Document 2R3G88556jmp78V3QkdJYY2Jb

III TALEN MONTANA Table 3: Annual Costs of Control Options at Colstrip to Meet the Proposed 0.010 lb/MNIBtu fPMI Limit (B&MI Class 5 Feasibility' Estimates) Total (EPA)57 Baeouse (EPA)59 Upstream ESP (B&M) 0.1 *W Upstream FE (B&M) Wet ESP (B&M) Reheat ESP (B&M) Reheat FF (B& M) Installed Capital Cost $486.OM $404.9M $744.5M $263.5M $351.2M Annualized Cost of Controls $77.3-$93.2M S38,051,172 S87.4M S78.OM 5104.9M 541.8M S56.5M Table 4: Annual Costs of Control Options at Colstrip to Meet the Proposed 0.010 lb/MNIBtu fPMI Limit (B&M Estimates Using EPA Cost Approach) Installed Total (EPA)6 %house (EPA)" f Capital Cost L Upstream ESP (R&M) $406.1M Upstream FF (B&M) $338.3M Wet ESP (B&M) $622.2M Reheat ESP (B&M) $220.2M Reheat FF (B&M) $293.4M Annualized --I Cost of Controls $77.3-593.2M $38,051,172 S77.8M S70.1M 590.4M 536.6M 549.7M Table 7. Technical Memo at PDF p. 12 (for all ECUs subject to the Proposed Rule). Cost estimates are based on the following assumptions, scope, and other cost factors. Assumptions include: 85% capacity factor, $15 'ton disposal. $200/ton lime, $45 'MW power, 15-year life, and 8.25% prime rate. Scope includes: ductwork, foundations, control device, electrical (percent based), no fans, no stack modifications, and ash and lime silos and slurring/feed for upstream control options. Other cost factors include: 5% indirect costs, 8% engineering cost. 5% escalation during construction, 15% contingency costs. and 0% (tuners' cost. Appendix D, id. at PDT' p. 80 (total annualized costs for Colstrip is calculated by summing the annualized costs for Units 3 and 4). (11' Table 7, Technical Memo at PI)F p. 12 (for all EGUs subject to the Proposed Rule). Cost estimates arc based on the following assumptions, scope, and other cost factors. Assumptions include: 85% capacity factor, $15/ton disposal, $2001ton Ilene, 545: MGM' power, 15-year life, and 8.25% prime rate. Scope includes: ductwork, foundations, control device, electrical (percent based), no fans, no stack modifications, and ash and lime silos and slurring fccd for upstream control options. Other cost factors include: 0% indirect costs, 8% engineering cost, 0% escalation during construction, 10% contingency costs, and 0% owners' cost ' 2 Appendix I), id. at PI)1 p. 80 (total annualized costs for Colstrip is calculated by summing the annualized costs for Units 3 and 4). 19 Sierra Club FOIA 2025-EPA-04883 ED_018388_00000307-00020 SC_EVERSPLIT0006116