation being recorded:
The term exceedance does not apply to the 8-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. 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 DAYS OVER STANDARD	MAXIMUM 1-HOUR AVERAGE	MAXIMUM 8-HOUR AVERAGE	Fourth MAXIMUM 8-HOUR AVERAGE
1998	0	.096	not available	not available
1999	0	.105	not available	not available
2000	0	.107	not available	not available
2001	0	.084	not available	not available
2002	2	.101	.089	.082
2003	0	.087	.082	.080
2004	1	.095	.086	.071
2005	0	.091	.084	.079
2006	0	.089	.078	.075
2007	0	.085	.079	.074
2008
FIRST QUARTER	not available	not available	not available	not available
SECOND QUARTER	not available
THIRD QUARTER	not available

Graph of Recent Ozone (O3) Data
Graph of O3 PPM.

Nitrogen Dioxide (NO2)

Updated: Monthly.

E.P.A. Ambient Air Monitoring Standard: An annual average of 0.053 ppm (parts per million).

Exceedances allowed without a violation being recorded: None.

The units for all averages in this chart are parts per million.
YEAR	NUMBER OF EXCEEDANCES	ANNUAL AVERAGE	MAXIMUM 1-HOUR AVERAGE
1998	0	.003	.011
1999	0	.003	.017
2000	0	.003	.019
2001	0	.003	.023
2002	0	.0027	.012
2003	0	.0026	.017
2004 (Instrument removed from the site)

Inhalable Particulate (PM2.5)

Updated: Within 90 days after the end of a quarter.

National Ambient Air Monitoring Standard: (24-hour samples; one taken every third day) A three year average of the 98th percentile 24-hour averages equal or greater than 35 ug/m³ (micrograms per cubic meter) and/or a three year average of annual averages equal or greater than 15.0 ug/m³ (micrograms per cubic meter).

Exceedances allowed without a violation being recorded: two percent of daily observations

The units for all averages in this chart are micrograms per cubic meter.
YEAR	FIRST MAXIMUM 24-HOUR AVERAGE	SECOND MAXIMUM 24-HOUR AVERAGE	ANNUAL AVERAGE
1999	31.2	29.9	11.29
2000	37.3	35.7	11.47
2001	26.5	25.1	11.6
2002	31.7	30.5	11.8
2003	38.3	30.4	11.4
2004	31.7	26.3	9.92
2005	33.9	33.2	12.08
2006	23.4	21.4	11.87
2007(TEOM)	37.7	37.2	12.6
FRM INSTRUMENT REMOVED FROM SITE (1st qt 2007)
2008(TEOM)
THROUGH FIRST QUARTER	not available	not available	not available

Graph of Recient (PM2.5) Real Time (TEOM) Data
Graph of NO2 PPM.