Groups seek to block EPA extension of California PM attainment deadline

Several environmental and equity groups are asking the 9th Circuit to quickly block EPA’s approval of a one-year deadline extension for California’s San Joaquin Valley area to attain a 1997 annual fine particulate matter (PM2.5) standard, the latest battle in an ongoing legal war over various Golden State plans to meet federal emission limits. “The Court should grant this Motion because EPA’s regulations prohibit the extension and the San Joaquin Valley has repeatedly failed to attain the National Ambient Air...