California Air Resources Board
PM10 Air Quality Data Summaries (1993-1997)
El Centro-9th Street
Imperial County APCD
 
Salton Sea Air Basin Imperial County
Year Number of Complete Months % of Samples
Above 24-Hr Standard
Exceeds Annual
Standard?
PM10 Concentration in ug/m3
1st
Qtr
2nd
Qtr
3rd
Qtr
4th
Qtr
State
>50ug/m3
Federal
>150ug/m3
State
AGM
Federal
AAM
Max
24-Hr
AGM AAM EPDC 99th
Percentile
1997 3 3 3 3 16 0 Y N 120    34.5 38.6 178.9  120       
1996 3 3 3 3 30 2 Y N 359    39.3 48.5 175.9  359       
1995 3 3 3 3 25 0 Y N 130    36.7 41.5 145.6  130       
1994 2 3 3 3 29 0 Y N 119    40.3 44.7   119       
1993 2 3 3 3 36 2 Y N 166    42.5 48.6   166       

Go to Data Explanation Explanation of the terminology in the header above, as well as the sampling program and analytical methods used to collect the data, the PM10 air quality standards, and how to request air quality data.

Please send questions or comments to:

aqdweb@arb.ca.gov

This page last revised on March 1, 1999

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