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PM10 Air Quality Data Summaries (1988-1997)
Mariposa County
Year % of Samples
Above 24-Hr Standard
Exceeds Annual
Standard?
PM10 Concentration in ug/m3
State
>50ug/m3
Federal
>150ug/m3
State
AGM
Federal
AAM
Max
24-Hr
Max
AGM
Max
AAM
Max
EPDC
Max 99th
Percentile
1997 2 0 N N 62       19.6   21.5     62       
1996 8 0 N N 106       20.3   21.9     106       
1995 9 0 N N 71       24.2   28.0   109.9   71       
1994 24 0 N N 115       27.8   34.6   116.4   115       
1993 10 0 N N 126       26.0   30.5   201.6   126       
1992 9 0 N N 104       27.4   30.9   246.5   104       
1991 26 4 Y N 350       34.1   47.8     350       
1990 31 4 Y N 209       35.6   40.9     209       
1989 22 0 Y N 84       35.2   37.4     84       
1988 50 7 Y Y 180       48.8   58.1     180       

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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