Document 0Jo7Dq14J96KKV4KoRkvogM7n

Testing Results for the MATS Residual Risk and Technology Review" at Table 2-5 (May 22, 2024) [hereinafter Mercury Testing 2024 Report], Attachment A. The broad range of variability is projected to continue into the future. See id. at Table 2-4. MATS RTR RULE REVISIONS 18. The MATS RTR eliminates the low rank coal subcategory for lignite-powered facilities and changes the limit for mercury from lignite fired power plants from 4.0 lb/TBtu to 1.2 lb/TBtu (the New Mercury Limitation). EPA assumes this limit can be met using brominated ACI to achieve greater than 90% mercury removal by lignite-burning units. 89 Fed. Reg. 38508, 38547 (May 7, 2024). 19. The MATS RTR decreases the limit for filterable particulate matter (fPM) to 0.010 lbs/MMBtu (the New fPM Limitation). 20. Compliance with the New Mercury and fPM Limitations is required on or before three years after the effective date of the Final Rule. -8- Sierra Club FOIA 2025-EPA-04883 ED_018388_00000327-00060 SC_EVERSPLIT0006369