Document Gmdy04wEQbmbyReQryNynXjjn

Sierra Club FOIA 2025-EPA-04883 \ Final Rule Strengthens MATS Particulate Matter (PM) standard used as a surrogate for non-mercury HAP metals, and compliance demonstration requirement: Tighter filterable particulate matter (fPM) standard of 0.010 Ib/MMBtu Strengthens by 67 percent compared to 2012 MATS standard of 0.030 lb/MMBtu Require all sources to use PM Continuous Emissions Monitoring Systems (PM CEMS) to demonstrate compliance 0.010 lb/MMBtu is the lowest possible fPM limit where PM CEMS can provide valid and enforceable data Mercury (Hg) standard for lignite-fired EGUs Tighter Hg emission standard of 1.2 113/TBtu Strengthens by 70 percent compared to 2012 MATS standard of 4.0 lb/Tbtu 1.2 lb/TBtu is the standard that must be met by all non-lignite-fired EGUs Remove startup definition #2 L0000-SZ00000- 8881.0- oe SC_EVERSPLIT0006303