Findings of Failure To Attain the 1997 PM2.5

The Environmental Protection Agency (EPA) has determined that the San Joaquin Valley nonattainment area failed to attain the 1997 annual and 24-hour fine particulate matter (PM2.5) national ambient air quality standards by the December 31, 2015 ``Serious'' area attainment date. As a result of this determination, the State of California is required to submit a revision to the California State Implementation Plan that, among other elements, provides for expeditious attainment of the 1997 PM2.5 standards and for a five percent annual reduction in the emissions of direct PM2.5 or a PM2.5 plan precursor pollutant in the San Joaquin Valley.