How does this NOx transport rule that addresses the 1-hour standards relate to the new 8-hour ozone standard finalized in July 1997?
OTAG was established to address transport issues associated with meeting the 1-hour ozone standards. Shortly after OTAG concluded, EPA finalized a new 8-hour ozone standard. The regional reductions of nitrogen oxides achieved through this rulemaking are also key components for meeting the new air standards in a cost effective manner. EPA’s analysis indicates that regional reductions of nitrogen oxides will bring the vast majority of new nonattainment areas — those that meet the previous 1-hour ozone standard, but may not meet EPA’s recently revised 8-hour national air quality standard for ozone — into attainment of the revised standards without any additional local controls beyond those already required. The OTAG process and this SIP call are focused on the long range transport of NOx emissions that contribute adverse health effects and poor air quality in downwind states. This transport causes problems downwind for areas trying to meet either the 1-hour or 8-hour standard.
Related Questions
- How does this NOx transport rule that addresses the 1-hour standards relate to the new 8-hour ozone standard finalized in July 1997?
- How does EPAs 1998 NOx Transport rule relate to the 126 petitions EPA received from 8 Eastern states?
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