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Shapefile
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California. Air Resources Board
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California. Air Quality Standards Section
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California
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1. Carbon Monoxide: California State Area Designations, 2008-2011
2008. California. Air Resources Board. Planning and Technical Support Division and United States. Environmental Protection Agency. This polygon shapefile contains area designations of carbon monoxide (CO) levels in California as required under Health and Safety Code section 396... California. Air Resources Board.
2. Hydrogen Sulfide: California State Area Designations, 2008-2011
2008. Stephen P. Teale Data Center (Calif.). and California. Air Resources Board. Planning and Technical Support Division. This polygon shapefile contains area designations of hydrogen sulfide levels in California as required under Health and Safety Code section 39608. ... California. Air Resources Board.
3. Visibility Reducing Particles: California State Area Designations, 2008-2011
2011. Stephen P. Teale Data Center (Calif.). and California. Air Resources Board. Planning and Technical Support Division. This polygon shapefile shows area designations in California as required under Health and Safety Code section 39608 for ozone, nitrogen dioxide, su... California. Air Resources Board.