The comment period for this closed on July 14, 2014. This proposed rule will direct state and tribal air agencies to provide data characterizing current air quality in areas with large sources of sulfur dioxide (SO2) emissions if such areas do not have sufficient air quality monitoring in place to identify maximum 1-hour SO2 concentrations.
Summary Page for U.S. EPA’s Data Requirements Rule for the 1-Hour Sulfur Dioxide Primary National Ambient Air Quality Standard (NAAQS)
NTAA Comment Letter
NTAA Tribal Template Letter