Q499. Under Subpart W of Part 98, the definition of Natural Gas Processing provides an unclear explanation of fractionation, additionally, fractionation is not defined within the rule.

A499. EPA has reviewed your question and is unable to respond at this time.  Your question relates to an issue or issues currently the subject of ongoing litigation.  Please monitor the website for any additional guidance that may be available in the future. http://www.epa.gov/ghgreporting/reporters/subpart/w.html