California Ambient Gradesheet

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Abstract: Ambient monitoring measures the concentrations of pollutants in the air.  US Air Quality Gradebook ("AirGrades") ambient gradesheets compare these concentrations for all measured counties

in the United States.  This gradesheet shows California ambient air quality grades for Alameda-Sutter counties.  Grading A-F is on the bell curve, comparing all US counties having EPA ambient air pollution data.