California Air Resources Board California Map with Basin Highlighted
Basin by Basin Comparison of 1996 PM10 Air Quality Data
Basin Name % 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
Great Basin Valleys 27 8 N Y 491    29.8  68.9  455.1  491       
Lake County 0 0 N N 26    9.1  10.2  25.5  26       
Lake Tahoe 6 0 N N 72    19.3  23.4  98.3  72       
Mountain Counties 6 0 N N 114    23.3  29.6  92.1  114       
Mojave Desert 16 0 N N 138    25.6  29.0  77.6  138       
North Coast 5 0 N N 87    21.6  24.5  83.0  87       
North Central Coast 15 0 N N 115    27.7  32.8  116.4  115       
Northeast Plateau 4 1 N N 188    20.6  17.0  58.0  188       
South Coast 65 1 Y Y 162    52.0  62.8  212.8  162       
South Central Coast 25 0 Y N 97.6  31.6  39.4  81.3  97.6   
San Diego 18 0 Y N 93    38.9  41.1  148.6  93       
San Francisco B. A. 3 0 N N 76.1  22.1  24.9  95.0  76.1   
San Joaquin Valley 46 0 Y Y 153    47.6  53.6  196.9  153       
Salton Sea 77 16 Y Y 441    90.3  109.8  223.0  441       
Sacramento Valley 18 0 N N 98    25.5  29.2  121.4  98       

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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