ARB Logo
Ozone Data Summary (1992-1995)
 

Willows-N Villa Avenue

Glenn County Air Pollution Control District
 
Sacramento Valley Air Basin Glenn 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%               0.094      
1994 41% 0 0 0 0.081 0.078 0.076 0.072 0.102 0.074 0.068 0.064
1993 99% 1 0 0 0.100 0.090 0.090 0.090 0.102 0.084 0.084 0.081
1992 74% 6 0 4 0.110 0.100 0.100 0.100 0.101 0.089 0.089 0.088
* 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.

-----------

Other Sites within the Basin  |  Other Sites within the District  |  Other Sites within the County
Monitoring Site Directory  |  District/Site Directory  |  County/Site Directory
Ozone Home Page  |  Other Pollutants
ARB Home Page  |  Search ARB Programs/Topics  |  Email ARB Help Attendant