EPA Proposes San Joaquin Valley Failed to Meet 1997 PM2.5 Air Quality Standards

Summary

The Environmental Protection Agency (EPA) is proposing that the San Joaquin Valley in California failed to meet the 1997 annual and 24-hour fine particulate matter (PM 2.5) national ambient air quality standards by the December 31, 2015 deadline, based on monitored air quality data from 2013 through 2015.