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Ozone Data Summary (1995-1998)
 

Cool-Highway 193

El Dorado County APCD
 
Mountain Counties Air Basin El Dorado County
Year % of Days Moni-
tored
Number of Days Standard Exceeded 1-hr Ozone
Concentrations
ppm
8-hr Ozone Concentrations
ppm
State 1-hour Federal 1-hour Federal 8-hour 1st
High
2nd
High
3rd
High
4th
High
EPDC* 1st
High
2nd
High
3rd
High
1998 41 30 5 25 0.163 0.144 0.143 0.134 0.147 0.125 0.120 0.119
1997 50 12 1 10 0.145 0.120 0.110 0.109   0.106 0.093 0.092
1996 41 35 2 30 0.136 0.130 0.123 0.122   0.113 0.112 0.105
* The Expected Peak Day Concentration (EPDC) is calculated based on data for 3 successive years, listed by the last year of the three year period.  The EPDC represents the ozone concentration expected to occur once per year.
   

Please send your questions or comments to:
aqdweb@arb.ca.gov

This page last revised on March 26, 1999.

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