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Ozone Data Summary (1995-1998)
 

Santa Clarita-County Fire Stati

South Coast AQMD
 
South Coast Air Basin Los Angeles 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 96 38 16 34 0.181 0.170 0.163 0.158 0.173 0.147 0.136 0.129
1997 99 54 13 25 0.156 0.147 0.140 0.140 0.174 0.129 0.124 0.119
1996 100 68 19 42 0.171 0.154 0.154 0.148 0.192 0.129 0.127 0.125
1995 100 71 26 48 0.206 0.165 0.165 0.160 0.209 0.150 0.130 0.129
* 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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