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Ozone Data Summary (1992-1995)
 

Joshua Tree Natl Monument-Lost Horse

South Coast Air Quality Management District
 
Mojave Desert Air Basin Riverside 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
1995 0%               0.132      
1994 0%               0.132      
1993 50% 18 1 16 0.140 0.120 0.120 0.120   0.109 0.099 0.098
1992 0%                      
* 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.
** Proposed Federal Standard

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

This page last revised on April 5, 1997.

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