... Ozone and 2011 Reconsideration On March 12, 2008, EPA revised both the primary and the secondary NAAQS for ozone to 0.075 ppm. However, on September 16, 2009, EPA announced that it was reconsidering ... reconsidering the 2008 ozone standard, and on January 6, 2010, EPA proposed a new ozone standard of between 0.060 ppm and 0.070 ppm on an 8-hour average. EPA noted that the ozone standards set in 2008 ... inspection reports; conducted a total of 1,555 on- site inspections, including complaint investigations and Stage II inspections; observed 55 stack tests; and issued a combination of 347 formal and...