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Ozone Data Summary (1995-1998)
 

Parlier

San Joaquin Valley Unified APCD
 
San Joaquin Valley Air Basin Fresno 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 74 64 13 54 0.164 0.152 0.145 0.142 0.149 0.120 0.118 0.108
1997 96 68 9 48 0.137 0.135 0.135 0.130 0.148 0.112 0.109 0.107
1996 97 82 18 59 0.151 0.151 0.145 0.144 0.154 0.112 0.111 0.111
1995 89 42 9 25 0.143 0.135 0.133 0.132 0.147 0.111 0.108 0.107
* 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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