Document J3OBw03kz6nJ9yp3aweow8zOZ

TALEN III MONTANA quarter among the 2017, 2019, and 2021 data EPA evaluated;`{ and (iii) based on EPA's assumption that installing a baghousc would "reduc[e] baseline fPM rates by 90% subject to a floor of 2.01-03 Heat Input (MMBtu/vr). Heat input is calculated by EPA's Post-IRA 2022 Reference Case.'" Current FPM Emission Factor (1b/MMBtu). Current fPM emission factor is EPA's "baseline" for Colstrip, which represents the 99' percentile of the lowest quarter among the 2017, 2019, and 2021 data ITA evaluated." FPM Imissions (tpy), fPM emissions are calculated by multiplying the Hcat Input (MMHtu/yr) by the Current FPM Emission Factor (1b/M1111-3tu) and diving by 2000 lb/ton. New Baghouse Cost (S/vr). New baghouse cost is EPA's annualized cost estimate for Colstrip to achieve compliance with the proposed 0.010 lb/MMBtu fPM limit via a new baghouse.s9 FPM Emission Factor with New Baghouse (lb/MMBtu). tPM emission factor with new baghousc is based on EPA's assumption that installing a baghouse would "reduc[el baseline fPM rates by 90% subject to a floor of- 2.01-03 lb/MMf3tu.`70 FPM }:missions with New Raghouse (tpy). fPM emissions with new baghousc arc calculated by multiplying the Hcat Input (MMF3tu/yr) by the fPM New Baghousc Emissions factor (1b/MMBtu) and then diving by 2000 lb/ton. FPM Emissions Reduction from New Baghousc (tpv). 1PM emission reduction from new baghouse is calculated by subtracting fPM emissions with new baghousc (tpy) and fPM emissions (tpy). New baghousc cost effectiveness (S/ton). New baghousc cost effectiveness is calculated by dividing new baghousc cost (S/yr) by 1PM emissions reduction from new baghouse (tpy). See I'echnical Memo at PI)F p. 4. See id at PI)F p. 10. Post-IRA 2022 Reference Case, https "www.epa.govipower-sector-modelin " See id at PI)F p. 4 Appendix I), id at PI)F p 9(> See id at PDF p. 10. post -ira -2022-reference-case 29 Sierra Club FOIA 2025-EPA-04883 ED_018388_00000307-00030 SC_EVERSPLIT0006126