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Ozone Data Summary (1995-1998)
 

Glendora-Laurel

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 61 28 37 0.222 0.200 0.200 0.188 0.217 0.171 0.151 0.143
1997 100 67 18 24 0.170 0.168 0.164 0.162 0.229 0.130 0.128 0.124
1996 100 91 49 52 0.205 0.197 0.188 0.186 0.230 0.150 0.146 0.145
1995 100 118 73 84 0.216 0.214 0.210 0.209 0.249 0.158 0.151 0.148
* 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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