On December 19, 2012, a number of environmental groups filed a petition with U.S. EPA seeking, among other things:  1.  A "broad deployment of ozone air quality monitors in oil and natural gas development areas;" and 2. that U.S. EPA provide communities with "tools to help reduce smog-forming pollution from oil and gas development by issuing control technology guidelines (“CTGs”) for oil and gas equipment."  You can find a copy of the petition here.