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State of California California Air Resources Board
Daily Ozone Summary Report
Ozone Air Quality for the Day of
Monday, July 9, 2001
Based on preliminary data, subject to change.
 
Region Day Exceeding the Standard Maximum Concentration (ppm)
State 1-hr Nat'l 1-hr Nat'l 8-hr 1-hr 8-hr
Broader Sacramento Area* 0.08 0.07
San Diego Air Basin 0.06 0.05
San Francisco Bay Area Air Basin 0.04 0.04
San Joaquin Valley Air Basin 0.09 0.08
South Coast Air Basin 0.09 0.08
Note: Check mark means there was an exceedance and blank means there was no exceedance.
N/A: Data not Available
2001 Year-to-Date Ozone Air Quality
Data through Monday, July 9, 2001
Based on preliminary data, subject to change.
 
Region Days Exceeding the Standard Maximum Concentration (ppm)
State 1-hr Nat'l 1-hr Nat'l 8-hr 1-hr 8-hr
Broader Sacramento Area* 27 3 26 0.14 0.11
San Diego Air Basin 15 1 8 0.14 0.12
San Francisco Bay Area Air Basin 12 1 6 0.13 0.10
San Joaquin Valley Air Basin 46 12 42 0.13 0.12
South Coast Air Basin 58 17 52 0.18 0.14
*  Broader Sacramento Area includes Sacramento Metropolitan Air Quality Management District, Yolo-Solano Air Pollution Control District, the southern third of Sutter County Air Pollution Control District, and the western portions of El Dorado and Placer County Air Pollution Control Districts.
_______________________________________
Standards:
     State 1-hour:  0.09 ppm
     National 1-hour:  0.12 ppm
     National 8-hour:  0.08 ppm
 
  This page last updated on 11/08/01 11:26 AM
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