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EPA Issues Proposed NSR Rule for Condensable PM

On March 12, 2012, EPA proposed a New Source Review (NSR) rule to clarify that condensable Particulate Matter (PM) must continue to be included in measurements of PM10 and PM2.5 (for NSR purposes).  The measurement of total PM (which is typically used for New Source Performance Standard compliance) is not to include the measurement of condensable PM.  EPA is stating that the 2008 PM2.5 implementation rule included an error that appeared to redefine “particulate matter emissions” (total PM) to include condensables.

Fact Sheet:

Proposed Rule:

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